KR20030007138A - Apparatus for controlling clothes-cutting process used in sewing machine, and clothes-cutting apparatus of sewing machine - Google Patents

Abstract

PURPOSE: Provided are a device for controlling fabric cut and an apparatus for cutting fabric in a sewing machine, thereby forming button holes having various sizes of length without changing a cutting mess and a mess holder. CONSTITUTION: An apparatus for cutting fabric in a sewing machine characteristically controls the fabric cut by moving a fabric cutting mess having an outlet mess part which forms an outlet part of a button hole, and a fabric cutting mess which forms a linear mess part, up and downwardly.

Description

Cloth cutting control device of sewing machine and cloth cutting device of sewing machine {APPARATUS FOR CONTROLLING CLOTHES-CUTTING PROCESS USED IN SEWING MACHINE, AND CLOTHES-CUTTING APPARATUS OF SEWING MACHINE}

The present invention relates to a cloth cutting control device of a sewing machine and a cloth cutting device of a sewing machine for forming a buttonhole in the sewing object.

BACKGROUND ART In general, a button sewing sewing machine is known as a sewing machine for cutting around a buttonhole formed in a cloth (sewn material). In this button knitting machine, a scalpel and a scalpel are disposed to face up and down in the vicinity of the sewing machine needle.

As the button hole, only the eyelet hole (called eyelet button hole) formed by connecting a liquid hole (eyelet part) and a straight hole (straight line part) and a straight hole (straight line part) are formed. There is a lying eye hole.

The scalpel for eyelet hole forming has a shape in which, for example, the liquid blade forming the eyelet part and the straight blade forming the straight part are connected, and the scalpel for lying eyelet forming a straight line forming the straight part. Equipped with a day. Then, while the cloth is placed on the scalpel, the scalpel is driven down to form a buttonhole by pushing against the fabric and the scalpel.

In such a button sewing machine, a plurality of pattern data are stored for the size and shape of the button sewing machine that can be formed, and a predetermined button sewing is performed by calling one of them on the operation panel.

Fig. 35 shows a conventional table of pattern data for sewing a button, and it is possible to store nine types of pattern data having data items of 1 to 7.

Data item 1 sets the shape of the scalpel forming the eyelet portion of the eyelet hole. As shown in Fig. 36 (a), the size of the eyelet portion E is defined by the width ew and the vertical length e1, and the combination of these ew and el is previously stored as a table as shown in Fig. 36 (b). In the data item 1, one is selected from the numbers 1 to 5 when the eyelet hole is formed, and the number 0 is selected when the lying eye hole is formed.

Data items 2 to 6 are data concerning the number of needles and the length of each part constituting the eyelet trimming as shown in Fig. 36 (c). That is, as shown in the table of FIG. 36 (d), data item 2 has a yarn length m1, data item 3 has a straight needle number ln, data item 4 with an eyelet needle count, and data item 5 has a straight line. The sub space (ls) and the data item 6 are the eyelet space (es). Data item 7 selects the sun knife which cuts cloth before sewing, and the after knife which cuts cloth after sewing.

However, since the buttonhole requires a different shape for each type of clothes or design, it is necessary to basically replace the scalpel and the receiving means when forming the buttonhole of a different shape. Therefore, even in the case of simply changing the length of the straight portion of the buttonhole, it is necessary to use a corresponding scalpel and a scalpel, which is cumbersome to replace the scalpel and the scalpel.

In addition, a button sewing machine may be used for the formation of holes other than the button hole, such as a flower hole formed in the chute. In either case, in order to change the length or type of the buttonhole, the scalpel and the scalpel had to be replaced as in the above.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and provides a cloth cutting control device for sewing machines and a cloth cutting device for sewing machines that can form button holes of various lengths or types without exchanging cloth cutting blades and a receiving tray.

1 is a side view showing a structure of a sewing machine according to a first embodiment in a partially broken state;

Fig. 2 is a front view showing the structure of the sewing machine according to the first embodiment in a partially broken state;

Fig. 3 is a rear view showing the structure of the sewing machine according to the first embodiment.

Fig. 4 is a top view showing the structure of the sewing machine according to the first embodiment.

Figure 5 is a side view (a) and a front view (b) showing the structure of the cloth cutting blade and the mesh receiving.

6 is a block diagram showing a cloth cutting control device of the sewing machine.

7 is a diagram showing pattern data.

8 is a scalpel no. Figs. (A) and (b) show data corresponding to.

Fig. 9 is a diagram (a) showing the shape of the knitting seam formed in the eyelet buttonhole, (b) showing the data table, and (c) showing the shape of the knitting seam formed in the lying eye buttonhole (c). )to be.

Fig. 10 is a diagram showing memory switch data.

11 is a view showing an operation panel.

Fig. 12 is a flowchart showing the flow of button knitting seam forming work.

Fig. 13 is a flowchart showing the flow of memory switch setting.

Fig. 14 is a flowchart showing the flow of data setting.

Fig. 15 is a flowchart showing the flow of the cloth cutting knife operation.

Fig. 16 is a diagram showing a method for calculating a scalpel falling position.

Fig. 17 is a perspective view (a) showing the structure of the cloth cutting blade and a perspective view (b) showing the structure of the measuring bowl.

Fig. 18 is a side view showing the main structure of the sewing machine according to the second embodiment in a partially broken state;

Fig. 19 is a front view showing the main structure of the sewing machine according to the second embodiment in a partially broken state;

Fig. 20 is a plan view from above showing a scalpel unit arranged on the sewing machine of Fig. 18;

FIG. 21 is a side view showing the scalpel unit and the suction device connected thereto in FIG. 20 and partially broken.

Fig. 22 is a side view showing the operation of the cloth cutting device with the scalpel unit of Fig. 20, (a) shows a state where the eyelet scalpel member stands up, and (b) shows a state where the eyelet scalpel member falls down.

Fig. 23 is a side view showing the operation of the cloth cutting device using the stepped messial as the mesial and having the scalpel of Fig. 20, (a) is a state in which the eyelet scalpel member stands up, and (b) is the eyelet scalpel. The state where the member fell down is shown.

FIG. 24 is a view for explaining the shape of forming the eyelet button hole in the operation of FIG. 22 in order; FIG.

FIG. 25 is a view for explaining the order of forming the eye holes laid down during the operation of FIG. 22 or FIG.

FIG. 26 is a view for explaining the order of forming the eyelet button hole in the operation of FIG.

FIG. 27 is a block diagram showing a cloth cutting control device of the sewing machine of FIG.

Fig. 28 is a flowchart showing the flow of the cloth cutting operation.

Fig. 29 is a view for explaining a method for calculating a mesial drop position.

30 is a diagram schematically showing four cloth cutting patterns in the cloth cutting device of the sewing machine of FIG.

Fig. 31 is a view showing a scalpel unit as modified example 1 of the second embodiment, in which (a) is a plan view from above and (b) is a side view.

FIG. 32 is a side view showing the operation of the cloth cutting device with the scalpel unit of FIG. 31, (a) is a state in which the eyelet scalpel member is moving forward, and (b) is a state in which the straight scalpel member is evacuated. do.

Fig. 33 is a view showing a cloth cutting device as Modification Example 2 of the second embodiment, in which (a) shows a state in which the measuring bowl stands up, and (b) shows a state in which the measuring bowl has fallen and retracted.

Fig. 34 is a view showing a scalpel unit as modified example 3 of the second embodiment, in which (a) is a plan view from above and (b) is a side view.

35 shows conventional pattern data.

36 shows the scalpel no. (A)-(d) which shows the data corresponding to this.

※ Explanation of symbols about main part of drawing ※

10: sewing machine 50: cloth cutting control device of the sewing machine

52: memory means (RAM) 53: memory means (EEPROM)

59: changing means (operation panel) 60: cloth cutting means

61: cloth cutting scalpel 61a: eyelet scalpel

61b: straight scalpel 62: scalpel

90: eyelet part 91: straight part

92: eyelet buttonhole 93: straight hole

14: transfer table (relative movement means) 100: scalpel unit

101: eyelet scalpel member 101b: eyelet scalpel

101e: cloth waste path 102: straight scalpel member

102b: straight blade 103: Mesto base

104: Foundation for Eyelet Scaling 104a: Cloth Garbage Path

107: point axis 108: spring (moving means)

110: air cylinder (moving means) 114: cylinder pin

116: Link 122: Cloth Garbage Guard

134: aspirator 160: flat scalpel

167: step scaffolding 170: scalpel drive means (cloth cutting drive means)

180: control device 200: sewing machine

201: cloth cutting device 300: measuring unit

303: meso base member 304: foundation for eyelet scalpel

304a: cloth waste path 400: cloth cutting device

401: eyelet scalpel 402: straight scalpel

403: Mess undertooth 404: Eyelet scalpel underlay

410: scalpel mounting base 411: cloth cutting scalpel

412: eyelet female portion 413: straight female portion

416: cloth trash suit 420: scalpel unit

500: scalpel unit 501: scalpel member for eyelet

501a: cloth waste path 501b: eyelet scalpel

502: straight scalpel member 502b: straight scalpel

503: member of the meso stand 504: rotating meso stand

504b: first triangle cam 504c: second triangle cam

504d: Cloth Garbage Path 517a: Mobile Cam

In order to solve the above problems, for example, as shown in Figs. 1 to 16,

The cloth cutting control apparatus 50 of the sewing machine of Claim 1 is arrange | positioned at the sewing machine 10 which forms a seam around the buttonhole of a to-be-sealed object, and forms a seam at the same time, and the eyelet part 90 ) And a cloth cutting blade 61 having an eyelet scalpel portion 61a for forming the eyelet portion of the eyelet button hole 92 formed of the straight portion 91 and a straight scalpel portion 61b for forming the straight portion; The eyelet scalpel is provided with a cloth cutting means (60) having a scalpel (62) disposed opposite to the cloth cutting blade, and the cloth cutting blade is moved relative to the mass tray to cut the sewing object. A cloth for a sewing machine which controls both the portion and the straight scalpel to form eyelet button holes in the to-be-sealed material, and at the same time controls to form a straight hole 93 in the to-be-sealed material with the straight scalpel. A single control device, comprising storage means (RAM 52, EEPROM 53) for storing a plurality of control data for forming the button hole and the knitting seam, wherein the control data includes data relating to the length of the button hole (ml- lc) and data (ml) regarding the length of the knitting seam are included to control the driving of the cloth cutting means based on the control data.

According to the cloth cutting control apparatus of the sewing machine of Claim 1, the to-be-sealed object is made using both an eyelet scalpel and a straight scalpel on the basis of control data including data concerning the length of the buttonhole and data about the length of the knitting seam. The eyelet button hole is formed in the control unit so as to be formed. Therefore, if the straight scalpel is moved to the rear portion of the straight portion to cut the object to be cut sequentially, the length of the straight portion of the eyelet button hole can be changed without replacing the scalpel or the scalpel.

On the basis of the control data including data on the length of the buttonhole and data on the length of the knitting seam, a control is made so that a straight hole can be formed in the to-be-sealed object only by a straight scalpel. Therefore, if the straight scalpel is moved to the rear part of the straight hole and the cut object is sequentially cut, the length of the straight hole can be changed without replacing the scalpel or the receiving tray.

Moreover, while using the cloth cutting blade which has the eyelet scalpel part which forms the said eyelet part of the eyelet button hole which consists of an eyelet part and a straight part, and the straight scalpel part which forms the said straight part, the data regarding the length of a buttonhole and the length of a knitting seam It is possible to set the data for each as a separate value. Thus, for example, after forming the seam seams, a latch may be formed to tie the two points together to prevent loosening or reinforcement of the sewing start point and the sewing end point. However, for example, the straight part of the eyelet buttonhole is If it extends to the position to be fitted at both points, this straight part exists, and the needle may fall to the part (incision part) where there is no to-be-sealed object, and the sewing thread may be defective, but data about the length of the buttonhole By setting it, it is possible to prevent the straight portion from extending to the position where the sewing start point and the sewing end point are fitted, and the aforementioned sewing failure can be prevented.

The cloth cutting control apparatus of the sewing machine of Claim 2 is a cloth cutting control apparatus of the sewing machine of Claim 1, The eyelet button hole is formed in the to-be-sealed object by using both the said eyelet scalpel part and the said straight scalpel part in the said control data. In this case, the data lc for changing the length of the straight portion of the eyelet button hole is included.

According to the cloth cutting control apparatus of the sewing machine according to claim 2, the same effect as in claim 1 can be obtained, and the eyelet button hole is formed in the eyelet scalpel and the straight scalpel, and then the straight scalpel is moved to the rear part of the straight portion. If the object to be sealed is sequentially cut based on the data for changing the length of the straight portion of the button hole, the straight portion of the eyelet button hole can be extended based on the data for changing the length of the straight portion, and It is possible to form button holes corresponding to various specifications without replacing the base.

The cloth cutting control apparatus of the sewing machine of Claim 3 is a cloth cutting control apparatus of the sewing machine of Claim 1 or 2, The control data of this linear hole when forming a linear hole in a to-be-sealed object only by the said straight scalpel part. And a data (cc) for changing the formation position along the longitudinal direction of the seam and data (lc) for changing the length of the straight hole.

According to the cloth cutting control apparatus of the sewing machine according to claim 3, the same effect as in claim 1 or 2 can be obtained, and at the same time, data for changing the position of forming a straight hole along the longitudinal direction of the seam can be set. A straight hole can be formed at an arbitrary position for the knitting seam, and data for changing the length of the straight hole can be set so that the length of the straight hole can be arbitrarily changed. It is possible to form button holes corresponding to various specifications without replacing the measuring bowl.

The cloth cutting control apparatus of the sewing machine of Claim 4 is a cloth cutting control apparatus of the sewing machine of Claim 1, The control data includes data ma regarding the length of the said eyelet scalpel part, and data regarding the length of the said straight scalpel part mb. ) And data mc concerning the length between the eyelet scalpel portion and the straight scalpel portion.

According to the cloth cutting control apparatus of the sewing machine according to claim 4, the same effect as in claim 1 can be obtained, and the shape of the cloth cutting blade can be easily identified, and the eyelet is used when forming the eyelet button hole using the cloth cutting blade. The control device can easily calculate the length of the to-be-sealed portion of the cut-out portion and the straight cut portion that are not cut by the scalpel portion and the straight scalpel portion, and use the straight scalpel portion to improve workability of the buttonhole forming operation. You can.

The cloth cutting control apparatus of the sewing machine of Claim 5 is a cloth cutting control apparatus of the sewing machine of Claim 1, The eyelet button hole is formed in a to-be-sealed object using both said eyelet scalpel part and the said straight scalpel part in said control data, or It is characterized in that the selection data (ss) for selecting whether to form a straight hole in the object to be sewn with only the straight scalpel.

According to the fabric cutting control apparatus of the sewing machine of claim 5, the same effect as in claim 1 can be obtained, and the eyelet button hole is formed in the object to be sewn using both the eyelet mes and the straight mes, or the object to be sewn with only the straight mes. Since the selection data for selecting whether to form a straight hole in the hole can be set, eyelet button hole or straight hole can be easily formed. For example, when forming a straight hole, There is no need to replace with a predetermined cloth cutting knife corresponding to the shape.

The cloth cutting control apparatus of the sewing machine of Claim 6 is a cloth cutting control apparatus of the sewing machine of Claim 1, The said control data is any one of the said cloth cutting scalpel or the scalpel which moves when forming a button hole in the to-be-sealed object. It is characterized in that the data relating to the rising height of the (transportable scalpel height) is included.

According to the fabric cutting control apparatus of the sewing machine of claim 6, the same effect as that of claim 1 can be obtained, and at the same time, when the button hole is formed in the to-be-sealed material, it is moved. Since data relating to the rising height of either the cloth cutting blade or the mesial can be set, if this data is set at a height almost equal to the thickness of the material to be sealed, As a result, the cycle time for forming the buttonholes can be shortened.

The cloth cutting control apparatus of the sewing machine of Claim 7 is a cloth cutting control apparatus of the sewing machine of Claim 1, It is characterized by including the change means (operation panel 59) which changes the content of the said control data.

According to the cloth cutting control apparatus of the sewing machine according to claim 7, the same effect as that of claim 1 is provided, and the changing means for changing the contents of the control data is used. Can be formed.

Moreover, in order to solve the said subject, invention of Claim 8 is as shown, for example in FIGS. 18-24,

It is arranged in the sewing machine 200 to form a button seam on the sewing object and at the same time form a seam around the button hole,

Eyelet scalpel portion (eyelet scalpel 101b) forming the eyelet portion of the eyelet button hole 92 formed of the eyelet portion 90 and the straight portion 91, and a straight scalpel portion (linear scalpel 102b) forming the straight portion. Cloth cutting scalpel having a)), an eyelet scalpel portion 160b which is disposed to face the fabric cutting scalpel up and down and coincides with the eyelet scalpel portion, and a straight scalpel portion 160c that matches the straight scalpel portion. A cloth cutting means having a measuring blade (flat scalpel 160 or step scalpel 167) with

It is provided with a cloth cutting drive means (metz receiving drive 170) for driving one side in the vertical direction so that the cloth cutting scalpel and the mass receiving side is folded.

The cloth cutting means is a cloth cutting device 201 of a sewing machine for cutting the sewing object to form a buttonhole when the cloth cutting scalpel and the mesial plate comes in contact with each other,

At least one of the eyelet scalpel and the straight scalpel of the cloth cutting blade is configured to be movable so as to take a first position in which the object to be cut is matched with the scalpel and a second position that does not coincide with the scalpel. Become,

And a moving means (air cylinder 110, spring 108) for moving between the first and second positions with respect to the first and second positions of the eyelet scalpel and the straight scalpel. It features.

According to the invention of claim 8, at least one of the eyelet scalpel portion and the straight scalpel portion of the cloth cutting scalpel coincides with the scalpel and the first position capable of cutting the object to be cut, does not coincide with the scalpel. Can move the second position. Accordingly, various button holes can be formed.

For example, the mesial receiver is a type in which the eyelet scalpel portion and the straight scalpel portion are formed flat. When only the eyelet scalpel portion is moved by the moving means, when the eyelet scalpel portion is in the first position, it forms an eyelet button hole. When in the 2nd position, a straight button hole (lying eye hole) can be formed. When only the straight scalpel moves, the eyelet button hole is formed when the straight scalpel is in the first position, and only the eyelet portion is formed when the straight scalpel is in the second position. If both sides are movable, three kinds of eyelet button holes, lying eye holes, and eyelet parts can be formed. Accordingly, various kinds of buttonholes can be formed without replacing the cloth cutting blade.

In addition, as shown in claim 17, the relative cutting means (e.g., the conveyer 14) which makes the cloth cutting means relatively movable in a direction parallel to the straight portion of the eyelet buttonhole formed in the object to be sewing. ), In addition to the effect of claim 8, it is possible to cut and add the cloth cutting means while moving the cloth cutting means relative to the to-be-seamed object without changing the cloth cutting blade, thereby forming button holes of various lengths.

The invention described in claim 9 is a cloth cutting device for a sewing machine according to claim 8, for example, as shown in Figs. 22 and 23,

Flat scalpel 160 formed in the same horizontal plane as the scalpel receiving portion and the straight scalpel receiving portion, and the stepped scalpel (167) in which the step is arranged so that the eyelet scalpel portion and the straight scalpel receiving portion are formed on different horizontal surfaces. It is configured to be attached to both sides of the, characterized in that to use any one attached.

According to the invention of claim 9, it is possible to attach both a flat scalpel and a step scalpel as a scalpel. This increases the variety of choices available. For example, even if only the eyelet scalpel can move, using the step scalpel having a step so that the eyelet scalpel portion approaches the scalpel side, it is possible to form only the eyelet portion, and thus, the eyelet button hole, the straight portion, Only three eyelet parts can be formed. On the contrary, even when only the straight scalpel can be moved, if the step scalpel has a step so that the straight scalpel portion approaches the scalpel side, three types of eyelet button hole, straight portion and eyelet portion can be formed. .

If it is unnecessary to form only the eyelet portion, a planar scalpel can be used that can form the eyelet buttonhole more efficiently than the step scalpel.

The invention of claim 10 is a cloth cutting device for a sewing machine of claim 9, for example, as shown in FIG.

Storage means (RAM 52) for storing a plurality of control data for forming a buttonhole and a knitting seam;

The control data includes the formation of an eyelet button hole by a planar scalpel and a cloth cutting blade, any one of a flat scalpel tray or a step scalpel tray, and the formation of a straight hole by only the straight scalpel of the cloth cutting blade; Hole type selection data (data item 10) for selecting one of the formation of the eyelet button hole by the step scalpel and the cloth cutting knife and the formation of the eyelet part by the step scalpel and the eyelet scalpel only;

And cloth cutting driving means and control means (CPU 54) for controlling and driving the moving means at a predetermined timing to form a hole selected from the hole type selection data.

According to the invention as set forth in claim 10, it is possible to attach both the planar scalpel and the step scalpel to the hole type selection data by using the eyelet scalpel and the straight scalpel of the flat scalpel and cloth cutting scalpel. Formation of eyelet buttonholes, formation of flat mesial or step scalpel, straight hole formed only by straight scalpel, eyelet scalpel and straight scalpel of step scalpel and cloth cutting scalpel By selecting one of the eyelet button holes by the step and the formation of the eyelet part only by the stepped mesial and the only part of the eyelet by the control means. Is formed.

In the cloth cutting device of the sewing machine of Claim 8, the movement by a movement means specifically mentions the structure similar to Claims 11-13.

That is, the invention described in claim 11 is a cloth cutting device for a sewing machine according to claim 8,

The eyelet scalpel portion is fixed to the eyelet scalpel base 104, and the eyelet scalpel base is rotated so as to move between the first position and the second position.

In addition, the invention described in claim 12 is a cloth cutting device for a sewing machine according to claim 8, for example, as shown in Figs.

The eyelet scalpel portion (the eyelet scalpel 101b) is fixed to the base of the eyelet scalpel 304, wherein the base of the eyelet scalpel slides in a linear shape to move between the first position and the second position. It is done.

The invention described in claim 13 is a cloth cutting device for a sewing machine according to claim 8, for example, as shown in FIG.

The eyelet scalpel (eyelet scalpel 501b) and the straight scalpel (straight scalpel 502b) are both fixed to the cloth cutting meso stand (rotating me base 504), and the eyelet meso part with the cloth cutting meso base rotating. And a linear scalpel alternately moves between the first position and the second position.

The invention described in claim 14 is a cloth cutting device for a sewing machine according to claim 8, wherein the eyelet scalpel is fixed to the eyelet scalpel base 104, and the first position and the second position according to the movement of the eyelet scalpel base. Is configured to move

Cloth waste path (101e, 104a) for recovering the eyelet-shaped cloth waste generated by forming the eyelet portion in the to-be-sealed material by matching the eyelet scalpel portion and the eyelet scalpel portion from the inner side of the eyelet scalpel portion and the base of the eyelet scalpel to the outside; ) Is formed in the direction which does not prevent the movement of the eyelet female part,

The cloth waste that has exited the cloth waste path is characterized in that it is configured to be discharged into the pipe 133 connected to the aspirator 134 and not connected to the cloth waste path.

Forming the eyelet portion necessarily causes cloth waste, and recovers it with a predetermined path leading to the eyelet scalpel than before, but it is practical to determine which path to recover when the eyelet scalpel is configured to move the first position and the second position. .

According to the invention described in claim 14, the cloth waste path for recovering cloth waste generated when the eyelet portion is formed is formed from the inside of the eyelet scalpel and the base of the eyelet scalpel to the outside in a direction that does not prevent movement of the eyelet scalpel. As a result, cloth waste can be collected on a course that does not interfere with the movement of the eyelet scalpel. In addition, the cloth waste discharged from the cloth waste path is surely sucked to be discharged into the pipe 133 which is connected to the aspirator 134 and not connected to the cloth waste path. In addition, since the cloth waste path and the pipe are not connected, that is, the path for recovering the cloth waste is divided in the middle, so that only the cloth waste path on the scalpel side can be changed in accordance with the moving direction of the eyelet scalpel. Freedom of design of the route is high.

The invention described in claim 15 is, for example, as shown in FIG.

It is arranged in the sewing machine which forms a buttonhole in the to-be-sealed material and simultaneously forms a knitting seam around the buttonhole,

A cloth cutting blade having an eyelet scalpel portion 412 forming the eyelet portion of the eyelet button hole 92 composed of the eyelet portion 90 and the straight portion 91 and a straight scalpel portion 413 forming the straight portion ( 411, the eyelet receiving portion (upper and lower receiving portion (401)) arranged to face up and down the cloth cutting blade, and matching with the eyelet measuring portion, and a straight receiving portion (straight line) matching with the straight measuring portion; Cloth cutting means having a scalpel having a scalpel receiver 402,

It is provided with a cloth cutting drive means for driving one side in the up and down direction so that the cloth cutting blade and the meso trays are folded,

The cloth cutting means is a cloth cutting device 400 of the sewing machine to form a buttonhole by cutting the sewing object when the cloth cutting blade and the mesquite match each other,

At least one of the eyelet scalpel receiving portion and the straight scalpel receiving portion of the scalpel is moved to take a first position in which the object to be cut is matched with the cloth cutting blade and a second position that does not coincide with the cloth cutting blade. Is configured to be

Moving means (air cylinder 110, spring 108) for moving between the first position and the second position with respect to taking the first position and the second position of the eyelet scalpel portion and the linear scalpel portion. It is characterized by including.

According to the invention as set forth in claim 15, at least one of the eyelet receiving portion and the straight receiving portion by the moving means of the receiving portion coincides with the cutting edge of the cloth, and the first position that does not coincide with the cutting edge of the cloth. The second position can be moved. Accordingly, various button holes can be formed.

For example, the cloth cutting scalpel is a type in which the eyelet scalpel portion and the straight scalpel portion are formed almost flat. When only the eyelet scalpel portion moves, the eyelet buttonhole forms an eyelet button hole when the eyelet scalpel portion is in the first position. If you are in, can form a straight button hole (lying eye hole). When only the straight scalpel receiving part is moved, the eyelet button hole is formed when the straight scalpel receiving part is in the first position, and only the eyelet part is formed when the straight scalpel receiving part is in the second position. If both are movable, three types of eyelet button holes, lying eye holes, and eyelet parts can be formed. Therefore, various button holes can be formed without replacing the measuring bowl.

In addition, as shown in claim 17, the relative moving means (e.g., the conveyer 14) for allowing the cloth cutting means to be relatively movable in a direction parallel to the straight portion of the eyelet button hole formed in the object to be processed. With this arrangement, it is possible to cut and add the cloth cutting means while moving the relative to the sewing object without replacing the measuring bowl, and form button holes of various lengths.

Furthermore, according to claim 17, the whole cloth cutting means may move with the relative moving means, and the to-be-processed object may move.

The cloth cutting scalpel and the scalpel of the cloth of claim 8 and claim 15 may be on either side.

In the cloth cutting device of the sewing machine according to claim 15, the movement by the moving means is, for example, as the invention described in claim 16, the eyelet mass receiving portion is fixed to the base 404 for the eyelet mass receiving, and the eyelet mass receiving The use base may be rotated to move between the first position and the second position.

An embodiment of the present invention will be described based on the following drawings.

<First Embodiment>

The case where the cloth cutting control device of the next sewing machine is applied to the button knitting sewing machine (hereinafter referred to as "the sewing machine") will be described in detail.

The sewing machine 10 shown in FIGS. 1-4 forms a button | hole hole by automatic control, and performs sewing sewing around this button | hole hole. As the button hole, for example, as shown in Fig. 9 (a), an eyelet hole formed by connecting a liquid hole (eyelet portion 90) and a straight hole (straight portion 91) ( 92 (hereinafter also referred to as an "eyelet button hole") and a lying eye hole 94 formed by only a straight hole 93 as shown in Fig. 9C. 1 shows a state in which the cloth cutting blade 61 is lowered on the receiving tray 62, and FIGS. 2 and 3 show a state in which the cloth cutting blade 61 is placed at the origin position.

The sewing machine 10 includes a bed portion 11 on which an object to be sewn is placed on an upper surface side, a footnote portion 12 in a state of being raised upward from the bed portion 11, and a bed portion 11 from the footnote portion 12. ) Arm portion 13 extending in the longitudinal direction on the), the transfer table 14 for moving the object to be sewing in the horizontal plane, the fabric pressing portion 16 for pressing the fabric on the upper surface of the transfer table 14, the sewing machine 10 A control device 50 (see Fig. 6) for controlling the operation, a cloth cutting means 60 (see Fig. 5) for forming a buttonhole, and a cloth cutting blade driving means for moving the cloth cutting means 60 to move ( A scalpel driving means) 20 and the like. In addition, the fabric cutting blade 61 is lowered by pressing the cloth and the receiving tray 62 in a state where the cloth is placed on the receiving tray 62 under the control of the measuring means 20 to form a button hole. Equipped with.

First, the cloth cutting means 60 is demonstrated using FIG.

As shown in FIG. 5 (a), the cloth cutting means 60 includes a cloth cutting blade 61 and a scalpel 62 disposed to face the lower side of the cloth cutting blade 61. In addition, as shown in Fig. 5, the cloth cutting blade 61 is a so-called eyelet blade portion 61a that forms the eyelet portion 90 and a straight blade portion 61b that forms the straight portion 91, which are not present on the same height. As several scalpels, in the sewing machine shown in this embodiment, not only this several scalpels but also the illustration is omitted but the portion forming the eyelet portion 90 and the portion forming the straight portion 91 are present at approximately the same height. A so-called standard scalpel or a scalpel having only a straight blade for forming a lying eye hole 94 is also used.

The cloth cutting blade 61 is constituted by the eyelet blade portion 61a and the straight blade portion 61b as described above, and the straight blade portion 61b is fixed to the eyelet blade portion 61a by the screw 61c. .

The straight scalpel portion 61b protrudes downwardly from the eyelet scalpel portion 61a in the direction of the scalpel 62, which is arranged to face the blade portion, and the blade portion is inclined shape in which one end of the eyelet scalpel portion 61a side protrudes from the other end. Becomes

The scalpel 62 has a groove portion 62a into which the straight scalpel portion 61b can be inserted on the side opposite to the straight scalpel portion 61b (see FIG. 5 (b)), and faces the eyelet scalpel portion 61a. The side has the flat part 62b which contacts the eyelet female part 61a. That is, the depth of the groove portion 62a is deeper than the depth from the tip of the blade portion of the straight blade portion 61b to the tip of the blade portion of the eyelet blade portion 61a so that the eyelet blade portion 61a and the flat portion 62b can contact each other. have.

In addition, a gap portion 61d is disposed between the straight scalpel portion 61b and the eyelet scalpel portion 61a, and thus, a portion not cut between the straight portion 91 and the eyelet portion 90 of the eyelet button hole ( The following is called "cut out".

Then, when the cloth cutting blade 61 having such a structure is lowered, the control device 50 controls the driving of the blade driving means 20 to be described later, so that the cloth is cut by only the straight blade portion 61b. Position (hereinafter referred to as the "straight line cutting position") and the position of the scalpel where the cloth is cut by both the straight scalpel portion 61b and the eyelet scalpel portion 61a (hereinafter, referred to as an "eyelet portion cutting position"). It has a structure which can stop a scalpel at both positions.

The length of the straight scalpel 61b is equal to or shorter than the shortest length of the straight portion 91 of the eyelet hole 92 to be formed. In addition, the eyelet scalpel portion 61a may be in an almost liquid shape in which only the eyelet portion is cut off, or may have a shape in which a few straight portions are provided from the lower end of the eyelet.

Further, as described above, since the straight blade portion 61b is fixed to the eyelet blade portion 61a by the screw 61c, the straight blade portion 61b can be attached to or detached from the eyelet blade portion 61a. When forming the eyelet hole 92 having a different shape only in the length of the), the straight scalpel 61b is lowered several times with respect to the cloth as described below, and the straight scalpel 61b is not extended. It is also possible to carry out by exchange.

Next, a scalpel driving means 20 for driving the cloth cutting scalpel 61 will be described. 1 to 4, the female driving means 20 is a cloth cutting motor 21, a ball screw 24, a link arm 31, a drive shaft 35, a drive gear 39 and a direct drive shaft (pulse motor) 40).

The cloth cutting motor 21, which is an electric driving means, is fixed to the bed portion 11, and the driving force of the cloth cutting motor 21 is transmitted to the ball screw gear 23 engaged with each other through the motor gear 22. The ball screw gear 23 is attached to the ball screw 24 disposed in the vertical direction so as to be free to rotate with respect to the sewing machine 10. Therefore, the ball screw 24 rotates through the ball screw gear 23 by the driving force of the cloth cutting motor 21.

The ball screw nut 27 disposed on the ball screw 24 is movable up and down along the ball screw 24 by the rotation of the ball screw 24. The housing 28 is fixed to the upper part of the ball screw nut 27, and moves together with the ball screw nut 27.

Two link arms 31 are arranged to sandwich both sides of the housing 28 (only one in FIG. 3), each end of which is rotatably attached to both sides of the housing 28, and the other end of the link shaft 32b. It is fixed so as to be rotatable to one end of the lever 34 formed in two divided shapes by the.

As shown in FIG. 4, the drive shaft 35 is substantially parallel to the sewing machine frame 15 so as to be freely rotated. One end of the drive shaft 35 is attached to the other end of the lever 34 so as to be free to rotate. Then, the lever 34 is driven through the link arm 31, and when the one end side (the link arm 31 side) is rotated downward with the drive shaft 35 as a point, the drive shaft 35 is driven by the lever 34. ) Is supposed to rotate.

In addition, the drive gear 39 is fixed to the other end of the drive shaft 35. This drive gear 39 is engaged with the rack 41 formed in the upper part of the linear drive shaft 40 as shown in FIG. 2, and rotates the linear drive shaft 40 by rotating with the drive shaft 35. As shown in FIG.

The linear motion shaft 40 is housed in a substantially cylindrical linear motion metal 42 in which the drive gear 39 side is cut out, and the linear motion metal 42 has a longitudinal direction of the linear motion metal 42 disposed at two inner surfaces. The convex portion 44 disposed in two circumferential directions on the outer surface of the linear motion shaft 40 is fitted to the groove portion 43 extending in parallel so as to move freely along the groove portion 43 so as to be movable up and down without rotating from side to side. Done.

In addition, a scalpel mounting base 63 is disposed at the lower end of the linear drive shaft 40, and a cloth cutting scalpel 61 is attached to the scalpel mounting base 63. In addition, a scalpel 62 is attached to the support base 64 disposed on the bed 11 under the cloth cutting blade 61.

Next, the operation of the scalpel driving means 20 will be described.

When the cloth cutting motor 21 is operated, the ball screw 24 rotates through the motor gear 22 and the ball screw gear 23, and the ball screw nut 27 and the housing 28 are placed on the ball screw 24. To descend. Accordingly, the two link arms 31 connected to the housing 28 are also lowered, and one end of the lever 34 is pushed down clockwise in FIG. 3. The lever 34 also rotates the drive shaft 35 clockwise in FIG. 3.

When the drive shaft 35 rotates, the drive gear 39 disposed on the drive shaft 35 rotates in the counterclockwise direction in FIG. 2, and the linear drive shaft 40 having the rack 41 engaged with the drive gear 39. Then, the cloth cutting blade 61 is lowered from the rising position to the straight line cutting position or the eyelet cutting position, thereby cutting the sewing object of the mass receiver 62.

After cutting, the lever 34 rotates by rotating the cloth cutting motor 21 reversely and moves the ball screw nut 27 and the housing 28 upward, and the drive shaft 35 rotates counterclockwise in FIG. In addition, since the drive gear 39 rotates in the clockwise direction in FIG. 2, the linear drive shaft 40 is raised to move the cloth cutting blade 61 away from the object to be sewing.

Next, the cloth cutting control device 50 of the sewing machine will be described.

As shown in FIG. 6, the control device 50 is constituted by a driving circuit such as a ROM 51, a RAM 52, an EEPROM 53, a CPU 54, an interface 55, a main shaft motor driving circuit 56a, and the like. Various motors such as the main shaft motor 70, the start switch 57, the push switch 58, the operation panel 59 (see FIG. 11), and the like are connected to the control device 50.

In the ROM 51, control programs and control data necessary for forming the buttonhole and the knitting seam are written.

The RAM 52 (memory means) stores several pattern data, and at the same time, one data selected through the operation panel 59 in these data. When the value of the pattern data is changed, the value after the change is also stored. In addition, the selection method of these data and the method of changing data content are mentioned later. The RAM 52 also functions as a memory area that is temporarily used in various processing during sewing. In addition, the seam data generated from the pattern data, the scalpel drop position of the multiple scalpels described later, and the like are also stored.

The EEPROM 53 (memory means) stores a plurality of memory switch data. When the value of the memory switch data is changed, the value after the change is also stored.

As the pattern data, for example, there are nine pattern data as shown in FIG. 7, and specific values corresponding to data items 1 to 10 are set in each pattern data as in pattern data 1.

Data item 1 sets the kind of scalpel which forms a button hole. As shown in Fig. 8 (a), the shape of the eyelet scalpel 61a is defined by the width ew and the length el, the length of the whole cloth cutting scalpel 61 is defined by ma, and the length of the straight scalpel 61b is defined. Is defined by mb, and the length of the gap portion 61d between the eyelet scalpel portion 61a and the straight scalpel portion 61b is defined by mc, and these combinations are previously stored as a table as shown in FIG. 8 (b). It is stored in the switch data.

In data item 1, the Scale No. The so-called standard scalpels, i.e., straight scalpels and eyelet scalpels, which are not shown, are set at 0 to 5, and so-called scalpels, i.e., straight scalpels 61b and eyelet scalpels 61a, are set several times. A gap portion 61d is disposed between them, and a scalpel that needs to be lowered several times with respect to the cloth for cutting of the cut portion as described below is set. In addition, the scalpel No. 0 forms a lying eye hole 94. It corresponds to a scalpel provided with only a blade having a straight shape.

Data items 2-6 are data regarding the number of needles and the length of each part which comprises the eyelet knitting seam shown to Fig.9 (a). That is, as shown in FIG. 9 (b), data item 2 has a cutting length (ml), data item 3 has a straight needle number (ln), data item 4 has an eyelet needle number (en), and data item 5 has a straight part scalpel. The space (ls) and data item 6 are the eyelet volume space (es).

Data item 7 selects the sun knife which cuts the cloth before cutting, and the after knife which cuts the cloth after cutting.

Data item 8 is a cut length correction (lc) for changing (correction) the length of the straight portion 91, and data item 9 is a straight hole (e.g., when forming a flat knitting seam shown in Fig. 9C). 93. The lying eye offset amount (cc) for offsetting the upper part of the knitting seam lying down at the position where the forming position is laid, and the data item 10 includes a cloth cutting blade having an eyelet scalpel portion 61a and a straight scalpel portion 61b. 61 is a lying eye selection (ss) selected when forming the eye hole 94 lying on the cloth by lowering the straight portion 91 to the cutting position of the straight portion 91.

Ml corresponds to data relating to the length of the cut seam, and lc denotes data for changing the length of the straight portion 91 of the eyelet hole 92 and the straight hole 93 of the lying eye hole 94. Corresponds to data for changing the length of, where ml-lc corresponds to data regarding the length of the buttonhole, cc denotes a position for forming the straight hole 93 along the longitudinal direction of the seam. Corresponding to the data, ma corresponds to data relating to the length of the eyelet scalpel portion 61a, mb corresponds to data relating to the length of the straight scalpel portion 61b, and mc corresponds to the eyelet scalpel portion 61a and straight scalpel. Corresponding to the data regarding the length between the sections 61b, ss forms the eyelet button hole 92 in the sewing object by using both the eyelet scalpel section 61a and the straight scalpel section 61b or the straight scalpel section. Selects whether to form a straight hole 93 in the to-be-sealed object by using only (61b) Corresponds to the selection data for

As the memory switch data, for example, as shown in FIG. 1 to 36 are set, and values corresponding to the items described in the "Contents of the memory switch" column are set in each memory switch as shown in the "Setting value" column. For example, the memory switch No. 1 has a setting value of 2.1 mm for the eyelet width ew of the blade No. 1, and the memory switch No. 13 has a setting for the total blade length ma of the blade No. 6. The value is input to 18mm.

The CPU 54 controls a series of processes related to sewing on the button according to the control program and the control data of the ROM 51.

The CPU 54 is connected to the operation panel 59 via the interface 55, controls the display on the operation panel 59, and receives input signals input through the operation panel 59 to select and select various settings. Changes are to be made. The operator can select each data shown in FIG. 7, FIG. 10, etc. through the operation panel 59, or change the selected data.

The CPU 54 is also connected to the main shaft motor driving circuit 56a through the interface 55 to drive control the rotation of the main shaft motor 70. Spindle motor 70 is a motor for driving the looper mechanism for forming a seam in cooperation with the upper shaft or sewing machine needle to drive the sewing machine needle up and down.

In addition, the CPU 54 is connected to the X-axis motor driving circuit 56b through the interface 55 and is connected to the Y-axis motor driving circuit 56c through the interface 55, and the X-axis motor 71 and Y are connected. The feed table 14 is driven in a predetermined direction while driving control of the shaft motor 72 is performed.

The CPU 54 is connected to the swing motor driving circuit 56d via the interface 55 and controls and drives the swing motor 73. The swing motor 73 rotates the sewing machine needle and the looper, and a radial seam is formed around the eyelet hole 92 or the like.

In addition, the CPU 54 is connected to the cloth cutting blade driving circuit 56e through the interface 55, and controls the cloth cutting blade motor 74.

The CPU 54 is connected to the start switch 57 via the interface 55. When the start signal is input from the start switch 57, the CPU 54 drives the main shaft motor 70 and the like at a predetermined timing. And a cloth cutting process.

The CPU 54 is connected to the push switch 58 via the interface 55, and when the start signal is input from the push switch 58, the cloth push cylinder driving solenoid valve 75a connected to the cloth push cylinder 75 is provided. ) Is driven at a predetermined timing to cause the cloth presser 16 to move up and down.

The CPU 54 also detects the home position of the X-axis motor 71, the Y-axis motor 72, the swing motor 73, and the cloth cutting blade motor 74 through the interface 55. 71a, the Y-axis origin sensor 72a, the line member point sensor 73a, and the cloth cutting blade origin sensor 74, based on this signal in response to a signal indicating whether each of these motors returns to the origin position. Various control is performed with

The operating panel 59, which is a changing means in the present invention, has a pattern No. as shown in FIG. Display portion 59a, pattern No. +/- key 59b, data item display unit 59c, data item +/- key 59d, data display unit 59e, data +/- key 59f, data setting key 59g, ready key ( 59h).

Pattern No. The display unit 59a displays the currently selected pattern No. ("1" in FIG. 11), and displays the pattern no. By changing the numbers one by one in the range of 1 to 9 by the +/- key 59b, different pattern data can be selected.

The data item display portion 59c is the pattern number. The data items in the pattern data selected by the display unit 59a are displayed ("2" in FIG. 11) and other data items are changed by changing the numbers one by one within the range of 1 to 10 by the data item +/- keys 59d. You can choose.

When a data item is selected in the data item display unit 59c, a number set in advance for the data item is displayed on the data display unit 59e. The value can be changed by increasing or decreasing the number of the data display unit 59e by a predetermined interval within the predetermined range by the data +/- key 59f.

The data setting key 59g is a switch to operate when performing the data setting operation. That is, the data value can be changed by pressing the data setting key 59g. Selection or change of each item or number is confirmed by pressing the data setting key 59g again.

The preparation key 59h is a key for enabling preparation of the cutting operation and creating seam data or the like corresponding to the data value selected or reset after completion of the setting operation. The preparation key 59h also serves as a key for changing the memory switch data when pressed when the power is turned on.

Next, the flow of the button knitting seam forming operation will be described using the flowchart shown in FIG. 12.

First, when the preparation key 59h is also on-operated at the same time during the on-operation of the main power supply (not shown) of the sewing machine, i.e., Yes in step S100, the flow advances to step S101, and the memory switch described later is set.

If No in step S100 or after setting memory switch data in step S101, the flow advances to step S102.

In step S102, it is monitored whether the pattern No. +/- key 59b has been operated. When the operation is on, that is Yes, the process moves to step S103. Update is performed.

If it is No in step S102, or the pattern No. in step S103. After the update, the process proceeds to step S104.

In step S104, it is monitored whether or not the data setting switch has been operated, and when the operation is on, that is, Yes, data setting described later in step S105 is performed.

If No in step S104, or after setting data in step S105, the flow advances to step S106.

In step S106, the operation of the preparation key 59h is monitored. If it is not operated, i.e., No, the process returns to step S102. If it is operated, i.e., Yes, these data are stored in step S107 based on the set pattern data, the memory switch data, and the like. The data generated to drive the drive source of the needle, the seam data for each needle, the number of times of falling of the scalpel several times, the data about the position of the feed table 14, the driving amount of the cloth cutting motor 21 for driving the scalpel To include the data.

In step S108, the cloth press 16 descends and pushes the fabric to the upper surface of the transfer table 14, and in step S109, the X / Y motors 71 and 72, the turning motor 73, and the cloth cutting mes motor ( The home search for moving 74) to the home position is performed, and the cloth press 16 rises in step S110.

In step S111, the operation of the cloth pressing switch 58 is monitored, and if it is turned on, that is, in the case of Yes, the cloth pressing part 16 is lowered in step S112. The operator, for example, checks the pressing position of the cloth by the cloth pressing part 16 and the like, and when it is necessary to adjust the position of the cloth, etc., in step S113, the operation of the push switch 58 is performed again on step S114. The cloth press 16 rises, and returns to step S111.

If the cloth push switch 58 is not turned on in step S113, that is, No, the operation of the start switch 57 is monitored in step S115, and if it is turned on, that is Yes, the process proceeds to step S116. .

In step S116, it is determined whether the sun knife is selected from the data item "7" in the pattern data shown in FIG. If it is a sun knife, the cloth cutting knife operation | movement mentioned later in step S117 is performed.

In the case of No in step S116 or after the cloth cutting knife operation in step S117, the knitting operation is performed in step S118. This cutting operation includes a series of operations such as moving the transfer table 14 to the sewing start position, cutting the thread after cutting.

After the cutting operation is finished, the flow advances to step S119, and the transfer table 14, the needle bar, and the like move to the origin position.

Subsequently, in step S120, it is judged whether or not the humes are selected in the data item &quot; 7 &quot; in the pattern data. Is executed.

When it is determined in step S120 that it is not a postmese, or after the cloth cutting blade operation of step S121 ends, in step S122, the cloth press 16 is raised, and the operation monitoring state of the push switch 58 is returned again to step S111. By the on of the push switch 58, the above-described cutting operation is repeated.

Next, the flow of the memory switch setting in step S101 will be described using the flowchart of FIG.

First, in step S400, the item display section "1" of the operation panel 59 is displayed, and the set value of the memory switch No. 1 is displayed on the data display section 59e.

Subsequently, the operation of the data item +/- key 59d is monitored in step S401, and when it is turned on, that is, in case of Yes, the memory switch No. is updated in step S402 and displayed on the data item display part 59c. At the same time, the value is displayed on the data display unit 59e.

If No after step S402 or No in step S401, the routine proceeds to step S403.

In step S403, the operation of the data +/- key 59f is monitored, and when the operation is on, that is Yes, the set value corresponding to the memory switch No. displayed on the data item display unit 59c in step S404 is updated. The set value after the update is displayed on the data display unit 59e.

If No after step S404 or No in step S403, the routine proceeds to step S405.

In step S405, the operation of the preparation key 59h is monitored, and when no operation is performed, i.e., No, the process returns to step S401. In case of on operation, i.e. Yes, the operation proceeds to step S406. It is stored in the EEPROM 53 and then the flow proceeds to Step S102.

Next, the flow of data setting in said step S105 is demonstrated using the flowchart of FIG.

First, in step S300, "1" is displayed on the data item display part 59c of the operation panel 59, and the scalpel number set to data item 1 is displayed. Is displayed on the data display unit 59e.

Subsequently, the operation of the data item +/- key 59d is monitored in step S301, and when the operation is on, that is Yes, the data item number is updated in step S302 and displayed on the data item display unit 59c. The corresponding value is displayed on the data display unit 59e.

If No after step S302 or No in step S301, the flow proceeds to step S303.

In step S303, the operation of the data +/- key 59f is monitored, and when the operation is on, that is Yes, the value corresponding to the data item selected in step S304 is updated, and the value after the update is converted into the data display unit ( 59e). If No after step S304 or No in step S303, the flow proceeds to step S305.

In step S305, the operation of the data setting key 59g is monitored, and when it is turned on, that is, in the case of Yes, the data after the change is updated in step S306, and the routine advances to step S106. If the data setting key 59g is not operated in step S305, the flow returns to step S301.

Next, the flow of the cloth cutting knife operation in step S117 will be described using the flowchart of FIG. 15.

First, in step S200, it is determined, for example, whether a scalpel has been selected several times from the scalpel No. set in the data item "1" in the pattern data. In the case of not being a multiple scalpel, i.e., no, the cloth cutting scalpel 61 is lowered in step S201, and the eyelet button hole 92 is formed in the fabric. In addition, as a cloth cutting blade 61, a blade No. If 0, i.e., a scalpel having only a straight blade for forming the lying eye hole 94 is selected, the lying eye is formed by lowering the scalpel in step S201.

In addition, in the case where it is determined that the scalpel is several times in step S200, that is Yes, it is determined in step S202 whether the eye hole lying in the data item "10" in the pattern data is set. When the eye hole is not set, that is, the eyelet hole is set, the process returns to No in step S202, and the process proceeds to step S203.

In step S203, the cloth cutting blade 61 is lowered to the eyelet cutting position, so that the cloth has an eyelet portion 90 having the same shape as the eyelet blade portion 61a and the straight blade portion 61b of the cloth cutting blade 61. ) And a portion of the straight portion 91 is formed. In this state, since the above-mentioned cut | disconnected part exists in the cloth, the cloth cutting blade 61 is conveyed to the ball | feed-rate possible scalpel height (rising height) set by the memory switch No. 36 shown in FIG. 10 in step S204. (14) It raises from an upper surface, and moves the conveyance stand 14 to the scalpel falling position calculated by the said step S107 in step S205.

In step S206, the cloth cutting blade 61 is lowered to the straight line cutting position to cut the cut portion, and the flow advances to step S207. In addition, when using the scalpel which is not provided with the clearance part 61d, it does not need to be performed to step S204-206.

If it is determined in step S202 that the lying eyelet is set, the routine advances to Yes, and the flow proceeds to step S212.

In step S212, the conveyance stand 14 is moved to the 1st scalpel falling position calculated by the said step S107. In step S213, the cloth cutting blade 61 is lowered to the straight portion cutting position so that a part of the straight holes 93 having the same shape as the straight blade portion 61b of the cloth cutting blade 61 is formed in the cloth. It forms, and it transfers to step S207.

In step S207, it is determined whether the mass drop operation of the same number of times as the mass drop count calculated in step S107 has been performed, and in the case of No, the flow advances to step S208, up to the ball feedable knife height set by the memory switch as in the step S204. The cloth cutting blade 61 is raised to move the feed table 14 to the next scalpel falling position calculated in the step S107 in step S209. In step S210, the cloth cutting blade 61 is lowered to the straight line cutting position, and the cloth is cut by a predetermined amount to return to step S207.

In the case of Yes in step S207, that is, when a predetermined button hole is formed, the process advances to step S211, and the cloth cutting blade 61 moves to the origin position, and the process proceeds to step S118.

As described above, in steps S205, 209, and 212, by moving the feed table 14 by a predetermined amount, the position (mass falling position) of the cloth cutting blade 61 relative to the feed table 14 is relatively changed. Although a quantity of buttonholes will be formed, this scalpel drop position is calculated as follows, for example. In addition, in the following description, it is assumed that the eyelet portion 90 is formed at a predetermined position on the cloth by lowering the cloth cutting blade 61 while the feed table 14 is at the origin position for ease of understanding.

In addition, as shown in Fig. 16A, the position of the rear end portion of the straight blade portion 61b of the cloth cutting blade 61 is set as the blade falling position, and is shown using the Y coordinate. In addition, in a state where the cloth is first cut, the scalpel falling position is positioned at the origin (Y = O) in the Y direction.

First, the case where the eyelet hole 92 is formed in a cloth using FIG. 16A is demonstrated.

First, in the state where the cloth cutting blade 61 is first lowered to form the eyelet portion 90 in the cloth, the eyelet portion 90 is formed at a predetermined position on the cloth as described above, and the dropping position of the knife is Y = 0. (Refer to FIG. 16 (a) (1)).

Next, the scalpel drop position for cutting the cut portion is Y = mc because the length of the cut portion is mc (see Fig. 16 (a) (2)).

Next, a scalpel drop position (see Fig. 16 (a) (3)) for cutting the length of the straight portion 91 back by the length L is calculated as follows.

First, L = ml-lc-ma, and the recovery N for dropping the scalpel is represented by N = L / mb. If there is a remainder in L / mb, cut it up and make N = N + 1.

When the scalpel drop position of the scalpel drop of the i-th time (i = 1 to N) for cutting the straight portion 91 back is set to Yi, Yi = −L X i / N.

Then, i = N, i.e., Yi = -L at the point where the scalpel falls N times, and the cutting of the straight portion 91 is completed (see Fig. 16 (a) (4)).

However, when N = 0, that is, when it is not necessary to cut the straight portion 91 behind, the scalpel drop position after cutting the cut portion is not calculated.

Next, the case where the eye hole 94 lying in the cloth is formed using FIG. 16 (b) will be described.

First, the scalpel drop position when the fabric cutting scalpel 61 is first lowered to form a straight hole 33 in the fabric is Y = ma-mb-cc (see Fig. 16 (b) (1)). ).

Next, the scalpel drop position (see Fig. 16 (b) (2)) for cutting the length of the straight hole 93 back by the length L is calculated as follows.

First, L = ml-cc-lc-mb, and the number N of dropping the cloth cutting blade 61 is N = L / mb. If there is a remainder in L / mb, cut it up to N = N + 1.

Yi = ma-mb-cc-L X i / N is obtained by setting Yi to the scalpel drop position on the i-th (i = 1 to N) scalpel drop for cutting the straight hole 93 behind. .

Then, i = N, that is, cutting of the straight hole 93 at the time when the cloth cutting blade 61 falls N times is completed (see Fig. 16 (b) (3)).

However, Yi is not calculated when N = 0, that is, when it is not necessary to cut and add the straight hole 93 to the back.

In addition, in the above description, in order to simplify the description, an ideal case has been assumed, but in practice, when the buttonhole is cut and formed by multiple falling drops, the groove is not formed between the grooves due to mechanical errors or wrinkles of the set fabric. The cut may occur at the time. For this reason, in order to form a button hole more reliably, it is preferable to form a button hole by calculating a scalpel drop position so that a cut part may overlap more than a predetermined length (for example, about 1 mm) in each knife fall.

In order to calculate such a mes-fall drop number or a mes-fall drop position, for example, when the CPU 54 calculates the mes-fall drop position in step S107 of FIG. 12, the mb is set in the memory switch setting contents of FIG. 10. It is possible to calculate the scalpel drop count by shortening the predetermined length u (for example, 1 mm), and calculating the scalpel drop position by increasing mc to a predetermined length v (for example, 1 mm).

Specifically, about the eyelet cutting in Fig. 16 (a), the scalpel drop position in (2) is calculated as Y = mc + v, and the scalpel drop count is calculated as N = L / (mb-u). About the lying down of FIG. 16 (b), it is set as N = L / (mb-u), and only the number N cut out is computed using mb-u.

According to the cloth cutting control device 50 of the sewing machine shown in this embodiment, since the cut length correction (lc) can be set, the cutting length (ml) and the number of cuts are used by using several scalpels (cloth cutting blade 61). The length ml-lc of the button hole to be formed is set as a separate value. Therefore, after forming a seam, a latch may be formed to tie these two points together to prevent loosening or reinforcement of the sewing start point and the sewing end point. However, for example, the straight part of the eyelet hole 92 may be formed. ) Or the straight hole 93 of the lying eye hole 94 extends to a position to be fitted at both of these points, the straight portion 91 and the straight hole 93 are present. The needle may fall into the part (incision) and the sewing failure may occur. However, by setting the cut length correction (lc), the straight portion 91 and the straight hole 93 are separated from the sewing start point. The sewing failure can be prevented from extending to the position fitted at the sewing end point.

After the eyelet holes 92 are formed from the eyelet scalpel 61a and the straight scalpel 61b, the straight scalpel 61b continues from the straight portion 91 of the eyelet hole 92 to a straight hole ( Since the drive of the sewing machine is controlled to form 93, the straight portion 91 of the eyelet hole 92 can be extended by a predetermined amount, so that the straight line without replacing the cloth cutting blade 61 or the blade receiver 62 can be extended. The eyelet holes 92 having different lengths of the portions 91 can be formed.

Furthermore, since the lying eye selection ss can be set, the linear hole 93 of the lying eye hole 94 can be formed using only the straight scalpel 61b of the scalpel (cloth cutting blade 61). This eliminates the need to replace with a predetermined cloth cutting blade when forming the laid eye hole 94.

In addition, since the eye hole 94 can be formed by cutting several times of the cloth by the straight scalpel 61b, the eye hole 94 lying without replacing the cloth cutting knife 61 or the scalpel 62. The length of the linear hole 93 of can be changed.

Furthermore, since the lying eye offset amount cc can be set, a straight hole 93 can be formed at an arbitrary position of the knitting seam, and since the cut length correction lc can be set, it is a straight hole. The length of 93 can be changed arbitrarily, and the lying eye hole 94 corresponding to various specifications can be formed.

In addition, when the length (ml-lc) of the button hole to be formed is relatively long, as shown in FIG. 17, the straight knife part 65a and the eyelet knife part having a knife length ma substantially equal to the length of the button hole (see FIG. 17). You may use the cloth cutting blade 65 which has a structure with the comparatively long length of the clearance part 65c between 65b), and the meso receiving 66 corresponding to this cloth cutting blade 65. FIG. In this case, only the operation | work which cuts the above-mentioned cut | disconnected part is performed, the operation which cut | disconnects cutting can be skipped, or the number of times of falling of a scalpel can be reduced, and the cycle time which takes a buttonhole formation can be shortened.

In addition, since the height of the feedable scalpel can be set, if the height of the feedable scalpel is set to almost the same height as the thickness of the cloth, the amount of rise of the cloth cutting scalpel 61 becomes the required minimum amount, and the cycle time for forming the buttonhole is reduced. It can be shortened.

In addition, this invention is not limited to a 1st Example, It can change suitably.

For example, the RAM 52 stores pattern data, and the EEPROM 53 stores memory switch data. For example, the RAM 52 stores memory switch data, and the EEPROM 53 stores pattern data. It may be stored, or the RAM 52 or the EEOROM 53 may store both pattern data and memory switch data. Instead of the EEPROM 53, a floppy (registered trademark) disk may be used.

In addition, although the data regarding the length of the button hole is ml-lc, the length of the button hole may be set directly. In this case, the cutting length correction may be set so that the cutting length = (button hole length + cutting length correction).

In addition, although the shangdong of the cloth cutting blade 61 is controlled by controlling the driving of the cloth cutting blade motor 74, it is not limited to this. For example, the cloth cutting blade 61 is used to cut the cloth cutting blade upper switch and the eyelet portion. As long as it is a structure which can be stopped at three positions of a linear cutting part, well-known actuators, such as an air cylinder, may be used.

In addition, by using a so-called scalpel several times as a cloth cutting blade, an actuator capable of individually controlling the movement of the eyelet blade portion and the straight blade portion of the cloth cutting blade is provided so that the eyelet portion 90 and the straight portion 91 are separated. When forming both, an eyelet scalpel part and a straight scalpel part may be simultaneously lowered, and when only the straight part 91 is formed, only the straight scalpel part may be lowered.

In addition, by using a so-called standard blade as a cloth cutting blade, an actuator capable of individually controlling the movement of the eyelet blade portion and the straight blade portion of the cloth cutting blade, both the eyelet portion 90 and the straight portion 91 are provided. It is also possible to simultaneously lower the eyelet scalpel portion and the straight scalpel portion when forming a portion, and to lower only the straight scalpel portion when forming only the straight portion 91.

In addition, as a cloth cutting blade, so-called standard blades in which the eyelet scalpel and the straight scalpel are integrated at the same height are used. At the same time, an actuator capable of individually controlling the movement of each of these parts may be provided, and the driving of the mesial pad may be controlled according to the shape of the button hole to be formed.

In addition, two types of mesocuits, one for forming eyelet holes and the other for laying down eyelets, are arranged, and the two types of meso-holds have a structure that can be arbitrarily selected by, for example, a tarlet method. It is good also as selecting a scalpel according to the shape of the button hole to be formed.

The number of pattern data, the number of data items, the number of memory switches, the operation method of the operation panel 59, and the like can be changed as appropriate. The number of pattern data may be one.

In the above embodiment, a plurality of pattern data are stored, and one of them is selected to create seam data, but a plurality of seam data may be stored in the storage means (RAM 52).

Alternatively, a plurality of pattern data and seam data corresponding to the pattern data may be stored. In that case, select seam data to automatically specify the seam data.

In addition, in this embodiment, although the cloth cutting blade 61 is arrange | positioned at the upper side and it drives down with respect to the mescal receiver 62 arrange | positioned at the lower side, on the contrary, the cut | disconnecting the mesh receiver 62 to the upper side and cutting a cloth The scalpel 61 may be disposed below and the scalpel 62 may be driven down.

The cutting of the cut portion during the cloth cutting knife operation shown in the flowchart of FIG. 15 and the extension (cutting) of the straight portion 91 may be performed first.

(Second embodiment)

Next, FIGS. 18 to 34 show a second embodiment of the present invention. The sewing machine as an example of the present invention is a button knitting sewing machine similar to the sewing machine 10 of the first embodiment, and since the configuration other than the cloth cutting device 201 is completely the same, the same members are given the same reference numerals and description thereof will be omitted. .

Next, the cloth cutting device 201 will be described in detail. This cloth cutting device 201 forms the eyelet button hole 92 and the lying eye hole 94 shown in FIG. 9 at the time of sewing the button. Also in the second embodiment, reference will be made to the reference numerals of the parts of the button holes in Fig. 8 (a) and the buttons of the buttonholes in Fig. 9 (a) (c).

The cloth cutting device 201 has a cloth cutting means consisting of a scalpel unit 100 and a scalpel 160 as shown in FIGS. 18 and 19, with the scalpel 160 facing up and the scalpel unit 100 facing down. Is arranged to.

The scalpel unit 100 is configured by arranging the eyelet scalpel member 101 and the straight scalpel member 102 mainly on the scalpel member 103 as shown in FIGS. 20 and 21.

The eyelet scalpel member 101 is integrally formed with a support plate 101a which is a substantially rectangular flat plate having a main surface in the horizontal direction, and a cylindrical portion 101c which is formed in the support plate 101a and formed into a substantially cylindrical shape, At the upper end of the cylindrical portion 101c, a liquid eyelet scalpel 101b for forming the eyelet portion 90 is formed. The inner side of the cylindrical portion 101c is a cloth waste path 101e penetrating in the vertical direction. In addition, an incision 101d cut at right angles is formed in the olfactory structure of the upper surface of the support plate 101a, and is held by the stopper member 120 described later.

The straight scalpel member 102 is formed integrally from the support plate 102a, which is a substantially rectangular flat plate having a main surface in the horizontal direction, and the thin plate portion 102c which is placed in the support plate 102a, and the thin plate portion 102c. At the upper end of the), the straight portion 91 of the eyelet button hole 92 and the straight scalpel 102b for forming the lying eye hole 94 are formed. A cloth cutting blade is formed by the eyelet blade 101b and the straight blade 102b, and the cloth cutting blade is laid down by a straight portion 91 formed by the straight blade 102b as shown in FIG. It is arrange | positioned so that the direction of the eye hole 94 may be front-back direction.

Scalpel base member 103 is a member that supports the entire scalpel unit 100 by the base plate 103a formed in a substantially rectangular shape in the arcuate shape as seen from the top as shown in FIG.

The scalpel base member 103 is fixed to the bed portion 200b by fixing screws 152 and 152.

In addition, the guide plate 150 fixed by the screw 151 to the base plate 103a follows a groove (not shown) formed in the bed portion 200b. 20, the up and down direction on the ground), and the left and right position can be fixed by the fixing screws (152, 152) in a properly adjusted state.

In front of the scalpel base member 103, a scalpel support member 103b for supporting the eyelet scalpel member 101 and the straight scalpel member 102 is integrally formed to stand up on the base plate 103a. An upper portion of the scalpel support 103b becomes a rectangular block body 103c, and a concave surface (not shown) is formed on an upper surface of the block 103c, and the concave surface of the straight scalpel member 102 is formed. The support plate 102a is fitted.

In addition, one side edge of the support plate 102a is pushed by the straight blade fixing clamp 105b from above, and the straight blade fixing clamp 105b is provided on the side of the block body 103c by the straight blade fixing screw 106b. It is fixed. Thereby, the straight scalpel member 102 is securely fixed to the block body 103c, that is, the scalpel base member 103.

Adjustment screws 115a and 115b are embedded in the center of the block 103c as shown by the broken line M2 in FIG. 21. By adjusting the degree of screwing of the adjusting screws 115a and 115b, the head of the adjusting screw 115a is properly projected to the base of the eyelet scalpel 104, and the eyelet scalpel in a standing state (state of FIG. 21). The front position of the base 104 is determined.

Moreover, a rectangular parallelepiped recess 103d (FIG. 21) is formed inside the scalpel support 103b, and the eyelet scalpel base 104 is fitted into the recess 103d. A concave surface (not shown) is formed on the upper surface of the eyelet scalpel base 104, and the support plate 101a of the eyelet scalpel member 101 is fitted therein. A point shaft 107 is attached to penetrate the lower portion of the scalpel support 103b and the eyelet scalpel base 104, and the eyelet scalpel base 104 is centered on the point shaft 107 with respect to the scalpel support 103b. It becomes rotatable.

In addition, one side edge of the support plate 101a is pressed by the eyelet scalpel fixing clamp 105a from above, and the eyelet scalpel fixing clamp 105a is fixed to the eyelet scalpel base 104 by the eyelet scalpel fixing screw 106a. . Thereby, the eyelet scalpel member 101 is securely fixed to the eyelet scalpel base 104.

On the side opposite to the eyelet scalpel fixing clamp 105a of the eyelet scalpel base 104, a stopper member 120 for positioning the eyelet scalpel member 101 is attached by a screw 121. A horizontal hole (not shown) is formed in the stopper member 120, and the front and rear positions of the stopper member 120 can be moved by sliding the horizontal hole with respect to the screw 121. As shown in FIG. On the upper surface of the stopper member 120, an elongated portion 120a extending to the upper surface of the eyelet scalpel base 104 is formed. In the state where the stopper member 120 is properly slid to adjust the position, it is fixed to the eyelet scalpel base 104 with the screw 121, and then the cutout 101d of the eyelet scalpel member 101 is brought into contact with the elongated portion 120a. The eyelet scalpel member 101 is positioned, and fixed to the eyelet scalpel fixing clamp 105a or the like as described above.

A spring 108 is fitted to the point shaft 107, and both ends of the spring 108 are pushed against the base pin 109 and the base plate 103a fixed to the eyelet scalpel base 104, respectively. Contact with each other. Accordingly, the eyelet scalpel base 104 is urged counterclockwise in FIG. 21 by the spring 108.

On the other hand, a double-acting air cylinder 110 is disposed behind the meso stand member 103. The air cylinder 110 is fixed to the cylinder attachment plate 111 attached to the base plate 103a by a stop screw 113 and 113 so that the front and rear positions thereof can be adjusted by the cylinder screws 112 and 112. do. The cylinder pin 114 is embedded in the tip of the rod 110a of the air cylinder 110. The tip of the cylinder pin 114 is in contact with the base of the eyelet scalpel 104.

The link hole 114a which penetrates in the horizontal direction is formed in the cylinder pin 114, and the link 116 passes through this link hole 114a. The link 116 is formed in a substantially C shape as shown in FIG. 20. Both ends of the link 116 are formed in a U-shape as shown in FIG. 21, and are hung by link pins 117 and 117 fixed to the eyelet scalpel base 104, respectively. The link 116 is free to slide with respect to the cylinder pin 114 and the link pins 117 and 117. In addition, an E-link 118 is attached to the end of each of the link pins 117 and 117, and the slide movement of the link 116 is restricted so that the link 116 is not released from the link pins 117 and 117.

The rod 110a protrudes when the air cylinder 110 is off, and the cylinder pin 114 pushes the base of the eyelet scalpel clockwise in a clockwise direction, and this force is applied to the bias force of the spring 108. Larger, the eyelet scalpel base 104 maintains a standing state as shown in FIG.

When the air cylinder 110 is turned on, the rod 110a enters, and the base of the eyelet scalpel 104 is tensioned through the link pins 117 and 117 by the link 116 and at the same time the portion of the spring 108 By the force, the point shaft 107 is rotated counterclockwise with respect to the axis and falls down (see Fig. 22 (b)).

That is, the air cylinder 110 and the spring 108 are the moving means of the present invention.

The driving source for operating the eyelet scalpel 104 is not limited to a double-acting cylinder such as the air cylinder 110, but may be a different type of cylinder, or an actuator such as a solenoid or a motor may be used.

The inside of the eyelet scalpel base 104 is formed such that the cloth waste path 104a is inclined backward so as to be continuous to the bottom of the cloth waste path 101e of the eyelet scalpel member 101.

The rear end of the cloth waste path 104a becomes an opening, and the cloth waste generated by cutting the cloth by the eyelet scalpel 101b is allowed to fall from the opening via the cloth waste paths 101e and 104a.

A hole (not shown) is also formed in the base plate 103a of the meso stand member 103, and a cylindrical boss 131 is press-fitted into this hole. The cloth waste dropped from the opening falls into the boss hole 131a formed in the boss 131 or falls near the upper edge thereof.

In this way, the path from which the cloth waste is discharged is cut off at the opening of the cloth waste path 104a and continues to the boss 131 side.

In addition, on the upper surface of the base plate 103a, the cloth waste 122 stops so as to surround the rear of the boss hole 131a so that the cloth waste discharged from the opening of the cloth waste path 104a is not scattered. 123 is fixed.

A tip of the pipe 133 is attached to the boss 131a so as to communicate with the boss hole 131a. The other end of the pipe 133 is connected inside the aspirator 134. The pipe 133 is fixed by the stop screw 132 with respect to the boss 131 and by the stop screw 135 with respect to the aspirator 134.

The suction 134 is installed inside the bed 200b as shown in FIG. 18. As shown in FIG. 21, the detent 142 is fixed to the aspirator 134, and the air tube 140 is fixed to the aspirator 134 by the detent 142. The air tube 140 is to supply air to the suction unit 134 from an air supply source (not shown),

The tip is connected to the air pipe 136 inside the suction 134 via the joint 141. The end portion of the air pipe 136 on the side of the joint 141 is split, and the air supplied through the air tube 140 and the joint 141 is pressurized to be supplied in the direction of arrow A into the air pipe 136. have. The connection pipe 137 which is protruded to the outside is connected to the front end of the air pipe 136, and the hose 138 is connected to the front end of the connection pipe 137 by an annular band 139. The pipe 133 is connected to the air pipe 136 in the suction 134.

Air is supplied from the air tube 140, and wind in the direction of arrow A causes wind in the direction of arrow B into the pipe 133 by the negative pressure generated at that time. The cloth waste is aspirated by the flow of air and is drawn out of the sewing machine 200 by the hose 138.

21, most of the pipe 133, the connecting pipe 137, and the hose 138 are shown in cross section, and the suction structure 134 is schematically shown in an internal structure.

The planar scalpel 160 is fixed to the scalpel mounting base 162 as shown in FIG. 22, and the eyelet scalpel portion 160b and the straight scalpel 102b that coincide with the eyelet scalpel 101b on the bottom surface thereof are formed flat. The matching linear scalpel receiving portion 160c is formed. Cutting the object to be cut while pressing the cloth between the flat scalpel 160, the eyelet scalpel (101b) and the straight scalpel (102b) to form a buttonhole.

The scalpel mount 162 is fixed to the lower end of the direct drive shaft 40 of the scalpel drive means (cloth cutting drive means) 170 having the same configuration as the scalpel drive means 20 of the first embodiment. Accordingly, the mass receiver 160 is driven up and down at a predetermined timing by the mass receiver driving means 170.

A horizontal air hole 165 through which air passes in the transverse direction is formed inside the mass receiving attachment stand 162. One end of the horizontal air hole 165 is blocked by a cap 164, and a joint 163 is attached to the other end, and an air line 175 (FIG. 19) is connected to the joint 163. The vertical air hole 166 is formed downward from the substantially center of the horizontal air hole 165, and the vertical air hole 166 is connected to the vertical hole 160a formed in the planar scalpel 160. The vertical hole 160a is located directly above the eyelet scalpel 101b. Therefore, when air is supplied from the air line 175 through the joint 163, the air is ejected from the vertical hole 160a of the planar scalpel 160.

The cloth waste cut by the planar scalpel 160 and the eyelet scalpel 101b is caused to fall into the cloth waste path 101e in the eyelet scalpel member 101 by air emitted from the vertical hole 160a.

However, a gap w2 exists between the eyelet scalpel 101b on the eyelet scalpel base 104 in the standing state and the straight scalpel 102b as shown in Figs. 21 and 22 (a). The length of the gap w2 is set to be shorter than the length w1 where the planar scalpel 160 and the straight scalpel 102b coincide. It is especially preferable that w1-w2 = 2 mm or less. By setting in this manner, the first cut is made when the eyelet button hole is formed between the eyelet scalpel 101b, the straight scalpel 102b and the planar scalpel 160, and then the straight scalpel when the cut portion corresponding to the gap w2 is cut. The cutting blade 102b and the planar scalpel 160 can be cut in one operation, and the cutting end can be cut reliably by slightly overlapping with the first cutting end.

In this case, the length of the gap w2 corresponds to the length mc of the first embodiment, and the length w1 of the plane scalpel 160 and the straight blade 102b corresponds to the length mb of the straight blade portion 61b. Next, the gap w2 will be described as "mc" and the length w1 as "mb".

In addition, in the cloth cutting device 201 of the present embodiment, instead of the flat scalpel 160, a step scalpel 167 may be attached as shown in FIG. 23. The underside of the stepped scalpel 167 protrudes downward by a step 167a from the straight scalpel receiving portion 169 and the straight scalpel receiving portion 169, and the eyelet scalpel 101b and It is composed of the matching eyelet receiving portion 168. The step 167a is formed to have a predetermined height, for example, a height of 2 to 3 mm so that the straight scalpel 102b does not touch the straight scalpel portion 169 when the eyelet scalpel 101b and the eyelet scalpel portion 168 coincide with each other. do. The stepped scalpel 167 has a vertical hole 167b similarly to the flat scalpel 160.

When using the step scalpel receiving 167, only the eyelet part 90 can be formed. Details of the operation will be described later.

In addition, the cloth cutting device 201 can also attach a standard scalpel or a standard scalpel dedicated to the lying eyehole, which is formed in a continuous unit, without dividing the eyelet scalpel and the straight scalpel as in the first embodiment.

The cloth cutting device 201 having the above-described configuration forms a predetermined hole in the cloth by cooperating with the transfer table 14 which is the relative moving means of the present invention which sends the cloth in the front-rear direction. Next, the cloth cutting device 201 and the fourth mechanical operation will be described with reference to FIGS. 20 to 26. Fig. 24 to Fig. 26 each show the shape of forming a buttonhole by following a step, in which gray is a part cut at that step, an oblique part is a part cut at the previous step, and P is a yarn around the button hole. Indicates a knit seam.

(1) A case in which the eyelet buttonhole 92 is formed after attaching the planar scalpel 160 and sewing the knitting seam is described.

First, after forming the sewing thread P, the upper thread is cut by a mechanism (not shown), and the cloth (sewn material) is conveyed to the predetermined cloth cutting position on the mass unit 100 by the transfer table 14. At this time, the cloth cutting device 201, as shown in Fig. 22 (a), the air cylinder 110 is in the off state, the rod 110a protrudes, and the base of the eyelet scalpel 104 is pushed up by the cylinder pin 114, standing up. It is a state. The eyelet scalpel 101b is in a first position capable of cutting the object to be cut.

The planar scalpel 160 is lowered by a predetermined amount by the driving of the scalpel drive means 170. When the planar scalpel 160 descends to a position close to the eyelet scalpel 101b and the straight scalpel 102b, air is supplied through the joint 163 of the scalpel mount 162, and then horizontally. Air is injected from the vertical hole 160a toward the cloth waste path 101e of the eyelet scalpel member 101 via the air hole 165 and the vertical air hole 166. The injection of air from above is continued until the planar scalpel 160 is raised and sufficiently separated from the eyelet scalpel 101b after the cutting of the eyelet portion 90.

The planar scalpel 160 continues to descend, and at the end coincides with the eyelet scalpel 101b and the straight scalpel 102b, and the to-be-sewn object has the eyelet portion 90 as shown in gray in Fig. 24 (a), The first groove h1 that is part of the straight portion 91 is formed. Between the eyelet part 90 and the 1st groove h1, the cut part S corresponding to the clearance length mc mentioned above exists.

If liquid cloth waste is generated between the eyelet scalpel 101b and the flat scalpel 160 during this cutting, the cloth waste is pushed downward by the air emitted from the top, and the cloth waste paths 101e and 104a are moved. It is discharged | emitted from the eyelet mes base 104, and falls to the boss hole 131a of the boss 131, or its periphery, without flying by the cloth waste 122.

On the other hand, air is also supplied from the joint 141 in the aspirator 134. Accordingly, the cloth waste is sucked into the boss hole 131a due to the negative pressure generated in the air pipe 136, and enters into the aspirator 134. 137, the boss 138 is recovered from the outside of the sewing machine 200. The timing of the air supplied from the joint 141 is not particularly limited and may be in between the start of supply of air from the upper part through the joint 163 and the completion of all operations of cutting the cloth. It is preferred that it is substantially simultaneous with the supply of air from 163. At this timing, the air and suction strength from the upper side are combined to reliably discharge the cloth waste, and the solenoid valve for supplying air to the joint 163 and the joint 141 can also be shared. Both configuration and control are simple.

Next, the mass receiving drive unit 170 operates in the reverse direction, and the planar receiving body 160 rises and stops to a height that does not interfere with the movement of the cloth. At this time, the air cylinder 110 is turned on, and the rod 110a is drawn in. Accordingly, the base of the eyelet scalpel 104 is tensioned by the link 116 passing through the cylinder pin 114, and the base of the eyelet scalpel 104 is moved by the force of the spring 108 to the point shaft 107. It rotates so that it may fall counterclockwise toward a center, it will retract and it will be in the state like FIG.22 (b). At this time, the eyelet scalpel 101b is in a second position that does not coincide with the planar scalpel 160.

However, the structure configured to pull the eyelet scalpel base 104 by the cylinder pin 114 through the link 116 without relying solely on the biasing force of the spring 108 is for the following reason. On the eyelet scalpel 101b, the cloth which is the to-be-encapsulated object may be in close contact with each other, and only the spring 108 makes it difficult for the base of the eyelet scalpel 104 to fall down in relation to the frictional force between the fabric. Therefore, it was configured to pull the cylinder pin 114 so that the eyelet scalpel foundation 104 can be retracted.

After the rod 110a of the air cylinder 110 is drawn in, the feed table 14 is operated to move the cloth to the next cutting position. Since the planar scalpel 160 descends by the scalpel drive means 170 and the eyelet scalpel 101b is evacuated, only the straight scalpel 102b matches, and the gray scalpel 102b is grayed out in FIG. 24 (b). Two grooves h2 are formed. The eyelet part 90 and the straight part 91 are connected by this cutting | disconnection.

If the length of cut does not reach the length (ml) -cut length correction (lc), the planar scalpel 160 again rises to a position that does not interfere with the movement of the cloth, and is transferred by the transition feeder 14. Moving to a predetermined position, the planar scalpel 160 is lowered to coincide with the straight scalpel 102b and the third groove h3 is formed as shown in FIG. Thereby, the eyelet button hole 92 which consists of the eyelet part 90 and the straight part 91 is obtained. In this example, the cutting was finished in three operations, but the number of times may be as many as two or more times when forming the eyelet buttonhole as an example.

In addition, since cloth waste does not occur at the time of cutting after the 2nd time, supply of air to the joint parts 163 and 141 is not necessary.

After completion of the above cutting operation, the processes such as the lower thread cutting are terminated.

In addition, the cloth movement by the feed table 14 before the 2nd and 3rd cutting cuts a position so that it may overlap with the groove cut | disconnected previously. The specific overlapping degree depends on the value of the length mb and the gap length mc, but is 1 mm or more away from the apex of the eyelet part 90 and also overlaps with the eyelet part 90 and the first groove h1 (about 1 mm). The 2nd cut | disconnection is performed so that it may become. It is preferable to cut | disconnect so that 1 mm or more may overlap with the 2nd groove | channel h2 cut | disconnected at the 2nd time also at the time of 3rd cutting | disconnection.

In other words, the amount of movement of the feed table 14 during the cloth cutting operation is set to the scalpel no. Calculated by "the length which can be cut | disconnected at the 1st time (part of the straight part 91 at the apex of the eyelet part 90)", the thread cutting length mb by the straight blade 102b, and the "cut length" which are understood from the back To be controlled. Details of the control will be described later.

(2) A case where the sewing sewing P is sewn around the eyelet buttonhole is described.

First, the cloth is conveyed to the predetermined cutting position by the feed table 14, and then the fabric is cut in the same manner as in (1), and then the conveying table 14 is conveyed to the sewing position by the feed stand 14, and then processing such as thread cutting is performed. All.

Next, (3) the case where the eyelet 94 lying in the planar scalpel 160 is formed, and the case where the stepped support 167 is used in (4) will be described. As for the sewing of the knitting, as shown in (1) and (2) above, the temporal longitudinal relationship between the sewing of the sewing and the cutting of the cloth does not directly relate to the operation of the cloth cutting device 200 itself. Only the operation of the cutting device 200 will be described.

(3) The case where the lying eye hole 94 is formed is demonstrated.

First, the air cylinder 110 is turned on, the rod 110a is retracted, the foundation for the eyelet scalpel 104 is tensioned, and at the same time, the foundation for the eyelet scalpel 104 is evacuated by the force of the spring 108. It will be in the state shown in FIG.22 (b). In this state, the conveyance table 14 conveys the fabric to a predetermined fabric cutting position.

Since the scalpel drive means 170 is operated, the planar scalpel 160 is lowered by a predetermined amount, and the eyelet scalpel 101b is evacuated, only the straight scalpel 102b is matched, and grayed out in FIG. 25 (a). The first groove h4 shown is formed.

If the cutting amount does not reach the required length, the plane scalpel 160 rises to the extent that it does not interfere with the movement of the cloth as in the second operation of (1). The second cut (h5) is formed by lowering the 160 and cutting the second time as shown in FIG. 25 (b). Similarly, when the third cut is made, the third groove h6 is cut as shown in FIG. 25C to form a lying hole 94.

In the case of the lying eyehole 94, the cutting position and the cutting length can be arbitrarily changed with respect to the sewing sewing length by changing the numerical values of "the lying eye offset amount cc" and the "cut length correction lc."

In the case of the lying eye hole 94, the eyelet scalpel base 104 is evacuated at the beginning of the cutting operation and cut only by the straight scalpel 102b. Since no cloth waste occurs, air is not supplied to the joints 163 and 164.

In addition, the movement amount of the conveyance table 14 before the 2nd and 3rd cutting is adjusted so that it may overlap 1 mm or more with the groove cut | disconnected previously similarly to the formation of the eyelet button hole 92. FIG.

As described in the above (1) to (3), the eyelet button hole 92 and the lying eye hole 94 can be freely changed or the cut length can be changed without replacing the scalpel or the female support.

(4) Next, the case where the step difference receiving tray 167 is attached to the receiving tray 162 will be described.

In the case of forming a hole such as an eyelet button hole 92 or a flower hole in the step receiving tray 167, the cloth cutting device 201 first loads the air cylinder 110 when the air cylinder 110 is turned off as shown in FIG. 110a) protrudes, and the base of the eyelet scalpel 104 is pushed up by the cylinder pin 114 to stand.

The stepped meso receiving 167 is lowered by a predetermined amount by the driving of the meso receiving driving means 170. Since the step 167a is disposed in the stepped scalpel 167, only the eyelet scalar 101b is aligned, and only the eyelet part 90 is formed as shown in gray in FIG. When only a hole, such as a flower hole, is formed, the step difference receiving tray 167 is raised to its original position to end the operation.

In the case of the eyelet button hole 92, the air cylinder 110 is turned on afterwards, and the base of the eyelet scalpel 104 is retracted to be in the state shown in Fig. 23B. On the other hand, the step of raising the step receiving tray 167 to a height that does not interfere with the movement of the cloth, and moves the cloth to the feed table 14 to repeat the operation of lowering the step receiving tray 167 by the required length, it is repeated (Fig. As shown by the gray of b)-(d), the 1st groove h7, the 2nd groove h8, and the 3rd groove h9 are cut out in order, and the eyelet button hole 92 is formed. In addition, the movement of the cloth by the conveyance table 14 before the 2nd, 3rd, and 4th cutting is moved so that it may overlap with the cutting part formed before each, for example, 1 mm or more.

Similarly to the above (1), when the step meso tray 167 descends to a position close to the eyelet scalpel 101b during the first cutting, the air passes through the joint portion 163 of the meso tray mounting table 162. Starts to be supplied, and air is injected from the bottom of the stepped scaffold 167 toward the cloth waste path 101e of the eyelet scalpel member 101. Accordingly, air is also supplied to the joint 141 on the suction side 134 side. The supply of this air is continued until the stepped scalpel 167 rises and is sufficiently separated from the eyelet scalpel 101b after the cutting of the eyelet portion 90.

The case where the lying eyelet 94 is formed by using the stepped scalpel 167 is the same as in (2) above.

In this way, by using the step difference receiving plate 167, only the eyelet portion 90, the eyelet button hole 92 and the lying eye hole 94 can be formed, and the length of both button holes can be freely changed.

Next, the control device 180 disposed on the sewing machine 200 will be described based on FIG. 27. Since the control device 180 is almost the same as the control device 50 of the first embodiment, the same components will be denoted by the same reference numerals, and the description thereof will be omitted. Only differences from the first embodiment will be described below.

In the controller 180, an air cylinder driving solenoid valve 76 for driving the air cylinder 110 through the interface 55 is connected to the CPU 54, which is a control means. The CPU 54 drives the air cylinder drive solenoid valve 76a at a predetermined timing through the interface 55 to overturn or stand the base of the eyelet scalpel 104.

In addition, the control unit 180 turns on / off the air compressor 77b for supplying air to the air tube 140 or the air line 175 through the interface 55 and the air compressor driving solenoid valve 77a. The operation is controlled.

As in the first embodiment, the RAM 52 stores a plurality of pattern data, and also stores one data selected through the operation panel 59 in these data, and also stores a change value of the data value after the selection.

The data items of the pattern data are almost the same as in Fig. 7, but only slightly different from the data items 10.

Data item 10, which is a hole type selection data of the present invention, selects four types of sewing of the following ① to ④ for the object to be sewn when one of the planar mesmer 160 or the step mesmeral 167 is used as a mesmer. will be.

① Formation of the eyelet button hole 92 by the planar scalpel 160 (the following ① formation of the "flat scalpel and eyelet button hole").

(2) Formation of the lying eyelet 94 by the planar scalpel 160 or step scalpel 167 (the following ② "lying eyehole" formation).

(3) Formation of eyelet button hole 92 by step scalpel 167 (next, formation of "step scalpel and eyelet button hole").

(4) Only one eyelet portion 90 is formed by the step difference receiving means 167 (next, ④ only the step difference receiving portion and the eyelet button hole formation) are selected.

In accordance with this, "ss" as the data item name becomes "lean eye / eyelet selection" instead of "low eye selection" and corresponds to selection data for selecting which one of the above 1) to 4) is to be formed. Specifically, ① Set "0" when selecting the "Flat face receiving eyelet button hole", ② Set "1" when selecting "Looping eye hole", and ③ Set "Step gap receiving eyelet button hole." ", You can set the desired seam by setting" 3 ".

In addition, the setting contents of the memory switch are almost the same as in FIG. About 36, it becomes "the ball feedable meso height".

In addition, the scalpel No. actually attached as in the first embodiment. The scalpel number is selected in data item 1 accordingly. Also in this embodiment, the scalpel No. The above-mentioned standard scalpel is set at 0 to 5, and in order to form several scalpels, namely, eyelet buttonholes, composed of the scalpel member 101 and the straight scalpel member 102 at scalpels Nos. A scalpel that needs to be driven more than once is set.

Next, a flow chart will be used to explain the flow of forming a button knitting seam. The general flow (FIG. 12), the memory switch setting process (FIG. 13), and the data setting process (FIG. 14) in the first embodiment are the same in the second embodiment.

The flow of the characteristic cloth cutting knife operation in this embodiment will be described using the flowchart of FIG. As a premise, the operator attaches an appropriate scalpel and a receiving device according to the hole to be formed, and sets predetermined data from the operation panel 59 accordingly.

First, in step S500, for example, a blade number set in the data item "1" in the pattern data. It is determined whether a scalpel has been selected several times. If the standard scalpel and the flat scalpel 160 are attached, the scalpel is No instead of a plurality of scalpels. In step S518, the flat scalpel 16 is lowered to form a buttonhole in the cloth. At this time, the scalpel No. If 0, i.e., a scalpel having only a straight blade for forming the lie down eye hole 94 is selected, the lie down eye is formed in step S518. When 1 to 5 are selected, eyelet button holes are formed.

In the case where it is determined that the scalpel is several times in step S500, it is determined in step S501 whether the setting of the data item "10" in the pattern data is ss = 1, that is, whether the lying eye hole is selected. If the lying eye hole is not selected, that is, if ss = 0, 2, 3 is selected, the process proceeds to step S502.

In step S502, the planar scalpel 160 or the step scalpel 167 is lowered to a predetermined cutting position. The to-be-sealed object includes an eyelet portion 90 and a straight portion 91 according to the shape and size of the eyelet scalpel 101b of the eyelet scalpel member and the straight scalpel 102b of the straight scalpel member 102 if the flat scalpel support 160 is used. Is formed. If it is the step receiving tray 167, only the eyelet portion 90 is formed.

In step S503, the air compressor 77b is turned on for about 50 m seconds and then turned off.

In step S504, it is determined whether or not the setting of the data item "10" in the pattern data is ss = 3, that is, whether only the eyelet unit 90 has been selected. If only the eyelet portion 90 is selected (Yes), the cloth cutting operation is terminated, and therefore, the flow advances to step S513.

When the setting of the data item 10 is any one of ss = 0, 2, that is, when the eyelet button hole 92 by the planar mass receiver 160 or the stepped mesh receiver 167 is selected, the process proceeds from step S504 to step S505. do.

In accordance with the "ball feedable height" set in the memory switch No. 36 in step S505, the flat blade support 160 (step difference receiving tray 167) is raised to a height where the movement of the feed table 14 is not affected. .

Next, by turning on the air cylinder 110 at step S506, the eyelet scalpel member 101 falls as shown in Fig. 22 (b) or Fig. 23 (b), and the process proceeds to step S507. Thereafter, only the cloth cutting by the straight scalpel 102b is possible.

In step S507, the conveyance stand 14 is moved to the 2nd cloth cutting position computed by the said step S107 corresponding to clearance gap w1 (FIG. 22 (a)). At this time, the amount of movement is controlled so that the mass receiver descends to a position slightly overlapping the cross section cut once as described above. Specifically, the planar scalpel 160 is a position for cutting the cut portion corresponding to the gap w2, and the step scalpel 167 is a tip portion of the straight portion 91 connected to the eyelet part 90. The position to cut.

Subsequently, in step S508, the planar scalpel 160 or the step scalpel 167 is lowered to the cutting position to cut the fabric, and the flow proceeds to step S509.

On the other hand, when it is determined in step S501 that the lying eyelet is selected as ie, ss = 1, the process proceeds to step S515. In step S515, the air cylinder 110 is turned on and the eyelet scalpel member 101 falls. After this, only the cutting by the straight scalpel member 102 is possible.

Next, in step S516, the transfer table 14 is moved to the first mesmeral falling position (cloth cutting position) calculated in the step S107. In step S517, the planar scalpel 160 or the step scalpel 167 is lowered to the cutting position, and a straight hole corresponding to the shape of the straight scalpel 102b and the matching length with the scalpel is inserted into the workpiece. The process then proceeds to Step S509.

In step S509, it is determined whether or not the mass drop falling operation equal to the number of falling drops calculated in the step S107 has been performed. If No, the flow advances to step S510, and the plane scalpel 160 reaches the ball feed height in the same manner as in the step S505. Alternatively, the step scalpel 167 is raised. Subsequently, in step S511, the transfer table 14 is moved to the next dropping position (cloth cutting position) calculated in the step S107.

In step S512, the measuring bowl is lowered to the cutting position, the predetermined length is cut and returned to step S509, and it is again determined whether the measuring drop falling operation equal to the number of falling drops calculated in the step S107 has been performed. In other words, when the formation of the button hole is completed, the process proceeds to step S513. Here, the planar scalpel 160 or the step scalpel 167 is raised to the original home position (the highest position), and then the air cylinder 110 is turned off in step S514, and the scalpel scalpel member 101 stands up. The cutting blade operation process ends.

In addition, in the case where the step S514 is reached via the step S504 or the step S518, the air cylinder 110 is in the off state, but even if the off command is output in the off state, nothing occurs.

However, the lowering position in the cut for forming the eyelet button hole 92 or the eyelet portion 90 in step S502 or step S518, and the other lowering position are controlled to lower to the lower position. This is because the area where the sides merge when forming the eyelets needs to push the mass receiver with a stronger force.

As described above, in steps S507, S511, and S516, by moving the conveyance table 14 by a predetermined amount, the position (mesh receiving position) of the cloth cutting device 201 with respect to the conveyance table 14 is changed relatively to a predetermined length. I form a buttonhole of the. This dropping position of the scalpel is calculated as follows, for example. Next, the calculation method of the mescorpion dropping position is demonstrated based on FIG. 29 (a) is a diagram for explaining the case where ss = 0, (b) ss = 1, (c) ss = 2, and (d) ss = 3. In addition, the situation of the cloth cutting device 201 at the time of the cutting | disconnection in each position shown in FIG. 29 is shown typically in FIG.

For ease of understanding, it is assumed that the eyelet portion 90 is formed at a predetermined position on the cloth by lowering the mesial receiver while the feed table 14 is at the origin position.

In addition, as shown in Fig. 29 (a), the rear end portion of the mating area between the planar scalpel 160 (step scalpel 167) and the straight scalpel 102b was defined as the falling edge of the scalpel, and was shown using the Y coordinate. In addition, in Fig. 29 (a), the dropping position of the mesh receiver in the state of cutting the cloth for the first time is set as the origin (Y = 0) in the Y direction, and (b) to (d) are aligned with (a) and the same position as (a). Is set to Y = 0.

First, the case where the eyelet button hole 92 is formed in the cloth using the planar scalpel 160 using FIG. 29 (a) will be described.

When the flat scalpel 160 is first lowered to form part of the eyelet portion 90 and the straight portion 91 on the fabric, the dropping position of the scalpel becomes a predetermined position as Y = 0 as described above (Fig. 29). (1) of (a)). At this time, the relationship between the planar scalpel 160, the eyelet scalpel member 101, and the straight scalpel member 102 is shown in FIG.

Next, since the length of the cut portion is mc, the cut-off position for cutting the cut portion corresponding to w2 is Y = mc as shown in (2) of FIG. 29 (a).

Next, the mass receiving drop position (see Fig. 29 (a) (3)) for cutting the length of the straight portion 91 back by the length L (cut length) is calculated as follows.

First, L = ml-lc-ma, and the number N of dropping the planar mass receiver 160 is represented by N = L / mb. If there is a remainder in L / mb, cut it up and make N = N + 1.

Yi is -L X i / N when the mass drop position of the mass drop on the i-th drop (i = 1 to N) for cutting the straight portion 91 back is set to Yi. Then, i = N, i.e., Yi = -L at the time of dropping the scalpel N times, and the cutting of the straight portion 91 is completed (see Fig. 29 (a) (4)).

However, in the case of N = O, that is, when it is not necessary to cut and add the straight part 91 to the back side, the mass receiving drop position after cutting the cut part is not calculated.

When (2)-(4) of FIG. 29 (a), the eyelet scalpel member 101 is in the collapsed state shown in FIG. 30 (b), and the flat scalpel 160 and the straight scalpel member 102 are shown. Only matches.

Next, the case where the eye hole 94 lying in the cloth is formed using FIG. 29 (b) will be described. When the lying eye hole 94 is formed, any one of the planar scalpel 16 and the step scalpel 167 may be used as the scalpel, and the scalpel scalpel 101 for the eyelet may fall, and FIG. 30 (b) ( As shown in d), the scalpel is in a state of coinciding only with the straight scalpel member 102.

At the time of forming the lying eye hole 94, the dropping position of the measuring bowl when the flat measuring tray 160 (step difference receiving tray 167) is lowered becomes Y = ma-mb-cc (Fig. 29 (b). (1)).

Next, the mesial drop position (see Fig. 29 (b) (2)) for cutting the length of the straight hole 93 back by the length L is calculated as follows.

First, L = ml-cc-lc-mb, and the number N of dropping the planar mass receiver 160 (step difference receiver 167) becomes N = L / mb. If the rest occurs in L / m, it is cut out and made into N = N + 1.

Yi = ma-mb-cc-L X i / N when the mass drop position of the mesial drop on the i th time (i = 1 to N) for cutting the straight hole 93 on the rear side is set to Yi. Becomes

Then, i = N, that is, the cutting of the straight hole 93 is completed at the time when the planar scalpel 160 falls N times (see Fig. 29 (b) (3)).

However, when N = 0, i.e., when it is not necessary to cut out the straight hole 93 behind, Yi is not calculated.

Next, the case where the eyelet button hole 92 is formed using the step difference receiving 167 using Fig. 29 (c) will be described.

First, when the step receiving drop 167 is first lowered to form the eyelet portion 90 in the cloth, the eyelet portion 90 is formed at a predetermined position of the cloth as described above. = O At this time, as shown in FIG. 30 (c), the step scalpel 167 matches only the eyelet scalpel member 101, and does not coincide with the straight scalpel member 102, and only the eyelet part 90 is formed.

Next, the mass receiving drop position (refer to Fig. 29 (c) (2) to (4)) for cutting the length of the straight portion 91 back by the length L is calculated as follows. Between (2) and (4) of FIG. 29 (c), the eyelet scalpel member 101 falls as shown in FIG. 30 (d), and the step scalpel receiving 167 coincides only with the straight scalpel member 102.

First of all, the first cut-off position of the straight portion 91 has a cut length of mc, so that Y = mc (see Fig. 29 (C) (2)).

Next, the mass receiving drop position (3 in Fig. 29 (c)) for cutting the length of the straight portion 91 back by the length L is calculated as follows. That is, L = ml-lc-ma + mc, and the number N of dropping the mass receiver is represented by N = L / mb. If there is a remainder in L / mb, cut it up to N = N + 1.

When the mass return position of the i-th time (i = 1 to N) for cutting the straight portion 91 back is set to Yi, Yi = mc-L X i / N. Then, i = N, i.e., Yi = -L + mc = ml-lc-ma at the point of falling through the mass receiver, and the cutting of the straight portion 91 is completed (Fig. 29 (c) (4)).

In addition, in the above description, an explanation has been made assuming an ideal case in order to simplify the description as in the first embodiment, but in reality, like the first embodiment, a memory switch is used to prevent the cut between the groove and the groove. With respect to the set value set in the setting contents, mb is shortened by a predetermined length u (e.g. 1mm) to calculate the number of droppings of the measuring arm, and mc is lengthened by a predetermined length v (e.g. The button hole is formed so that the groove | channel at the time of a fall of meeting scalpel overlaps a predetermined amount.

Specifically, in the case of the eyelet cutting in Fig. 29 (a), the dropping position of the measuring bowl in (2) is calculated as Y = mc + v, and the measuring bowl falling frequency N is N = L / (mb-u. Calculate as In the case of lying down in Fig. 29 (b), the number N cut out as N = L / (mb-u) is calculated using mb-u.

In the case of eyelet cutting in Fig. 29 (c), the mesvet drop position in (2) is calculated as Y = mc + v, and after (3), the mesvat drop number N and the i-th mass drop position are (Yi) is calculated as N = L / (mb-u), L = ml-lc-ma + mc + v and Y = i + mc + vL X i / N.

Next, the case where only the eyelet part 90 is formed based on FIG. 29 (d) is demonstrated. At this time, as shown in FIG. 30 (c), the stepped scalpel 167 coincides only with the eyelet scalpel member 101, and does not coincide with the straight scalpel member 102.

In this case, in order to form the eyelet portion 90 in the cloth, the eyelet portion 90 is formed at a predetermined position on the cloth as described above in the state where the stepped scalpel 167 is first lowered to form the eyelet portion 90. Becomes Y = 0 ((1) in Fig. 29 (d)). Since the straight part 91 is not cut off, this is completed.

According to the sewing machine 200 provided with the cloth cutting device 201 described above, the eyelet scalpel 101 is rotated so that the eyelet scalpel 101b moves to a first position where the cloth can be cut and a second position to retract. In addition, since the cloth can be moved back and forth in the conveyance table 14, when the flat scalpel 160 is used, the eyelet button hole 92 and the lying eye 94 are changed without replacing the scalpel and the scalpel. It is possible to change the cutting length freely. In addition, if the step meso tray 167 is used, only the eyelet portion 90, the eyelet button hole 92, and the lying eye hole 94 can be formed without exchanging the meso tray and the scalpel. Can be formed.

In addition, the sewing machine 200 is controlled according to the same pattern data and control method as in the first embodiment, so that the cut length correction lc is set in the same way as in the first embodiment. The hole 93 can be prevented from being produced to the position fitted at the sewing start point and the sewing end point, thereby preventing the aforementioned sewing failure.

Also, since the laid eye offset amount (cc) can be set, a straight hole (93) can be formed at an arbitrary position of the knitting seam, and the cut length correction (lc) can be set. The length of 93 can be changed arbitrarily, and the lying eye hole 94 corresponding to various specifications can be formed.

Also, since the height of the ball feedable mesial can be set, setting the height of the ball feedable mesquid at about the same height as the thickness of the cloth will increase the amount of the mesmerize to the minimum required amount, and reduce the cycle time required for the formation of the buttonhole. Can be.

In addition, the sewing machine 200 also has the following effects as compared to the sewing machine of the first embodiment.

1. Since not only the eyelet blade 101b but also the straight blade 102b are cut by a method of cutting, the blade edge of the straight blade 102b can be made rounder than the straight blade 61b of the first embodiment. Difficult to hang In addition, since the blade edge is round, the cutting feeling of the scalpel is less likely to be lowered, so that the cutting of the cloth does not occur when the cutting feeling decreases.

In addition, since the groove is not disposed on the mass receiving side as in the first embodiment by pushing and cutting, it is not necessary to remove the cut debris in the groove.

2. In the first embodiment, the cloth waste path is disposed in the inner part as indicated by reference numeral 17. However, in the second embodiment, the path of collecting the waste is disposed on the bed part 200b side, so the inner part of the arm is widely used. It is possible.

3. The cloth trash which has passed through the cloth trash paths 101e and 104a by the cloth trash guard 122 is likely to be collected at a predetermined place on the base plate 103a without being scattered, and is also sucked by the aspirator 134. Cloth waste can be recovered. That is, even if the path | route which collect | recovers cloth | waste waste in the cloth | trash waste path 104a and the boss hole 131a is divided, it can collect | recover reliably. In addition, the path is divided so that the cloth waste path on the side of the scalpel unit 100 on the basis of the base plate 103a may be changed depending on the evacuation direction of the eyelet mes (see variant 1). By changing the attachment position of the boss 133, the same recovery structure can be taken, and the cloth waste path can be set freely.

In addition, in the second embodiment, it is possible to use both of the planar scalpel and the step scalpel for the scalpel, but it is possible to use one having a step between the straight scalpel so that the eyelet scalpel becomes higher as a cloth cutting scalpel. You may do so. In this case, only the eyelet part 90 can be formed even if a planar scalpel is used, that is, only the eyelet button hole 92, the lying eye hole 94, and the eyelet part 90 can be freely formed.

Modifications of the second embodiment will be described.

(Modification 1)

Modification 1 will be described with reference to FIGS. 31 and 32. In FIGS. 31 and 32, the same members as in FIGS. 20 to 22 are denoted by the same reference numerals, and description thereof is omitted.

In the mass unit 300 in the modification 1, the meso stand member 303 is used instead of the meso stand member 103. As in the meso stand member 103, the meso stand member 303 is fixed to the bed of the sewing machine 200 by the fixing screws 152 and 152, and the base plate 303 a is fixed to the front of the base plate 303 a. The scalpel support 303b is formed to rise up, and the block scaffold 303c is formed on the upper part of the scalpel support 303b, and the straight scalpel member 102 is fitted on the upper surface of the scalpel support 303b as in the second embodiment. . However, the scalpel support 303b here is shorter in the rear than the scalpel support 103b and formed to have a width that supports the block body 303c directly below, and thus does not support the eyelet scalpel base 304 described later. not.

In addition, a flat portion 303d is disposed on the upper surface of the base plate 303a, and a guide groove 303e is disposed in the center of the slide portion 303d along the front-back direction.

On the other hand, the base of the eyelet scalpel 304 is disposed on the upper surface of the slide portion 303d. An eyelet scalpel member 101 is fixed to the upper surface of the eyelet scalpel base 304 as in the second embodiment, and a cloth waste path 101e is formed inside the eyelet scalpel member 101. A fitting protrusion 304b fitting to the guide groove 303e is disposed at the bottom of the eyelet scalpel base 304. Accordingly, the base of the eyelet scalpel 304 is able to move back and forth the upper surface of the slide portion along the guide groove 303e.

In the base of the eyelet scalpel 304, a cloth waste path 304a that is continuous to the cloth waste path 101e of the eyelet scalpel member 101 is formed. This cloth trash path 304a is inclined backward to the ground in Fig. 31 (b) so as not to overlap with the path of forward and backward movement of the eyelet scalpel base 304, unlike the cloth trash path 104a which is inclined backward. It is formed so as to face downward. The cloth waste cut by the eyelet scalpel 101b falls into the boss hole 131a via the cloth waste paths 101e and 304a and is discharged to the outside. In addition, according to the direction of the cloth waste path 304a, the cloth waste guard 306 is arranged to surround the side surface of the base of the eyelet scalpel 304 and is fixed to the base plate 303a by the stop screws 307 and 307. do.

The cylinder mounting plate 301 fixing the same air cylinder 310 as the air cylinder 110 is moved back and forth by the stop screws 302 and 302 at a position which does not interfere with the forward and backward movement of the eyelet scalpel base 304. It is fixed to the upper surface of the base plate 303a to be adjustable.

The screw part 310b which a screw is broken to the outer side is fixed to the front-end | tip of the rod 310a, and this screw part 310b makes the front-back position to the screw hole formed in the back of the eyelet scalpel base 304 through the nut 305. It is attached by adjusting. Therefore, in the modification 1, the base of the eyelet scalpel 304 is moved back and forth according to the appearance of the rod 310a, so that the air cylinder 310 is off and stands up when the rod 310a is protruding (Fig. 32 (a)), and when the rod 310a is pulled in, the eyelet scalpel base 304 is tensioned and moved backwards through the thread portion 310b.

The position of the front side of the eyelet scalpel base 304 pushed by the air cylinder 310 is determined by adjusting screws 115 and 115 disposed inside the rear portion of the block body 303c as in the first embodiment. have.

The cutting operation performed by the scalpel unit 300 and the planar scalpel 160 (or the step scalpel 167) having the above constitution is almost the same as in (1) to (4) described in the first embodiment. The only basis for the eyelet scalpel 304 is to retreat by going straight backward.

That is, in the case of cutting the eyelet part 90, as shown in FIG. 32 (a), the base of the eyelet scalpel 304 is in front, and the flat scalpel 160, the eyelet scalpel 101b, and the straight scalpel 102b coincide with each other. . If the step scalpel receiving 167 matches only the eyelet scalpel 101b. At this time, the position of the eyelet scalpel 101b is the first position.

Air is supplied to the joints 163 and 164 at the same timing as that of the first embodiment, and the cloth waste generated by cutting passes through the cloth waste paths 101e and 304a to the side of the eyelet scalpel base 304. Is discharged from and is sucked into the aspirator 134 and discharged.

In the case of forming the straight portion 90 or the lying eye hole 94, the base of the eyelet scalpel 304 does not interfere with the flat scalpel 160 (step scalpel 167) as shown in FIG. 32 (b). The back is retracted to the position, and the cloth is cut only by the flat scalpel 160 (step scalpel 167) and the straight scalpel 102b. At this time, the position of the eyelet scalpel 101b is the second position.

Even if the sewing machine is provided with a cloth cutting device having the above-described scalpel unit 300, the cloth cutting device 201 is provided because the eyelet scalpel 101b is configured to be moved forward and backward. Similarly to the sewing machine 200, when the planar scalpel 160 is used, the eyelet button hole 92 and the lying eye hole 94 may be freely formed. When the stepped scalpel 167 is used, the eyelet button hole 92 and the lying eye hole 94 may be freely formed, respectively, and only the eyelet part 90 may be formed.

(Modification 2)

A modification 2 will be described with reference to FIG. 33. In FIG. 33, the same code | symbol is attached | subjected about the member completely identical to FIGS. 20-22, and description is abbreviate | omitted.

The cloth cutting device 400 of the modification 2 is comprised by the up-and-down station with 1st Example, The cloth cutting blade 411 is arrange | positioned at the upper side, and the scalpel is arrange | positioned at the lower side.

The scalpel mounting bracket 410 is fixed to the direct drive shaft 40 constituting the same cloth cutting driving means as the scalpel driving means 170, and the cloth cutting scalpel 411 with respect to the scalpel mounting bracket 410. Is attached. On the bottom surface of the cloth cutting blade 411, the eyelet scalpel portion 412 formed in the liquid phase and the straight scalpel portion 413 formed in a straight line are continuously formed integrally.

A cloth trash path 410a is formed in the transverse direction inside the scalpel mount 410, and air is sucked in the arrow C direction through the joint 418 with respect to the cloth trash path 410a. The cloth trash chute 416 for collecting the cloth trash to protrude to the outer surface of the scalpel attachment 410 at the tip of the cloth trash path 410a is fixed through the screw 417. The pipe 414 is provided to the cloth trash chute 416. ) Is disposed, and the hose 415 is connected to the other end side of the pipe 414.

The cloth trash path 410b is formed inside the scalpel attachment table 410 to be connected to the cloth trash path 410a. The cloth trash path 411a which is continuous with the cloth trash path 410b is also formed in the inside of the cloth cutting blade 411, and is opened in the bottom surface of the eyelet scalpel 412.

The lower receiving unit 420 is configured by attaching each member on the receiving base 403. The base plate 403a is provided with a mass receiving support 403b similar to the scalpel support 103b and the same block body 403c as the block body 103c, and has almost the same shape as the meso stand member 103. . However, in the modified example 2, since the cloth waste is not discharged from the bottom of the scaffold base 403, the only difference is that a hole for passing the cloth waste is not disposed in the scaffold base plate 403a.

The upper surface of the block body 403c is fixed with a straight scalpel 402 having a flat upper surface by matching with the straight scalpel 413. This fixing structure is the same as that of the straight scalpel member 102. In addition, a recess not shown in the form of a rectangular parallelepiped shape is formed inside the scaffold support 403b, and the base for the eyelet scalpel 404 is fitted to the recess. The eyelet scalpel base 404 is freely rotatable by the support shaft 107 in the same way as the eyelet scalpel base 104 with respect to the scalpel support 403b and is also counterclockwise in FIG. 33 with the spring 108. Attached in a biased state. In addition, the base of the eyelet scalpel 404 is pushed up by the cylinder pin 114 at the tip of the air cylinder 11, similarly to the base of the eyelet scalpel 104, and the link 116 attached to the cylinder pin 114. And fall by the spring 108.

The upper surface of the eyelet scalpel base 404 is fixed to the eyelet scalpel 401 having a flat upper surface by coinciding with the eyelet scalpel 412. This fixing structure is the same as the eyelet scalpel member 101. The mass receiving device is constituted by the straight receiving device 402 and the eyelet receiving device 401.

An air vertical hole 404a is formed in the interior of the eyelet scalpel base 404 to allow air to pass therethrough. Moreover, the side surface (opposite side of the surface shown in FIG. 33) of the eyelet scalpel base 404 is provided with the horizontal hole which is not shown in figure which connects to the air vertical hole 404a, and the air line 406 is provided in this horizontal hole. It is connected through the joint part which is not shown in figure. An air vertical hole 401b is formed inside the eyelet scalpel 401, which is continuous with the air vertical hole 404a and becomes an opening in the upper surface 401a. Therefore, when air is supplied from the air line 406, the air is ejected toward the upper eyelet scalpel 412 via the air vertical holes 404a and 401b. The fabric waste generated by the formation of the eyelet part 90 enters into the fabric waste paths 411a, 410b, and 410a by the air ejected from the air vertical hole 401b, and is absorbed by the air sucked from the joint 418. Towards the cloth waste chute 416, it is discharged out of the sewing machine via the air pipe 414, hose 415.

As for the cutting operation performed by the cloth cutting device 400 having the above-described structure, the cloth cutting blade 411 moves up and down similarly to the plane scalpel 160, and the eyelet scalpel similarly to the eyelet scalpel member 101. Except that the member 401 rotates and retracts, it is the same as (1)-(4) demonstrated in 1st Example.

That is, when cutting the eyelet portion 90 and the straight portion 91 of the eyelet button hole 92, the cloth cutting blade 411 is lowered and the eyelet scalpel 401 as shown in Fig. 33A. ) And the straight mass receiver 402 coincide. At this time, the position of the eyelet receiving tray 401 is the first position. In addition, since cloth waste is generated, air is supplied to the air line 406 and the joint 418, and the cloth waste is discharged out of the sewing machine.

When the straight portion 91 and the lying eye hole 94 are formed, as shown in Fig. 33 (b), the base for receiving the eyelet scalpel 404 is rotated in the counterclockwise direction, and the cloth cutting scalpel ( The cloth is cut only by the 411 and the straight scalpel 402. At this time, the position of the eyelet receiving tray 401 is the second position.

Even in the sewing machine in which the cloth cutting device 400 is disposed, the eyelet button hole 92 and the lying eye hole 94 may be formed to a free length, respectively, similar to the sewing machine 200 having the cloth cutting device 201. .

In addition, when the step is arranged such that the upper surface 401a side of the eyelet scalpel 401 is higher than the upper surface 402a of the straight scalpel 402, the eyelet button hole 92 and the lying eye hole 94 are respectively freed. In addition to the length, only the eyelet part 90 may be formed.

(Modification 3)

A modification 3 will be described with reference to FIG. 34. In FIG. 34, the same code | symbol is attached | subjected about the member same as FIG. 20-FIG. 22, and description is abbreviate | omitted.

The deformation | transformation of the mesut base member 503 in the mes unit 500 in 3 has the flat base plate 503a, and the semi-circular semicircular plate part 503b is mounted on this base plate 503a. The pivot shaft 505 passes through the center of the semi-circular plate portion 503b, and the pivoting meso stand 504 is attached to the pivot shaft 505 so as to be pivotally supported freely.

The pivoting meso stand 504 is a block-shaped member formed to be bent in the middle, and the eyelet scalpel member 501 is fixed to the rear upper surface by the boundary of the bent portion 504a, and the straight scalpel member 502 is provided on the front upper surface. It is fixed. The fixing structure of these scalpels is the same as in the first embodiment.

A liquid eyelet scalpel 501b is formed at an upper edge of the eyelet scalpel member 501, and a cloth waste path 501a is formed inside thereof. On the upper surface of the straight scalpel member 502, a straight straight scalpel 502b is formed.

The stopper 519, 519 is fixed to the side of the rotating mestool 504 by screws 520, 520, and the eyelet scalpel member 501 and the straight scalpel member 502 are stoppers 519, respectively. Positioning is performed at the rear by 519.

Rotating meso stand 504 is formed with a cloth trash path 504d which is continuous with the cloth trash path 501a and is inclined to face downward. The cloth waste discharged from the cloth waste path 504d is directed out of the sewing machine through the boss hole 131a in the base plate 503a as in the first embodiment. The cloth waste guard 508 is screwed onto the base plate 503a.

The first triangular cam 504b and the second triangular cam 504c, which are two triangular cams, are disposed on the bottom of the pivoting meso stand 504, while the triangular cams 504b and 504c are disposed on the upper surface of the base plate 503a. The moving cam 517a configured to be movable back and forth is disposed at a position contactable with the moving cam.

The air cylinder 110 is fixed by the cylinder screws 112 and 112 with respect to the cylinder mounting plate 511 which is fixed to the base plate 503a with the stop screw 518 and 518. As shown in FIG. The rod fixing plate 515 is fixed to the rod 110a of the air cylinder 110 by the fixing screw 516.

The rod fixing plate 515 has a substantially rectangular shape when viewed in the front-rear direction, and a hole (not shown) is formed in the upper portion of the right side (upper in Fig. 34 (a)), and the hole is attached to the cylinder mounting plate 511 in this hole. The fixed stopper shaft 512 is inserting. A stopper 513 is attached to the tip of the stopper shaft 512. The cam fixing plate 515a is directed from the lower part of the right part to face forward. The cam support part 517 which supports this cam fixing plate 515a as one body with the moving cam 517a is being fixed by the cam screws 514 and 514. As shown in FIG.

The operation of the mass unit 500 of the above configuration will be described. FIG. 34 shows that the first triangular cam 504b burns on the upper edge of the moving cam 517a with the rod 110a drawn in, and the eyelet scalpel member 501 stands up so that the straight scalpel member 502 is inclined. You fall down. At this time, the eyelet scalpel 501b is positioned at a first position that is a cloth cutting position, and the straight scalpel 502b is positioned at a second position where cloth cutting is impossible. Therefore, in this state, only the eyelet part 90 is formed when the mass receiver descends from the upper side.

In this state, when the rod 110a protrudes, the cam fixing plate 515a is advanced as the rod fixing plate 515 is guided to the stopper shaft 512 to move forward, and thus the cam support part 517 and the moving cam 517a. This advances.

The moving cam 517a moves away from the first triangular cam 504b by advancing and eventually contacts the second triangular cam 504c, and moves the rotating mestool 504 counterclockwise in FIG. 34 (b) by forward force. Rotate in the direction. At the end, the second triangular cam 504c is burned by the moving cam 517a, and the eyelet scalpel member 501 is inclined to fall down, so that the straight scalpel member 502 stands up. At this time, the straight scalpel 502b is positioned at the first position where the cloth is cut, and the eyelet scalpel 501b is positioned at the second position where the cloth cannot be cut. Therefore, in this state, when the mass receiver descends from above, a straight portion 91 or a lying eye hole 94 is formed. Further, the movement of the movable cam 571a stops at the place where the rod fixing plate 515 contacts the stopper 513.

When the rod 110a retracts in this state, the pivoting meso stand 504 rotates clockwise as it moves to the rear of the moving cam 517a to return to the state of FIG. 34.

In the case where the sewing unit 500 is disposed above, the eyelet scalpel member 501 and the straight scalpel member 502 are alternately moved between the first position and the second position by the rotating mestool 504. The eyelet button hole 92 and the lying eye hole 94 can be freely formed, respectively, and only the eyelet part 90 can be formed.

Further, in each of the second embodiment and its modifications, the evacuation direction of the scalpel or the receiving portion moving the first position and the second position may be a transverse direction that is not limited to the front-rear direction. Moreover, the specific mechanism of evacuation can also be changed suitably. Moreover, you may change the positional relationship of a scalpel and a scalpel up and down.

According to the cloth cutting control apparatus of the sewing machine of Claim 1, the to-be-sealed object is made using both an eyelet scalpel and a straight scalpel on the basis of control data including data concerning the length of the buttonhole and data about the length of the knitting seam. The eyelet button hole is formed in the control unit so as to be formed. Therefore, if the straight scalpel is moved to the rear portion of the straight portion to cut the object to be cut sequentially, the length of the straight portion of the eyelet button hole can be changed without replacing the scalpel or the scalpel. If the straight scalpel is moved to the rear of the straight hole and the cut object is sequentially cut, the length of the straight hole can be changed without replacing the scalpel or the receiving tray.

In addition, when the sewing seam is formed to tie the sewing start point and the sewing end point after forming the seam, the straight line is extended to the position where the sewing start point and the sewing end point are set by setting data on the length of the button hole. It can be prevented from coming out can prevent the above-mentioned sewing failure.

According to the cloth cutting control apparatus of the sewing machine according to claim 2, the same effect as in claim 1 can be obtained, and the eyelet button hole is formed in the eyelet scalpel and the straight scalpel, and then the straight scalpel is moved to the rear part of the straight portion. If the object to be sealed is sequentially cut based on the data for changing the length of the straight portion of the button hole, the straight portion of the eyelet button hole can be extended based on the data for changing the length of the straight portion, and It is possible to form button holes corresponding to various specifications without replacing the base.

According to the cloth cutting control apparatus of the sewing machine according to claim 3, the same effect as in claim 1 or 2 can be obtained, and at the same time, data for changing the position of forming a straight hole along the longitudinal direction of the seam can be set. A straight hole can be formed at an arbitrary position for the knitting seam, and data for changing the length of the straight hole can be set so that the length of the straight hole can be arbitrarily changed. It is possible to form button holes corresponding to various specifications without replacing the measuring bowl.

According to the cloth cutting control apparatus of the sewing machine according to claim 4, the same effect as in claim 1 can be obtained, and the shape of the cloth cutting blade can be easily identified, and the eyelet is used when forming the eyelet button hole using the cloth cutting blade. The control device can easily calculate the length of the to-be-sealed portion of the cut-out portion and the straight cut portion that are not cut by the scalpel portion and the straight scalpel portion, and use the straight scalpel portion to improve workability of the buttonhole forming operation. You can.

According to the fabric cutting control apparatus of the sewing machine of claim 5, the same effect as in claim 1 can be obtained, and the eyelet button hole is formed in the object to be sewn using both the eyelet mes and the straight mes, or the object to be sewn with only the straight mes. Since the selection data for selecting whether to form a straight hole in the hole can be set, eyelet button hole or straight hole can be easily formed. For example, when forming a straight hole, There is no need to replace with a predetermined cloth cutting knife corresponding to the shape.

According to the fabric cutting control apparatus of the sewing machine of claim 6, the same effect as that of claim 1 can be obtained, and at the same time, when the button hole is formed in the to-be-sealed material, it is moved. Since the data relating to the rising height of either the cloth cutting blade or the mesial can be set, if this data is set at almost the same height as the thickness of the to-be-sealed material, As a result, the cycle time for forming the buttonholes can be shortened.

According to the cloth cutting control apparatus of the sewing machine according to claim 7, the same effect as that of claim 1 is provided, and the changing means for changing the contents of the control data is used. Can be formed.

According to the invention of claim 8, at least one of the eyelet scalpel portion and the straight scalpel portion of the cloth cutting scalpel coincides with the scalpel and the first position capable of cutting the object to be cut, does not coincide with the scalpel. Can move the second position. Accordingly, various button holes can be formed.

For example, the mesial receiver is a type in which the eyelet scalpel portion and the straight scalpel portion are formed flat. When only the eyelet scalpel portion is moved by the moving means, when the eyelet scalpel portion is in the first position, it forms an eyelet button hole. When in the 2nd position, a straight button hole (lying eye hole) can be formed. When only the straight scalpel moves, the eyelet button hole is formed when the straight scalpel is in the first position, and only the eyelet portion is formed when the straight scalpel is in the second position. If both sides are movable, three kinds of eyelet button holes, lying eye holes, and eyelet parts can be formed.

According to the invention as set forth in claim 15, at least one of the eyelet receiving portion and the straight receiving portion by the moving means of the receiving portion coincides with the cutting edge of the cloth, and the first position that does not coincide with the cutting edge of the cloth. The second position can be moved. Accordingly, various button holes can be formed.

For example, the cloth cutting scalpel is a type in which the eyelet scalpel portion and the straight scalpel portion are formed almost flat. When only the eyelet scalpel portion moves, the eyelet buttonhole forms an eyelet button hole when the eyelet scalpel portion is in the first position. If you are in, can form a straight button hole (lying eye hole). When only the straight scalpel receiving part is moved, the eyelet button hole is formed when the straight scalpel receiving part is in the first position, and only the eyelet part is formed when the straight scalpel receiving part is in the second position. If both are movable, three types of eyelet button holes, lying eye holes, and eyelet parts can be formed. Therefore, various button holes can be formed without replacing the measuring bowl.

According to claim 17, in addition to the effect of the invention of claim 8 or 15, it is possible to cut the cloth cutting means while moving the relative to the sewing object without replacing the scalpel member to form button holes of various lengths.

Claims (17)

An eyelet scalpel portion formed on the sewing machine which forms a buttonhole in the to-be-sealed object and simultaneously forms a seam around the button-hole of the to-be-sealed object, and forms the eyelet portion of the eyelet button hole formed of an eyelet part and a straight part; And a cloth cutting means having a cloth cutting blade having a straight blade portion for forming a straight portion, and a knife receiver 62 disposed to face the cloth cutting blade, wherein the cloth cutting blade is relatively wound relative to the blade holder. When cutting the object to be controlled by using both the eyelet scalpel portion and the straight scalpel portion to control the eyelet button hole formed in the object to be sewing and the linear scalpel can form a straight hole in the object to be sealed Cloth cutting control device of the sewing machine to control to control, the control day for forming the button hole and the knitting seam The memory comprises a multiple storage means for, The control data includes data about the length of the buttonhole and data about the length of the knitting seam, Cloth cutting control device of the sewing machine, characterized in that for controlling the driving of the cloth cutting means based on the control data. The method of claim 1, The control data includes data for changing the length of the straight portion of the eyelet button hole when the eyelet button hole is formed in the object by using both the eyelet scalpel portion and the straight scalpel portion. Cloth cutting control device of the sewing machine. The method of claim 1, The control data includes data for changing the formation position of the straight hole along the longitudinal direction of the seam when the straight hole is formed in the object to be sewn with only the straight scalpel, and the length of the straight hole is changed. Cloth cutting control device of a sewing machine, characterized in that the data is included. The method of claim 1, The control data includes data relating to the length of the eyelet scalpel, data relating to the length of the straight scalpel, and data relating to the length between the eyelet scalpel and the straight scalpel. Control unit. The method of claim 1, The control data includes selection data for selecting whether to form an eyelet button hole in the to-be-sealed object by using both the eyelet scalpel portion and the straight scalpel portion or to form a straight hole in the to-be-sealed material using only the straight scalpel portion. Cloth cutting control device of the sewing machine, characterized in that. The method of claim 1, The control data fabric cutting control apparatus for a sewing machine, characterized in that the data relating to the rising height of any one of the cloth cutting knife or the scalpel to move when forming a button hole in the sewing object. The method of claim 1, And cutting means for changing the contents of said control data. It is arranged in the sewing machine which forms a buttonhole in the to-be-sealed material and simultaneously forms a knitting seam around the buttonhole, An eyelet scalpel forming the eyelet portion of the eyelet button hole formed of an eyelet portion and a straight portion, a cloth cutting scalpel having a straight scalpel forming the straight portion, and disposed up and down to face the cloth cutting scalpel, And a cloth cutting means including an eyelet mesial receiving portion that matches with the mesh receiving portion, a scalpel plane scalpel having a straight mesial receiving portion matching with the linear mesuring portion, or a step mesing receiving; It is provided with a cloth cutting drive means for driving one side in the up and down direction so that the cloth cutting blade and the meso trays are folded, The said cloth cutting means is a cloth cutting device of the sewing machine which cuts a to-be-sealed object and forms a button | hole hole when the cloth cutting blade and a mesial pan reach and match, At least one of the eyelet scalpel and the straight scalpel of the cloth cutting blade is configured to be movable so as to take a first position in which the object to be cut is matched with the scalpel and a second position that does not coincide with the scalpel. Become, And moving means for moving between the first and second positions with respect to the first and second positions of the eyelet scalpel and the straight scalpel. The method of claim 8, As a scalpel, both a flat scalpel formed of the eyelet scalpel portion and the straight scalpel portion formed on substantially the same horizontal plane, and a stepped scalpel formed with a step so that the eyelet scalpel portion and the straight scalpel portion are formed on different horizontal surfaces. It is configured, the cloth cutting device of the sewing machine, characterized in that by using any one attached. The method of claim 9, Storage means for storing a plurality of control data for forming a buttonhole and a knitting seam; The control data includes the formation of an eyelet button hole by a planar scalpel and a cloth cutting blade, any one of a flat scalpel tray or a step scalpel tray, and the formation of a straight hole by only the straight scalpel of the cloth cutting blade; Hole type selection data for selecting one of the formation of the eyelet button hole by the step difference receiving means and the cloth cutting blade and the formation of the eyelet part only by the step difference receiving means and the eyelet mesing portion; And said fabric cutting drive means and control means for controlling and driving said moving means at a predetermined timing to form a hole selected from said hole type selection data. The method of claim 8, The eyelet scalpel portion is fixed to the base of the eyelet scalpel, the cloth cutting device of the sewing machine, characterized in that the base for the eyelet scalpel to move between the first position and the second position. The method of claim 8, The eyelet scalpel portion is fixed to the base of the eyelet scalpel, the cloth cutting device for a sewing machine, characterized in that the base for the eyelet scalpel moves between the first position and the second position by sliding in a straight line. The method of claim 8, The eyelet scalpel and the straight scalpel are both fixed to the cloth cutting meso stand, and the eyelet meso portion and the straight meso part alternately move between the first position and the second position as the cloth cutting meso stand rotates. Cloth cutting device. The method of claim 8, The eyelet scalpel is fixed to the eyelet scalpel foundation, and is configured to move the first position and the second position according to the movement of the eyelet scalpel foundation, The cloth scrubbing path for recovering the eyelet-shaped cloth waste caused by the formation of the eyelet-shaped cloth waste caused by the formation of the eyelet-shaped portion and the eyelet-meshed portion from the inner side of the eyelet scalpel and the base of the eyelet scalpel to the outside. Is formed in a direction that does not prevent movement, A cloth cutting device for a sewing machine, characterized in that the cloth waste which has exited the cloth waste path is configured to be discharged into a pipe which is connected to the aspirator and is not connected to the cloth waste path. It is arranged in the sewing machine which forms a buttonhole in the to-be-sealed material and simultaneously forms a knitting seam around the buttonhole, The eyelet scalpel having the eyelet scalpel forming the eyelet portion of the eyelet button hole formed of the eyelet portion and the straight portion, the straight scalpel having the straight scalpel forming the straight portion, and the fabric scalpel are disposed up and down to face each other. Cloth cutting means having an eyelet scalpel portion matching with and a scalpel having a straight scalpel portion matching with the straight scalpel portion, It is provided with a cloth cutting drive means for driving one side in the up and down direction so that the cloth cutting blade and the meso trays are folded, The cloth cutting means is a cloth cutting device of a sewing machine for cutting the sewing object to form a buttonhole when the cloth cutting scalpel and the mesquite match each other, At least one of the eyelet scalpel receiving portion and the straight scalpel receiving portion of the scalpel is moved to take a first position in which the object to be cut is matched with the cloth cutting blade and a second position that does not coincide with the cloth cutting blade. Is configured to be And moving means for moving between the first position and the second position with respect to taking the first position and the second position of the eyelet scalpel portion and the straight scalpel portion. The method of claim 15, The eyelet scalpel part is fixed to the base for the eyelet scalpel, the base for cutting the eyelet scalpel, the cloth cutting device of the sewing machine, characterized in that to move between the first position and the second position. The method according to claim 8 or 15, And relative moving means for displacing the cloth cutting means in a direction parallel to a straight portion of the eyelet button hole formed in the sewing object with respect to the sewing object.