JPH08323078A - Method and apparatus for feeding cloth - Google Patents

Abstract

PURPOSE: To provide an apparatus which can easily correspond to cloth which does not have an annular shape or of a different size by blowing compressed air to a cloth feeder or by sucking air from the cloth feeder to make the cloth come into contact with the cloth feeder so that driving force can be transmitted. CONSTITUTION: In a sewing machine, a presser foot 21a is lowered to sandwich annular cloth W and each of an elevating pin device 24 and an initial processing device 14 is returned to a reset state. Right and left moving stands of XY driving stands are returned to the right side, and in association with this, an upper side cloth end holding device 10, a second feeder 7, a third feeder 8, a right reversing guide 4, and the like are returned to the right side. In the second feeder 7, a guide cylinder synchronized with the movement amount rotates counterclockwise. Subsequently, as shown in (b), a first feeder 6 approaches to an upper free roller 22 and the annular cloth W and an annular rubber G are sandwitched and compressed air is blown from an air compressing unit 158 to securely wind the annular cloth W and the annular rubber G around the upper free roller 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dough feeding control method and a dough feeding control device.

[0002]

2. Description of the Related Art FIG.
As shown in (b), it is usual to provide a bag-shaped portion B in which a ring-shaped rubber G is installed along the circumferential direction thereof. As shown, the end of the cloth W is bent twice at the first and second folded-back portions R1 and R2 to form an S-shape, and along the longitudinal direction (circumferential direction) of the inside of the second folded-back portion R2. A method may be adopted in which the vicinity of the material end E and the vicinity of the folded end of the first folded portion R1 are sewn together after sandwiching the annular rubber G (Japanese Utility Model Publication No. 63-45258, Japanese Patent Publication No. 59-45392). , Japanese Patent Publication No. 7-153, etc.).

By the way, in the sewing work of sewing the vicinity of the material end E and the vicinity of the folding end of the first folded portion R1 with a sewing machine, generally, the cloth W is hung between a pair of left and right feed rollers attached to the sewing machine, and one of them is used. This is done by rotating one of the rollers in synchronism with the fabric feed pawl mechanism of the sewing machine. In this case, both folded-back portions R1,
The pulling width L1 between the folding ends of R2 and the second folding portion R
The pulling width L2 from the folded end of 2 to the cloth edge E does not cause deviation from the respective predetermined dimensions, so that appropriate tension is generated in the cloth W at least at the portion where the cloth W passes through the sewing machine. The distance between the rollers was adjusted.

[0004]

In the apparatus configured to feed and hold the cloth W by using the pair of right and left rollers as described above, the mutual interval between the rollers is reset for each different size of cloth W. However, it was difficult to deal with lot changes and the like. Further, when the size difference of the cloth W is large (such as when sewing non-pants), it may not be possible to simply adjust the mutual distance between the rollers (that is, a different type of apparatus as a whole is required).

Further, needless to say, the above-mentioned device cannot hold the dough having no annular shape. The present invention has been made in view of the above circumstances, and is capable of easily adapting to fabrics of different sizes, and is capable of being performed even for fabrics having no annular shape. An object of the present invention is to provide a method and a dough feeding control device.

[0006]

In order to achieve the above object, the present invention takes the following technical means. That is, in the dough feeding control method according to the present invention, the dough is driven by blowing compressed air to the dough feeding part or sucking the dough from the dough feeding part to at least one dough feeding part that conveys the feeding drive to the dough. It is characterized in that it is held in contact with the force transferable state.

Further, in the dough feeding control device according to the present invention, at least one dough feeding part for feeding the dough to the dough, and an air pressing part for blowing compressed air from the outside of the abutting position of the dough to the dough feeding part. It is characterized by having and.

[0008]

In the dough feeding control method according to the present invention, compressed air is blown from the outside of the dough to the dough feeding part, or a suction action is caused inside the dough feeding part to cause the dough feeding part. The dough is held in contact with. Therefore, it is not necessary to apply tension to the fabric as a whole, and naturally, a roller for this purpose is not particularly necessary.

In the dough position control device according to the present invention, in performing the above-mentioned control, since the air pressing part is simply attached to the dough feeding part, it is extremely simple.
The advantages are small size and easy control.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a sewing device used when sewing a waist portion of pants, which sewing machine is configured with a sewing machine 1 as a core, and is used as a pants material (hereinafter, a shape of a portion for forming a waist portion). From the "ring material W") and the ring rubber G are set,
The waist can be sewn automatically.

In the following, for convenience of explanation, the depth direction of FIG. 1 is referred to as "front" and the front direction is referred to as "rear", the left side of FIG. 1 is referred to as "left", and the right side thereof is referred to as "right". I will say. This sewing device allows the sewing machine 1 to feed left and right reversing guides 3 and 4 that hold the annular material W and the annular rubber G in an annular shape, and the first and the first that enable the annular material W and the annular rubber G to be fed. The second and third feeding portions 6, 7 and 8 and the end portion of the annular material W are formed with an S-shaped folded portion by double folding as shown in FIG. Upstream (right side) and downstream (left side) dough edge holding devices 10 and 11 for maintaining the appearance, and both dough edge holding devices 1
It has an initial processing device 14 for finalizing the operations of 0 and 11 in the initial operation, and a tension adjusting portion 15 for applying tension to the erected state of the annular material W and the annular rubber G as necessary.

Of the above, the left reversing guide 3, the first feeding section 6, and the tension adjusting section 15 are fixed to the sewing machine 1 or the workbench 18 on which the sewing machine 1 is placed. On the other hand, the right reversing guide 4, the second and third feeding portions 7 and 8, the upstream and downstream dough edge holding devices 10 and 11, and the initial processing device 14 are provided on the workbench 18. The sewing machine 1 is held by the XY drive table 19 and can be moved back and forth and / or left and right with respect to the sewing machine 1.

In the sewing machine 1, reference numeral 21 is a sewing table, which incorporates a material feed claw mechanism, a material edge trimming mechanism, a thread trimming mechanism, etc. (all are not shown), and a presser foot is provided above the sewing machine. 21a and a sewing needle 21b are provided so as to be vertically movable. The detailed structure of each component will be described below. As shown in FIG. 2, the left reversing guide 3 has a sewing position (presser foot 21a) on the sewing machine 1.
The upper free roller 22 horizontally projects from the vicinity to the rear of the upper free roller 22, and the lifting pin device 23 provided on the downstream side (left side) of the upper free roller 22.

The lifting / lowering pin device 23 is constructed so that the lifting / lowering piece 24 having a pair of upper and lower pins 23a and 23b moves up and down and horizontally turns. Reference numeral 25 is a lifting drive tool such as an air cylinder, and 26 is a swing drive tool such as a rotary air cylinder. The lifting piece 24 is swung by the pins 23a, 23
b is parallel to the upper free roller 22, and the pin 23
a and 23b are performed at about 90 ° with respect to the state in which the respective tips are directed to the upper free roller 22 (see FIG. 14 (b)).

The first feeding section 6 (see FIG. 1) is such that the drive roller 28 can be brought into contact with and separated from the upper free roller 22 from the lower left of the upper free roller 22. Reference numeral 29 is a rotary drive tool such as an electric motor for the drive roller 28, and 30 is a forward / backward drive tool such as an air cylinder for contact / separation drive. FIG. 3 shows a state in which the drive roller 28 is in contact with the upper free roller 22 to transmit the rotational drive.

The tension adjusting unit 15 (see FIG. 1) moves the lower free roller 32 (see FIG. 4), which is provided in parallel with the upper free roller 22 in a diagonally lower right direction of the upper free roller 22, up and down. It is movable.
Reference numeral 33 shown in FIG. 4 is a vertical movement driving tool such as an air cylinder. The XY drive table 19 (see FIG. 1) is a bracket 35 fixed on the work table 18 as shown in FIG.
A front-rear moving frame 36 that is horizontally movable in the front-rear direction of the work table 18 and a left-right moving table 37 that is horizontally movable in the left-right direction with respect to the front-rear moving frame 36. There is. The front-rear moving frame 36 and the left-right moving table 37 are both driven by appropriate advancing and retracting means (not shown) such as belt driving.

The second feeding portion 7 (see FIG. 1) has a plurality of belt driving means 41 along the longitudinal direction around the guide cylinder 40 horizontally projected in the front-rear direction as shown in FIG.
Was handed over. A part of the annular material W near the front end is hooked on the outside of the guide cylinder 40. A main shaft 42 that supports the guide cylinder 40 is provided at the center of the guide cylinder 40.
2 is rotatably held with respect to the standing frame 45 shown in FIG. That is, the second feeding section 7 is provided on the left and right moving table 37 of the XY driving table 19 shown in FIG. 5 via the standing frame 45. Therefore, the third feeding section 8 as a whole can be moved back and forth and left and right.
Reference numeral 46 shown in FIG. 7 denotes a rotary drive tool such as an electric motor for the main shaft 42 (note that the belt drive means 41
The drive tool is not shown).

The second feeding section 7 is related to the development of the present applicant, and the detailed structure other than the above is disclosed in Japanese Examined Patent Publication No. 63-392.
As described in Japanese Patent Publication No. 77. Therefore, the guide tube 4
The annular fabric W can be fed toward the sewing machine 1 by the rotation of 0, and the annular fabric W can be moved in the front-rear direction by the running of each belt driving means 41.

The third feeding portion 8 (see FIG. 1) is
As shown in FIG. 6, it has a drum rotating device 50 and a swinging mechanism 51 that allows the drum rotating device 50 to move toward and away from the second feeding portion 7. Drum rotating device 50
Is a drum 52 having a middle-bulging cylindrical shape such as a drum and rotatable around a horizontal axis, and a plurality of drive disks 53 are arranged at predetermined intervals along the outer peripheral surface of the drum 52 (that is, each drive circle). Board 5
3 are provided in a radial arrangement).
Reference numeral 55 denotes a rotary drive tool such as an electric motor for the drum 52 (the rotary drive tool for the drive disk 53 is not shown). The drum 52 and the rotation driving tool 55 are both provided on a fan-shaped standing rocking plate 57.

This drum rotating device 50 is also related to the development by the present applicant, and the detailed structure other than the above is practically fair 4-1.
No. 909 publication. Therefore, the drum 5
When the outer peripheral surface (driving disc 53) of 2 is pressed against the annular material W, the rotation of the drum 52 can feed the annular material W and the annular rubber G toward the sewing machine 1 and can drive each drive. By rotating the disc 53, at least the annular material W can be moved in the front-rear direction.

The oscillating mechanism 51 includes the upright oscillating plate 57.
It is designed so as to reversely swing around the horizontal pivot 58. Reference numeral 59 denotes a reversal drive tool such as a rotary air cylinder, and the reversal drive tool 59 is fixed to the upright frame 45 shown in FIG. 7 via a bracket 62. That is, the third feeding portion 8 (drum rotation device 50
And the swinging mechanism 51) as a whole is provided on the left and right moving base 37 of the XY drive base 19 shown in FIG. Therefore, the third feeding section 8 as a whole can be moved back and forth and left and right.

The upright oscillating plate 57 is turned over in the state in which the drum 52 of the drum rotating device 50 is close to the second feeding portion 7 by a predetermined distance (the state shown in FIGS. 1 and 6) and the second state.
It is performed between about 90 ° with the state in which the drum 52 is retracted obliquely to the upper right from the feeding unit 7. The right reverse guide 4 (see FIG. 1) is, as shown in FIG. 6, an upright holding plate 63 provided near the right half peripheral portion of the guide tube 40 of the second feeding portion 7, and the upright holding plate 63. It has a plurality of support pins 64a to 64d penetrating the plate 63. Standing holding plate 6
3 is the standing frame 45 through the connecting rod 66.
It is fixed on the rear side (see FIG. 7). That is, the right reversing guide 4 is provided on the left and right moving base 37 of the XY drive base 19 shown in FIG. 5 via the standing frame 45. Therefore, the right inversion guide 4 can be moved back and forth and left and right as a whole.

The support pins 64a to 64d are provided on the guide cylinder 4 respectively.
They are arranged at predetermined intervals along the circumferential direction of 0 and are held in a state in which they can be slid back and forth and rotated in parallel with the guide tube 40. Each of these support pins 64a to 64d
A rubber hooking concave portion 65, which is formed by cutting out a part of a cylindrical surface, is provided at the projecting end portion. And each support pin 64a-6
Although not shown in the drawings, 4d is configured to be driven to slide back and forth and rotate as shown in FIGS. 15 (a) and 15 (b). The rotation of each of the support pins 64a to 64d is the state in which the rubber hooking concave portion 65 is directed outward in the circumferential direction of the guide cylinder 40 (the state in FIG. 6) and the state in which it is directed inward in the circumferential direction (see FIG. 15 (a ))) And about 180 °.

As shown in FIG. 7, the upstream fabric edge holding device 10 (see FIG. 1) is provided with a support plate 70 and a submerged plate 71 behind the standing frame 45 and projecting in opposition to each other along the front-rear direction. have. The support plate 70 is provided in a state in which it projects rearward from a lower portion of a first moving piece 73 that is held so as to be movable back and forth along two upper and lower support shafts 72 that project from the rear portion of the standing frame 45. Has been. A first intermediate support plate 74 is fixed in the middle of both support shafts 72, and a front-rear drive member 75 such as an air cylinder is attached to the first intermediate support plate 74.

A rounded surface-shaped recess 70a is provided on the upper surface of the support plate 70. This recess 70a
When the third feeding portion 8 is in the state of being close to the second feeding portion 7 as shown in FIGS. 1 and 6, the drum 5 of the third feeding portion 8 is
This is provided in order to increase the amount of contact between the drive disk 53 and the annular material W while avoiding interference with 2.

On the other hand, the submerged plate 71 is a first intermediate support plate 74.
A state in which a second moving piece 78 is movably held back and forth along two support shafts 77 protruding from the rear part of the second moving piece 78, which is hung from the lower part of the second moving piece 78 via a hanging plate 79 and protrudes forward. It is provided in. Reference numeral 80 denotes a vertical movement driving tool such as an air cylinder for vertically moving the suspension plate 79. A second intermediate support plate 82 is fixed in the middle of both support shafts 77, and a front-rear drive member 83 such as an air cylinder is attached to the second intermediate support plate 82.

Needless to say, since the support plate 70 and the submerged plate 71 are both attached to the upright frame 45 through the support shaft 72 directly or indirectly as described above, the upstream side thereof Dough edge holding device 10
In this case as well, it is provided on the left and right moving table 37 of the XY driving table 19 shown in FIG. 5 via the standing frame 45. Therefore, the upstream fabric edge holding device 10 can be moved back and forth and left and right as a whole.

The downstream fabric edge holding device 11 (see FIG. 1) is provided behind the columnar frame 88 as shown in FIG.
It has a support plate 90 and a plug-in finger 91 that project toward each other along the front-rear direction. Since the columnar frame 88 is fixed to the front-back movement base 36 of the XY drive base 19 shown in FIG. 5, the downstream side fabric end portion holding device 11 can only move back and forth as a whole.

The downstream fabric edge holding device 11 is further provided with a sagging drop prevention device 92, a floating prevention device 93 and a fabric removal device 94. The support plate 90 (see FIG. 8B) is held movably back and forth along the upper and lower two on the left side of the four support shafts 97 protruding rearward from the lower side of the columnar frame 88. The first moving piece 98 is provided so as to project rearward from its upper portion.
A first intermediate support plate 99 and a second intermediate support plate 100 are fixed to a middle portion of the support shaft 97. Of these, the second intermediate support plate 100 is provided with a front-back motion driving tool 101 such as an air cylinder. There is.

On the other hand, the insertion finger 91 is such that a pair of upper and lower finger pieces are bifurcated toward the front, and support two upper and lower projections projecting rearward from the upper side of the columnar frame 88. A second moving piece 105, which is held so as to be movable back and forth along the shaft 104, is provided below the second moving piece 105 via a hanging plate 106 so as to be projected forward. 10
Reference numeral 7 is a vertical movement driving tool such as an air cylinder for vertically moving the suspension plate 106. No. 3 in the middle of both support shafts 104
The intermediate support plate 108 is fixed, and a back-and-forth drive tool 109 such as an air cylinder is attached to the third intermediate support plate 108. A shaft length adjusting unit 110 is attached to the base of the support shaft 104. Reference numeral 111 is a forward / backward drive tool such as an air cylinder.

The sag drop prevention device 92 is a support plate 90.
Large tongue piece 113 provided at a predetermined distance below the base
The tongue piece 113 has a front-back movement driving tool 11 such as an air cylinder provided on the first intermediate support plate 99.
It is possible to move back and forth by 5. The floating prevention device 93 includes a pressing bias plate 116 that is provided at an upstream side (right adjacent position) of the support plate 90, slightly higher than the support plate 90, and protruding rearward from the support plate 90. I have. This pressure urging plate 116 is provided on the right and the bottom 2
A fourth intermediate support plate 118 fixed to the support shaft 97 of the book behind the first intermediate support plate 99 so that the fourth intermediate support plate 118 can be moved back and forth together with the bracket 120 by a forward / backward drive tool 119 such as an air cylinder. Is.

The material removing device 94 is located on the upstream side (on the right side) of the pressing bias plate 116 and on the support plate 9.
Push-back piece 12 that stands by in a state of retracting forward from 0
The push-back piece 121 has the above-mentioned fourth
It can be moved back and forth by a back-and-forth driving member 122 such as an air cylinder provided on the intermediate support plate 118. As shown in FIG. 1, the initial processing device 14 includes an XY drive base 19
From the left and right moving table 37, the arm stand type bending stay 126 is provided so as to straddle above the upstream and downstream fabric end part holding devices 10 and 11, and is positioned at the rear part of the sewing machine 1. Has become. Therefore, needless to say, the initial processing device 14 can be moved back and forth and left and right as a whole.

As shown in FIG. 9, the initial processing device 14 includes a telescopic arm portion 127 which extends rearward from the front end of the bent stay 126, and the telescopic arm portion 12.
7 has a gripper portion 128 that is vertically movable at the front end portion (rear end portion). In the telescopic arm 127, 130 is a movable piece that is movable along the guide bars 131, and 132 is a front-rear driving tool such as an air cylinder held by a support plate 133 fixed between the guide bars 131. . Further, in the gripper unit 128, 1
Reference numeral 35 denotes an elevating base, which is suspended from the moving piece 130 by an up-and-down moving tool 136 such as an air cylinder, and guided up and down along a guide bar 137.

As shown in FIG. 10, the gripper portion 128 is a lower tongue piece 1 projecting forward from the elevating base 135.
39, and an upper tongue piece 1 which is vertically swingably held by the upper portion
40, and an opening / closing drive tool 141 such as an air cylinder that is provided on the elevating base 135 and drives the upper tongue piece 140. A sewing device having the above-mentioned components (see FIG.
(See) further includes an operation control device, a position control device, and a pneumatic fabric separating device as ancillary functions to the entire configuration.

Although not shown, the operation control device automatically sets the start timing or stop timing of a required operation (for example, setup operation or retreat operation of each component) according to the movement of the operator or the degree of progress of sewing. It is configured as a judgment or an emergency stop. For example, a sensor capable of detecting the right hand of the worker is provided above the right inversion guide 4. Therefore, when this sensor first outputs a detection signal, it is determined that the annular rubber G has been stretched between the left and right reversing guides 3 and 4, and the setup operation of the upstream material edge holding device 10 is automatically started. Also, when the sensor next outputs a detection signal, it is determined that the annular material W has been stretched over, and the setup operation of the left reversing guide 3 is automatically started.

A sensor capable of detecting the sewing start position of the annular material W is provided near the lowermost support pin 64d of the right inverting guide 4. Therefore, when this sensor outputs a detection signal, the retracting movement of the support pins 64a to 64d of the right reversing guide 4 is automatically started in preparation for completion of sewing (the operation will be described later).

As the operation control device, in addition to the above, all functions are stopped when the sewing is completed, the reset operation is performed,
Appropriate sensors and control circuits are provided at appropriate places so that the sewing machine 1 can also be used for emergency stop such as thread breakage, needle breakage, and material breakage. The position control device is operated by the upstream fabric edge holding device 10 (see FIGS. 1 and 7) shown in FIG. 11, and the downstream fabric edge holding device 11 (FIGS. 1 and 8) shown in FIG. reference)
The operation is performed so as to prevent the folded shape from deviating in the process in which the folded portion is formed near the front end of the annular material W and the sewing progresses.

That is, as shown in FIG. 11, this position control device includes a folding edge detecting portion 150 and a material edge detecting portion 151 provided on the support plate 70 of the upstream material edge holding device 10 and both of them. It has a pull-in control unit and a folding width control unit that are operated by the detection units 150 and 151. A non-contact type (transmission type or reflection type) optical sensor is used for both the folding edge detecting section 150 and the material edge detecting section 151.

The folding edge detecting section 150 is provided at the lower portion of the support plate 70 and can detect whether or not the folding edge position of the annular material W coincides with the predetermined advance position. Further, the material edge detecting unit 151 is provided on the upper portion of the support plate 70, and can detect whether or not the material edge position of the annular material W coincides with the predetermined advance position.
In any case, when it is determined that the discrepancy state with respect to the predetermined advance position is determined, the belt driving means 41 of the second feeding unit 7 and / or the driving disc 53 of the third feeding unit 8 (see FIGS. 6A and 6B) are used. It is possible to send a necessary position correction instruction to each of them and operate them by a predetermined amount.

That is, when the folding edge detecting section 150 determines that there is a mismatch, a position correction instruction is sent to at least the belt driving means 41 of the second feeding section 7 to position the annular material W as a whole in the front-back direction. It moves back and forth. Because of this, the pull-in control unit is configured. In addition, when the material edge detecting unit 151 determines that there is a non-coincidence, a position correction instruction is sent to at least the drive disk 53 of the third feeding unit 8 to expand or contract the folding width of the folding unit in the front-rear direction. From the above, the folding width control section is configured.

It should be noted that when the folded edge detecting section 150 determines the coincident state, but only the material edge detecting section 151 determines the inconsistent state, or vice versa, the material edge detecting section 151 coincides. Even when the state is determined, the case where only the folding edge detecting unit 150 determines the mismatched state may naturally occur. Therefore, even the pull-in control section may operate the drive disk 53 of the third feeding section 8 based on the position correction instruction from the folding edge detection section 150, and similarly, the folding width control section may operate. Even if there is, the belt driving means 41 of the second feeding section 7 may be operated based on the position correction instruction from the material edge detecting section 151.

The dough posture processing device is configured to blow compressed air toward the annular fabric W to a proper place at a predetermined timing and in a predetermined direction during the operation of each component. As a result, the annular material W is provided with tension so that wrinkles are stretched and the drive transmission is made highly efficient, or the material of the annular material W is separated.

Various materials are provided for this cloth posture processing apparatus. Among them, the most typical and important one is the cloth feeding control apparatus shown in FIGS. 12 and 16 (a). . This fabric feeding control device is configured by a combination of an air pressing portion 155 such as an air nozzle that moves up and down integrally with the submerged plate 71 of the upstream fabric end holding device 10 and the second feeding portion 7, and When the plate 71 descends, compressed air is blown from the air pressing portion 155 toward the upper part of the second feeding portion 7.

The compressed air blown out from the air pressing portion 155 has a rear portion of the annular material W which does not engage with the support pins 64a to 64d of the right inverting guide 4 and the second feeding portion 7
(Because it is pressed against the belt driving means 41 in the upward state. Therefore, the feeding drive in the fabric feed direction and the movement drive in the direction (front-back direction) orthogonal to the annular fabric W are thereby performed. It becomes possible to transmit with high efficiency.

As the material feeding control device, for example, although not shown, the guide tube 40 of the second feeding portion 7 is used.
It is also possible to replace it with a structure having a suction roller structure (see FIG. 6) or to use it in combination. That is, the air around the guide tube 40 is sucked from between the belt driving means 41 to allow the annular fabric W to be held in contact with the belt.

In addition to the above, this type of material posture processing device blows compressed air downward from the lower surface of the suspension plate 79 holding the submerged plate 71 to assist the pressing action of the air pressing portion 155. (Not shown), which blows compressed air from the lower part of the submarine plate 71 to the front thereof to assist the folding operation shown in FIG. 11 (not shown), blows compressed air backward from the lower part of the support plate 70, etc. Which blows compressed air from the upper part of the insertion finger 91 of the downstream fabric edge holding device 11 (see FIG. 13) to the front thereof to assist the folding operation shown in FIG. 13 (not shown),
Compressing air is blown rearward from the lower part of the support plate 90 or the rear end of the tongue piece 113 to perform dough separation, FIG.
As shown in (b), various types such as an air pressing portion 158 that blows compressed air from above the left reversing guide 3 to the outer peripheral side of the upper free roller 22 to make the annular material W to have tension are provided.

Next, the operation of each component (the specification of each driving tool will be omitted) will be described based on the sewing procedure by the sewing device. Initially, the XY drive 19 (see FIGS. 1 and 5)
(See) waits with the front-rear moving frame 36 retracted forward and the left-right moving table 37 retracted rightward. Further, the swing mechanism 51 of the third feeding portion 8 (see FIG. 6) is the drum rotation device 50.
The upper fabric edge holding device 10 (see FIG. 7).
(Refer to FIG. 8) separates the support plate 70 and the submerged plate 71 from each other, and the downstream side fabric edge part holding device 11 (see FIG. 8) separates the support plate 90 and the insertion finger 91 from each other. , The ring-shaped rubber G and the ring-shaped material W are set in a standby state so that they can be easily set.

Therefore, first, the annular rubber G is bridged between the left and right reversing guides 3, 4 (see FIG. 1). When the sensor of the operation control device detects that the operator's right hand is separated from the right inversion guide 4, the front-rear moving frame 36 of the XY drive base 19 moves rearward to a predetermined position as necessary, and as shown in FIG. As shown in the figure, the support plate 70 of the upstream material edge holding device 10 moves backward to project above the annular rubber G.

Next, the annular rubber G laid over as described above
In the same way, wrap the circular cloth W around the outer circumference of.
For the support plate 70 of the upstream side material end holding device 10,
As a matter of course, cover it on the upper side. When the sensor of the operation control device detects that the operator's right hand is separated from the right inversion guide 4, the swing mechanism 51 of the third feeding portion 8 (see FIG. 6) swings the drum rotation device 50 downward. Therefore, the drum 52 comes to sandwich the annular material W between itself and the support plate 70 of the upstream material edge holding device 10 (see FIGS. 1 and 16 (a)).

Further, as shown in FIG. 11, in the upstream fabric edge holding device 10, the descent plate 71 is moved downward and forward, and the corresponding portion of the front end of the annular fabric W is already connected to the front end of the descent plate 71. Support plate 70 in a state of moving backward and stopping
The rear end is folded twice to form an S-shape. In addition, FIG.
As shown in FIG. 7, in the downstream fabric edge holding device 11, the lowering and forward movement of the insertion fingers 91 and the backward movement of the support plate 90 are performed in parallel, and the corresponding portion of the front end of the annular fabric W is supported by the support plate 90. It is pushed into the crotch of the insertion finger 91 by the rear end portion of the insertion finger 91, and is similarly formed into an S-shape by bending twice. At this time, the annular rubber G is pushed up onto the support plate 90 as the insertion finger 91 descends.

Further, as shown in FIGS. 14A to 14C, the initial processing device 14 and the lifting pin device 23 of the left reversing guide 3.
And begin to operate in parallel with each other. First, FIG.
As shown in (a), the lifting pin device 23 is lifted to lift the annular rubber G and the annular material W (the upper free roller 22
It is preferable that the gripper portion 128 of the initial processing device 14 is lowered, the gripper portion 128 is moved forward, and the gripper portion 128 holds the annular material W and the annular rubber G in this order. The above-described ascending by the elevating pin device 23 is a pretreatment for easily and securely holding the annular material W and the annular rubber G by the gripper portion 128.

At this time, the submerged plate 71 (see FIG. 11) of the upstream fabric edge holding device 10, the insertion finger 91 (see FIG. 13) of the downstream fabric edge holding device 11, and the air pressing portion 155. Compressed air is blown from each of the above (see FIG. 12) and the like, and the annular material W is fed to the belt driving means 41 of the second feeding section 7.
(See FIG. 6) or swims in a streamer shape (stretches wrinkles) toward the rear of the sewing device to perform fabric judgment.

In this state, as shown in FIG. 14 (b), the lifting pin device 23 is lowered and turned. In addition,
At this time, the upstream and downstream dough edge holding devices 10, 1
When the setup operation by 1 is not completed, these are prioritized and the completion is waited for. And XY
The left-right moving table 37 of the drive table 19 (see FIG. 1) moves to the left, and the initial processing device 14 as a whole moves to the left as shown in FIG. 14 (c). As a result, as shown in FIG. 16A, the annular material W and the annular rubber G sandwiched by the initial processing device 14 (gripper part 128) are pulled out to the downstream side of the sewing machine 1.

When the left / right moving table 37 is moved to the left, the upstream material edge holding device 10 is also moved to the left together, so that the annular material W is folded back by the support plate 70 and the descending plate 71. The state in which the ring-shaped rubber G is sandwiched in the inside of the ring-shaped rubber G can be brought closer to the downstream fabric edge holding device 11. From this, between the downstream side fabric edge holding device 11 and the initial processing device 14 separated from this,
And, the folded state of the annular material W is to be determined between the downstream side fabric edge part holding device 11 and the upstream side fabric edge part retention device 10 (the fold line is properly attached and the annular material is annular in the folded part). Put the rubber G straight through.)

When the left and right moving table 37 is moved to the left, not only the upstream side fabric edge part holding device 10 but also the second feeding part 7,
The third feeding portion 8, the right reverse guide 4 and the like are also moved leftward (the illustration is omitted in FIG. 16A).
At this time, a large amount of slack is generated in the annular material W and the annular rubber G, particularly due to the right inverting guide 4 moving to the left. Therefore, in this case, the tension adjusting portion 15 (see FIG.
The lower free roller 32 of (see) is lowered.

Next, the presser foot 21a is lowered in the sewing machine 1 and the annular material W is sandwiched. After that, the lifting pin device 23 and the initial processing device 14 return to their respective reset states. Further, the left and right moving table 37 of the XY driving table 19 is returned to the right, and along with this, the upstream side material end portion holding device 10, the second feeding portion 7, the third feeding portion 8, the right reversing guide 4 and the like are also provided. Move back to the right. At this time, in the second feeding section 7, the guide cylinder 40 (see FIG. 6) is rotated counterclockwise in synchronization with the movement amount.

Next, as shown in FIG. 16 (b), the first feeding portion 6 (see FIGS. 2 and 3) approaches the upper free roller 22, and the annular material W and the annular rubber are provided between them. While G is sandwiched, compressed air is blown out from the air pressing portion 158, and the annular material W with respect to the upper free roller 22.
And ensure that the annular rubber G is wrapped around. Further, the swinging mechanism 51 of the third feeding portion 8 (see FIG. 6) swings, and the drum 52 moves with respect to the support plate 70 of the upstream material edge holding device 10.
Are brought close to each other, and the annular material W is sandwiched between them.

As a result, the driving force can be transmitted to the annular material W and the annular rubber G in the material feeding direction and the direction (front-back direction) orthogonal thereto. Further, as described above, the upstream fabric edge holding device 10 has already been used.
Compressed air is blown out from the submarine plate 71, the air pressing portion 155, and the like. Therefore, as shown in FIG. 12, in the annular material W, the rear portion that does not engage with the support pins 64 a to 64 d of the right inverting guide 4 is the belt driving means 41 of the second feeding portion 7.
It is being pressed against. Therefore, also in this case, the driving force can be transmitted to the annular material W in the material feeding direction and in the direction (front-back direction) orthogonal thereto.

Then, as shown in FIG. 16B, the lower free roller 32 of the tension adjusting portion 15 is raised. After these settings are completed, the automatic sewing by the sewing machine 1 and the first, second and third feeding portions 6, 7, 8 synchronized with the material feeding claw mechanism (not shown) provided on the sewing machine 1 itself. Feeding of the dough is started.

During sewing, the upstream side fabric end portion holding device 10, the second feeding portion 7, the third feeding portion 8 and the like are controlled by the position control device having the pull-in control portion and the folding width control portion to form an annular shape. As described above, the deviation of the folded shape of the cloth W is prevented. In addition, as described above, the front end portion of the annular cloth W on which the folded-back portion is formed (the portion on which the urging force in the diameter reducing direction by the annular rubber G acts) is
It is hung on the support pins 64a to 64d of the right inversion guide 4. That is, it is in a state of being lifted from the belt driving means 41 of the second feeding section 7. Therefore, it becomes easy to perform control by the position control device.

The annular material W is sewn by the sewing machine 1 while the folded shape is maintained in the predetermined state as described above, but the sewing start position is the lowermost support pin 64d in the right reversing guide 4 (see FIG. 6 and FIG. 15 (a)), the sewing of the sewing machine 1 and the feed by the cloth feed pawl mechanism and the feed by the first, second and third feed portions 6, 7, 8 are synchronized. Will be slowed down.

The right reversing guide 4 is provided with each support pin 6
4a to 64d, 180 as shown in FIG.
Rotation and retreat sliding as shown in FIG. 15 (b) are performed, and the ring-shaped cloth W and the ring-shaped rubber G are removed from the right-side inversion guide 4.
Remove. Therefore, the annular cloth W and the annular rubber G have a higher degree of engagement with the second feeding portion 7 (FIG. 16).
(C)).

The first reason for performing the above operation in the right reversing guide 4 is that the difference in circumferential length between the annular material W and the annular rubber G is cumulatively pushed to the unsewn portion. If the sewing is continued as it is, wrinkles will occur, which is to prevent this. The second reason is that
This is to prevent the sewing start position of the annular material W from being caught by the support plate 70 of the upstream material edge holding device 10 and being unable to return to the sewing machine 1.

In this embodiment, in order to prevent the annular material W and the annular rubber G from coming off from the second feeding portion 7, the lower two support pins 64c and 64d are rotated and retracted first. After sliding, the upper two support pins 64a and 64b are rotated and retracted.
Then, while the second and third feeding portions 7 and 8 are in the non-driving state, sewing of the sewing machine 1 and feeding by the material feeding pawl mechanism and feeding by the first feeding portion 6 are performed in synchronization with this. Meanwhile, the left and right moving table 37 of the XY drive table 19 (that is,
The upstream fabric edge holding device 10 and the second and third feeding portions 7 and 8 are moved to the left).

After the left and right moving table 37 of the XY drive table 19 reaches the left limit position, the sewing by the sewing machine 1 and the feeding by the material feeding pawl mechanism and the feeding by the first feeding portion 6 are once stopped. Then, the upstream side fabric end holding device 10 advances the support plate 70 and retracts and raises the submarine plate 71 (reverse operation to the motion shown in FIG. 11) to release the annular fabric W. In addition, in parallel with these or in succession,
The lower free roller 32 of the tension adjusting unit 15 descends again to maintain the tension acting on the annular material W and the annular rubber G.

After that, the left and right moving table 37 of the XY drive table 19 returns to the right. At this time, the guide cylinder 40 (see FIG. 6) of the second feeding section 7 makes a right rotation in synchronization with this,
The tension of the annular material W and the annular rubber G is maintained. next,
The support plate 70 again moves backward (projects to the annular material W side) in the upstream material edge holding device 10 (see FIG. 11). Then, at least the folding width control unit in the position control device,
While controlling the belt driving means 41 (see FIG. 15 (b)) of the second feeding portion 7 so as to match the material edge position with the predetermined advance position (while preventing deviation of the folded shape of the annular material W and wrinkling). ), Sewing by the sewing machine 1 and feeding by the material feeding claw mechanism, and the first, second and third feeding portions 6,
Feeding by 7 and 8 is restarted.

In the sewing machine 1, after it is detected that the circular cloth W has been sewn once, all the components are returned to the initial setting positions / states, and the thread trimming mechanism of the sewing machine 1 ( (Not shown) operates. Finally, the material removing device 94 (see FIG. 8) causes the pushing back piece 121 to project rearward, and the belt driving means 4 of the second feeding portion 7
1 (see FIG. 15 (b)) drives backward to push out the annular material W after sewing.

The present invention is not limited to the above embodiment. For example, in the annular material W, the material quality, the sewing shape, the sewing location, the sewing purpose (points for putting rubber, etc.) are not limited in any way. In addition, the cloth itself is not limited to the ring shape and the clothes itself.

The fabric feed control and position control are not limited to those required in combination with the sewing work. The folded portion may be bent once (J-shaped), folded three times or more. The structure, mechanism, driving tool, and the like described in each component are not limited at all, and can be appropriately replaced with conventionally known ones.

[0070]

In the dough feeding control method according to the present invention, compressed air is blown to the dough feeding portion from the outside of the dough, or a suction action is generated inside the dough feeding portion, The dough is held in contact with the feeding part. Therefore, it is not necessary to apply tension to the fabric as a whole, and naturally, a roller for this purpose is not particularly necessary. Therefore, it is not necessary to reset the mutual interval of the rollers for each different size of the cloth, and it is possible to easily deal with the lot change and the like. Further, there is an advantage that the versatility of the device can be obtained even when the difference in size of the cloth is large. Of course,
It is possible to maintain the material feeding even for the material having no annular shape.

In the dough position control device according to the present invention, in performing the above-mentioned control, only the air pressing part is attached to the dough feeding part.
The advantages are small size and easy control.

[Brief description of drawings]

FIG. 1 is a front view showing the entire sewing device.

FIG. 2 is a perspective view showing a first feeding unit and a left reversing guide.

FIG. 3 is an enlarged view of an essential part showing an operating state of a first feeding section.

FIG. 4 is a perspective view showing a tension adjusting unit.

FIG. 5 is a perspective view showing an XY drive base.

FIG. 6 is a perspective view showing a second feeding portion, a third feeding portion, and a right reverse guide.

FIG. 7 is a perspective view showing an upstream fabric edge holding device.

FIG. 8A is a perspective view showing a downstream fabric edge holding device, a sagging drop prevention device, a floating prevention device, and a fabric removal device, and FIG. It is a perspective view.

FIG. 9 is a perspective view showing an initial processing device.

FIG. 10 is a side view showing a gripper portion.

FIG. 11 is a side view showing the operating states of the upstream fabric edge holding device and the position control device.

FIG. 12 is a side view showing how the annular material is engaged with the second feeding portion and the right-side turning guide.

FIG. 13 is a side view showing an operation state of the downstream fabric edge holding device.

14A and 14B show an operation of linking a lifting pin device of a left reversing guide and a gripper portion of an initial processing device, in which FIG. 14A is a front view, FIG. 14B is a plan view, and FIG. 14C is a front view. .

FIG. 15 is a view showing an operating condition of the right-side-up guide,
(A) is a front view and (b) is a side view.

FIG. 16 is an operation outline explanatory diagram of the entire sewing device.

FIG. 17 is a diagram illustrating a situation in which annular rubber is sewn into the waist of pants.

FIG. 18 is a diagram illustrating a conventional situation in which annular rubber is sewn into a waist portion of pants.

[Explanation of symbols]

 1 Sewing Machine 3 Left Reversing Guide 4 Right Reversing Guide 6 1st Feeding Part 7 2nd Feeding Part 8 3rd Feeding Part 10 Upstream-side Fabric End Holding Device 11 Downstream-side Fabric End Holding Device 14 Initial Processing Device 15 Tension Adjusting Unit 155 Air pressure part W Ring material G Ring rubber

Claims (2)

[Claims] 1. At least one dough feeding part (6) (7) for transmitting a feeding drive to the dough (W), by blowing compressed air to the dough feeding part (6) (7) or from the dough feeding part. Is performed to hold the material (W) in a state capable of transmitting the driving force, and hold the material (W). 2. At least one dough feeding part (6) (7) for transmitting a feeding drive to the dough (W), and an outer contact position of the dough (W) with respect to the dough feeding parts (6) (7). A fabric feeding control device having an air pressing part (155) for blowing compressed air from the device.