KR101553263B1 - Loop material feed apparatus - Google Patents

Abstract

It is possible to prevent wrinkles from being generated in the sewing main body to which the loop material is sewn and to securely supply the loop material to the intended position so that occurrence of sewing failure in the case of sewing the loop material to the sewing main body prevent.

The loop re-supply device 1 includes a fitting support means 3, a fitting pressure changing means 12 for changing the fitting pressure at which the fitting member 3 supports the loop member 20, Means (17). The control means 17 performs control to set the fitting pressure in the fitting pressure changing means 12 in accordance with each feeding step for feeding the loop material 20 to the sewing machine 2 for sewing the belt loop , It is possible to set the fitting pressure by the control means (17) in a state in which the loop fitting support position is movable at least and a state in which the loop fitting support position is not movable when the loop member (20) is moved and sewn.

Description

[0001] LOOP MATERIAL FEED APPARATUS [0002]

The present invention relates to a loop material supplying apparatus for supplying a loop material to a sewing position of a sewing machine for sewing a loop material constituting a belt loop to a sewing object body.

Conventionally, for example, in order to form a belt loop for inserting a belt into various kinds of sewing bodies such as waist portions of trousers or skirts, waist portions or sleeves of a court, a tape material having a long length is supplied to the sewing position of the sewing machine Is provided in the sewing machine.

Such a loop re-feeding device has a fitting support means for fitting and holding the loop material and by moving the fitting means while holding a predetermined portion of the loop material at a constant fitting pressure by the fitting means, And is arranged or bent at a sewing position of the sewing machine.

For example, as shown in Fig. 11, the loop material 20 is sewn on the sewing body 21 so that one end portion 20a is bent in a Z-shape and the other end portion 20b is bent in a U-shape Is known. In this case, the loop material 20 is stitched on the sewed body 21 by a sewing step as shown in Figs. 12 (a) to 12 (h).

First, the fitting support means 3, in which the vicinity of the longitudinal one end portion 20a of the loop material 20 is fitted, moves so that the one end portion 20a is positioned at the sewing position of the sewing machine )).

12 (b), the pusher 23 of the sewing machine is lowered and the one end 20a is pushed, and the fitting support means 3 is moved upward in the left direction of the one end 20a ). In this movement, since the one end portion 20a is pressed by the pushbutton 23, the fitting holding means 3 moves while slipping the loop member 20. Thus, the loop fitting support position of the fitting support means 3 in the loop member 20 moves from the one end portion 20a to the other end portion 20b. In this state, the sewing machine sews one end 20a of the loop material 20 to the sewing body 21 (first sewing).

After the first sewing, as shown in Fig. 12 (c), the pusher 23 is lifted and the fitting holding means 3 holding the other end portion 20b in the right direction (in the direction of the arrow B) (The first needle stitch) by the needle stitch. Thereby, the loop material 20 is folded so as to cover the first needle sweat.

Next, the fitting support means 3 is lowered to put the loop material 20 in a state of being superimposed on the main body 21 of the sewing body, and then the pusher 23 ) Is lowered to form a second needle sweat in the vicinity position (Fig. 12 (d)). Then, after the pusher 23 is lifted again, the fitting holding means 3 moves again in the upper left direction (the direction of the arrow C) of the one end portion 20a (Fig. 12 (e)). Thereby, the loop material 20 is folded so as to cover the second needle sweat, and one end 20a is bent in a Z-shape.

12 (f)). Thereafter, the fork member 25 moves between the fork-shaped support portions 25a so as to sandwich the vicinity of the other end portion 20b which is held by the fitting means 3 (Fig. 12 (f) , And the fork member 25 is rotated such that the other end portion 20b is bent in a U-shape (Fig. 12 (g)). Immediately before the rotation of the fork member 25 is completed, the other end 20b is pulled out from the fitting holding means 3 and released (Fig. 12 (g)).

Then, the fork member 25 is pulled out from the other end portion 20b, and the pusher 23 presses in the vicinity of the other end portion 20b as shown in Fig. 12 (h) to perform sewing (third sewing).

[Patent Document 1] Japanese Patent Application Laid-Open No. 2007-117770

12 (a) and in the process of rotating the fork portion in Fig. 12 (g) in each of the above-described supplying processes of supplying the loop material 20 to the sewing machine, It is necessary to securely support the loop material 20 by the support means 3. [ 12 (b), (c) and (e), it is necessary to move the loop member while sliding the slider.

However, in the conventional loop re-feed device, since the fitting pressure of the fitting means 3 is constant, it is not possible to obtain the optimum fitting pressure in each of the above-mentioned feeding processes.

Therefore, in the sewing operation of the sewing machine for sewing the loop material 20 to the sewing main body 21, the loop from the fitting means 3 to the loop main body 21, There is a problem that the ash 20 is released.

On the other hand, when the fitting support pressure for the loop member 20 by the fitting support means 3 is strong, when the loop fitting support position is moved while the loop member 20 is held by the fitting support means 3 , There is a problem that the sewing body 21 to be sewn on the loop material 20 is pulled and wrinkled.

In addition, if the thickness of the loop material 20 and the elasticity of the material are different, the optimum fitting pressure varies, and the loop material 20 can not be reliably supplied at the set fitting pressure.

This problem may cause wrinkles in the sewing main body 21 to be sewn on the loop material 20 or sewing the loop material 20 in an intended position, .

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a sewing machine for sewing a loop material to a loop sewing machine, .

In order to attain the above object, a loop re-supply device according to claim 1 of the present invention is characterized by comprising: fitting support means for fitting and holding a loop member constituting a belt loop; A loop supply device for a sewing machine for sewing a belt loop, comprising: moving means for moving said fitting means to move said belt loop; and control means for controlling at least said fitting means and said moving means, And a control means for controlling the pressing force of the adjusting means in accordance with each feeding step of feeding the loop material to the sewing machine for sewing the belt loop, The control means controls the fitting pressure changing means to change the fitting pressure changing means.

The fitting pressure changing means is controlled so as to change the fitting pressure according to each of the supplying steps, so that it is possible to provide the optimum fitting pressure in each of the supplying steps. Thus, the loop reinfeeding apparatus can prevent the loosening of the loop material from being released by the fitting holding means during the sewing operation of the sewing machine. Especially when a loop material made of a material having high elasticity is used, It is possible to prevent looseness from being released from the fit-in support. In addition, since the loop member can smoothly slide relative to the fitting support means when the loose fitting position is shifted by the fitting support means while the loop member is held by the fitting support means, the loop member pulls the sewed- Can be prevented.

The loop re-supply device according to claim 2 is characterized in that, in the loop re-supply device according to the invention of claim 1, the fitting pressure changing means changes the fitting pressure to a value that the fitting- It is possible to set the fitting pressure for slidably fitting the ashes and the fitting pressure for fitting the loop material so that the fitting member can slide non-slidably.

According to the invention recited in claim 2, the loop re-feed device can reliably prevent the loosening of the loop material from being released by the fitting means during the sewing operation of the sewing machine, and in particular, It is possible to prevent the loop member from being loosened off the fitting support by the fitting and holding means. In addition, since the loop member can smoothly slide relative to the fitting support means when the loop fitting support position is moved by the fitting support means while the loop member is held by the fitting support means, It is possible to reliably prevent wrinkles from being pulled out.

According to the invention as set forth in claim 3, the fitting pressure changing means changes the pressure value of the fitting pressure to a weak pressure value that the fitting support means slidably fits the loop member, The support means can set the reference pressure value for supporting the loop member in a non-slidable manner and the intermediate pressure value between the weak pressure value and the reference pressure value.

According to the invention as set forth in claim 3, the fitting pressure of the loop material can be adjusted in detail in accordance with the sewing step of the loop material, so that the loop material can be smoothly bent and the quality of the sewed product can be improved.

The loop re-supply device according to claim 4 is characterized in that, in the loop re-supply device according to the invention of any one of claims 1 or 3, the control means further comprises: The fitting pressure can be set so that at least one of the sliding speed and the sliding amount can be adjusted.

According to the invention as set forth in claim 4, the loop re-feed device can more reliably prevent the loose fitting of the loop material from being released by the fitting means during the sewing operation of the sewing machine, It is possible to prevent the loop material from being loosened off the fitting support by the fitting and holding means when the ash is used. In addition, since the loop member can smoothly slide relative to the fitting support means when the loop fitting support position is moved by the fitting support means while the loop member is held by the fitting support means, It is possible to reliably prevent wrinkles from being pulled out.

Further, a feature of the loop re-feed device according to the invention recited in claim 5 is that, in the loop re-feed device according to the invention of any one of claims 1 to 3, the fork member having a pair of supports is provided, In the step of folding the end portion of the loop member and separating the end portion from the fitting and holding means by supporting the end portion of the loop member by the pair of supporting portions and rotating the fork member, The fitting pressure of the fitting means immediately before the rotation of the member is terminated is changed so that the fitting portion becomes weaker than the fitting pressure of the fitting means when the loop member is fitted, Means for controlling the means.

According to the fifth aspect of the present invention, since the fitting pressure immediately before the rotation of the fork member is finished is made weaker than the fitting pressure of the fitting support member when the loop members are fitted, It can be easily separated from the fitting support means. It is also possible to prevent the loose material from loosening or deviating from the fit-in support means by making the fit-in support pressure at the time of fitting the loop member to both support portions stronger than the fit-in support pressure immediately before the rotation of the fork member is completed. As a result, the loop re-feeding device can reliably supply the loop material to the intended position, so that the sewing machine can prevent the occurrence of sewing defects when the loop material is sewn on the sewing object body, It can be sewn.

Further, a feature of the loop re-supply device according to the invention recited in claim 6 is that, in the loop re-supply device according to any one of the first to third aspects of the invention, And a storage means in which the value is stored.

According to the sixth aspect of the present invention, in accordance with the respective supplying steps, the loop member is fitted and held by the fitting support means in accordance with the fitting support pressure stored in the memory means, whereby the loop member Fit condition can be provided.

According to a seventh aspect of the present invention, there is provided a loop supply apparatus according to the sixth aspect of the present invention, wherein the loop supply apparatus comprises: .

According to the invention described in Claim 7, by operating the operating means, it is possible to change the fitting support pressure stored in the memory means to an arbitrary pressure value. This allows the operator to change the fitting pressure value in consideration of various conditions such as the material of the loop material, for example, to move the loop fitting support position in the loop material more smoothly and reliably prevent the sewing object body from coming in At the same time, it is possible to prevent loosening of the loop material, and more reliably supply the loop material to an intended position.

The loop re-supply device according to an eighth aspect of the present invention is the loop re-supply device according to the sixth aspect of the present invention, further comprising detection means for detecting a thickness dimension of the loop member, And the control means corrects the value of the fitting support pressure stored in the storage means in consideration of the thickness dimension of the loop member detected by the detection means.

According to the eighth aspect of the present invention, the detecting means detects the thickness dimension of the loop member which is held by the fitting holding means, and detects the fitting pressure stored in the memory means with the optimum thickness It can be corrected by the fitting pressure. As a result, the loop member can smoothly slide relative to the fitting support means when the loop fitting support position is moved by the fitting support means while the loop member is held by the fitting support means. Therefore, It is possible to reliably prevent the loop material from loosening and to supply the loop material to the intended position more reliably.

Further, a feature of the loop re-supply device according to the invention recited in claim 9 is that, in the loop re-supply device according to the invention according to claims 1 to 8, the fitting pressure changing means is an electropneumatic regulator.

According to the ninth aspect of the present invention, by using the electropneumatic retractor as the fitting pressure changing means, it is possible to surely change the fitting pressure with respect to the loop material by the fitting holding means in accordance with each feeding step.

The loop re-supply device according to claim 10 is characterized in that, in the loop re-feed device according to the invention of claims 1 to 8, the fitting pressure changing means includes a plurality of pressure reducing valves Is a pneumatic circuit that is assembled.

According to the invention described in claim 10, by using the pneumatic circuit as the fitting pressure changing means, it is possible to reliably change the fitting pressure with respect to the loop material by the fitting holding means in accordance with each feeding step.

As described above, according to the loop re-supply device of the present invention, when the loop fitting support position by the fitting support means is moved while the loop fitting is held by the fitting supporting means, the loop member is smoothly It is possible to prevent wrinkles from being generated by pulling the main body of the sewed loop body from the loop material. Further, since the loop re-supply device can prevent the loop material from loosening, it is possible to reliably supply the loop material to an intended position. As a result, in the sewing machine supplied with the loop material by the loop re-supply device, the occurrence of sewing defects when the loop material is sewn on the sewing object body is prevented, and a high quality loop material is sewn on the sewing object body There is a number.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a loop feeder according to the present invention will be described with reference to Figs. Here, the same components as those of the conventional loop re-feeding device will be described using the same reference numerals.

Fig. 1 is a perspective view showing a sewing machine for sewing and attaching a loop material supplying device according to the present embodiment and a loop material supplied by the loop material supplying device to a sewing object body. Fig. 2 is a perspective view Fig.

1 and 2, the loop feeder 1 according to the present embodiment includes a loop member 20 for feeding a loop member 20 constituting a belt loop to the sewing machine 2 (3).

The fitting support means 3 has a first fitting support member 5 abutting on the upper face of the loop member 20 and a second fitting support member 6 abutting on the lower face of the loop member 20, And the loop member 20 is inserted and supported by the support member 5 and the second fitting support member 6. [ The first fitting support member 5 includes a support portion 5a formed in a flat plate shape and a pressing portion 5b protruding downward in the direction of the second fitting support member 6 at the tip end of the supporting portion 5a, And an attachment portion 5c which is erected on the other end portion of the support portion 5a so as to have an L-shaped side surface. An auxiliary member 5d is attached to the upper surface of the support portion 5a by a fixing screw 5e and the tip end portion of the auxiliary member 5d is located at the tip end side of the pressing portion 5b, And is formed so as to protrude in the direction of the member 6 so as to press the loop member 20 together with the pressing portion 5b. The auxiliary member 5d is attached so that the tip end portion extends in a direction in which the tip end portion protrudes from the tip end side of the pressing portion 5b.

The second fitting support member 6 is formed in a flat plate shape so as to be opposed to the lower surface of the tip end portion of the pressing portion 5b and the auxiliary member 5d in the first fitting support member 5, One end 6a of the support member 6 is fixed to a flat plate-like frame member 7 disposed below the first fitting support member 5. [

An air cylinder 9 is attached to the fitting support means 3 as a driving means for driving the first fitting support member 5 and the second fitting support member 6 in a direction in which they are brought into contact with and separated from each other, The cylinder body 9a of the air cylinder 9 is attached to the attachment portion 5c of the first fitting support member 5 and the tip end portion of the cylinder rod 9b of the air cylinder 9 is fitted to the attachment portion 5c of the frame member 7 And is attached to the upper surface.

As shown in Fig. 3, the air cylinder 9 is connected to a pneumatic circuit 11 for supplying pressure to the air cylinder 9. As shown in Fig. The pneumatic circuit 11 includes an electropneumatic regulator 12 capable of adjusting the pressure supplied to the air cylinder 9 by an electric signal and a three-way valve 12 for selecting the moving direction of the cylinder rod 9b. And a pressure reducing valve 15 for converting an original pressure from an air supply source to an appropriate pressure and supplying the pressure to the three-way valve 13 and the electropneumatic regulator 12. [

2, the first intervening supporting member 5 is inserted into the second intervening supporting member 6 (see FIG. 2) in a state in which the cylinder rod 9b is drawn into the cylinder body 9a, So as to support and support the loop member 20. At this time, the control means 17 for controlling the driving of each part of the loop re-feed device 1 such as the pressure reducing valve 15, the pneumatic regulator 12, the three-way valve 13 and each moving mechanism is controlled by the electropneumatic regulator 12 The air supply pressure to the air cylinder 9 can be adjusted so as to set the fitting pressure with respect to the loop member 20 of the fitting support means 3. [

Further, when the loop member 20 is moved and sewn, the control means 17 is in a state in which the loop fitting support position is movable, and further, the sliding speed of the loop member 20 with respect to the fitting support means 3, The holding pressure can be set so as to adjust at least one of the amounts.

The timing at which the control means 17 controls the electropneumatic regulator 12 is triggered by the input of a signal related to the operation of each part of the sewing machine such as the rising and falling movement of the pusher 23 and the driving of the needle And the time may be controlled and executed by a timer using an internal counter.

The sewing machine control means 19 controls the raising and lowering of the pusher 23 of the sewing machine or the driving (sewing) of the needle on the basis of a command from the control means 17. [ The sewing machine control means 19 notifies the control means 17 of the ascending and descending operations of the pusher 23 and the end of the sewing operation under the control of the sewing machine control means 19. [

The loop re-supply device 1 may supply the sewing portion of the loop material 20 to the sewing position of the sewing machine 2 or retract the non-sewing portion of the loop material 20 from the sewing position And a moving mechanism (16) for moving the fitting support means (3). The loop re-feed device 1 is provided with the moving mechanism 16 as shown in Fig. 6, in which the fitting holding means 3 is constituted by a needle bar 4 formed by sewing the loop material 20 to the sewing main body 21, And a vertical movement mechanism 16b (16) for moving the fitting means 3 in a direction (direction D in Fig. 6) A moving mechanism 16a 16 and a vertical moving mechanism 16c 16 for moving the fitting means 3 in the vertical direction with respect to the sewed body.

The control means 17 of the loop re-supply device 1 further includes a storage means 18 for storing a program or the like for each operation of the loop re- The control means 17 drives each of the moving mechanisms 16 to supply the sewing portion of the loop material 20 to the sewing position of the sewing machine 2 based on the program stored in the storage means 18 So that the fitting support means 3 is moved. When the sewing operation by the sewing machine 2 is started, the control means 17 causes the loop holding member 3 to hold the loop member 20, The moving mechanism 16 is driven to feed the sewing parts of the loop material 20 such that both end portions 20a and 20b of the loop material 20 are bent into a desired shape, As shown in Fig.

The control means 17 controls the sewing of the loop material 20 held by the fitting means 3 so that the loop material 20 is stitched on the sewing main body 21 according to a predetermined shape The air cylinder 9 is controlled by controlling the electropneumatic regulator 12 as the fitting pressure changing means for changing the fitting pressure of the fitting support means 3 in the process of supplying the portion to the sewing position in the sewing machine 2. [ So as to control the fitting pressure by the holding members 5, 6. In the present embodiment, when the loop member 20 is moved and sewed, the loop-fitted support position in the loop member 20 is at least movable and non-movable, Can be set. In the present embodiment, the control means 17 is configured so that the fitting pressure against the loop material 20 by the fitting means 3 is set so that the loop fitting position of the fitting means 3 is moved It is preferable that the fitting pressure from the start of movement of the fitting means 3 to the moment of stopping the movement of the means 3 during the movement of the fitting means 3 is within a range from immediately before stopping the movement of the fitting means 3 to stopping movement of the fitting means 3 So as to be weaker than the fit-in support pressure.

Then, the loop material 20 is fed to the sewing machine (not shown) by a loop re-feeding device 1 in such a manner that one end portion 20a is bent in a Z shape and the other end portion 20b is bent in a U- 2, and the loop material 20 is sewn on the sewing main body 21 by the sewing machine 2 (Figs. 7, 11, 12 (a) to 12 (h)).

First of all, the loop re-feeding device 1 is configured such that the moving mechanism 16 is driven by the control means 17 to move the loop member 20 in the state of being fitted in the vicinity of the one end portion 20a in the longitudinal direction, The supporting means 3 is moved so that the one end portion 20a of the loop member 20 is positioned at the sewing position of the sewing machine. 7, the control means 17 adjusts the air supply pressure to the air cylinder 9 by controlling the electropneumatic regulator 12 and controls the air supply pressure to the loop member 20 Is maintained at a predetermined pressure value (reference pressure value) for keeping the loop member 20 in a non-slidable state, that is, for making the loop fitting support position of the fitting support means 3 non-movable .

When the pusher 23 of the sewing machine is lowered and the one end 20a of the loop 20 is pressed, the end of the lowering operation of the pusher is transmitted from the sewing machine control means 19 to the control means 17, The means 17 adjusts the air supply pressure to the air cylinder 9 by controlling the electropneumatic regulator 12 so that the fitting pressure of the loop material 20 by the fitting support means 3 is weaker than the reference pressure value The loop member 20 is slidably held, that is, the loosening support position by the fitting support means 3 is controlled to be a movable pressure value (a weak pressure value). The control means 17 causes the fitting means 3 to move upward in the leftward direction of the one end portion 20a in the state in which the fitting support pressure by the fitting support means 3 is a low pressure value A direction). The loop member 20 is slid with respect to the fitting means 3 so that the loop fitting position of the fitting member 3 in the loop member 20 is set to be one end of the loop member 20 And moves near the other end 20b in the vicinity of the portion 20a.

Next, immediately before the movement of the fitting support means 3 is stopped, the control means 17 controls the fitting pressure to be a pressure value (intermediate pressure value) which is stronger than the weak pressure value and weaker than the reference pressure value. In this state, the sewing machine 2 sews one end 20a of the loop material 20 to the sewing body 21 (first sewing). The control means (17) maintains the fitting pressure by the fitting means (3) during the first sewing in a state of an intermediate pressure value. During the first sewing, the sewed body 21 and the pusher 23 move in the direction of the needle stitch formation. The loop member 20, which is held by the fitting support means 3 which can not move in this direction, In the state of the pressure value, a slight resistance is given to the fit-in support means 3, and it is held in a properly slidable state to change the loop-fit support position.

After the first sewing, the pusher 23 rises and the loop feeder 1 feeds the one end portion 20a, which is the center of the loop member 20 in the longitudinal direction, The loop material 20 carries the stitched sewing body 21 so that the loop material 20a is positioned at the sewing position of the sewing machine 2. [ At this time, the control means 17 of the loop re-feeding device 1 controls the fitting pressure to be a pressure value so that the fitting means 3, which holds the other end portion 20b, (First needle sweat) by the needle stitch. Thereby, the loop material 20 is folded so as to cover the first needle sweat. While the fitting support means 3 is moving as described above, the loop member 20 slides slightly against the fitting support means 3 so that the loop fitting support position is moved to the end of the other end portion 20b do.

The control means 17 controls the fitting pressure of the fitting means 3 to be an intermediate pressure value immediately before the movement of the fitting means 3 is stopped and then the fitting means 3 is lowered So that the loop material 20 is put on the sewing body 21. The second needle sweat is formed in the vicinity of the first needle sweat by performing the second sewing by pressing the loop material 20 down on the upper surface near the one end 20a of the loop material 20 to lower the needle material. The control means 17 controls the sewing machine 2 to sew the sewing machine body 21 in the vicinity of the one end portion 20a of the loop material 20 by means of the pusher 23, 3) maintains the holding pressure at the intermediate pressure value. During the second sewing, as in the case of the first sewing, the loop fitting support position at which the fitting support means 3 supports the loop member 20 changes.

Subsequently, the sewing machine 2 after sewing the sewing machine 2 raises the pusher 23 again, and then the loop material 20 is sewed so that the vicinity of the other end portion 20b of the loop material 20 is located at the sewing position. The water main body 21 is transported. The control means 17 of the loop re-feeding device 1 controls the fitting pressure to be a low pressure value and then moves the fitting means 3 to move the loop material 20 so as to cover the second needle- And one end 20a is bent in a Z-shape. During this movement, the loop fitting support position shifts as the loop member 20 slightly slides with respect to the fitting support means 3. [

When the predetermined time has elapsed from the instruction to move the fitting support means 3 immediately before the movement of the fitting support means 3 is stopped, the control means 17 sets the fitting pressure of the fitting support means 3 Is controlled to be an intermediate pressure value, and then the movement of the fitting support means (3) is stopped. The control means 17 moves the fork member 25 provided with the pair of supporting portions 25a arranged in parallel in the axial direction in the width direction of the loop member 20 so that the both supporting portions 25a are in contact with the loop member 20, The holding pressure is controlled to be the reference pressure value immediately before the loop member 20 is inserted so as to be positioned on both planes of the member 20.

The control means 17 rotates the fork member 25 such that the other end of the loop member 20 is bent in a U shape in a state in which the fitting pressure of the fitting means 3 is the reference pressure value, Immediately before the rotation of the fork member (25) is completed, the fitting pressure of the fitting means (3) is controlled to be a low pressure value. At this time, the loop material 20 slides with respect to the fitting holding means 3 and is released from the fitting holding means 3.

The sewing machine 2 pulls out the fork member 25 from the other end 20b of the loop material 20 and presses the other end 20b of the loop material 20 by the pusher 23 to perform sewing , And the loop material 20 is sewn on the sewing main body 21 (third sewing).

During the third sewing operation, in order to prepare the next feeding operation of the loop material 20, the control means 17 causes the loop material 20 to be inserted Moves the means (3).

The reference pressure value, the weak pressure value and the intermediate pressure value are set to optimum pressure values in accordance with the respective supplying steps of the loop material 20 obtained in advance by experiment or the like, and are stored in the storage means 18. As described above, the control means 17 controls the electropneumatic regulator 12 by the fit-in support pressure stored in the memory means 18 in accordance with each supply step so as to adjust the air supply pressure to the air cylinder 9 The loop member 20 can be fitted and supported by the fitting and holding means 3.

The loop re-supply device 1 also has an operating means 27 for inputting an instruction for the operation of each part of the loop re-supply device 1 to the control means 17, A display means 28 for displaying information on the display means 28; The operating means 27 is capable of inputting an instruction for changing the fitting support pressure stored in the storage means 18 to the control means 17 in accordance with the operation of the operator.

Further, the loop re-supply device 1 is provided with detection means 30 for detecting the thickness dimension of the loop material 20 held by the fitting means 3, and the control means 17 The fitting support pressure stored in the memory means 18 can be corrected in consideration of the thickness dimension of the loop member 20 inputted from the detection means 30. [

Next, the operation of the present embodiment will be described.

According to the present embodiment, in accordance with each supplying step of supplying the sewing portions of the loop material 20 held by the fitting holding means 3 to the sewing position of the sewing machine 2, The holding pressure of the holding members 5 and 6 can be controlled by setting the holding pressure to the electropneumatic regulator 12 (the holding pressure changing means) It is possible to provide an optimum fit-holding pressure. Thereby, the loop re-feeding device 1 can prevent the fitting of the loop material 20 by the fitting holding means 3 during the sewing operation of the sewing machine 2, It is possible to prevent loosening of the loop material 20 from the fitting support by the fitting and holding means 3 when using the loop material 20 constituted. At the same time, when the loop fitting position is shifted by the fitting support means 3 while the loop fitting 20 is being held by the fitting fitting means 3, the loop fitting 20 is fitted to the fitting fitting means 3 It is possible to prevent the loop material 20 from pulling the sewed product body 21 and causing wrinkles.

Therefore, it is possible to reliably supply the loop material 20 to an intended position by preventing the loop material 20 from loosening during the sewing of the loop material 20. As a result, in the sewing machine 2 supplied with the loop material 20 by the loop re-feeding device 1, when the loop material 20 is sewn on the sewing body 21, So that the loop material 20 of high quality can be sewn on the sewed product body 21. [

Further, in the loop re-supply device 1, it is possible to set the fitting pressure by the control means 17 in a state in which the loop fitting support position by the fitting support means 3 is at least movable and in a state in which movement is impossible It is possible to more smoothly move the loop fitting support position by the fitting support means 3 and to reliably prevent loosening of the loop member 20 during sewing of the loop member 20. [

Further, the loop re-supply device 1 is configured such that the loosening support position is movable when the loop member 20 is moved and sewed by the control means 17, By setting the fitting pressure to adjust at least one of the sliding speed and the sliding amount of the loop member 20, it is possible to provide the optimum fitting pressure in each supplying step of supplying the loop member 20. It is possible to more smoothly move the loop fitting support position by the fitting support means 3 and to ensure that the loop member 20 is loosened by firmly fitting the loop member 20 during the sewing of the loop member 20 It can be surely prevented.

The fitting pressure immediately before the rotation of the fork member 25 is finished is made weaker than the fitting pressure when both the supporting portions 25a are fitted with the loop member 20, Can be easily separated from the means (3). It is also possible to make the fitting pressure when both the support portions 25a fit the loop member 20 stronger than the fitting support pressure just before the rotation of the fork member 25 is finished, It is possible to prevent the loop material from loosening or deviating from the fitting holding means 3. [ This allows the loop re-feed device 1 to reliably supply the loop material 20 to an intended position. Thus, when the loop material 20 is sewn on the sewing body 21, The loop material 20 of high quality can be stitched on the sewed product body 21 by preventing defects from occurring.

Since the optimum fitting pressure according to each feeding step of the loop material 20 by the loop re-feeding device 1 is stored in the memory means 18, the loop re- The loop member 20 is fitted and held by the fitting support means 3 in accordance with the fitting pressure stored in the memory means 18 according to the process so that the fitting condition of the loop member by the fitting fitting means, Can be provided.

Further, in the loop re-supplying device 1, the fitting support pressure stored in the memory means 18 can be changed to a certain pressure value by operating the operating means 27. [ Thus, the operator can change the fitting pressure in consideration of various conditions such as the material of the loop material 20, for example, to more smoothly move the loop fitting support position by the fitting support means 3, It is possible to reliably prevent wrinkles and prevent loosening of the loop material 20 during sewing of the loop material 20, thereby more reliably supplying the loop material 20 to an intended position.

The loop re-supply device 1 detects the thickness dimension of the loop material 20 held by the fit-in holding means 3 through the detecting means 30, The support pressure is corrected to the optimum fit support pressure calculated in consideration of the detected thickness dimension. Thus, the loop re-feeding device 1 can more smoothly move the loop-fitted position by the fitting means 3 to reliably prevent the sewing body 21 from coming in contact with the loop member 20, It is possible to prevent loosening of the loop material 20 during the sewing of the loop material 20 and to more reliably supply the loop material 20 to an intended position.

Next, a second embodiment of the present invention will be described with reference to Figs. 8 and 9. Fig. Here, the same components as those of the first embodiment described above with respect to the second embodiment will not be described in detail, and the same reference numerals will be used to describe them.

8 is a perspective view showing the fitting support means 3 in the loop feeder 1 according to the second embodiment. As shown in Fig. 8, The loop member 20 is sandwiched and supported by the first fitting support member 31 abutting on the bottom surface of the loop member 20 and the second fitting member 32 abutting on the bottom surface of the loop member 20. [ The first fitting support member 31 has a support portion 31a formed in a flat plate shape and a first pressing portion 31b protruding from the tip end of the support portion 31a in the direction of the second fitting support member 32. The second fitting support member 32 includes a second pressing portion 32a disposed to face the first pressing portion 31b and a second pressing portion 32b extending from one end of the second pressing portion 32a to the support portion 31a And a side surface shape having a frame portion 32b formed so as to protrude from the frame portion 32b and an attachment portion 32c provided upright on the frame portion 32b is formed in a T shape.

The two support shafts 33 protrude in the direction of the support portion 31a from the frame portion 32b of the second fitting support member 32 to the support portion 31a of the first fitting support member 31 And through holes through which the two support shafts 33 are inserted are formed at positions opposed to the two support shafts 33 in the support portion 31a of the first fitting support member 31. [ The first fitting member 31 is movable along the two supporting shafts 33 in a direction in which the first fitting member 31 contacts and separates from the second fitting member 32.

A first spring 36 is interposed between the support portion 31a of the first fitting support member 31 and the frame portion 32b of the second fitting support member 32, The first spring 36 urges the first pressing portion 31b of the first fitting support member 31 in the direction away from the second pressing portion 32a of the second fitting support member 32, So that the member 31 is pressed.

The attachment portion 32c is provided with a stepping motor 37 as a drive means for driving the first fitting member 31 in a direction in which the first fitting member 31 is contacted with and separated from the second fitting member 32. [ A cam 39 disposed on the motor shaft 37a of the stepping motor 37 via a second spring 38 is attached above the first fitting support member 31. [

When the second spring 38 is in a free length state in which the second spring 38 is not pressed by the cam 39, the fitting support means 3 is pressed against the first pressing portion 31b by the urging of the first spring 36 So as to be spaced apart from the second pressing portion 32a. The fitting support means 3 is rotated by the stepping motor 37 and the cam 39 is rotated and pressed by the second spring 38 compressed by the cam 39, The first fitting member 31 moves in the direction of the second fitting member 32 along the two supporting shafts 33 against the urging of the first spring 36 as shown. The amount by which the cam 39 compresses the second spring 38 changes in accordance with the rotational phase of the stepping motor 37 even when the first pressing portion 31b is in contact with the second pressing portion 32a, The pressing force of the first pressing portion 31b is changed by the pressing force of the second pressing portion 32a so that the rotational phase of the stepping motor 37 is controlled so that the loop member 20 It is possible to change the fitting pressure for the fitting.

The control means 17 controls the stepping motor 37 to change the fitting pressure of the fitting means 3 in each supplying step so as to adjust the amount of compression of the second spring 38, So as to control the fitting pressure by the fit-in support members 31, 32. The control means 17 of the present embodiment controls the fitting pressure of the loop member 20 by the fitting means 3 so that the loop fitting support position of the fitting means 3 moves, When the fitting pressure from the start of movement of the fitting means 3 to the moment of stopping the movement of the fitting means 3 when moving the fitting means 3 is stopped before the fitting means 3 stops moving, So as to be weaker than the fitting pressure.

Hereinafter, the operation of the present embodiment will be described.

The control means 17 can control the sewing position of the sewing machine 2 in accordance with each feeding step of feeding the sewing portions of the loop material 20 held by the fitting means 3 to the sewing position. Since the stepping motor 37 is rotationally driven in accordance with the instruction from the first spring 38 and the fitting pressure is set to the second spring 38 to control the fitting pressure by the fitting members 31 and 32, It is possible to provide an optimum fitting pressure in each of the supply processes. Thus, the loop re-feeding device 1 can prevent the fitting of the loop material 20 by the fitting holding means 3 during the sewing operation of the sewing machine 2, It is possible to prevent loosening of the loop material 20 when the loop material 20 is sewn by loosening the fitting of the loop material 20 by the fitting and holding means 3. [ The loop member 20 slides relative to the fitting support means 3 when the loop fitting support position by the fitting support means 3 is shifted while the loop member 20 is held by the fitting support means 3 It is possible to prevent the loop material 20 from pulling the sewed product body 21 and causing wrinkles.

Therefore, it is possible to reliably supply the loop material 20 to an intended position by preventing the loop material 20 from loosening during the sewing of the loop material 20. As a result, in the sewing machine 2 supplied with the loop material 20 by the loop re-feeding device 1, when the loop material 20 is sewn on the sewing body 21, So that the loop material 20 of high quality can be sewn on the sewing body 21. [

Next, a third embodiment according to the present invention will be described with reference to Fig. The same components as those of the first and second embodiments are denoted by the same reference numerals, and a detailed description thereof will be omitted.

10, the loop feeder 1 according to the third embodiment is connected by a pneumatic circuit 11 for supplying air to the air cylinder 9, and the pneumatic circuit 11 And a plurality of pressure reducing valves 41 capable of adjusting an air supply pressure supplied to the air cylinder 9 in accordance with an electric signal. Since the pressure reducing valve 41 is required to be equal in number to the set number of required air supply pressures, and in this embodiment, three sets of air supply pressures, i.e., a reference pressure value, an intermediate pressure value, The set pressure value of the first pressure reducing valve 41a (41) is set to the reference pressure value and the set pressure value of the second pressure reducing valve 41b (41) is set to the intermediate pressure value, The set pressure value of the third pressure reducing valve 41c (41) is fixedly set to a weak pressure value.

The pneumatic circuit 11 has a first solenoid valve 42a (42) for selecting the moving direction of the cylinder rod 9b. The first solenoid valve 42a A second solenoid valve 42b for supplying the air to the air cylinder 9 through the solenoid valve 42a and a second solenoid valve 42b for supplying an intermediate pressure value or a pressure value of a low pressure value by the second pressure reducing valve 41b or the third pressure reducing valve 41c And a third solenoid valve 42c for supplying air to the air cylinder 9 through the first solenoid valve 42a.

The control means 17 controls the switching of the respective pressure reducing valves 41 to the second electromagnetic valve 42b or the third electromagnetic valve 42c to adjust the air supply pressure to the air cylinder 9, So as to set the fitting pressure with respect to the loop material (20) by the support means (3). That is, the control means 17 controls the first solenoid valve 42a by switching the second solenoid valve 42b to the first pressure reducing valve 41a of high pressure so that the cylinder rod 9b is moved to the inside of the cylinder body 9a And the loop holding member 20 is fitted and supported by the fitting holding means 3 in accordance with the reference pressure value. Further, after the loop member 20 is fitted, the control means 17 further sets the second solenoid valve 42b or the third solenoid valve 42c to the intermediate pressure second pressure reducing valve 41b or the low pressure And the first solenoid valve 42a is switched by switching to the third pressure reducing valve 41c to adjust the fitting pressure of the fitting support means 3 to an intermediate pressure value or a weak pressure value.

The control means 17 can control the sewing position of the sewing machine 2 in accordance with each supplying step of supplying the sewing portions of the loop material 20 held by the fitting holding means 3 to the sewing position, It is possible to control the fitting pressure by the double-piece supporting members 5 and 6 by switching the fitting pressure by the pressure reducing valve 41 in accordance with the instruction from the pressure adjusting valve 41. Therefore, . ≪ / RTI > Thus, the loop re-feeding device 1 can prevent the fitting of the loop material 20 by the fitting holding means 3 during the sewing operation of the sewing machine 2, It is possible to prevent loosening of the loop material 20 when the loop material 20 is sewn by loosening the fitting of the loop material 20 by the fitting and holding means 3. [ The loop member 20 slides relative to the fitting support means 3 when the loop fitting support position by the fitting support means 3 is shifted while the loop member 20 is held by the fitting support means 3 Therefore, it is possible to prevent the loop material 20 from pulling the sewed product body 21 and causing wrinkles.

Therefore, it is possible to reliably supply the loop material 20 to the intended position by preventing the loop material 20 from loosening during the sewing of the loop material 20. As a result, in the sewing machine 2 supplied with the loop material 20 by the loop re-feeding device 1, the occurrence of sewing failure when the loop material 20 is sewn on the sewing body 21 So that the loop material 20 of high quality can be stitched on the main body 21 of the sewn product.

Further, the present invention can be modified in various ways as required in the above-described embodiments.

For example, in the present embodiment, three values of the reference pressure value, the weak pressure value, and the intermediate pressure value are used as the fitting pressure according to each supplying step, but depending on the slip condition of the sewing product and the fitting support member The fitting pressure may be set in two stages.

Hereinafter, the fourth embodiment in which the fitting pressure is set to two levels of the reference pressure value and the weak pressure value is shown.

As the pneumatic circuit, the pressure reducing valve 41 and the solenoid valve 42 are removed one by one in the pneumatic circuit 11 (Fig. 10) of the third embodiment as shown in Fig. The set pressure value of the first pressure reducing valve 41a (41) is set to the reference pressure value and the set pressure value of the second pressure reducing valve 41b (41) is set to the weak pressure value, The air supply pressure to the air cylinder 9 is adjusted by controlling the switching of the second solenoid valve 42b so as to set the fitting pressure for the loop member 20 by the fitting support means 3 .

Then, the loop material 20 is folded in a shape such that one end portion 20a is bent in a Z-shape and the other end portion 20b is bent in a U-shape by the loop re- 11 and 12 (a) to 12 (b), a description will be given of a case where the loop material 20 is supplied to the sewing position of the sewing machine 2 and the loop material 20 is sewn on the sewing body 21 by the sewing machine 2. (h), Fig. 14).

First of all, the loop re-supply device 1 drives the moving mechanism 16 in the control means 17 to move the loop member 20 in the state in which the vicinity of the longitudinal one end portion 20a of the loop member 20 is held. The supporting means 3 is moved so that the one end portion 20a of the loop member 20 is positioned at the sewing position of the sewing machine. 13, the control means 17 adjusts the air supply pressure to the air cylinder 9 by controlling the second solenoid valve 42b so as to control the air supply pressure to the loop member 9 by the fit- (20) is controlled to a reference pressure value.

When the pusher 23 of the sewing machine is lowered and the one end 20a of the loop member 20 is pressed, the control means 17 controls the second solenoid valve 42b so that the air Adjust the supply pressure to control the fit-in support pressure to the approximate pressure value.

The control means 17 causes the fitting means 3 to move upward in the leftward direction of the one end portion 20a in the state in which the fitting support pressure by the fitting support means 3 is a low pressure value A direction). As the loop member 20 is slid with respect to the fitting means 3 in accordance with this movement, the loop fitting support position of the fitting support means 3 in the loop member 20 is shifted from the one end of the loop member 20 And moves in the vicinity of the other end 20b in the vicinity of the other end 20a.

The sewing machine 2 sews one end portion 20a of the loop material 20 to the sewing main body 21 under the control of the sewing machine control means 19 based on the command of the control means 17 First sewing). The loop material 20 which is held by the fitting means 3 that can not move in this direction moves in the direction in which the sewing body 21 and the pusher 23 move in the direction of the needle stitch in the first sewing, In a state in which the support pressure is a low pressure value, the support position of the loop fit is changed by appropriately sliding with respect to the fit-in support means (3).

After the first sewing, the pusher 23 rises and the loop feeder 1 feeds the one end portion 20a, which is the center of the loop member 20 in the longitudinal direction, The loop material 20 carries the stitched sewing main body 21 so that the vicinity of the sewing machine body 20a is positioned at the sewing position of the sewing machine 2. The control means 17 of the loop re-supply device 1 then moves the fitting support means 3 holding the other end portion 20b beyond the needle stitch according to the first sewing (the first needle stitch). Thus, the loop material 20 is folded back so as to cover the first needle sweat. Thus, while the fitting support means 3 moves, the loop member 20 moves to the shortest end of the other end portion 20b as the loop fitting support position slightly slides with respect to the fitting support means 3.

Further, the control means 17 lower the fitting holding means 3 to cover the loop material 20 into the sewing body 21. [0053] Further, the pusher 23 is lowered on the upper surface in the vicinity of the one end 20a of the loop member 20 to press the loop member 20 to perform the second sewing, thereby forming the second needle thread in the vicinity of the first needle ball do. During the second sewing, as in the case of the first sewing, the loop fitting support position in which the fitting support means 3 supports the loop member 20 is changed.

Then, after the second sewing, the sewing machine 2 raises the pusher 23 again, and then the loop material 20 is stitched so that the vicinity of the other end 20b of the loop material 20 is located at the sewing position The sewing body 21 is transported. The control means 17 causes the fitting member 3 to move so as to fold the loop member 20 so as to cover the second needle thread so that the one end portion 20a is bent in a Z shape. During this movement, the loop fitting support position shifts as the loop member 20 slightly slides with respect to the fitting support means 3.

Immediately before the movement of the fitting support means 3 is stopped, the control means 17 controls the movement of the fitting support means 3 (a predetermined time has elapsed since the instruction to move the fitting support means 3) (At a timing at which a predetermined amount of command (pulse) is generated) to be the reference pressure value, the movement of the fitting support means 3 is stopped. The control means 17 moves the fork member 25 having the pair of support portions 25a arranged in parallel in the axial direction in the width direction of the loop member 20 so that the both support portions 25a are in contact with the loop member 20, (20) so that the fitting pressure is equal to the reference pressure value.

Thereafter, the control means 17 rotates the fork member 25 such that the other end portion 20b of the loop member 20 is bent in a U-shape. The loop material 20 is slid with respect to the fitting means 3 and released from the fitting means 3 by setting the pressure value to a weak pressure immediately before the end of the rotation.

The sewing machine 2 pulls the fork member 25 from the other end 20b of the loop material 20 and presses the other end 20b of the loop material 20 by the pusher 23 So that the loop material 20 is sewn on the sewing body 21 (third sewing).

Further, instead of the timer, the control timing of the fitting pressure according to the present embodiment may be controlled such that the number of pulses for moving the fitting support means 3 is counted and the timing is controlled in accordance with the counted value.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing an embodiment of a sewing machine for sewing a loop material fed to a loop material supply device and a loop material supplied by the loop material supply device according to the present invention.

Fig. 2 is a perspective view showing the fitting means in the loop feeder shown in Fig. 1. Fig.

Fig. 3 is a pneumatic circuit diagram for driving a fitting member of the fitting means shown in Fig. 2; Fig.

Fig. 4 is a perspective view showing a state in which the abutment supporting members in the abutment supporting means shown in Fig. 2 are moved in directions away from each other. Fig.

Fig. 5 is a block diagram showing the loop feeder of Fig. 1. Fig.

Fig. 6 is a plan view showing the main parts of the loop feeder and the sewing machine of Fig. 1. Fig.

Fig. 7 is a time chart showing the fitting pressure in each feeding step of the loop feeder of Fig. 1;

8 is a perspective view showing another embodiment of the fit-in support means in the loop re-feed device according to the present invention.

Fig. 9 is a perspective view showing a state in which both fitting members in the fitting means shown in Fig. 8 are moved in a direction close to each other;

10 is a pneumatic circuit diagram showing another embodiment of the pneumatic circuit including the fitting pressure changing means in the loop re-supply device according to the present invention.

11 is a perspective view showing an example of a sewing attachment shape of the loop material supplied by the loop re-feeding device.

Figs. 12 (a) to 12 (h) are schematic side views showing respective feed steps of a loop material in a conventional loop re-feeding device. Fig.

Fig. 13 is a pneumatic circuit diagram for driving a fitting member of the fitting means in another embodiment; Fig.

14 is a time chart showing the fitting pressure in each supply step in the embodiment of Fig.

               Description of the Related Art [0002]

1: loop re-feeding device 2: sewing machine

3: fitting means 5: first fitting member

5a: Support part 5b:

5c: attachment part 5d: auxiliary member

5e: Fixing screw 6: Second fitting member

7: frame member 9: air cylinder

9a: cylinder body 9b: cylinder rod

12: electropneumatic regulator (fitting pressure changing means) 17: control means

18: memory means 20: loop material

21: sewed body 25: fork member

27: operating means 28: display means

29: input means 30: detection means

Claims (10)

A fitting support means for fitting and holding a loop member constituting the belt loop, Moving means for moving said fitting means to move each sewing portion of said loop material relative to said sewing body, A control means for controlling at least said fitting support means and said moving means, And a sewing machine for sewing and sewing the belt loop, And a fitting pressure changing means for changing the fitting pressure at which the fitting support means supports the loop member, Wherein the control means controls the fitting pressure changing means so as to change the fitting support pressure in accordance with each supplying step of supplying the loop member to the sewing machine for sewing the belt loop. The method according to claim 1, Wherein the fitting pressure changing means is a means for adjusting the fitting pressure so that the fitting pressure for holding the loop member in a slidable manner and the fitting support for fitting the loop member in a non- So as to be able to be set to a supporting pressure. The method according to claim 1, Wherein the fitting pressure changing means changes the pressure value of the fitting support pressure to a weak pressure value that the fitting support means slidably fits the loop member and that the fitting support means slides the loop member Wherein the reference pressure value is set to an intermediate pressure value between a weak pressure value and a reference pressure value. 4. The method according to any one of claims 1 to 3, Wherein the control means is further configured to set the fitting pressure so that at least one of the sliding speed and the sliding amount of the loop material with respect to the fitting means can be adjusted. 4. The method according to any one of claims 1 to 3, A fork member having a pair of supports, The step of folding the end portion of the loop member and separating the end portion from the fitting and holding means by supporting the end portion of the loop member by the pair of supporting portions and rotating the fork member, The control means is configured such that the fitting pressure of the fitting means immediately before the rotation of the fork member is finished is weaker than the fitting pressure of the fitting means of the both fitting portions when the loop member is fitted And the control means controls the fitting pressure changing means so as to adjust the fitting pressure changing means. 4. The method according to any one of claims 1 to 3, And a storage means for storing a value of the fitting support pressure set in accordance with each of the supplying steps. The method according to claim 6, And input means for inputting a value of the fitting pressure stored in the storing means. The method according to claim 6, And detection means for detecting a thickness dimension of the loop member which is held by the fitting support means, Wherein the control means corrects the value of the fitting support pressure stored in the storage means in consideration of the thickness dimension of the loop member detected by the detection means. 4. The method according to any one of claims 1 to 3, Wherein the fitting pressure changing means is an electropneumatic regulator. 4. The method according to any one of claims 1 to 3, Wherein said fitting pressure changing means is a pneumatic circuit in which a plurality of pressure reducing valves with fixed set pressures are assembled.

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