JPH0130734B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention includes a fabric pressing member and a claw member to grip a suitable part of the surface of a piece of fabric reliably and without damaging the fabric. For example, it can be used to grip and hold fabrics, which can be suitably used in fabric separation devices that separate only the top layer of fabrics.
This relates to a separation device.

(Prior Art and Problems to be Solved by the Invention) For example, when supplying fabric to a sewing machine, one by one, starting from the topmost layer of fabric,
If it were possible to automate the feeding of materials onto the sewing machine table, the efficiency of sewing work would be dramatically improved. In this case, the most important problem is how to grasp and separate only the uppermost fabric from a large number of laminated fabrics.
Further, during work such as sewing, there may be cases where it is necessary to change the position of the fabric due to the convenience of the work, or cases where it is necessary to stack the sewn fabric at a predetermined location. In such cases, an important issue is how to grip a piece of fabric reliably. For example, if you want to separate and take out only the top layer of fabric from a large number of stacked fabrics, because the fabric is flexible, the second layer of fabric will be transferred along with it. Alternatively, when the first fabric is transferred, the second fabric may become misaligned due to friction, making it extremely difficult to reliably grasp and separate only the uppermost fabric.

Attempts to solve these problems have been proposed using needle-like members as disclosed in Japanese Utility Model Publication No. 57-15869 and Japanese Patent Publication No. 54-30590. However, in the case of such a device, there was a problem that not only was it impossible to prevent the tendency of two or more pieces of fabric to be picked up at the same time, but also there was a risk that the separation of the fabrics would become uncertain due to deformation of the needle. . In addition, there are problems with the ease of handling the device, such as the need to make delicate adjustments depending on the thickness of the target fabric, and furthermore, there is a risk that the fabric may be damaged by the needle-like member. However, I was still not satisfied with it.

An object of the present invention is to provide a fabric gripping device that can reliably grip only the uppermost layer of laminated fabrics without causing damage to the fabric when separating the fabrics, and has excellent handling properties. It is.

(Means for Solving the Problems) The fabric grasping/separating device 1 according to the present invention includes a fabric pressing member 9 that can press a fabric surface with a lower surface 11, and a fabric pressing member 9 that cooperates with the fabric pressing member 9 to separate a piece of fabric. The lower surface 11 of the fabric pressing member 9 has a pressing surface 12 with one edge formed in a straight line, and one side edge of the pressing surface 12 has a claw member 10 that grips an appropriate part of the surface of the fabric. The floating surface 15 is divided into two parts, each having a smooth floating surface 15 which is connected as if floating through a stepped portion 13 approximately equal to the thickness of one piece of cloth. A guide groove 17 extending to the stepped portion 13 is provided, and the floating surface 15 is provided with an escape groove 21 that can accommodate only one piece of fabric in a folded state over the entire length of the boundary with the pressing surface 12. On the other hand, the claw member 10 is arranged so that it can move forward and backward in the guide groove 17 with respect to the stepped portion 13, and the lower end 10a of the claw member 10 is
It is characterized by being able to bite into only one piece of fabric to be gripped.

(Function) Then, the fabric pressing member 9 is lowered toward the uppermost fabric 3a of the fabrics 3 stacked on the fabric support table, and the pressing surface 12 presses the laminated fabric, so that the laminated fabric becomes approximately one piece of fabric. sink by the thickness of In this state, the fabric 3a in the uppermost position lightly contacts the floating surface 15, and is pressed by the pressing surface 12 and fixed immovably. At this time, the lower end 10a of the claw member 10 locally pushes down the fabric 3a at the uppermost position and bites into the fabric 3a. After that, when the claw member 10 is advanced toward the stepped portion 13, the folded cloth portion 3 existing between the claw member 10 and the stepped portion 13
3 smoothly transitions toward the stepped portion 13. Since the fabric 3a is immovably fixed by the pressing surface 12, the folded fabric 33 is folded back from one edge of the pressing surface 12 as it moves,
It gradually invades into the relief groove 21. When the folded cloth portion 33 is housed in the relief groove 21 in a completely folded state, the folded cloth portion is firmly gripped between the stepped portion 13 and the lower end of the claw member 10. It will be done.

(Example) Examples of the present invention will be described below with reference to the drawings, taking as an example a case where the apparatus is attached to a fabric supply device that supplies fabric one by one to a sewing machine.

In FIG. 1, a fabric supply device 2 sequentially feeds a laminated fabric 3, in which a large number of fabrics are stacked, to a sewing machine table 5 one by one starting from the fabric 3a located at the uppermost position. In the figure, reference numeral 6 denotes a guide case, which extends in a long shape from above the fabric support table 7 that supports the laminated fabric 3 to above the sewing machine stand 5. Fabric gripping/separation device 1 according to the present invention
is attached to the guide cases 6, 6 so that it can run and move between one end of the guide cases 6, 6 and the other end thereof. The guide cases 6, 6 include
A pair of fabric gripping/separating devices 1, 1, 1, 1 are installed at a predetermined interval depending on the fabric width, respectively, and grip the fabric 3a located at the uppermost position of the laminated fabrics 3, 3. .

FIG. 2 is a perspective view showing an embodiment of the fabric gripping/separating device according to the present invention. In the same figure, the device 1 of the present invention includes a fabric pressing member 9 and a claw member 10.

The fabric pressing member 9 has a comb shape as shown in FIG. 3, and presses the fabric surface with its lower surface 11. The lower surface 11 includes a rectangular pressing surface 12 and a pressing surface 1.
A floating surface 15 is connected to one linear side edge 12a of 2, that is, one longitudinal side edge, so as to float through a step 13 approximately equal to the thickness of one piece of fabric. , the floating surface 15 is finished smooth. Further, near both sides of the floating portion 16 including the floating surface 15, there are rectangular guide grooves 17, 17 extending perpendicularly to the stepped portion 13 from the tip edge 16a toward the stepped portion 13. The floating portion 16 protrudes from the pressing portion 19 including the pressing surface 12 in a comb-teeth shape. Note that the lower surface of the tip edge 16a of the floating portion 16 is formed as a circular arc surface 20. Further, a U-shaped escape groove 21 is provided on the floating surface 15 over the entire length of the boundary portion with the pressing surface 12. The escape groove 21 is the fourth
As shown in the figure, in order to store only one piece of fabric c in a folded state, the width of the groove is set to about twice the thickness of one piece of fabric c, and the depth of the groove is at least It is set to such an extent that one piece of cloth c can be folded back within the escape groove 21.

As shown in FIG. 2, the fabric pressing member 9 is fixed to an inverted L-shaped fixing member 23 that moves up and down as the air cylinder CY1 (shown in FIG. 1) expands and contracts. That is, the upper surface of the pressing portion 19 is brought into contact with the lower end surface of the hanging piece 26 of the fixing member 23 so that the lower surface 11 of the fabric pressing member 9 is horizontal and the floating portion 16 faces the horizontal piece 25 of the fixing member 23. and is screwed onto the hanging piece 26 using a bolt inserted through the bolt hole 24. In addition, the horizontal piece 25 and the floating portion 1
A reciprocating member 27 that moves forward and backward with respect to the hanging piece 26 is disposed between the hanging piece 26 and the hanging piece 26 by expansion and contraction of an air cylinder CY2 fixed to the hanging piece 26.

As shown in FIGS. 2 and 3, the claw member 10 has a claw piece 30 attached to the side edge of the mounting piece 29 on the pressing part 19 side of the mounting piece 29, which is positioned in the guide groove 17 and screwed onto the lower surface of the reciprocating member 27. is installed vertically. Therefore, the claw piece 30
is located within the guide groove 17, and can move forward and backward within the guide groove 17 with respect to the stepped portion 13 as the reciprocating member 27 moves forward and backward. The claw piece 30
In this embodiment, the claw member 10 gradually tapers toward the lower end, and the lower end portion, that is, the lower end portion 10a of the claw member 10, has an arc shape. Also, the lower end portion 10
The surface (front surface) on the pressing part 19 side of a is formed as a curved rake surface 31, and the surface (back surface) on the opposite side is formed as a curved rake surface 31.
is formed as a curved relief surface 32. The length of the claw piece 30 is set so that its lower end slightly protrudes below the pressing surface 12 (about half the length of the thickness of one piece of fabric c). In addition, air cylinder
CY2 is always in an extended state, but the position of the reciprocating member 27 with respect to the hanging piece 26 during its extension is between the lower end 10a of the claw member 10 and the step part 1.
3 is set to be approximately equal to the length of the folded cloth portion 34 shown in FIG. 4, or slightly longer than that.

Hereinafter, the operation of the fabric gripping/separating device 1 according to the present invention will be explained based on FIGS. 5a to 5d. First, the fabric pressing member 9 is lowered toward the uppermost fabric 3a of the laminated fabrics 3 stacked on the fabric support table 7 by the extension of the air cylinder CY1, and the pressing surface 1 is moved as shown in FIG. 5a.
2 presses the laminated fabric 3, and the laminated fabric 3 is
Let it sink by approximately the thickness of one piece of fabric. In this state, the fabric 3a in the uppermost position lightly contacts the floating surface 15, and is pressed by the pressing surface 12 and fixed immovably. At that time, the lower end portion 10a of the claw member 10 locally pushes down the fabric 3a at the uppermost position, causing the fabric 3a to
It bites into.

Next, by reducing the air cylinder CY2, the reciprocating member 27 is gradually advanced toward the hanging piece 26, and at the same time, the claw member 10 is also advanced toward the stepped portion 13, and the claw member 30 is moved to the position shown in FIG. 5b. As shown, the folded cloth portion 33 that exists between the claw piece 30 and the stepped portion 13 over substantially the entire width of the floating surface 15 is
It is moved toward the stepped portion 13. In addition, the claw piece 30
The folded cloth portion 33 is on both sides of the floating surface 1
5, and since the floating surface 15 is finished as a smooth surface as described above, the transition of the folded cloth portion 33 is extremely smooth. Further, in this embodiment, in particular, the lower surface of the tip edge 16a of the floating portion 16 has a circular arc surface 20.
Since the folded cloth portion 33 is formed as
can move more smoothly without any movement being hindered by the floating portion 16, and furthermore, since the back surface of the lower end portion of the claw piece 30 is formed as a curved flank 32, the lower end portion 10a of the claw member 10 can be moved more smoothly. The cutting into the fabric 3a becomes even better, making the transfer more reliable. Note that the lower end 1 of the claw member 10
Since 0a has an arcuate shape, there is no risk of damage to the fabric 3a due to the lower end portion 10a biting into the fabric 3a.

As described above, since the fabric 3a is immovably fixed by the pressing surface 12, the folded fabric portion 33 is folded back from the side 12a of the pressing surface 12 as it moves, and gradually enters the escape groove 21. I will do it.

Then, as shown in FIG. 5c, the folded cloth portion 3
3 is housed in the escape groove 21 in a completely folded state, the folded cloth portion 33a in the guide groove 17 portion is firmly held between the stepped portion 13 and the lower end 10a of the claw member 10. is grasped by. In this embodiment, since the rake surface 31 at the lower end of the claw piece 30 is formed as a curved surface as described above, the folded fabric portion 33 is smoothly folded back into a loop shape along the rake surface 31. . Therefore, only the fabric 3a in the uppermost position can be gripped easily and reliably.

In order to grasp the four corners of the fabric 3a, each fabric gripping/separating device 1, 1, 1, 1 configured in this way is at the uppermost position when the fixing member 23 is raised as shown in FIG. 5d. Only the fabric 3a will be separated. Therefore, each fabric gripping/separating device 1... is moved along the guide cases 6, 6 to a predetermined position on the sewing machine table 5, and the air cylinder CY1 is extended at that position, and the device 1... When the air cylinder CY2 is extended and the claw member 10 is retracted, the fabric 3a is separated from the fabric gripping device 1 and supplied to the sewing machine table 5. As described above, since the lower end 10a of the claw member 10 slightly protrudes from the pressing surface 12, it is possible to reliably grip every last piece of the laminated fabric 3.

6 and 7, a guide groove 17 having a depth sufficient to guide the upper portion 35 of the claw member 10 is formed on both sides of the floating surface 15 from the tip edge 36 side of the floating surface 15. 13, and is arranged so that the claw member 10 can be moved forward and backward with respect to the step part 13 by reciprocating movement of the operating shaft 37 in the direction of the arrow f, according to the present invention.
Another embodiment of the separation device 1 will be shown.

In the fabric gripping/separating device 1 according to the present invention, the dimensions and shape of the lower end portion 10a of the claw member 10 are as follows:
The lower end 10a of the claw member 10 may be provided with an uneven portion to the extent that it does not damage the fabric, as long as it can bite into only one piece of fabric to be gripped. It can also be used as a gift. The claw pieces 30 must at least protrude downward from the floating surface 15, but the amount of protrusion depends on the thickness, softness, etc. of the fabric to be gripped. There is no problem as long as it bites into the fabric to the extent that it can be moved toward the stepped portion 13. Depending on the fabric to be gripped,
Cloth pressing members 9 having different widths and depths of the relief grooves 21, and claw members 10 matching the cloth pressing members 9.
should be prepared in advance and used as appropriate.
Also, the number of guide grooves 17 provided in the fabric pressing member 9 is as follows:
Depending on the type of fabric, it is set to one or an appropriate number of three or more.

(Effects of the Invention) The fabric gripping/separating device according to the present invention includes a fabric pressing member capable of pressing the fabric surface with its lower surface, and a fabric pressing member that cooperates with the fabric pressing member to grasp an appropriate area on the surface of a piece of fabric. As a result of including the claw members, only one piece of fabric can be gripped reliably and without damaging the fabric. Therefore, the fabric gripping/separating device according to the present invention has the following features:
For example, it can be suitably used in a fabric feeding device that sequentially feeds fabrics one by one onto a sewing machine table starting from the top layer of fabric, and can also be used to grasp and separate fabrics when changing the fabric position. It can be widely adopted when necessary.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a fabric gripping/separating device according to the present invention applied to a fabric feeding device, FIG. 2 is a perspective view showing an embodiment of the present invention, and FIG. 3 is a fabric pressing member. and a fourth perspective view illustrating the claw member.
The figure is a side view showing a state in which the fabric is stored in the escape groove of the fabric pressing member, FIGS. FIG. DESCRIPTION OF SYMBOLS 1...Fabric gripping/separation device, 9...Fabric pressing member, 10...Claw member, 10a...Lower end of claw member, 11...Lower surface of fabric pressing member, 12...Press surface, 12a... One side edge of the pressing surface, 13...Stepped portion, 15...Flying surface, 17...Guide groove, 21...
...Escape groove.

Claims (1)

[Claims] 1 a fabric pressing member capable of pressing the fabric surface with its lower surface;
a claw member that cooperates with the fabric pressing member to grip an appropriate area on the surface of a piece of fabric; One side edge of the surface is divided into two, with a smooth floating surface that is connected as if floating through a step part approximately equal to the thickness of one piece of cloth, and the floating surface has a A guide groove extending from the tip edge side to the stepped portion is provided, and the floating surface is provided with an escape groove that can accommodate only one piece of fabric in a folded state over the entire length of the boundary with the pressing surface. ,
The claw member is arranged so that it can move forward and backward with respect to the stepped portion within the guide groove, and the lower end of the claw member can bite into only one piece of fabric to be gripped. A fabric gripping/separating device characterized by its features.