JPS59172341A - Cloth grabber - Google Patents

Abstract

PURPOSE:To ensure the separation and feed of a cloth, by providing a member for pushing the surface of the cloth by the bottom of the member and a claw for grabbing the signal cloth on an appropriate surface part in cooperation with the pushing member and by horizontally moving the claw to grab the cloth between the pushing member and the claw. CONSTITUTION:To separate and feed one of stacked cloths 3, a cloth pusher 9 is moved down by elongating an air cylinder, to press the stacked cloths by the pushing face 12 of the pusher to sink the cloths by nearly the thickness of one cloth. As a result, a float-up surface 15 is brought into light contact with the uppermost cloth 3a as it is pressed by the pushing face 12, so that the cloth is made immovable. At that time, the lower end 10a of a claw 10 locally pushes down the cloth 3a and sticks therein. A reciprocator 27 is then gradually moved toward a hanger 26 by a cylinder CY2 so that a folded cloth part 33 between a claw holder 30 and a step 13 is displaced toward the step and finally put in a recess 21. The cloth part 33 is thus pinched between the claw 10 and the step 13.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention includes a fabric pressing member and a claw member.
It can grip the surface of a single piece of fabric in the right place without damaging the fabric, making it suitable for, for example, a fabric separation device that separates only the top layer of stacked fabrics. The present invention relates to a fabric gripping device that can be used for.

For example, when feeding fabric to a sewing machine, if it were possible to automate feeding the stacked fabric one by one onto the sewing machine table starting from the top layer, the efficiency of sewing work would be dramatically improved. do. The biggest problem in this case is how to reliably grasp and separate only the uppermost fabric from a large number of stacked fabrics. Further, during work such as sewing, there may be cases where it is necessary to align the position of the fabric due to work circumstances, and furthermore, there may be 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, when considering the case where only the uppermost fabric is taken out from a stack of fabrics, since the fabric is flexible,
At that time, there are inconveniences such as the second fabric being transferred together, or the second fabric being moved due to friction when the first fabric is being transferred, and making sure that only the topmost fabric is transferred. It is extremely difficult to grasp and separate.

An object of the present invention is to provide a fabric gripping device that is used to reliably grip only one piece of fabric when separating the fabrics described above. An embodiment of the present invention will be described based on the drawings, taking as an example a case where the apparatus is attached to a fabric feeding device that feeds fabric one by one.

In FIG. 1, the fabric supply device (2) sequentially feeds one fabric at a time from the fabric (8a) at the top position of the stacked fabric (3) on which a large number of fabrics are piled up. 5). In the same figure, (6) (6) is a guide case, which extends in a long shape from above the fabric support table (7) that supports the stacked fabric (3) to above the sewing machine table (5). ing. The fabric gripping device (1) of the present invention has a guide case (6) (6) so as to be movable between one end of the guide case (6) (6) and the other end of the guide case (6) (6).
installed on. A pair of fabric gripping devices (1) (1), (1) (1) are attached to each guide case (6) (6) at a predetermined interval according to the width of the fabric. The fabric (3) in the top position of the stacked fabric (3)
a) Grasp.

Figure 2 is a perspective view showing an embodiment of the fabric gripping device (1) of the present invention. In the figure, the fabric gripping device (1) of the present invention is shown.
) comprises a cloth pressing member (9) and a claw member 01. The cloth pressing member (9) has a comb shape as shown in FIG. 3, and presses the cloth surface with its lower surface Ql). The lower surface Qη includes a rectangular pressing surface Q force and a stepped portion approximately equal to the thickness of one piece of fabric at one linear edge (12a) of the pressing surface (6), that is, the first edge. The floating surface 0υ is divided into two, and the floating surface 0υ is connected to the floating surface through the
0 has a smooth finish. In addition, at positions near both sides of the floating portion H that engages the floating surface θ, there are tip edges (16a).
A rectangular guide groove θηθ which extends perpendicularly to the stepped portion 03 from the stepped portion 03 is provided, and the raised portion 0e includes the pressing surface (1'4). It protrudes like a comb blade from the pressing part α.

Note that the raised portion Q (the lower surface of the tip edge (16a) of it is formed as an arcuate surface). In addition, on the floating surface θ, there is a U-shaped relief groove Q over the entire length of the boundary between the suppression surface 0 and the
]) is provided. As shown in Fig. 4, the relief groove (Jl) has a groove width approximately twice the thickness of one piece of fabric (C) so that only one piece of fabric (0) can be stored in a folded state. In addition to setting the groove depth to at least
The setting is such that a piece of fabric (C) is folded back inside the relief groove Q1) and hangs.

As shown in FIG. 2, the fabric suppressing member (9) is fixed to an inverted-shaped fixing member (E) that moves up and down as the air cylinder (CYI) (shown in FIG. 1) expands and contracts. That is, so that the lower surface (Jl) of the fabric pressing member (9) is horizontal,
In addition, the upper surface of the pressing part 01 is brought into contact with the lower end surface of the hanging piece (c) of the fixed member) so that the floating part QI is opposite to the horizontal piece of the fixed member), and the bolt hole (c) is inserted through it. It is screwed onto the hanging piece (c) using a bolt. Also, a reciprocating member Q is arranged between the horizontal piece (c) and the floating part QQ, which moves forward and backward with respect to the hanging piece Q→ by the expansion and contraction of an air cylinder (OY2) fixed to the hanging piece (c). It is set up.

Claw member (10 is the notch 'I' as shown in FIGS. 2 and 3)
M Q7) It is formed by hanging a claw piece → on the edge of the pressing part Q (lti) of the mounting piece, which is screwed onto the lower surface of the member (a) that is moved to the position i. Therefore, the claw piece 91 is located in the inner groove 0, and moves in the guide groove (17) so as to be able to move forward and backward with respect to the stepped portion Q3 as the reciprocating member θ moves forward and backward. The claw piece OI gradually tapers toward the lower end, and its lower end 11JII is the lower end of the claw member Of-. Slightly (a piece of fabric) below the
Q) Set it so that it protrudes by about half the length of the thickness.

Note that the air cylinder 0Y2) is always in an extended state, but when it is extended, the position of the reciprocating member Q71 relative to the hanging piece (E) is the lower end of the claw member 0O (i o
The distance between a) and the stepped portion (11) is set to be approximately equal to the length of the folded cloth portion shown in FIG. 4, or slightly longer than that.

The operation of the fabric gripping device (1) of the present invention will be explained below in Fig. 5 (&
) to FIG. 5(d). First, the stacked fabrics (
3), the fabric pressing member 00 is lowered by extending the air cylinder 0Y1), facing the fabric (8a) at the uppermost position. In this state, the fabric (8a) in the uppermost position lightly contacts the floating surface ae, and the fabric (8a)
) is pressed against the pressing surface (2) and fixed immovably.

At this time, the lower end (10a) of the claw member α1 partially pushes down the fabric (3a) located at the uppermost position, and
It cuts into a).

Next, by reducing the air cylinder 0Y2), it becomes a reciprocating member)
When the claw member (10) is gradually advanced toward the hanging piece (A), at the same time, the claw member (10 is also advanced toward the stepped portion (6),
on the claw piece) is the floating surface Qf9 as shown in Fig. 5(b).
The folded cloth portion (to) existing between the claw piece (to) and the stepped portion Qe is moved toward the stepped portion a3 over substantially the entire width of the folded portion.

In addition, when looking at the accuracy of the claw piece (a), the folded fabric part) is in a state where it is in light contact with the floating surface 0 →, and as mentioned above, the floating surface is usually finished as a smooth surface when it is 0. , the transition of the folded cloth portion (end) becomes extremely smooth. Further, in this embodiment, since the lower surface of the tip edge (16a) of the floating portion OQ is formed as a circular arc surface (a), the folded cloth portion C (e) does not move at all due to the floating portion θQ. The lower end part (10'a
) into the fabric (8a) becomes even better, making the transfer more reliable. Note that the lower end of the claw member 01 (
Since 10a) has an arcuate shape, there is no risk of damage to the fabric (8a) due to the lower end (10a) biting into the fabric (8a).

As mentioned above, since the fabric (8a) is immovably fixed by the pressing surface oi, the folded fabric portion 0→ is folded from one side edge (12→ side) of the pressing surface 0 along with the transition. , gradually invades the relief groove Qυ.

Then, as shown in Fig. 5 <a>, the folded cloth part (c)
is housed in the relief groove 00 in a completely folded state, the folded fabric portion (
38a) is the step tels (J3 and the claw member (1*
It is firmly gripped between the lower end (i o a) of. In this embodiment, as mentioned above, since the rake surface (31) at the lower end of the claw piece (, q□) is formed as a curved surface, the folded fabric portion (a a a) is the rake surface 91). It is folded smoothly into a loop along the Therefore, the fabric (3
In a), the grip can be held easily and reliably.

Each fabric gripping device (1,) borrowed in this way (1)
(1) (1) is a fixing member (5 +r4) as shown in (a) in order to grasp 41 (1 etc.) of the fabric (8&).
When A) is raised, only the fabric (8a) in the uppermost position will be separated. Therefore, each fabric gripping device (1
) and - along the guide case (6) (6) to a predetermined position on the sewing machine table (5), and at the position, extend the air cylinder 0Y1) to release the fabric gripping piece f! t (
1) - is lowered and then the air cylinder (cy2) is extended to retract the claw member θ1, the fabric (3a) is released from the fabric gripping piece H(1) and is fed to the sewing machine table (5). . As mentioned above, the lower end (10
Since a) slightly protrudes from the pressing surface 0→, it is possible to reliably grip the stacked fabric (3) down to the last piece.

6 and 7 show that guide grooves (17) having a depth sufficient to guide the upper portion (c) of the claw member 01 are provided on both sides of the floating surface 00 at the floating point 100. Another embodiment of the fabric gripping device (1) of the invention is shown, which is provided from the tip end (G) side to the stepped portion 0, for example, as shown by the arrow of the operating shaft (B).

As described above, the fabric gripping device of the present invention includes a fabric pressing member capable of pressing the fabric surface with its lower surface, and a claw member that cooperates with the fabric pressing member to grasp a suitable position on the surface of a piece of fabric. To be able to grip a piece of fabric reliably and without damaging the fabric in any way. Therefore, the fabric gripping device of the present invention can be suitably employed, for example, in a fabric feeding device that sequentially feeds stacked fabrics onto a sewing machine table one by one starting from the topmost fabric. It can be widely used in cases where it is necessary to grip fabric, such as when changing the position of the fabric.

In the fabric gripping device of the present invention, the dimensions and shape of the lower end portion (10→) of the claw member 00 may be the same as those shown in the embodiments, as long as they can bite into only one piece of fabric to be gripped. However, the lower end (10θ) of the claw member 01 may be provided with an uneven portion to the extent that it does not damage the fabric. However, the length of the protrusion depends on the I'X width, softness, etc. of the fabric to be gripped.The folded fabric part 6] is moved toward the stepped part 0:K and the fabric is stretched to the extent that it hangs. There is no problem as long as it digs in. Depending on the fabric to be gripped, fabric pressing members (9) with different widths and depths of the relief groove Qη, and claw members (9) that match the fabric pressing members (9) may be used. 10 shall be prepared in advance and used as appropriate.Also, the number of guide grooves aη provided in the fabric pressing member (9) is as follows:
Depending on the type of fabric, it may be set to one or an appropriate number of three or more.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a case where the fabric pressing member of the present invention is applied to a fabric feeding device, FIG. 2 is a perspective view showing an embodiment of the present invention, and FIG. 3 is a perspective view showing a fabric pressing member and a claw member. 4 is a side view showing a state in which the fabric is stored in the relief groove of the fabric suppressing member, and FIGS. 5(a) to 5(d) are partial side cross-sections illustrating the present invention in detail. 6 and 7 are sectional views showing other embodiments of the present invention. (1)...Fabric gripping device, (9)...Fabric pressing member, (10-...Claw member, (10a)...Lower end of claw member, α1)...Lower surface of fabric pressing member ,(stomach)···
Pressing surface, (12a)... One side edge of the pressing surface, (c)...
・Step part, αυ... floating surface, θη... guide groove, Q
])...Escape groove. Patent applicant: Matsuya Sewing Equipment Sales Co., Ltd. Nakamura
Tetsuo Patent Attorney Kiyobe Okamoto

Claims (1)

[Claims] (1) A fabric pressing member capable of pressing a fabric surface with a lower surface, and a claw member that cooperates with the fabric pressing member to grip a suitable position on the surface of a piece of fabric, and the lower surface of the fabric pressing member is provided with - A pressing surface having a linear side edge, and a smooth floating surface that is connected to one side edge of the pressing surface so as to float through a stepped portion approximately equal to the thickness of one piece of fabric. The floating surface n'Il:゛・:::')i...:Group 1゛0 is provided with a guide groove extending from its tip edge side to the step portion. The floating surface is provided with an escape groove that can store only one piece of fabric in a folded state over the entire length of the boundary between it and the suppression surface, while the claw member is arranged so that it can move the inside of the guide groove to the stepped portion. 1. A fabric gripping device, characterized in that the claw member is arranged so as to be able to move forward and backward, and is arranged so that the lower end portion of the claw member can bite into only one piece of fabric to be gripped.