JPH04327881A - Strain removing device for cloth - Google Patents

Abstract

PURPOSE:To facilitate the removal of deflection and wrinkles of cloth by hori zontally moving both pressing members or only a first pressing member in the direction to widen the opposing distance of the pressing members, after the first and second pressing members have been lowered at both ends of the cloth which has been placed on the horizontal plane. CONSTITUTION:First and second elevating cylinders 11a, 11b; 12a, 12b are oppositely arranged on prescribed holding plates which have been placed above a cloth-placing table T, and first and second horizontally moving cylinders 13, 15 are provided to the lower end parts of the respective cylinder rods, and first and second pressing members 17, 18 are fixed to each one end of the cylinder rods of the respective horizontally moving cylinders 13, 15 respectively. When the device is applied to a pattern setting device, first, a cloth-holding and-transferring part is moved to a prescribed position on the pattern-setting detection table T, and then the cloth W that has been held is moved on the table T, thereafter, the respective pressing members 17, 18 are lowered, and also they are horizontally moved in the direction widening the opposing distance therebetween to stretch the cloth W right and left. Thereby, the deflection and wrinkles which have been produced on the cloth W can be removed.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] This invention is used to remove distortions that occur in fabric placed on a flat surface in a conveying device that feeds fabric to a sewing section of a sewing machine, or a device that aligns fabric patterns. This invention relates to a distortion removing device.

0002

[Prior art and its problems] Currently, various automatic machines are being introduced in garment factories and other places to automate processes, but one of the important problems with these automatic machines is that This is the occurrence of bends, wrinkles, etc. that occur in the placed fabric. For example, the one shown in FIG. 11 is a pattern matching device that re-stackes the fabric bundles WB stacked on the stacking table T1 so that the patterns of each fabric W match, but this device also prevents distortion of the fabrics. This is a cause of deterioration in the quality of pattern matching of the device.

That is, this pattern matching device M1 uses the fabric gripping and conveying section 1 to convey the uppermost fabric W from the fabric bundle WB stacked in any direction on the stacking table T1 onto the pattern detection table T2, and then The pattern is detected and memorized by the imaging device 3 at the position, and the pattern matching stacking table T3 is located directly below the pattern.
After being transferred by pressing and fixing at multiple locations, the next highest fabric W on the stacking table T1 is similarly conveyed to the pattern detection table T2, and the pattern is detected at that position and detected immediately before. Fabric W
The amount of deviation from the pattern is determined, and the pattern matching stacking table T3 is displaced by the moving mechanism 4 provided below so as to correct the amount of deviation, and then the pattern detecting table T2 is moved by the fabric presser 5.
By pressing and fixing the upper fabric W at multiple locations and transferring it to the pattern matching stacking table T3 located directly below, the upper and lower fabrics are stacked with matching patterns (details are given in patent application No. 58349, see drawings).

However, in this device M1,
When the fabric W is moved from the stacking table T1 onto the pattern detection table T2, distortions such as wrinkles and bending may occur in the fabric W. For example, as shown in FIG. 12(a), the fabric W may be curved. If the pattern is transferred to the pattern matching table while
An inappropriate amount of deviation is calculated based on the curved handle Wg,
Since an error also occurs in the amount of displacement of the pattern matching laminated portion, a problem arises in that proper pattern matching cannot be performed.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a distortion removing device that can reliably remove the distortion of fabric that is a problem in automatic machines that handle fabrics.

[0006]

[Means for Solving the Problems] The present invention includes first and second pressing members for pressing both ends of a fabric placed on a horizontal surface, and the first and second pressing members are arranged vertically. a horizontal movement mechanism that moves the first and second pressing members in the horizontal direction, and controls the first and second lifting mechanisms and the horizontal movement mechanism; and control means for controlling the first and second
After operating the elevating mechanism to lower the first and second pressing members to both ends of the fabric, and enlarging the distance between the two pressing members by operating the horizontal movement means, the two pressing members are moved up and down respectively. It is made to rise by means.

[0007]

[Operation] In this invention, after the first and second pressing members descend to both ends of the fabric placed on a horizontal surface, the first pressing member
, Since only the second pressing member or the first pressing member moves horizontally in a direction that increases the facing distance between both members, distortions such as bending and wrinkles may occur in the fabric placed on it. However, since the distortion is removed by being stretched by the horizontal movement of the pressing member, an appropriate placement state of the fabric can be obtained. After removing the distortion, both pressing members rise to release the fabric in preparation for the next fabric conveyance operation, but at this time, if both members are raised alternately,
The fabric can be placed in a more appropriate state without causing the inconvenience that the slightly taut fabric is entirely shifted due to its restoring force.

[0008]

[Example] Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 10.
The explanation will be based on. FIG. 1 is a perspective view showing the overall configuration of this embodiment. In the figure, 11a and 11b are first elevating cylinders (first elevating means) supported above the cloth table T by a predetermined holder, and both are supplied with air (not shown) via a solenoid valve or the like. The cylinder rods 11a1 of both cylinders are connected to the power source, and the cylinder rods 11a1 of both cylinders are
, 11b1 appear and disappear in the vertical direction at the same time.

Reference numerals 12a and 12b are second lifting cylinders held opposite the first and second lifting cylinders 11a and 11b by a predetermined holder, and these cylinders are also interposed between the air supply source and the air supply source. The cylinder rods 12a1 and 12b1 are both moved upwardly and downwardly by the solenoid valve. Note that this first lifting cylinder 11a
, 11b and the second lifting/lowering cylinder 12b are operated independently of each other by control means to be described later.

13 is the first air cylinder 11a,
A first horizontally moving cylinder (first horizontally moving means) is attached to the lower end of the cylinder rod 11a1, 11b1 of 11b via a mounting plate 14, and 15 is a cylinder rod 12a1 of the first lifting cylinder 12a, 12b. ,1
It is a second horizontally moving cylinder attached to the lower end of 12b2 via a mounting plate 16, and both of these horizontally moving cylinders 13 and 15 are connected to an air supply source through different solenoid valves, and are controlled by opening and closing the solenoid valves. They appear and appear along the same straight line.

Further, 17 is a first pressing member fixed to the cylinder rod 13a of the first horizontally moving cylinder 13, and 18 is a first pressing member fixed to one end of the cylinder rod 15a of the second horizontally moving cylinder 15. The lower surface portions 17a, 18a of both presser members 17 and 18 are made of an elastic member such as a sponge having a relatively large coefficient of friction. These pressing members 17, 18 are connected to the respective lifting cylinders 11a, 11b and 12a, 12b.
By projecting the cylinder rods 11a and 12a downward, the fabric W placed on the mounting table T is firmly pressed.

[0012] The cloth strain removing device in this embodiment is as follows:
FIG. 2 shows a state in which the above-mentioned mechanism is installed in the pattern matching device shown in the above-mentioned prior art. As shown in the figure, the lifting cylinders 11a, 11b, 12a,
12b is held above the pattern matching detection stand T2,
By operating the lifting cylinders 11a, 11b, 12a, and 12b, the pressing members 17 and 18 are raised and lowered to both sides of the fabric W placed on the pattern matching detection table T2, and the horizontal movement cylinders 13 and 15 are operated to move the pressing members 17 and 18 to both sides. It is now possible to move it to

FIG. 3 is a block diagram showing a control system circuit when this embodiment is applied to a pattern matching apparatus as described above. In the figure, 21 is a well-known microcomputer consisting of a CPU 21a (control means), ROM 21b, RAM 21c, etc. On the input side of the CPU 21a, a drive circuit Md of the pattern matching device, an operation panel Mp of the pattern matching device, an output On the side, there are solenoid valves 11v, 12v, 13v, 15v connecting each cylinder and the air supply source.
etc. are the respective drive circuits 11d, 12d, 13d, 1
5d, etc.

Next, the operation of the distortion removing device when applied to a pattern matching device will be explained based on the flowchart of FIG. 4 and the operation diagrams of FIGS. 5 to 9. When the start switch provided on the operation panel Mp of the pattern matching device is turned on, the CPU 21 first operates the fabric gripping and conveying unit 1 via the drive circuit Md, and the fabric is placed on the stacking table T1, as in the conventional case. The uppermost fabric W of the fabric bundle WB is held (step 1).

Next, the CPU 21a moves the fabric gripping and conveying section 1 to a predetermined position on the pattern matching detection table T2 based on the movement data stored in the RAM 21c, and moves the fabric W that was being held onto the pattern matching detection table T2. Move it up (step 2). After the fabric gripping and conveying unit 1 releases the fabric it is gripping onto the pattern matching table, it returns to the stacking table T1 and comes to a halt in preparation for the next operation (step 3).

During this time, the first and second lifting cylinders 11a, 11b, 12a, held on the pattern matching detection table T2,
12b are both inactive, and the respective pressing members 17 and 18 held by the cylinder rod are held above the cloth W placed on the pattern detection table T2, as shown in FIG.

Here, the CPU 21 operates the solenoid valves 11v, 12
cylinders 11a, 11b, and 12a with v in the open state
, 12b are operated simultaneously, and as shown in FIG. 6, each cylinder rod is projected downward, and the pressing members 17 and 18 are lowered to both ends of the fabric W placed on the pattern matching detection table T2 (step 4). ). Next, the solenoid valve 13v is opened for a predetermined time Δt1 by the control operation of the CPU 21a, and during that time the cylinder rod 1 of the first horizontal cylinder 13 is opened.
3a and the cylinder rod 15a of the second horizontal cylinder 15
protrudes to the left as shown in FIG. 7, and moves the first and second pressing members 17 and 18 to the left and right (step 5).

In this way, by increasing the facing distance between the first pressing member 17 and the second pressing member 18, the cloth W being pressed by them is forced to the left and right, so that, for example, if the pattern is Even if the fabric W has wrinkles or bends as shown in FIG. 12(a) when placed on the alignment detection table T2, these distortions are removed by this pushing and spreading operation as shown in FIG. 12(b). removed as shown.

After this, the first and second horizontal cylinders 13,
Between Δt1 where 15 protrudes in the left-right direction, that is,
While the solenoid valves 13v and 15v are in the closed state, first, the solenoid valve 1
1v is in the open state and the first lifting cylinders 11a, 11
b becomes inoperative, and as shown in Fig. 8, the cylinder rod 1
The first pressing member 11a1 rises together with 1a1 and 11b1, and the pressure on the left end of the fabric is released (step 6). Next, the solenoid valve 12v is closed, the second lifting cylinders 12a and 12b are inactivated, and the cylinder rods 12a1 and 12b1 are raised as shown in FIG. (Step 7).

In this way, in this embodiment, the first and second pressing members 17 and 18 are raised alternately to release the fabric W sequentially from one end, so that when the left end is released, Even if the fabric W, which had been under tension, moves slightly due to its restoring force, the right end remains fixed.
The entire fabric does not move, and the fabric W does not shift from a predetermined placement position.

Furthermore, after Δt1 has elapsed, the cylinder rods of the first and second cylinders 11a, 11b, 12a, and 12b are both retracted, and then the solenoid valves 13v and 15v are both closed, and both horizontally moving cylinders are 13 and 15 return to their initial states, and then the CPU 21a operates the pattern matching device M1 via the drive circuit Md to restart the pattern matching operation (step 8). At this time, the fabric W placed on the pattern matching detection table T2 is in a state where distortion has been completely removed, so various detection and correction operations in the pattern matching operation are performed properly, and the device can fully demonstrate its original functions.

[0022] In the above explanation, the fabric distortion removing device in this embodiment was applied to a pattern matching device, but this distortion removing device can also be applied to other automatic machines that handle fabric W. be. For example, the present invention can be applied to a fabric supply device M2 of a button-equipped sewing machine M as shown in FIG.

This fabric supply device M2 moves the uppermost fabric W from the fabric bundle WB stacked at the stacking position P1 of the fabric mounting table T to the fabric setting position P2 by a fabric moving mechanism (not shown).
Then, the fabric W is pressed from above by the fabric pressing member M21 and transferred to the sewing machine sewing section P3 to attach buttons. At the fabric setting position P2 of this device, the first and second lifting cylinders 11a, 11b, 12a, 12b of the distortion removing device are held in the same direction as the longitudinal direction of the fabric, and the fabric pressing member M21 presses from above. By performing the above-described distortion removal operation before work, it is possible to remove the bends and wrinkles that occur in the fabric W when moving from the stacking position P1 to the fabric setting position P2, and to maintain an appropriate setting state. As a result, the incidence of seams, etc. can be significantly reduced.

In the above embodiment, the first lifting cylinders 11a, 11b and the second lifting cylinders 12a, 12b
Although the first and second lifting cylinders are raised alternately, it is possible to remove the distortion of the fabric by raising the first and second lifting cylinders at the same time. 13 and 17 are not limited to being activated simultaneously, but may be activated sequentially. In addition, as a horizontal movement mechanism, two horizontal movement cylinders 1 are used.
3 and 17 are used, however, it is also possible to remove the distortion of the fabric by providing only one of them and moving only one of the pressing members 17 or 18 horizontally.

Furthermore, in the above embodiment, the first and second
Although the elevating means and the first and second horizontal moving means are constructed of air cylinders, they can be replaced by a combination of a motor and a rack and pinion, or by a Hall screw that rotates together with the motor and a member that is screwed together and moves forward and backward. The pressing member may be moved up and down and horizontally moved using the above-described embodiments, and the present invention is not particularly limited to the above-mentioned embodiments.

[0026]

As explained above, in the fabric distortion removing device according to the present invention, after lowering the first and second pressing members to both ends of the fabric placed on a horizontal surface, The first and second pressing members or only the first pressing member,
Since the two members are moved horizontally in the direction of increasing the facing distance, distortions such as bends and wrinkles that occur in the placed fabric are stretched and removed by the horizontal movement of the pressing member, so that the fabric can be properly adjusted. The mounting state can be obtained. In addition, since both pressing members are raised alternately after the distortion is removed, even if the fabric recovers from its previous tension state when the pressure is released, there is no risk that the entire fabric will shift, making it even better. A comfortable mounting condition can be obtained. Therefore, if this invention is applied to an automatic machine that handles dough, it will be possible to handle the dough in an appropriate state at all times, and the automatic machine will be able to fully demonstrate its original functions, which will have a tremendous effect. It is.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a side view showing a state in which the embodiment is applied to a pattern matching device.

FIG. 3 is a block diagram showing the configuration of a control system circuit shown in FIG. 3;

FIG. 4 is a flowchart showing the operating procedure of the embodiment when applied to a pattern matching device.

FIG. 5 is a side view showing the initial state of the embodiment.

6 is a side view showing a state in which both pressing members are lowered from the state shown in FIG. 5. FIG.

7 is a side view showing a state in which both pressing members have moved laterally from the state shown in FIG. 6. FIG.

8 is a side view showing a state in which the first pressing member is raised from the state shown in FIG. 7. FIG.

9 is a side view showing a state in which the second pressing member is raised from the state shown in FIG. 8. FIG.

10 is a perspective view showing a case where the device shown in FIG. 1 is applied to a fabric supply device of a sewing machine with a button; FIG.

FIG. 11 is an explanatory side view showing a schematic configuration of a pattern matching device.

FIG. 12(a) is a plan view showing the state in which the fabric is bent;
b) is a diagram showing the state of the fabric in the state shown in FIG. 6;

[Explanation of symbols]

11a, 11b First lifting cylinder (first lifting mechanism) 12a, 12b Second lifting cylinder (second lifting mechanism) 13 First horizontal movement cylinder (first horizontal movement mechanism) 15 Second horizontal Movement cylinder (second horizontal movement mechanism) 17 First pressing member 18 Second pressing member 21a CPU (control means) T Placement table W Fabric

Claims (2)

[Claims] 1. A strain removing device for removing strain generated in a cloth placed on a horizontal surface, comprising first and second pressing members for pressing both ends of the cloth; a first lifting mechanism that vertically lifts and lowers the pressing member;
a second lifting member that vertically raises and lowers the pressing member; a horizontal movement mechanism that horizontally moves at least one of the first pressing member or the second pressing member; and the first and second lifting mechanisms and the horizontal movement mechanism. control means for controlling the moving mechanism, the control means controlling the first and second lifting mechanisms;
, after the second pressing member is lowered to both ends of the fabric, the horizontal moving means is operated to enlarge the facing distance between the two pressing members, and then both the pressing members are raised by the respective elevating means. A fabric distortion removal device featuring: 2. The control means lowers the first and second pressing members to both ends of the fabric using the first and second elevating mechanisms, and then operates the horizontal movement means to move the two pressing members opposite each other. The distance is increased, and then the first and second elevating means are used to increase the distance between the first and second elevating means. 2. The cloth strain removing device according to claim 1, wherein the second pressing member is raised alternately.