JPH11199106A - Intermittent feeding method of cloth - Google Patents

Abstract

PROBLEM TO BE SOLVED: To precisely feed cloth in its lengthy direction by providing a nipping means to nip cloth in moving route of cloth, releasing holding of cloth after moving the nipping means in the moving direction of cloth in a nipping state by a specified distance and returning the nipping means to an initial position. SOLUTION: Cloth A towed by a feeding device 5, enters between a lower plate 3 and an upper mold 4 of a main body device 2 and it is nipped with pressure between the upper mold 4 moving downward and the lower plate 3. After upward movement of the upper mold 4, the cloth A is towed by the feeding device 5 and moved forward. The feeding device 5 firstly places a nipping means 7 at a rear end position of the feeding device 5, thereafter moves a presser member 9 downward and makes it nip the cloth A between itself and a support member 8. Thereafter, the upper mold 4 moves upward and after nipping pressure of the cloth A is released, the nipping means 7 is moved forward, and the cloth A in the rear is drawn into the main body device 2. Thereafter, nipping by the nipping device 7 is released while the cloth A is nipped with pressure by the lower plate 3 and the upper mold 4, and the nipping means is returned to the initial position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for intermittently feeding a fabric in a longitudinal direction thereof, and more particularly to a method for forming a pattern on a long fabric at predetermined intervals. The present invention relates to a method for accurately feeding a cloth in order to accurately set a position where the processing is performed on the cloth when performing the above processing.

[0002]

2. Description of the Related Art In general, when a sheet-shaped object is fed in the length direction without being limited to cloth, the sheet-shaped object is nipped by a nip roller, and the object is fed by rotating the nip roller. Paying is being done.

If the nip roller is continuously rotated,
The sheet-like object can be continuously fed, the feeding speed can be controlled by the rotation speed of the nip roller, and the feeding is intermittent if the nip roller is rotated at a predetermined rotation angle. This is the most common means for feeding a sheet-like object.

[0004]

However, when handling the fabric, since the fabric does not have a shape-retaining property unlike ordinary sheet-like objects, the fabric may be locally deformed when fed by a nip roller. There is a problem that wrinkles easily occur.

[0005] In general, sheet-like articles such as metal plates, plastic sheets, and paper are hardly deformed even when a slight force is applied, and the strength inherent in the articles in any of the vertical, horizontal, and diagonal directions is reduced. Does not deform.

[0006] On the other hand, in the case of cloth, it is easily deformed by a small force, and the magnitude of the deformation has directionality. A woven fabric resists deformation in the vertical and horizontal directions, but is extremely easily deformed in an oblique direction. Further, in the knitted fabric, only a portion to which a force is applied is locally deformed largely in any direction, and a thin nonwoven fabric is liable to locally deform when it is thin.

[0007] When such a cloth is fed while being pinched by a nip roller, the cloth may be deformed or displaced in the width direction due to a slight variation in the partial diameter of the roller or a change in the pinching pressure. Thus, it is difficult to feed straight in the length direction. Also, if the direction of displacement is partially different,
In some cases, misalignment or wrinkles may occur, and it is difficult to feed the nip roller.

Although the occurrence of misalignment and wrinkles can be suppressed by reducing the clamping force of the nip roller, if the clamping force is small, slipping tends to occur between the nip roller and the cloth, and the rear cloth is moved forward. And the fabric cannot be fed the correct length.

The present invention has been made in view of the above circumstances, and has as its object to provide a method for accurately feeding a fabric in its length direction without using a nip roller. is there.

[0010]

According to the present invention, there is provided a holding means for holding the cloth over the entire width of the cloth in a moving path of the cloth, and holding the cloth with the holding means. The holding means is moved in the moving direction of the cloth by a predetermined distance, and then, with the grip released, the holding means is moved in the direction opposite to the moving direction of the cloth to return to the initial position. .

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a molding apparatus 1 for molding a cloth. Reference numeral 2 denotes a main body device of the molding device 1, which presses the cloth A between the lower plate 3 and the upper mold 4, transfers a pattern engraved on the upper mold 4 to the fabric A, and performs molding. Things.

A cloth supply means (not shown) is provided at the rear of the main unit 2, and a feeding device 5 of the present invention is installed at the front of the main unit 2, and further at the front thereof. An accommodating means 6 for the molded cloth A is provided.

Then, the cloth A is supplied from the supply means and passes between the lower plate 3 and the upper die 4 of the main unit 2, where the cloth A is pressed and molded between the lower plate 3 and the upper die 4. Then, the next feeding position of the fabric A is fed forward by the post-feeding device 5 to supply the main body device 2 with the next shaping position, and the shaped shaping device 1 is fed into the housing means 6 and the housing means 6 Is to be accumulated.

The feeding device 5 comprises a holding means 7 comprising a supporting member 8 and a pressing member 9 which face each other with the cloth A therebetween.
The supporting member 8 and the pressing member 9 extend over the entire width of the fabric A. When the pressing member 9 comes into contact with and separates from the supporting member 8, the holding of the fabric A over the entire width is released. I am getting it.

The holding means 7 can be moved back and forth in the moving direction of the molding device 1 by the moving means 10. In the form of the drawing, the moving means 10 is a belt 12 stretched over a pair of rollers 11, the holding means 7 is attached to the belt 12, and the rollers 12 are driven by a servomotor to drive the belt 12. By rotating, the holding means 7 can be moved back and forth by a predetermined distance.

The moving means 10 is not limited to the one having the structure described above, but may be any means capable of accurately reciprocating the holding means 7 by a predetermined distance. For example, an air cylinder may be used. it can.

The feeding of the cloth A from the feeding device 5 to the storage means 6 may be performed by another feeding means such as a nip roller 13 having a small clamping force. In the case of the type in which the fabric A is dropped into a deep container, the fabric A is sent forward by its own weight due to the weight of the fabric A falling into the storage means 6, so that there is no need to provide another feeding means.

[0018]

The operation will be described with reference to FIG. 1. The cloth A supplied from the rear is pulled by the feeding device 5 from the front and enters between the lower plate 3 and the upper die 4 of the main unit 2. Then, the upper die 4 is temporarily stopped, and the upper die 4 is moved downward, so that the cloth A is pressed between the upper die 4 and the lower plate 3, and the molding is performed.

After the cloth A is molded, the upper mold 4 moves upward, and the cloth A is again pulled by the feeding device 5 and moves forward by a predetermined distance, and is molded at a position behind the cloth A by a predetermined distance. You.

The molded fabric A is fed forward by the feeding device 5. In the feeding device 5, first, in its initial state, the holding means 7 is at the rear end position of the feeding device 5 with the support member 8 and the pressing member 9 opened.

At this time, the cloth A on the feeding device 5 is preferably in a lightly tensioned state such that there is no large slack due to the weight of the cloth A dropped by the nip roller 13 or the storage means 6.

Here, the holding member 9 of the holding means 7 is moved downward, and the cloth A is held between the holding member 9 and the support member 8 over the entire width thereof. At this time, since the fabric A is free from a large force and is in a free state, the fabric A is clamped in a stable state without distortion or wrinkles.

Next, after the upper mold 4 of the main unit 2 is moved upward to release the clamping pressure of the cloth A, the moving means 10 is operated to rotate the belt 12, and the clamping means 7 is moved forward by a predetermined amount. The fabric A at the rear is moved by a distance, whereby the rear fabric A is pulled and drawn into the main body device 2, and the fabric A in the main body device 2 is drawn out.

At this time, since the cloth A is held by the holding means 7 over the entire width, the cloth A is pulled with an equal pulling force over the entire width, and the width of the cloth A is different from the feeding by the nip roller. There is no room for movement to occur, and the paper is fed uniformly and accurately over the entire width in the feeding direction for a predetermined distance.

After that, the lower plate 3 and the upper die 4
While the cloth A is being pressed, the holding by the holding means 7 is released, and the moving means 10 is operated in the reverse direction to return the holding means 7 to the initial position behind.

At this time, it is preferable that the cloth A is in a lightly tensioned state so that there is no large slack behind the holding means 7. If the loosening is a little, the loosening moves forward of the holding means 7 by moving the holding means 7 backward,
The tension of the cloth A between the holding means 7 and the nip roller 13 causes the fabric A behind the holding means 7 to be in a lightly tensioned state.

When the holding means 7 returns to the initial position, it returns to the initial state, holds the cloth A by the holding means 7 and moves the holding means 7 forward after the holding pressure by the main unit 2 is released. To feed the cloth A for a predetermined distance.
The process of returning the holding means 7 to the initial position during the molding process is repeated.

In the above description, the holding means 7 uses the cloth A
Has been described so as to always return the holding means 7 to the initial position after the holding means 7 has been fed for a predetermined distance. However, the moving distance of the holding means 7 in one step is sufficiently longer than the feedable distance in the feeding device 5. If the cloth A is small, the process of moving the holding means 7 forward a predetermined distance is repeated a plurality of times in a state where the cloth A is held by the holding means 7, and then the holding of the cloth A is released and the holding means 7 is moved to the initial position. It is also possible to return to.

[0029]

According to the present invention, as described above, since the cloth A is held by the holding means 7 over the entire width,
The fabric A is pulled with a uniform pulling force over the entire width. Even if the clamping force between the support member 8 and the pressing member 9 is partially varied, there is no local difference in the traction force applied to the cloth A, and the cloth A can be spread over the entire width. Towed evenly.

In the case of feeding by a nip roller, the movement of the cloth A in the width direction occurs due to local slight variation in the clamping pressure, and the cloth A is shifted laterally, and wrinkles and slack are generated. However, according to the present invention, the fabric A
Is transported in a predetermined distance in the feeding direction uniformly and accurately over the entire width because there is no room for movement in the width direction since it is held by the holding means 7 and pulled in the traveling direction. .

In the above description, the present invention is described as being used for feeding the fabric A to the molding device 1. However, when performing various processes such as printing, punching, and sewing on the fabric A, It can be widely used for feeding the fabric A to the processing location.

According to the present invention, since the cloth A can be fed accurately, it is possible to print a continuous pattern, for example.

[Brief description of the drawings]

FIG. 1 is a front view of a molding device to which the present invention is applied.

[Explanation of symbols]

 A cloth 5 feeding device 7 holding means 8 support member 9 holding member 10 moving means

Claims (1)

[Claims] 1. A clamping means (7) for clamping the cloth (A) over the entire width thereof in a movement path of the cloth (A) is provided.
While holding the cloth (A) with the holding means (7), the holding means (7) is moved by a predetermined distance in the moving direction of the fabric (A), and then the holding means is released. (7) intermittently feeding a fabric, wherein the fabric (A) is moved in a direction opposite to a moving direction of the fabric (A) to return to an initial position.