JPH01176785A - Cloth folding machine - Google Patents

Abstract

PURPOSE:To stabilize the feedback position and fold a cloth without wrinkles by furnishing a means to push out cloth distributing bars alternately to the position of coming to inside of the folding according to the cloth foldback direction. CONSTITUTION:A cloth distributing bar 11 positioned inside folding is pushed out by an air cylinder 13 to the bottom of a guide groove 9, and a folding is made. Another cloth distributing bar 12 is situated at the top of a guide groove 10. When pushed out, the bar 11 jets out air from a jet hole 17, and tension is given to the cloth 1 by the air pressure to remove slack, and at the same time, the foldback position x is held. With inversion of a slider 5 the pushed-out bar 11 is pulled up to the top of the guide groove 9, and air jetting is stopped. Among the cloth distributing bars 11, 12, the one 12 on the side of pushing the cloth 1 in the moving direction is pushed out to the bottom of the guide groove 10 by another air cylinder 14 and jets out air downward aslant. Any slack cloth 1 is pulled by the pushing force of the bar 12 and the force of the air, which prevents generation of wrinkles.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a method for continuously manufacturing fabrics such as pile knitted fabrics (Wilton, Tuftit Carpet, Shichikesoto) while stabilizing the fold position. The present invention relates to a device for folding upwardly while alternately stacking the layers without producing wrinkles due to tension or loosening.

[Conventional technology]

Long pieces of fabric that are manufactured continuously need to be folded in order to be transported to the next processing step or for storage, but folding of fabrics where the texture of the surface is important, such as pile knitted fabrics, is difficult. If the wrinkles do not recover after unraveling, the fabric is considered to be of poor quality.

By the way, a shake-off device for folding fabric usually uses a group of rolls such as guide rolls that move back and forth from side to side in synchronization with the amount of fabric feed to shake the fabric and let it fall freely, and fold it onto a table while folding it and stacking it. It is something that

[Problem that the invention seeks to solve]

However, the fabric in free fall is susceptible to the effects of wind and uneven tension of the fabric itself, and wrinkles cannot be completely prevented. That is, the conventional folding machine of the shake-off type is controlled simply by synchronizing the feed stitch of the fabric and the swing amount, so that the fold position depends on the fabric and is not stable. If the fold position is not stable, the fabric will be stretched or loosened, causing wrinkles. Flexible fabric has almost no independence when hanging on a flat surface, so if it loosens even a little, it will wrinkle. Furthermore, when the fabric is pulled, it stretches, and the folded fabric slips between the eyebrows, which also causes wrinkles. In view of the above points, the actual situation is that assistance from a worker is required to fold the paper without wrinkles. There are also devices that lower the height of the camera to eliminate factors such as wind, but lowering the height of the camera reduces the fabric tension due to the fabric's own weight, which may cause the fabric to wrap around the roll or cause the guide bar to There were problems such as being able to draw the I hexagram.

In addition, a device generally called a yard folding machine presses the fold at the folding position of the fabric and folds it while pulling the fabric, so wrinkles are less likely to occur. However, there was a problem that it could not be applied to fabrics that stretch when pulled.

In view of this, an object of the present invention is to provide a device that can fold soft fabrics such as pile knitted fabrics without causing wrinkles and without damaging the surface texture of the fabrics.

[Means to solve the problem]

The present invention is an apparatus that takes images by continuously feeding a fabric downward, moves the fabric back and forth to the left and right with the fabric in between, and folds and stacks the images on a table using a group of rolls. A pair of fabric handling bars positioned with the fabric sandwiched between a slider that holds the roll group for photographing;
The fabric folding machine is characterized by being provided with means for alternately pushing out these fabric handling bars to positions on the inside of the folds depending on the folding direction of the fabric.

[For production]

According to the present invention, when folding the fabric, by pushing out the fabric handling bar that pushes the fabric in the folding direction, tension is applied to the fabric being folded by the pushing force of the bar, thereby preventing wrinkles. In addition, at the folding position, the bar pushed out from inside the fold holds the fold position in place, preventing the fold from shifting inward, and eliminating unnecessary tensile force. Action and slack can be removed.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a front view of the folding device, and FIG. 2 shows a 1 μm plane view, in which the manufactured fabric 1 is continuously lowered from an upper position onto a lower table lifter 2.

At the upper position of the table lifter 2 is a belt (or chain) wound around a pulley (or sprocket) 3.3.
4 is provided with a slider 5 which is forced to reciprocate linearly in the left-right direction, and is driven by a drive mechanism 20 shown in FIG.

This slider 5 is equipped with a roll group 21 for taking pictures to shake the descending fabric l left and right and fold it back.
As shown in the figure, a feed roll 6 and two guide rolls 7.8 below the feed roll 6 are equipped, and the fabric l is wound on the feed roll 6 and passed between both guide rolls 7.8 and downward. sent to.

In this case, the feed roll 6 is a forced rotation roller and the guide roll 7.8 is a drive roller.

Also, a pair of guide grooves 9.8 are formed on the slider 5 at the lower position of the guide roll 7.8. The IOs are opened in an X-shaped cross pattern, and each guide groove 9. A non-rotating fabric handling bar If, 12 is attached to 10 by loosely fitting its bearing portion. These fabric handling bars II and 12 are configured to move crosswise in the vertical and diagonal directions in their respective guide grooves 9 and 10 by means of air cylinders 13 and 14 installed between each of them and the slider 5. , fabric handling bar 1)
When the fabric handling bar 12 reaches the lowest end of the guide groove 9 and when the fabric handling bar 12 reaches the lowest end of the guide groove 10, limit switches 15 and 16 detect this, respectively.

Also, each fabric handling bar 1). 12 is provided with a blow hole 17 (shown in FIG. 4) for blowing air toward the cloth when it reaches the lowest end of the guide groove at the cloth folding position.

The presser plates 18 and 19 provided on the left and right parts of Figure 1 are made of fabric l.
This is to lightly press down on the folded part from above.

Incidentally, the table lifter 2 mentioned above descends as the amount of folding of the fabric 1 stacked on it increases, and the feed roll 6
This is a well-known hydraulic drive type that adjusts the height between the top surface of the stacked fabric and the top surface of the stacked fabric to be kept constant.

The above fabric handling bar 1). Reference numeral 12 corresponds to a rod used when assisting the operator in a conventional device, and the fabric I has both fabric handling bars 1). 12 to reach the table lifter 2. That is, the fabric l falls freely while being shaken by the left and right reciprocating movement of the slider 5, but by applying one of the fabric handling bars to the inside of the fold of the folded fabric, it is possible to prevent the fold from shifting inward. It is prevented. Also, fabric handling bar 1). 12 makes a fold that is always perpendicular to the edge of the fabric 1. This is because in the conventional device, the fold may be diagonal to the edge due to external disturbances, which may cause wrinkles.

Next, to explain the operation, FIG. 4 shows a state in which the fabric 1 is folded back at the right end, and then moved in the order of b, c, and then shaken off. The feed roll 6 sends out the fabric 1 downward in synchronization with the amount of movement (a). The feed amount (b) overfeeds the movement amount (a) by the cross movement amount (c) of the fabric handling bar and the fold loop amount of the fabric.

In state a, the fabric handling bar 1), which is placed inside the fold, is pushed out by the air cylinder 13 to the lowermost end of the guide groove 9, creating a fold. The other fabric handling bar 12 is located at the upper end of the guide groove 10.

In addition, the fabric handling bar 1) is pushed out and at the same time the fumarole 1
Air is ejected from 7 to apply tension to the fabric 1 using air pressure to remove slack and maintain the fold position X.

As the slider 5 reverses to the left, the fabric handling bar 1) that had been pushed out is pulled up to the upper end of the guide groove 9, and the jet is stopped. b is the fabric handling bar 1) at this time. 12 and the posture of fabric 1 are shown. The posture of the fabric in the state b and the posture of the fabric at the time of folding a are almost the same, and since the fabric is folded slightly loosely due to the influence of overfeed, the fold position X will not shift due to tension.

Further, the pressing plate 19 on the right side in FIG. 1 is lowered to lightly press the folded portion from above, thereby more reliably preventing displacement.

Next, separate the fabric into bars 1). Among the bar 12, the bar 12, which is an example of pushing the fabric 1 in the moving direction, is pushed out to the lowest end of the guide groove 10 by the air cylinder I4, and also blows out air diagonally downward in the pushing direction. C is the fabric handling bar at this time 1). 12 positions and fabric postures are shown. The loose fabric 1 is pulled by the pressing force of the fabric handling bar 12 and the force of the air, thereby preventing and removing wrinkles. This position C
Since there is a distance from the folding position, the folding device X will not shift even if it is pulled.

Thereafter, the fabric 1 is over-fed again, so that it becomes slack and reaches the folding position on the left side in the state d, where a fold is formed in the same manner as in a.

By repeating the above operations, the fabrics 1 are piled up.

In this way, the fabric 1 is processed by the fabric handling bar 1). The pressure of 12 and the air pressure ejected from both bars eliminates the slack and shakes it off, and it reaches the folding position, where the fold at that part is formed in a fixed position.

〔Effect of the invention〕

As is clear from the above detailed description, according to the present invention, almost no tension is required for folding the fabric, and the fold position can be stabilized without pressing the fold with external force. This stability eliminates fabric slack and unbalanced tension, and even flexible, lightweight fabrics can be shaken off in a natural state and folded without wrinkles without being affected by wind or the like.

Therefore, the surface texture of soft fabrics such as pile knitted fabrics is not impaired.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view of the fabric folding machine, FIG. 2 is a side view, FIG. 3 is an enlarged view of the shake-off mechanism, and FIG. 4 is an explanatory diagram of the folding operation. be. l...Fabric, 2...Table lifter, 5...Slider-16...Feed roll, 7, 8...Guide roll, 9. IO...Guide groove, 1). 12...Fabric handling bar, 13.14...Air cylinder, 17...
Fumarole, 21...Roll group for photographing.

Claims (1)

[Claims] (1) A device in which the fabric is continuously fed downward and shaken off onto a table by a group of shake-off rolls that reciprocate from side to side while sandwiching the fabric, and then folded and stacked on the table, the roll group being A slider that is mounted on a shaft has a pair of fabric handling bars positioned with the fabric sandwiched between them, and a means for alternately pushing these fabric handling bars to a position on the inside of the fold depending on the folding direction of the fabric. A folding machine for fabrics.