JPH0475965A - High-speed automatic fabric folding machine - Google Patents

Abstract

PURPOSE:To realize efficient operation by providing a narrow, long guide to guide a fabric smoothly over a relatively long distance while being kept at the center of the width by a cross guider, a screw roller and a triangle guide. CONSTITUTION:A fabric (w) is guided along a transfer passage, stopped at the beam 42 of a stretching and winding device 41 to actuate the entire device, which allows the fabric (w) to pass through a deliverying device 1, to be gradually transformed at the right and left ends toward the back sides, to be guided so that both edges w1, w2 of the fabric (w) can be held with inclined attitude between rollers 14a, 14b opposite to each other of a cross guider at the inlet of a guide 9 and to be promptly drawn so that both edges w1, w2 of the fabric (w) can positively come to the center of the width b1 at screw rollers 15, 16. The fabric (w) after folded is passed through a guide roller 20 by the attracting force of the stretching and winding device 41, subjected to second time folding (quartet folding)at a triangle guide 21 so that both edges w1, w2 located at the center of the width of the fabric (w) can be embraced inward, guided to a guide roller 37 while being kept in such a state by guide rods 31a, 31b and wound by the device 41.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a high-speed automatic folding machine for a raw fabric, which is used to continuously fold a raw fabric in a fixed manner.

(Prior art) A continuous folding machine that folds both edges of a continuously fed fabric toward the center of the width of the fabric, and then folds the edges of the fabric in such a way as to wrap the edges inward. is disclosed in Japanese Patent Publication No. 59-24698, which was previously proposed by the applicant.

This machine was the first to be able to mechanically perform the folding operation of the original fabric.

(Problems to be Solved by the Invention) An object of the present invention is to improve the above-described original fabric stacking machine and to further improve the efficiency of the original fabric folding operation.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a web feeding device for feeding out the web in a horizontal position, and also directs the web fed from the device along its traveling direction. A guide body for supporting the fabric from below within a certain length range is provided at a central position inside the fabric, and the width interval of the guide bodies is made at least smaller than the width of the fabric on the entrance side, and the width of the guide body is made to be at least smaller than the width of the fabric at the entrance side, and the width of the guide body is set at the entrance side to support the fabric from below. A cross guider is formed so that the width is approximately 1/2 of the width of the fabric, and a cross guider is provided below the guide body to sandwich and transfer the hanging portions of the left and right edges of the original fabric in a symmetrical downward slope. A screw roller formed with symmetrical teeth is provided on the exit side to draw both edges of the sheet toward the center of the width of the sheet, and the two-fold sheet is further folded in the center during the movement of the screw roller. It is characterized by the provision of a triangular guide.

At this time, a sensor is provided below the triangular guide to detect the deviation of the final folded end of the original fabric, and the triangular guide is appropriately displaced in the width direction of the original fabric in relation to the detection information of the sensor. Eggplant is preferred.

(Function) The elongated guide body smoothly guides the raw fabric over a relatively long distance, and during this time the cross guider keeps the left and right edges of the raw fabric in a constant downwardly inclined position and reliably brings them to the center of the interior. The screw rollers, on the other hand, make both ends of the web finally converge to the center of the width, which makes it possible to fold the web over and over at extremely high speed.

(Example) Hereinafter, specific examples of the present invention will be described in detail with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a web feeding device for feeding out the web W in a horizontal position, and the specific details thereof are as follows. That is, 2 is an original fabric support device that can rotatably support the beam 3 on which the original fabric W has been wound up. 5a, 5b, 5c, and 5d are guide rollers supported by the machine frame 10 and can freely rotate at fixed positions.
Further, 6a and 6b are feed rollers that are driven at fixed positions. 7 is a dancer roller which is movable up and down while maintaining a horizontal position. The raw web W is first guided upward through the lower side of the guide roller 5a, then forward through the upper side of the guide roller 5b, downward through the upper side of the guide roller 5c, and then guided downward through the upper side of the guide roller 6a. It is adapted to be guided upwardly through the side, downwardly through the upper side of the feed roller 6b, upwardly through the lower side of the dancer roller 7, and further to the front side of the device 1 through the upper side of the guide roller 5b. . Reference numerals 8a and 8b are suction tubes for removing fluff, etc. from the web W, which are placed close to each other in front and behind the web W, and have slits S for air suction at the points in contact with the web W.
is the provision.

Reference numeral 9 denotes a guide body fixed to the machine frame 10 for supporting the raw fabric W fed out from the device 1 from below along its longitudinal direction. That is, specifically, the guide body 9
is located at the center of the width of the web W and is elongated along the longitudinal direction of the web W, and its inlet side 9a forms a downwardly bent B-shaped guiding part, and each side 9b
, 9b constitute linear guide portions for guiding each side portion of the original fabric W, and the opposing distance of each of these linear guide portions 9b, 9b is 1.
1 is approximately 1/2 of the original width b1 at least near the end
is set to The illustrated guide body 9 is one currently in use, and is made by bending a tube into a U-shape in plan view, and therefore each linear guide portion 9b
, 9b are made of tubular material, and in this case, the distance between the linear guide portions 9b, 9b is such that the distance between the linear guide portions 9b becomes gradually smaller from the inlet side 9a. 9d is each linear guide portion 9b;
A connecting member 9d connects 9b in the longitudinal direction, and the center thereof is supported by an upright member 9e.

Guide wheels 11a and llb are provided between the web feeding device 1 and the guide body 9, and are rotatable at fixed positions via upright support members 12 and 12. The guide wheel 1
1a and llb are for regulating the hanging of the original web W located between the guide roller 5d and the guide body 9, but it is sufficient if they are provided as necessary.

As shown in FIG. 3, at the lower part of the guide body 9 and on the entrance side 9a, there is a cross guider for holding the left and right edges W1 and W2 of the raw fabric W in a constant downwardly inclined posture and transferring it. 13a and 13b are provided. These cross guiders 138, 13b are not provided so that their mounting height positions and mutual distances can be freely adjusted. Here, each cross guider 13a, 13b is provided with a pair of rollers 14a, 14b, and these rollers 14a
, 14b (one of which is driven and one without. In this example, only one pair of cross guiders is provided, but if necessary, a plurality of cross guiders may be provided at appropriate intervals along the running direction of the web W. This may further improve the effect of the present invention.

On the other hand, screw rollers 15 and 16 are provided below the guide body 9 toward the outlet side 9C for drawing both edges W1 and W2 of the web W to the center of the web width b1. Here, the screw roller has spiral teeth symmetrically provided on the circumferential surface of the roller. These screw rollers15.
It is desirable that the gap between the guide member 16 and the guide body 9 be as small as possible without damaging the original fabric W. Also screw roller 1
5. The number of 16 is two and none in the illustrated example, but it is also possible to provide three or more if necessary, as in the case of the cross guider, or conversely, the number can be reduced to only one. There is no problem even if it is provided.

17, 18a, and 18b are all driven by feed rollers provided near the kite body 9, and are for conveying the raw fabric W that has passed through the guide body 9 further forward. Reference numeral 19 denotes an auxiliary roller which is brought into contact with the feed roller 18b with appropriate elasticity, and is used to separate from the feed roller 18b when stable feeding of the web W can be obtained even without this roller. When the raw fabric W is guided by these feed rollers 17, 18a and 18b, the raw fabric W after passing through the guide body 9 is guided downward through the upper part of the feed roller 17, and then the feed roller 17 and the feed roller 18
a to the rear, and then passed between the auxiliary roller 19 and the feed roller 18b, and then passed below the roller 18b and guided toward the rotatable guide roller 20 supported on the upper part of the machine frame 10. Make it. The feed rollers 17, 18a and 18b shown in the drawings are examples of those currently in use, but their number and arrangement may be changed as necessary.

21 is the guide body 9 and the feed rollers 17.18a, 1
A triangular guide provided continuously behind 8b, and two rods 21a in a crossed shape as shown in FIGS. 4 and 7.
, 21b and a connecting member 21c that connects these rods 21a and 21b. The triangular guide 21 is the fifth
As shown in the figure, the upper sliding tube 22, the lower sliding tube 23, the screw tube 24, and other members 25a, 25b, 25c, etc. are integrated, and the upper sliding tube 22 is horizontally attached to the machine frame 10. The lower sliding tube 23 is fitted onto the support rod 26 installed horizontally on the machine frame 10, and the screw tube 24 is fitted horizontally on the machine frame 10 and rotates at a fixed position. The threaded shaft 28 is screwed onto the threaded shaft 28 which is freely installed.
The machine frame 10 may or may not be displaced in the width direction by rotation.

Reference numeral 29 denotes a pulley fixed to the screw shaft 28 so that the rotation of the motor 30 shown in FIG. 4 is transmitted via the belt 32.

In the vicinity of the apex P of the triangular guide 21, two further guide bodies 31a and 31b are arranged with a slight opening and relatively narrow intervals.

Each tip of these guide bodies 31a, 31b is supported by a horizontal bar 33 fixed to the machine frame 10, and a diagonal support bar 34 (see Fig. 4) is capable of sliding displacement in the longitudinal direction thereof.
, and their bases are supported by two sliding tubes 36 and 36 which are fitted onto another horizontal rod 35 fixed to the support rod 27 and whose positions can be fixed.

Reference numeral 37 is configured such that the folded original fabric W is properly aligned by a rotatable guide roller supported by the machine frame 10 and sent to a tension winding device 241 to be described later.

Furthermore, a pneumatic cylinder device 38 shown in FIG. 6 is provided between the guide bodies 31a, 31b and the guide roller 37, and a piston 38a of the device 38 has a piston 38a disposed at the tip of each side edge w3, w4 of the original web W. sensor 39 for detecting
The detection instruments 39 equipped with a and 39b are fixed. When the sensors 39a and 39b issue the required deviation signals, the control device 40 rotates the aforementioned motor 30 in an appropriate direction to rotate the screw shaft 28 and move the triangular guide 21 by the required amount to the machine frame 10. The structure is such that it can be displaced in the width direction.

41 is a tension winding device which includes a triangular guide 21 and a guide body 31.
a, 31b and the guide roller 37, the original fabric (product) W is wound around the outer periphery of the beam 42 with a constant tension.

Next, the operation of the device of the present invention will be explained. Prior to operation, the original fabric W is supported by the original fabric supporting device 2, and then the starting end thereof is guided along the original fabric transfer path of the apparatus of the present invention and the tension winding device 41
It is fixed to the beam 42 of. After that, the entire device is put into operation, and as a result, the raw web W is pulled by the feed rollers 6a and 6b of the feeding device 1 and is fed out in front of the rollers 6b. The three feed rollers 17, 18a and 18b in front of the feed roller 18b send the paper through the guide body 9 to the front of the feed roller 18b. In this raw fabric transfer process, the guide roller 5d
In the range from 1 to 9 to the entrance side 9a of the guide body 9, the raw web W is deformed so that its left and right ends are gradually bent toward the back side, that is, for example, at the guide wheels 11a and Ilb, as shown in FIG. As shown in (a), it is deformed into an inverted U-shape, and then in the guide body 9 it is double-folded so that both edges W1 and W2 of the raw fabric W are drawn to the center of its width.
Specifically, on the entrance side of the guide body 9, the cross guider 13a
, 13b between opposing rollers 14a14b to guide both edges W1 and W2 of the original fabric W so as to maintain an inwardly inclined posture at a constant angle, and at the screw roller 15, the roller actively rotates. The screw roller 15 acts to actively draw both edges w1 and w2 of the web W to the center of the web width b1, and then the next screw roller 16
At this point, the roller 16 acts to more reliably draw the two end edges W1 and W2, which were incompletely drawn together by the previous screw roller 15. Therefore, the original fabric W is deformed into a predetermined form as shown in FIG. 3(c). Here, since the guide body 9 is elongated, the folding process of the original fabric W can be carried out over a relatively long distance range, thereby enabling stable folding at high speed. This makes it possible to achieve speeds of approximately 50 meters or more. After the raw fabric W folded in the above manner passes through the feed rollers 17, 18a and 18b, it further passes through the guide rollers 20 and the triangular guide 21 due to the pulling force of the tension winding device 41. At the triangular guide 21, as shown in FIG. 7, the width center of the original web W is guided to pass through the vertex p,
A second double fold (quadruple fold) in which both edges w1 and W2 located at the center of the width of the original fabric W are wrapped inward.
will be implemented. Subsequently, the original fabric W is guided to the guide roller 37 while maintaining its folded state by the guide bodies 31a and 31b, and is then wound onto the beam 42 of the tension winding device 41.

In the above embodiment, 39a and 39b are guide rollers 37.
These sensors are arranged facing each other so as to sandwich the folded edge of the fabric at an upper position, and detect the deviation of the final folded portion and issue a required detection signal. 21 is appropriately displaced in the width direction of the original fabric W. That is, now one side edge w4 of the original fabric W is indicated by the arrow f.
If it shifts to the 1 side, the triangular guide 21 will be displaced in the direction of the arrow f2, and the movement of the position of the apex P will cause the rod 2 to move.
Since the bending width b2 on the side of 1b is reduced, the side edges w3 and w4 are accurately overlapped. Conversely, when the other side edge w3 of the original fabric W shifts toward the arrow fl side, the triangular guide 21 is moved in the opposite direction, and each side edge W3, W4
In the same way, the images are overlapped accurately.

(Effects of the Invention) The present invention is configured as described above, and despite the high operating speed (50 m/min or more), it is possible to obtain folded products accurately and reliably. This not only increases the reverse feed speed but also greatly contributes to improving the quality of the folded original fabric.

Furthermore, according to claim (2), it is possible to automatically correct irregularities in the side edges of the original fabric after it has finally been folded.

[Brief explanation of drawings]

Figure 1 is an overall plan view, Figure 2 is an overall front view, Figure 3 is a perspective view showing the area around the inlet side of the guide body, and Figures 4 and 5 are perspective views of the area around the triangular guide from different angles. Figure 6 shows the surroundings of the sensor, Figure 7 is an explanatory diagram of the operation of the triangular guide, Figure 8 shows the state of folding the original fabric, and a) is a cross section taken along the line a-a in Figure 1. Figure (b) is a sectional view taken along line bb in Figure 2. (c) is a cross-sectional view taken along the line cc in FIG. 2, (d) is a cross-sectional view taken along the line dd in FIG. 7, and (e) is a cross-sectional view taken along the line e-e in FIG. 7. W... Original fabric, wl and w2... Edge, 1... Original fabric feeding device, 9... Guide body, 13a and 13b.
...Cross guider 15 and 16...Screw roller, 21...Triangular guide, 39a and 39b...
Sensor 6th figure 4th! ! I ℃ 71st! ! V (a) W (b) (C) Cd) Ce]

Claims (2)

[Claims] (1) A fabric unwinding device is provided to feed out the fabric in a horizontal position, and a guide body is provided to support the fabric fed out from the device from below within a certain length range along the running direction of the fabric. The width interval of the guide body is made smaller than the width of the original fabric at least on the entrance side, and is gradually formed to be approximately 1/2 of the width of the original fabric near the terminal end, while the guide body At the lower part of the body, there is a cross guider for transporting the hanging parts of the left and right edges of the fabric in a symmetrical downward slope, and symmetrical teeth for drawing the both edges toward the center of the width of the fabric. A high-speed automatic stacking of raw fabrics characterized in that a screw roller formed in a shape of 1 is provided, and a triangular guide is provided on the other exit side for further folding the above-mentioned double-folded fabric at the center while the roller is running. Folding machine. (2) A sensor is provided below the triangular guide to detect the deviation of the final folded end of the original fabric, and the triangular guide can be appropriately displaced in the width direction of the original fabric in relation to the detection information of the sensor. The high-speed automatic stacking and folding machine for original fabric according to claim (1), characterized in that: