JP2002274748A - Sheet folding and stacking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stack rubber sheets 2 on a pallet 1 in compact. SOLUTION: This sheet folding and stacking device for downwardly feeding out the rubber sheet 2 by a laterally reciprocating and oscillating guide device 3 to fold the sheet in zigzag and to stack the sheet on a pallet 1 located at a lower part of the guide device 3 is provided with a pair of left and right pressing units 4 mounted at a lower part of the guide device 3, each pressing unit 4 is composed of (A) a stood frame 12, (B) a moving base 13 vertically movably mounted on the frame 12, (C) a moving base driving device 14 for driving the moving base 13, (D) a pressing member 15 vertically oscillatably mounted on the moving base 13, and downwardly pressing a folded part of the rubber sheet 2 folded back after folded on the pallet 1 and/or its neighborhood part, and (E) a pressing member driving device 16 for driving the pressing member 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for folding and laminating sheets such as rubber sheets.

[0002]

2. Description of the Related Art In a tire manufacturing process, a rubber sheet is folded on a pallet and laminated. In this case, the rubber sheet is fed downward by a guide device that reciprocates in the left-right direction. , Are folded in a zigzag shape on a pallet and laminated. By the way, conventionally,
There is no mechanism for pressing or aligning the rubber sheets stacked on the pallet simply by folding and stacking the rubber sheets.

[0003]

For this reason, the above-mentioned conventional techniques have the following problems. A. That is, the rubber sheet was laminated on the pallet while the fold portion of the rubber sheet was largely raised in a curved shape. Therefore, there is a problem that the rubber sheets are stacked in a bulky (bulky) state, and a large number of rubber sheets cannot be stacked on the pallet. B. Further, there is a problem that the rubber sheets are stacked on the pallet in a disordered state and greatly protrude from the pallet, and the protruding portion interferes with transportation or requires a large storage (stock) space. Was.

[0004] It is an object of the present invention to provide a folding and stacking apparatus for sheets which can solve the above-mentioned problems.

[0005]

In order to achieve the above object, a feature of the present invention is that a guide device swinging back and forth in the left and right direction is used to feed out a sheet downward and to place a sheet on a mounting table below the guide device. In a folding and stacking apparatus for sheets to be stacked in a zigzag shape, a pair of left and right pressing units are provided below the guiding device, and each pressing unit is
A. An upright frame; B. a movable table provided on the frame so as to be vertically movable; A moving table driving device for driving the moving table; A pressing member that is provided on the movable table so as to be swingable in the vertical direction, and that presses the folded portion of the sheet formed by the folding and / or a portion in the vicinity thereof after the sheet is folded on the mounting table; . The present invention has a pressing member driving device for driving the pressing member.
In some cases, the movable table is provided with a guide member for guiding the fold portion of the sheet from the outside. In addition, the guiding device has a pair of left and right payout rolls that feed out with the sheet interposed therebetween, and each payout roll is formed with a plurality of large diameter portions having a diameter larger than other portions, and is adjacent to each payout roll. The large-diameter portion of the other feeding roll may be disposed between the large-diameter portions. Further, a moving table control mechanism for raising the moving table by the moving table driving device may be provided according to the number of stacked sheets on the mounting table. In addition, the moving table control mechanism is provided by A. B. detecting means for detecting that the pressing member is in the normal pressing posture when pressed by the pressing member; When pressed by the pressing member, if there is no detection by the detecting means, the control unit may raise the moving table by the moving table driving device until the detecting means detects.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a folding and laminating apparatus for a rubber sheet in a tire manufacturing facility will be described below with reference to the drawings.
As shown in FIG. 8, the sheet folding / stacking apparatus is configured to fold and laminate a rubber sheet 2 on a pallet 1 exemplified as a mounting table in a zigzag (serpentine) form, and is disposed above the pallet 1. It has a guiding device 3 and a pair of right and left pressing units 4 arranged on both sides of the pallet 1.

The guiding device 3 is reciprocated in a pendulum-like manner in the left-right direction with the upper portion serving as a fulcrum by a driving device (not shown).
It has a pair of left and right feeding rolls 6 and a guide roll group 7 disposed on the left and right sides. A kneading device (not shown) and a forming device (not shown) are provided on the upstream side of the guiding device 3, and the rubber kneaded by the kneading device is formed into the rubber sheet 2 by the forming device.
It is guided to the guidance device 3. The width direction of the rubber sheet 3 is the front-back direction of the folding and laminating apparatus.

The unwinding roll 6 is arranged below the guiding device 3 and is driven to rotate. As shown in FIG. 3, the unwinding roll 6 sandwiches the rubber sheet 2 and unwinds it. It has a plurality of large diameter portions 10. Large diameter part 10
Is composed of a ring having a diameter larger than that of the other portion of the feeding roll 6 and is externally fitted and fixed to the main body 9 at regular intervals, and the other feeding roll 6 is located between the adjacent large-diameter portions 10 of each feeding roll 6. Is disposed. As a result, the rubber sheet 2 is sandwiched between the two feeding rolls 6 in a zigzag shape,
The large-diameter portion 10 bites into the rubber sheet 2 to prevent the rubber sheet 2 from shifting in the width direction (the front-back direction of the folding and laminating apparatus). The two guide roll groups 7 are arranged above the two feed rolls 6, and the distance between the guide roll groups 7 is increased toward the upper side.
Is guided between the two feeding rolls 6. Each guide roll is freely rotatable.

Each of the pressing units 4 includes a frame 12, a moving table 13, a moving table driving device 14, a pressing member 15,
It has a pressing member driving device 16, a guide member 17, and a moving table control mechanism.

The frame 12 stands upright and has a vertical guide portion (linear rail) 19.

The movable table 13 has a pair of upper and lower sliding parts (sliders) 21 on its outer side, and these sliding parts 21 are externally slidably fitted on the guide part 19 of the frame 12 in the vertical direction. By being combined, the moving table 13 is provided on the frame 12 so as to be movable in the vertical direction.

The moving table driving device 14 drives the moving table 13 in the vertical direction. A pair of upper and lower elevating sprockets 23, 24 provided at the upper and lower ends of the frame 12, and a hook between the sprockets 23, 24. Lifting chain 2 mounted
5, a driven gear 26 fixed to the lower elevating sprocket 24, a geared (hydraulic or electric) motor 27 with a brake provided at the lower end of the frame 12, and a motor 2
7 and a drive and driven gear 2
It has an interlocking chain 29 mounted between 8,26.

The pressing member 15 is provided on the movable base 13 so as to be vertically swingable, and protrudes inward from the movable base 13,
This presses the fold portion of the rubber sheet 2 on the pallet 1 and / or the vicinity thereof downward. B. a support shaft 32 disposed in the front-rear direction and rotatably supported by a pair of front and rear bearing bodies 31 on the inner side of the lower portion of the movable base 13;
Interlocking arm 33 fixed to the longitudinal center of support shaft 32
And C. A pair of front and rear pressing arms 34, one end of which is fixed to the front and rear ends of the support shaft 32 and the other end of which is a flat pressing portion 35; It has a flat pressing plate 36 provided between the pressing portions 35 of both pressing arms 34.

The pressing member driving device 16 swings the pressing member 15 to change the posture (position) between the pressing posture (position) and the pressing release posture (position), and interlocks with the swing of the guiding device 3. I have. The driving device 16 is composed of a fluid pressure cylinder such as an air cylinder or a hydraulic cylinder, and its tube 3
8, the middle part in the longitudinal direction is on the inner part of the upper part of the moving table 13,
The piston rod 41 is rotatably supported via a support shaft 39 in the front-rear direction and a pair of front and rear bearings 40, and the piston rod 41 is connected to the interlocking arm 34 of the pressing member 15.

The guide member 17 guides a fold portion formed by folding the rubber sheet 2 from the outside, and is provided on the inner side surface of the movable base 13 in an upright state.
The upper side is a slanted inclined part 43 that transitions outward toward the upper end, and the lower end part is an inclined inclined part 45 that transitions outwardly toward the lower end. The portion between the inclined portions 43 and 45 is a vertical portion 46 which is vertical.

The moving table control mechanism raises the moving table 13 step by step by the moving table driving device 14 in accordance with the number of rubber sheets 2 stacked on the pallet 1. As shown in FIG. And a control unit 49. Switch 4
Reference numeral 8 denotes a detection unit, which detects that the pressing member 15 is in the normal pressing posture when pressed by the pressing member 15. As the switch 48, various proximity switches such as a limit switch are used, which are built in the tube 38 of the pressing member driving device 16 (there may be provided on the tube 38), and are pressed by the pressing member 15. , The piston 51 (or the piston rod 41 or the like) of the pressing member driving device 16 is detected. When there is no detection by the switch 48 at the time of pressing by the pressing member 15, the control unit 49 causes the moving table driving device 14 to raise the moving table 13 until the switch 48 detects.

In the above configuration example, at the start of the work, as shown in FIG. 1, the moving table 13 of each pressing unit 4 is located at the lowest position, and each pressing member driving device 16 is reduced, so that each pressing member The pallet 1 exemplifying a mounting table is positioned between the pressing units 4 with the pressing unit 15 in the pressing release position.

The operation is started in this state. For example, as shown in FIG. 5, the rubber sheet 2 is fed out from the state in which the guiding device 3 is swung to the left, and is brought into contact with the pallet 1. Then, while further pulling out the rubber sheet 2 from the guiding device 3, the guiding device 3 is swung rightward with the upper portion as a fulcrum, then inverted, swung leftward, and the like is repeated. .

Thus, after the lower end of the rubber sheet 2 is placed from the left end to the right end of the pallet 1 as shown in FIG. 6, the rubber sheet 2 is placed on the pallet 1 as shown in FIG. It is folded at the right end. At this time, the fold portion formed by folding the rubber sheet 2 is aligned with the guide member 17.
Thus, the pallet 1 is guided from the outside, and is prevented from protruding to the right side of the pallet 1.

Immediately after the rubber sheet 2 is folded as described above, the pressing member driving device 1 of the right pressing unit 4
6 extend in conjunction with the reversal of the guidance device 3, and the pressing member 15
Is swung down. At this time, since there is nothing to prevent the downward swinging of the pressing member 15, the piston 51 of the pressing member driving device 16 is connected to the tube 3 as shown by the phantom line in FIG.
8, the pressing member 15 assumes the normal pressing posture, and presses the fold portion of the rubber sheet 2 and / or the vicinity thereof downward. Switch 4 of the moving table control mechanism
Since the piston 8 detects the piston 51, the control unit 49 of the moving table control mechanism does not operate the moving table driving device 14, and the moving table 13 maintains the state of the lowest position.

Also, when the rubber sheet 2 is folded at the left end of the pallet 1, the left pressing unit 4 operates in the same manner as described above, and the pressing member 15 causes the fold portion of the rubber sheet 2 and / or its Press the nearby part downward.
Immediately after the pressing of the pressing member 15 of the right pressing unit 4, or immediately after the rubber sheet 2 is folded back at the left end of the pallet 1, or at an appropriate time between the two, the pressing member driving device of the right pressing unit 4 16 is reduced and the pressing member 15
Is swung upward to assume the pressure release position, whereby
The pressing member 15 does not hinder the folding of the rubber sheet 2.

By repeating the above operation, the rubber sheets 2 are folded and stacked in a zigzag (self-folding) manner on the pallet 1. When the number of stacked rubber sheets 2 increases, the pressing of the pressing member 15 is performed. At times, due to the laminated rubber sheets 2, the pressing member driving device 16 does not sufficiently expand, and the pressing member 15 does not assume the normal pressing posture. In this case, the piston 51 of the pressing member driving device 16 does not reach the end of the tube 38, and the switch 4
Since the piston 8 does not detect the piston 51, the control unit 49 of the moving table control mechanism operates the moving table driving device 14 to move the moving table 13 upward.

Then, in response to the rise of the moving table 13, the pressing member driving device 16 gradually extends, the pressing member 15 assumes a normal pressing posture, and the switch 48 of the moving table control mechanism sets the piston of the pressing member driving device 16 to the piston position. 51 is detected. As a result, the control unit 49 of the moving table control mechanism operates the moving table driving device 1.
4 is stopped, and the movable base 13 is stopped. In this way, as shown in FIG. 8, according to the number of rubber sheets 2 stacked on the pallet 1, the moving table control mechanism changes the moving table driving device 1.
The moving table 13 is raised stepwise through the step 4, and the pressing by the pressing member 15 is always performed well.

As described above, each time the rubber sheet 2 is folded on the pallet 1, the fold portion of the rubber sheet 2 formed by this folding and / or the vicinity thereof is
Since the rubber sheet 2 is pressed downward by the pressing member 15, the rubber sheet 2 is not stacked on the pallet 1 while the fold portion of the rubber sheet 2 is largely raised. Therefore, the rubber sheets 2 can be compactly laminated on the pallet 1 and a large amount of the rubber sheets 2 can be laminated on the pallet 1 even when the bulk (volume) of the rubber sheet 2 on the pallet 1 is the same as the conventional one.

Further, the rubber sheet 2 is sandwiched between the two feeding rolls 6 in a zigzag manner, and the large diameter portion 10 bites into the rubber sheet 2 so that the rubber sheet 2 is moved in the width direction (the front-back direction of the folding and laminating apparatus). In addition, the rubber sheet 2 is prevented from deviating, and the guide member 17 guides the fold portion of the rubber sheet 2 to prevent the rubber sheet 2 from protruding to the side of the pallet 1. It does not protrude from the pallet 1 greatly. Therefore, the rubber sheet 2 protruding from the pallet 1
Therefore, there is no hindrance to transportation or a large storage (stock) space is required.

In the above embodiment, the present invention is applied to a rubber sheet folding and laminating apparatus.
The present invention is also applicable to other sheet folding / stacking devices.

[0027]

As described in detail above, according to the present invention,
Sheets can be compactly stacked on the mounting table, and a large number of sheets can be stacked on the mounting table even if the bulk of the sheet on the mounting table is the same as that of the related art. According to claims 2 and 3,
The sheet does not protrude greatly from the mounting table, and the sheet protruding from the mounting table does not hinder transportation or require a large storage space. Further, according to the fourth aspect, the pressing member can be automatically set to the optimum height, and the pressing by the pressing member can always be performed satisfactorily.

[Brief description of the drawings]

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

FIG. 2 is a side view of FIG.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is an explanatory diagram showing a moving table control mechanism according to an example of an embodiment of the present invention.

FIG. 5 is an operation state diagram of FIG. 1;

FIG. 6 is an operation state diagram of FIG. 1;

FIG. 7 is an operation state diagram of FIG. 1;

FIG. 8 is an operation state diagram of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pallet (mounting table) 2 Rubber sheet 3 Guiding device 4 Pressing unit 6 Feeding roll 10 Large diameter portion 12 Frame 13 Moving table 14 Moving table driving device 15 Pressing member 16 Pressing member driving device 17 Moving table control mechanism 48 Switch 49 Control section

Claims (5)

[Claims] 1. A folding and stacking apparatus for a sheet to be fed out by a guide device which swings back and forth in a left-right direction, and is folded in a zigzag manner on a mounting table below the guide device. , A pair of left and right pressing units are provided, and each pressing unit includes: An upright frame; B. a movable table movably provided in the frame in a vertical direction; A moving table driving device for driving the moving table; A pressing member provided on the movable table so as to be swingable in the vertical direction, and after the sheet is folded on the mounting table, the pressing member presses a fold portion of the sheet formed by the folding and / or a portion in the vicinity thereof downward; . A sheet folding / stacking device having a pressing member driving device for driving a pressing member. 2. The sheet folding and stacking apparatus according to claim 1, wherein the movable table is provided with a guide member for guiding a fold portion of the sheet from outside. 3. The guide device has a pair of left and right pay-out rolls that feed out with a sheet interposed therebetween, and each pay-out roll is formed with a plurality of large-diameter portions having a diameter larger than other portions. 3. The sheet folding and stacking apparatus according to claim 1, wherein the large-diameter portion of the other feeding roll is disposed between the adjacent large-diameter portions. 4. The sheet folding apparatus according to claim 1, further comprising a moving table control mechanism for raising the moving table by the moving table driving device according to the number of stacked sheets on the mounting table. Laminating equipment. 5. The moving table control mechanism comprises: A. B. detecting means for detecting that the pressing member is in the normal pressing posture when pressed by the pressing member; 5. The sheet folding and stacking apparatus according to claim 4, further comprising a control unit that raises the moving table by the moving table driving device until the detecting means detects the detection when there is no detection by the detecting means at the time of pressing by the pressing member.