JP3882620B2 - Film folding device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a film folding device for folding a long film in a zigzag shape, and in particular, while the film is fed downward by a pinch roller, the pinch roller is reciprocated in a horizontal direction so that the film is zigzag-shaped. The present invention relates to a film folding apparatus that can be folded into two.
[0002]
[Prior art]
In a manufacturing factory for long films such as agricultural vinyl chloride (vinyl chloride) films, when the manufactured films are packed, the films are packed in a zigzag shape.
[0003]
As a device for packing a film in a zigzag shape, Japanese Patent Laid-Open No. 6-210494 discloses a horizontal direction in which a pinch roller for continuously feeding the film downward is perpendicular to the axis of the pinch roller by an air cylinder. Describes a film folding device which is adapted to reciprocate.
[0004]
[Problems to be solved by the invention]
In the conventional film folding apparatus in which the pinch roller is reciprocated by the air cylinder, the start and stop of the forward movement of the pinch roller and the start and stop of the backward movement are frequently repeated. And acceleration and deceleration at the time of stop are large. That is, the pinch roller repeatedly starts and stops suddenly. For this reason, the load on the sliding wear and the support mechanism of the pinch roller is large.
[0005]
Further, since the air cylinder device generates a large exhaust sound when switching between forward movement and backward movement, the operation noise is large and the working environment is deteriorated.
[0006]
SUMMARY OF THE INVENTION An object of the present invention is to provide a film folding apparatus that eliminates the above-mentioned conventional problems, that allows smooth reciprocation of a pinch roller, and that has a remarkably low work noise level.
[0007]
[Means for Solving the Problems]
The film folding apparatus of the present invention includes a pinch roller for feeding the film downward, a guide member for guiding the pinch roller so as to be movable in a horizontal direction perpendicular to the axis of the pinch roller, and the pinch roller. In the film folding apparatus having a drive mechanism that reciprocates along the guide member, the drive mechanism includes an endless rotating body extending along the guide member, and the pinch by the endless rotation of the endless rotating body. an interlocking member for reciprocating along the roller to the guide member, Ri Na comprise, the pinch roller is supported on a pinch roller support member, the interlocking member is provided on the pinch roller support member A guide rail extending in a direction substantially orthogonal to the guide direction of the guide member, and a moving member attached to the endless rotating body and capable of reciprocating along the guide rail. It is to characterized in that it comprises a.
[0008]
In such a film folding apparatus, since the pinch roller reciprocates in conjunction with the endless rotation of the endless rotating body, switching between the forward movement and the backward movement is performed very gently and smoothly. As a result, the load on the pinch roller is remarkably reduced as compared with the folding device using the conventional air cylinder device.
[0009]
In the film folding apparatus of the present invention, the pinch roller is supported by a pinch roller support member, and the interlocking member is provided on the pinch roller support member, and is substantially perpendicular to the guide direction of the guide member. an extending Mashimashi guide rails, the attached endless rotary body, ing provided with a moving member which can reciprocate along the guide rail. By having such a configuration, the moving member with the endless rotation of the endless rotary body is an endless rotation, the guide rail by the moving member moves the pinch roller advancing and retracting direction, the pinch roller forward and backward together with the guide rail .
[0010]
In the film folding apparatus of the present invention, the endless rotating body is preferably a chain and is spanned between at least one pair of sprocket wheels, and at least one sprocket wheel is preferably driven by a prime mover. . Since no slip occurs between the chain and the sprocket, the pinch roller reliably reciprocates at a constant pitch.
[0011]
The pinch roller is preferably composed of a pair of rollers, and at least one of the rollers is preferably movable in the contact / separation direction with respect to the other roller by a cylinder device. Thereby, the operation | work which puts a film between rollers becomes easy.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0013]
FIG. 1 is a perspective view of a film folding apparatus according to an embodiment of the present invention, and FIGS. 2 to 4 are side views showing a film folding operation of the folding apparatus. FIGS. 5 and 6 are plan views showing the operation of the driving mechanism of the folding device, and FIGS. 7A and 7B are side views showing the feeding direction of the film to the pinch roller in the folding device. It is.
[0014]
As shown in FIG. 1, the axial direction of one end side in the longitudinal direction of the substantially rectangular box-like gantry 10 (hereinafter, the longitudinal direction of the gantry 10 is the front-rear direction and the one end side is the front). A pair of upper and lower inlet rollers 12 and 12 for feeding the film in the horizontal direction and a pair of width-shifting rollers 14 and 14 for shifting the film in the horizontal direction with the axial direction as the vertical direction are provided.
[0015]
A pair of main guide rails (hereinafter simply referred to as guide rails) extending in the longitudinal direction of the gantry 10, that is, the front-rear direction and the horizontal direction, are provided on the lower surface side of the left and right upper beams 16 and 16 of the gantry 10. ) 18 and 18 are arranged in parallel to each other, and a plate-like pinch roller support member 20 that is movable along the main guide rail 18 is provided. The pinch roller support member 20 is disposed with its plate surface in the horizontal direction, and slide anchors 22 engaged with the guide rails 18 are fixed to the four corners of the upper surface, respectively. The slide anchor 22 can reciprocate along the guide rail 18. The main guide rail 18 and the slide anchor 22 constitute a guide member that guides the pinch roller support member 20 so as to be movable in the horizontal direction.
[0016]
A drive mechanism 24 that reciprocates the pinch roller support member 20 along the main guide rail 18 is provided between the main guide rails 18 and 18. As shown in FIGS. 5 to 8, the drive mechanism 24 is hung between a pair of sprocket wheels 26 and 28 provided on the front side and the rear side of the gantry 10 and the sprocket wheels 26 and 28, respectively. A chain 30 as an endless rotating body and an inverter control motor 32 as a prime mover for rotationally driving the sprocket wheel 26 are provided.
[0017]
The motor 32 is installed on a pedestal 38 installed between the upper beams 16 and 16 above the sprocket wheel 26.
[0018]
The sprocket wheels 26 and 28 are fixed to rotating shafts 34 and 36, respectively. A rotating shaft 34 of the sprocket wheel 26 is connected to the motor 32.
[0019]
The rotation shaft 36 of the sprocket wheel 28 is rotatably held by a bearing portion 42 of a chain tensioner 40 provided above the sprocket wheel 28. The chain tensioner 40 adjusts the tension of the chain 30 by adjusting the front and rear positions of the sprocket wheel 28.
[0020]
As shown in FIGS. 5 and 6, a guide rail 44 extending in a direction substantially orthogonal to the longitudinal direction of the main guide rail 18 is provided near the center of the upper surface of the pinch roller support member 20. A moving member 46 is slidably engaged with the guide rail 44. An interlocking piece 48 attached to the chain 30 is connected to the moving member 46 via a rotating shaft 48a. The axis of rotation of the rotary shaft 48a is the vertical direction.
[0021]
The guide rail 44, the moving member 46, and the interlocking piece 48 constitute an interlocking member that moves the pinch roller support member 20 back and forth by endless rotation of the chain 30. That is, in FIGS. 5 and 6, when the motor 32 is operated and the sprocket wheel 26 is rotationally driven in the counterclockwise direction (the direction of arrow D in FIG. 5), the chain 30 moves between the sprocket wheels 26 and 28. It rotates endlessly so as to go around in the order of FIGS. The moving member 46 attached to the chain 30 slides along the guide rail 44, and the pinch roller support member 20 reciprocates back and forth along the main guide rail 18.
[0022]
As shown in FIG. 7, on the lower surface side of the pinch roller support member 20, a pair of front and rear for feeding the film F sent from the entrance roller 12 and the width adjusting roller 14 downward is provided. Pinch rollers 50 and 52 are provided. The pinch rollers 50 and 52 are arranged such that their axial directions are orthogonal to the extending direction of the guide rail 18.
[0023]
A pair of roller support plates 54, 54 hang downward from the left and right side edges on the front side of the pinch roller support member 20, and both ends of the front pinch roller 50 are supported by the roller support plates 54, 54. ing. In addition, a pair of roller support arms 56, 56 project downward from the left and right side edges of the pinch roller support member 20 adjacent to the rear side of the roller support plates 54, 54. Both ends of the rear pinch roller 52 are supported by 56 and 56. The support arm 56 is rotatable in the front-rear direction with the base end side as the rotation center.
[0024]
The support arm 56 is connected to a piston rod 60 of a pinch cylinder 58 that can be moved back and forth in the front-rear direction. The pinch cylinder 58 is installed on the lower surface side of the pinch roller support member 20 via the bracket 62. The pinch cylinder 58 moves the piston rod 60 forward and backward by operating an air manual valve (not shown), and rotates the support arm 56 back and forth via the piston rod 60. The support arm 56 and the pinch cylinder 58 allow the rear pinch roller 52 to move in the contact / separation direction with respect to the front pinch roller 50.
[0025]
The front pinch roller 50 is a motor pulley with a built-in driving device. When a switch (not shown) is turned on, the pinch roller 50 rotates in the direction of arrow R in FIG. 9 (a).
[0026]
The air manual valve is operated to bring the rear pinch roller 52 closer to the pinch roller 50, and the switch is turned on while the film F is sandwiched between the pinch rollers 50 and 52. Then, the film F is sent out downward.
[0027]
A case 64 for receiving the film F sent downward by the pinch rollers 50 and 52 is placed under the gantry 10. Naturally, the length of the internal space of the case 64 in the front-rear direction is larger than the range in which the pinch roller support member 20 reciprocates by the drive mechanism 24. When the film F is folded in the case 64, the pinch roller support member 20 is disposed at the front end position of the reciprocating range as shown in FIG. , 52 is started, the drive mechanism 24 is started almost simultaneously with the leading edge of the film F reaching the bottom surface of the case 64, and the reciprocation of the pinch roller support member 20 is started. It is preferable to do so.
[0028]
Details of the operation of the film folding apparatus constructed as described above will be described below with reference to FIGS.
[0029]
When the film F is folded, the air manual valve (not shown) is operated in advance to separate the pinch roller 52 from the pinch roller 50. In addition, a case 64 is disposed below the gantry 10. As shown in FIG. 2, before the film F folding operation is started, the pinch roller support member 20 is disposed at the front end position of the reciprocating range.
[0030]
Next, the leading end of the film F cut to the length accommodated in one case 64 or cut after folding is passed between the entrance rollers 12 , 12 and between the width-adjusting rollers 14 , 14. Feed between the pinch rollers 50 and 52. Next, the air manual valve is operated to bring the pinch roller 52 close to the pinch roller 50, and the pinch rollers 50, 52 are brought into close contact with each other so that the leading end side of the film F is sandwiched therebetween (FIG. 2). .
[0031]
Thereafter, when the switch (not shown) is turned on and the pinch roller 50 is rotated, the pinch rollers 50 and 52 are rotated in opposite directions, whereby the film F is continuously sent out downward.
[0032]
As the film F is fed out, the drive mechanism 24 is activated almost simultaneously with the leading edge of the film F reaching the bottom surface of the case 64, and the pinch roller support member 20 starts to move backward (FIG. 3). Thereafter, the pinch roller support member 20 repeats reciprocating back and forth in conjunction with the endless rotation of the chain 30, whereby the film F is deposited in a zigzag shape as shown in FIG. 4.
[0033]
After the film F is fed into the case 64 for a predetermined length, the pinch roller 50 stops rotating and the drive mechanism 24 is stopped. If the film F has not been cut in advance, the rear end of the film F is Detach and complete the film F folding operation.
[0034]
In this film folding apparatus, the pinch roller support member 20 reciprocates in conjunction with the endless rotation of the chain 30, so that the switching from the forward movement to the backward movement or from the backward movement to the forward movement is extremely gradual. Performed smoothly. For this reason, the load on the support mechanism of the pinch rollers 50 and 52 such as the pinch roller support member 20 is remarkably small as compared with the case where the air cylinder is used for reciprocating movement as in the conventional folding device.
[0035]
Further, in this film folding apparatus, the forward movement and the backward movement of the pinch roller support member 20 are smoothly switched in conjunction with the endless rotation of the chain 30, so that the forward movement as in the air cylinder apparatus is performed. A large operating noise is not generated when switching between the reverse operation and the return operation, and the working environment is kept good. In particular, in the folding device of the present embodiment using the electric motor 32 as the prime mover of the drive mechanism 24, the work noise level is extremely low.
[0036]
In the present invention, by changing the endless rotating body to one having a different circulation length, the reciprocating stroke of the pinch roller can be changed and the folding width of the film can be changed.
[0037]
In the above-described embodiment, a chain is used as the endless rotating body, but other endless rotating bodies such as a toothed rubber belt may be used instead of the chain.
[0038]
【The invention's effect】
As described above in detail, according to the present invention, there is provided a film folding apparatus in which the reciprocating motion of the pinch roller is smooth and the working noise level is extremely low.
[Brief description of the drawings]
FIG. 1 is a perspective view of a film folding apparatus according to an embodiment of the present invention.
FIG. 2 is a side view showing a film folding operation of the folding apparatus of FIG. 1;
FIG. 3 is a side view showing a film folding operation of the folding device of FIG. 1;
4 is a side view showing a film folding operation of the folding device of FIG. 1. FIG.
5 is a plan view showing the operation of the drive mechanism of the reciprocating device in FIG. 1. FIG.
6 is a plan view showing the operation of the drive mechanism of the reciprocating device of FIG. 1. FIG.
7 is a side view showing a method of feeding a film to a pinch roller in the reciprocating device of FIG. 1. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Base 12 Entrance roller 14 Width-shift roller 18 Main guide rail 20 Pinch roller support member 22 Slide anchor 24 Drive mechanism 26, 28 Sprocket wheel 30 Chain 32 Motor 34, 36 Rotating shaft 40 Chain tensioner 42 Bearing portion 44 Guide rail 46 Moving member 48 Interlocking piece 50, 52 Pinch roller 56 Support arm 58 Pinch cylinder 64 Case

Claims (2)

A pinch roller for feeding the film downward;
A guide member that guides the pinch roller movably in a horizontal direction perpendicular to the axis of the pinch roller;
A film folding device having a drive mechanism for reciprocating the pinch roller along the guide member;
The drive mechanism has an endless rotating body extending along the guide member;
An interlocking member for reciprocating the pinch roller along the guide member by endless rotation of the endless rotation body;
Ri name with a,
The pinch roller is supported by a pinch roller support member,
The interlocking member is
A guide rail provided on the pinch roller support member and extending in a direction substantially orthogonal to the guide direction of the guide member;
A moving member attached to the endless rotating body and capable of reciprocating along the guide rail;
Folding device of films characterized in that it comprises a. Oite to claim 1, wherein the endless rotary body is a chain, and bridged between at least one pair of sprocket wheels, folding of the film, characterized in that at least one sprocket wheel is driven by a prime mover apparatus.

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