JPH08165051A - Sheet trimming device - Google Patents

Abstract

PURPOSE: To improve a cut end of a sheet with accurate cutting made capable by winding the fed sheet (or film) on a fixed comb roll and a pair of moving comb rolls in both sides of this fixed comb roll, moving the sheet in an axial direction brought into contact with a fixed blade in a moving comb roll side, and applying a side pressure so as to start cutting. CONSTITUTION: A fixed comb roll 34, formed with both end parts in comb teeth shape, is fixed to a roll shaft 32, also to arrange moving comb rolls 35, 35', having the teeth of a comb advanced into the fixed comb roll 34 with fixed blades 37, 37' circular annularly fixed to an intermediate groove part side surface, symmetrically in both sides of the fixed comb roll 34. Disk-shaped cutters 42, 42', supported to shear cut holders 41, 41', are brought into contact and separated relating to the fixed blades 35, 35', so as to perform cutting a sheet. These shear cut holders 41, 41' are supported to a guide groove in a sheet width direction and to moving supports 51, 51' provided with a moving nut, and a cut width is made adjustable by operating handles 55, 55'.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an edge trimming device for aligning the width of a thick sheet or a hard film.

[0002]

2. Description of the Related Art The structure and function of a conventional shear cutter for cutting the edges of a sheet will be described with reference to FIGS. 4 and 5 by taking the structure proposed in Japanese Utility Model Publication No. 55-20412 as an example. 4 and 5, 10 and 10 'are upper blades supported by the rotary drive shafts 11 and 11', respectively.
Reference numerals 2 and 12 'are lower blades supported by the rotary drive shafts 13 and 13', respectively. The rotary drive shafts 13 and 13 'are connected at their opposite ends with each other by a coupling 14, which is used when the lower blade is replaced.
3'moves on one of the axes to drive the same drive shaft 13, 1
It is configured so that the connection of 3'can be released to form a gap between both shafts 13 and 13 '. A sprocket 15 connected to a drive mechanism (not shown) is attached to the other ends of the drive shafts 13 and 13 ', and a sprocket 17 attached to one end of the rotary shaft 16 via a chain is attached to the sprocket 15. It works together. 18, 1
Reference numeral 8'denotes a gear fixed to the rotary shaft 16, which is the gears 18, 1
Gears 19, 19 'fixed to the rotary drive shafts 11, 11' mesh with 8 ', and when the rotary shaft 16 rotates, the rotary drive shafts 11, 11' also rotate with the gears 18, 19, 18 ', 1'.
Rotate in the same direction at the same speed through 9 '. Further, the rotary drive shafts 11 and 11 ′ are arms 20 with the rotary shaft 16 as a fulcrum,
The upper blades 10, 10 'are attached to the gears 18, 19, 18', 1 by the rotation of the rotary shaft 16.
It is transmitted via 9 '.

Reference numerals 21, 21 'are springs and upper blades 10, 1
It is pressing toward 0 ', and the rotary drive shafts 11, 1
1'is provided with electromagnets 22 and 22 'that attract the upper blades 10 and 10' against the pressing force of the springs 21 and 21 '. The springs 21 and 21 'and the electromagnets 22 and 22' are attached to the upper blades 10 and 10 'in the drawing, but they may be attached to the lower blades 12 and 12'. Reference numeral 23 is a movement adjusting screw having left and right screws, and has a handle 24. By rotating the screw 23, the upper blade 10, 10 'can be moved to an axial position in which the upper blade 10, 10' comes into contact with the lower blade 12, 12 '. is there. Reference numeral 25 denotes an arm having a rotary shaft 16 as a fulcrum, which is engaged with a piston rod of an air cylinder 26. The upper blades 10 and 10 'are configured to be moved toward and away from the lower blades 12 and 12'. In the drawing, the upper blade 1
The case of moving 0, 10 'up and down is shown.
There is no problem even if 2, 12 'are moved up and down.
Here, to reverse the upper and lower blades, the rotary drive shaft 1
It may be considered that the upper mechanism including the upper blade and the rotary shaft 16 are all rotated by 180 ° around the center 3 and 13 ′. Reference numeral 27 in the figure denotes a sheet such as a film or paper.

Next, the operation will be described. Upper blades 10, 10 '
Is a sprocket 15, 1 from a drive mechanism (not shown).
7, the rotary shaft 16, the gears 18, 19, 18 ', 19' and the rotary drive shafts 11, 11 'are driven to move the lower blade 12,
12 ′ is driven via a sprocket 15, rotary drive shafts 13 and 13 ′, and a coupling 14. Next, the movement adjusting screw 23 is rotated by operating the handle 24, and the upper blade 1
0 and 10 'are moved to predetermined positions in the axial direction with respect to the lower blades 12 and 12' via the arm 20 guided by the rotating shaft 16 and the rotary drive shafts 11 and 11 '. Next, by operating the air cylinder 26, the upper blades 10 and 10 'are lowered through the arm 25 with the rotary shaft 16 as a fulcrum (state of FIG. 5), and the handle 24 is operated again to move the upper blades 10 and 10' to the arrow a. , B in the axial direction to contact the lower blades 12 and 12 ′ to cut the sheet 27 such as film or paper. In addition,
After raising the upper blades 10 and 10 'from the lower blades 12 and 12' at predetermined positions, the upper blade 1 is operated again by operating the air cylinder 26.
When lowering 0, 10 ', the electromagnets 22, 22' are excited at the same time as the solenoid valve for lowering the air cylinder, and the upper blades 10, 1,
0'is attracted by the electromagnets 22 and 22 ', and the upper blades 10 and 10' descend while keeping the interval A. After the upper blades 10 and 10 'are lowered, the excitation of the electromagnets 22 and 22' is released (by a timer or the like).
0'and the lower blades 12 and 12 'are brought into contact with each other, and the springs 21 and 21' are further pressed to keep the upper blades and the lower blades in contact with each other uniformly, so that the sheet 27 can be cut.
Therefore, when the upper blades 10 and 10 'are lowered, the upper blades and the lower blades are not inadvertently collided with each other and the upper blades 10 and 10' are not damaged. The upper blades 10 and 10 'can be removed by removing bolts (not shown), and the lower blades 12 and 12' can be replaced with new blades by using the gap generated by moving the coupling 14 to one side. Is.

[0005]

In the conventional sheet edge trimming cutter as described above, the sheet is cut while floating in the air. Therefore, when the sheet tension fluctuates or meanders, the cut edge of the sheet is disturbed. , Resulting in unevenness or rough edges. Also, when changing the width of the seat, it was necessary to stop the machine. The present invention solves the problems in the conventional sheet edge trimming device, and provides a sheet edge trimming device capable of obtaining a good sheet cut edge and an accurate width, and further capable of changing the trimming width even during operation. It is what

[0006]

For this reason, the present invention is arranged in the width direction of continuously fed sheets, films, etc., and has a pair of annular blades at both edges of the sheet or film,
Cut with a disc-shaped rotary cutter that is in contact with this,
In a sheet edge trimming device for uniformly aligning the width of a sheet, a film, etc., a roll shaft connected to the output shaft of a motor which is installed in the width direction of the sheet or film and whose rotational speed and rotational torque are controlled, and the same roll shaft. The roll has a frame that rotatably supports at both ends, a fixed comb roll that is fixed to the roll shaft, and has both ends formed in a comb shape, and comb teeth that interdigitate with the comb teeth of the fixed comb roll. The shaft is movable in the axial direction by being restrained in the direction of rotation, and the annular fixed blade is fixed to the side surface of the intermediate groove of the roll surface, and the pair of movable combs symmetrically placed on both sides of the fixed comb roll. A pair of symmetrical shear cut holders having a roll and a freely rotating disc-shaped cutter, and a mechanism for moving the cutter so that it can be brought into contact with and separated from the fixed blade of the movable shaft roll, and the shear cut holder. A pair of symmetrical moving supports, which are rotatably supported in the axial direction by bearings to support the moving comb rolls, and are provided with guide grooves and moving nuts in the seat width direction, and fixed to the frame. It is composed of a pair of guide rails that engage with and guide a moving support, and a pair of moving screws and a handle symmetrically attached to the frame, and wraps and cuts a sheet or film on a fixed comb roll and a moving comb roll. However, the width of the sheet or film can be adjusted even during operation, and this is a means for solving the problem.

[0007]

By the above means, the fed sheet or film is wound around the fixed comb roll and the pair of moving comb rolls which are in a state of being interdigitated with the comb teeth on both sides thereof. The fixed comb roll and the movable comb roll are rotationally driven by a motor via a roll shaft. Further, the motor controls the rotation speed and the rotation torque to apply an appropriate tension to the sheet or film wound around the roller to prevent the slack. The free-rotating disc-shaped cutter provided in the shear cut holder supported by the moving support is moved toward the sheet or film surface by an actuator built in the shear cut holder from a position distant from the sheet surface, and the sheet or film It stops at a position slightly intruding from the film surface, then moves in the axial direction to come into contact with the fixed blade on the side surface of the moving comb roll, a slight lateral pressure is applied, and it rotates together with the fixed blade to start cutting. Here, when the moving screw is turned by the manual handle of the film width adjusting mechanism, the moving support moves, the shear cut holder and the moving comb roll supported by this move, and the cutting position of the sheet or film is changed. The width can be changed. Since the moving comb roll is constrained to rotate by the roll shaft,
Even if the roll moves, the comb teeth of the roll can move on the rotating shaft while being in a state of being in the comb teeth of the fixed comb roll. The sheet or film is supported by the comb portion of the roll and does not hang down in the width direction. The movable support holds the shear cut holder, and at the same time, supports the movable comb roll by rotatably restraining the axial direction via bearings. The relative position of the fixed blades does not change. As described above, the sheet or film is cut in a state in which it is wound on a roll by being given an appropriate tension, so that an accurate cut width and a good cut edge can be obtained. Moreover, the above operations can be performed even while driving, so the adjustment time can be greatly saved.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 3 show the embodiments of the present invention. 1 is a front view (partially sectional view) showing the right half of the sheet trimming device having a substantially symmetrical shape, FIG. 2 is a sectional view taken along line CC of FIG. 1, and FIG. FIG. 7 is an operation diagram showing a moving state of a comb roll and a cutter when changing the tool. Now, the sheet 30 is wound around and held by a roll arranged in the width direction of the sheet 30 that is continuously fed. The roll is divided into a fixed comb roll 34 and a pair of moving comb rolls 35 and 35 'placed on both sides of the fixed comb roll 34. Further, the motor 33 whose speed and rotational torque are controlled has frames 31 and 31 'through the motor support 38 (hereinafter, the left and right symmetrical parts of the apparatus have the same numbers, and the left parts have the numbers appended with'). ) Is attached to. Both ends of the roll shaft 32 installed in the width direction of the seat 30 are rotatably supported by the frame 31, and the shaft end on one side is coupled to the output shaft of the motor 33 by the coupling 39. A fixed comb roll 34, which is formed in a comb-teeth shape on both sides in the axial direction, is fixed to an intermediate portion of the roll shaft 32. Further, on both sides of the fixed comb roll 34 on the roll shaft 32, the rotation direction is constrained by moving keys 49, 49 'capable of moving by engaging with the key grooves 32a, 32a' machined on the roll shaft 32, and in the axial direction. A pair of movable comb rolls 35, 35 'are provided. The moving keys 49, 49 'are fixed to the moving comb rolls 35, 35'. The moving comb rolls 35, 35 'are also fixed comb rolls 3.
4 has comb teeth of the same shape, and the comb teeth have a fixed comb roll 34.
The circumferential position is determined so as to be inserted into the comb teeth.

Further, annular fixed blades 37, 37 'and ear guide rolls 36, 36' are fixedly attached to the ends of the movable comb rolls 35, 35 'opposite to the comb teeth. The inner end surface of the ear guide roll 36, 36 'has a fixed blade 37,
Separated from 37 ', the cutter 42 forms a groove in which the cutter 42 can freely move in and out, and a bearing 62 is fitted to the outer end portion. A stay 60 is fixed to the frames 31 and 31 ', and a pair of guide rails 61 and 61' is fixed to the stay 60. In the moving supports 51, 51 ′, the guide portions 51 b, 51 b ′ formed by the guide grooves are provided with the guide rails 6.
It is possible to move in the width direction of the seat 30 by being guided by 1, 61 '. The moving supports 51, 51 'are provided with moving nuts 53, and the bearings 57, 57' and the shaft support 5 are provided at symmetrical positions of the frames 31, 31 'and the stay 60.
Rotatably mounted via 8, 58 ', nut 5
The rotation of the moving screws 54 and 54 ′ screwed with the screw 3 causes the sheet 30 to be moved in the width direction. Moving screw 54,
54 'is rotationally driven by manual handles 55, 55', and its rotation is fixed by lock levers 56, 56 '.

Shear cut holders 41, 41 'are fixedly mounted on the moving supports 51, 51', and further, support arms 51a, 5 integral with the moving supports 51, 51 '.
Since 1a 'supports the outer ring of the bearing 62 attached to the moving comb rolls 35, 35', the relative positions of the shear cut holders 41, 41 'and the moving comb rolls 35, 35' are fixed. The shear cut holders 41, 41 'have a freely rotating disc-shaped cutter 42, and move the cutter 42 so that it can be moved toward and away from the fixed blades 37, 37' of the movable comb rolls 35, 35 '. Vertical cutter 42
And a pneumatic cylinder 44 for moving the cutter 42 left and right.

The operation of the present embodiment having the above-mentioned structure will be described. The sheet 30 sent in is a fixed comb roll 34, and a pair of movable combs on both sides of which are interdigitated with comb teeth. It is wound around rolls 35 and 35 '. Fixed comb roll 34 and movable comb rolls 35, 35 '
Is rotationally driven by a motor 33 via a roll shaft 32. The motor 33 is controlled in speed and rotational torque, and applies appropriate tension to the sheet 30 wound around the roller to prevent loosening. The freely rotating disc-shaped cutter 42 provided on the shear cut holders 41, 41 'supported by the moving supports 51, 51' is a pneumatic cylinder 4 for raising and lowering the cutters built in the shear cut holders 41, 41 '.
3 moves toward the surface of the sheet 30 and stops at a position slightly intruding from the surface of the sheet 30, and then moves axially by the pneumatic cylinder 44 for lateral movement of the cutter with built-in shear-cut holders 41, 41 'to move the comb roll. Three
5, 35 'is in contact with the fixed blades 37, 37' on the side surfaces, a slight lateral pressure is applied, and the fixed blades 37 are rotated together to start cutting.

Next, the sheet width adjustment will be described with reference to FIG.
FIG. 3A shows the case where the seat width Wa is the widest, and FIG.
(B) shows the case where the sheet width Wb is the narrowest. As shown in FIG. 3, when the moving screws 54, 54 'are rotated by the manual handles 55, 55', the moving support 5
1, 51 'move a distance L, L', and the shear cut holders 41, 41 'and the moving comb roll 3 supported thereby
It is possible to change the sheet width by changing the cutting positions of the sheet 30 by moving the distances L and L'of 5, 35 '. Since the moving comb rolls 35, 35 'are restricted in the rotation direction by the roll shaft 32, even if the rolls 35, 35' move, the comb teeth of the rolls remain in the state of being inserted into the comb teeth of the fixed comb roll 34. Move on the roll axis. The sheet 30 is supported by the comb portion of each roll and does not hang down in the width direction. Sheet 30
The edge portion (ear portion) is supported by the ear guide roll 36, and also does not hang down here. Mobility support 5
1, 51 ′ holds shear cut holders 41, 41 ′, and at the same time, supports movable comb rolls 35, 35 ′ via bearings 62 so as to rotatably restrain the axial direction, so that movable supports 51, 51 ′ are supported. Even if the blade moves, the shear cutting holders 41, 41 'and the fixed blades 3 of the moving comb rolls 35, 35'
The relative position of 7 is always the same. Since the sheet 30 is cut in a state in which it is wound around a roll by being given an appropriate tension as described above, unevenness and rough edges due to disturbance of the sheet cut due to tension fluctuation, meandering, etc. do not occur, A precise cutting width and a good cut can be obtained. Moreover, since such a cutting width adjusting operation can be performed even while the apparatus is in operation, the adjusting time can be greatly shortened and the production efficiency can be improved.

[0013]

As described in detail above, according to the sheet edge trimming device of the present invention, the sheet or film is wound around the roll to suppress the cutting position of the film, and the trimming can be performed while the tension of the sheet is kept constant. However, there is no possibility that the cut edge of the sheet such as the air cut will be disturbed and unevenness or rough edges will occur, and a good cut edge and an accurate width can be obtained. Also, since the trimming width can be changed even during operation, there is no need to stop the machine, and adjustment time can be saved. Further, since the trimming width position of the sheet can be adjusted individually on each side, the trimming width can be easily adjusted even when the entire sheet is fed with a slight deviation.

[Brief description of drawings]

FIG. 1 is a front cross-sectional view of the right half of a sheet edge trimming device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line CC of FIG.

FIG. 3 is a front view illustrating the operation of the sheet edge cutting device according to the embodiment of the present invention.

FIG. 4 is a front view showing a conventional sheet edge trimming device.

5 is a sectional view taken along line BB of FIG.

[Explanation of Codes] 30 Sheet 31, 31 'Frame 32 Roll Shaft 33 Motor 34 Fixed Comb Roll 35, 35' Moving Comb Roll 37, 37 'Fixed Blade 41, 41' Shear Cut Holder 42, 42 'Cutter 51, 51' Moving support 53 Moving nut 54,54 'Moving screw 55,55' Handle 61,61 'Guide rail 62 Bearing

Claims (1)

[Claims] 1. Arranged in the width direction of continuously fed sheets, films, etc., with both edges of the sheet or film being 1
In a sheet edge cutting device that cuts with a pair of annular blades and a disk-shaped rotary cutter that is in contact with this, and aligns the width of the sheet, film, etc. uniformly, it is installed in the width direction of the sheet or film and the rotation speed and rotation A roll shaft coupled to the output shaft of the motor whose torque is controlled, a frame that supports the roll shaft at both ends to rotate freely, and a fixed comb fixed to the roll shaft and having both ends formed in a comb tooth shape. A roll and a comb tooth of the fixed comb roll and a comb tooth that interleaves with each other, and is movable in the axial direction while the rotation direction is restricted by the roll shaft, and an annular fixed blade is provided on the side surface of the intermediate groove portion of the roll surface. It has a pair of movable comb rolls that are fixed and symmetrically placed on both sides of the fixed comb roll, and a freely rotating disc-shaped cutter, and the cutter can be brought into contact with and separated from the fixed blade of the movable shaft roll. Mechanism to move to A pair of symmetrical shear cut holders, which holds the shear cut holder, supports the movable comb roll by axially restraining the movable comb roll rotatably, and includes a guide groove in the seat width direction and a nut for movement. The seat includes a pair of symmetrical moving supports, a pair of guide rails fixed to the frame and engaged with and guiding the moving support, and a pair of moving screws and a handle symmetrically attached to the frame. Alternatively, the sheet edge trimming device is characterized in that the film is wound around a fixed comb roll and a moving comb roll and cut, and the width of the sheet or the film can be adjusted even during operation.