JPH0691596A - Slitter with heated multi-blade formed in sheet of made of molding material - Google Patents

Abstract

PURPOSE:To improve efficiency and make a cut section sharp by accomplishing cutting by means of moving a cutter holder, which holds a plural number of straight edge cuffers in alignment, from the other side to this side in relation to workpieces on a holding plate taken out sheet by sheet from a stocker, and fransporting the cut workpiece as it is by suction. CONSTITUTION:An assembled body 2 provided with a plural number of straight blade cutters 2a fitted thereto is inserted into spot faced grooves 3a on cutter spacers 3 which are held by a cutter holder 9 in alignment. Workpieces 5 stacked up on a stocker are placed on a workpiece plate 18 one by one by a vacuum suction type feeding device. Cutting is accomplished by moving the cutter holder 9 from the other side to this side in relation to the workpiece 5. Workpieces 5a finished in cutting process are sucked so as not to become loose and sent to a disposing position by a vacuum suction type discharging device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally relates to a work piece (work) formed by cutting a sheet or a plastic material into a sheet-shaped cutting plate or a tube, and a vertically elongated strip shape. Regarding a slitter that cuts a large number of strips, ring-shaped products or semi-finished products, more specifically, a predetermined number of razor-shaped straight blade cutters that are commercially available as stationery products that cut paper, etc. It is a type of slitter that cuts while pulling from the front end of the work in the mounted state,
The cutting is repeated automatically, and the heater embedded inside the holder heats the cutter and transfers the heat applied to the cutter to the work by conduction, raising the work to the optimum temperature for cutting. The present invention relates to an automatic hot-blade multi-blade slitter with improved cutting performance.

[0002]

2. Description of the Related Art Conventionally, a work material (work) in which a plastic material such as paper or polypropylene is formed into a rectangular cut plate size of about A4 to B4 size is processed into a number of vertically elongated strip-shaped products. Alternatively, as a semi-finished product, as shown in FIG. 9, a press machine in which a predetermined number of elongated slit cutters were mounted in parallel was used, and pressure was applied from above the work vertically to perform shearing. .

[0003]

When such a shearing process is used, the cut end of the product does not become a sharp, the product is bent or macreed, and the cutter wears early to reduce the sharpness. There was a problem that it was easy to do, and there was a demand for improvement.

[0004]

According to the present invention, a razor-shaped straight blade cutter, which is commercially available as a stationery article for cutting paper or the like, is used as it is, and the razor-shaped straight blade is used, for example, as a surgical knife. Applying the principle that when cutting while pulling to the front like this, the blade angle acts mechanically similarly to sharpening and the sharpness improves, a predetermined number, for example 10-4
A method was adopted in which zero straight blade cutters were installed in a cutter holder with the blade edges aligned in parallel, and a predetermined number of vertically elongated strips were simultaneously cut while pulling from the front end of the work toward you by power. As a means for improving the workability of the work, the straight blade cutter is heated to raise the temperature of the slitted part of the work in contact with the blade edge to 30 to 100 ° C by heat conduction. -The problem was solved by softening the work somewhat and improving the workability of the work for slit processing to the optimum state.

On the other hand, for automation of work, about 100 to 200 sheets of unworked work are stacked and accommodated in a container called a box-shaped stocker having an open upper portion, and the work is at the upper portion. Vacuum suction from the objects one by one, pick them up one by one, and send them to the cutting position by the straight blade cutter, pushing the work from bottom to top as the number of works stacked in the container decreases. The surface of the work in the uppermost layer was always kept at the same height so that it was adsorbed by the vacuum adsorption tube so that it could be conveniently transferred to the cutting position. At least two such stockers are arranged side by side, and one of the two stockers supplies the work to the supply device described later while the other stocker stores the work. In the standby position, when the work in one stocker disappears, the other stocker takes turns to supply the supply so that the supply is not interrupted.
Also, depending on the type of product, it is possible to supply the sheets alternately from two stockers.

A feed device for feeding the work in the stocker to the cutting position and a discharge device for discharging the product or the semi-finished product, which has been slit-cut by the straight blade cutter, to the product conveyor or the product storage area are provided at the tip of the intake pipe. The number of suction pipes is 4 to 8 in a supply device that mainly handles suction pipes with suction cups and handles unworked work, and the number of slits at one time in a discharge device that transfers cut products Then, the suction pipe is arranged at positions corresponding to the front part, the center part, and the rear end part of the work,
The problem was solved by utilizing the adsorption effect of reduced pressure. Raw wire
To fix the work at the cutting position by the straight blade cutter, a vacuum suction chamber was provided on the back side of the work to absorb the work.

[0007]

The work is adsorbed one by one from at least one of the stockers in which the work is accommodated by the suction pipe of the supply device and sent to the cutting position, and the vacuum suction chamber below the work is depressurized. -Securely fix the hook and when the fixing is completed, the feeding device returns to the stocker. When the straight blade cutter reaches a predetermined temperature, the air cylinder for driving the cutter is activated, the straight blade cutter is pulled from the front end of the work toward you, and the cutting of the predetermined number of vertical strips is completed in one operation. . When the cutting is completed, the straight blade cutter returns to the cutting start position in the front, and the discharging device is automatically driven to move to the predetermined position of the product while keeping the state before cutting even after the cutting. The tip of the adsorption tube descends until it comes into contact with the surface of the product, and the adsorption tube placed at the position corresponding to the front, middle and rear of each slit-cut product strip causes each product strip to move. It is not separated into pieces and is adsorbed and transferred to the product conveyor while maintaining the state before slitting.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view of a heat blade multi-blade slitter of sheet-like or molding material according to the present invention, FIG. 2 is a plan view of arrangement of each component, and further a perspective view of a cutter carriage 1a. 3, the assembly 2 having a plurality of commercially available straight blade cutters 2a attached thereto is, as shown in FIG. 4, almost the latter half except for the tip portion 2b for slit cutting. FIG. 3 shows the insertion holes 2c formed in the same positions of the cutters 2, each of which is accommodated by being fitted in a counterbore groove 3a having a depth slightly smaller than the thickness of the cutter 2 of the rectangular cutter spacer 3. Through holes 3 formed in each of the cutter spacers 3
By a long bolt 4 penetrating with b, the work pieces 5 are arranged linearly with the cutting width of the work 5 kept therebetween, and are cylindrical holder blocks 6 outside the cutter spacers 3 on both the left and right sides.
A nut (not shown) that engages the bolt 4 together with (FIG. 3)
It is firmly tightened by. Both ends of the long bolt 4 further extend to form a rod-shaped plate 7 and a plate 7.
The cutter holder 9 having the L-shaped metal fittings 8 fixed symmetrically at both ends of the is inserted into the horizontal cut 8a in the L-shaped metal fitting 8 and fixed by the nut 10. The thermostat 12 adjusts the temperature to 30 to 100 ° C. according to the material.

The cutter holder 9 further includes a sliding plate 13 having a substantially rectangular plate shape, and two air cylinders 14 provided at both ends in the transverse direction thereof. The sliding plate 13 has sliding members at both ends. A guide rail 15 that has a moving member 13a and is installed on both left and right outer sides of the work 5 in parallel to the cutting direction of the work 5.
L-shaped metal fittings 8 are fixed to the piston rods 14a of the two air cylinders 14 vertically attached to the insides of both the sliding parts 13a by engaging with the plurality of cutters 2. It is possible to move up and down as a unit. An L-shaped bracket 13b is engaged with the central portion of the upper surface of the sliding plate 13 to reciprocate the cutter holder 9 in the work cutting direction by the air cylinder 17. Further, referring to FIG. 5, on the upper surface of the table 16 to which the U-shaped bracket 16a and the guide rail 15 are attached, in the work cutting direction at the same pitch as that of the cutter 2 with reference to FIG. A shallow straight groove 1 that is carved and receives the cutting edge 2b of the cutter 2.
8a, a plurality of small holes 18b for sucking the work, and a box-shaped work holding table 18 having a vacuum suction chamber 18c are attached.

Next, a front view and a plan view of the supply device 21 and the discharge device 31 are shown in FIG. 6 and FIG. 7, respectively. The supply device 21 includes an air cylinder 23 near the center of the horizontal plate portion 22a of the L-shaped bracket 22, and an air cylinder 23. One guide assembly 24 is vertically installed near each of the four corners, and the piston rod 23
A rectangular plate-shaped plate 26 is attached to the lower ends of the a and each guide bar 24a. On the other hand, the discharging device 31 has the same structure as the supplying device 21, except that (i) the number of the vacuum suction tubes 27 is large and the elongated product strips 5a that have been cut are
(See FIG. 5) The front part (upper part in FIG. 5), the middle part, and the rear part are arranged, and the adjacent vacuum suction tubes 27 are arranged in a staggered manner with respect to each other. Therefore, the vacuum conduit 27a corresponding to the vacuum conduit 25a of the supply device 21 and 26 'corresponding to the plate 26 are omitted.
As shown in FIG. 1, a thin rectangular vacuum box 32 and a large number of distribution pipes 32a are connected to the vacuum adsorption pipe 27 at a portion corresponding to the middle of the above. The discharging device 31 and the supplying device 21 are integrally connected by a connecting rod 33, and are reciprocated along a transverse arm 41, which will be described in detail later, in a transverse direction perpendicular to the cutting direction of the work.

Referring to FIG. 1, FIG. 6, FIG. 7 and FIG. 8 showing the AA cross section of FIG. 6, the arm 41 is a beam having a box-shaped cross section, and both ends are supported by columns 42. , Two rails 43 are fixed to one side surface (front side in the figure), and the rollers 22b attached to the L-shaped bracket 22 of the supply device 21 roll along the rails 43. A linear motion drive device (commercially available, lotless cylinder with guide) 44 mounted on the upper surface of the arm 41 and having an air cylinder built therein, feeds the supply device 21 via a connecting bracket 45 to the rail 43.
The discharging device 31 has a roller that engages not only with the side surface of the rail 43 but also with the upper surface and the lower surface (not shown) of the rail 43. A reciprocating motion is carried out along the rail 43 at right angles to the cutting direction.

Two stockers 51, 51a are shown in FIG. 8, and both have substantially the same structure. Therefore, the stocker 51 will be described as a representative example of a box 52 having a size capable of accommodating a work. The bottom plate 53 is vertically movable by being guided by guide bars 54a which are also attached to the four corners of the lower surface by vertical shafts 54 attached to the lower surface of the center. It is driven up and down via a chain 56, a universal joint shaft 57, and an operation converter (commercially available small jacker) 58. The stocker 51a operates in the same manner as the operation converter 58.
It is driven up and down via a. Stock car 51,51
The frame base 59 to which a driving device including a and the motor 55 is attached is a frame 6 having a channel steel structure through a roller (not shown) by an air cylinder 60 as shown in FIG.
It reciprocates in the direction perpendicular to the arm 41, that is, in the cutting direction. The operation converters 58, 58
a stocker 51 or 51 by combining an electromagnetic clutch with a
It is also possible to move up and down only one side of a.

The operation of the hot-blade multi-blade slitter having the above-described structure will be described. Referring to FIGS. 1 and 3, about 100 to 200 sheets of sheet-shaped or molding material unworked work 5 are designated as a stocker 51. As shown in FIG. 8, the stocker 51 is placed in the stacker 51a, and the stocker 51 is positioned directly below the supply device 21 and the start button of the automatic control device 71 (FIGS. 1 and 2) is pressed. 21 air cylinder 23 is activated
26, the vacuum suction pipe 25 stops at the position where the tip of the vacuum suction pipe 25 contacts the work 5, and the three-way valve (not shown) between the vacuum conduit 25a and the vacuum tank (not shown) opens. Through the vacuum path, one of the uppermost work 5 is adsorbed, the plate 26 moves up and returns to the position shown in FIG.
By the operation of the linear motion driving device 43, the work is stopped just above the work holding table 18 (see FIG. 1) as shown in FIG.
The door 26 descends and stops at a position where the work 5 contacts the holding table 18, the vacuum passage of the three-way valve is closed and the vent passage is opened, and the work 5 is separated from the vacuum suction pipe 25. Shortly before that, the vacuum suction chamber 18c (FIG. 5) was evacuated by another three-way valve (not shown) to the vacuum tank, and the work 5
Are suction-fixed to a predetermined position on the upper surface of the holding plate 18.

Then, the plate 26 is raised and stopped at the upper limit, and then the feeding device 21 is returned to the initial position by the linear motion driving device 43. When the plate 26 stops at the upper limit, the cutter holder 9 (see FIG. 3) is lowered by the operation of the air cylinder 14, and the tip 2b of the cutter 2a comes into contact with the bottom of the groove 18a of the work holding base 18. Then, the air cylinder 17 is actuated to move from the front end (closer to the air cylinder 17) to the front, and the thermal straight blade cutter 2a mounted in parallel.
The product piece 5a is obtained by cutting the garage 5. Thereupon, the cutter holder 9 is lifted by the operation of the air cylinder 14, and the cutter holder 9 is moved integrally with the supply device 21 in accordance with the signal indicating that the cutter holder 9 has completely returned to the position immediately above the work holding base 18 as shown in FIG. In the discharging device 31, which is the same as the supplying device 21, the air cylinder 23 'is operated and the vacuum suction pipe 27 attached to the plate 26' sucks the product strip 5a. Feeding device 2 that ascends in the state of adsorbing the product strip 5a, stops at the ascending end, and adsorbs the next unworked work
1 along the arm 41 from the position shown in FIG.
, The air cylinder 23 'is activated, the plate 26' is lowered, and the cut product strip 5a adsorbed by the vacuum adsorption tube 27 is placed on the conveyor 72 or in the product storage area. It is placed in a sheet kept in the sheet state before the slit without being separated.

The slitting operation as described above is continuously and automatically performed by the automatic control device. In FIG. 8, one of the works 5 stacked on the first stocker 51 is a supply device 21.
When it is adsorbed and removed by the motor, the motor 55 is rotated by the operation of the proximity switch (not shown) to raise the bottom portion 53 of the stocker 51 so that the uppermost layer of the work is always held at a fixed position. When the work disappears, the air cylinder 60 (see FIG. 1) is activated to move the second stocker 51a to the position of the stocker 51 in FIG. 8 so that the feeding operation is performed without interruption. , In the meantime, the first stocker-5
When 1 is filled with a work and the second stocker 51a becomes empty, the air cylinder 60 operates again to the original position, that is, the position shown in FIG. 8, and the continuous work is automatically continued.

[0016]

EFFECTS OF THE INVENTION A commercially available razor-shaped straight blade cutter can be used as it is, and the slit workability is improved by heating the cutter to a temperature according to the processing material, and one stocker can be used as a worker.
Since the stocker is automatically replaced with the other stocker accommodated in the work even if the sack disappears, the fully-automatic work can be continued efficiently without interruption, and the cut product strips can be transferred to the seal before the slit. Since it is placed on the product conveyor or the product storage area while maintaining the automatic state, the subsequent work such as inserting a package is performed as a continuous automatic work.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a sheet-shaped or molding material hot-blade multi-blade slitter of the present invention.

FIG. 2 is a plan layout view of various elements constituting the sheet-shaped or molding material hot-blade multi-blade slitter of the present invention.

3 is a partially enlarged perspective view of a cutter carriage of the hot blade multi-blade slitter shown in FIG.

FIG. 4 is an enlarged perspective view of an assembly of a cutter and a cutter spacer.

5 is a partially enlarged plan view of the work holding table shown in FIG.

FIG. 6 is a front elevation view of the supply device, the discharge device, and the arm shown in FIG.

FIG. 7 is a plan view of FIG.

8 is a sectional view taken along line AA of FIG. 6 including a stocker.

FIG. 9 is a partial perspective view of a shearing type slitter according to the prior art.

[Explanation of symbols]

 1 Heat blade Multi-blade slitter cutter Reciprocating table 1A Cutter reciprocating table 2 Straight blade cutter assembly 2a Straight blade cutter 2b Blade tip 2c Insertion hole 3 Cutter spacer 3a Counterbore groove 3b Cutter spacer insertion hole 3c Cutter spacer heating tool -Ter insertion hole 5 Unworked work 5a Machined product strip 9 Cutter holder 11 Electric heater 15 Guide rail 17 Air cylinder (drive device) 18 Work holder 18a Work guide Groove 21 Supply device 25,27 Vacuum adsorption pipe 31 Discharge device 41 Arm 51,51a Stocker 72 Conveyor

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location B65H 29/24 B 35/02 9037-3F

Claims (4)

[Claims] 1. A rectangular sheet-shaped sheet or a cylindrically shaped intermediate material is cut longitudinally from a long sheet of paper or plastic as a starting material to obtain a plurality of strip-shaped cut pieces. An automatic multi-blade slitter, which is a straight-blade cutter assembly in which a plurality of blades of a razor-shaped straight-blade cutter are aligned in a substantially same plane with a predetermined interval. A cutter holder that surely holds the cutting blade row and a pair of guide rails that are arranged parallel to each other outside both side ends of the cutter holder that are parallel to the cutting direction and that reciprocate the cutter holder in the cutting direction. A cutting direction in which the cutter holder is pulled forward from the front end of the work along the guide rail, and upward for cutting the next work after cutting one work. How to return to pulling and then returning to the cutting start position A driving device for driving in the direction, provided at a predetermined position close to the cutter of the cutter holder, for increasing the temperature of a portion of each work in contact with the cutting edge of each straight blade cutter to a temperature suitable for slit cutting. A heating element for heating the straight blade cutter; and a cutter carriage comprising: a plurality of straight blade cutters held by the cutter holder between the pair of guide rails and arranged below a cutting edge of the cutter blade. A work holding table for surely holding the work during slit cutting; a supply device for feeding the unworked work piece by piece to the work holding table; on the work holding table The slit and cut product is
A sheet-shaped or molding material hot-blade multi-blade slitter, which comprises a discharge device for transferring from a holding table to a product storage. 2. The work is a sheet-like material, and the supply device has a vacuum suction tube of the number necessary to adsorb the unworked work and transfer it to the work holding table. However, the discharging device is provided at a position necessary to transfer the cut product to the product storage area while preventing the cut product from being separated into individual pieces and maintaining the work shape before cutting. It has a predetermined number of vacuum suction pipes, and these supply device and discharge device are paired and integrally connected, and extend upward in the direction perpendicular to the guide rails of the cutter carriage so as to extend upward. Mounted on an arm which is movable parallel to the guide rail, along which the guide rail is attached.
2. The sheet-shaped or molding material hot blade multi-blade slitter according to claim 1, which is selectively movable in a direction perpendicular to the guide rail and in a direction parallel to the guide rail. 3. The hot-blade multi-blade slitter accommodates a plurality of sheets of sheet-like material stacked and accommodated therein, and is horizontally movable to a position where the sheet can be supplied to the supply device. , At least two stockers that raise the work as the number of stored works decreases; automatic supply of material, slit cutting, and discharge of cut strips according to predetermined programming While repeating the operation in which the feeder sequentially adsorbs the sheet-like material from one stocker and feeds it to the work holding table, The sheet according to claim 2, wherein the sheet-like material is accommodated in the stocker so that the material can be alternately supplied, and the operation from the material supply to the discharge of the cut strip can be automatically repeated. Multi-blade slitter with hot blades for flat or molded materials. 4. A cutter assembly for use in a hot blade multi-blade slitter of a sheet or molding material according to claim 1, wherein a plurality of insert holes are formed at the same positions. Commercially available straight blade cutters and adjacent two of the plurality of straight blade cutters
Assembled with a counterbore groove, which is disposed between the individual straight blade cutters, has a depth slightly shallower than the thickness of the straight blade cutters, and accommodates substantially the latter half of the straight blade cutters. The insertion holes arranged in line with all of the insertion holes of the straight blade cutter in a state of being placed at a position and the insertion hole 2a are opened parallel to the insertion holes by a predetermined distance and the cutter 2 is opened at a predetermined temperature. In the state where each of the cutter spacer having the insertion hole 3c for inserting an electric heater for heating to the inside and the straight blade cutter is engaged with the counterbore groove of the cutter spacer. , When the work pieces are alternately arranged with a predetermined number of cutting widths at right angles to the cutting direction, the straight blade cutters 2 and the cutter spacers 3 are placed at corresponding positions. Through a pair of through holes that are aligned and opened, The cutter assembly according to claim 1, wherein the bolt 4 having a length projecting to the side, and the cutter 2 and the cutter spacer are firmly tightened by a nut engaging with the bolt 4.