JP3153140B2 - Sheet-like material supply device to processing section - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet material supply apparatus which always applies a constant tension to a sheet material to be supplied to a processing section in an operation of punching or cutting a sheet material wound into a roll.

[0002]

2. Description of the Related Art When a sheet-shaped material wound in a roll is intermittently supplied to a processing portion, the sheet-like material is drawn out from a roll-shaped material by a feed roller F and fed to the processing portion via a dancer roller. Will be supplied.

In supplying the sheet material, it is necessary to always supply the sheet material with a constant tension to the processing section. However, as described above, the sheet material is supplied via the dancer roller. Even if the tension is adjusted by adjusting the tension, the outer diameter of the raw sheet material wound into a roll gradually decreases as the supply proceeds, and the dancer roller moves upward as the outer diameter decreases. It moves, the tension fluctuates, and the tension cannot be kept constant.
Therefore, conventionally, a brake device is provided at the shaft end to apply braking to a shaft that is rotated by the brake device.

[0004]

In the conventional apparatus described above, it is necessary to provide a brake device outside the bearing that supports the shaft, and the shaft must be very long. There were problems. SUMMARY OF THE INVENTION It is an object of the present invention to provide a sheet-like material supply apparatus that solves the above-mentioned problems, reduces the length of the shaft, and always applies a substantially constant tension to the supply sheet.

[0005]

According to the present invention, there is provided an apparatus for feeding a sheet-like material to a processing section according to the present invention, in order to achieve the above object, a winding section for winding a sheet-like material processed in the processing section. The sheet-like material is supplied to the processing section through a dancer roller that is capable of moving up and down along the machine frame from the raw material, and is supplied to the dancer roller. An axially movable paper tube holder that holds the paper tube can be inserted into and removed from the shaft,
Means for dividing the bearing that supports the shaft into two parts, an upper bearing body and a lower bearing body, and applying a biasing force to the shaft from above the upper bearing body when the shaft is held by the divided bearing body. It is characterized in that the rotation of the shaft can be controlled by being provided.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a processing device for continuously punching or cutting a sheet-like material wound in a roll shape. These devices are well-known devices in the related art, and details thereof are not particularly described. A is a raw material of the sheet material 1 wound in a roll shape, and is supplied through a dancer roller C to a processing portion B for punching or cutting the sheet material 1 wound on the raw material A, and supplied. The processed sheet material 1 is processed in the processing section B, and the processed sheet material is wound up by a winding device D.

The above-mentioned sheet material 1 is unwound from the raw material A by the feed roller F of the processing section B. The sheet material 1 is always supplied to the processing section B with a constant tension. Since the supply of the sheet material 1 from the raw material A is performed through the dancer rollers C, the tension can be adjusted, but the supply of the raw material A proceeds. As the outer diameter of the rolled raw material A gradually decreases, the tension fluctuates in spite of the presence of the dancer roller C, making it difficult to maintain a substantially constant tension.

Therefore, in the present embodiment, the raw material A shown in FIG.
A pair of paper tube holders 3 and 4 that hold a paper tube 2
Brake means E for braking the rotation of the shaft 5 which is rotated integrally with the shaft 5 is provided. Therefore, these are transferred to paper core 2 of material A.
The brake means described above together with the holding means will be described with reference to the drawings. In FIGS. 2 to 5, a bearing for rotatably supporting the shaft 5 on a pair of pedestals 6 and 6 facing each other at a predetermined interval.
8, 8 are provided.

The bearings 8 and 8 are, as shown in FIG.
5 is divided into an upper bearing main body 11 provided with a bush 10 in a sliding portion and a lower bearing main body 12 fixed to the gantry 6, 6;
The upper bearing body 11 can be freely opened and closed around a pin 14 at a mounting portion 13 integrally provided on one side of the lower bearing body 12, and a pin 15 is provided on the other side of the lower bearing body 12. A handle shaft 16 which is rotatable is provided, and a screw 17 is engraved on an upper end of the handle shaft 16, and a tightening knob 18 is screwed to the screw 17 so as to be vertically movable. Further, reference numeral 20 denotes a pin for preventing a washer from being dropped through a required portion of the handle shaft 16, reference numeral 21 denotes a spring receiving washer provided below the tightening knob 18, and reference numeral 22 denotes a loose fit on the handle shaft 16. A lower washer that is prevented from falling by the fall prevention pin 20;
A spring 23 is interposed between the both washers 21 and 22.

The above-described bearing 8 has a structure in which the upper bearing body 11 is
Lower bearing body 12 that rotates around 14 and supports shaft 5
When the handle shaft 16 is rotated and the washer 22 loosely fitted to the handle shaft 16 is placed on the upper surface of the upper bearing body 11, the upper bearing body 11 is provided with a spring interposed between the washers 21 and 22. The upper bearing main body 11 is pressed by the urging force of 23, and a required pressure can be applied to the shaft 5. If the tightening knob 18 screwed to the upper part of the handle shaft 16 is moved up or down along the screw 17, the urging force of the spring 23 can be changed, and thus the pressing force on the shaft 5 can be reduced. It can be changed.

3 is a set screw on one end of the shaft 5 described above.
The paper tube holder fixed at 26,
The side of the raw material 3 holding the paper tube 2 is inclined inward . Reference numeral 4 denotes a paper tube holder for holding the original paper core 2 in a pair with the paper core holder 3 fixed to one end of the shaft 5 described above. The side for holding the tube 2 is inclined inward and is cut out at the width of the shaft diameter to form a notch 29 (see FIG. 5). Therefore, the paper tube holder 4 can be inserted into and removed from the shaft 5 from the vertical or horizontal direction. 27 before
Shaft end opposite to the holding part
Is a stopper that is loosely fitted so that it can slide in the axial direction at the part .
Reference numeral 28 denotes the outside of the paper tube holder 4, that is ,
Once in contact with the rear side as viewed from the holding portion is the nut that is screwed to be able to advance and retreat axially inward of the stopper 27 in together, the paper that has been inserted into the shaft at these stoppers 27 and nut 28 After adjusting the tube holder 4 to the required position, it is fixed to the shaft 5 with screws or the like. Reference numeral 30 denotes a paper tube guide disposed inside the paper tube holder 4, that is, on the holding side of the raw paper core 2.

The outer diameters of the nut 28 and the stopper 27 for adjusting the holding position of the paper tube 2 by moving the paper tube guide 30 and the paper tube holder 4 in the axial direction are smaller than the inner diameter of the paper tube 2. ing. Therefore, the paper tube holder 4 is
The paper tube 2 can be easily pulled out for further extraction.

FIG. 1 shows a dancer roller C used in this embodiment.
6, a roller shaft 37 is mounted on a roller shaft 37 which is vertically mounted on a roller fixture 36 suspended by a spring 35 so as to be able to move up and down on a vertical frame 34 fixed to a horizontal machine frame 33. 38
Are freely rotatably fitted, and the tension of the sheet stretched over the roller 38 is adjusted by moving the roller 38 up and down.

Since the embodiment of the present invention is configured as described above, in order to mount the raw material A in which the sheet-like material 1 is wound into a roll between the paper tube holders 3 and 4, the shaft 5 The handle shafts 16 of the bearings 8 provided at both ends are rotated, then the upper bearing main body 11 is opened around the pin 14, and the entire shaft 5 is lifted upward by a lift or the like. Paper tube holder 4
Is pulled out from the shaft 5, the guide 30 is fixed at a predetermined position on the shaft, and the paper tube 2 at the center of the web A is inserted from the stopper 27 side. At this time, since the outer diameters of the stopper 27, the nut 28 and the paper tube guide 30 mounted on the shaft 5 are formed smaller than the inner diameter of the paper tube 2, the raw material A is easily inserted into the shaft 5.

When the material A is inserted, the paper core 2 of the material A is inserted.
The paper tube guide 30 is positioned so that the other end of the paper tube 2 is received by the paper tube guide 30 when one end of the paper tube 2 is received by the paper tube holder 3. It does not come into contact with 5 and become oblique. Axis in this state
A paper tube holder 4 that can be inserted into and removed from
The paper tube holder 4 is slid in the axial direction with a nut 28 to
2 is held together with the fixed paper tube holder 3 described above, the nut 28 is fixed to the shaft at the position where the paper tube holder 4 holds the paper tube 2, and the stopper 27 is further fixed to the nut 28.
And fixed to the shaft 5 at that position.

After the above, the shaft 5 holding the raw material A is mounted on the lower bearing main body 12 of the bearings 8 and 8 by a lift or the like, and the upper bearing main body 11 is put on the lower bearing main body 12 so as to cover the shaft 5. , The handle shaft 16 is rotated, the washer 22 is placed on the upper surface of the upper bearing body 11, and the tightening knob 18 screwed to the handle shaft 16 is rotated to interpose the handle shaft 16. The biasing force of the mounted spring 23 is adjusted, and the biasing force
Braking force can be adjusted.

When the sheet-like material 1 is finished, the paper tube holder 4 is pulled out from the shaft 5, the split bearing is opened, the shaft 5 is removed from the bearing, and the paper tube 2 is drawn out.
Then, the web A is mounted on the shaft 5 and the paper tube holders 3 and 4
It is as described above to hold in the middle.

As described above, the raw material A is mounted on the shaft 5 and the sheet material 1 is supplied to the processing section B via the dancer roller C. The supply is supplied by the feed roller F of the processing section B. although, since the supply via the Dansaro La C during supply, when the tension of the sheet-like material 1 supplied is substantially constant, the processing becomes smaller diameter progresses raw a, da down The tension of the sheet-like material 1 changes even though it passes through the roller C.

When the tension changes in this manner, the processing portion B
It will hinder the machining in
8, the urging force of the spring 23 against the washer 22 abutting on the upper surface of the upper bearing body 11 is increased by rotating the closing knob 18, and as a result, a braking force is applied to the shaft 5 to rotate the shaft 5. It slows down and gives a moderate braking to the force to wind up the material A, so that the tension of the sheet material 1 is increased,
Try to obtain a substantially constant tension.

In this embodiment, the means for applying a braking force to the shaft to keep the tension of the sheet-like material 1 supplied to the processing portion B substantially constant is also used as a bearing. In order to apply a biasing force from the upper surface of the main body, the bearing is split into two parts, and the split structure is also applied when replacing the raw material.The upper bearing main body of the split bearing is opened, the shaft 5 is removed from the bearing, One of the paper cores 4 of the paper core holders 3 and 4 holding the paper core 2 of the material A is pulled out from the shaft 5 and the nut 28, the stopper 27 and the nut 27 attached to the paper core holder 4 as described above. Paper tube guide
The fact that 30 is smaller than the inner diameter of the paper tube 2 can contribute to the replacement of the raw material A.

[0021]

According to the apparatus for supplying a sheet-like material to the processing section according to the present invention, the supply of the sheet-like material to the processing section is performed via a dancer roller which can be moved up and down along the machine frame from the raw material. An axially movable paper tube holder for holding a raw paper tube of the sheet-shaped material wound around the dancer roller, which can be inserted into and removed from the shaft; Since the bearing body and the lower bearing body are divided into two parts, and a means for applying a biasing force for braking the shaft from above the upper bearing body when the shaft is supported by the divided upper and lower bearing bodies is provided. In a normal state, the sheet material supplied to the processing section can be supplied to the processing section with a substantially constant tension by a dancer roller.

When the diameter of the raw material becomes smaller as the processing of the sheet material proceeds, the tension of the supplied sheet material may change. In such a case, the upper bearing main body of the bearing is used. The urging force against the lower washer of the urging force adjustment spring that is in contact with the upper surface of the roller can be adjusted by adjusting the braking to the shaft by lowering the tightening knob, and giving an appropriate amount of braking to the force for winding the roll-shaped material. The tension of the sheet material can be made variable, and the tension can be made substantially constant. Furthermore, in the case of a laminated material or the like in which different materials are bonded together, it is possible to supply the material with any surface facing upward.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a material flow of a sheet-shaped material punching device.

[Figure 2] Front view of holding section of raw material

[Fig. 3] Side view of Fig. 2

[Fig. 4] Enlarged explanatory view of the bearing part

FIG. 5 is an enlarged explanatory view of a paper tube holder.

[Fig. 6] Illustration of dancer rollers

[Explanation of symbols]

A Material B Processing part C
Dancer roller D Winding device E Braking section 1 Sheet material 2 Paper core 3, 4
Paper tube holder 5 shaft 8 bearing 11
Upper bearing body 12 Lower bearing body 16 Handle shaft 18
Tightening knob 21, 22 Washer 23 Spring 27
Stopper 28 Nut 30 Paper core guide

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B26D 7/06 B65H 23/18

Claims (2)

(57) [Claims] 1. A processing section and a winding device for winding a sheet-like material processed by the processing section, wherein the supply of the sheet material to the processing section can be lifted and lowered along a machine frame from a raw material. The paper core of the sheet-shaped material supplied through the dancer roller and supplied to the dancer roller was fixed to the shaft end.
The paper tube holder is axially movable and can be inserted
While being held by a detachable paper tube holder, the bearing supporting the shaft is divided into two parts, an upper bearing main body and a lower bearing main body. A sheet material supply apparatus for a processing unit, wherein a means for applying a biasing force to a shaft is provided from an upper portion of a bearing body so that rotation of the shaft can be controlled. 2. An axially movable and insertable / removable shaft.
Installed on the paper core holding side of the material roll of the enabled paper core holder
Paper core guide and the outside back of the paper core holder.
A nut and a stopper that are in contact with each other and fix the paper tube holder at a required position on the shaft , and the outer diameters of the paper tube guide, the nut, and the stopper are made smaller than the inner diameter of the raw paper tube. 2. The sheet-like material supply device according to claim 1, wherein the diameter of the sheet material is also small.