JPH0698974B2 - Band cutting device for multi-strand coil - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optimum device for cutting a strip coil when the strip coil is wound in a plurality of strips.

[0002]

2. Description of the Related Art Conventionally, as a device for cutting a band of a strip coil, an X-shaped device having a claw portion at the upper end position of a bouncing leg body in which a head portion on the upper end side of the strip coil is raised. A device that sandwiches the band from the left and right with a sandwiching plate (see Japanese Patent Publication No. 61-49176).
Or, a device for moving the member attached with the left and right claws of the cutting head that contacts the strip coil from the left and right by the lead of the screw shaft and scooping up the band to cut it (Japanese Patent Publication No. 58-44537). Gazette) or a band cutter for coils that processes multi-strand banding (actual open flat 2
-83207) and the like are known.

[0003]

In the former two cases described in the prior art, in order to cut one band, the claws are moved from the left and right around the band to search for the band, and the left and right sides are searched. Because it is sandwiched and cut,
As a cutting device when only one band is wound around the strip coil, each has excellent processing capacity, but when it is wound by a plurality of bands, it is possible to perform the cutting process. There was a problem that could not be done.
For that purpose, a band cutter for multi-strand banding coils has also been developed. This is a drive device for moving the band detection claw for searching the band position in the axial direction of the coil, and a cutting tool for cutting. Was provided with two driving devices separately from the driving device for moving the coil in the coil axis direction. Therefore, the mechanism is complicated and the cost is high. There is also a problem with blades, for example, when scooping a band, as a reaction force of the cutting, a resistance pressing force acts on the back side of the cutting edge of the scooping blade, that is, the surface side, and the coil surface is affected. I had a scratch on the blade. As a result, if the coiled plate is thin, it may not only stop at the front plate but also scratch the lower plate surface, and the scratched plate loses its value as a product. It also had problems. The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide one strip, one strip, and one strip next to each other even if a plurality of bands are wound around a strip coil. An object of the present invention is to provide a band cutting device capable of biting the bands sequentially and efficiently and cutting the iron plate without scratching it.

[0004]

In order to achieve the above object, a band cutting device according to the present invention is a feed device provided in a machine frame attached to a raising table in a lateral direction parallel to the axial direction of the strip coil. A screw and a moving member screwed to the feed screw to move by rotation of the feed screw, and a wedge-shaped bite-cutting claw provided with a protruding cutting force assisting pin attached to the tip (strip coil side); The left and right side surfaces are loosely fitted to the feed screw and are pushed into contact with the outer side surface of the moving member, and the tip has the bite cutting claw. A fixed cutting blade having a concave biting claw and a guide rail on which the cutting force assisting pin provided on the bite cutting claw is transferred is provided to face the tip end, and on the back surface (on the side opposite to the strip coil). The holding frame with rack teeth attached to the rear and the rear of the holding frame. Location in the, the cylinder support frame fitted with a cylinder for vertically moving the fixed rack teeth for fixing the rack teeth meshing clamping frame provided on the rear side of the machine frame.

[0005]

By the rotation of the feed screw, the moving member moves forward in the band search direction (rightward in FIG. 1) in search of the band, and in this case, if the fixed rack teeth are moved backward and separated from the rack teeth, the holding frame also moves. It is pushed by the side surface of the moving member and moves together in the search direction, and after the bite-cutting claw first crosses the band α, the bite-claw facing the bite-cutting claw attached to the holding frame then moves to the band α. When the contact (not shown) is detected by the sensor, the cylinder is urged to move the fixed rack teeth forward to engage the rack teeth, fix the holding frame and the bite claw, and then set the feed screw as described above. When is reversed, the moving member moves in the cutting direction (left in FIG. 1), and the bite cutting claw bites the opposing biting claw to scoop and cut the band α.
In that case, the bite cutting claw is pulled to the strip coil side by the reaction force when the band is scooped up, but it is transferred to the guide rail of the fixed cutting blade where the cutting force support pin of the bite cutting claw is strongly fixed. Therefore, the strip coil is not affected by the pulling force of the band, and therefore the strip coil is not scratched.

Further, the movement amount of the bite cutting claw for scooping and cutting the band α, that is, the rotation amount of the feed screw is controlled by the encoder attached to the feed screw, and after the first band is cut, the fixed rack teeth are cut. After releasing the engagement between the rack teeth and
The feed screw is rotated to repeat the above operation to cut a plurality of adjacent bands, and after the cutting operation is detected and controlled by the encoder, the feed screw is rotated to move the moving member in the cutting direction. After cutting the last band, contrary to the above, the holding frame is returned to the starting position of the cutting operation on the left end side in FIG.

[0007]

EXAMPLES Examples will be described with reference to the drawings. 1 to 14, the machine frame 1 includes a raising table 3 provided at the upper end of a raising leg body 2 whose upper end side is raised toward the strip coil S, in a direction perpendicular to the diameter direction of the strip coil S (hereinafter The direction of movement of the claw) is defined as a longitudinal direction, and the cross section is formed into a substantially inverted U-shape, and the claw is mounted rearward (in the direction away from the strip coil, upward in FIG. 1). The feed screws 4 are left and right side surfaces in the longitudinal direction of the machine frame 1,
Bearing at the positions of 5 and 5, the rotary drive unit 6 is provided on one end side,
A rotation control unit 7 formed of, for example, an encoder is provided on the other end side.

The moving member 8 is internally fixed with the nut 9 which is screwed into the feed screw 4. The front end (strip coil side, lower end side in FIG. 1) has a wedge shape and a cutting force support pin 10 on the side surface. The protruding bite cutting claw 11 is axially attached to the shaft 12 in parallel with the feed screw 4 and the tip side inward. Further, more specifically, the nut 9 has, for example, an outer shape formed in a square cross section, and its rotation is suppressed by the rotation prevention plates 13, 13 which are laterally attached to both sides of the nut 9 and laterally outward. , Is moved by the rotation of the feed screw 4. The holding frame 14 is formed in a substantially U-shaped cross section, and the left and right side surfaces 1 of the holding frame 14 are formed.
5'and 15 are loosely inserted into the feed screw 4 in the moving direction of the pawl, and the side surface 16 of the moving member 8 on the band searching side is inserted.
Is provided in an adjacent position where the holding frame 14 contacts the inner side 17 of the side 15 on the band search side and can be pushed.

The bite claw 18 is provided inward at the front end of the side surface 15 'of the holding frame 14 on the cutting direction side (left side in FIG. 1) so as to face the bite cutting claw 11. The fixed blade 19 is provided at the front end of the side surface 15 'on the cutting direction side so as to face the bite cutting claw 11 and inwardly in the moving direction of the claw, and the guide rail portion 2 is provided.
0 indicates that the cutting force support pin 10 has the bite cutting claw 11 from the inner tip of the fixed blade 19 toward the mounting base of the side surface 15 '.
It will be recessed along the advancing line that will be entered by advancing. The rack teeth 21 are fixed to the back surface 22 of the holding frame 14 in a sawtooth shape in the moving direction of the claws with the teeth facing backward (away from the strip coil). The fixed rack teeth 23 are the rack teeth 2 described above.
The teeth are provided forward at the rear position where they mesh with 1.
More specifically, the fixed rack teeth 23 are provided on the rear surface 2 of the machine frame 1.
4 is provided so as to move up and down by a cylinder 26 attached to a cylinder support frame 25 fixed laterally to the claw 4 and has a length such that it can be engaged at any place within the moving range of the rack teeth 21. It is provided in a sawtooth shape in the moving direction of.

[0010]

Since the present invention is configured as described above, it has the following effects. When the bite cutting claw moves by searching the band from the starting position by the rotation of the feed screw, the bite claw can also move together through the holding frame while maintaining the optimum distance for holding the band, resulting in high efficiency without unnecessary movement. Work can be expected, and when the bite cutting claw can move over the band when moving in the band search direction, it can move to neighboring bands one after another, and multiple bands can be efficiently moved. It is possible to treat the bite-cutting claw and remove the band pulling back resistance force of the band by the cutting force assisting pin to eliminate scratches on the surface of the strip coil.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view of a main part of a band cutting device.

FIG. 2 is a vertical cross-sectional view of the main part taken along the line AA of FIG.

FIG. 3 is a vertical cross-sectional view of a main part on the line BB of FIG.

FIG. 4 is a front view showing a state in which rack teeth and claws of the band cutting device are engaged with each other.

FIG. 5 is a schematic front view showing the entire band cutting device.

FIG. 6 is a schematic plan view showing the starting point position of the band cutting device before the start of movement of the blade.

FIG. 7 is a schematic plan view showing that the bite-cutting claw is passing through the surface of the band as the blade portion moves.

FIG. 8 is a schematic view of a plan view in which the rack teeth are engaged with each other, and the bite-cutting claw is directed toward the bite-claw side by reversing the feed screw.

FIG. 9 is a partially enlarged schematic view of a plan view in which the rack teeth are engaged with each other, and the bite-cutting claw is directed toward the bite-claw side by the reverse rotation of the feed screw.

FIG. 10 is a partially enlarged schematic view of the plan view showing a state in which the feed screw continues to be reversed, the bite cutting claw scoops the band, and the cutting force support pin rides on the guide rail.

FIG. 11 is a partially enlarged schematic view of a plan view showing a bite-cutting claw scooping up a band and advancing it to the point of just before tearing.

FIG. 12 is a schematic perspective view showing a state in which the bite claw holds the band and the bite cutting claw approaches the fixed blade.

FIG. 13 is a schematic perspective view showing a state in which the bite cutting claw picks up the band and the cutting force support pin is transferred to the guide rail.

FIG. 14 is a schematic side view showing the entire band cutting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Machine frame 2 Lifting leg 3 Lifting table 4 Feed screw 5 Side surface 6 Rotation drive unit 7 Rotation control unit 8 Moving member 9 Nut 10 Cutting force support pin 11 Bite cutting claw 12 Shaft 13 Rotation restraint plate 14 Holding frame 15 , 15 'Side surface 16 Side surface 17 Inner surface 18 Biting claw 19 Fixed blade 20 Guide rail 21 Rack tooth 22 Rear surface 23 Fixed rack tooth 24 Rear surface 25 Cylinder support frame 26 Cylinder

Claims (1)

[Claims] 1. A feed screw 4 is erected on the side surfaces 5, 5 of a machine frame 1 provided laterally on a raising table 3 in a direction perpendicular to the diametrical direction of a strip coil and screwed onto the feed screw 4. Move
Moreover, the bite cutting claw 1 in which the cutting force support pin 10 is projectingly provided
1. A side surface 15 and a back surface 22 which engage with a moving member 8 in which 1 is axially inwardly attached to the tip end thereof and abut on a side surface 16 of the moving member 8.
Side surface 1 of the holding frame 14 that has a vertical cross section that is substantially collapsed with
5, 15 'are loosely fitted to the feed screw 4, and the biting claw 18 and the guide rail 20 are inwardly fixed to the tip of the holding frame 14 at a position facing the biting and cutting claw 11 inwardly. The blade 19 is attached, the rack teeth 21 are provided on the back surface 22 of the holding frame, and the fixed rack teeth 23 that move forward and backward by the cylinder 26 provided on the machine frame 1 side are meshed with the rack teeth 21.
A band cutting device for a multi-row coil, wherein 8 is fixed and the band is cut.