JPH0542528A - Reciprocating mechanism of blade section of multi-edged type cutter - Google Patents

Abstract

PURPOSE:To adjust the reciprocating stroke of a sliding frame finely by constituting the title reciprocating mechanism so as to move a crankshaft by a screw lever. CONSTITUTION:A motor 58 is operated, and a screw lever 52 is turned and driven, thus moving a crankshaft 32 screwed to the screw lever 52 along a path, in which an eccentric distance to the center of rotation of a rotating disc 16 continuously changes. Consequently, the stroke of a sliding frame 38 linearly moved through a connector 42 is adjusted. When the motor 58 is stopped, the movement of the crankshaft 32 is inhibited by a brake 56.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reciprocating mechanism for reciprocating blades of a multi-edge cutting machine, and more particularly to automatically adjusting a supporting position of a crankshaft on a rotary plate for adjusting stroke of a slide frame. The present invention relates to a reciprocating mechanism of a blade part of a multi-sided cutting machine equipped with a mechanism.

[0002]

2. Description of the Related Art Conventionally, for slicing or grooving a hard or brittle material such as an inorganic material into a thin plate,
As shown in FIG. 2, a plurality of thin band-shaped steel bands 10 for grinding, etc. are made parallel to each other by using spacers 12 and the like, with a constant gap provided between the side walls of the adjacent bands 10. The blade portion 14 of the multi-blade cutting machine is configured by standing and arranging the blade portion 14, and the blade portion 14 is fed to the blade portion 1 while the grinding liquid is appropriately supplied to the cutting processing portion of the workpiece.
4, each band 10 is stretched by applying tension in its longitudinal direction, and is reciprocally moved along the surface of the work piece such as an inorganic material to cut the work piece in a circular slice.

Therefore, as a reciprocating mechanism for reciprocating the above-mentioned blade portion 14 in a predetermined linear direction,
Conventionally, there is one shown in FIG. The structure will be described. In FIG. 3, reference numeral 16 is a disc-shaped rotary plate, and the rotary plate 1
Reference numeral 6 is rotatably supported about a rotary shaft 18. Reference numeral 20 denotes an electric motor, which has a belt 26 wound around a pulley 22 fitted to the rotating shaft of the electric motor 20 and a groove 24 provided around the outer peripheral wall of the rotating plate 16 via a belt 26. The rotary plate 16 is automatically rotated by the electric motor 20.

Reference numeral 32 is a crankshaft, and the bearing 2
8 is mounted rotatably around the crankshaft 32.
The crankshaft 32 is centered on the rotary shaft 18 of the rotary plate 16,
It is screwed into one of the screw holes 30 formed in the surface of the rotary plate 16 at predetermined intervals in a spiral shape, and is provided eccentrically with respect to the center of rotation of the rotary plate 16. Further, 38 is a slide frame, and each band 10 in the blade portion 14 described above.
While holding the entire blade portion 14 therein while applying tension to its longitudinal direction,
It is provided so as to be able to reciprocate along a rail 40 provided in parallel with the extending direction of. Reference numeral 42 denotes a joint body that connects the crankshaft 32 and the slide frame 38 to each other,
Is for converting the rotational movement of the above into the linear movement of the slide frame 38. Specifically, the crankshaft 32 of the joint body 42
A long guide frame 34 is provided at one end on the side, and the crankshaft 32 is fitted in a long hole 36 formed in the guide frame 34 along the longitudinal direction. The other end is a slide frame 3
It is attached to 8.

The conventional reciprocating mechanism of the blade portion has the above-mentioned structure, and its operation will be described below. First, when the electric motor 20 is operated to rotate the rotary plate 16 in a predetermined direction, the crankshaft 32 with the bearing 28 screwed to the rotary plate 16 rotates about the rotary axis of the rotary plate 16. , Reciprocates in the left-right direction within the elongated hole 36 of the guide frame 34. Along with this, the slide frame 38 linked to the joint body 42 reciprocates along the rail 40 in parallel with the tension direction of the band 10. As a result, the blade portion 14 and the plurality of bands 10 provided on the blade portion 14 also reciprocate, and the workpiece placed on the lower surface of the blade portion 14 is cut by the band 10 into a ring shape or the like.

[0006]

However, the reciprocating mechanism of the blade portion of the conventional multi-blade cutting machine described above has the following problems. Since the crankshaft 32 is screwed into the screw hole 30 on the surface of the rotating plate 16, the slide frame 38
In order to change the stroke of the band 10 and change the reciprocal movement distance of the band 10 with respect to the work piece, the crankshaft 32 is manually removed from the screw hole 30 currently screwed and another screw hole 3 is attached.
It must be manually moved to 0 and screwed on. However, it takes a lot of time and labor to interrupt and change the mounting position of the crankshaft 32 with respect to the surface of the rotary plate 16 during the cutting of the workpiece, and the cutting of the workpiece is difficult. Hinders the efficiency of. Therefore, the present invention has been made in view of the above-described conventional problems, and an object thereof is to provide a reciprocating mechanism of a blade portion of a multi-blade cutting machine that can efficiently perform slicing of a workpiece. .

[0007]

The present invention has the following constitution in order to achieve the above object. That is, a crankshaft protruding from the upper surface of the rotary plate at a position eccentric to the center of rotation of the rotary plate, and a plurality of bands holding a blade portion stretched in parallel at a predetermined interval, and a band. A slide frame guided to reciprocate in the stretching direction, and a joint for connecting the crankshaft and the slide frame to each other and converting the rotary motion of the rotary plate into the linear motion of the slide frame. In a reciprocating mechanism of a blade portion of a multi-blade cutting machine having, the crankshaft is arranged in the rotary plate, and the crankshaft is screwed at one end side thereof, and the crankshaft has a continuous eccentric distance with respect to a rotation center of the rotary plate. A screw rod movably supported along a changing path, a motor for rotationally driving the screw rod, and a brake for suppressing the movement of the crankshaft when the motor is stopped. The features.

[0008]

By operating the motor to drive the screw rod to rotate, the crankshaft screwed onto the screw rod can be moved along a path in which the eccentric distance with respect to the rotation center of the rotating plate changes continuously. Therefore, it is possible to adjust the stroke of the slide frame that linearly moves through the joint.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a reciprocating mechanism of a blade portion of the present invention, and reference numerals 10 to 42 are the same members as those in the conventional mechanism shown in FIG. A feature of the present invention is that the reciprocating mechanism is disposed in the rotary plate 16, the crankshaft 32 is screwed at one end side thereof, and the crankshaft 32 has an eccentric distance with respect to the rotation center of the rotary plate 16. A ball screw 52 as a screw rod that movably supports along a continuously changing path.
And a drive unit 46 including a motor 58 that rotationally drives the ball screw 52, and an electromagnetic brake 56 that serves as a brake that suppresses the movement of the crankshaft 32 when the motor 58 stops. ..

More specifically, the crankshaft 32 has a sliding member 48 having a through hole whose inner wall surface is threaded, and a bearing 28.
The structure is such that the attached crankshaft 32 is supported. The electromagnetic brake 56 is fixed to the support frame 54 via the metal fitting 80 on one end side of the ball screw 52, and the motor 58 is fixed on the opposite side. The electromagnetic brake 56 may be a known electromagnetic brake that applies a brake to the disc 82. The electromagnetic brake 56 releases braking when moving the crankshaft 32, and operates during cutting to brake and fix the ball screw 52. Also, the plate portion 6
On the lower surface of 0, a sensor 64 that detects a bouncing phenomenon that occurs in the workpiece 62 placed on the plate portion when the band 10 is partially worn, and a drive unit 46 that receives a signal from the sensor 64. Is provided to move the crankshaft 32 to different eccentric positions with respect to the center of rotation of the rotary plate 16 along the path. The control mechanism 50 receives the signal generated by the sensor 64 by detecting the bouncing phenomenon, and controls the rotation / stop of the electric motor 20, the rotation / stop of the stroke adjusting motor 58, and the operation control of the electromagnetic brake 56. Control panel 6
6 above.

Next, the operation will be described. The control mechanism 5
0 operates the motor 58 to rotate the ball screw 52 to move the sliding body 48 along the path to the eccentric position farthest from the rotation center of the rotary plate 16. The motor 58 is stopped and the electromagnetic brake 56 is activated to prevent the ball screw 52 from rotating. Next, the control mechanism 50 controls the electric motor 20.
Is operated to rotate the rotary plate 16. The bearing 28 provided on the upper surface of the rotary plate 16 rotates, and accordingly, the slide frame 38 connected by the joint 42 and the band 10 in the blade portion 14 start a linear reciprocating motion. As a result, the band 10 cuts the workpiece 62. If the side wall of the band 10 is worn away and a bounce phenomenon occurs after a long time, the sensor 64 provided on the lower surface of the plate portion 60 on which the workpiece is placed detects the bounce phenomenon and controls the signal. Send to 50. Control mechanism 5
0 receives the signal, stops the electric motor 20, releases the electromagnetic brake 56, rotates the motor 58 by a predetermined number of revolutions, and moves the sliding body 48 on the ball screw 52, that is, the bearing 28, by a predetermined distance (a bound phenomenon occurs. The eccentric distance (which does not occur) moves toward the center of rotation of the rotary plate 16. After that, the electromagnetic brake 56 is operated, the rotation of the ball screw 52 is suppressed, the electric motor 20 is operated again, and the rotary plate 16 is rotated. Thereby, the stroke of the linear reciprocating motion of the blade portion 14 is automatically corrected, and the cutting of the workpiece can be continuously performed.

Although various preferred embodiments of the present invention have been described above, the present invention is not limited to the above-mentioned embodiments, and the crankshaft with the bearing 28 is provided along a predetermined path on the rotary plate. As shown in FIG. 5, the mechanical portion that supports the crankshaft 32 does not use a ball screw but uses an ordinary screw 68 to move the inside of the dovetail groove 70 provided on the rotating plate into the crankshaft 32.
The piece 72 to which is connected is guided by the motor 58 so as to reciprocate, and the side wall 7 forming the dovetail groove 70 is also formed.
4 may be configured to be movable in the direction in which the dovetail groove width expands and contracts, and this one side wall 74 may be connected to the cylinder 76 to expand and contract the dovetail groove width to freely fix the piece 72 to the rotary plate 16. Of course, many modifications can be made without departing from the spirit of the invention.

[0013]

When the reciprocating mechanism of the blade portion of the multi-blade cutting machine according to the present invention is used, the crankshaft is moved by the screw rod, so that the reciprocating stroke of the slide frame can be finely adjusted. It is possible to automatically and easily change the stroke of the blade portion during the cutting process of the work piece without requiring any manual labor. Therefore, the cutting work of the inorganic material or the like can be made unmanned, and the cutting work can be significantly labor-saving and highly efficient.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a reciprocating mechanism of a blade portion of a multi-blade cutting machine according to the present invention.

FIG. 2 is a partially omitted perspective view of a blade portion.

FIG. 3 is a perspective view of a reciprocating mechanism of a blade portion of a conventional multi-blade cutting machine.

FIG. 4 is a plan view of the band with a side wall worn away, in which a part of the band is omitted.

FIG. 5 is a perspective view of a fixed portion of a crankshaft according to a second embodiment.

[Explanation of symbols]

 10 band 14 blade part 16 rotary plate 32 crankshaft 38 slide frame 42 joint body 52 screw rod 56 brake 58 motor

Claims (1)

[Claims] 1. A crankshaft projecting from the upper surface of the rotary plate at a position eccentric to the center of rotation of the rotary plate, and a plurality of bands holding a blade portion stretched in parallel at a predetermined interval. At the same time, a slide frame guided so as to be able to reciprocate in the direction in which the band is stretched, a joint for connecting the crankshaft and the slide frame, and converting the rotary motion of the rotary plate into a linear motion of the slide frame. In a reciprocating mechanism of a blade portion of a multi-blade cutting machine having a united body, the crankshaft is arranged in the rotary plate, the crankshaft is screwed at one end side thereof, and the crankshaft is eccentric to the rotation center of the rotary plate. A rod that movably supports along a path that continuously changes, a motor that rotationally drives the rod, and a brake that suppresses the movement of the crankshaft when the motor stops. Possession Reciprocating mechanism of the blade portion of the multi 刄式 cutting machine according to claim Rukoto.