JP2546655Y2 - Work feed and gripping device for cutting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a work feeding and gripping device used for a cutting machine for cutting a long work such as a horizontal band saw machine into a predetermined length.

[Conventional technology]

A cutting machine, for example, a horizontal band saw machine stretches a band saw blade on a saw frame provided on a base frame so as to be able to move up and down as a cutting section,
A main work gripping device is provided slightly behind the cut portion, a rear work feed device is provided behind the cut portion, and a front work gripping device and a front work feed device are mounted on the front side of the cut portion in the front-rear direction. Are provided at intervals.

Then, the work is sent toward the cutting section by the rear work feeding device, and the work is gripped and fixed by the main work gripping device, or the work cut by the front work feeding device is sent and gripped by the front work gripping device. They are fixed and cut.

[Problem to be Solved by the Invention] As described above, the front work feeding device and the front work gripping device are provided at an interval in the front-rear direction, respectively, ahead of the cutting portion. And the entire cutting machine becomes large, requiring a large installation area.

Therefore, an object of the present invention is to provide a work feeding and gripping device for a cutting machine which can solve the above-mentioned problem.

[Means for solving the problem]

In the present invention, a main work holding device D is provided on the base frame 1 adjacent to the cutting portion A, and a rear work feeding device B is provided near the rear of the base frame 1 in the work transfer direction with the main work holding device D as a boundary, A work feeding and gripping device C is provided on the base frame 1 near the front of the workpiece transfer direction with respect to the main work gripping device D, and the rear work feeding device B and the work feeding and gripping device C are provided.
While the workpiece is continuously conveyed, the workpiece is gripped by the main workpiece gripping device D, the workpiece is cut by the cutting unit A, and the workpiece is sent by the workpiece feeding and gripping device C, and is gripped by the cutting unit A. In a cutting machine for cutting a workpiece, the workpiece feeding and gripping device D is provided with a fixed vise 24 and a movable vise 25 at an upper portion of a housing 22 and a workpiece clamp.
A feed roller mechanism 20 is provided in the housing 22 at a position substantially the same as the center of the fixed vice 24 and the movable vise 25 in the front-rear direction with the center of rotation of the feed roller 23 connected to a drive source in the housing 22 being vertically movable. It is a work feeding and gripping device of a cutting machine.

According to the present invention, the work cut at the cutting section A can be sent by the work feeding and gripping device C, and can be gripped and cut at the cutting section A.

The work can be transported by moving the feed roller 23 of the work feeding and gripping device C upward, and the work can be reliably gripped by the fixed vice 24 and the movable vise 25 by moving the feed roller 23 downward. The work clamp 21 and the work clamp 21 can be provided in one housing 22 to form a unit.

Since the center of rotation of the feed roller 23 and the center in the front-rear direction of the fixed vise 24 and the movable vice 25 are substantially at the same position, the distance in the front-rear direction from the cutting section A to the feed roller mechanism 20 and the distance from the cutting section A to the work lamp 21 Since the distance in the front-rear direction is the same, the projecting length from the cutting portion A is shortened, and the entire cutting machine can be reduced in size.

〔Example〕

As shown in FIGS. 1 and 2, a table 2 is provided at the front and rear central portions of a base frame 1, and a main column 3 and a sub column 4 are erected on the table 2, and the main column 3 And a saw frame 5 is provided along a sub column 4 so as to be able to move up and down by a cylinder (not shown), and an endless band saw blade 8 is wound around a driving wheel 6 and a driven wheel 7 provided on the left and right sides of the saw frame 5. This is the cut portion A.

A rear work feeding device B is provided on the rear side of the base frame 1, and a work feeding and gripping device C is provided on the front side, and a rear roller conveyor 9 and a front roller conveyor 10 are connected to the base frame 1. It is installed so that the workpiece W can be transported continuously.

A main work holding device D is provided on the table 2,
The main work gripping device D includes a fixed vise 11 provided on the base frame 1 side, which is long in the front-rear direction, and a movable vise provided movably by a cylinder 13 on a frame 12 provided on the table 2.
It consists of 14.

The work feeding and gripping device C includes a feed roller mechanism 20 and a work clamp 21. The feed roller mechanism 20 is provided with a feed roller 23 in a box-shaped housing 22 so as to be able to move up and down. It comprises a fixed vise 24, a movable vise 25, and a cylinder 26 provided at the upper end of the cylinder.

Although the fixed vise 24 is integrated with the fixed vise 11 of the main work holding device D, it may be separate.

The front and rear vertical walls of the housing 22 as shown in FIGS.
One side frame 27 and the other side frame 28 are sliding pieces 2 between 22a and 22a.
The feed roller 23 is provided between the upper part of the one side frame 27 and the upper part of the other side frame 28 so as to be vertically movable through the feed roller 23.
The support shaft 30 is rotatably mounted on the bearing 31 so as to be rotatable.
A driven chain wheel 32 provided on one side of 30 is connected by a chain 35 to a drive chain wheel 34 provided on an output side 33a of a hydraulic motor 33 mounted on one side frame 27, and front and rear vertical walls 22a, One side link 3 with horizontal pin 36 between 22a
7 and the other side link 38 are supported so as to be able to swing up and down, and one end of one side and the other side link 37, 38 are connected to the one side / other side frame 27, 28.
And the other end is connected to a joint 40.The joint 40 is connected to a piston rod 42a of a lift cylinder 42 provided in the housing 22 by a bracket 41, and the lift cylinder 42 When the joint 40 is moved up and down by expanding and contracting the piston rod 42a, the one-side and other-side links 37 and 38 swing up and down with the horizontal pin 36 as a fulcrum, and the one-side and other-side frame 2
7 and 28 move downward and upward, and the feed roller 23 descends into the housing 22 or protrudes above the housing 22. At the same time, the hydraulic motor 33 moves up and down. The interlocking portion can be easily interlocked with the chain 35 or the like without being displaced.

In other words, if the hydraulic motor 33 is provided on the housing 22 side, the chain 35 expands and contracts when the feed roller 23 moves up and down. Therefore, a special complicated structure is required.

A pair of front and rear guide plates 43, 43 are provided in the longitudinal direction at the upper ends of the front and rear vertical walls 22a, 22a of the housing 22, and a carrier slidably engaged with the guide plates 43 at the lower part of the movable vice 25. The member 44 is provided and the cylinder
The movable vice 25 moves smoothly to the left and right by expanding and contracting 26, and the notch recesses on the lower surface of the fixed vise 24 and the lower surface of the movable vise 25 face the upper portions of the one and other frames 27, 28. Grooves 45 and 46 are formed respectively, and when the feed roller 23 projects upward as described above, the one-side and other-side frames 27 and 28 project above the upper part of the housing 22 and interfere with the fixed vice 24 and the movable vise 25. I try not to.

The rear work feeding device B has the same structure as the feed roller mechanism 20 of the work feeding and gripping device C.

Next, an example of a work cutting operation will be described. The feed roller 23 of the rear work feed device B and the feed roller 23 of the feed roller mechanism 20 are moved upward to drive the hydraulic motor 33 to rotate and convey the work W from the rear to the front.

Then, the workpiece W is gripped and fixed by the movable vice 14 and the fixed vise 11 of the main workpiece gripping device D, and the band saw blade 8 is rotated to descend together with the saw frame 5 to cut the workpiece W.

At this time, each of the feed rollers 23 descends and the work W
I do not touch the

After the cutting is completed, the work W is conveyed forward in the same manner as described above, and the work W is gripped and fixed by the work clamp 21 of the work feeding and gripping device C, and the work W is cut into a predetermined size as described above.

FIGS. 6 to 8 show another example of the workpiece feeding and gripping device C, in which a sprocket 50 is provided at one end of a support shaft 30, and a chain 52 is wound over the sprocket 50 and a sprocket 51 on the driving side. The chain 52 is engaged with a tension sprocket 54 provided on an arm 53, and the arm 53 is urged to swing in the chain tension direction. It does not come off the sprocket.

[Effect of the invention]

Work feeding and gripping device C for work cut at cutting section A
, And can be gripped and cut at the cutting section A.

The work can be transported by moving the feed roller 23 of the work feeding and gripping device C upward, and the work can be reliably gripped by the fixed vice 24 and the movable vise 25 by moving the feed roller 23 downward. The work clamp 21 and the work clamp 21 can be provided in one housing 22 to form a unit.

In addition, the rotation center of the feed roller 23 and the fixed vice 2
4. Since the center of the movable vise 25 in the front-rear direction is substantially at the same position, the front-rear distance from the cutting section A to the feed roller mechanism 20 and the front-rear distance from the cutting section A to the work lamp 21 are the same.

Therefore, the entire length of the cutting machine can be reduced by shortening the length of protrusion from the cutting portion A.

[Brief description of the drawings]

1 is an overall front view, FIG. 2 is a left side view, FIG. 3 is a front view of a workpiece feeding and gripping device, FIGS. 4 and 5 are FIGS. 6 is a front view, a plan view, and a right side view showing another example of the workpiece feeding and gripping device. 20 is a feed roller mechanism, 21 is a work clamp, 22 is a housing, 23 is a feed roller, 24 is a fixed vise, and 25 is a movable vise.

Claims (1)

(57) [Scope of request for utility model registration] 1. A main work gripping device D is provided on a base frame 1 adjacent to a cutting portion A, and a rear work feeding device B is provided near the rear of the base frame 1 in the work transfer direction with the main work gripping device D as a boundary. A work feeding and gripping device C is provided near the front part of the base frame 1 with respect to the main work gripping device D in the work transfer direction, and the rear work feeding device B and the work feeding and gripping device C continuously work. In a cutting machine that transports and grips the workpiece with the main workpiece gripping device D, cuts the workpiece at the cutting section A, sends the workpiece with the workpiece feeding and gripping device C, and grips and cuts the workpiece at the cutting section A. The work feeding and gripping device D is provided with a fixed vise 24 and a movable vise
In the housing 22, a feed roller 23 connected to a drive source is vertically movable and the center of rotation is provided at substantially the same position as the center of the fixed vice 24 and the movable vise 25 in the front-rear direction to form the feed roller mechanism 20. Characteristic work feeding and gripping device for cutting machine.