JPH09314236A - Pipe feeding device for pipe bending device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rapidly feed a pipe by pushing out the pipe under the control of excellent accuracy in a pipe feeding device for a pipe bending device. SOLUTION: A sprocket 21 is provided on each end of a frame 11, a chain C is wound around the sprocket 21, a pipe feeding device 30 is fixed to the chain C, and the pipe P is fed to a die 40 by turning the chain C. In the pipe feeding device 30 for a pipe bending device 10, a rack member 50 is fixed to the frame 11, a fixing tool 60 having a claw member 61 is arranged behind the pipe feeding device 30, a cylinder part 71 of a piston/cylinder mechanism 70 is fixed to the fixing tool 60, a tip of a piston rod 72 of the piston/cylinder mechanism 70 is fixed to a back side of the pipe feeding device 30, and the claw member 61 is attached/detached to/from the rack member 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe material feeding device for a pipe bending device.

[0002]

2. Description of the Related Art In a conventional pipe material feeding device for a pipe bending device, a cylinder portion of a piston / cylinder mechanism is fixed to a frame, and a tip of a piston rod is fixed to the pipe material feeding device. By pressing the pipe material feeding device in the direction of the mold by the cylinder mechanism, the wall thickness reduction and the mold resistance at the time of bending the pipe have been reduced.

[0003]

However, in such a conventional pipe material feeding device for a pipe bending device,
Since the pipe material was also supplied by the piston / cylinder mechanism, the stroke of the piston had to be taken longer, resulting in the inconvenience that it was difficult to make the device itself compact and the supply speed of the pipe material had to be slowed down. did.

An object of the present invention is to eliminate such inconvenience.

[0005]

In order to achieve the above object, in a pipe material feeding device for a pipe bending apparatus according to the present invention, a frame is provided with a die and a clamp tool, and sprockets are provided at both ends of the frame, respectively. A pipe material feeding device for a pipe bending device, in which a chain is wound around these sprockets, a pipe material feeding device is fixed to the chain, and the pipe material is fed to the mold by the rotation of the chain. A fixture having a pawl member is disposed at the rear of the pipe material feeding device while fixing the member, the cylinder portion of the piston / cylinder mechanism is fixed to the fixture, and the tip of the piston rod of the piston / cylinder mechanism is fixed at the end of the piston rod. It is fixed to the back of the pipe material feeding device, and the pawl member is attached to the rack member. Since you removably, after supplying pipe material into a mold by driving the sprocket, piston
If the cylinder part of the cylinder mechanism is fixed to the rack member by the pawl member and the piston / cylinder mechanism is operated in this state, the fixing of the fixture to the rack member is reliable and it can withstand strong power. It is possible to press the pipe material toward the mold under various controls.

Further, in the pipe material feeding device for a pipe bending apparatus according to the present invention, the frame is provided with a mold and a clamp tool, and sprockets are provided at both ends of the frame, and a chain is wound around these sprockets. A pipe material feeding device for a pipe bending device, wherein a pipe material feeding device is fixed to a chain and the pipe material is supplied to the mold by the rotation of the chain, and a fixture having a pawl member is installed on the pipe material feeding device and A rack member is arranged so as to be movable back and forth along the pipe material feeding device, and the cylinder portion of the piston / cylinder mechanism is fixed to the frame, and
Since the tip of the piston rod of the cylinder mechanism is fixed to the rack member and the pawl member can be engaged with and disengaged from the rack member, the pipe material feeding device is provided after the pipe material is supplied to the mold by driving the sprocket. Fixed to the rack member with a pawl member, and in this state,
When the cylinder mechanism is operated, the fixture is securely locked to the rack member and can withstand strong power, so that the pipe material can be pressed in the mold direction under high-precision control.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, 10 is a pipe bending apparatus and 11 is its frame. Reference numerals 21 and 21 denote sprockets, which are installed at both ends of the frame 11. The sprockets 21, 21 are driven by an electric motor (not shown). C is a chain, which is wound around the sprockets 21 and 21. 30 is a pipe material feeding device, and the frame
It is installed along 11 so that it can move forward and backward. This pipe material feeding device 30 is fixed to the chain C, and the chain C
It moves back and forth according to the rotation of. Reference numeral 31 is a chuck of the pipe material feeding device 30, and holds the rear end portion of the pipe material P. Incidentally, 40 is a mold, which is installed on the frame 11. The mold 40 is for following along when the pipe material P is bent. A clamp tool for holding the pipe material P with respect to the mold 40 is not shown.

Next, 50 is a rack member, which is fixed to the frame 11. The rack member 50 is arranged along the advancing / retreating direction of the pipe material feeding device 30. Reference numeral 60 denotes a fixture, which is arranged behind the pipe material feeding device 30. This fixture 60 is a pawl member protruding downward.
Has 61. By advancing and retracting the pawl member 61, it is possible to engage with the rack member 50 or release the engagement. Reference numeral 70 denotes a piston / cylinder mechanism, the cylinder portion 71 of which is fixed to the fixture 60, and the tip of the piston rod 72 is fixed to the back portion of the pipe material feeding device 30. Therefore, if the piston rod 72 is pushed out by operating the piston / cylinder mechanism 70 while the fixture 60 is locked to the rack member 50, the pipe material P can be pushed out toward the die 40. .

FIG. 2 shows another embodiment. In this embodiment, the rack member 50 is installed so as to be movable back and forth with respect to the frame 10, and the fixture 60 is fixed to the pipe material feeding device 30. Further, the cylinder portion 71 of the piston / cylinder mechanism 70 is fixed to the frame 10, and the tip of the piston rod 72 is fixed to the rack member 50. Therefore, with the fixture 60 locked to the rack member 50, the piston / cylinder mechanism is
When the piston rod 72 is pushed out by operating 70, the rack member 50 is pushed out and the pipe material P is pushed out toward the die 40 direction.

[0010]

The pipe material feeding device for a pipe bending device according to the present invention is provided with a die and a clamp tool on a frame and sprockets are provided at both ends of the frame, and a chain is wound around these sprockets.
In a pipe material feeding device for a pipe bending device, wherein a pipe material feeding device is fixed to this chain and the pipe material is fed to the mold by the rotation of the chain, a rack member is fixed to the frame and the pipe material feeding device A fixture having a pawl member is arranged at the rear, the cylinder portion of the piston / cylinder mechanism is fixed to the fixture, and the tip of the piston rod of the piston / cylinder mechanism is fixed to the back portion of the pipe material feeding device, and Since the pawl member can be engaged with and disengaged from the rack member, after supplying the pipe material to the mold by driving the sprocket, the cylinder portion of the piston / cylinder mechanism is fixed to the rack member by the pawl member, and in this state, When the piston / cylinder mechanism is operated, the fixture is securely locked to the rack member and the power is strong. Also stand, the pipe can be pressed in the mold direction under high-precision control.

Therefore, if the pipe material feeding device for the pipe bending device is used, the pipe material can be supplied to the mold by the drive of the motor, so that the stroke of the piston can be shortened and the device itself can be made compact. It is easy and can supply pipe material quickly.
Furthermore, the pipe material can be extruded under highly precise control.

Further, in the pipe material feeding device for a pipe bending device according to the present invention, a fixture having a pawl member is installed in the pipe material feeding device, and a rack member is arranged so as to be able to advance and retreat along the pipe material feeding device. And fixing the cylinder portion of the piston / cylinder mechanism to the frame, fixing the tip of the piston rod of the piston / cylinder mechanism to the rack member, and disengaging the pawl member from the rack member. Therefore, after the pipe material is supplied to the mold by the drive of the sprocket, the pipe material feeding device is fixed to the rack member by the pawl member, and in this state, the piston / cylinder mechanism is operated, and the rack of the fixture is fixed. It can be firmly locked to the member and can withstand strong power, and can press the pipe material in the direction of the mold under high-precision control. Kill.

Therefore, if the pipe material feeding device for the pipe bending device is used, the pipe material can be supplied to the mold by the drive of the motor, so that the stroke of the piston can be shortened and the device itself can be made compact. It is easy and can supply pipe material quickly.
Furthermore, the pipe material can be extruded under highly precise control.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of a pipe material feeding device for a pipe bending device according to the present invention.

FIG. 2 is a sectional view of a second embodiment of a pipe material feeding device for a pipe bending device according to the present invention.

[Explanation of symbols]

 10 ... Frame 21 ... Sprocket 30 ... Pipe material feeding device 40 ... Mold 50 ... Rack member 60 ... Fixing tool 61 ... Pawl member 70 ... Piston / cylinder mechanism 71 ... Cylinder part 72 ... Piston rod C ... Chain P ... Pipe material

Claims (2)

[Claims] 1. A frame is provided with a mold and a clamp tool, and sprockets are provided at both ends of the frame, and a chain is wound around these sprockets.
In a pipe material feeding device for a pipe bending device, wherein a pipe material feeding device is fixed to this chain and the pipe material is fed to the mold by the rotation of the chain, a rack member is fixed to the frame and the pipe material feeding device A fixture having a pawl member is arranged at the rear, the cylinder portion of the piston / cylinder mechanism is fixed to the fixture, and the tip of the piston rod of the piston / cylinder mechanism is fixed to the back portion of the pipe material feeding device, and A pipe material feeding device for a pipe bending device, wherein the pawl member is detachable from the rack member. 2. A frame is provided with a mold and a clamp tool, and sprockets are provided at both ends of the frame, and a chain is wound around these sprockets.
In a pipe material feeding device for a pipe bending device, which fixes a pipe material feeding device to this chain and supplies the pipe material to the mold by the rotation of the chain, a fixture having a pawl member is installed on the pipe material feeding device. In addition, a rack member is arranged so as to be able to move forward and backward along the pipe material feeding device, the cylinder portion of the piston / cylinder mechanism is fixed to the frame, and the tip of the piston rod of the piston / cylinder mechanism is fixed to the rack member. In addition, the pipe member feeding device for a pipe bending device, wherein the pawl member is detachable from the rack member.