JP2001260072A - Slit forming device for tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slit forming device for a tube capable of easily forming a linear slit on the tube for improving workability in forming work of the tube. SOLUTION: The slit 12a is formed by a cutter 15a while guiding the tube 12 so as to expand it by a rod like member 11 and pushing it to the cutter 15a by rollers 19 and 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tube slit forming apparatus, and more particularly to a tube slit forming apparatus for forming a slit in a tube so that the tube for protecting the wire harness can be easily mounted on the wire harness. .

[0002]

2. Description of the Related Art Generally, in a tube for protecting a wire harness, a slit is formed so that the tube can be easily attached to the wire harness, and the tube can be attached to the wire harness through this slit. As a forming method, for example, as shown in FIG. 4, scissors 1 or a cutter 2 are used, and a slit 3a is formed in the longitudinal direction of the tube 3.

[0003]

However, in such a conventional method for forming a slit, since the slit 3a is formed by the scissors 1 or the cutter 2, it takes time to form the slit 3a. In addition, the slit 3a may be bent instead of being straightened due to manual operation, and there is a problem that the workability of forming the slit 3a is extremely poor.

Accordingly, an object of the present invention is to provide a tube slit forming apparatus capable of easily forming a linear slit in a tube and improving the workability of the tube forming operation. And

[0005]

According to the first aspect of the present invention,
In order to solve the above problem, in a tube slit forming apparatus for forming a slit in the tube by cutting the longitudinal direction of the tube, a rod-shaped member that can be inserted into the tube, provided at one end of the rod-shaped member, A cutting member having a cutter extending in a direction perpendicular to the longitudinal direction of the tube; and a pair of cutting members provided in contact with both side portions of the rod member so as to sandwich the rod member, and feeding the tube toward the cutter. And an extruder having the above rollers.

In this case, when the tube is inserted through the rod-shaped member, the tube is pushed out toward the cutter by a pair of rollers, and the cutter forms a slit from one end to the other end of the tube. At this time, since the tube is guided by the rod-shaped member, a linear slit can be formed in the tube.

Therefore, the workability of the slit forming operation can be improved by forming the slit in a short time.

According to a second aspect of the present invention, in order to solve the above-mentioned problem, in the first aspect of the present invention, the rod-shaped member has a tapered shape from one end on the cutting member side to the other end. It is characterized by having.

In this case, when the tube is pushed to the cutting member side by the roller, the tube can be expanded,
The slit can be reliably formed.

According to a third aspect of the present invention, in order to solve the above-mentioned problem, in the second aspect of the present invention, the cutting member is movable in a longitudinal direction of the rod-shaped member.

In this case, by moving the position of the cutting member with respect to the rod-shaped member to a position corresponding to the diameter of the tube, it is possible to reliably prevent distortion when the tube is extruded and to expand the tube. It can be formed reliably.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 are views showing an embodiment of a tube slit forming apparatus according to the present invention.

First, the configuration will be described. 1 and 2, reference numeral 11 denotes a rod-shaped member through which a tube 12 can be inserted. The rod-shaped member 11 is fixed to a gantry 13 by a support member 11a. A cutting member 14 is provided at one end of the rod-shaped member 11, and the cutting member 14 has a triangular main body 15 and a column member 17 extending from below the main body 15 and fixed to a slide plate 16. ing. A cutter 15 a extends at a corner of the main body 15 so as to be orthogonal to the longitudinal direction of the rod 11, and the cutter 15 a faces the other end of the rod 11. The rod-shaped member 11 has a tapered shape from one end on the cutting member 14 side to the other end.

A lock piece 17 is formed in the main body 15, and the lock piece 17 a is urged by a spring 18 so that a saw-like uneven portion 11 b formed at the lower end of the rod-shaped member 11 is formed. Is adapted to be engaged. Further, a lever 17b is provided integrally with the lock piece 17a,
The lever 17b projects outside the main body 15. Thus, when the lever 17b is gripped and the lever 17b is moved downward, the engagement between the lock piece 17a and the saw-shaped uneven portion 11b is released, and the cutting member 14 becomes movable with respect to the rod-shaped member 11.

On the other hand, a pair of rollers 19, 20 are provided on both sides of the rod-shaped member 11, and the rollers 19, 20 are in contact with the rod-shaped member 11 so as to sandwich the rod-shaped member 11. .

The roller 19 is driven to rotate counterclockwise by a motor 21, and the roller 20 is driven to rotate clockwise by a motor 22. The tube 12 is moved along the rod 11 by a cutter 15a. It pushes out to the side.

Next, a method for forming a slit in the tube 12 will be described.

First, after the lever 17b is gripped and moved downward so that the diameter of the rod-shaped member 11 corresponds to the diameter of the tube 12, the engagement between the lock piece 17a and the saw-shaped uneven portion 11b is released. Then, the cutting member 14 is moved along the direction in which the rod-shaped member 11 extends. Next, when the hand is released from the lever 17b, the lock piece is released.
The cutting member 14 is locked by the bar-shaped member 11 because the spring 17a is urged by the spring 18 to engage with the saw-shaped uneven portion 11b.

Next, when the tube 12 is inserted through the rod member 11, the tube 12 is
, And a slit is formed from one end of the lower surface of the tube 12 to the other end by the cutter 15a. At this time, since the tube 12 is guided by the rod-shaped member 11, a straight slit can be formed in the tube 12.

As described above, in the present embodiment, the rollers 19 and 20 are guided while the tube 12 is extended by the rod-shaped member 11.
15a while pushing to cutter 15a
Since the slit is formed by the method, the slit can be formed in a short time, and the workability of the slit forming operation can be improved.

Further, since the rod-shaped member 11 is tapered from one end on the cutting member 14 side to the other end, a tube is formed.
When the tube 12 is pushed toward the cutting member 14 by the rollers 19 and 20, the tube 12 can be expanded, and the slit 12a can be reliably formed.

Further, since the cutting member 14 can be moved in the longitudinal direction of the bar-shaped member 11, the cutting member
By moving the position of 14 to a position corresponding to the diameter of the tube 12, distortion at the time of pushing out the tube 12 can be reliably prevented, and the tube 12 can be expanded, and the slit 12a can be formed in the tube 12 reliably. Can be.

[0024]

According to the first aspect of the present invention, a straight slit can be easily formed in the tube, and the workability of the tube forming operation can be improved.

According to the second aspect of the invention, when the tube is pushed out to the cutting member side by the roller, the tube can be expanded and the slit can be formed reliably.

According to the third aspect of the present invention, the position of the cutting member with respect to the rod-shaped member is moved to a position corresponding to the diameter of the tube, so that the tube can be reliably expanded to prevent distortion when the tube is pushed out. And a slit can be reliably formed in the tube.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of a tube slit forming apparatus according to the present invention, in which (a) is an external view thereof and (b).
Is an external view of the cutting device, and (c) is a main part configuration diagram of a rod-shaped member and a main body.

FIG. 2A is a top view of a cutting device according to an embodiment,
(B) is a side view of the cutting device, and (c) is a bottom view of the cutting device.

3A is a diagram showing a conventional slit forming method for forming a slit in a tube with scissors, FIG. 3B is a diagram showing a conventional slit forming method for forming a slit in a tube with a cutter, and FIG. It is a figure which shows the tube in which was formed.

[Explanation of symbols]

 11 Rod member 12 Tube 14 Cutting member 15a Cutter 19, 20 Roller

Claims (3)

[Claims] 1. A tube slit forming apparatus for forming a slit in a tube by cutting a longitudinal direction of the tube, comprising: a rod-shaped member insertable into the tube; and a rod-shaped member provided at one end of the rod-shaped member. A cutting member having a cutter extending in a direction perpendicular to the longitudinal direction, a pair of rollers provided in contact with both side portions of the rod-shaped member so as to sandwich the rod-shaped member, and feeding the tube toward the cutter; An extruder comprising: a tube slit forming apparatus; 2. The tube slit forming apparatus according to claim 1, wherein the rod-shaped member has a tapered shape from one end on the cutting member side to the other end. 3. A slit forming apparatus for a tube according to claim 2, wherein said cutting member is movable in a longitudinal direction of said rod-shaped member.