JP2002120034A - Spring manufacturing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a working performance of a spring capable of changing a working state of the spring with using one spring manufacturing machine. SOLUTION: By moving a wire feed unit 4 having a final wire guide 19 and a wire feed roller 20 back/forth for a wire working unit 6, a position to a tool of a bending die, etc., of the wire fed out to a wire working space 11 is changed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a spring making machine.

[0002]

2. Description of the Related Art Conventionally, the following types of spring manufacturing machines are known. It has a wire rod feeding unit and a wire rod processing unit, and at least one of the wire rod feeding unit and the wire rod processing unit is movable back and forth, the wire rod processing unit has a casing having a vertical front wall, and a casing for the casing. A wire rod processing space formed in front of the front wall, a final wire rod guide fixed to the front wall, having a wire rod passage through which the wire fed out toward the wire rod processing space passes; At least one bending die slide facing the final wire guide and provided on the front wall so as to be able to advance and retreat with respect to the wire processing space; and at least one slide provided on the front wall so as to be able to advance and retreat with respect to the wire processing space. A cutter mounting slide, and the wire rod feeding unit has
A casing having a vertical front wall, and at least one pair of wire feed rollers provided rotatably on the front wall of the casing and feeding the wire toward the final wire guide while nipping the wire; On the outer peripheral surface of the feed roller, at least two annular grooves for a wire are formed around the feed roller, and by adjusting the front-rear position of a unit that can move back and forth among the wire feed unit or the wire processing unit, a pair of wires is formed. It is known that each wire passage formed by an annular groove for a wire at a portion where a wire feed roller abuts is successively connected to a wire passage of a final wire guide (JP-A-11-3365).
No. 9).

[0003]

Disadvantages of the prior art The conventional spring making machine has the following disadvantages. In the conventional spring making machine, the final wire rod guide is fixed to the wire rod processing unit side, that is, the final wire rod guide cannot change the relative front and rear position with a tool such as a bending die. For this reason, there is a drawback that the position of the wire fed into the wire processing space with respect to a tool such as a bending die is changed, and a single spring manufacturing machine cannot change the processing state of the spring.

[0004]

The present invention employs the following means to solve the above-mentioned drawbacks. According to the first aspect of the present invention, a wire rod feeding unit can be moved back and forth in the wire rod processing unit, and the wire rod processing unit has a machine frame having a vertical front wall and a wire rod machining space formed in front of the front wall of the machine frame. A bending die slide provided on the front wall so as to be able to advance and retreat with respect to a wire rod processing space; and a tool mounting slide provided on the front wall so as to be able to advance and retreat with respect to the wire rod processing space. The feed unit includes a front-rear moving body having a vertical front wall, a final wire guide fixed to the front wall of the front-rear moving body, and having a wire rod passage for guiding a wire fed toward the wire processing space, and a front wall of the front-rear moving body. And at least a pair of wire feed rollers that are rotatably provided to feed the wire toward the final wire guide while being pressed.

[0005]

According to the present invention, the following effects can be obtained by the above configuration. According to the invention of claim 1, by moving the wire rod feeding unit having the final wire rod guide and the wire rod feeding roller back and forth with respect to the wire rod processing unit, that is, the bending die and the like of the wire rod fed into the wire rod processing space. By changing the front-back position with respect to the tool, the processing state of the spring can be changed by one spring manufacturing machine, and the spring processing performance of the spring manufacturing machine can be improved.

[0006]

Embodiments of the present invention will be described below. In this description, “front” refers to the front side of FIG. 1, “rear” refers to the back side, “left” refers to the left side in FIG. 1, and “right” refers to the right side in FIG.

The spring manufacturing machine 1 includes a base 3, a wire feed unit 4 which is movable at the center in the left-right direction of the base 3 by means to be described later, and a wire feed unit fixed to the base 3. And a wire rod processing unit 6 having a space 5 opened before and after the unit 4 is fitted.

The wire rod processing unit 6 includes a vertical front wall 9.
A machine frame 8 having the space 5 and a wire processing space 11 formed in front of a front wall 9 of the machine frame 8, and the front wall 9 is provided on the front wall 9 so as to be able to advance and retreat with respect to the wire processing space 11. It has a bending die slide 12 and a required number of tool mounting slides 13 provided on the front wall 9 so as to be able to advance and retreat with respect to the wire rod processing space 11. The bending die slide 12 and the tool mounting slide 13 are operated by a known driving device (not shown), and a bending die (not shown) is mounted on the bending die slide 12, and the tool mounting slide 13 is provided. A tool (not shown) such as a cutter and a forming tool is attached to the cradle.

The wire feed unit 4 includes a vertical front wall 1.
And a wire processing space 1 fixed to an upper part of a front wall 17 of the front and rear moving body 16.
A final wire guide 19 having a wire passage (not shown) for guiding the wire fed out toward the front wall 1;
At least a pair of wire feed rollers 20 that are rotatably provided to feed the wire toward the final wire guide 19 while being pinched, and a wire that is provided on the front wall 17 so as to be located between the wire feed rollers 20. And an auxiliary wire guide 21 having a passage (not shown).

The fore-and-aft moving body 16 is adapted to be moved back and forth by a known operating device 22 having a ball screw mechanism and a motor. The wire rod 2
Reference numeral 0 denotes a final wire guide 19 by operating a known actuator (not shown) provided in the front-rear moving body 16.
Rotate to send out toward.

With such a configuration, the wire rod feeding unit 4 having the final wire rod guide 19 and the wire rod feeding roller 20 is moved back and forth with respect to the wire rod processing unit 6, that is, the wire rod fed into the wire rod processing space 11 [ 2 (the dashed line W indicates a virtual vertical plane parallel to the front wall 17 including the center line of the wire).
By changing the front and rear positions with respect to a tool such as a bending die, the processing state of the spring can be changed by one spring manufacturing machine, and the spring processing performance of the spring manufacturing machine can be improved.

The manufacturing of the spring itself is the same as that of the conventional spring manufacturing machine. However, as described above, the wire working unit 4 is moved back and forth to cause a change in the processing state of the spring. The performance can be improved.

[0013]

[Modifications and the like] Modifications and the like will be described below. (1) The mechanism for moving the wire feed unit 4 back and forth is optional. (2) The number of tool mounting slides 13 is arbitrary.

[Brief description of the drawings]

FIG. 1 is a partially fragmented front view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 3 base 4 wire feed unit 5 space 6 wire work unit 8 machine frame 9 front wall 11 wire work space 12 slide for bending dies 13 tool mounting slide 16 front and rear moving body 17 front wall 19 final wire guide 20 wire feed roller 21 auxiliary wire guide 22 Actuator

Claims (1)

[Claims] 1. A wire rod feeding unit is made to be able to move back and forth in a wire rod processing unit, the wire rod processing unit includes a machine frame having a vertical front wall, a wire rod machining space formed in front of the front wall of the machine frame, A bending die slide provided on the front wall so as to be able to advance and retreat with respect to a wire processing space; and a tool mounting slide provided on the front wall so as to be able to advance and retreat with respect to the wire processing space, wherein the wire feed unit is provided. Is a front-rear moving body having a vertical front wall, a final wire guide fixed to the front wall of the front-rear moving body and having a wire rod passage for guiding a wire fed out to the wire processing space, and a front wall of the front-rear moving body. A spring manufacturing machine having at least a pair of wire feed rollers freely provided and sending out a wire toward a final wire guide while pressing the wire.