JPH0760389A - Pitch tool working device of spring manufacturing machine - Google Patents

Abstract

PURPOSE:To work the pitch tool to provide a specific pitch to the wire at the desired timing by working a swaying lever by an independent auxiliary working device from a main working device. CONSTITUTION:A first swaying lever 13, a second swaying lever 14 and a third swaying lever 15 are provided on a frame in a swayable manner through a pivot 12 respectively. The first swaying lever 13 and the second swaying lever 14 are swayed by a main working device 16 including a can 17 to be rotated by a main motor, a universal joint 18 or the like so as to push forward a member 11 to be pushed in an independent manner. Thus, the longitudinal position of a pitch tool 8 can be controlled according which swaying lever is pressed against the member 11 to be pushed. The third swaying lever 15 can be worked independently without restriction of the main working device 16 by the auxiliary working device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pitch tool operating device for a spring manufacturing machine.

[0002]

It is an object of the present invention to provide a wire rod which is pressed by a pair of wire feed rollers and is fed toward a bending die to be wound into a coil, that is, a pitch for giving a predetermined pitch to a spring body. It is an object of the present invention to provide a device that operates a tool at a desired timing.

[0003]

[Means for Achieving the Object] The present invention employs the following means in order to achieve the object. The present invention is
A pitch tool mounting rod is provided on the machine frame so that it can be moved back and forth with its front end protruding forward.This pitch tool mounting rod is biased rearward by a spring and is pressed against this pitch tool mounting rod. A member is provided, and at least two rocking levers that come into contact with the rear surface of the pressed member are rockably provided on the machine frame, and one rocking lever is operated by an auxiliary operating device that is independent of the main operating device. And the remaining rocking lever is adapted to be actuated by the main actuating device.

[0004]

The present invention has the following functions. Since one rocking lever is adapted to be actuated by an auxiliary actuating device which is independent of the main actuating device, by using the rocking lever, the pitch tool can be actuated at a desired timing. .

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to two embodiments shown in the drawings. In these examples, the same members are designated by the same reference numerals.

Embodiment 1 (see FIGS. 1 to 5) In Embodiment 1, the front means the right side of FIG. 1, the rear means the left side of FIG. 1, the left means the front side of FIG. Means the other side.

A wire-working space 5 is formed in front of a front wall 3 of a machine frame 2 of a spring manufacturing machine 1. As is well known, the wire-working space 5 is sandwiched between the wire-working space 5 and the wire-working space 5 so that the wire-working space 5 can be freely rotated in a pair. A wire feed roller (not shown) and a wire guide (not shown) are provided on the front wall 3, and a bending die (not shown) is provided on the front wall 3 so as to be located on the other side. A plurality of tool mounting slides (not shown) are provided on the front wall 3 so as to surround 5 and are slidable toward the wire processing space 5. Then, the wire W is pinched by the wire feed roller and sent toward the bending die to be wound into a coil, or bent / cut by a forming tool / cutting tool attached to the tool mounting slide. Predetermined processing such as is performed.

A pitch tool mounting rod 7 is provided on the machine frame 2 so as to be movable back and forth in a state in which a front end of the rod 7 is located in front of the front wall 3 and in the vicinity of the wire rod processing space 5. A guide rod 6 (see FIG. 2) parallel to the pitch tool attachment rod 7 is provided so as to be movable back and forth with its front end protruding forward of the front wall 3. A pitch tool 8 is attached to the front end of the pitch tool attachment rod 7. The pitch tool mounting rod 7 and the guide rod 6 are biased rearward by a spring 9. A pressed member 11 is handed over to the pitch tool mounting rod 7 and the guide rod 6, and a first swing lever 13, a second swing lever 14, and a third swing lever are provided on the rear surface of the pushed member 11.
The roller of the rocking lever 15 is adapted to abut. The first rocking lever 13, the second rocking lever 14, and the third rocking lever 15 are respectively connected to the machine frame 2 via the pivot 12.
It is provided so that it can swing freely. The first swing lever 13
The second swing lever 14 is provided with a cam 17 and a universal joint 18 which are rotated by a main motor (not shown).
A known main actuating device 16 provided corresponding to each of them, etc., is adapted to separately swing the pressed member 11 (pitch tool mounting rod 7) when necessary. Needless to say, the cam follower is biased by a spring (not shown) so as to come into contact with the cam 17. The third swing lever 15 is a ball screw mechanism 23 rotated by an auxiliary motor 22.
By means of the auxiliary actuating device 21 including the above, the member 11 (pitch tool mounting rod 7) is rocked so as to push it forward when necessary. As is clear from the above description, the first swing lever 13, the second swing lever 14, and the third swing lever 13
Since the rocking lever 15 is adapted to come into contact with the rear surface of the pressed member 11, which rocking lever is to be pressed against the pressed member 11
It is possible to control the front-back position of the pressed member 11 and thus the pitch tool 8 depending on whether or not the pressed tool 11 is hit. The third swing lever 15 can be independently operated by the auxiliary actuating device 21 without being restrained by the main actuating device 16.

In FIG. 5, W is a wire rod.

Embodiment 2 (see FIGS. 6 to 8) In this Embodiment 2, the front means the right side of FIG. 6, the rear means the left side of FIG. 6, and the left means the front side of FIG. 6 and the right side. Means the other side.

The second swing lever 14 is actuated by the main actuating device 16 as in the first embodiment. In the second embodiment, the first swing lever 13 is operated by the auxiliary actuating device 31. The auxiliary actuating device 31 has an auxiliary motor 32 that can rotate in the normal and reverse directions and a cam 33 that is rotated by the auxiliary motor 32 via a gear train.
7 is rotatably (rotatably irrespective of the cam shaft 35) fitted to the cam shaft 35. Machine frame 2 on the cam 33
A cam follower of a swing lever 36 swingably provided on the machine frame 2 contacts a slider 37 of the swing lever 36, and a groove 39 of a swing lever 38 swingably provided on the machine frame 2. The front and rear moving rod 40 is mounted on the swing lever 38 via the universal joint 18, and the front end portion of the front and rear moving rod 40 is mounted on the roller 42 rotatably mounted on the machine frame 2. The shaft portion 43 of the front-back moving rod 40 is fitted in a vertically long slot 44 at the upper end of the first swing lever 13. The forward / backward moving rod 40 is biased downward by a spring 45. With such a configuration, the first swing lever 13 is swung independently of the second swing lever 14. The mechanical mechanism itself for swinging the first swing lever 13 (from the cam 33 to the first swing lever 1
The mechanism itself up to 3) is the same as that of the second swing lever 14 and is publicly known. In addition, this Example 2
Then, in actual use, the first swing lever 13 is mainly used.

[0012]

The present invention has the following effects due to the above-described structure. Since the one rocking lever is adapted to be actuated by the auxiliary actuating device which is separate from the main actuating device, the pitch tool can be actuated at a desired timing by using this rocking lever. .

[Brief description of drawings]

FIG. 1 is a simplified side sectional view of a main part showing a first embodiment of the present invention.

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

FIG. 3 is an enlarged sectional view taken along line III-III of FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a model view showing an operating state of the pitch tool.

FIG. 6 is a simplified side cross-sectional view of a main part showing a second embodiment of the present invention.

7 is an enlarged sectional view taken along line VII-VII in FIG.

8 is an enlarged sectional view taken along line VIII-VIII in FIG.

[Explanation of symbols]

 1 Spring Making Machine 2 Machine Frame 3 Front Wall 7 Pitch Tool Mounting Rod 8 Pitch Tool 9 Spring 11 Pressed Member 13 First Swing Lever 14 Second Swing Lever 15 Third Swing Lever 16 Main Actuator 21 Auxiliary Actuator 31 Auxiliary actuator

Claims (1)

[Claims] 1. A pitch tool mounting rod is provided on a machine frame so as to be movable back and forth with its front end protruding forward, and the pitch tool mounting rod is biased rearward by a spring. The mounting rod is provided with a pressed member, at least two rocking levers that come into contact with the rear surface of the pressed member are rockably mounted on the machine frame, and one rocking lever is independent of the main actuator. A pitch tool actuating device for a spring maker, adapted to be actuated by an auxiliary actuating device, the remaining rocking levers being actuated by a main actuating device.