JPS6040636A - Moving member control device in spring manufacturing machine - Google Patents

Abstract

PURPOSE:To change a stroke and an initial position of a moving member by providing two cam shafts, supporting a cam follower by both ends of a rocking lating rod, and operating a moving member of a cutting tool through a link mechanism by the rocking rod. CONSTITUTION:In a spring manufacturing machine 1 for operating a cutting tool 13 through a rocking rod 22, a sliding rod 19, a rocking lever 16, a connecting rod 15 and a slide 14 by a rotation of the second cam shaft 28, when changing a stroke of the tool 13 and its initial position, a position of a cam 24 to a cam follower 23 is changed by rotating the first cam shaft 27 and the cam 24. In this case, the shaft 27 and the shaft 28, and also the cam 24 and the cam 25 are rotated simultaneously, respectively, by fitting each gear engaged mutually with the shafts 27, 28, and a complicated and varied movement which cannot be given by only the cam 25 is given. In this way, a stroke and an initial position of a moving member can be changed easily and in a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a moving member control device in a spring manufacturing machine.

A spring manufacturing machine uses a motor to rotate a plurality of cams, and the rotation of these cams operates a known power transmission mechanism such as a swing lever or a link mechanism.

Ultimately, it is designed to operate the slides of tools such as bending dies, pitch tools, and cutting tools.

By the way, when manufacturing springs, it is necessary to adjust the strokes of the slides and their initial positions depending on the type of spring, but with conventional spring manufacturing machines, this adjustment is done using a swing lever or link. Since this is done by means such as changing the length, it is difficult to adjust, and it takes time to adjust, resulting in poor work efficiency.

This invention solves the above drawback by using two cams.

The present invention will be explained below based on embodiments shown in the drawings.

Two pairs of upper and lower feed rollers 3 are provided for feeding the wire rod W to the front surface of the 1riJ wall 2 of the spring manufacturing machine 1, and eight pairs of wire guides 4 are provided to guide the wire rod W sent out by these feed rollers 3. It is provided on the front wall 2. A wire rod processing section (wire rod processing space) 5 is formed in front of the left wire guide 4. A bending die 6 is provided so as to face the left line guide 4, and this bending die 6 is attached to a slide 7 that is attached to the front wall 2 so as to be able to move left and right, and this slide 7 is rotated by a spring (not shown). It is biased in the direction of contacting the stopper 8. This slide 7 is used as a cam 9 when manufacturing a deformable spring. It can be moved left and right by a swing lever 10. The wire processing section 5 is provided with a core metal 11 and a pitch tool 12.

A cutting tool 13 for cutting the wire W in cooperation with the core metal 1 is removably attached to a slide 14, and the slide 14 is movable up and down with respect to the front wall 2. A connecting rod 15 is pivotally connected,
The left end of a swing lever 1G is pivotally attached to the lower end of this connecting rod 15, and this swing lever 1G is attached to the front wall 2 via a support shaft 17 at the middle of its length, and this swing lever IG
A long hole 18 is formed on the right side of the slide rod 19, and a pin 20 at the upper end of the sliding rod 19 is fitted into this long hole 18. Sliding rod 19
is fitted into a guide member 21 attached to the front wall 2 so as to be vertically movable, and a swinging rod 22 is pivotally attached to the lower end of the sliding rod 19 at the middle of its length. Cam followers 23 are attached, and each of these cam followers 23 has a first cam follower 23 attached thereto. It is in contact with the second cams 24 and 25. The cam follower 23 is the first. The sliding rod 19 is urged downward by a spring 26 so that it does not separate from the second cams 24, 25. Each of the first and second cams 24 and 25 includes a first and second cam rotatably provided on the front wall 2. It is detachably attached to the second camshafts 27 and 28. The first camshaft 27 is connected to a rotational shaft of a motor (not shown) that controls the rotational position of the first camshaft 27.
The position of the cam 24 can be controlled.

That is, the first camshaft 27 does not rotate all the time, but is rotated only when controlling the stroke of the slide 14 and its initial position. Therefore, it goes without saying that the first camshaft 27 can be rotated by a manual handle instead of the motor. The second camshaft 28 is connected to other slides and the connecting rod 15 by a main motor that operates each slide of the spring manufacturing machine l. Slide 1
4, the cutting tool 13 can be activated.

1, in order to change the stroke of the cutting tool 13 and its initial position, the first cam shaft 27, that is, the first cam 24 is rotated, and the first cam 24 is rotated relative to the cam follower 23 at the left end of the swing rod 22. All you have to do is change the position of .

Next, a modification will be explained.

Instead of attaching a motor to the first camshaft 27, a gear is fitted to the first camshaft 27, a gear that meshes with this gear is fitted to the second camshaft 28, and the first camshaft 27 is connected to the second camshaft. 2
Make sure to rotate it at the same time as 8. In this way, by rotating the first cam 24 at the same time as the second cam 25, it is possible to give the slide 14 complex and varied movements that cannot be provided by the rotation of the second cam 25 alone.

It goes without saying that the device of the present invention can also be used to control moving members other than slides, such as swing levers.

According to the above, this invention [Accordingly, the first. By rotating at least -H of the second cam, the fulcrum position of the swing rod passed to them can be changed, and the stroke and initial position of moving members such as slides can be changed extremely easily and in a short time. Can be changed.

[Brief explanation of the drawing]

FIG. 1 is a partially exploded front view showing an embodiment of the present invention. ■... Spring manufacturing machine, 19... Sliding rod, 21... Guide member, 22... Rocking rod, 28... Cam follower,
24...1st cam, 25.2nd cam, 27...1st camshaft, 28.2nd camshaft Patent applicant: Shinko Machinery Co., Ltd. Representative Patent Attorney Tetsuo Onishi

Claims (1)

[Claims] The first of twelve. A first degree and a second cam are attached to the second cam shaft, respectively. 2nd cam c
Swing rod (A) with both ends touching A (C) directly or indirectly through cam followers (A) and (C) at both ends.
is the first. It is passed to the second cam (c) (c) and this rocking rod (
A sliding rod 0 is pivotally mounted in the middle of the length of b), and this sliding rod 0 is guided by the guide member V so that it can move forward and backward, and is connected to the sliding rod αO directly or through a link mechanism. A moving member control device in a spring manufacturing machine to which a moving member 04) is indirectly attached. 2. The moving member control device in a spring manufacturing machine according to claim 1, wherein the moving member 0→ is a slide for attaching a tool. 3. 1. above. At least 10,000 of the second cam (c) (c) of the first cam. The second camshaft @) is repositionably attached to the first camshaft. A moving member control device in a spring manufacturing machine in which a second camshaft @(c) is configured to rotate in synchronization.