JP2501265Y2 - Tool operating device for spring making machine - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for operating a tool such as a bending die in a spring manufacturing machine.

[0002]

2. Description of the Related Art Conventionally, the following spring manufacturing machines are known as this kind of spring manufacturing machine. That is, as shown in FIG. 7, the wire rod feeding device 42 that sequentially feeds the wire rod 44 toward the wire rod processing space 45 from below, and the wire rod 44 that has been fed to the wire rod processing space 45 are brought into contact with each other and spirally formed as a two-dot chain line Bending die 43 for continuously forming the spring body portion in the direction perpendicular to the paper surface of FIG. 7, and the spring body portion formed so as to be radially movable around the wire rod processing space 45. Predetermined processing in the radial direction (bending, cutting, etc.)
Is a spring-making machine having various forming tools 46 for adding. Among them, the bending die 43 can be retracted from the wire processing space 45 by swinging because the wire 44 may have a non-spiral portion. As a structure for this swinging, as in the one disclosed in Japanese Utility Model Laid-Open No. 63-202441 shown in FIG. 8, the rotary shafts 1a and 2a are moved forward and backward (the front side is the front side in FIG. 8 and the rear side is the back side). Two rotary cams 1 and 2 that rotate in opposite directions synchronously with each other, and either one of these rotary cams 1 and 2 and a cam follower 4 selectively.
A swing shaft 48a, which is configured to be capable of swinging left and right (left means the left side in FIG. 8 and right means the right side in FIG. 8) by abutting 9, 50.
Of the drive side swing lever 48, and a follower of the swing side shaft 53a, which is swingable to the left and right via sector gears 51 and 52 on the lower side of the drive side swing lever 48. Side swing lever 53, and the bending die 43 is attached to the lower end of the driven side swing lever 53.
Was being prepared.

[0003]

The purpose of this invention is to diversify the spring shape of the spring to be manufactured, and in some cases, it is desired to perform processing with various forming tools in the axial direction of the spring body portion. , It is possible to convert the swinging motion of the bending die into a direction orthogonal to the conventional one.
We made it easy to use existing spring manufacturing machines.
An object is to provide a tool operating device for a spring making machine.

[0004]

[Means for Solving the Disadvantages] This invention adopts the following means in order to solve the above disadvantages. That is, at the lower part of the drive-side swing lever, there is provided a driven-side swing lever having the swing shaft with the wire rod machining tool at the lower end thereof directed to the left and right, and the lower end of the drive-side swing lever. In the department,
A cam block having a series of cam grooves in which the left end portion and the right end portion are deviated in the front and rear direction is provided downward, and the upper end portion of the driven side swing lever is fitted in the cam groove of the cam block. The round slide is installed upwards.

[0005]

The function of the present invention is as follows. When the drive-side swing lever with the swing shaft facing forward and backward swings by the rotation of the rotary cam so that the upper end portion and the lower end portion thereof face left and right, the drive-side swing lever is provided at the lower end portion. With respect to the cam block, the slider of the driven swing lever can be moved back and forth along the cam groove. Therefore, the driven side swing lever with the swing shaft facing left and right swings so that the upper end portion holding the above-mentioned slider faces forward and backward, and the tool provided at the lower end portion of You will swing back and forth.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings. In this specification, the front means the front side of FIG. 1, the rear means the back side, the left means the left side of FIG. 1, and the right means the right side of FIG. As shown in FIG. 1, the rotary shafts 1a and 2a
To the front and back, the two rotary cams 1 and 2 synchronously rotating in opposite directions and the cam followers 5 and 6 are selectively brought into contact with these rotary cams 1 and 2, respectively, so that the front and rear can be moved. It has a drive-side swing lever 3 whose upper and lower ends are swingable in the left-right direction about a swing shaft 4, and the lower end of the drive-side swing lever 3 has a predetermined length. The structure for taking out the swinging pattern is substantially the same as that of the spring manufacturing machine (see FIG. 8) described above.

A driven side swing lever 15 is provided below the drive side swing lever 3. The driven-side swing lever 15 includes a shaft support 17 provided on both left and right sides thereof,
A swing shaft 16 which is held horizontally across 18 (see FIG. 3) is swingable so that its upper end portion and lower end portion are oriented forward and backward. The bending die 43 is attached to the lower end of the driven-side swing lever 15.
A tool 40 such as (see FIG. 7) can be attached.

A cam block 10 is provided at the lower end of the drive-side swing lever 3. As shown in FIG. 2, the cam block 10 has a cam groove 11 that opens downward. As shown in FIG. 4, the cam groove 11 is slanted so that the left end portion and the right end portion are displaced forward and backward. Is formed in. On the other hand, as shown in FIGS. 1 and 2, a slider 19 is provided at the upper end of the driven side swing lever 15 so as to be fitted into the cam groove 11 of the cam block 10 described above. As the slider 19, a cam follower is used with its rotation axis oriented vertically. Therefore, when the drive-side swing lever 3 swings so that its upper end portion and lower end portion are directed to the left and right as the rotary cams 1 and 2 rotate, the drive side swing lever 3 slides in the cam groove 11 of the cam block 10. The child 19 changes its sliding direction by 90 ° and can be moved back and forth. Therefore, the driven side swing lever 15 swings so that the upper end portion and the lower end portion thereof face forward and backward, and the tool 40 swings forward and backward. It should be noted that, as shown in FIG. 2, the slider 19 has a centering shaft 36 provided in parallel with the swing shaft 16 of the driven side swing lever 15 so that the slider 19 can swing back and forth. It is held via the swing block 37. Therefore, even when the driven-side swing lever 15 swings, the rotation axis of the slider 19 is automatically oriented in the vertical direction.
The state in which the inner side wall is in perfect contact with the side wall is always maintained.

As shown in FIGS. 5 and 6, a slider 31 is provided downward on the lower end of the drive side swing lever 3 via a swing plate 7 and a holding block 34, which will be described later, and a driven side swing is performed. The cam block 32 is attached to the upper end of the lever 15.
And the cam groove 33 of the cam block 32 is provided.
Even when the slider 31 is fitted inside, the same effect as above can be obtained. In this case, the slider 31 has a spherical shape that does not rotate, and the cam block 32 has the cam groove 33 formed along the cylindrical surface in the recess direction. Such a combination of the slider 19 and the cam block 10 (see FIGS. 1, 2 and 4)
Or a combination of the slider 31 and the cam block 32 (see FIG. 5).
In addition to the above structure, a so-called ball screw-like structure having a combination structure of a worm gear and a gear meshing with the worm gear (preferably a large number of small steel balls rolling along the lead surface of the worm gear) was provided. It is also possible to substitute the one).

By the way, as shown in FIGS. 1 and 2, on the front surface of the driving side swing lever 3, a boss portion 4a protruding around the swing shaft 4 is fitted, and its upper portion is fixed by a bolt 9. A plate 7 is attached so that the left and right positions can be finely adjusted. The cam block 10 is positioned on the lower end of the drive-side swing lever 3 via the swing plate 7. The deflection plate 7 has a stopper portion 8 which projects downwardly in an inverted trapezoidal shape. On the other hand, in the driven side swing lever 15, a swing range restricting plate 20 is attached so as to cover the front surface portions of the shaft supports 17 and 18 (see FIG. 3). A notch 21 that allows the stopper portion 8 of the swing plate 7 to swing to the left and right within a predetermined range is formed on the upper side portion of the swing range regulating plate 20. Therefore, the maximum swing range of the drive side swing lever 3 is restricted by this. A spring 35 is provided on the back surface of the rocking range regulating plate 20 near the lower side of the rocking range regulating plate 20 in front of and behind the driven rocking lever 15. The loss is prevented when the swinging force is transmitted to the lever 15. Further, as shown in FIG. 1, the driving side swing lever 3
A spring strut 12 is attached to the upper end of the spring strut 12, and a spring strut 13 is also attached to the swinging range regulating plate 20 of the driven swing lever 15 in the same manner.
A spring 14 is stretched over between 2 and 13. Therefore, the stopped state when the drive-side swing lever 3 reaches the left or right swing range is maintained.

As shown in FIG. 2, the oscillating shaft 4 of the drive side oscillating lever 3 and the oscillating plate 17 of the oscillating pedestals 17 and 18 for holding the oscillating shaft 16 of the driven oscillating lever 15 are Both
It is fixed to a vertically long slide table 25. The slide base 25 is fitted in a guide member 26 having a vertically long groove-shaped recess, which is attached to the front plate 24 of the spring manufacturing machine, and is held so as to be vertically movable. A spring 28 is loaded in the guide member 26 between the spring receiver 27 protruding forward and the inner upper surface of the slide base 25, and by the elastic force of the spring 28,
The slide base 25 is pushed up and biased. In such a slide base 25, the link mechanism 30 is appropriately moved from the state where the upper end of the slide base 25 contacts the upper limit stopper 29.
It becomes possible to slide downward by receiving the pushing force of the spring, which gradually reduces the diameter of the spring being manufactured and swirls it, and vice versa. You can make it swirl.

[0012]

Next, the operation of the embodiment apparatus will be described.
As described above, when the drive-side swing lever 3 swings left and right as the rotary cams 1 and 2 rotate, the driven-side swing lever 1
5 swings back and forth, and the tool 40 also swings back and forth. As for the case where the tool 40 is the bending die 43, when the wire rod 44 delivered to the wire rod processing space 45 at the lower side of FIG. 1 comes into contact with the bending die 43, the spring body portion to be formed is Figure 1 shows the axial direction
Will be horizontally oriented to the right or left.
Therefore, various forming tools 46 radially arranged around the wire rod processing space 45 as shown in FIG. 7 can be used for the processing in the axial direction of the spring body portion. By the way, in order to cause the tool 40 to swing back and forth as described above, it is not necessary to purposely manufacture a new spring manufacturing machine, and a conventional spring manufacturing machine as shown in FIG. It is only necessary to replace a few parts. That is, from the state shown in FIG.
The driven side swing lever 53 is removed together with the swing shaft 53a, and the drive side swing lever 48 is removed from the swing shaft 48a. Then, the drive side swing lever 3 including the swing plate 7 and the cam block 10 as shown in FIG. 1 is attached to the swing shaft 48a. When the drive-side swing lever 48 has a structure in which the swing plate 7 and the cam block 10 can be attached, the drive-side swing lever 4 is purposely driven.
It is not necessary to replace 8 with (3). Next, in the rear portion where the driven side swing lever 53 is removed, the shaft support plate 2
2, the shaft supports 17 and 18, the swing shaft 16, the driven side swing lever 15, and the swing range regulating plate 20 are attached so as to obtain a predetermined mutual association, and finally, the swing range regulating plate. Two
The spring 14 may be stretched between the spring support 13 of 0 and the spring support 12 of the drive-side swing lever 3 or 48. The tool 40 provided at the lower end of the driven-side swing lever 15 may be not only the bending die 43 but also various forming tools and cutting tools.

[0013]

[Effects of the Invention] This invention has the following structure.
The following effects are achieved. Since it is possible to easily use the tool in such a manner that the swinging motions of the tools are orthogonal to each other, it is possible to easily manufacture the existing spring manufacturing machine by exchanging a few parts. The spring shape of the spring can be diversified.

[Brief description of drawings]

FIG. 1 is a front view showing a spring manufacturing machine according to the present invention.

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

FIG. 3 is an enlarged sectional view taken along line III-III of FIG. 1;

FIG. 4 is an enlarged view taken along the line IV-IV of FIG.

FIG. 5 is an enlarged front sectional view showing a main part in an embodiment of another mode.

FIG. 6 is a view taken along line VI-VI in FIG. 5;

FIG. 7 is a diagram showing the principle of a spring manufacturing machine.

FIG. 8 is a front view showing a conventional spring manufacturing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 rotary cam 1a rotary shaft 2 rotary cam 2a rotary shaft 3 drive side rocking lever 4 its rocking shaft 5 cam follower 6 cam follower 10 cam block 11 cam groove 15 driven rocking lever 16 its rocking shaft 19 slider 40 tool

Claims (2)

(57) [Scope of utility model registration request] 1. A drive-side swing lever having at least one rotary cam having a rotary shaft directed forward and backward, and a swing shaft which is made swingable by bringing a cam follower into contact with the rotary cam so as to move forward and backward. A tool operating device for use in a spring manufacturing machine, comprising: a drive-side swing lever for operating a wire rod machining tool in accordance with a swing pattern taken out by the drive-side swing lever. Is provided with a driven-side swing lever having a swing shaft with the wire rod processing tool at the lower end directed to the left and right. The lower end of the drive-side swing lever has a left end portion and a left end portion. A cam block having a series of cam grooves whose front end and right end are displaced downward is provided downward, and a slider fitted in the cam groove of the cam block is provided at the upper end of the driven side swing lever. Of the spring manufacturing machine with the Tool actuator. 2. At least one rotary cam having a rotary shaft directed forward and backward, and a drive-side swing lever having a swing shaft that is swingable by contacting a cam follower with the rotary cam so as to swing forward and backward. A tool operating device for use in a spring manufacturing machine, comprising: a drive-side swing lever for operating a wire rod machining tool in accordance with a swing pattern taken out by the drive-side swing lever. In the lower part of the, a driven-side rocking lever having a rocking shaft having the wire rod processing tool at the lower end is directed to the left and right, and the upper end of the driven-side rocking lever has a left end portion and a left end portion. A cam block having a series of cam grooves whose front end and the right end are offset is provided upward, and a slider fitted in the cam groove of the cam block is provided at the lower end of the drive-side swing lever. Of the spring manufacturing machine with the Tool actuator.