JPH0584445U - Tool operating device for spring making machine - Google Patents

Abstract

(57) [Abstract] [Purpose] In a spring manufacturing machine, a tool 40 such as a bending die can be swung not only in the left-right direction but also in the front-back direction. To diversify the spring shape that can be manufactured. [Structure] With respect to a drive-side swing lever 3 that swings the upper end portion and the lower end portion in the left-right direction about a swing shaft 4 that faces the front-rear direction, swings the lower end portion in the left-right direction in the front-rear direction. Cam block 10 and cam follower 1 which are converted to swing
9, the driven swing lever 15 that is swingable about the swing shaft 16 facing left and right is swung by the swinging force in the front-rear direction that is taken out. Then, the tool 40 is provided at the lower end of the driven-side swing lever 16.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for operating a tool such as a bending die in a spring manufacturing machine.

[0002]

[Conventional spring making machine]

 Conventionally, the following types of spring manufacturing machines are known. 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 to form a two-dot chain line. Bending die 43 that forms a spring body continuously in a direction perpendicular to the paper surface of FIG. 7 while forming a spiral shape, and a spring formed so as to be capable of advancing and retracting so as to be radially around the wire rod processing space 45. This is a spring manufacturing machine having various forming tools 46 that perform predetermined processing (bending, cutting, etc.) in the radial direction of the body portion. Among them, the bending die 43 can be swung and retracted from the wire processing space 45 because the wire 44 may have a non-spiral portion. As for the structure for this swinging, the rotary shafts 1a and 2a are arranged in the front and rear (the front is the front side of FIG. 8 and the rear is the same as the one described in Japanese Utility Model Laid-Open No. 63-202441 shown in FIG. Two rotary cams 1 and 2 which rotate in opposite directions synchronously with each other, and one of the rotary cams 1 and 2 is selectively brought into contact with a cam follower 49, 50. A drive-side swing lever 48 with a swing shaft 48a facing forward and backward, which is swingable to the left and right (left means the left side in FIG. 8 and right means the right side in FIG. 8), and this drive-side swing lever. The driven side swing lever 53, which is swingable to the left and right through the sector gears 51 and 52 on the lower side of 48, has a swing shaft 53a facing forward and backward. The bending die 43 was provided at the lower end of the lever 53.

[0003]

[The purpose of the device]

 In this invention, in order to diversify the spring shape of the spring to be manufactured, there are cases where it is desired to perform processing with various forming tools in the axial direction of the spring body part. An object of the present invention is to provide a tool actuating device for a spring manufacturing machine, which makes it possible to easily change the swinging motion in a direction orthogonal to that of a conventional one even in an existing spring manufacturing machine. To do.

[0004]

[Means for solving the above-mentioned drawbacks]

 This invention adopts the following means in order to solve the above-mentioned drawbacks. That is, at the lower part of the drive-side swing lever, there is provided a driven-side swing lever which has the wire rod processing tool at its lower end and whose swing axis is directed to the left and right. A cam block having a series of cam grooves in which the left end portion and the right end portion are displaced forward and backward is provided downward at the lower end portion, and the upper end portion of the driven side swing lever is provided at the upper end portion of the cam block. The slider that fits in the cam groove is provided upward.

[0005]

[Function of the device]

 This device has the following actions. 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 side 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 is the same. You will have to swing back and forth.

[0006]

【Example】

 The present invention will be described below based on an embodiment 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, with the rotary shafts 1a and 2a facing forward and backward, two rotary cams 1 and 2 that rotate synchronously in opposite directions, and cam followers 5 and 6 are selectively attached to these rotary cams 1 and 2. And a drive-side swing lever 3 whose upper and lower end portions are swingable in the left-right direction about a swing shaft 4 oriented in the front-rear direction. The structure for extracting a predetermined swing pattern on the lower end side of the drive side swing lever 3 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 has a swing shaft 16 held horizontally between shaft supports 17 and 18 (see FIG. 3) provided on the left and right sides of the driven swing lever 15 as a center, and an upper end portion and a lower end thereof. It is swingable so that the parts are turned back and forth. Then, a tool 40 such as a bending die 43 (see FIG. 7) is attached to the lower end of the driven side swing lever 15.

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 in the cam groove 11 of the cam block 10 so as to face upward. Has been. 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 the upper end portion and the lower end portion thereof 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 its upper end portion and lower end portion are directed forward and backward, and the tool 40 is swung back and forth. As shown in FIG. 2, the slider 19 can be swung back and forth with respect to the driven side swing lever 15 by an aligning shaft 36 provided so as to be parallel to the swing shaft 16. 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, and the rotation peripheral surface of the slider 19 has a cam groove. The state in which the side wall inside 11 is in perfect contact is always maintained.

As shown in FIGS. 5 and 6, a slider 31 is provided downward on the lower end portion of the driving side swing lever 3 via a swing plate 7 and a holding block 34, which will be described later, and the driven side swing lever 3 is provided. Even when the cam block 32 is provided on the upper end of the moving lever 15 and the slider 31 is fitted in the cam groove 33 of the cam block 32, the same effect as above can be obtained. In this case, a spherical ball that does not rotate is used as the slider 31, and a cam block 32 in which the cam groove 33 is formed along a cylindrical surface in the recess direction is used. In addition to such a combination of the slider 19 and the cam block 10 (see FIGS. 1, 2 and 4) and a combination of the slider 31 and the cam block 32 (see FIGS. 5 and 6), a worm gear and It is also possible to replace it with a structure that combines with a gear that meshes with it (preferably a structure having a so-called ball screw, in which a large number of small steel balls roll along the lead surface of the worm gear). is there.

By the way, as shown in FIGS. 1 and 2, on the front surface of the drive-side swing lever 3, a boss portion 4 a protruding around the swing shaft 4 is fitted, and an upper portion thereof 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 described above is positioned to 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 downward in a 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 surfaces 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 regulated by this. A spring 35 is provided on the back surface of the swinging region regulating plate 20 near the lower side of the swinging side regulating plate 20. The spring 35 is provided in front of and behind the driven side swinging lever 15. The loss is prevented from being generated when the swinging force is transmitted to the lever 15. Further, as shown in FIG. 1, a spring support 12 is attached to the upper end of the drive-side swing lever 3, and a spring support 13 is similarly attached to the swing-range restricting plate 20 of the driven-side swing lever 15. The spring struts 12 and 13 are attached to each other, and the spring 14 is stretched over the spring struts 12 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 swing shaft 4 of the driving side swing lever 3 and the shaft abutment plate 22 of the shaft abutments 17 and 18 holding the swing shaft 16 of the driven side swing lever 15 are Both are 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 vertically movable. A spring 28 is loaded in the guide member 26 between a spring receiver 27 projecting forward and an inner upper surface of the slide base 25. The elastic force of the spring 28 pushes up the slide base 25. It is supposed to be urged. Such a slide base 25 can be slid downward from the state in which the upper end portion thereof is in contact with the upper limit stopper 29 by being appropriately pressed by the link mechanism 30 to be slid downward. It is possible to gradually reduce the diameter of a certain spring to make it swirl, and the opposite operation to gradually make the diameter of the spring larger.

[0012]

[Operation of the embodiment]

 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 15 swings back and forth, and the tool 40 swings back and forth. It is something to do. 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 bottom of FIG. 1 comes into contact with the bending die 43, the formed spring body portion is The axial direction is horizontally oriented to the right or left in FIG. Therefore, various forming tools 46 radially arranged around the wire rod processing space 45 as shown in FIG. 7 can be used for 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 in this way, it is not necessary to make a new spring manufacturing machine, but the conventional spring manufacturing machine shown in FIG. , It is only necessary to replace a few parts. That is, from the state shown in FIG. 8, first, 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. If the drive-side rocking lever 48 has a structure in which the swing plate 7 and the cam block 10 can be attached, it is not necessary to replace the drive-side rocking lever 48 with (3). Next, the shaft supporting plate 22, the shaft supporting plates 17 and 18, the rocking shaft 16, the driven rocking lever 15, and the rocking range restricting plate 20 are attached to the rear part of the driven rocking lever 53. , So as to obtain a predetermined mutual relation, and finally, a spring 14 is applied between the spring support 13 of the rocking range regulating plate 20 and the spring support 12 of the drive side rocking lever 3 or 48. You can give it to them. The tool 40 provided on 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]

[Effect of the device]

 The present invention has the following effects due to the above configuration. Since it is possible to use the tool in such a manner that the swinging motions of the tools are made orthogonal, it is possible to easily use the existing spring making machine by exchanging a few parts. The spring shape that can be formed 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.

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

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

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

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

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 swing lever 4 its swing shaft 5 cam follower 6 cam follower 10 cam block 11 cam groove 15 driven swing lever 16 its swing shaft 19 slider 40 tool

Claims (2)

[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. And a tool operating device for use in a spring manufacturing machine, wherein the tool for wire processing is operated 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 having the wire rod processing tool at the lower end thereof in the left and right directions. The lower end portion 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 the right end are offset 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 bringing a cam follower into contact with the rotary cam so as to swing forward and backward. And a tool operating device for use in a spring manufacturing machine, wherein the tool for wire processing is operated 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 equipped with the wire rod machining 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 displaced upward and downward is provided, 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.