JPH10128484A - Spring manufacturing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the error of the diameter of the coil part of a spring by providing a bending die in the position away from the locking center of a rocking member. SOLUTION: The wire rod continuously sent out toward two bending dies 23 is struck on the bending dies 23 and bent, whereby the coil part of the spring is formed. The rocking member 21 is rocked around a pivot 22. The die 23 is provided in the position away from the rocking center 22 so as to be freely attachable and detachable via a holder in the lower end part of the rocking member 21. A projection 24 is provided in the lower end part of the rocking member 21. The projection 24 is fitted into the groove 26 of a block member 27 installed to a front wall 13 so as to be freely attachable and detachable. The bending die 23 is also provide in the tip end of an inclined slide 13. When the slide 13 is moved back and forth and the position of the bending die 23 is changed, a roll 43 and a rocking lever 42 are moved with the groove 41 of the slide 13, and a rocking lever 52 and the projection 24 are cooperated to move the rocking member 21 to a correct position.

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. That is, a machine frame having a vertical front wall, a wire processing space formed at the center of the front wall of the machine frame, and a wire fixed to the front wall for guiding the wire fed toward the wire processing space. A wire guide having a wire guide groove oriented vertically, at least a pair of wire feed rollers which are rotatably provided on a front wall below the wire guide and feed the wire while clamping the wire, and above the wire processing space. The center slide vertically movably provided on the front wall, and the center of the center slide in the vertical direction swings in a direction parallel to the front wall by a pivot axis whose axis is oriented in the front-back direction Swinging member, a roller provided at the upper end of the swinging member projecting above the center slide, and an inclined groove inclined in the left-right direction with respect to a vertical line in which the roller fits. Is formed Also known are a block member detachably provided on a front wall and a bending die detachably provided on a lower end of a swinging member projecting downward from a center slide (actual fairness 5). -3953). The spring making machine, by simply moving the center slide up and down, while moving the bending die up and down with it, swinging,
Since the bending die can be moved to a desired position, by changing the inclination angle of the inclined groove, the center slide can be moved by moving the center slide even though the moving direction of the center slide is constant. There is an advantage that the tip position can be easily changed.

[0003]

Disadvantages of the prior art The conventional spring making machine has the following disadvantages. That is, since the middle of the length of the swing member is provided at the center of the center slide in the vertical direction so as to swing in a direction parallel to the front wall by a pivot axis whose axis is directed in the front-rear direction, the swing The distance between the center and the tip of the bending die must be short, that is, the radius of the locus circle drawn by the tip of the bending die is small, and as a result, the direction of the bending die accompanying the swing of the swinging member can be changed. It is said that the position where the wire hits the wire of the bending die changes depending on the swinging position of the swing member, and an error easily occurs in the diameter of the coil portion formed by the wire being continuously hit and hit by the bending die. There were drawbacks.

[0004]

The present invention employs the following means to solve the above-mentioned drawbacks. According to the first aspect of the present invention, there is provided a machine frame having a vertical front wall, a wire processing space formed in a center portion of the front wall of the machine frame, and a front wall for guiding a wire fed out to the wire processing space. A wire guide fixed to the wire guide, at least one pair of wire feed rollers which are rotatably provided on the front wall on the opposite side of the wire guide space from the wire guide space and feed the wire while pressing the wire guide, and sandwich the wire guide space. And a center slide provided on the front wall so as to be able to advance and retreat with respect to the wire processing space, and an end of the center slide opposite to the wire processing space is parallel to the front wall by a pivot. A swinging member provided to swing in any direction, a bending die detachably provided at an end of the swinging member on the wire rod processing space side, and a swinging member on the wire rod processing space side On one of the end or front wall And force, formed on the other, those having a whole inclined groove fitting projections with inclined when viewed from the front with respect to the moving locus of the center of the slide.

[0005]

The first aspect of the present invention has the following functions. Bending dies are provided at positions farther from the center of swing of the swinging member than before, and the direction change of the bending dies due to swinging of the swinging member is small, so that the coil portion of the spring has higher accuracy. Can be manufactured.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In this description, “front” refers to the front side of FIG. 1, “back” 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 making machine 1 includes a machine frame 2 having a vertical front wall 3, a wire processing space 5 formed at the center of the front wall 3 of the machine frame 2, and a wire processing space 5. A wire guide 6 that guides the wire to be fed and is fixed to the front wall 3 and has a wire guide groove (not shown) directed vertically, and is provided rotatably on the front wall 3 below the wire guide 6. In addition, at least one pair, specifically, three pairs of wire feed rollers 7 that send out the wire while pinching it, and the wire processing space 5
A wire rod machining space is provided at a center slide 10 provided on a slide guide 9 fixed to the front wall 3 above and below, and a slide guide 12 provided on the left and right front walls 3 of the center slide 10. 5 and a slide guide 16 provided on the left and right portions of the front wall 3 and a left and right inclined slide 13 provided at a predetermined same acute angle with respect to the center slide 10. Left and right horizontal slides 17 are provided so as to be able to advance and retreat with respect to the wire rod processing space 5 and are perpendicular to the center slide 10.

As shown in FIGS. 5 and 6, a swinging member 21 is provided above the center slide 10 (on the side opposite to the wire rod processing space 5). The swinging member 21 is provided so as to swing in a direction parallel to the front wall 3, and a bending die 23 is detachably provided at a lower end portion (an end portion on the wire rod processing space 5 side) of the swinging member 21 via a holder. A roller 24 whose axial center is directed in the front-rear direction at the lower end of the swing member 21 protruding below the central slide 10 (the end protruding from the central slide 10 toward the wire rod processing space 5). A block member 27 having an inclined groove 26 inclined in the left-right direction with respect to the vertical line, into which the roller 24 fits, is attached to and detached from the front wall 3 by bolts (not shown). Freely provided That. The center slide 10 is urged by a spring 29 in a direction away from the wire rod processing space 5. A groove 3 extending in the left-right direction is provided at a lower portion of the swinging member 21.
0 (see FIG. 5), and a projection 31 formed in the groove 30 at the lower part of the center slide 10 allows the swing member 21 to swing in a direction parallel to the front wall 3. The swing member 21 is fitted so as to regulate the forward and backward movement. With such a configuration, the center slide 10
The rocking member 21 (the bending die 2)
3) swings in a direction parallel to the front wall 3.

As shown in FIGS. 2 to 4, the left inclined slide 13 can be moved forward and backward with respect to the wire rod processing space 5 by a slide operating device 34. The slide operating device 34 includes a ball screw 35 rotatably provided on the machine frame 2, a female screw mechanism (not shown) provided on the inclined slide 13 side with which the ball screw 35 is screwed, and a ball screw 35. Motor 37 that can rotate forward and reverse
And

As shown in FIGS. 2 to 4, the left inclined slide 13 and the center slide 10 are operated in conjunction with each other via a power transmission mechanism 40 described in detail below. On the upper surface of the inclined slide 13, a groove 41 orthogonal to the moving direction of the inclined slide 13 is formed. In this groove 41, a roller 43 is rotatably provided on an axial center provided at a free end of a swing lever 42 in a front-rear direction. The groove 41 is fitted without play in the width direction, and the base of the swing lever 42 is fixed to a rotating shaft 44 whose axis is oriented in the front-rear direction.
Is rotatably provided on a casing 46 fixed to the front wall 3. A gear 47 is detachably fitted to a rear end of the rotary shaft 44 that penetrates a rear wall of the casing 46 and is exposed to an opening formed in the front wall 3 so that power transmission can be easily cut off. A fan gear 48 is meshed with the gear 47, and the base of the fan gear 48 is fixed to a rotating shaft 51 whose axis is oriented in the front-rear direction. A swing lever 52 is fixed to the shaft 51, and a roller 53 having an axial center in the front-rear direction is provided at a free end of the swing lever 52 that is located above the center slide 10 through the opening of the casing 46. The roller 53 is rotatably provided, and the roller 53 abuts on the upper end of the center slide 10 urged upward by the spring 29. With such a configuration, when the left inclined slide 13 moves in a direction away from the wire processing space 5, the center slide 10 also moves in a direction away from the wire processing space 5 in conjunction with the movement. A bending die 23 is detachably attached to an end of the left inclined slide 13 on the wire processing space 5 side.

The right tilt slide 13 has a slide actuator 34 having the same structure as the slide actuator 34.
Thereby, it can be moved forward and backward with respect to the wire rod processing space 5. The right inclined slide 13 can be operated in conjunction with the central slide 10 by a power transmission mechanism 40 having the same structure as the power transmission mechanism 40.
Note that the drawing shows a state in which the right tilt slide 13 is not used. Therefore, the gear 47 is removed from the rotary shaft 44 to cut off power transmission, and the right swing lever 52 is It is held in a retracted state so as not to hinder vertical movement.

As shown in FIG. 1, the horizontal slide 17 on the left side is movable forward and backward with respect to the wire rod processing space 5 by a slide actuator 55 described in detail below. A connecting pin 56 whose axis is oriented in the front-rear direction on the horizontal slide 17.
One end of the connecting rod 57 is connected by a connecting pin 57, and the other end of the connecting rod 57 is
Is connected to the swing lever 59 by the swing lever 5.
The middle of the length 9 is swingably provided on the front wall 3 by a pivot 60 whose axis is directed in the front-rear direction, and the swing lever 59 is swingable by a crank mechanism (not shown) having a motor or the like. Has been made. The swing lever 59
Are covered by a cover 62 attached to the front wall 3. With such a configuration, the left horizontal slide 17 can be moved forward and backward with respect to the wire rod processing space 5 by swinging the swing lever 59. A cutter 61 is detachably provided at an end of the left horizontal slide 17 on the wire processing space 5 side.

The right horizontal slide 17 also has a slide actuator 55 having the same structure as the slide actuator 55.
Thereby, it can be moved forward and backward with respect to the wire processing space 5. In the drawing, the right horizontal slide 17 is not used.

As is well known, the coil portion (the right-handed coil portion) of the spring is formed by the wire continuously fed toward the two bending dies 23 being continuously bent against the bending dies 23. . The diameter of the coil portion of the spring is determined according to the positions of the two bending dies 23. Further, the taper coil portion is formed by moving the center slide 10 and the inclined slide 13 with respect to the wire processing space 5 during the formation of the coil portion. The cutting of the wire is performed by cutting the stopped wire by the cutter 61.

When manufacturing a spring having a left-handed coil portion, the gear 47 of the right power transmission mechanism 40 is fitted on the rotating shaft 44, and conversely, the gear 47 of the left power transmission mechanism 40 is fitted.
1 may be removed from the rotating shaft 44 to change the left and right sides from the state of FIG.

[0016]

[Modifications and the like] Modifications and the like will be described below. (1) The structure of the power transmission mechanism 40 is arbitrary. (2) The inclined groove 26 may be formed on the swing member 21 side, and the roller 24 may be provided on the block member 27. Note that the roller 24 may be replaced with a simple projection. (3) In claim 2 of the claims, "the structure in which the power transmission mechanism can easily cut off the power transmission" means:
It means that one of the members constituting the power transmission mechanism can be easily removed. That is, instead of the gear 47, the sector gear 4
8. The swing lever 42 and the like may be easily detached. (4) The front wall 3 of the illustrated spring manufacturing machine 1 is
The spring manufacturing machine of the present invention also includes a spring manufacturing machine in a state in which is rotated 90 degrees right or left around a virtual center line passing through in the front-rear direction. That is, a spring manufacturing machine that sends out a wire from the left to the wire processing space 5 and a spring manufacturing machine that sends out a wire from the right to the wire processing space 5 are naturally included in the spring manufacturing machine of the present invention. (5) In this specification, the same predetermined acute angle includes substantially the same. Also, the right angle includes almost the same.

[0017]

According to the present invention, the following effects can be obtained by the above-described configuration. According to the first aspect of the present invention, since the bending dice is provided at a position farther from the center of the swing of the swing member than in the related art, the direction of the bending die accompanying the swing of the swing member is less changed. And the coil portion of the spring can be manufactured with higher accuracy. According to the second aspect of the present invention, the position of one of the bending dies out of the bending dies attached to each of the center slide and one of the inclined slides is determined by operating the central slide and the one inclined slide in an interlocked manner via the power transmission mechanism. This makes it possible to automatically position the other bending die at a set position corresponding to the position of the bending die without any trouble. Also, when manufacturing a spring having a right-handed coil portion, also when manufacturing a spring having a left-handed coil portion,
Since a simple operation such as replacement of the block member, replacement of the bending die, replacement of the inclined slide to be used, and adjustment of the switching of the power transmission mechanism accompanying it may be performed, the spring having the right-handed coil portion and the left-handed coil portion may be used. Any of the springs can be easily manufactured.

[Brief description of the drawings]

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

FIG. 2 is an enlarged view of a portion A in FIG.

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 2;

FIG. 5 is a sectional view taken along line VV of FIG. 2;

FIG. 6 is an end view taken along line VV of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Spring manufacturing machine 2 Machine frame 3 Front wall 5 Wire processing space 6 Wire guide 7 Wire feed roller 10 Center slide 21 Swing member 22 Axis 23 Bending dice 24 Roller (projection) 26 Inclined groove 27 Block member

Claims (2)

[Claims] 1. A machine frame having a vertical front wall, a wire processing space formed in the center of the front wall of the machine frame, and fixed to the front wall for guiding a wire fed out to the wire processing space. A wire guide, at least one pair of wire feed rollers that are rotatably provided on the front wall on the opposite side of the wire processing space from the wire guide and that feed the wire while pressing the wire, and a wire that sandwiches the wire processing space. A central slide opposed to the guide and provided on the front wall so as to be able to advance and retreat with respect to the wire rod processing space, and a direction in which the end of the central slide is opposite to the wire rod processing space by a pivot axis and is parallel to the front wall. A swing member provided so as to swing, and a bending die detachably provided at an end of the swing member on the wire rod processing space side;
A projection provided on one of an end portion or a front wall of the rocking member on the wire rod processing space side and a projection formed on the other side are inclined with respect to a movement trajectory of a central slide as viewed from the front and fitted. A spring making machine having a completely inclined groove. 2. A pair of inclined slides are provided on front wall portions on both sides of the center slide so as to form a predetermined same acute angle with respect to the center slide so as to be able to advance and retreat with respect to a wire rod processing space. Each of the inclined slides can be operated in conjunction with a central slide via a power transmission mechanism, and the power transmission mechanism has a structure that can easily cut off power transmission, and the inclined groove Is formed on a block member, and the block member is detachably provided on an end of the front wall or the swinging member on the wire rod processing space side, and a projection is provided on a member to which the block member is not attached. The spring manufacturing machine according to claim 1.