Spring forming device and production method

Abstract

The present invention relates to a spring forming device, comprising a bracket, a clamping device, a first separating device, and a second separating device. The first separating device and the second separating device are arranged on the bracket. The clamping device can be connected to the bracket via a movable arm. The first separating device and the second separating device have the same structure and are symmetrically arranged on both sides of the clamping device. They both include a wedge block and a support block. The support block is provided with a tip with a groove. The wedge of the wedge block and the groove of the support block are opposite. The clamping device includes a base and two long arms. The tips of the wedge block and the support block can approach and move away from each other. The wedge block, the support block, the base of the clamping device, and the long arm can all be connected to the movable arm of the spring machine and driven by the movable arm. The present invention also discloses a method for producing double-ear springs using the aforementioned forming device. The present invention has a simple structure, high production efficiency, flexible use, and low cost.

Description

Technical Field

[0001] The invention relates to a spring machine component, in particular to a spring forming device and a production method. Background Art

[0002] Spring machines are mechanical equipment that bend elastic wire into springs. They include special machines that specialize in producing a specific type of spring and universal machines that can produce a variety of springs.

[0003] Common universal machines (such as Figure 1 The spring spring machine (shown in FIG. 1 ) comprises a back plate a1, and several movable arms a2 (usually eight) detachably arranged on the back plate a1. The movable arms a2 are provided with servo motors a3 and cutters. Under the control of a programmable industrial computer, the elastic wire is pushed out from a small hole a4 in the center of the back plate. The servo motor a3 drives a variety of cutters to approach the elastic wire, and the elastic wire is deformed by extrusion and other means, and then the formed spring is cut off. The continuous production of springs can be realized by the cooperation of a variety of cutters. The production control of different types of springs can be realized by programming the industrial computer.

[0004] Figure 2 The diagram is a comparison of the middle ear spring (upper left) and the conventional spring (lower right). The steps of producing a middle ear spring with a general universal machine include forming the first ear a5-forming the spring body a6-forming the second ear a7-cutting. The forming of the first ear, the forming of the spring body, the forming of the second ear and the cutting, as well as the process of producing the next spring, all require the switching of corresponding tools, which is very inefficient, with the production quantity of less than ten per minute. The special machine has a complex structure and is expensive, and the price can be several times that of the universal machine, which is costly. Summary of the invention

[0005] The purpose of the present invention is to improve and innovate the shortcomings and problems existing in the background technology and to provide a spring forming device with simple structure and low cost.

[0006] The technical solution of the present invention is to construct a spring forming device, including a bracket, a clamping device, a first separation device, and a second separation device. The first separation device and the second separation device are arranged on the bracket, and the clamping device can be connected to the bracket through a movable arm. The first separation device and the second separation device have the same structure and are symmetrically arranged on both sides of the clamping device, and both include a wedge block and a support block. The support block is provided with a tip with a groove, and the wedge of the wedge block and the groove of the support block are opposite. The clamping device includes a base and two long arms, one end of each long arm is axially connected to the base, and the side of the other end is provided with a relative clamping groove, and the two long arms can cooperate to clamp the spring in the clamping groove. The first separation device and the second separation device are both connected to the bracket through a connecting mechanism, and the tips of the wedge block and the support block can approach and move away from each other. The wedge block, the support block, the base of the clamping device, and the long arm can all be connected to the movable arm of the spring machine and driven by the movable arm.

[0007] In one embodiment, the connecting mechanism includes a first straight rail, a second straight rail, and an annular guide rail, the annular guide rail is vertically arranged, the wedge block and the support block are respectively connected to the first connecting rod and the second connecting rod, and are arranged at one end of the first connecting rod and the second connecting rod, the middle parts of the first connecting rod and the second connecting rod are connected to the support rod shaft in the annular guide rail, the support rod can rotate in the annular guide rail, the annular guide rail is slidably connected to the second straight rail, the second straight rail is slidably connected to the first straight rail, and the first straight rail is fixed on the bracket.

[0008] The positions of the rotation axes of the first connecting rod and the support rod are fixed relative to the support rod, a movable rotating axis is fixedly arranged in the middle of the second connecting rod, a slide groove is arranged on the support rod, the movable rotating axis is embedded in the slide groove, and a support spring connected to the movable rotating axis is arranged on the side of the slide groove away from the wedge block, an adjusting screw is arranged on a section of the second connecting rod away from the wedge block, and one end of the adjusting screw is against the annular guide rail.

[0009] In one embodiment, the other end of each connecting rod is rigidly or softly connected to a movable arm, and one end of the long arm of each clamping device away from the clamping slot is rigidly or softly connected to a movable arm.

[0010] In one of the embodiments, a flange is provided in the annular guide rail, and both ends of the support rod are fixed to the flange by bolts.

[0011] Another technical solution of the present invention is to construct a method for producing a spring, using the aforementioned middle ear spring forming device, comprising the following steps:

[0012] The spring machine curls the elastic wire to produce earless springs;

[0013] The two long arms move, the clamping grooves on the long arms cooperate to clamp the earless spring, and the spring machine cuts off the end of the earless spring;

[0014] The two long arms move to move the earless spring to be located between a wedge block and a support block at both ends;

[0015] The wedge block and the support block are brought close to each other, so that a section of one coil of the earless spring is embedded in the groove of the support block, and the tip of the wedge block is inserted between the corresponding two coils, and the two coils are separated at this point until the required angle is reached;

[0016] The wedge block and the support block move away from each other, and the two long arms separate to collect the formed double-ear spring.

[0017] Advantages and beneficial effects of the present invention: The device of the present invention forms ears by breaking the two ends of the earless spring apart, and finally forms a double-ear spring. The device can be installed on an existing universal spring machine. According to the characteristics that the movable arm of the existing spring machine is detachable and can be individually programmed and controlled, the clamping device, the first separation device, and the second separation device are programmed and controlled by the movable arm to cooperate with the earless spring forming process. While the ear of the formed earless spring is being bent, the next earless spring can be formed to achieve continuous production. Compared with the traditional steps of forming the first ear-forming the spring body-forming the second ear-cutting, it is equivalent to saving the steps of forming the first ear and the second ear. Since the conversion steps of the conventional universal machine require switching the tool, and the time spent on switching the tool accounts for a large proportion of the overall spring production (the steps of the middle ear spring are particularly complicated, and more tools need to be switched compared to the side ear spring), the present invention also saves a lot of time for switching the tool, greatly improving the production efficiency of the double-ear spring. In addition, it only costs several thousand yuan to add the device of the present invention to the existing universal machine, and the device is detachable and flexible to use. Compared with the special-purpose machine which costs hundreds of thousands of yuan, it can greatly reduce the equipment purchase cost of the production enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the existing universal machine.

[0019] Figure 2 It is a schematic diagram comparing the structures of the middle ear spring and the earless spring.

[0020] Figure 3 It is a three-dimensional schematic diagram of the application state of the embodiment.

[0021] Figure 4 yes Figure 3 Right view of .

[0022] Figure 5 yes Figure 3 main view.

[0023] Figure 6 It is a schematic diagram of the overall structure of the embodiment, that is, Figure 3 Enlarged view of the X part.

[0024] Figure 7 Schematic diagram of the structure of the first separation mechanism in the embodiment.

[0025] Figure 8 It is the AA section view of section 7.

[0026] Fig. 9 Schematic diagram of the structure of the clamping device in the embodiment.

[0027] Fig.10 Schematic diagram of the middle ear spring forming process in the embodiment.

[0028] Fig.11 It is a schematic diagram of the forming process of the edge ear spring. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0030] It should be noted that when an element is considered to be “disposed on” another element, it may be directly disposed on or connected to the other element or there may be an intermediate element at the same time.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification are only for describing specific implementation purposes and are not intended to limit the present invention.

[0032] Example 1

[0033] like Figure 3-9 As shown, a spring forming device X can be installed in front of a spring machine Y, including a bracket 1, a clamping device 2, a first separation device 3, and a second separation device 4. The first separation device 3 and the second separation device 4 are arranged on the bracket 1, and the clamping device 2 can be connected to the bracket 1 through a movable arm a2. The first separation device 3 and the second separation device 4 have the same structure and are symmetrically arranged on both sides of the clamping device 2. They both include a wedge block 5 and a support block 6. The support block 6 is provided with a tip with a groove 7. The wedge of the wedge block 5 and the groove 7 of the support block 6 are opposite and staggered by a certain distance. Fig. 9As shown, the clamping device 2 includes a base 8 and two long arms 9, one end of each long arm 9 is axially connected to the base 8, and a relative clamping groove 10 is arranged on the side of the other end. The two long arms 9 can cooperate to clamp the spring in the clamping groove 10. The first separation device 3 and the second separation device 4 are connected to the bracket 1 through a connecting mechanism, and the tips of the wedge block 5 and the support block 6 can approach and move away from each other. The wedge block 5, the support block 6, the base 8 and the long arms 9 of the clamping device 2 are all connected to the moving arm a2 of the spring machine Y and are driven by the moving arm a2.

[0034] Specifically, the connecting mechanism includes a first straight rail 12, a second straight rail 13, and an annular guide rail 14. Figure 7 As shown, the annular guide rail 14 is vertically arranged, the wedge block 5 and the support block 6 are respectively connected to the first connecting rod 15 and the second connecting rod 20, and are respectively arranged at one end of the first connecting rod 15 and the second connecting rod 20, and the middle parts of the first connecting rod 15 and the second connecting rod 20 are both axially connected to the support rod 16 in the annular guide rail 14, wherein: Fig.10 As shown, the positions of the rotation axis 21 of the first connecting rod 15 and the support rod 16 are fixed relative to the support rod 16, and a movable rotation axis 22 is fixedly arranged in the middle of the second connecting rod 20, and a slide groove 23 is arranged on the support rod 16, and the movable rotation axis 22 is embedded in the slide groove 23, and a support spring 24 connected to the movable rotation axis 22 is arranged on the side of the slide groove 23 away from the wedge block 5, and an adjusting screw 25 is arranged on a section of the second connecting rod 20 away from the wedge block 5, and one end of the adjusting screw 25 abuts against the annular guide rail 14. The adjusting screw 25 is used to limit the wedge block 5.

[0035] The support rod 16 can rotate in the annular guide rail 14, the annular guide rail 14 is slidably connected to the second straight rail 13, the second straight rail 13 is slidably connected to the first straight rail 12, and the first straight rail 12 is fixed on the bracket 1. Obviously, the connection between the first straight rail 12 and the second straight rail 13, and between the second straight rail 13 and the annular guide rail 14 should be controllable by the locking structure.

[0036] The other end of each connecting rod 15 is hard-connected or soft-connected to a moving arm a2, and the end of each long arm 9 of the clamping device 2 away from the clamping groove 10 is hard-connected or soft-connected to a moving arm a2. The hard connection can be a fixed connection through a rigid bar, and the soft connection can be a movable connection of a device such as a brake line, as long as it meets the purpose of the connection, that is, the wedge of the corresponding wedge block 5 and the groove 7 of the support block 6 can be moved closer or farther away from each other directly or through a lever, so that the two long arms 9 are opened or closed and the clamping groove 10 is allowed to approach the outlet hole of the spring machine to clamp the newly formed spring part, and release the spring part after being away from the outlet hole.

[0037] A flange 17 is provided in the annular guide rail 14, and both ends of the support rod 16 are fixed to the flange 17 by bolts, so that the wedge block 5 and the support block 6 can be distributed at multiple angles along the axis of the annular guide rail 14. Obviously, the flange is only a preferred way to achieve this technical purpose, and it can also be achieved by using a lockable bearing or the like.

[0038] Example 2

[0039] A method for producing a side ear spring, using the above-mentioned spring forming device, comprises the following steps:

[0040] The spring machine curls the elastic wire to produce earless spring a8;

[0041] The two long arms 9 move, and the clamping grooves on the long arms cooperate to clamp the earless spring a8, and the spring machine cuts off the end of the earless spring a8;

[0042] The two long arms 9 move to move the earless spring a8 to be located between a wedge block 5 and a support block 6 at both ends;

[0043] The wedge block 5 and the support block 6 are brought close to each other, so that a section of one loop of the earless spring a8 is embedded in the groove 7 of the support block 6, and the tip of the wedge block 5 is inserted between the corresponding two loops, and the two loops are separated at this point until the desired angle is reached, forming double ears a9, as shown in FIG. Fig.11 As shown;

[0044] The wedge block 5 and the support block 6 move away from each other, and the two long arms 9 are separated to collect the formed double-ear spring.

[0045] Example 3

[0046] like Fig.10 As shown, a method for producing a middle ear spring is provided. The difference from Example 2 is that in the double ear forming step of this embodiment, the wedge block and the support block are close to each other, so that the groove of the support block is moved to the center axis of the spring, a section of a circle of the earless spring is embedded in the groove of the support block, and the tip of the wedge block is inserted between the corresponding two circles. As the wedge block and the support block continue to approach each other, the two circles are separated at this point, and when the first connecting rod rotates along the movable rotating axis, the movable rotating axis translates and compresses the support spring, pulling the wedge block outward until the outermost circle of the earless spring is pressed to the desired angle.

[0047] By placing the support block at the bottom of the earless spring, you can produce a spring with side ears (such as Fig.11 As shown); Move the support block to the center axis of the earless spring, and the middle ear spring can be produced (as shown Fig.10 as shown).

[0048] If necessary, the spring forming device is installed in front of an existing universal machine with multiple movable arms (such as fixing the bracket to the universal machine), and the required movable arms are connected to the corresponding components (gripping device, first separation device, second separation device, etc.). Since each movable arm can be programmed and controlled by the industrial computer of the universal machine, it is obvious that those skilled in the art can adaptively program it to meet the technical requirements of the present invention without creative work.

[0049] During the working process of the present invention, when the current spring forms two ears, the next spring can begin to be formed into an earless spring. In actual production, it takes the same time to obtain a double-ear spring as to continuously produce an earless spring, while in conventional technology, it takes much less time to produce an earless spring than to produce a double-ear spring. The present invention greatly improves the production efficiency of the spring. Considering the improvement of efficiency and the cost of purchasing a special machine, the present invention greatly reduces the production cost and is particularly suitable for the production of middle-ear springs.

[0050] In the embodiment, the wedge of the wedge block 5 and the groove 7 of the support block 6 are opposite and staggered by a certain distance, such as Figure 8 As shown. Here, the wedge block and the support block are moved in a relatively simple manner, that is, they move at the same speed at the same time. In fact, the wedge block and the support block can also move at different times or at the same speed as required. In appropriate settings, the technical purpose can be achieved even if the wedge and the groove are facing each other.

[0051] The connection mechanism (including the first straight rail 12, the second straight rail 13, the annular guide rail 14, etc.) is provided to adjust the relative position and direction between the first separation device and the second separation device to adapt to the shape requirements of different middle ear springs (including the length of the middle ear spring, the angle of the two ears, etc.).

[0052] The embodiments described in the present invention are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by engineers and technicians in this field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have all been recorded in the claims.

Claims

1. A spring forming method, characterized in that: The spring forming method adopts a spring forming device to form a spring, and the spring forming device includes a bracket, a clamping device, a first separation device, and a second separation device. The first separation device and the second separation device are arranged on the bracket, and the clamping device can be connected to the bracket through a movable arm. The first separation device and the second separation device have the same structure and are symmetrically arranged on both sides of the clamping device. They both include a wedge block and a support block. The support block is provided with a tip with a groove, and the wedge of the wedge block and the groove of the support block are opposite. The clamping device includes a base and two long arms, one end of each long arm is axially connected to the base, and the side of the other end is provided with a relative clamping groove, and the two long arms can cooperate to clamp the spring in the clamping groove. The first separation device and the second separation device are both connected to the bracket through a connecting mechanism, and the tips of the wedge block and the support block can approach and move away from each other. The wedge block, the support block, the base of the clamping device, and the long arm can be connected to the moving arm of the spring machine and driven by the moving arm; The above-mentioned connecting mechanism includes a first straight rail, a second straight rail, and an annular guide rail. The annular guide rail is vertically arranged. The wedge block and the support block are respectively connected to the first connecting rod and the second connecting rod, and are arranged at one end of the first connecting rod and the second connecting rod. The middle parts of the first connecting rod and the second connecting rod are connected to the support rod shaft in the annular guide rail. The support rod can rotate in the annular guide rail. The annular guide rail is slidably connected to the second straight rail, and the second straight rail is slidably connected to the first straight rail. The first straight rail is fixed on the bracket; the positions of the rotation axes of the first connecting rod and the support rod are fixed relative to the support rod, and a movable rotating axis is fixedly arranged in the middle part of the second connecting rod. A slide groove is arranged on the support rod, and the movable rotating axis is embedded in the slide groove, and a support spring connected to the movable rotating axis is arranged on the side of the slide groove away from the wedge block, and an adjusting screw is arranged on a section of the second connecting rod away from the wedge block, and one end of the adjusting screw is against the annular guide rail; the spring forming method includes the following steps: a spring machine curls the elastic wire to form an earless spring; two long arms move, and the clamping grooves on the long arms cooperate to clamp the earless spring, and the spring machine cuts off the end of the earless spring; The two long arms move to move the earless spring to the two ends, respectively located between a wedge block and a support block; double-ear forming: the wedge block and the support block approach each other, so that the groove of the support block moves to the center axis of the spring, a section of a circle of the earless spring is embedded in the groove of the support block, and the tip of the wedge block is inserted between the corresponding two circles. As the wedge block and the support block continue to approach each other, the two circles are separated at this point, and when the first connecting rod rotates along the movable rotating axis, the movable rotating axis translates and compresses the support spring, pulling the wedge block outward until the outermost circle of the earless spring is pressed to the desired angle; the wedge block and the support block move away from each other, the movable rotating axis returns to its original position, the two long arms separate, and the formed middle-ear spring is collected.

2. A spring forming method according to claim 1, characterized in that: The other ends of the first connecting rod and the second connecting rod are respectively hard-connected or soft-connected to a movable arm, and one end of the long arm of each clamping device away from the clamping groove is hard-connected or soft-connected to a movable arm.

3. A spring forming method according to claim 1, characterized in that: A flange is arranged in the annular guide rail, and both ends of the support rod are fixed to the flange by bolts.

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