A waveform spring forming device

Abstract

A waveform spring forming device includes a mandrel and a grooved pulley. The grooved pulley is located in front of the mandrel and presses downward on the flat wire extending out of the mandrel. It also includes a clamp, a left stamping module, a right stamping module, and a sizing rod. The clamp is located below the grooved pulley. The jaws of the clamp are inclined backward, and a groove for clamping the flat wire is provided on the jaws. During the feeding process of the flat wire, the flat wire is pressed by the grooved pulley, passes through the groove, and is folded upward to form a spring coil. The sizing rod is located below the jaws and passes through the spring coil. The left stamping module and the right stamping module alternately stamp the spring coil from the lower left and lower right of the jaws respectively to form the peaks and valleys of the waveform spring. The number of coils stamped by the left stamping module and the right stamping module is the current spring coil. When stamping, the sizing rod presses against the current spring coil from above to prevent the current spring coil from deforming irregularly. The operation beat of the present invention is short, the processing efficiency is high, the structure is simple, and the consistency of the finished product quality is high.

Description

Technical Field

[0001] The present invention belongs to the technical field of spring machines, and particularly relates to a waveform spring forming device. Background Art

[0002] A waveform spring is an elastic element with several peaks and valleys on a thin metal ring, and is usually applied to equipment where both the load and the deformation amount are not large, and a small spring stiffness is required and an axial pre-pressure needs to be applied, such as motors, small and medium-sized asynchronous motors, compressors, hydraulic presses, automobiles and other equipment.

[0003] The waveform spring is automatically processed and formed by a spring machine. For example, the spring machine for forming a waveform spring disclosed in the patent with the application number CN201410300937.0 includes a feeding shaft hole and seven sliding tool holders. The seven sliding tool holders include: an upper left sliding tool holder and an upper right sliding tool holder, and clamping blocks are respectively arranged at the ends of the upper left sliding tool holder and the upper right sliding tool holder; a directly right sliding tool holder, and a dial rod is arranged at the end of the directly right sliding tool holder; a directly upper sliding tool holder, and an outer diameter tool for forming the outer diameter of the waveform spring is arranged at the end of the directly upper sliding tool holder; a directly lower sliding tool holder, and a rotating shaft for forming the peaks and valleys of the waveform spring is arranged on the directly lower sliding tool holder, and a rotating motor for controlling its rotation around its own central axis is connected to the rotating shaft; a directly left sliding tool holder and a lower right sliding tool holder, and cutting tools that match each other are respectively arranged at the ends of the directly left sliding tool holder and the lower right sliding tool holder. The structure of this spring machine is very complex, there are many tool holders, and the coordinated actions between each tool need to be reliably coordinated. The large number of tool actions results in a long working time for the workpiece, slowing down the production rhythm; and its raw material is continuous ring-shaped incoming material, and it is necessary to pre-process the ring-shaped incoming material in the previous process or purchase the ring-shaped incoming material to produce, and it is impossible to directly process flat wire into a waveform spring, increasing the processing time and production cost. Summary of the Invention

[0004] The purpose of the present invention is to provide a waveform spring forming device to solve the problems of a large number of tool holders of the spring machine, a long action rhythm, and low applicability due to the limitation of raw material selection.

[0005] A waveform spring forming device includes a mandrel and a grooved wheel. The grooved wheel is located in front of the mandrel and squeezes downward the flat wire extending out of the mandrel; it also includes a clamp, a left stamping module, a right stamping module and a sizing bar.

[0006] The clamp is located below the grooved wheel. The jaws of the clamp are inclined backward, and a groove for clamping the flat wire is arranged on the jaws. During the feeding process of the flat wire, the flat wire is squeezed by the grooved wheel and then passes through the groove and is folded upward to form a spring coil.

[0007] The sizing rod is located below the jaws and penetrates through the spring coil; the left stamping module and the right stamping module respectively and alternately stamp the spring coil from the lower left and lower right of the jaws to form the peaks and valleys of the wave spring. The coil being stamped by the left stamping module and the right stamping module is the current spring coil. When stamping, the sizing rod presses against the current spring coil from above to prevent the current spring coil from deforming irregularly.

[0008] Preferably, the mandrel, the clamp, the left stamping module, and the right stamping module are all installed on an upright frame;

[0009] The forming device further includes a cutting knife disposed opposite to the sizing rod. A linear drive member I is also installed on the frame, and the cutting knife is driven by the linear drive member I to cut off the spring coil;

[0010] The bottom of the jaws is provided with a ramp-shaped anvil surface. The left stamping module and the right stamping module respectively press the flat wire material against the anvil surface to bend the flat wire material, and the cutting knife can move closely along the anvil surface to cut off the flat wire material.

[0011] Preferably, the projection of the groove body of the jaws in the horizontal plane is inclined towards the side of the sizing rod, guiding the flat wire material to automatically move obliquely rearward along with the feeding process, facilitating avoiding the mandrel and forming the spring coil in the set direction.

[0012] Preferably, the cutting knife includes a blade portion and a pushing step. There is a notch at the tail of the blade portion to form the pushing step. After the blade portion cuts off the current spring coil, the pushing step pushes the wave spring towards the side of the sizing rod as the cutting knife moves forward.

[0013] Furthermore, a guiding rod is installed above the mandrel on the frame. The guiding rod penetrates through the spring coil obliquely downward and extends obliquely forward, guiding the cut wave spring into the storage container in an orderly manner.

[0014] Preferably, the grooved wheel is rotatably installed on a pair of wheel seats. A positioning block for positioning the sizing rod is also fixed on the wheel seats. The positioning block is provided with a hole I adapted to the sizing rod, and the end of the sizing rod can extend into the hole I.

[0015] Optionally, the sizing rod is installed on a linear drive member II and is driven by the linear drive member II to horizontally move into the spring coil, and the sizing rod closely abuts against the current spring coil.

[0016] Another alternative is that the linear drive member I is installed on the frame, the connecting rod I is installed at the output end of the linear drive member I, and the cutting tool is installed at the end of the connecting rod I; the connecting rod I is also fixedly connected to the slidable rod II that can move horizontally, the slidable rod II is fixedly connected to the connecting rod II, the shaping rod is installed on the connecting rod II, and the linear drive member I drives the cutting tool and the shaping rod to move synchronously, so that the cutting tool and the shaping rod alternately act on the spring coil.

[0017] Preferably, a dovetail-shaped slide rail is installed on the frame, a chute matching the slide rail is arranged on the slidable rod, and the slidable rod moves along the slide rail.

[0018] Furthermore, the shaping rod is installed in the bearing of the connecting rod II, several fan blades are distributed along the circumferential direction of the outer wall of the shaping rod at the tail end of the shaping rod, a nozzle with a solenoid valve is installed on the frame, the nozzle is connected to a compressed air gas source, and the nozzle can intermittently blow the fan blades to drive the shaping rod to rotate.

[0019] The beneficial effects of the present invention are as follows:

[0020] The raw materials of the present invention directly use continuous flat wire materials for processing, shortening the processing working hours and improving the processing efficiency. The present invention utilizes the grooved pulley, the clamp, the shaping rod, the left stamping module and the right stamping module to cooperate in stamping to form the wave crests and wave troughs of the current spring coil. The number of cutting tools is small, thereby shortening the stamping action beat, further improving the processing efficiency and simplifying the structure. The present invention can flexibly adjust the stroke and stamping times of the left stamping module and the right stamping module to adapt to different specifications of waveform springs.

[0021] The shaping rod of the present invention can resist the current spring coil to improve the roundness of its shape; the shaping rod also bears the upward component force exerted on the current spring coil by the left stamping module and the right stamping module during the stamping process, preventing the current spring coil from deforming irregularly due to force and improving the quality consistency of the waveform spring.

[0022] The groove body of the clamp is slightly inclined away from the cutting tool, guiding the current spring coil to always move to the right during the forming process, ensuring the stability of the waveform spring forming and avoiding interfering with the punching action of the cutting tool.

[0023] The anvil surface at the bottom of the jaws of the clamp, on the one hand, cooperates with the left punch and the right punch to bend the current spring coil to form the wave crests and wave troughs; on the other hand, the anvil surface cooperates with the cutting tool to make the cutting tool cut the waveform spring along the anvil surface, realizing the reliability and accuracy of the punching action and ensuring that the punched section has no burrs and deformations.

[0024] The material guiding rod penetrates through the spring coil and inclines forward and downward, which can smoothly guide the wave springs into the storage container in an orderly manner, facilitating the rapid collection of wave springs and saving the whole material time.

[0025] The cutting knife and the shaping rod are both driven by a linear driving member one to move synchronously left and right, making the structure of the driving device simpler. Moreover, the connection structure and cooperation relationship between the connecting rod one, the connecting rod two, the connecting rod three, the sliding rod and the slide rail avoid the shaking phenomenon when the cutting knife operates, further improving the punching precision and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0027] Figure 1 is a schematic side view structure diagram of the present invention;

[0028] Figure 2 is a schematic front view structure diagram of Embodiment 1 of the present invention;

[0029] Figure 3 is a schematic top view structure diagram of the clamp guiding the flat wire;

[0030] Figure 4 is a partial schematic side view of the positional relationship between the clamp and the cutting knife of the present invention;

[0031] Figure 5 is a schematic structure diagram of the positioning block of the present invention;

[0032] Figure 6 is a schematic diagram of the positional relationship among the positioning block, the mandrel and the material guiding rod in the stamping state of the present invention;

[0033] Figure 7 is a schematic diagram of the cutting knife pushing material state of the present invention;

[0034] Figure 8 is a schematic front view structure diagram of Embodiment 2 of the present invention;

[0035] Figure 9 is a schematic front view in the stamping state of Embodiment 2 of the present invention;

[0036] Figure 10 is a schematic front view in the cutting state of Embodiment 2 of the present invention;

[0037] Figure 11 is a side view of the shaping rod in Embodiment 2 of the present invention.

[0038] The labels in the figure are: 1, frame; 2, mandrel; 3, grooved pulley; 4, straightening mechanism; 5, feeding mechanism; 6, wheel seat; 7, annular groove; 8, flat wire; 9, clamp; 10, left stamping module; 11, right stamping module; 12, sizing bar; 13, jaws; 14, trough; 15, anvil surface; 16, notch; 17, first stamping drive device; 18, left punching knife; 19, second stamping drive device; 20, right punching knife; 21, second linear drive; 22, positioning block; 23, first hole; 24, second hole; 25, first linear drive; 26, cutting knife; 27, blade part; 28, pushing step; 29, guide bar; 30, first connecting rod; 31, third connecting rod; 32, second sliding rod; 33, second connecting rod; 34, bearing seat; 35, slide rail; 36, nozzle; 37, fan blade; 38, wave spring; 39, wave crest; 40, wave trough; 41, current spring coil. Detailed implementation mode

[0039] Embodiment 1

[0040] As Figures 1 to 7 shown, a wave spring forming device includes a frame 1, a mandrel 2 and a grooved pulley 3. The frame 1 is installed vertically, the mandrel 2 is installed inside the frame 1, and the front end of the mandrel 2 extends outside the frame 1. A wire hole matching the flat wire 8 is provided in the mandrel 2, and the wire hole is arranged in the vertical direction. The flat wire 8 is straightened by the straightening mechanism 4 and conveyed into the wire hole by the feeding mechanism 5, so that its end extends outside the wire hole. The straightening mechanism 4 and the feeding mechanism 5 are both well-known technologies, so they will not be elaborated here.

[0041] Please refer to Figure 1 , a wheel seat 6 is fixedly installed on the frame 1, a rotatable grooved pulley 3 is installed on the lower side of the wheel seat 6, the axial direction of the grooved pulley 3 extends along the left-right direction, the grooved pulley 3 is located in front of the mandrel 2 and close to the mandrel 2, and an annular groove 7 for positioning the flat wire 8 is provided on the wheel wall of the grooved pulley 3. The bottom of the annular groove 7 is slightly lower than the wire hole. When the flat wire 8 extends out of the wire hole and enters the annular groove 7, the annular groove 7 squeezes the flat wire 8 extending outside the mandrel 2 downward, so that the flat wire 8 continuously bends downward with its feeding process, and the grooved pulley 3 itself also rotates due to friction. The wheel seat 6 is installed on a vertical driving device, and the vertical driving device can adjust the height of the wheel seat 6 to change the bending diameter of the flat wire by the grooved pulley. The vertical driving device can be a cylinder or a lead screw.

[0042] Please refer to Figure 2 , this device also includes a clamp 9, a left stamping module 10, a right stamping module 11 and a sizing bar 12.

[0043] The clamp 9 is installed on the frame 1 and is located below the grooved pulley 3. The top of the clamp 9 is provided with a jaw 13 that slopes backward. An open-shaped groove 14 for clamping the flat wire 8 is arranged on the jaw 13. During the feeding process of the flat wire 8, the flat wire 8 is squeezed downward by the grooved pulley 3 and then passes through the groove 14, and continues to curl to form a spring coil. Please refer to Figure 3 , the projection of the groove 14 of the jaw 13 in the horizontal plane is slightly inclined toward the side of the sizing rod 12. In this embodiment, this projection is slightly inclined to the right, but the inclination direction is not limited to the right side. It is necessary to ensure that it cannot be inclined toward the side of the cutting knife 26 to avoid the formed spring coil interfering with the cutting knife 26 to cut off the root of the spring coil. Preferably, the inclination angle of the groove 14 is about 0.5 - 1.5°, so as to guide the flat wire 8 to automatically move backward and to the right along with the feeding process, facilitating the spring coil to avoid the mandrel 2 during the curling process and uniformly forming the spring coil in the set direction, and avoiding the mandrel 2 interfering with the continuous forming of the spring coil. Preferably, the front end of the mandrel 2 is provided with a stepped notch 16 to avoid the spring coil in the forming process.

[0044] The left stamping module 10 and the right stamping module 11 are both installed on the frame 1 and are respectively located on the left and right sides of the clamp 9. The left stamping module 10 includes a stamping driving device 17 and a left stamping knife 18 installed on the stamping driving device 17. The right stamping module 11 includes a stamping driving device 19 and a right stamping knife 20 installed on the stamping driving device 19. The two driving devices respectively drive the left stamping knife 18 and the right stamping knife 20 to alternately stamp the curled spring coil from the lower left and the lower right to form the wave crest 39 and the wave trough 40 of the spring coil. Specifically, define the number of turns of the spring coil stamped by the left stamping module 10 and the right stamping module 11 as the current spring coil 41. After the current spring coil 41 is subjected to the punching force of the left stamping knife 18 or the right stamping knife 20, it abuts against the jaw 13 and then bends to the right or left, thereby forming the wave crest 39 or the wave trough 40.

[0045] The sizing rod 12 is used to prevent the current spring coil 41 from deforming irregularly inward when subjected to the upward punching force of the left stamping knife 18 and the right stamping knife 20, and to ensure the processing accuracy and roundness of the spring coil. The sizing rod 12 is located below the side of the jaw 13 and penetrates through the spring coil. The sizing rod 12 is close to the current spring coil 41 and is fixed during its operation, and will not displace or shake even when subjected to the punching force of the stamping knife. When the left stamping module 10 and the right stamping module 11 stamp the wave crest 39 and the wave trough 40, the sizing rod 12 abuts against the current spring coil 41 from above, avoiding the irregular deformation of the current spring coil.

[0046] Please refer to Figure 2 , a linear driving member 21 is installed on the frame 1, and the sizing rod 12 is installed on the linear driving member 21 and is driven by the linear driving member 21 to horizontally move into the spring coil. Please refer to Figure 5 and Figure 6, a positioning block 22 for positioning the sizing rod 12 is fixed on the wheel seat 6 of the Geneva wheel 3. A first hole 23 adapted to the sizing rod 12 is provided on the positioning block 22. The end of the sizing rod 12 can be driven by the second linear driving member 21 to extend into the first hole 23 and be positioned therein, ensuring that it will not shake when subjected to the punching forces of the left punching knife 18 and the right punching knife 20, and improving the reliability of the anti-deformation effect of the sizing rod 12 on the spring coil.

[0047] The forming device further includes a cutting knife 26 disposed opposite to the sizing rod 12. A first linear driving member 25 is installed on the frame 1, and the cutting knife 26 is driven by the first linear driving member 25 to cut the spring coil.

[0048] Please refer to Figure 1 and Figure 4 , a ramp-shaped anvil surface 15 is provided at the bottom of the jaw 13. The left stamping module 10 and the right stamping module 11 respectively press the flat wire 8 against the anvil surface 15 to bend the flat wire 8. In addition, the cutting knife 26 moves closely along the anvil surface 15 to cut the flat wire 8. The cooperation between the anvil surface 15 and the cutting knife 26 ensures the accuracy and stability of the punching action of the cutting knife 26, making the cut surface of the flat wire smooth without burrs and deformation.

[0049] Please refer to Figure 7 , as a further improvement, the cutting knife 26 includes a blade portion 27 and a pushing step 28. A notch is formed at the tail of the blade portion 27 to form the pushing step 28. After the blade portion 27 cuts the current spring coil, the pushing step 28 continues to push the corrugated spring toward the sizing rod 12 side as the cutting knife 26 moves to the right, so that the corrugated spring 38 quickly disengages from the forming station in the same direction, facilitating the collection of the corrugated spring 38 and the rapid processing of the next corrugated spring.

[0050] Please refer to Figure 1 and Figure 2 , a guide rod 29 is installed above the mandrel 2 on the frame 1. It penetrates the spring coil obliquely downward and then continues to extend obliquely forward and downward, guiding the cut corrugated spring 38 into the storage container in an orderly manner. The guide rod 29 is integrally Z-shaped, that is, the inclination angle of the guide rod 29 inside the spring coil becomes gentle and is basically parallel to the horizontal plane, so that the part of the guide rod 29 inside the spring coil hardly contacts the spring coil, avoiding interfering with the formation of the wave peaks and wave valleys of the spring coil, and the corrugated spring 38 can quickly slide over the guide rod 29 after being cut.

[0051] Embodiment 2

[0052] Based on Embodiment 1, this embodiment changes the installation method of the sizing rod 12 to make the driving structure simpler and more reliable. Please refer to Figures 8 to 10, a linear drive member 25 is installed on the frame 1 of this embodiment. The output end of the linear drive member 25 is installed with a horizontal connecting rod 30, and a cutting knife 26 is installed at the end of the connecting rod 30; a horizontally movable sliding rod 32 is also fixedly connected to the connecting rod 30 through a vertical connecting rod 31. The other end of the sliding rod 32 is fixedly connected to a vertical connecting rod 33, and a shaping rod 12 is installed at the bottom end of the connecting rod 33. The linear drive member 25 drives the cutting knife 26 and the shaping rod 12 to move left or right synchronously, so that the cutting knife 26 and the shaping rod 12 act on the spring coil alternately, simplifying the structure of the driving device.

[0053] A dovetail-shaped slide rail 35 is installed on the frame 1, and a chute matching the slide rail 35 is arranged on the sliding rod. The sliding rod moves horizontally along the slide rail 35, and the moving action is more accurate. In addition, the sliding rod and the slide rail 35 cooperate with each other to keep the connecting rod 30 in a horizontal state, preventing the suspended connecting rod 30 from shaking during the movement, and further preventing the cutting knife 26 at its end from shaking, improving the accuracy of the cutting action of the cutting knife.

[0054] Please refer to Figure 5 , a hole 24 for avoiding the cutting knife 26 is provided on the positioning block 22. The cross-sectional area of the hole 24 is larger than the maximum cross-sectional area of the cutting knife 26. After the cutting knife 26 passes through the hole 24, the root of the spring coil is cut off.

[0055] Furthermore, a bearing seat 34 with a bearing is installed at the bottom end of the connecting rod 33, and the shaping rod 12 is rotatably installed in the bearing. A nozzle 36 controlled by an electromagnetic valve is installed on the frame 1. The nozzle 36 is connected to an air flow generating device such as an air pipe of a compressed air source or a blower; please refer to Figures 8 to 11 , a number of fan blades 37 are distributed along the circumferential direction of the outer wall of the shaping rod 12 at the tail end of the shaping rod 12. The air outlet of the nozzle 36 faces the fan blades 37. The electromagnetic valve can be controlled to open the nozzle 36 to intermittently blow the fan blades 37, thereby driving the shaping rod 12 to rotate and changing the contact surface between the shaping rod 12 and the spring coil, preventing a certain fixed part of the shaping rod 12 from being in contact with the punching knife and the spring coil for a long time and causing wear, which affects the shaping accuracy of the spring coil.

[0056] The position of the nozzle 36 is set to: it can be in the position of blowing air against the shaping rod 12 extending into the spring coil during the stamping process. The preferred position is: when the shaping rod 12 returns to the initial position, the nozzle 36 can blow air directly against the shaping rod 12, because at this time the shaping rod 12 is not in contact with the positioning block 22 or the spring coil, and the rotation is smoother and more flexible.

[0057] Please refer to Figure 11 , preferably, the number of the fan blades 37 is at least three, and the installation direction of the fan blades 37 extends along the axial direction of the shaping rod 12, with a larger wind receiving area.

[0058] Both the first linear drive member 25 and the second linear drive member 21 can be common linear drive mechanisms such as air cylinders, hydraulic cylinders, electric cylinders, or linear modules.

[0059] The other structures of this embodiment are the same as those of Embodiment 1.

[0060] The working process of this embodiment is as follows:

[0061] The straightening mechanism 4 straightens the flat wire 8 of the coiled material, and the feeding mechanism 5 feeds the straightened flat wire 8 into the mandrel 2 and extends it in front of the mandrel 2;

[0062] The first linear drive member 25 drives the sizing rod 12 to move leftward so that its end enters the hole 23 of the positioning block 22;

[0063] When the flat wire 8 passes through the grooved pulley 3, it is squeezed downward by its annular groove 7 and curls and deforms. As the flat wire 8 continues to be fed, it continues to curl into a spring coil by itself and enters the jaws 13 of the clamp 9, and is guided by the groove body 14 to move rightward and rearward; the sizing rod 12 contacts the inner ring of the current spring coil;

[0064] The left stamping module 10 and the right stamping module 11 alternately stamp the current spring coil 41, and respectively bend the current spring coil 41 to the right and left under the cooperation of the anvil surface 15 of the jaws 13 to form a wave crest 39 or a wave trough 40; the stroke of the left punch 18 and the right punch 20 and the number of repeated stampings per beat can be changed accordingly according to the physical properties such as the peak value of the wave crest or wave trough and the hardness of the flat wire itself; during the stamping process, the sizing rod 12 resists the current spring coil to prevent it from being irregularly deformed by the upward component force of the left stamping module 10 and the right stamping module 11, and ensure the consistency of product quality;

[0065] When the stamping of the spring coil is completed, the first linear drive member 25 drives the sizing rod 12 to reset to the initial position to the right. At this time, the solenoid valve is opened, and the nozzle 36 blows air to the fan blade 37 of the sizing rod 12, and the fan blade 37 drives the sizing rod 12 to freely rotate by an angle to change the force-bearing surface of the sizing rod 12; at the same time, the cutter 26 quickly moves to the right after passing through the hole 24 of the positioning block 22, fits the anvil surface 15 of the clamp 9 to cut off the root of the spring coil, forms a corrugated spring, and continues to move a short distance to the right to push the corrugated spring to the right;

[0066] The corrugated spring slides quickly forward and downward along the guide rod 29, enters the storage container and is automatically arranged in an orderly manner;

[0067] The feeding mechanism 5 continues to convey the flat wire 8, and starts to repeat the above steps to process the next corrugated spring.

[0068] During the above process, the feeding mechanism 5 will pause feeding in coordination with the stamping action or the cutting action, and continue feeding after the corresponding action is completed. This pause action is completed by the control system.

[0069] The foregoing is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A waveform spring forming device, comprising a mandrel and a grooved pulley, wherein the grooved pulley is located in front of the mandrel and presses downward on a flat wire extending out of the mandrel; characterized in that, It further includes a clamp, a left stamping module, a right stamping module and a sizing rod; The clamp is located below the grooved pulley. The jaws of the clamp are inclined backward. Grooves for clamping flat wire are provided on the jaws. During the feeding process of the flat wire, the flat wire is extruded by the grooved pulley and then passes through the grooves and curls upward to form a spring coil; The sizing rod is located below the jaws and penetrates through the spring coil; The left stamping module and the right stamping module alternately stamp the spring coil from the lower left and lower right of the jaws respectively to form the wave peaks and wave valleys of the wave spring. The number of turns of the spring coil stamped by the left stamping module and the right stamping module is the current spring coil. When stamping, the sizing rod presses against the current spring coil from above to prevent the current spring coil from deforming irregularly; The mandrel, the clamp, the left stamping module and the right stamping module are all installed on an upright frame; It further includes a cutter disposed opposite to the sizing rod. A linear drive member I is also installed on the frame. The cutter is driven by the linear drive member I to cut off the spring coil; The bottom of the jaws is provided with a ramp-shaped anvil surface. The left stamping module and the right stamping module respectively press the flat wire against the anvil surface to bend the flat wire. The cutter can move closely along the anvil surface to cut off the flat wire; The projection of the groove of the jaws in the horizontal plane is inclined toward the side of the sizing rod, guiding the flat wire to automatically move obliquely backward along with the feeding process, facilitating avoiding the mandrel and forming a spring coil in a set direction; The cutter includes a blade portion and a pushing step. A notch is formed at the tail of the blade portion to form the pushing step. After the blade portion cuts off the current spring coil, the pushing step pushes the wave spring toward the side of the sizing rod as the cutter moves forward; The grooved pulley is rotatably installed on a pair of wheel seats. A positioning block for positioning the sizing rod is also fixed on the wheel seat. A hole I adapted to the sizing rod is provided on the positioning block, and the end of the sizing rod can extend into the hole I.

2. The waveform spring forming device according to claim 1, wherein A guiding rod is installed above the mandrel on the frame. The guiding rod penetrates through the spring coil obliquely downward and extends obliquely forward to orderly guide and slide the cut wave spring into a storage container.

3. The waveform spring forming device according to claim 1, characterized in that, The sizing rod is installed on a linear drive member II and is driven by the linear drive member II to horizontally move into the spring coil, and the sizing rod closely abuts against the current spring coil.

4. The waveform spring forming device according to claim 1 or 2, characterized in that, The linear drive member I is installed on the frame. The output end of the linear drive member I is installed with a connecting rod I. The cutter is installed at the end of the connecting rod I; The connecting rod I is also fixedly connected with a slidable rod II that can move horizontally. The slidable rod II is fixedly connected with a connecting rod II. The sizing rod is installed on the connecting rod II. The linear drive member I drives the cutter and the sizing rod to move synchronously, so that the cutter and the sizing rod alternately act on the spring coil.

5. The waveform spring forming device according to claim 4, wherein A dovetail-shaped slide rail is installed on the frame. A chute matching the slide rail is provided on the slidable rod, and the slidable rod moves along the slide rail.

6. The waveform spring forming device according to claim 4, characterized in that, The shaping rod is installed in the bearing of the second connecting rod. A number of fan blades are distributed along the circumferential direction of the outer wall of the shaping rod at the tail end of the shaping rod. A nozzle with a solenoid valve is installed on the frame. The nozzle is connected to a compressed air source or a blower air pipe. The nozzle can intermittently blow the fan blades to drive the shaping rod to rotate.

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