Snap spring continuous forming device and forming method thereof

Abstract

The invention discloses a clamp spring continuous forming device and a forming method thereof, and belongs to the technical field of clamp spring machining.The clamp spring continuous forming device comprises a rack and further comprises a rotary wire feeding device and a multi-step machining device, the rotary wire feeding device is installed on the rear side of the rack, and the multi-step machining device is installed on the middle side of the rack; the multi-step machining device comprises driving mechanisms, a cutting mechanism, an embossing mechanism, a step pressing mechanism and an arc pressing mechanism, the eight driving mechanisms are distributed on the middle side of the rack at equal intervals in a circumferential array mode, the driving mechanisms are installed on the middle side of the rack, and the eight driving mechanisms are sequentially marked as the first driving mechanism to the eighth driving mechanism clockwise from the uppermost side. The embossing mechanism comprises a wave cutting die female die, a wave cutting die male die, a heightening block, an extending block and a rotating base, and the wave cutting die female die is installed on a seventh driving mechanism. In this way, a steel wire can be subjected to multi-section bending and then subjected to multiple times of integral pressing forming.

Description

Technical Field

[0001] The invention relates to the technical field of retaining spring processing, in particular to a retaining spring continuous forming device and a forming method thereof. Background Art

[0002] Circlips are key elastic elements used for axially fixing parts in the mechanical field. Their continuous forming process is the key to achieving efficient batch production. Continuous forming of circlips refers to the use of dedicated automated equipment and multi-station composite molds to continuously feed metal strips (such as spring steel and stainless steel strips), and then continuously process them through multiple processes such as punching, bending, and curling at one time, and finally form them into batches of circlips in an efficient production process.

[0003] Chinese patent CN213410158U proposes a convex point spring forming device, which includes a central mold installed on a fixed plate fixed to the device housing, a convex point die installed on the central mold, which has a groove for pressing the convex point on the convex point spring, and a forming knife group fixed on the device housing, which includes a forming knife, a circular forming knife and an end circular forming knife; the forming knife is horizontally installed on the rear side of the central mold, and the circular forming knife is vertically installed above the central mold; the end circular forming knife is installed on a three-dimensional knife seat fixed to the device housing, and the cutting knife is fixed on the device housing. The device shell is installed obliquely on the front side of the central mold, and its front end has an oblique sharp blade, a convex punch, which is installed on the three-dimensional knife seat, perpendicular to the convex die, and located on the side of the end circle forming knife. The forming knife, the circular forming knife and the end circle forming knife have the same structure. The forming knife, the circular forming knife and the end circle forming knife all include a fixing part and a working part; the working part is fixed to the device shell by a fixing part, and its top end is semicircular concave. The inner diameter of the semicircular concave at the top end of the forming knife, the circular forming knife and the end circle forming knife all matches the outer circumference curvature of the central mold.

[0004] However, the technical solution of this patent has the following problems:

[0005] This patent cannot perform multiple bending of the steel wire and then multiple integral pressing forming.

[0006] Based on this, the present invention designs a continuous forming device and a forming method for a retaining spring to solve the above problems. Summary of the Invention

[0007] In view of the above-mentioned shortcomings of the prior art, the present invention provides a continuous forming device and a forming method for a retaining spring.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A continuous forming device for a retaining spring comprises a frame, and further comprises: a rotary wire feeding device and a multi-step processing device, wherein the rotary wire feeding device is mounted on the rear side of the frame, and the multi-step processing device is mounted on the middle side of the frame, and the multi-step processing device comprises: a driving mechanism, a cutting mechanism, an embossing mechanism, a step pressing mechanism and an arc pressing mechanism, wherein eight driving mechanisms are arranged in an evenly spaced circular array on the middle side of the frame, and the driving mechanism is mounted on the middle side of the frame, and the eight driving mechanisms are marked as driving mechanisms numbered one to eight in a clockwise order from the top, and the embossing mechanism comprises : Wave cutter die, wave cutter die punch, heightening block, extension block and rotating seat, the wave cutter die is installed on the No. 7 driving mechanism, the wave cutter die punch is installed on the No. 3 driving mechanism, the wave cutter die is provided with a wave-shaped groove, the wave cutter die punch is provided with a wave-shaped protrusion, the heightening block is fixedly installed on the wave cutter die punch, the extension block is fixedly installed on the end of the heightening block away from the wave cutter die punch, the first strip groove is provided on the upper left side of the extension block, and the rotating seat is located above the No. 5 driving mechanism.

[0010] Furthermore, the driving mechanism includes: a support frame, a guide rail, a slider, a movable bracket, a first gear box, a connecting rod and a first servo motor, the support frame is fixedly mounted on the upper side of the frame, the two guide rails are fixedly mounted on the support frame, the slider is slidably connected to the guide rail, the movable bracket is fixedly mounted on the slider, the first gear box housing is fixedly mounted on one end of the support frame away from the center of the frame, one end of the connecting rod is rotatably connected to the end of the movable bracket away from the center of the frame through a rotating shaft, the other end of the connecting rod is eccentrically rotatably connected to the output end of the first gear box through a rotating shaft, the first servo motor housing is fixedly mounted on the support frame, and the output shaft of the first servo motor is fixedly connected to the input end of the first gear box.

[0011] Furthermore, the driving mechanism also includes: a rebound component, which is installed on one end of the connecting rod close to the movable bracket, and the rebound component includes: a C-shaped plate and a tension spring, the C-shaped plate is rotatably connected to the rotating shaft on the side of the connecting rod close to the movable bracket, one end of the tension spring is fixedly installed on both ends of the C-shaped plate, and the other end of the tension spring is fixedly installed on the outer casing of the first gear box.

[0012] Furthermore, the wave cutter die concave mold is installed on the movable bracket of the No. 7 driving mechanism, and the wave cutter die convex mold is installed on the movable bracket of the No. 3 driving mechanism.

[0013] Furthermore, a second gear box is fixedly installed on the movable bracket of the No. 5 drive mechanism, the rotating seat is fixedly installed on the output end of the second gear box, a second servo motor is fixedly installed on the lower outer shell of the second gear box, the output shaft of the second servo motor is fixedly connected to the input end of the second gear box, a bending cutter die is fixedly installed on the rotating seat, and a second strip groove is opened on the middle side of the bending cutter die.

[0014] Furthermore, the arc pressing mechanism includes: an arc pressing die and an arc pressing punch, the arc pressing die is fixedly mounted on the movable bracket of the No. 8 driving mechanism, the arc pressing punch is fixedly mounted on the movable bracket of the No. 4 driving mechanism, an L-shaped protrusion is fixedly mounted on the middle side of the arc pressing punch, and an L-shaped groove is opened on the middle side of the arc pressing die.

[0015] Furthermore, the step pressing mechanism includes: a lower L-shaped cutting die and an upper L-shaped cutting die, the lower L-shaped cutting die is fixedly mounted on the outer shell of the second gear box through a bracket, and the upper L-shaped cutting die is fixedly mounted on the movable bracket of the No. 1 driving mechanism.

[0016] Furthermore, the cutting mechanism includes: a first cutting head and a second cutting head, the first cutting head is fixedly mounted on the movable bracket of the sixth drive mechanism, and the second cutting head is fixedly mounted on the movable bracket of the second drive mechanism.

[0017] Furthermore, the rotary wire feeding device includes: a rotating frame, an electric chuck, a third servo motor, a main gear, a driving gear, a vertical bracket, a guide wheel and a fourth servo motor. The rotating frame is rotatably connected to the middle side of the frame, and a circular opening is provided on the middle side of the rotating frame. The fixed end of the electric chuck is fixedly mounted on the rear side of the frame, the third servo motor is fixedly mounted on the rear side of the frame, the main gear is fixedly mounted on the output shaft of the third servo motor, the driving gear is fixedly mounted on the rotating end of the electric chuck, the main gear and the driving gear are meshed with each other, the vertical bracket is fixedly mounted on the rear side of the frame, the two guide wheels are rotatably connected to the vertical bracket through a rotating shaft, the fourth servo motor is fixedly mounted on the vertical bracket, and the output end of the fourth servo motor is fixedly connected to the rotating shaft of one of the guide wheels.

[0018] In order to better achieve the purpose of the present invention, the present invention also provides a forming method of a continuous forming device for a clip spring, comprising the following steps:

[0019] Step 1: Place the steel wire between the two guide wheels, then move the steel wire forward through the electric chuck and into the circular opening of the rotating frame. After the steel wire is placed, the output end of the fourth servo motor rotates to drive the guide wheel to rotate, and the guide wheel rotates to drive the steel wire forward a preset distance;

[0020] Step 2: The movable bracket of the No. 7 driving mechanism moves to drive the wave cutter die to move, and the movable bracket of the No. 3 driving mechanism moves to drive the wave cutter die to move. The wave cutter die and the wave cutter die move closer to each other to press the front end of the steel wire into a wave shape;

[0021] Step 3: The steel wire continues to extend forward, the movable bracket of the No. 5 driving mechanism moves to drive the second gear box to move, the output shaft of the second servo motor rotates to drive the input end of the second gear box to rotate, the input end of the second gear box rotates to make the output end of the second gear box rotate, the output end of the second gear box rotates to drive the bending die to rotate, bend the steel wire for the first time, the steel wire continues to extend forward, the bending die rotates, and bends the steel wire a second time into a U shape;

[0022] Step 4: The steel wire is retracted, and the electric chuck is started to clamp the steel wire and rotate it forty-five degrees. The movable bracket of the No. 8 driving mechanism moves to drive the arc pressing die to move, and the movable bracket of the No. 4 driving mechanism moves to drive the arc pressing punch to move. The arc pressing punch and arc pressing die move closer to each other to press the U-shaped end of the U-shaped steel wire into an arc shape;

[0023] Step 5: The steel wire continues to retract, and the upper L-shaped cutter die moves downward, pressing the end of the U-shaped steel wire away from the U-shaped end to form a step. At the same time, the movable bracket of the No. 3 driving mechanism moves to drive the wave cutter die punch and the extension block to move. The extension block moves to the U-shaped steel wire step position for leveling operation;

[0024] Step 6: The movable bracket of the No. 6 driving mechanism moves to drive the first cutting head to move, and the movable bracket of the No. 2 driving mechanism moves to drive the second cutting head to move. The first cutting head and the second cutting head move close to each other to cut the processed steel wire, and the retaining spring is completed.

[0025] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses a rotating wire feeding device to periodically and quantitatively feed steel wire, and the driving mechanism of the multi-step processing device is used to drive the cutting mechanism, the embossing mechanism, the step pressing mechanism and the arc pressing mechanism to move. The embossing mechanism performs a wave pressing on the steel wire and then bends the steel wire twice to form a U shape. The arc pressing mechanism performs an arc pressing on the U-shaped steel wire. The step pressing mechanism performs a step pressing operation on the U-shaped steel wire after the arc pressing. Finally, the cutting mechanism cuts the processed steel wire to form a clip, which is conducive to performing multiple integral pressing and forming after the steel wire is bent in multiple sections.

[0026] 2. By placing the steel wire between the two guide wheels of the rotating wire feeding device, then moving the steel wire forward through the electric chuck into the rotating frame circular opening, the steel wire is placed, the fourth servo motor output end rotates to drive the guide wheel to rotate, the guide wheel rotates to drive the steel wire to move forward by a preset distance, the electric chuck starts to clamp the steel wire, the third servo motor output shaft rotates to drive the main gear to rotate, the main gear rotates to drive the drive gear to rotate, the drive gear rotates to drive the electric chuck to rotate, the electric chuck rotates to drive the steel wire to rotate, so that the steel wire can move forward and backward and rotate on the rotating frame. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0028] Figure 1 is a perspective view of the present application Figure 1 ;

[0029] Figure 2 is a front view of the present application

[0030] Figure 3 is a partial side view of the present application

[0031] Figure 4 is a perspective view of the present application Figure 2 ;

[0032] Figure 5 is an enlarged view of A in Figure 4

[0033] Figure 6 is a partial structure diagram of the driving mechanism of the present application

[0034] Figure 7 is a partial structure diagram of the embossing mechanism of the present application Figure 1 ;

[0035] Figure 8 is a partial structure diagram of the embossing mechanism of the present application Figure 2 ;

[0036] Figure 9 is a partial structure diagram of the cutting mechanism, embossing mechanism, step pressing mechanism and arc pressing mechanism of the present application

[0037] Figure 10 is a partial structure diagram of the arc pressing mechanism of the present application

[0038] The reference numerals in the drawings represent respectively:​

[0039] 1. Frame; 2. Rotating wire feeder; 21. Rotating frame; 22. Electric chuck; 23. Third servo motor; 24. Main gear; 25. Drive gear; 26. Vertical bracket; 27. Guide wheel; 28. Fourth servo motor; 3. Drive mechanism; 31. Support frame; 32. Guide rail; 33. Slider; 34. Moving bracket; 35. First gearbox; 36. Connecting rod; 37. First servo motor; 38. C-shaped plate; 39. Tension spring; 4. Cutting mechanism; 41. First cutting head; 42. Second cutting head; 5. Press Pattern mechanism; 51, wave-shaped cutter die; 52, wave-shaped cutter punch; 53, heightening block; 54, extension block; 55, rotating seat; 56, wave-shaped slot; 57, wave-shaped protrusion; 58, first strip slot; 59, second gear box; 510, second servo motor; 511, bending cutter die; 512, second strip slot; 6, step pressing mechanism; 61, lower L-shaped cutter die; 62, upper L-shaped cutter die; 7, arc pressing mechanism; 71, arc pressing die; 72, arc pressing punch; 73, L-shaped protrusion; 74, L-shaped groove. DETAILED DESCRIPTION

[0040] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0041] The present invention will be further described below with reference to the embodiments.

[0042] The terms “left,” “right,” “front,” “back,” “up,” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0043] Example 1: In some embodiments, please refer to Figures 1-10The utility model provides a kind of clamping spring continuous forming device, including frame 1, further include: rotary wire feeder 2 and multi-step processing device, the rotary wire feeder 2 is installed in frame 1 rear side, the multi-step processing device is installed in frame 1 middle side, the multi-step processing device includes: drive mechanism 3, cutting mechanism 4, embossing mechanism 5, pressure step mechanism 6 and pressure arc mechanism 7, eight the drive mechanism 3 is distributed in frame 1 middle side with equal interval circumferentially, the drive mechanism 3 is installed in frame 1 middle side, eight the drive mechanism 3 is sequentially marked as No.

[0044] Rotary wire feeder 2 is used for regularly quantitative delivery steel wire, and multi-step processing device processes steel wire, and the drive mechanism 3 of multi-step processing device is used to drive cutting mechanism 4, embossing mechanism 5, pressure step mechanism 6 and pressure arc mechanism 7 to move, and embossing mechanism 5 is used to wave-shapedly press steel wire, and then the steel wire is bent twice, to form U shape, and pressure arc mechanism 7 is used to arc-shapedly press U-shaped steel wire, and pressure step mechanism 6 is used to press step to U-shaped steel wire after arc-shapedly pressed, and finally cutting mechanism 4 is used to cut off processed steel wire, to form clamping spring.

[0045] The drive mechanism 3 includes: support frame 31, guide rail 32, sliding block 33, moving bracket 34, first gear box 35, connecting rod 36 and first servo motor 37, the support frame 31 is fixedly installed on the upper side of frame 1, two the guide rail 32 is fixedly installed on support frame 31, the sliding block 33 is slidably connected on guide rail 32, the moving bracket 34 is fixedly installed on sliding block 33, the first gear box 35 shell is fixedly installed on the end of support frame 31 away from the center of frame 1, one end of the connecting rod 36 is rotatably connected to the end of moving bracket 34 away from the center of frame 1 through pivot, the other end of the connecting rod 36 is eccentrically rotatably connected to the output end of first gear box 35 through pivot, the first servo motor 37 shell is fixedly installed on support frame 31, and the output shaft of the first servo motor 37 is fixedly connected to the input end of first gear box 35.

[0046] The output shaft of the first servo motor 37 of the driving mechanism 3 rotates to drive the input end of the first gear box 35 to rotate. The rotation of the input end of the first gear box 35 causes the output end of the first gear box 35 to rotate. The rotation of the output end of the first gear box 35 drives the connecting rod 36 to rotate and move at the same time. The connecting rod 36 moves toward the center of the frame 1 and drives the movable bracket 34 to move toward the center of the frame 1. The guide rail 32 and the slider 33 are used to limit the movable bracket 34.

[0047] The driving mechanism 3 also includes: a rebound component, which is installed on one end of the connecting rod 36 close to the movable bracket 34. The rebound component includes: a C-shaped plate 38 and a tension spring 39. The C-shaped plate 38 is rotatably connected to the rotating shaft on the side of the connecting rod 36 close to the movable bracket 34. One end of the tension spring 39 is fixedly installed at both ends of the C-shaped plate 38, and the other end of the tension spring 39 is fixedly installed on the outer shell of the first gear box 35.

[0048] The connecting rod 36 moves toward the center of the frame 1, driving the movable bracket 34 to move toward the center of the frame 1. The connecting rod 36 moves toward the center of the frame 1, driving the C-shaped plate 38 to move toward the center of the frame 1. The tension spring 39 is elastically deformed and stretched. After the processing is completed, the first servo motor 37 returns to its initial state. The elastically deformed tension spring 39 recovers and pulls the C-shaped plate 38 to its initial state. The C-shaped plate 38 moves to its initial state, driving the connecting rod 36 and the movable bracket 34 to move to their initial positions.

[0049] The wave cutter die concave die 51 is installed on the movable bracket 34 of the No. 7 driving mechanism 3 , and the wave cutter die convex die 52 is installed on the movable bracket 34 of the No. 3 driving mechanism 3 .

[0050] The movable bracket 34 of the No. 7 driving mechanism 3 moves to drive the wave cutter die 51 to move, and the movable bracket 34 of the No. 3 driving mechanism 3 moves to drive the wave cutter die 52 to move, and the wave cutter die 51 moves and the wave cutter die 52 moves closer to each other to press the front end of the steel wire into a wave shape.

[0051] A second gear box 59 is fixedly mounted on the movable bracket 34 of the fifth drive mechanism 3, and the rotating seat 55 is fixedly mounted on the output end of the second gear box 59. A second servo motor 510 is fixedly mounted on the lower outer shell of the second gear box 59, and the output shaft of the second servo motor 510 is fixedly connected to the input end of the second gear box 59. A bending cutter die 511 is fixedly mounted on the rotating seat 55, and a second strip-shaped slot 512 is provided on the middle side of the bending cutter die 511.

[0052] The second servo motor 510 output shaft rotates to drive the second gear box 59 input end to rotate, the second gear box 59 input end rotates to drive the second gear box 59 output end to rotate, and the second gear box 59 output end rotates to drive the bending die 511 to rotate, so as to bend the steel wire. After being bent twice, the steel wire becomes a U-shaped wire.

[0053] The arc pressing mechanism 7 comprises an arc pressing concave die 71 and an arc pressing convex die 72. The arc pressing concave die 71 is fixedly installed on the moving bracket 34 of the eighth driving mechanism 3, and the arc pressing convex die 72 is fixedly installed on the moving bracket 34 of the fourth driving mechanism 3. An L-shaped convex 73 is fixedly installed in the middle side of the arc pressing convex die 72, and an L-shaped groove 74 is formed in the middle side of the arc pressing concave die 71.

[0054] The moving bracket 34 of the eighth driving mechanism 3 moves to drive the arc pressing concave die 71 to move, and the moving bracket 34 of the fourth driving mechanism 3 moves to drive the arc pressing convex die 72 to move. The arc pressing convex die 72 and the arc pressing concave die 71 are close to each other to press the U-shaped end of the U-shaped steel wire into an arc shape.

[0055] The step pressing mechanism 6 comprises a lower L-shaped die 61 and an upper L-shaped die 62. The lower L-shaped die 61 is fixedly installed on the shell of the second gear box 59 through a bracket, and the upper L-shaped die 62 is fixedly installed on the moving bracket 34 of the first driving mechanism 3.

[0056] The moving bracket 34 of the first driving mechanism 3 moves to drive the upper L-shaped die 62 to move downward, and the upper L-shaped die 62 and the lower L-shaped die 61 are close to each other to press a step on one end of the U-shaped steel wire away from the arc-shaped end. Meanwhile, the moving bracket 34 of the third driving mechanism 3 moves to drive the wave-shaped die convex die 52 and the extension block 54 to move. The extension block 54 moves to the step position of the U-shaped steel wire, and the step position of the U-shaped steel wire is flattened through the lower rotating seat 55 and the extension block 54, so that the U-shaped steel wire will not be excessively raised. The arc-shaped end and the step end of the U-shaped steel wire are located on the same horizontal plane and remain horizontal.

[0057] The cutting mechanism 4 comprises a first cutting die head 41 and a second cutting die head 42. The first cutting die head 41 is fixedly installed on the moving bracket 34 of the sixth driving mechanism 3, and the second cutting die head 42 is fixedly installed on the moving bracket 34 of the second driving mechanism 3.

[0058] The moving bracket 34 of the sixth driving mechanism 3 moves to drive the first cutting die head 41 to move, and the moving bracket 34 of the second driving mechanism 3 moves to drive the second cutting die head 42 to move. The first cutting die head 41 and the second cutting die head 42 are close to each other to cut the processed steel wire, and the clamping spring is completed.

[0059] In some embodiments, as shown in FIG. 6, the arc pressing mechanism 7 comprises an arc pressing concave die 71 and an arc pressing convex die 72. Figures 1-10As shown, as a preferred embodiment of the present invention, the rotary wire feeding device 2 includes: a rotating frame 21, an electric chuck 22, a third servo motor 23, a main gear 24, a driving gear 25, a vertical bracket 26, a guide wheel 27 and a fourth servo motor 28. The rotating frame 21 is rotatably connected to the middle side of the frame 1, and a circular opening is opened in the middle side of the rotating frame 21. The fixed end of the electric chuck 22 is fixedly mounted on the rear side of the frame 1, the third servo motor 23 is fixedly mounted on the rear side of the frame 1, the main gear 24 is fixedly mounted on the output shaft of the third servo motor 23, the driving gear 25 is fixedly mounted on the rotating end of the electric chuck 22, the main gear 24 and the driving gear 25 are meshed with each other, the vertical bracket 26 is fixedly mounted on the rear side of the frame 1, the two guide wheels 27 are rotatably connected to the vertical bracket 26 through a rotating shaft, the fourth servo motor 28 is fixedly mounted on the vertical bracket 26, and the output end of the fourth servo motor 28 is fixedly connected to the rotating shaft of one of the guide wheels 27.

[0060] The steel wire is placed between the two guide wheels 27 of the rotating wire feeding device 2, and then the steel wire is moved forward through the electric chuck 22 and into the circular opening of the rotating frame 21. After the steel wire is placed, the output end of the fourth servo motor 28 rotates to drive the guide wheel 27 to rotate, and the rotation of the guide wheel 27 drives the steel wire forward a preset distance. The electric chuck 22 starts to clamp the steel wire, and the output shaft of the third servo motor 23 rotates to drive the main gear 24 to rotate. The rotation of the main gear 24 drives the driving gear 25 to rotate. The rotation of the driving gear 25 drives the electric chuck 22 to rotate. The rotation of the electric chuck 22 drives the steel wire to rotate, so that the steel wire can move back and forth and rotate on the rotating frame 21.

[0061] Embodiment 3: In some embodiments, as Figures 1-10 As shown, as a preferred embodiment of the present invention, a forming method of a continuous forming device for a retaining spring comprises the following steps:

[0062] Step 1: Place the steel wire between the two guide wheels 27, then move the steel wire forward through the electric chuck 22 and into the circular opening of the rotating frame 21. After the steel wire is placed, the output end of the fourth servo motor 28 rotates to drive the guide wheel 27 to rotate, and the guide wheel 27 rotates to drive the steel wire forward a preset distance;

[0063] Step 2: The movable bracket 34 of the No. 7 driving mechanism 3 moves to drive the wave cutter die 51 to move, and the movable bracket 34 of the No. 3 driving mechanism 3 moves to drive the wave cutter die 52 to move, and the wave cutter die 51 moves and the wave cutter die 52 moves closer to each other to press the front end of the steel wire into a wave shape;

[0064] Step 3: The steel wire continues to extend forward, the movable bracket 34 of the fifth driving mechanism 3 moves to drive the second gear box 59 to move, the output shaft of the second servo motor 510 rotates to drive the input end of the second gear box 59 to rotate, the input end of the second gear box 59 rotates to rotate the output end of the second gear box 59, the output end of the second gear box 59 rotates to drive the bending die 511 to rotate, and bend the steel wire for the first time. The steel wire continues to extend forward, and the bending die 511 rotates to bend the steel wire for the second time into a U shape;

[0065] Step 4: The steel wire is retracted, and the electric chuck 22 is started to clamp the steel wire and rotate it forty-five degrees. The movable bracket 34 of the No. 8 driving mechanism 3 moves to drive the arc pressing die 71 to move. The movable bracket 34 of the No. 4 driving mechanism 3 moves to drive the arc pressing punch 72 to move. The arc pressing punch 72 and the arc pressing die 71 move closer to each other to press the U-shaped end of the U-shaped steel wire into an arc shape.

[0066] Step 5: The steel wire continues to retract, and the upper L-shaped cutting die 62 moves downward, pressing the end of the U-shaped steel wire away from the U-shaped end to form a step. At the same time, the movable bracket 34 of the third driving mechanism 3 moves to drive the wave cutting die punch 52 and the extension block 54 to move. The extension block 54 moves to the U-shaped steel wire step position for leveling operation;

[0067] Step 6: The movable bracket 34 of the No. 6 driving mechanism 3 moves to drive the first cutting head 41 to move, and the movable bracket 34 of the No. 2 driving mechanism 3 moves to drive the second cutting head 42 to move. The first cutting head 41 and the second cutting head 42 approach each other to cut the processed steel wire, and the retaining spring is completed.

[0068] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A continuous forming device for a retaining spring, comprising a frame (1), characterized in that: Also includes: A rotary wire feeding device (2) and a multi-step processing device, wherein the rotary wire feeding device (2) is mounted on the rear side of a frame (1), and the multi-step processing device is mounted on the middle side of the frame (1). The multi-step processing device comprises: a driving mechanism (3), a cutting mechanism (4), an embossing mechanism (5), a step pressing mechanism (6), and an arc pressing mechanism (7). Eight driving mechanisms (3) are arranged in an evenly spaced circular array on the middle side of the frame (1). The driving mechanism (3) is mounted on the middle side of the frame (1). The eight driving mechanisms (3) are marked as driving mechanisms (3) numbered from one to eight in clockwise order from the top. The embossing mechanism (5) comprises: a wave cutter die (51), a wave cutter die (52), a heightening block (53), and a plurality of other components. 3), an extension block (54) and a rotating seat (55), the wave cutter die (51) is installed on the seventh drive mechanism (3), the wave cutter die (52) is installed on the third drive mechanism (3), the wave cutter die (51) is provided with a wave-shaped slot (56), the wave cutter die (52) is provided with a wave-shaped protrusion (57), the heightening block (53) is fixedly installed on the wave cutter die (52), the extension block (54) is fixedly installed on the end of the heightening block (53) away from the wave cutter die (52), the upper left side of the extension block (54) is provided with a first strip slot (58), and the rotating seat (55) is located above the fifth drive mechanism (3).

2. The continuous forming device for retaining springs according to claim 1, characterized in that: The driving mechanism (3) comprises: a support frame (31), a guide rail (32), a slider (33), a movable bracket (34), a first gear box (35), a connecting rod (36) and a first servo motor (37), wherein the support frame (31) is fixedly mounted on the upper side of the frame (1), the two guide rails (32) are fixedly mounted on the support frame (31), the slider (33) is slidably connected to the guide rails (32), the movable bracket (34) is fixedly mounted on the slider (33), the housing of the first gear box (35) is fixedly mounted on one end of the support frame (31) away from the center of the frame (1), one end of the connecting rod (36) is rotatably connected to one end of the movable bracket (34) away from the center of the frame (1) through a rotating shaft, and the other end of the connecting rod (36) is eccentrically rotatably connected to the output end of the first gear box (35) through a rotating shaft, the housing of the first servo motor (37) is fixedly mounted on the support frame (31), and the output shaft of the first servo motor (37) is fixedly connected to the input end of the first gear box (35).

3. The continuous forming device for retaining springs according to claim 2, characterized in that: The driving mechanism (3) further comprises a rebound component, which is mounted on one end of the connecting rod (36) close to the movable bracket (34).

4. The continuous forming device for retaining springs according to claim 3, characterized in that: The wave cutter die concave die (51) is fixedly mounted on the movable bracket (34) of the seventh drive mechanism (3), and the wave cutter die convex die (52) is fixedly mounted on the movable bracket (34) of the third drive mechanism (3).

5. The continuous forming device for retaining springs according to claim 4, characterized in that: A second gear box (59) is fixedly mounted on the movable bracket (34) of the fifth drive mechanism (3); the rotating seat (55) is fixedly mounted on the output end of the second gear box (59); a second servo motor (510) is fixedly mounted on the lower shell of the second gear box (59); the output shaft of the second servo motor (510) is fixedly connected to the input end of the second gear box (59); a bending die (511) is fixedly mounted on the rotating seat (55); and a second strip-shaped slot (512) is provided on the middle side of the bending die (511).

6. The continuous forming device for retaining springs according to claim 5, characterized in that: The arc pressing mechanism (7) comprises: an arc pressing die (71) and an arc pressing punch (72); the arc pressing die (71) is fixedly mounted on a movable bracket (34) of the eighth drive mechanism (3); the arc pressing punch (72) is fixedly mounted on a movable bracket (34) of the fourth drive mechanism (3); an L-shaped protrusion (73) is fixedly mounted on the middle side of the arc pressing punch (72); and an L-shaped groove (74) is provided on the middle side of the arc pressing die (71).

7. The continuous forming device for retaining springs according to claim 6, characterized in that: The step pressing mechanism (6) comprises: a lower L-shaped cutting die (61) and an upper L-shaped cutting die (62); the lower L-shaped cutting die (61) is fixedly mounted on the outer shell of the second gear box (59) via a bracket; and the upper L-shaped cutting die (62) is fixedly mounted on the movable bracket (34) of the first driving mechanism (3).

8. The continuous forming device for retaining springs according to claim 7, characterized in that: The cutting mechanism (4) comprises a first cutting head (41) and a second cutting head (42), wherein the first cutting head (41) is fixedly mounted on a movable bracket (34) of the sixth drive mechanism (3), and the second cutting head (42) is fixedly mounted on a movable bracket (34) of the second drive mechanism (3).

9. The continuous forming device for retaining springs according to claim 8, characterized in that: The rotary wire feeding device (2) comprises: a rotating frame (21), an electric chuck (22), a third servo motor (23), a main gear (24), a driving gear (25), a vertical bracket (26), a guide wheel (27) and a fourth servo motor (28), wherein the rotating frame (21) is rotatably connected to the middle side of the frame (1), a circular opening is provided on the middle side of the rotating frame (21), a fixed end of the electric chuck (22) is fixedly mounted on the rear side of the frame (1), the third servo motor (23) is fixedly mounted on the rear side of the frame (1), the main gear (24) is connected to the middle side of the frame (1), and the third servo motor (23) is fixedly mounted on the rear side of the frame (1). ) is fixedly mounted on the output shaft of the third servo motor (23), the driving gear (25) is fixedly mounted on the rotating end of the electric chuck (22), the main gear (24) and the driving gear (25) are meshed with each other, the vertical bracket (26) is fixedly mounted on the rear side of the frame (1), the two guide wheels (27) are rotatably connected to the vertical bracket (26) through a rotating shaft, the fourth servo motor (28) is fixedly mounted on the vertical bracket (26), and the output end of the fourth servo motor (28) is fixedly connected to the rotating shaft of one of the guide wheels (27).

10. A forming method of a continuous forming device for a circlip, used for the continuous forming device for a circlip according to claim 9, characterized in that: The following steps are involved: Step 1: Place the steel wire between the two guide wheels (27), and the output end of the fourth servo motor (28) rotates to drive the guide wheels (27) to rotate, and the rotation of the guide wheels (27) drives the steel wire to move forward a preset distance; Step 2: The movable bracket (34) of the No. 7 driving mechanism (3) moves to drive the wave cutter die (51) to move, and the movable bracket (34) of the No. 3 driving mechanism (3) moves to drive the wave cutter die (52) to move, thereby pressing the front end of the steel wire into a wave shape; Step 3: The steel wire continues to extend forward, the movable bracket (34) of the fifth drive mechanism (3) moves to drive the second gear box (59) to move, the output shaft of the second servo motor (510) rotates to drive the input end of the second gear box (59) to rotate, the input end of the second gear box (59) rotates to make the output end of the second gear box (59) rotate, the output end of the second gear box (59) rotates to drive the bending die (511) to rotate, and the steel wire is bent for the first time, the steel wire continues to extend forward, the bending die (511) rotates, and the steel wire is bent for the second time into a U shape; Step 4: The steel wire is retracted, the electric chuck (22) is started to clamp the steel wire and rotate it forty-five degrees, the movable bracket (34) of the eighth drive mechanism (3) moves to drive the arc pressing die (71) to move, and the movable bracket (34) of the fourth drive mechanism (3) moves to drive the arc pressing die (72) to move, pressing the U-shaped end of the U-shaped steel wire into an arc shape; Step 5: The steel wire continues to retract, and the upper L-shaped cutting die (62) moves downward, pressing the end of the U-shaped steel wire away from the U-shaped end out of the step. At the same time, the moving bracket (34) of the third driving mechanism (3) moves to drive the wave cutting die punch (52) and the extension block (54) to move, and the extension block (54) moves to the U-shaped steel wire step position for leveling operation; Step 6: The first cutting head (41) and the second cutting head (42) are brought close to each other to cut the processed steel wire, and the retaining spring is completed.

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