Winding forming equipment for large copper spring

Abstract

The invention relates to the technical field of spring winding forming, in particular to winding forming equipment for a large copper spring. The winding forming equipment for the large copper spring comprises a frame, a fixing base, a rotary disc, a mandrel, servo motors and the like, the fixing base is installed on the right side in the frame, the rotary disc is rotationally connected to the outer side of the fixing base, the servo motors are installed on the upper side and the lower side of the rotary disc respectively, and output shafts of the servo motors are connected with the mandrel through couplings. And the right ends of the mandrels are fixedly connected with mounting discs. A station exchange assembly composed of an exchange motor, a driving gear and a gear ring is matched with a double-station mandrel, the defects that traditional single-station shutdown waiting is achieved, and existing double stations have the positioning precision smaller than or equal to + / -0.1 degrees, meshing failure caused by misalignment is avoided, 180-degree switching only needs 3-5 seconds, the speed is greatly increased compared with hydraulic driving, parallel winding and discharging are achieved, and the production efficiency is improved. The production continuity and efficiency are improved, and the rotating speed fluctuation is reduced to guarantee the spring parameter consistency.

Description

Technical Field

[0001] This invention relates to the field of spring winding technology, and more particularly to a winding equipment for large copper springs. Background Technology

[0002] In the field of large copper spring winding processing, the copper blanks need to be formed in a red-hot state (which has both plasticity and rigidity at high temperatures), and the springs are large in size and the precision requirements of the helical parameters are high. Traditional winding forming equipment has significant technical limitations.

[0003] In existing single-station winding equipment, after winding one spring, the machine needs to be stopped and the formed spring needs to be manually unloaded before the blank is re-clamped and the processing can be restarted. During this process, the equipment is idle, and the production interruption time accounts for a high percentage, making it difficult to meet the efficiency requirements of mass production. At the same time, manual unloading requires contact with high-temperature workpieces, which is labor-intensive and poses safety hazards. Frequent start-stop operations can also easily cause fluctuations in the spindle speed, affecting the consistency of key parameters such as spring pitch.

[0004] Although some dual-station solutions attempt to switch stations via a rotary table, they generally have some drawbacks: the repeatability error of mechanical indexing mechanisms (such as Geneva wheels and cams) is > ±0.5°, which leads to misalignment between the mandrel and the traction system, and material biting failure is likely to occur in the initial stage of winding; the hydraulically driven turntable requires ≥10 seconds to complete a 180° station change, and the traction system is idle during unloading, making it impossible to achieve truly parallel winding-unloading operations. Summary of the Invention

[0005] In order to overcome the shortcomings mentioned in the background art, the present invention provides a winding and forming device for large copper springs.

[0006] A winding and forming equipment for large copper springs includes a frame, a fixed base, a turntable, a mounting plate, a mandrel, a servo motor, a slide cylinder, a clamping roller, a traction assembly, and a station changing assembly. The fixed base is installed on the right side inside the frame, and the turntable is rotatably connected to the outside of the fixed base. Servo motors are installed on the upper and lower sides of the turntable, and the output shafts of the servo motors are connected to the mandrels via couplings. The right end of each mandrel is fixedly connected to a mounting plate. Slide cylinders are fixedly installed on the lower side of the left side wall of the mounting plate, and clamping rollers are fixedly installed on the sliders of the slide cylinders. The traction assembly is provided on the fixed base, and the station changing assembly is provided on the turntable. The servo motors and slide cylinders are electrically connected to an external control system.

[0007] Optionally, the outer surface of the mandrel is provided with a hard chromium plating layer with a thickness of 0.15-0.2 mm.

[0008] Optionally, the outer circumferential surface of the clamping roller is provided as an arc-shaped groove adapted to the diameter of the copper blank, and the inner wall of the groove is inlaid with a wear-resistant polytetrafluoroethylene strip.

[0009] Optionally, the traction assembly comprises a guide cylinder, a traction block, a traction roller, a lead screw and a drive motor, the guide cylinder is fixedly connected to the center of the left side wall of the fixed seat, the left end of the guide cylinder is fixedly connected to the frame, guide grooves are formed in the front and back sides of the guide cylinder, the traction block is slidably connected to the guide cylinder through the guide grooves, the traction roller is rotatably connected to the rear end of the traction block, the lead screw is rotatably connected to the inside of the guide cylinder, the drive motor is fixedly connected to the right side wall of the frame, the output shaft of the drive motor penetrates through the fixed seat through a shaft coupling and is fixedly connected to the right end of the lead screw, and the drive motor is electrically connected to the external control system.

[0010] Optionally, the station switching assembly comprises a switching motor, a driving gear and a gear ring, the switching motor is installed on the front side of the left side wall of the rotating disc, the output shaft of the switching motor extends to the right side of the rotating disc through the rotating disc and is connected with the driving gear, the gear ring is fixedly connected to the outside of the right end of the fixed seat, the gear ring is meshed with the driving gear, and the switching motor is electrically connected to the external control system.

[0011] Optionally, the gear ring and the driving gear are made of 20CrMnTi alloy steel and are subjected to carburizing quenching treatment, and the meshing side clearance is less than or equal to 0.03 mm.

[0012] Optionally, the forming device further comprises a discharging assembly, the discharging assembly comprises a pulley, a flat belt, a moving block and a discharging block, the pulleys are rotatably connected to the front side of the guide cylinder in a symmetrical manner, the flat belt is tightly wound between the two pulleys, the traction block is connected to the upper right side of the flat belt, the moving block is fixedly sleeved to the lower left side of the flat belt, the moving block is slidably connected to the bottom of the guide cylinder through a sliding groove, and the discharging block is slidably connected to the inside of the moving block in a vertical direction.

[0013] Optionally, the discharging assembly further comprises a fixing frame, a horizontal rack, a rotating shaft, a transmission gear, a vertical rack and a compression spring, the fixing frame is fixedly connected to the bottom of the guide cylinder in a symmetrical manner, the horizontal racks are connected to the fixing frame in a symmetrical manner, the vertical rack is connected to the left side of the discharging block, the rotating shaft is rotatably connected to the lower part of the moving block, three transmission gears are fixedly connected to the rotating shaft in a spaced manner, the transmission gears at the front and back sides are in meshing transmission with the corresponding horizontal racks, the transmission gear at the middle part is in meshing transmission with the vertical rack, and the two compression springs are connected between the top end of the discharging block and the inside of the moving block.

[0014] Optionally, the forming device further comprises a cleaning assembly, the cleaning assembly comprises a mounting block and an arc-shaped scraping ring, the mounting blocks are fixedly connected to the front and back sides of the right side of the moving block, the arc-shaped scraping ring is rotatably connected to the mounting blocks through a shaft pin, the curvature of the arc surface of the arc-shaped scraping ring is consistent with the curvature of the outer circumferential surface of the mandrel, and the arc-shaped scraping ring is in close cooperation with the mandrel.

[0015] Optionally, the cleaning assembly further comprises a V-shaped rod, a moving rack, a rotating gear, a tension spring and a pulley, the V-shaped rod is installed on the right side of the discharging block, the moving rack is slidably connected to the top of the mounting block, the tension spring is connected between the front and rear moving racks, the pulleys are rotatably connected to the ends of the moving racks close to each other, the pulley surfaces are in rolling contact with the inclined sections of the V-shaped rod, the rotating gear is connected to the right end of the pin shaft of the arc-shaped scraping ring, and the rotating gear is in meshing transmission with the corresponding moving rack.

[0016] The beneficial effects of the present application are: 1. By exchanging the motor, the driving gear and the gear ring to form a station exchange assembly, and cooperating with the double-station mandrel, the traditional single-station shutdown waiting and the existing double-station defects are solved: the positioning accuracy is ≤±0.1°, the occlusion failure caused by misalignment is avoided, the 180° switching only needs 3-5 seconds, the speed is greatly increased compared with hydraulic driving, and the winding and discharging are parallel, the production continuity and efficiency are improved, and the speed fluctuation is reduced to ensure the consistency of spring parameters.

[0017] 2. The servo motor drives the mandrel to rotate accurately, the sliding table air cylinder drives the clamping roller to ensure that the blank is initially bitten stably, the lead screw in the traction assembly is linked with the driving motor, the mandrel speed and the traction displacement are strictly matched, and the consistency of spring pitch and spiral parameters is ensured.

[0018] 3. The discharging assembly drives the moving block through the flat belt linkage traction block, cooperates with the transmission gear and the horizontal rack to drive the discharging block to stretch and translate, the sharp cone structure accurately pushes the spring away from the mandrel, replaces manual discharging, reduces labor intensity and improves operation safety.

[0019] 4. In the cleaning assembly, the arc-shaped scraping ring is linked with the V-shaped rod, the moving rack and the rotating gear, the scraping ring is closed and fitted with the mandrel during discharging, metal scraps and crystalline substances are scraped off, residual impurities are avoided to affect the subsequent winding accuracy, and the service life of the mandrel is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a three-dimensional structure schematic diagram of the present application.

[0021] Figure 2 It is a three-dimensional structure schematic diagram of the mandrel, the mounting disc and the servo motor and other components of the present application.

[0022] Figure 3 It is a three-dimensional structure schematic diagram of the guide cylinder, the traction block and the traction roller and other components of the present application.

[0023] Figure 4 It is a three-dimensional structure schematic diagram of the exchange motor, the fixed seat and the clamping roller and other components of the present application.

[0024] Figure 5 It is a three-dimensional structure schematic diagram of the exchange motor, the driving gear and the gear ring and other components of the present application.

[0025] Figure 6 Figure 1 is a schematic diagram of the three-dimensional structure of the fixed seat, rotating disc and guide cylinder of the present application.

[0026] Figure 7 Figure 2 is a schematic diagram of the three-dimensional structure of the lead screw, driving motor and traction roller of the present application.

[0027] Figure 8 Figure 3 is a schematic diagram of the three-dimensional structure of the pulley, flat belt and moving block of the present application.

[0028] Figure 9 Figure 4 is a schematic diagram of the three-dimensional structure of the moving block, horizontal rack and rotating shaft of the present application.

[0029] Figure 10 Figure 5 is a schematic diagram of the three-dimensional structure of the unloading block, vertical rack and compression spring of the present application.

[0030] Figure 11 Figure 6 is a schematic diagram of the three-dimensional structure of the V-shaped rod, moving rack and rotating gear of the present application.

[0031] Figure 12 Figure 7 is a schematic diagram of the three-dimensional structure of the pulley, mounting block and arc-shaped scraping ring of the present application.

[0032] Markings in the drawings: 1: frame, 102: fixed seat, 103: rotating disc, 104: mounting disc, 105: mandrel, 106: servo motor, 107: sliding table air cylinder, 108: clamping roller, 201: guide cylinder, 202: traction block, 203: traction roller, 204: lead screw, 205: driving motor, 301: switching motor, 302: driving gear, 303: gear ring, 401: pulley, 402: flat belt, 403: moving block, 404: unloading block, 501: fixed frame, 502: horizontal rack, 503: rotating shaft, 504: transmission gear, 505: vertical rack, 506: compression spring, 601: mounting block, 602: arc-shaped scraping ring, 701: V-shaped rod, 702: moving rack, 703: rotating gear, 704: tension spring, 705: pulley. DETAILED DESCRIPTION

[0033] The embodiments of the present application will be described below with reference to the accompanying drawings.

[0034] Example 1: A large copper material spring winding forming device, as shown in Figures 1-7As shown, including the frame 1, fixed seat 102, rotating disc 103, mounting disc 104, mandrel 105, servo motor 106, slide cylinder 107, clamping roller 108, traction assembly and station replacement assembly, the frame 1 inside right side is provided with fixed seat 102, the outer side of fixed seat 102 is rotatably connected with rotating disc 103 through bearing, the upper and lower sides of rotating disc 103 are bolted with servo motor 106 respectively, the output shaft of servo motor 106 is connected with mandrel 105 for coiling spring through shaft coupling, the outer surface of mandrel 105 is provided with hard chromium plating layer with thickness of 0.15-0.2 mm, which can reduce copper adhesion rate, the right end of mandrel 105 is fixedly connected with mounting disc 104, the lower side of left side wall of mounting disc 104 is fixedly provided with slide cylinder 107, the sliding block of slide cylinder 107 is fixedly provided with clamping roller 108 for pressing copper blank, the outer periphery of clamping roller 108 is provided with arc-shaped groove matched with the diameter of copper blank, the inner wall of groove is inlaid with polytetrafluoroethylene wear-resistant strip, the arc-shaped groove increases the contact area with red-hot copper, avoids local crushing, the polytetrafluoroethylene strip is high-temperature-resistant and has stable friction coefficient, which can reliably clamp blank and reduce scratch on the surface of blank, the fixed seat 102 is provided with traction assembly for traction of copper blank, the rotating disc 103 is provided with station replacement assembly for switching the station of mandrel 105, and the servo motor 106 and slide cylinder 107 are electrically connected with external control system.

[0035] As shown in Figure 2 , Figure 3 , Figure 6 and Figure 7 , the traction assembly comprises a guide cylinder 201, a traction block 202, a traction roller 203, a lead screw 204 and a drive motor 205, the guide cylinder 201 for guiding and bearing traction components is fixedly arranged at the center position of the left side wall of the fixed seat 102, the left end of the guide cylinder 201 is fixedly connected with the frame 1, guide grooves are formed in the front and rear sides of the guide cylinder 201, the traction block 202 is slidably connected with the guide cylinder 201 through the guide grooves, the traction roller 203 for conveying copper blank is rotatably connected with the rear end of the traction block 202 through bearing, the lead screw 204 is rotatably connected with the inside of the guide cylinder 201 through bearing, the drive motor 205 is bolted with the right side wall of the frame 1, the output shaft of the drive motor 205 penetrates through the fixed seat 102 through shaft coupling and is fixedly connected with the right end of the lead screw 204, and the drive motor 205 is electrically connected with the external control system.

[0036] As shown in Figure 4 and Figure 5As shown, the station switching assembly comprises a switching motor 301, a driving gear 302 and a gear ring 303. The switching motor 301 is bolted to the front side of the left side wall of the rotating disc 103. The output shaft of the switching motor 301 extends to the right side of the rotating disc 103 and is connected with the driving gear 302 through a key. The gear ring 303 is fixedly connected to the outer side of the right end of the fixed seat 102. The gear ring 303 and the driving gear 302 are in meshing engagement. The gear ring 303 and the driving gear 302 are made of 20CrMnTi alloy steel and are subjected to carburizing quenching treatment to improve the surface hardness. The meshing side gap is less than or equal to 0.03 mm. The fatigue strength and the station switching life are improved. The positioning drift caused by the wear of the indexing system is eliminated. The switching motor 301 is electrically connected with an external control system. The driving gear 302 is driven to rotate by the switching motor 301. Under the meshing effect of the gear ring 303, the driving gear 302, the switching motor 301 and the rotating disc 103 will rotate circumferentially along the axis of the fixed seat 102. After rotating by 180 degrees, the core shafts 105 of the upper and lower stations complete the station switching.

[0037] When the copper material spring is wound, the feeding mechanism (such as the clamping conveying device) pushes the red-hot copper material blank from the rear to the front to the traction roller 203 and continues to be supported at the clamping roller 108 of the upper work station. At this time, the control system drives the sliding table cylinder 107 of the work station to move the clamping roller 108 upward, and the head of the copper material blank is pressed and positioned to tightly fit the outer peripheral wall of the upper work station mandrel 105, so as to ensure the stability of the initial stage of winding. Then the control system drives the servo motor 106 of the upper work station, and the output shaft of the servo motor 106 rotates to drive the upper work station mandrel 105 to rotate. The mandrel 105 drives the installation disc 104, the sliding table cylinder 107 and the clamping roller 108 to rotate synchronously. The clamping roller 108 limits the head of the copper material blank to remain in place, and the mandrel 105 continuously rotates at a preset speed to drive the free end of the copper material blank to curl around its axis, thereby forming a spiral spring ring outside the mandrel 105. At the same time, the control system starts the driving motor 205, and the output shaft of the driving motor 205 rotates to drive the lead screw 204 to rotate, and the lead screw 204 drives the traction block 202 and the traction roller 203 to move horizontally along the guide groove of the guide cylinder 201. The movable end of the copper material blank translates to the left side, and the translation speed is strictly matched with the rotation speed of the mandrel 105. It is ensured that the mandrel 105 rotates one revolution, and the horizontal displacement amount of the traction assembly is equal to the design pitch of the spring, so as to ensure the pitch accuracy of the spring ring. The copper material blank is continuously conveyed by the traction roller 203 to ensure the continuous supply of the copper material blank during the winding process. Until the copper material blank is completed, the wound spring is temporarily left on the upper work station mandrel 105, and the traction block 202 and the traction roller 203 continue to translate to the left to the limit position and stop. At this time, the control system drives the switching motor 301 to start, and the output shaft of the switching motor 301 drives the driving gear 302 to rotate. Through the meshing transmission of the driving gear 302 and the gear ring 303, the driving gear 302, the switching motor 301 and the rotating disc 103 are driven to rotate around the axis of the fixed seat 102, thereby driving the installation disc 104 and the mandrels 105 of the two work stations to rotate synchronously. After rotating 180 degrees, the mandrels 105 of the upper and lower work stations complete the work station switching. Then the control system controls the sliding table cylinder 107 located in the lower work station at this time to drive the clamping roller 108 to reset, thereby releasing the limitation of the head of the spring. Then the control driving motor 205 is reversely operated, and the traction block 202 and the traction roller 203 are moved to the right side to reset through the lead screw 204. The above operation can be repeated to continue the spring processing on the mandrel 105 in the upper work station at this time. At this time, the formed spring on the mandrel 105 in the lower work station can be translated to the left along the mandrel 105 by the operator through the unloading tool to be unloaded. Through the switching of the upper and lower work stations, the orderly connection of the spring winding and unloading processes can be realized, so as to achieve continuous production.

[0038] Example 2: Based on example 1, as Figure 8 , Figure 9 andFigure 10 As shown, the forming device further comprises a discharging assembly, the discharging assembly comprises a belt pulley 401, a flat belt 402, a moving block 403 and a discharging block 404, the guide cylinder 201 is rotatably connected with the belt pulley 401 through deep groove ball bearings on the front side and left and right sides, the flat belt 402 is tightly wound between the two belt pulleys 401, the traction block 202 is connected with the upper right side of the flat belt 402, the lower left side of the flat belt 402 is fixedly sleeved with the moving block 403, the moving block 403 is slidably connected with the bottom of the guide cylinder 201 through a sliding groove, the moving block 403 is slidably connected with the discharging block 404 on the inner side in the vertical direction, the bottom end of the discharging block 404 is a sharp cone structure, which is beneficial to the discharging of the spring.

[0039] As shown in Figure 8 , Figure 9 and Figure 10 , the discharging assembly further comprises a fixed frame 501, a horizontal rack 502, a rotating shaft 503, a transmission gear 504, a vertical rack 505 and a compression spring 506, the fixed frame 501 is bolted on the bottom of the guide cylinder 201, the horizontal rack 502 is symmetrically connected on the front and back of the fixed frame 501, the vertical rack 505 is fixedly connected to the left side of the discharging block 404 along the height direction, the rotating shaft 503 is rotatably connected to the inner lower part of the moving block 403 through a bearing, three transmission gears 504 are fixedly arranged on the rotating shaft 503 along the axial direction, the transmission gears 504 on the front and back sides are respectively in meshing transmission with the horizontal rack 502 on the corresponding side, the transmission gear 504 in the middle is in meshing transmission with the vertical rack 505, two compression springs 506 are connected between the top end of the discharging block 404 and the inner part of the moving block 403, the compression springs 506 are in a pre-compressed state in the initial state, providing a downward pre-tightening force for the discharging block 404.

[0040] When the traction block 202 drives the traction roller 203 to translate left to traction the copper material blank for spring winding, the traction block 202 synchronously drives the flat belt 402 to transmit along the pulley 401, thereby driving the pulley 401 to rotate, the transmission of the flat belt 402 drives the moving block 403 and the unloading block 404 on the left side of the lower section to synchronously translate right, at this time, the transmission gears 504 on the front and back sides of the moving block 403 are engaged with the horizontal rack 502 on the left side of the fixed frame 501, under the action of the tooth surface of the horizontal rack 502, the transmission gears 504 on the front and back sides are forced to rotate, thereby driving the rotating shaft 503 and the middle transmission gear 504 to synchronously rotate, the middle transmission gear 504 drives the vertical rack 505 and the unloading block 404 to translate down through the engagement with the vertical rack 505, the compression spring 506 is gradually elastically reset from the initial pre-compression state, when the traction block 202 and the traction roller 203 translate to the left limit position, the transmission gears 504 on the front and back sides of the moving block 403 are in the engagement state with the horizontal rack 502 on the right side of the fixed frame 501, under the action of the reverse tooth surface of the right side horizontal rack 502, the transmission gears 504 are forced to rotate reversely, the middle transmission gear 504 is reversely driven through the rotating shaft 503, thereby driving the vertical rack 505 and the unloading block 404 to translate up to be retracted, the compression spring 506 is compressed to store energy again, at this time, the upper work position mandrel 105 completes spring winding and enters the work position exchange stage, when the upper and lower work position mandrels 105 complete 180-degree exchange, the formed spring on the mandrel 105 in the lower work position needs to be unloaded, at this time, the control system first drives the slide table air cylinder 107 in the lower work position to drive the clamping roller 108 to reset, thereby releasing the limitation on the formed spring, then the traction block 202 and the traction roller 203 translate right to reset, through the reverse transmission of the flat belt 402, the moving block 403 and the unloading block 404 are driven to translate left, during the moving process, the transmission gears 504 are engaged with the horizontal rack 502 again to drive the unloading block 404 to translate down to extend, the sharp cone structure of the unloading block 404 is inserted into the helical gap of the formed spring, as the moving block 403 continuously translates left, the unloading block 404 synchronously pushes the formed spring to move left along the mandrel 105 in the axial direction, the elastic force of the compression spring 506 ensures that the unloading block 404 and the mandrel 105 wall surface maintain the abutting state, until the formed spring is completely pushed away from the mandrel 105, thereby realizing the automatic unloading of the spring.

[0041] As Figure 8 , Figure 9 , Figure 11 and Figure 12As shown, the forming device further comprises a cleaning assembly, the cleaning assembly comprising a mounting block 601, an arc-shaped scraping ring 602, a V-shaped rod 701, a moving rack 702, a rotating gear 703, a tension spring 704 and a pulley 705, the front and rear sides of the right side surface of the moving block 403 are fixedly connected with the mounting block 601, the mounting block 601 is rotatably connected with the arc-shaped scraping ring 602 through a shaft pin, the curvature of the arc surface of the arc-shaped scraping ring 602 is consistent with the curvature of the outer peripheral surface of the mandrel 105, forming a close fit, and a wear-resistant scraping edge is arranged at the arc surface thereof for removing the attachments on the surface of the mandrel 105, the V-shaped rod 701 is bolted to the right side surface of the discharging block 404, the moving rack 702 is slidably connected to the top of the mounting block 601, the tension spring 704 is connected between the front and rear moving racks 702, the ends of the front and rear moving racks 702 close to each other are rotatably connected with the pulley 705 through an axle, the pulley 705 is in rolling contact with the front and rear inclined segments of the V-shaped rod 701, the right end of the shaft pin of the arc-shaped scraping ring 602 is connected with the rotating gear 703 through a key, and the rotating gear 703 is in meshing transmission with the moving rack 702 on the corresponding side.

[0042] When the discharging block 404 is in the right side position and is about to perform the spring discharging action, the discharging block 404 is translated leftward under the driving of the moving block 403 and is extended downward under the meshing action of the transmission gear 504 and the horizontal rack 502, in this process, the discharging block 404 synchronously drives the V-shaped rod 701 to move downward, the front and rear inclined segments of the V-shaped rod 701 apply a pushing force to the two sides through the rolling contact with the pulley 705, forcing the pulley 705 to drive the moving rack 702 to move away from the mounting block 601 on the front and rear sides synchronously, the tension spring 704 is stretched to store energy, the moving rack 702 drives the rotating gear 703 and the shaft pin to rotate synchronously through the meshing transmission, and then drives the arc-shaped scraping ring 602 to turn and unfold downward, the front and rear arc-shaped scraping rings 602 are in abutment to form a closed annular structure adapted to the mandrel 105, and the wear-resistant scraping edges of the inner arc surfaces thereof closely fit the outer peripheral surface of the mandrel 105, in the process of the leftward translation of the discharging block 404 for pushing the spring to discharge, the closed arc-shaped scraping ring 602 moves synchronously with the moving block 403, and the wear-resistant scraping edges thereof completely scrape off the metal scraps, scales and crystalline attachments remaining on the surface of the mandrel 105, realizing the online cleaning of the mandrel 105 and ensuring the size accuracy of the subsequent spring winding, when the discharging block 404 completes the discharging and moves to the left limit position, and then resets upward, the V-shaped rod 701 moves upward synchronously with the discharging block 404, the inclined segments thereof are out of contact with the pulley 705, the tension spring 704 releases the elastic potential energy and pulls the front and rear moving racks 702 to reset close to each other, drives the rotating gear 703 to rotate reversely through the meshing transmission, and then drives the arc-shaped scraping ring 602 to turn and fold upward.

Claims

1. A large copper material spring winding forming apparatus, characterized by: The utility model relates to a copper material blank clamping device, including frame (1), fixed seat (102), carousel (103), installation disc (104), mandrel (105), servo motor (106), sliding table cylinder (107), clamping roller (108), traction assembly and station replacement assembly, the right side inside frame (1) is equipped with fixed seat (102), fixed seat (102) outside rotation is connected with carousel (103), carousel (103) upper side and lower side are equipped with servo motor (106) respectively, the output shaft of servo motor (106) is connected with mandrel (105) through the shaft coupling, and mandrel (105) right end is fixedly connected with installation disc (104), and the left side wall of installation disc (104) is equipped with sliding table cylinder (107) below, and the sliding block of sliding table cylinder (107) is equipped with clamping roller (108) firmly, and fixed seat (102) is equipped with traction assembly, and carousel (103) is equipped with station replacement assembly, and servo motor (106) and sliding table cylinder (107) are electrically connected with outside control system.

2. A large copper spring coiling and forming apparatus according to claim 1, characterized in that: The outer surface of the mandrel (105) is provided with a hard chromium plating layer with a thickness of 0.15-0.2 mm.

3. A large copper spring coiling and forming apparatus according to claim 1, wherein: The outer circumferential surface of the clamping roller (108) is provided with an arc-shaped groove matching the diameter of the copper material blank, and the inner wall of the groove is embedded with a polytetrafluoroethylene wear-resistant strip.

4. A large copper spring coiling and forming apparatus according to claim 1, wherein: The traction assembly comprises a guide cylinder (201), a traction block (202), a traction roller (203), a lead screw (204) and a drive motor (205), the left side wall of the fixed seat (102) is fixedly provided with the guide cylinder (201), the left end of the guide cylinder (201) is fixedly connected with the frame (1), guide grooves are formed in the front and back sides of the guide cylinder (201), the traction block (202) is slidably connected with the guide cylinder (201) through the guide grooves, the rear end of the traction block (202) is rotatably connected with the traction roller (203), the lead screw (204) is rotatably connected with the inside of the guide cylinder (201), the right side wall of the frame (1) is fixedly provided with the drive motor (205), the output shaft of the drive motor (205) penetrates through the fixed seat (102) and is fixedly connected with the right end of the lead screw (204) through a shaft coupling, and the drive motor (205) is electrically connected with the external control system.

5. A large copper spring coiling and forming apparatus according to claim 1, wherein: The station replacement assembly comprises a replacement motor (301), a driving gear (302) and a gear ring (303), the front side of the left side wall of the carousel (103) is provided with the replacement motor (301), the output shaft of the replacement motor (301) extends to the right side of the carousel (103) and is connected with the driving gear (302), the right end of the fixed seat (102) is fixedly connected with the gear ring (303) outside, the gear ring (303) is engaged with the driving gear (302), and the replacement motor (301) is electrically connected with the external control system.

6. A large copper spring coiling and forming apparatus according to claim 5, wherein: The gear ring (303) and the driving gear (302) are made of 20CrMnTi alloy steel and are subjected to carburizing quenching treatment, and the meshing backlash is less than or equal to 0.03 mm.

7. A large copper spring coiling and forming apparatus according to claim 4, wherein: The forming device further comprises a discharging assembly, the discharging assembly comprises a pulley (401), a flat belt (402), a moving block (403) and a discharging block (404), the pulley (401) is symmetrically and rotatably connected to the front side of the guide cylinder (201), the flat belt (402) is tightly wound between the two pulleys (401), the traction block (202) is connected to the right side of the upper section of the flat belt (402), the lower left side of the flat belt (402) is fixedly sleeved with the moving block (403), the moving block (403) is slidably connected with the bottom of the guide cylinder (201) through a sliding groove, and the discharging block (404) is slidably connected to the inner side of the moving block (403) in the vertical direction.

8. A large copper spring coiling and forming apparatus according to claim 7, wherein: The discharging assembly further comprises a fixed frame (501), a horizontal rack (502), a rotating shaft (503), a transmission gear (504), a vertical rack (505) and a compression spring (506), the fixed frame (501) is symmetrically and fixedly connected to the bottom of the guide cylinder (201), the horizontal rack (502) is symmetrically connected to the fixed frame (501), the vertical rack (505) is connected to the left side of the discharging block (404), the rotating shaft (503) is rotatably connected to the inner lower part of the moving block (403), three transmission gears (504) are fixedly arranged on the rotating shaft (503) at intervals, the transmission gears (504) at the front and back sides are in meshing transmission with the horizontal racks (502) on the corresponding sides, and the transmission gear (504) in the middle is in meshing transmission with the vertical rack (505).

9. A large copper spring coiling and forming apparatus according to claim 7, wherein: The forming device further comprises a cleaning assembly, the cleaning assembly comprises a mounting block (601) and an arc-shaped scraping ring (602), the mounting block (601) is fixedly connected to the front and back sides of the right side of the moving block (403), the arc-shaped scraping ring (602) is rotatably connected to the mounting block (601) through a shaft pin, the curvature of the arc surface of the arc-shaped scraping ring (602) is consistent with the curvature of the outer circumferential surface of the mandrel (105), and the arc-shaped scraping ring (602) is in close cooperation with the mandrel (105).

10. A large copper spring coiling and forming apparatus according to claim 9, wherein: The cleaning assembly further comprises a V-shaped rod (701), a moving rack (702), a rotating gear (703), a tension spring (704) and a pulley (705), the V-shaped rod (701) is mounted on the right side of the discharging block (404), the moving rack (702) is slidably connected to the top of the mounting block (601), the tension spring (704) is connected between the two moving racks (702), the pulley (705) is rotatably connected to one end of each of the two moving racks (702) that are close to each other, the wheel surface of the pulley (705) is in rolling contact with the inclined section of the V-shaped rod (701), the rotating gear (703) is connected to the right end of the shaft pin of the arc-shaped scraping ring (602), and the rotating gear (703) is in meshing transmission with the moving rack (702) on the corresponding side.

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