A pin bending device for ceramic varistor processing

Abstract

The application discloses a pin bending device for ceramic pressure resistor processing and relates to the technical field of ceramic pressure resistor bending. The shell is provided with a feeding assembly on one side of the shell, which is used for conveying the pressure resistor body fixedly connected on one side of the fixing belt; the shell is provided with a bending assembly on one side of the shell, which is used for processing the pin of the pressure resistor body; and the shell is provided with a cutting assembly on one side of the shell, which is used for separating the bent pressure resistor body from the fixing belt. In the application, the feeding assembly and the guide limiting structure are arranged, the transmission belt outer wall protruding block is engaged with the fixing belt through hole, the transmission belt feeding is driven, compared with the conventional friction transmission, the transmission belt slip and the walking deviation can be effectively avoided, the guide frame bottom through groove is arranged, the pressure resistor pin is avoided, the pin is prevented from being extruded and scraped and deformed and damaged in the conveying process, and the initial shape of the pin is ensured to be straight and intact.

Description

Technical Field

[0001] This invention relates to the field of ceramic varistor bending technology, and more specifically, to a lead bending device for processing ceramic varistors. Background Technology

[0002] As a core electronic component in the field of circuit overvoltage protection, ceramic varistors are widely used in surge protection circuits of various home appliances, industrial control and communication equipment. Pin bending is a key process in its subsequent packaging and processing. The angle accuracy and forming consistency of pin bending directly affect the efficiency and reliability of subsequent circuit board component soldering.

[0003] Currently, the bending of varistor leads in the industry largely relies on manual labor using simple fixtures. This is not only inefficient and labor-intensive, but also results in significant fluctuations in bending angles due to manual operation, making it difficult to consistently guarantee product yield. While semi-automatic bending equipment has been gradually introduced, it generally employs a friction-type conveyor system, which is prone to slippage and deviation during feeding. Furthermore, the conveyor channel lacks a robust limit protection structure, easily causing lead scratches, deformation, and misalignment, making it difficult to ensure the resistor body accurately reaches the processing station and failing to meet the demands of high-volume, high-precision continuous production. In addition, most existing lead bending devices are relatively simple, only performing the lead bending process. The bent varistor remains integrated with the connecting strip, requiring an additional lead cutting and separation process, lengthening the processing flow, increasing labor and equipment costs, and failing to meet the processing requirements of modern large-scale electronic component production. Therefore, there is an urgent need for a lead bending device for ceramic varistor processing to solve the above problems. Summary of the Invention

[0004] In view of the problems in related technologies, the present invention proposes a lead bending device for processing ceramic varistors to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] The technical solution of this invention is implemented as follows: A lead bending device for processing ceramic varistors includes a housing. One side of the housing is provided with a feeding assembly for conveying a varistor body fixedly connected to one side of a fixing strip. The other side of the housing is provided with a bending assembly for processing the leads of the varistor body and a cutting assembly for separating the bent varistor body from the fixing strip. One outer wall of the housing is provided with a reciprocating assembly for providing power to the bending assembly and the cutting assembly; One side of the cutting component is provided with a pushing component for improving the material removal efficiency of the varistor body after bending.

[0006] Preferably, the feeding assembly includes a second motor fixedly connected to the outer wall of one side of the housing. A rotating rod is fixedly connected to the output end of the second motor. A drive wheel is fixedly connected to one end of the rotating rod extending to the outside of the other side of the housing. A drive belt is drivenly connected to the outer circumference of the drive wheel. A driven wheel is drivenly connected to the drive wheel via the drive belt. Equally spaced protrusions are fixedly connected to one side of the outer wall of the drive belt. Equally spaced through holes are formed on the outer wall of the fixed belt. The protrusions on the outer wall of the drive belt engage with the through holes on one side of the fixed belt to ensure fixation. For the stability of the belt drive, a guide frame for guiding the fixed belt is fixedly connected to one outer wall of the housing. A through slot is opened at the bottom of the guide frame, and the pins of the varistor body are located above the through slot. A first guide plate for limiting the fixed belt is fixedly connected to one inner wall of the guide frame. The distance between the first guide plate and one inner wall of the guide frame gradually decreases. A second guide plate is fixedly connected to one inner wall of the guide frame. One outer wall of the second guide plate covers the top outer wall of the varistor body for transmission and limiting.

[0007] Preferably, the reciprocating assembly includes a fixed column fixedly connected to one outer wall of the housing, a telescopic rod fixedly connected to one end of the fixed column away from the housing, a disk fixedly connected to the output end of the telescopic rod, a fixed seat fixedly connected to one outer wall of the disk, a through elliptical groove formed on the top outer wall of the fixed seat, a roller slidably connected inside the elliptical groove, a crank rotatably connected to the bottom end of the roller, a first rotating column fixedly connected to the other end of the crank, a connecting rod fixedly connected to one outer wall of the fixed seat, the connecting rod having a dovetail-shaped cross-section, a reinforcing column fixedly connected to one outer wall of the housing, a slide fixedly connected to the top end of the reinforcing column, and the connecting rod slidably connected to the slide.

[0008] Preferably, the bending assembly includes a first connecting block fixedly connected to one end of the connecting rod, a bending plate for stamping and bending the pins of the varistor body is fixedly connected to one side of the outer wall of the first connecting block, and a bending seat for bending and supporting the pins of the varistor body is fixedly connected to one side of the outer wall of the housing.

[0009] Preferably, the cutting assembly includes a second connecting block fixedly connected to one end of another connecting rod, a cutting blade fixedly connected to one side of the outer wall of the second connecting block, a cutting seat fixedly connected to one side of the outer wall of the housing, and a cutting groove for cooperating with the cutting blade on one side of the outer wall of the cutting seat.

[0010] Preferably, a support plate is fixedly connected to one side of the outer wall of the housing, and a collection hopper for collecting the bent varistor body is placed on the top of the support plate.

[0011] Preferably, a first motor is fixedly connected to one outer wall of the housing, a third rotating column is fixedly connected to the output end of the first motor, a first pulley is fixedly connected to the outer circumference of the third rotating column, the first pulley is fixedly connected to the first rotating column, a belt is driven to the outer circumference of the first pulley, a second pulley is driven to the first pulley via the belt, and the second pulley is fixedly connected to another first rotating column.

[0012] Preferably, a toothed plate is fixedly connected to one side of the outer wall of the connecting rod that is fixedly connected to the second connecting block, and a groove is provided on one side of the outer wall of the slide to facilitate the stable movement of the toothed plate. A gear disk is meshed on one side of the outer wall of the toothed plate, a rotating shaft is fixedly connected to the inner circumference of the gear disk, a worm is fixedly connected to the outer circumference of the rotating shaft, a worm wheel is meshed on the outer circumference of the worm, and a fixed cylinder for ensuring the stable rotation of the rotating shaft is fixedly connected to one side of the outer wall of the housing.

[0013] Preferably, a second rotating column is fixedly connected to the inner circumference of the worm gear, a first bevel gear is fixedly connected to the outer circumference of the second rotating column, the second bevel gear meshes with the outer circumference of the first bevel gear, an extension plate is fixedly connected to one side of the outer wall of the cut-off seat, a vertical plate is fixedly connected to the outer circumference of the fixed cylinder, and the two ends of the second rotating column are rotatably connected to the extension plate and the vertical plate, respectively.

[0014] Preferably, the pushing assembly includes a fourth rotating column rotatably connected to the inner wall of the cut-off seat, the fourth rotating column being fixedly connected to the second bevel gear, a sleeve being fixedly connected to the outer circumferential wall of the fourth rotating column, and elastic rods evenly distributed in a circular pattern being fixedly connected to the outer circumferential wall of the sleeve, one end of the elastic rods abutting against one side outer wall of the varistor body.

[0015] The beneficial effects of this invention are: This invention provides a lead bending device for processing ceramic varistors. Through a feeding assembly and guide limiting structure, the device uses a transmission method where the outer wall protrusion of the transmission belt engages with the through-hole of the fixed belt to drive the feed strip. Compared to conventional friction transmission, this effectively avoids belt slippage and misalignment. The through-slot at the bottom of the guide frame avoids the varistor leads, preventing deformation and damage caused by squeezing or scraping between the leads and the frame during transport, ensuring the leads are initially straight and intact. Simultaneously, a first guide plate that gradually narrows along the conveying direction gradually corrects the fixed belt, while a second guide plate covering the top of the varistor body restricts its upward movement and tilting. This achieves dual precise positioning of the feed strip and the varistor body, ensuring that each varistor accurately reaches the bending and cutting station. This ensures consistency between the bending angle and the cutting position from the feeding source, effectively reducing the processing defect rate.

[0016] This invention provides a lead bending device for processing ceramic varistors. Through a single-power, co-driven dual-set reciprocating assembly, a first motor synchronously drives two sets of crank-roller mechanisms via a pulley, ensuring complete synchronization between the bending and cutting components. This avoids process misalignment and rhythm disruption, while simplifying the power system, reducing equipment manufacturing costs and maintenance complexity. Furthermore, the entire reciprocating mechanism uses a crank-elliptical groove roller transmission to convert rotational motion into linear reciprocating motion. Combined with the sliding engagement of the dovetail-shaped connecting rod and the slide block, this significantly improves the straightness and stability of the stamping action, preventing bending and cutting deviations caused by lateral movement. The device can also flexibly adjust the reciprocating stroke of the connecting rod by moving the entire disc and fixed base via a telescopic rod, adapting to the processing needs of various specifications of ceramic varistors with different lead lengths and bending angles, significantly improving the device's versatility and applicability.

[0017] This invention provides a lead bending device for processing ceramic varistors. Through a linked pushing assembly, it directly reuses the reciprocating power of the cutting-side connecting rod. This power is transmitted via the meshing of a toothed plate and gear disc, worm gear reduction and reversal, and bevel gear steering, driving the elastic rod on the outer wall of the sleeve to rotate continuously. No separate drive motor is required, further simplifying the overall structure and reducing energy consumption and manufacturing costs. Simultaneously, the elastic rod applies a pre-tightening force to the varistor body before cutting, ensuring the lead connection section fits tightly against the support surface of the cutting seat for stable positioning. This prevents lead movement during cutting, avoiding skewing and burrs, and ensuring a smooth cut surface. Furthermore, the device pushes the finished product away from the workstation and into the collection hopper at the moment of lead cutting, effectively preventing jamming and hindering continuous material feeding. The self-locking characteristics of the worm gear ensure stable and controllable pushing action, ultimately achieving fully automated continuous operation of feeding, bending, cutting, and unloading. This significantly improves the processing efficiency and product yield of ceramic varistor lead bending, while reducing manual intervention costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall front structure of the present invention.

[0020] Figure 2 This is a frontal planar structural diagram of the present invention.

[0021] Figure 3 This is a schematic diagram of the mating structure of the reciprocating component and the bending seat of the present invention.

[0022] Figure 4 This is a schematic diagram of the mating structure of the reciprocating component and the cut-off seat of the present invention.

[0023] Figure 5 This is a schematic diagram of the overall rear structure of the present invention.

[0024] Figure 6 This is a schematic diagram of the internal structure of the shell after cross-section.

[0025] Figure 7 This is a schematic diagram of the overall oblique section structure of the present invention.

[0026] Figure 8 For the present invention Figure 7 A magnified structural diagram of point A in the middle.

[0027] In the picture: 1. Housing; 2. Guide frame; 3. Through groove; 4. First guide plate; 5. Second guide plate; 6. Transmission belt; 7. Collection hopper; 8. Fixing belt; 9. Through hole; 10. Drive wheel; 12. Reciprocating assembly; 1201. Telescopic rod; 1202. Fixed column; 1203. Disc; 1204. Fixed seat; 1205. Elliptical groove; 1206. Roller; 1207. Crank; 1208. First rotating column; 1209. Connecting rod; 1210. Slide; 1211. Reinforcing column; 13. Driven wheel; 14. Bending seat; 15. First pulley; 16. 17. First connecting block; 18. Bending plate; 19. Varistor body; 20. Second connecting block; 21. Cutting blade; 22. Second pulley; 23. Cutting seat; 24. Cutting groove; 25. Extension plate; 26. First bevel gear; 27. Second bevel gear; 28. Second rotating column; 29. ​​Worm gear; 30. Gear disk; 31. Tooth plate; 32. Rotating shaft; 33. Vertical plate; 34. Fixed cylinder; 35. First motor; 36. Second motor; 37. Third rotating column; 38. Fourth rotating column; 39. Sleeve; 40. Elastic rod; 41. Slide groove. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0029] Please see Figures 1-8A lead bending device for processing ceramic varistors includes a housing 1. A feeding assembly is provided on one side of the housing 1 for conveying a varistor body 18 fixedly connected to one side of a fixing band 8. A bending assembly for processing the leads of the varistor body 18 and a cutting assembly for separating the bent varistor body 18 from the fixing band 8 are provided on one side of the housing 1. A reciprocating assembly 12 for providing power to the bending assembly and the cutting assembly is provided on one outer wall of the housing 1; A feeding component is provided on one side of the cutting component to improve the unloading efficiency of the varistor body 18 after bending. The feeding component continuously conveys the fixed strip 8 connected in series with the varistor body 18, so that the resistor passes through the bending station and the cutting station in sequence. The reciprocating component 12 provides stamping power to the bending component and the cutting component at the same time, and the lead bending and strip cutting and separation are completed in sequence. Finally, the finished product is automatically unloaded and collected by the feeding component. At the same time, the device integrates multiple processes such as feeding, bending, cutting and unloading into one, eliminating the need for multiple machines to process in steps, effectively shortening the processing flow, realizing fully automated continuous operation, and greatly improving the production efficiency of ceramic varistor lead bending.

[0030] Furthermore, the feeding assembly includes a second motor 36 fixedly connected to the outer wall of one side of the housing 1. A rotating rod is fixedly connected to the output end of the second motor 36. A drive wheel 10 is fixedly connected to one end of the rotating rod extending to the outer side of the other side of the housing 1. A drive belt 6 is drivenly connected to the outer circumference of the drive wheel 10. A driven wheel 13 is drivenly connected to the drive wheel 10 through the drive belt 6. Equally spaced protrusions are fixedly connected to one side of the outer wall of the drive belt 6. Equally spaced through holes 9 are opened on the outer wall of the fixed belt 8. The protrusions on the outer wall of the drive belt 6 are engaged in the through holes 9 on one side of the fixed belt 8 to ensure the stability of the fixed belt 8 transmission. A guide frame 2 for guiding the fixed belt 8 is fixedly connected to one side of the outer wall of the housing 1. A through groove 3 is opened at the bottom of the guide frame 2. The pins of the varistor body 18 are located above the through groove 3. A first guide plate 4 for limiting the fixed belt 8 is fixedly connected to one side of the inner wall of the guide frame 2. The distance between the first guide plate 4 and one side of the inner wall of the guide frame 2 gradually decreases. A second guide plate 5 is fixedly connected. One outer wall of the second guide plate 5 covers the top outer wall of the varistor body 18 for transmission and limiting. The second motor 36 drives the drive wheel 10 to rotate through the rotating rod, and drives the driven wheel 13 to rotate synchronously through the transmission belt 6. The protrusions on the transmission belt 6 are successively embedded into the through holes 9 of the fixed belt 8, and the fixed belt 8 is pulled forward along the guide frame 2 in a meshing transmission manner. At the same time, the through groove 3 at the bottom of the guide frame 2 provides clearance space for the pins, so that the pins are suspended and transported. The first guide plate 4 gradually narrows the spacing along the conveying direction to perform lateral correction of the fixed belt 8. The second guide plate 5 presses on the top of the resistor body to limit its upward movement. Through this meshing feeding structure, the slippage problem caused by friction with the transmission belt 6 can be completely avoided. The feeding step distance is precise and controllable. With the double limiting structure, it can be ensured that each varistor can accurately reach the processing position. At the same time, the through groove 3 design can prevent the pins from being squeezed and scratched during the conveying process, effectively protecting the initial shape of the pins and reducing the defect rate in the feeding process.

[0031] Furthermore, the reciprocating assembly 12 includes a fixed post 1202 fixedly connected to one side of the outer wall of the housing 1. A telescopic rod 1201 is fixedly connected to one end of the fixed post 1202 away from the housing 1. A disc 1203 is fixedly connected to the output end of the telescopic rod 1201. A fixed seat 1204 is fixedly connected to one side of the outer wall of the disc 1203. A through elliptical groove 1205 is formed on the top outer wall of the fixed seat 1204. A roller 120 is slidably connected inside the elliptical groove 1205. 6. A crank 1207 is rotatably connected to the bottom end of the roller 1206. A first rotating column 1208 is fixedly connected to the other end of the crank 1207. A connecting rod 1209 is fixedly connected to one outer wall of the fixed seat 1204. The connecting rod 1209 has a dovetail-shaped cross-section. A reinforcing column 1211 is fixedly connected to one outer wall of the housing 1. A slide block 1210 is fixedly connected to the top of the reinforcing column 1211. The connecting rod 1209 is slidably connected to the slide block 1210. The first rotating column 1208... The crank 1207 is driven to perform a circular motion, and the roller 1206 at the end of the crank 1207 rolls along the inner wall of the elliptical groove 1205, converting the circular rotation of the crank 1207 into the horizontal linear reciprocating motion of the fixed seat 1204. This, in turn, drives the connecting rod 1209 to perform synchronous reciprocating sliding along the slide block 1210. When the telescopic rod 1201 extends or retracts, it can drive the disc 1203 and the fixed seat 1204 to move back and forth as a whole, changing the initial position of the roller 1206 in the elliptical groove 1205. The engagement position is adjusted to regulate the reciprocating stroke of the connecting rod 1209. The crank 1207 and roller 1206 reciprocating transmission operates smoothly with minimal impact. The dovetail-shaped connecting rod 1209, in conjunction with the slide block 1210, provides excellent guiding accuracy and resistance to off-center loads, preventing lateral deflection of the connecting rod 1209 during stamping and ensuring precise stamping position. At the same time, the adjustable stroke design can adapt to processing requirements with different pin lengths and bending angles, greatly improving the applicability and versatility of the device.

[0032] Furthermore, the bending assembly includes a first connecting block 16 fixedly connected to one end of the connecting rod 1209. A bending plate 17 for stamping and bending the pins of the varistor body 18 is fixedly connected to one outer wall of the first connecting block 16. A bending seat 14 for bending and supporting the pins of the varistor body 18 is fixedly connected to one outer wall of the housing 1. When the reciprocating assembly 12 drives the connecting rod 1209 to reciprocate back and forth, the bending plate 17 moves forward and backward synchronously through the first connecting block 16. When the varistor body 18 moves with the fixed belt 8 When the pins are conveyed to the bending station, the root of the pin rests on the support end face of the bending seat 14. The bending plate 17 presses forward to the preset bending position of the pin, so that the pin is bent at a certain angle along the edge of the bending seat 14. At the same time, the bending seat 14 can provide a stable support reference for the pin bending. With the precise stroke control of the reciprocating component 12, the bending angle and bending position height of each varistor can be guaranteed to be consistent, effectively improving the consistency of product forming, avoiding the angle deviation problem caused by manual bending, and ensuring the compatibility of subsequent circuit board plug-in soldering.

[0033] Furthermore, the cutting assembly includes a second connecting block 19 fixedly connected to one end of another connecting rod 1209. A cutting blade 20 is fixedly connected to one outer wall of the second connecting block 19, and a cutting seat 22 is fixedly connected to one outer wall of the housing 1. A cutting groove 23 for cooperating with the cutting blade 20 is provided on one outer wall of the cutting seat 22. Another set of reciprocating components 12 drives the second connecting block 19 to perform synchronous reciprocating motion through the corresponding connecting rod 1209, causing the cutting blade 20 to move forward and backward accordingly. When the bent pressure... When the sensitive resistor is conveyed to the cutting station along with the fixed belt 8, the connection section between the pin and the fixed belt 8 is directly opposite the cutting groove 23. The cutting blade 20 rushes forward into the cutting groove 23 and cuts off the connection part in one go, realizing the separation of the finished product from the material belt. At the same time, the cutting blade 20 and the cutting groove 23 adopt a shearing cooperation, with uniform cutting force and smooth cut, which can avoid burrs, deformation or skewing of the pin cut. Meanwhile, the cutting action and bending action are driven synchronously by the same source of power, which can ensure the rhythm stability of continuous processing.

[0034] Furthermore, a support plate is fixedly connected to one side of the outer wall of the housing 1. A collection hopper 7 is placed on the top of the support plate to collect the bent varistor body 18. After being cut and separated, the finished varistor is pushed forward by the pushing component and falls into the collection hopper 7 below under the action of gravity, thus realizing the centralized collection of the finished product.

[0035] Furthermore, a first motor 35 is fixedly connected to one outer wall of the housing 1. A third rotating column 37 is fixedly connected to the output end of the first motor 35. A first pulley 15 is fixedly connected to the outer circumference of the third rotating column 37. The first pulley 15 is fixedly connected to the first rotating column 1208. A belt is driven to the outer circumference of the first pulley 15. The first pulley 15 is driven to a second pulley 21 via the belt. The second pulley 21 is fixedly connected to another first rotating column 1208. The first motor 35 drives the third rotating column 37 to rotate, thereby driving the first rotating column 1208 to rotate. A pulley 15 rotates synchronously, driving a second pulley 21 to rotate at the same speed via a belt drive. This, in turn, synchronously drives the first rotating column 1208 of the two sets of reciprocating components 12 to rotate synchronously. By using a single motor in conjunction with belt drive to synchronously drive the two sets of actuators, the operating frequency and forward / backward sequence of the bending and cutting processes can be kept completely consistent, avoiding synchronization errors and process misalignment caused by multiple power sources. At the same time, it reduces the number of power sources, simplifies the overall power system structure, reduces equipment manufacturing costs, and also reduces subsequent maintenance workload and operating energy consumption.

[0036] Furthermore, a toothed plate 31 is fixedly connected to one side of the outer wall of the connecting rod 1209, which is fixedly connected to the second connecting block 19. A groove 41 is provided on one side of the outer wall of the slide block 1210 to facilitate the stable movement of the toothed plate 31. A gear disk 30 is meshed on one side of the outer wall of the toothed plate 31. A rotating shaft 32 is fixedly connected to the inner circumference of the gear disk 30. A worm gear 29 is fixedly connected to the outer circumference of the rotating shaft 32. A worm wheel 28 is meshed on the outer circumference of the worm gear 29. A fixed cylinder 34 is fixedly connected to one side of the outer wall of the housing 1 to ensure the stable rotation of the rotating shaft 32. The connecting rod 1209 on the cut-off side drives the toothed plate 31 along the groove 41. The horizontal reciprocating motion is achieved through the meshing transmission between the toothed plate 31 and the gear disk 30, which converts the linear reciprocating motion of the connecting rod 1209 into the reciprocating rotational motion of the gear disk 30 and the rotating shaft 32. The rotating shaft 32 drives the worm 29 to rotate synchronously, and then outputs the power to the second rotating column 27 on the side of the worm wheel 28. This transmission structure directly reuses the reciprocating power of the cutting component to provide driving force for the pushing component, without the need for an additional independent motor, making the overall structure more compact. At the same time, the worm 29 and worm wheel 28 transmission has a reverse self-locking characteristic, which can prevent the pushing component from being reversed and jammed by external force, ensuring a stable and reliable transmission process.

[0037] Furthermore, a second rotating column 27 is fixedly connected to the inner circumference of the worm gear 28, a first bevel gear 25 is fixedly connected to the outer circumference of the second rotating column 27, and a second bevel gear 26 meshes with the outer circumference of the first bevel gear 25. An extension plate 24 is fixedly connected to one side of the outer wall of the cut-off seat 22, and a vertical plate 33 is fixedly connected to the outer circumference of the fixed cylinder 34. The two ends of the second rotating column 27 are rotatably connected to the extension plate 24 and the vertical plate 33, respectively. The worm gear 28 drives the second rotating column 27 to rotate synchronously, causing the first bevel gear 25 to rotate accordingly. Through the meshing transmission with the second bevel gear 26, the power is transmitted again to the vertically arranged fourth rotating column 38, providing a power source for the subsequent pushing assembly.

[0038] Furthermore, the feeding assembly includes a fourth rotating column 38 rotatably connected to the inner wall of the cutting seat 22. The fourth rotating column 38 is fixedly connected to the second bevel gear 26. A sleeve 39 is fixedly connected to the outer circumference of the fourth rotating column 38. Elastic rods 40 distributed in a circular pattern at equal intervals are fixedly connected to the outer circumference of the sleeve 39. One end of the elastic rod 40 abuts against the outer side wall of the varistor body 18. The second bevel gear 26 drives the fourth rotating column 38 and the sleeve 39 to rotate continuously, and the multiple elastic rods 40 on the outer wall of the sleeve 39 move in a circular motion together. The free ends of the elastic rods 40 abut against the side wall of the varistor body 18 in sequence. Before cutting, a lateral thrust is applied to the varistor body 18, so that the lead connection section abuts tightly against the end face of the cutting seat 22 to form a pre-position. When the lead is cut off, the elastic rods 40 push the finished product forward, so that it leaves the cutting position and falls into the collection hopper 7. The elastic rod 40 is made of flexible material, which will not scratch the ceramic shell of the varistor during the pushing process. It has the dual functions of cutting pre-positioning and automatic unloading, which can effectively prevent finished products from getting stuck at the cutting groove 23 and interfering with the subsequent material feeding, ensuring the smoothness of continuous production. At the same time, there is no need for manual cleaning of the station at regular intervals, which further improves the automation level and processing efficiency of the whole machine.

[0039] In summary, with the aid of the above-mentioned technical solution of the present invention, during use, the operator first starts the second motor 36, which drives the rotating rod to rotate, thereby driving the driving wheel 10 to rotate synchronously. At the same time, the driving wheel 10 drives the driven wheel 13 to rotate synchronously through the transmission belt 6. The protrusions evenly distributed on the outer wall of the transmission belt 6 are sequentially engaged into the corresponding through holes 9 on the surface of the fixed belt 8, driving the fixed belt 8 to be smoothly conveyed forward along the guide frame 2 in a meshing transmission manner. The varistor bodies 18 arranged in series on the fixed belt 8 move forward synchronously with the material belt. During the conveying of the varistor bodies 18, the pins of the varistor bodies 18 are avoided by the through groove 3 opened at the bottom of the guide frame 2, so that the pins are suspended above the through groove 3, avoiding physical interference between the guide frame 2 and the pins during the transmission process, and preventing the pins from being subjected to Extrusion, bending, surface scratches, or conveying jams are prevented. The system ensures the pins maintain a straight initial shape during feeding, avoiding premature pin deformation that could affect the consistency of subsequent bending angles and the accuracy of the cutting position. Simultaneously, the first guide plate 4 on the inner wall of the guide frame 2 gradually narrows the distance between itself and the inner wall of the frame along the conveying direction, progressively correcting the movement of the fixed belt 8 and preventing lateral misalignment. The second guide plate 5 presses against the top outer wall of the varistor body 18, restricting it from tilting or shifting upwards during conveying. The two work together to achieve dual limiting of the fixed belt 8 and the varistor body 18, effectively ensuring feeding position accuracy and providing a stable workstation reference for subsequent bending and cutting processes. This avoids problems such as pin bending angle deviation or inaccurate cutting position due to feeding offset. Synchronously, the first motor 35 starts and drives the third rotating column 37 to rotate. The third rotating column 37 drives the first pulley 15 to rotate synchronously. The first pulley 15 drives the second pulley 21 to rotate synchronously through the belt drive. The two sets of pulleys are fixedly connected to the first rotating column 1208 of the two sets of reciprocating components 12, thereby providing the two sets of reciprocating mechanisms with the same source and synchronous rotation power, ensuring that the action rhythm of the bending process and the cutting process are completely matched, avoiding process misalignment. At the same time, the single power source design also simplifies the overall structure of the machine, reduces manufacturing costs and subsequent maintenance difficulty. When the first rotating column 1208 rotates, it drives the crank 1207 to rotate in a circular motion. The roller 1206, which is rotatably connected to the end of the crank 1207, is embedded in the elliptical groove 1205 at the top of the fixed seat 1204 and rolls along the groove wall. The circular motion of the crank 1207 is converted into the horizontal linear reciprocating motion of the fixed seat 1204 through the cooperation of the roller 1206 and the elliptical groove 1205. The dovetail-shaped connecting rod 1209, which is fixed to one side of the fixed seat 1204, slides synchronously along the slide 1210. The cross section of the dovetail-shaped connecting rod 1209 is precisely aligned with the corresponding groove of the slide 1210. The combined structure can withstand vertical loads and prevent vertical movement and lateral deflection of the connecting rod 1209 during movement, greatly improving the straightness and operational stability of the reciprocating motion. The telescopic rod 1201 installed on the fixed column 1202 can drive the disk 1203 and the fixed seat 1204 to move back and forth as a whole through telescopic movement, changing the initial meshing position of the roller 1206 in the elliptical groove 1205. This allows for flexible adjustment of the reciprocating stroke of the connecting rod 1209, adapting to the processing requirements of varistors with different pin lengths and different bending angles, and significantly improving the versatility and applicability of the device. Subsequently, a set of reciprocating components 12 located on the front side drives the first connecting block 16 to perform horizontal reciprocating motion through the connecting rod 1209. The bending plate 17 at the end of the first connecting block 16 presses back and forth accordingly. When the varistor body 18 is conveyed to the bending station by the fixing belt 8, the pin end abuts against the support surface of the bending seat 14. The bending plate 17 presses forward to the corresponding position of the pin, so that the pin is precisely bent along the edge of the bending seat 14, completing the pin bending process. The cooperation between the bending plate 17 and the bending seat 14 is controlled by the precise stroke of the reciprocating components 12, which can ensure that the bending angle and bending position height of each varistor are consistent, effectively improving the product processing consistency and yield. After bending, the varistor body 18 continues to be conveyed to the cutting station along the fixing belt 8. Another set of reciprocating components 12 drives the second connecting block 19 to perform synchronous reciprocating motion through the corresponding connecting rod 1209. The cutting blade 20 at the end of the second connecting block 19 moves back and forth accordingly. When the cutting blade 20 moves forward, it is embedded in the cutting groove 23 on the surface of the cutting seat 22, cutting off the connection between the varistor body 18 and the fixing belt 8, realizing the automatic separation of the varistor body 18 from the material belt after bending. At the same time as the cutting side connecting rod 1209 performs reciprocating motion, the toothed plate 31 fixed to the side wall of the connecting rod 1209 moves along the slide 1210. The upper slide groove 41 moves horizontally reciprocating synchronously. The toothed plate 31 meshes with the gear disk 30, converting the linear reciprocating motion into the reciprocating rotational motion of the gear disk 30. The gear disk 30 drives the rotating shaft 32 to rotate inside the fixed cylinder 34. The worm 29 on the rotating shaft 32 rotates synchronously and drives the worm wheel 28 meshing with it to rotate. The worm wheel 28 drives the second rotating column 27 to rotate. The first bevel gear 25 on the second rotating column 27 rotates synchronously and drives the second bevel gear 26 meshing with it to rotate. The second bevel gear 26 drives the fourth rotating column 38 to rotate inside the cut-off seat 22, thereby driving the sleeve 39 and the outer wall of the sleeve 39 to rotate. The evenly distributed elastic rods 40 rotate synchronously. The ends of the continuously rotating elastic rods 40 press against the side wall of the varistor body 18. This not only applies an outward pushing force before the varistor body 18 is cut, ensuring that the lead connection section to be cut is tightly pressed against the support end face of the cutting seat 22, forming a stable pre-tight positioning, preventing the lead from shifting or deviating due to the cutting force during the cutting process, and ensuring accurate cutting position and a smooth, burr-free cut, but also pushes the separated varistor body 18 away from the cutting station at the moment the lead is cut, allowing it to fall into the collection hopper 7 below, preventing the finished product from getting stuck in the cutting groove. The 23 interference points in the feed of the conveyor belt effectively improve the unloading efficiency and the continuous stability of the whole machine processing. The entire push mechanism fully reuses the reciprocating power of the cutting component, eliminating the need for an additional independent drive motor. This further simplifies the overall structure, reduces energy consumption and manufacturing costs. At the same time, the worm gear 29 and worm wheel 28 structure on the power transmission path have self-locking characteristics, which can ensure stable and controllable push action and avoid the problem of reverse rotation and jamming. Ultimately, it realizes the fully automated continuous operation of feeding, bending, cutting and unloading, which greatly improves the processing efficiency of bending ceramic varistor pins, reduces manual intervention, and ensures processing accuracy and product yield.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lead bending device for processing ceramic varistors, comprising a housing (1), characterized in that, A feeding assembly for conveying the varistor body (18) fixedly connected to one side of the fixing strip (8) is provided on one side of the housing (1). A bending assembly for processing the pins of the varistor body (18) and a cutting assembly for separating the bent varistor body (18) from the fixing strip (8) are provided on one side of the housing (1). The outer wall of one side of the housing (1) is provided with a reciprocating assembly (12) for providing power to the bending assembly and the cutting assembly. One side of the cutting component is provided with a pushing component for improving the material removal efficiency of the varistor body (18) after bending.

2. The lead bending device for processing ceramic varistors according to claim 1, characterized in that, The feeding assembly includes a second motor (36) fixedly connected to the outer wall of one side of the housing (1). A rotating rod is fixedly connected to the output end of the second motor (36). A drive wheel (10) is fixedly connected to one end of the rotating rod extending to the outside of the other side of the housing (1). A drive belt (6) is drivenly connected to the outer circumference of the drive wheel (10). A driven wheel (13) is drivenly connected to the drive wheel (10) through the drive belt (6). Equally spaced protrusions are fixedly connected to one side of the outer wall of the drive belt (6). Equally spaced through holes (9) are opened on the outer wall of the fixing belt (8). The protrusions on the outer wall of the drive belt (6) are engaged in the through holes (9) on one side of the fixing belt (8) to ensure the fixing belt. (8) Stable transmission: A guide frame (2) for guiding the fixed belt (8) is fixedly connected to one side of the outer wall of the housing (1). A through slot (3) is opened at the bottom of the guide frame (2). The pin of the varistor body (18) is located above the through slot (3). A first guide plate (4) for limiting the fixed belt (8) is fixedly connected to one side of the inner wall of the guide frame (2). The distance between the first guide plate (4) and the inner wall of one side of the guide frame (2) gradually decreases. A second guide plate (5) is fixedly connected to one side of the inner wall of the guide frame (2). The outer wall of one side of the second guide plate (5) covers the top outer wall of the varistor body (18) for transmission limiting.

3. The lead bending device for processing ceramic varistors according to claim 2, characterized in that, The reciprocating assembly (12) includes a fixed post (1202) fixedly connected to the outer wall of one side of the housing (1). A telescopic rod (1201) is fixedly connected to one end of the fixed post (1202) away from the housing (1). A disc (1203) is fixedly connected to the output end of the telescopic rod (1201). A fixed seat (1204) is fixedly connected to one side of the outer wall of the disc (1203). A through-type elliptical groove (1205) is opened on the top outer wall of the fixed seat (1204). A roller (1) is slidably connected inside the elliptical groove (1205). 206), the bottom end of the roller (1206) is rotatably connected to a crank (1207), the other end of the crank (1207) is fixedly connected to a first rotating column (1208), a connecting rod (1209) is fixedly connected to one side of the outer wall of the fixed seat (1204), the cross-section of the connecting rod (1209) is dovetail-shaped, a reinforcing column (1211) is fixedly connected to one side of the outer wall of the housing (1), a slide (1210) is fixedly connected to the top of the reinforcing column (1211), and the connecting rod (1209) is slidably connected to the slide (1210).

4. The lead bending device for processing ceramic varistors according to claim 3, characterized in that, The bending assembly includes a first connecting block (16) fixedly connected to one end of the connecting rod (1209), a bending plate (17) for stamping and bending the pins of the varistor body (18) is fixedly connected to one side of the outer wall of the first connecting block (16), and a bending seat (14) for bending and supporting the pins of the varistor body (18) is fixedly connected to one side of the outer wall of the housing (1).

5. The lead bending device for processing ceramic varistors according to claim 4, characterized in that, The cutting assembly includes a second connecting block (19) fixedly connected to one end of another connecting rod (1209). A cutting blade (20) is fixedly connected to one side of the outer wall of the second connecting block (19). A cutting seat (22) is fixedly connected to one side of the outer wall of the housing (1). A cutting groove (23) for cooperating with the cutting blade (20) is provided on one side of the outer wall of the cutting seat (22).

6. The lead bending device for processing ceramic varistors according to claim 5, characterized in that, A support plate is fixedly connected to one side of the outer wall of the housing (1), and a collection hopper (7) for collecting the bent varistor body (18) is placed on the top of the support plate.

7. The lead bending device for processing ceramic varistors according to claim 6, characterized in that, A first motor (35) is fixedly connected to one side of the outer wall of the housing (1). A third rotating column (37) is fixedly connected to the output end of the first motor (35). A first pulley (15) is fixedly connected to the outer circumference of the third rotating column (37). The first pulley (15) is fixedly connected to the first rotating column (1208). A belt is driven to the outer circumference of the first pulley (15). A second pulley (21) is driven to the first pulley (15) through the belt. The second pulley (21) is fixedly connected to another first rotating column (1208).

8. The lead bending device for processing ceramic varistors according to claim 7, characterized in that, A toothed plate (31) is fixedly connected to one side of the connecting rod (1209) which is fixedly connected to the second connecting block (19). A groove (41) is provided on one side of the outer wall of the slide block (1210) to facilitate the stable movement of the toothed plate (31). A gear disk (30) is meshed on one side of the outer wall of the toothed plate (31). A rotating shaft (32) is fixedly connected to the inner circumference of the gear disk (30). A worm (29) is fixedly connected to the outer circumference of the rotating shaft (32). A worm wheel (28) is meshed on the outer circumference of the worm (29). A fixed cylinder (34) is fixedly connected to one side of the outer wall of the housing (1) to ensure the stable rotation of the rotating shaft (32).

9. The lead bending device for processing ceramic varistors according to claim 8, characterized in that, The inner circumferential wall of the worm gear (28) is fixedly connected to a second rotating column (27), the outer circumferential wall of the second rotating column (27) is fixedly connected to a first bevel gear (25), the outer circumferential wall of the first bevel gear (25) is meshed with a second bevel gear (26), one side of the outer wall of the cut-off seat (22) is fixedly connected to an extension plate (24), the outer circumferential wall of the fixed cylinder (34) is fixedly connected to a vertical plate (33), and the two ends of the second rotating column (27) are rotatably connected to the extension plate (24) and the vertical plate (33) respectively.

10. The lead bending device for processing ceramic varistors according to claim 9, characterized in that, The feeding assembly includes a fourth rotating column (38) rotatably connected to the inner wall of the cut-off seat (22). The fourth rotating column (38) is fixedly connected to the second bevel gear (26). A sleeve (39) is fixedly connected to the outer circumference of the fourth rotating column (38). Elastic rods (40) are equidistantly distributed in a circular pattern on the outer circumference of the sleeve (39). One end of the elastic rod (40) abuts against the outer wall of one side of the varistor body (18).

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