Automatic processing device for relay composite contact

Abstract

The application provides a relay composite contact automatic processing device, and relates to the relay contact processing technical field, which comprises a workbench, a storage positioning assembly is installed in the middle of the top surface of the workbench; the storage positioning assembly comprises an intermittent motor and an intermittent shaft, the intermittent motor is fixedly connected to the top surface of the inner cavity of the workbench, the intermittent shaft is rotatably connected to the workbench, and the output shaft end of the intermittent motor is rotatably connected with the intermittent shaft through a gear set; the storage component comprises a square block, the top surface of the square block is provided with a mounting groove, and the mounting groove is provided with a clamping structure. The storage positioning assembly, the first terminal feeding assembly, the second terminal feeding assembly, the first rivet feeding assembly, the second rivet feeding assembly, the first pressing assembly, the second pressing assembly and the discharging conveying assembly are used to feed two groups of different terminals and rivets, press the rivets on the terminals, and automatically discharge after successful pressing.

Description

Technical Field

[0001] This invention relates to the field of relay contact processing technology, and more specifically to an automatic processing device for relay composite contacts. Background Technology

[0002] Currently, in the production of electronic components, automotive parts, and electrical connectors, terminals are key conductive connectors, and their processing quality and efficiency directly affect product performance and production costs. In traditional terminal processing, especially the rivet crimping process, the following manual operation is typically used: First, the operator places the terminals to be processed one by one onto the worktable of a stamping machine or into the cavity of a special mold, and manually calibrates the position; then, the rivet is inserted into the pre-set hole in the terminal; after placement, the operator starts the stamping machine, using the punch to apply pressure to the rivet, causing it to plastically deform and firmly bond with the terminal, thus completing the processing of one terminal; after processing, the operator must manually remove the finished product, clean the workstation, and only then can the next terminal be loaded and processed in the cycle.

[0003] The aforementioned prior art has the following drawbacks:

[0004] 1. The entire process of loading, placing rivets, starting the equipment, and unloading relies entirely on manual operation. The production pace is limited by the operators' skill level and physical strength, making it difficult to achieve continuous, high-speed production. At the same time, repetitive manual operations increase the labor intensity of workers, easily leading to fatigue and further decline in production efficiency. In large-scale production, this significantly increases the labor cost per unit of product.

[0005] 2. Existing processing methods typically involve designing dedicated molds or fixed fixtures for specific terminal models. When product models change and different shapes and sizes of terminals need to be processed, the corresponding molds must be replaced, and sometimes the entire feeding and positioning mechanism may need to be adjusted or replaced. This process is not only time-consuming, leading to extended equipment downtime and reduced production efficiency, but also requires the storage of multiple sets of molds, increasing initial equipment investment and subsequent maintenance and management costs. Furthermore, mold replacement and debugging require professional personnel, further increasing the complexity and cost of production conversion. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an automatic processing device for relay composite contacts, which solves the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An automatic processing device for relay composite contacts includes a worktable. A storage and positioning assembly is installed in the center of the top surface of the worktable. A first terminal feeding assembly, a second terminal feeding assembly, a first rivet feeding assembly, a second rivet feeding assembly, a first pressing assembly, a second pressing assembly, and a material unloading and conveying assembly are respectively installed on the top surface of the worktable. These components surround the storage and positioning assembly. The storage and positioning assembly includes an intermittent motor and an intermittent shaft. The intermittent motor is fixedly connected to the top surface of the inner cavity of the worktable, and the intermittent shaft is rotatably connected inside the worktable. The output shaft of the intermittent motor is rotatably connected to the intermittent shaft via a gear set. The top surface of the intermittent shaft is fixedly connected to an intermittent... The intermittent plate has a circumferential array of pressing holes on its top surface. A storage component is installed on the top surface of the intermittent plate above the pressing holes. There are eight sets of storage components. Each storage component includes a square block. The top surface of the square block has a mounting groove, and a clamping structure is installed within the mounting groove. A first positioning groove and a gripper groove are respectively provided on one side of the top surface of the square block within the mounting groove. A pick-and-place groove is provided on the other side of the top surface of the square block within the mounting groove. A second positioning groove and a third positioning groove are respectively provided on the other side of the top surface of the square block within the mounting groove. The second and third positioning grooves are perpendicular to each other and communicate with the pick-and-place groove. A first rivet hole is provided at the bottom of the second positioning groove, and a second rivet hole is provided at the bottom of the third positioning groove.

[0009] Furthermore, the clamping structure includes a hollow box, with arc-shaped spring pieces fixedly connected to both sides of the hollow box, a ball head fixedly connected to the top surface of the hollow box, a first terminal storage slot and a second terminal storage slot respectively provided on the top surface of the hollow box and on both sides of the ball head, a downward pressure rod slidably connected inside the ball head, a trapezoidal block fixedly connected to the bottom surface of the downward pressure rod, a reset damping rod fixedly connected to the top surface of the trapezoidal block and between the inner walls of the hollow box, an extension block fixedly connected to one side of the downward pressure rod, guide sleeves symmetrically fixedly connected to the inner walls of the hollow box, a blocking rod slidably connected inside the guide sleeves, a blocking damping rod fixedly connected to one side of the blocking rod and between the guide sleeves, a square hole provided on one side of the blocking rod, and unlocking holes symmetrically provided on one side of the hollow box.

[0010] Furthermore, the clamping structure also includes a swing block, a locking damping rod, and an auxiliary damping rod. The locking damping rod and the auxiliary damping rod are symmetrically fixedly connected to the bottom surface of the hollow box. The swing block is symmetrically rotatably connected to the bottom surface of the hollow box. One end of the locking damping rod is fixedly connected to an inclined block. One side of the inclined block is fixedly connected to a connecting rod. One end of the connecting rod is fixedly connected to a first semi-arc plate. The surface of the connecting rod is rotatably connected to the swing block through a first angle rod. The top surface of the swing block is rotatably connected to a second semi-arc plate through a second angle rod. One end of the auxiliary damping rod is fixedly connected to the second semi-arc plate.

[0011] Furthermore, the feeding and conveying assembly includes a first feeding column, a second feeding column, and a robotic arm. A feeding motor is fixedly connected to the top surface of the first feeding column. The output end of the feeding motor is rotatably connected to a main sprocket via a worm gear and a worm wheel. The top surface of the worktable is respectively equipped with a second feeding column and a robotic arm. A driven sprocket is rotatably connected to the upper part of the second feeding column. The main sprocket is rotatably connected to the driven sprocket via a feeding chain. Clamping components are arrayed on the bottom surface of the feeding chain.

[0012] Furthermore, the clamping component includes a hollow box, and hollow boxes are fixedly connected at equal intervals to the bottom surface of the feeding chain. Clamping damping rods are symmetrically fixedly connected inside the hollow box. An arc-shaped clamping block is fixedly connected to one end of each clamping damping rod, and stabilizing rods are fixedly connected to both sides of the hollow box.

[0013] Furthermore, the first terminal feeding assembly includes a terminal vibratory feeder, a terminal conveyor belt, a support column, a support rod, and a material handling component. The top surface of the workbench is fixedly connected to the terminal vibratory feeder, the terminal conveyor belt, the support column, and the support rod. The unloading end of the terminal vibratory feeder is fixedly connected to the terminal conveyor belt. The unloading end of the terminal conveyor belt is fixedly connected to the support column and the support rod. The top surface of the support column is fixedly connected to a terminal block. A feeding hole is provided on one side of the terminal block, and a vertical hole is provided inside the terminal block. A linear cylinder is fixedly connected to one side of the support rod, and a vertical push block is fixedly connected to the output end of the linear cylinder. A material handling component is installed on the top surface of the workbench, located on one side of the support column.

[0014] Furthermore, the material handling component includes a material handling frame, which is fixedly connected to the top surface of the workbench. A translation rail is fixedly connected to one side of the material handling frame, and a translation block is slidably connected to one side of the translation rail. A lifting cylinder is fixedly connected to one side of the translation block, and a vacuum terminal block is fixedly connected to the output end of the lifting cylinder. A terminal slot is provided on the bottom surface of the vacuum terminal block. The second terminal feeding assembly adopts the same structure as the first terminal feeding assembly.

[0015] Furthermore, the first rivet feeding assembly includes a rivet vibratory feeder, a rivet conveyor belt, a feeding platform, and a feeding component. The top surface of the workbench is respectively equipped with the rivet vibratory feeder, the rivet conveyor belt, and the feeding platform. The rivet conveyor belt is installed at the unloading end of the rivet vibratory feeder, and the feeding platform is installed at the unloading end of the rivet conveyor belt. The two ends of the top surface of the feeding platform are respectively fixedly connected to a material picking block and a conveying pneumatic rod. The top surface of the material picking block is respectively provided with a long groove and a feeding groove. The two ends of the feeding groove are respectively connected to the long groove and the rivet conveyor belt. The output end of the conveying pneumatic rod is fixedly connected to a long plate. The long plate slides within the long groove. A rivet hole is provided on the upper part of one side of the long plate. The feeding component is installed on the top surface of the workbench and on the side of the feeding platform.

[0016] Furthermore, the feeding component includes a bracket, the top surface of the workbench is fixedly connected to the bracket, a forward extension rail is installed on one side of the bracket, a forward extension slider is slidably connected to one side of the forward extension rail, a material-picking pneumatic rod is fixedly connected to one side of the forward extension slider, a vacuum rod is fixedly connected to the output shaft end of the material-picking pneumatic rod, and a suction hole is provided on the bottom surface of the vacuum rod; the second rivet feeding assembly adopts the same structure as the first rivet feeding assembly.

[0017] Furthermore, the first pressing assembly includes a column and a fixed frame. The column is fixedly connected to the top surface of the workbench. A U-shaped groove is provided on the upper part of one side of the column. A downward pressing pneumatic rod is fixedly connected to the top surface of the column. A downward pressing column is fixedly connected to the output end of the downward pressing pneumatic rod. A fixed frame is fixedly connected to the top of the inner cavity of the workbench. An upward pressing pneumatic rod is fixedly connected to the bottom surface of the fixed frame. An upward pressing rod is fixedly connected to the output end of the upward pressing pneumatic rod. An upward pressing column is fixedly connected to the top surface of the upward pressing rod. One end of the upward pressing rod passes through the workbench and is slidably connected to the workbench. The second pressing assembly adopts the same structure as the first pressing assembly.

[0018] This invention provides an automatic processing device for relay composite contacts. Compared with the prior art, it has the following advantages:

[0019] 1. By using a layout of "centrally stored positioning components + peripheral functional components", the processes of terminal feeding, rivet feeding, pressing and fixing, and unloading and conveying are concentrated on the same workbench, replacing decentralized operations, greatly shortening the process flow distance and improving overall efficiency.

[0020] 2. The intermittent disk driven by the intermittent motor drives the 8 sets of storage components to rotate in a cycle, realizing the orderly switching of workpieces between processes. Combined with the pressing holes and positioning slots of the circumferential array, it ensures that the processing position of each process is accurately corresponding, solving the positioning offset problem in continuous conveying.

[0021] 3. The independent design of the first / second / third positioning slots and corresponding rivet holes for storing components provides dedicated workstations for positioning and rivet assembly of two different types of terminals, enabling simultaneous assembly of multi-size components from a structural perspective, and adapting to the processing needs of multi-specification terminals such as automotive wiring harnesses. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0023] Figure 1 An overall schematic diagram of the present invention is shown;

[0024] Figure 2 This diagram shows another perspective view of the overall invention;

[0025] Figure 3 A schematic diagram of the first terminal feeding assembly of the present invention is shown;

[0026] Figure 4 A partial schematic diagram of the first terminal feeding assembly of the present invention is shown;

[0027] Figure 5 A schematic diagram of the vacuum terminal block of the present invention is shown;

[0028] Figure 6 A partial cross-sectional schematic diagram of the terminal block of the present invention is shown;

[0029] Figure 7 A schematic diagram of the first rivet feeding assembly of the present invention is shown;

[0030] Figure 8 A schematic diagram of the vacuum rod of the present invention is shown;

[0031] Figure 9 A schematic diagram of the loading platform of the present invention is shown;

[0032] Figure 10 A schematic diagram of the loading platform and the long plate of the present invention is shown;

[0033] Figure 11 A schematic diagram of the first pressing component of the present invention is shown;

[0034] Figure 12 A schematic diagram of the column of the present invention is shown;

[0035] Figure 13 A schematic diagram of the feeding and conveying assembly of the present invention is shown;

[0036] Figure 14This invention illustrates the concept of a robotic arm;

[0037] Figure 15 A schematic diagram of the positioning component of the present invention is shown;

[0038] Figure 16 A schematic diagram of the intermittent disk of the present invention is shown;

[0039] Figure 17 A schematic diagram of the storage component of the present invention is shown;

[0040] Figure 18 A partial cross-sectional schematic diagram of the storage component of the present invention is shown;

[0041] Figure 19 A half-sectional schematic diagram of the storage component of the present invention is shown;

[0042] Figure 20 A partial cross-sectional schematic diagram of the hollow box of the present invention is shown;

[0043] Figure 21 This diagram shows a partial cross-section of the hollow box of the present invention from another perspective;

[0044] Figure 22 A schematic diagram of the interior of the hollow box of the present invention is shown;

[0045] As shown in the figure:

[0046] 100. Workbench;

[0047] 200. Storage and positioning components; 201. Intermittent motor; 202. Intermittent shaft; 203. Intermittent disc; 204. Pressing hole; 205. Square block; 206. Mounting slot; 207. First positioning slot; 208. Gripper slot; 209. Pick-and-place slot; 210. Second positioning slot; 211. Third positioning slot; 212. First rivet hole; 213. Second rivet hole; 214. Hollow box; 215. Arc-shaped spring; 216. Ball head; 217. First terminal storage slot; 218. ... Two-terminal storage slot; 219, pressing rod; 220, trapezoidal block; 221, reset damping rod; 222, extension block; 223, guide sleeve; 224, blocking rod; 225, blocking damping rod; 226, square hole; 227, unlocking hole; 228, swing block; 229, locking damping rod; 230, auxiliary damping rod; 231, inclined block; 232, connecting rod; 233, first semi-arc plate; 234, first angle rod; 235, second angle rod; 236, second semi-arc plate;

[0048] 300. First terminal feeding assembly; 301. Terminal vibratory feeder; 302. Terminal conveyor belt; 303. Support column; 304. Support rod; 305. Terminal block; 306. Feed hole; 307. Vertical hole; 308. Linear cylinder; 309. Vertical push block; 310. Picking rack; 311. Translation track; 312. Translation block; 313. Lifting cylinder; 314. Vacuum terminal block; 315. Terminal slot;

[0049] 400. Second terminal feeding assembly;

[0050] 500. First rivet feeding assembly; 501. Rivet vibratory feeder; 502. Rivet conveyor belt; 503. Feeding platform; 504. Picking block; 505. Conveying pneumatic rod; 506. Long trough; 507. Feed trough; 508. Long plate; 509. Rivet hole; 510. Support; 511. Forward extension track; 512. Forward extension slider; 513. Picking pneumatic rod; 514. Vacuum rod; 515. Suction hole;

[0051] 600. Second rivet feeding assembly;

[0052] 700, First pressing assembly; 701, Column; 702, Fixing frame; 703, U-shaped channel; 704, Lower pressing pneumatic rod; 705, Lower pressing column; 706, Upper pressing pneumatic rod; 707, Upper pressing rod; 708, Upper pressing column;

[0053] 800, Second Suppression Component;

[0054] 900. Feeding conveyor assembly; 901. First feeding column; 902. Second feeding column; 903. Robotic arm; 904. Feeding motor; 905. Main sprocket; 906. Spur sprocket; 907. Feeding chain; 908. Hollow box; 909. Clamping damping rod; 910. Arc-shaped clamping block; 911. Stabilizing bar. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] Example

[0057] To address the technical problems in the background section, an automatic processing device for relay composite contacts is provided as follows:

[0058] Combination Figures 1-22As shown, the present invention provides an automatic processing device for relay composite contacts, including a worktable 100. A storage and positioning assembly 200 is installed in the middle of the top surface of the worktable 100. A first terminal feeding assembly 300, a second terminal feeding assembly 400, a first rivet feeding assembly 500, a second rivet feeding assembly 600, a first pressing assembly 700, a second pressing assembly 800, and a material unloading and conveying assembly 900 are respectively installed on the top surface of the worktable 100. The first terminal feeding assembly 300 and the second terminal feeding assembly 400... 0. A first rivet feeding assembly 500, a second rivet feeding assembly 600, a first pressing assembly 700, a second pressing assembly 800, and a discharge conveying assembly 900 are installed around a storage and positioning assembly 200. The storage and positioning assembly 200 includes an intermittent motor 201 and an intermittent shaft 202. The intermittent motor 201 is fixedly connected to the top surface of the inner cavity of the worktable 100, and the intermittent shaft 202 is rotatably connected inside the worktable 100. The output shaft end of the intermittent motor 201 is rotatably connected to the intermittent shaft 202 through a gear set. The top of the intermittent shaft 202... An intermittent disk 203 is fixedly connected to the surface. The top surface of the intermittent disk 203 has a circumferential array of pressing holes 204. Storage components are installed on the top surface of the intermittent disk 203 above the pressing holes 204. Eight sets of storage components are provided. Each storage component includes a square block 205. The top surface of the square block 205 has a mounting groove 206. A clamping structure is installed within the mounting groove 206. The top surface of the square block 205, located on one side of the mounting groove 206, has a first positioning groove 207 and a gripper groove 208. The top surface of the square block 205 and... A pick-and-place slot 209 is provided on the other side of the mounting slot 206. A second positioning slot 210 and a third positioning slot 211 are respectively provided on the top surface of the square block 205 on the other side of the mounting slot 206. The second positioning slot 210 and the third positioning slot 211 are perpendicular to the pick-and-place slot 209 and are connected to the pick-and-place slot 209. A first rivet hole 212 is provided at the bottom of the second positioning slot 210 and a second rivet hole 213 is provided at the bottom of the third positioning slot 211.

[0059] By using a layout of "centrally stored positioning components + peripheral functional components", processes such as terminal feeding, rivet feeding, pressing and fixing, and unloading and conveying are concentrated on the same workbench, replacing decentralized operations, greatly shortening the process flow distance, and improving overall efficiency.

[0060] The intermittent motor-driven intermittent disk drives 8 sets of storage components to rotate in a cycle, realizing the orderly switching of workpieces between processes. Combined with the circumferential array of pressing holes and positioning slots, it ensures that the processing position of each process is accurately corresponding, solving the positioning offset problem in continuous conveying.

[0061] The independent design of the first / second / third positioning slots and corresponding rivet holes for storing components provides dedicated workstations for positioning and rivet assembly of two different types of terminals, structurally enabling the simultaneous assembly of multi-size components and adapting to the processing needs of multi-specification terminals such as automotive wiring harnesses.

[0062] In this embodiment, the clamping structure includes a hollow box 214, with arc-shaped spring pieces 215 fixedly connected to both sides of the hollow box 214. A ball head 216 is fixedly connected to the top surface of the hollow box 214. A first terminal storage slot 217 and a second terminal storage slot 218 are respectively provided on the top surface of the hollow box 214 and on both sides of the ball head 216. A downward pressure rod 219 is slidably connected inside the ball head 216. A trapezoidal block 220 is fixedly connected to the bottom surface of the downward pressure rod 219. The top surface of the trapezoidal block 220 and the ball head 216 are fixedly connected to the ball head 216. A reset damping rod 221 is fixedly connected between the inner walls of the hollow box 214. An extension block 222 is fixedly connected to one side of the pressing rod 219. Guide sleeves 223 are symmetrically fixedly connected to the inner walls of the hollow box 214. A blocking rod 224 is slidably connected inside the guide sleeve 223. A blocking damping rod 225 is fixedly connected to one side of the blocking rod 224 and located between the guide sleeves 223. A square hole 226 is provided on one side of the blocking rod 224. Unlocking holes 227 are symmetrically provided on one side of the hollow box 214.

[0063] The first / second terminal storage slots on the top surface of the hollow box and the positioning slots of the square block form a "top-bottom collaborative" positioning structure, which precisely restricts the terminals in the preset position and avoids displacement during transportation; the vacuum adsorption material picking, combined with the terminal slots, realizes contactless picking and placing, reducing plating contamination.

[0064] After the downward pressing rod drives the trapezoidal block to press down, the extension block is locked by the blocking rod, keeping the clamping structure in a pre-fixed state for the terminal; the blocking damping rod ensures that the blocking rod is stably engaged, avoiding accidental unlocking during intermittent rotation and improving the stability of the transfer.

[0065] The curved spring can elastically snap the hollow box into the mounting slot, enabling rapid assembly of the clamping structure and the stored components; the corresponding design of the unlocking hole and the square hole provides clear operating points for the subsequent unlocking by the robotic arm, ensuring the efficiency of automated disassembly and assembly.

[0066] In this embodiment, the clamping structure further includes a swing block 228, a locking damping rod 229, and an auxiliary damping rod 230. The locking damping rod 229 and the auxiliary damping rod 230 are symmetrically fixedly connected to the bottom surface of the hollow box 214. The swing block 228 is symmetrically rotatably connected to the bottom surface of the hollow box 214. One end of the locking damping rod 229 is fixedly connected to a wedge block 231. One side of the wedge block 231 is fixedly connected to a connecting rod 232. One end of the connecting rod 232 is fixedly connected to a first semi-arc plate 233. The surface of the connecting rod 232 is rotatably connected to the swing block 228 through a first angle rod 234. The top surface of the swing block 228 is rotatably connected to a second semi-arc plate 236 through a second angle rod 235. One end of the auxiliary damping rod 230 is fixedly connected to the second semi-arc plate 236.

[0067] When the trapezoidal block is pressed down, it squeezes the inclined block. Through the transmission of the linkage rod and the angle rod, it drives the first / second semi-arc pieces to extend out of the hollow box, respectively, and laterally clamp the terminals in the first / second terminal storage slots, forming a double fixation of "slot positioning + arc piece locking", so that there is no displacement during pressing;

[0068] The locking damping rod and the auxiliary damping rod provide elastic support for the semi-circular plate. The clamping force can be finely adjusted according to the terminal size, which avoids damage to the terminal due to excessive tightness and prevents it from falling off due to excessive looseness. It is suitable for locking requirements of terminals of various sizes.

[0069] When unlocking, the trapezoidal block moves upward, the inclined block resets under the action of the damping rod, and the semi-arc plate retracts synchronously, realizing a rapid switch between the locked and unlocked states. Combined with the operation of the robotic arm, it forms an automated locking-unlocking cycle.

[0070] In this embodiment, the unloading and conveying assembly 900 includes a first unloading column 901, a second unloading column 902, and a robot arm 903. The top surface of the first unloading column 901 is fixedly connected to an unloading motor 904. The output end of the unloading motor 904 is rotatably connected to a main sprocket 905 through a worm gear and worm wheel. The top surface of the worktable 100 is respectively mounted with the second unloading column 902 and the robot arm 903. The upper part of the second unloading column 902 is rotatably connected to a driven sprocket 906. The main sprocket 905 is rotatably connected to the driven sprocket 906 through an unloading chain 907. The bottom surface of the unloading chain 907 is arrayed with clamping components.

[0071] The unloading motor drives the clamping components to move in a cycle through a sprocket-chain transmission, continuously transporting the finished terminals removed by the robotic arm to the next process, replacing manual single pick-and-place and improving unloading efficiency;

[0072] The robotic arm is responsible for removing the clamping structure from the storage components and connecting it to the clamping components of the chain, forming an automated connection of "picking up - transferring - conveying" to avoid process interruption;

[0073] The worm gear drive structure has self-locking properties, which can prevent the chain from reversing when the machine stops; the master and slave sprockets work together to ensure smooth chain operation and provide a uniform conveying trajectory for the clamping components.

[0074] In this embodiment, the clamping component includes a hollow box 908. The bottom surface of the feeding chain 907 is fixedly connected with the hollow box 908 at equal intervals. The hollow box 908 is symmetrically fixedly connected with clamping damping rods 909. One end of the clamping damping rod 909 is fixedly connected with an arc-shaped clamping block 910. The two sides of the hollow box 908 are respectively fixedly connected with stabilizing rods 911.

[0075] The symmetrically arranged arc-shaped clamping blocks are adapted to the ball head structure on the top of the hollow box, and achieve three-point positioning and clamping through the arc contact surface to ensure that the clamping structure does not deflect during chain movement;

[0076] The clamping damping rod provides buffering elasticity to the curved clamping block, which can adapt to the clamping needs of ball heads of different sizes, while avoiding rigid contact that could damage the ball head;

[0077] The stabilizing bars on both sides of the hollow box can reduce the swing amplitude of the clamping components during chain operation, and with the uniform speed transmission of the chain, reduce the risk of finished terminals falling off during transportation.

[0078] In this embodiment, the first terminal feeding assembly 300 includes a terminal vibratory feeder 301, a terminal conveyor belt 302, a support column 303, a support rod 304, and a material picking component. The terminal vibratory feeder 301, the terminal conveyor belt 302, the support column 303, and the support rod 304 are fixedly connected to the top surface of the workbench 100. The terminal conveyor belt 302 is fixedly connected to the unloading end of the terminal vibratory feeder 301. The support column 303 and the support rod 304 are fixedly connected to the unloading end of the terminal conveyor belt 302. A terminal block 305 is fixedly connected to the top surface of the support column 303. A feed hole 306 is provided on one side of the terminal block 305. A vertical hole 307 is provided inside the terminal block 305. A linear cylinder 308 is fixedly connected to one side of the support rod 304. A vertical push block 309 is fixedly connected to the output end of the linear cylinder 308. A material picking component is installed on the top surface of the workbench 100 and on one side of the support column 303.

[0079] The terminal vibratory feeder sorts the messy terminals into a uniform direction and feeds them into the conveyor belt, solving the problem of low efficiency of manual sorting; the connection design between the feed hole and the vertical hole ensures that the terminals are accurately positioned after entering, avoiding conveying deviation.

[0080] A linear cylinder drives a vertical pusher block to push the material upwards. Each time, only the uppermost terminal in the vertical hole is pushed to the picking position, while the rear terminals are blocked by the pusher block, achieving "single material separation - precise feeding". The picking component does not need secondary screening.

[0081] The dedicated support column, terminal block and push block structure form an independent first terminal feeding unit, which is set in parallel with the second terminal feeding component, providing a synchronous and non-interfering feeding channel for the two types of terminals.

[0082] In this embodiment, the material handling component includes a material handling rack 310. The material handling rack 310 is fixedly connected to the top surface of the workbench 100. A translation rail 311 is fixedly connected to one side of the material handling rack 310. A translation block 312 is slidably connected to one side of the translation rail 311. A lifting cylinder 313 is fixedly connected to one side of the translation block 312. A vacuum terminal block 314 is fixedly connected to the output end of the lifting cylinder 313. A terminal slot 315 is provided on the bottom surface of the vacuum terminal block 314. The second terminal feeding assembly 400 adopts the same structure as the first terminal feeding assembly 300.

[0083] The terminal slots of the vacuum terminal block fit the shape of the terminal, and a negative pressure is formed after vacuuming to attract the terminal, so the terminal does not wobble during the material handling process; compared with mechanical grippers, it reduces damage to the terminal surface and ensures the integrity of the plating.

[0084] The second terminal feeding assembly adopts the same structure, so that the feeding actions of the two terminals follow the same control logic, simplifying the equipment programming and debugging process and reducing maintenance costs.

[0085] In this embodiment, the first rivet feeding assembly 500 includes a rivet vibratory feeder 501, a rivet conveyor belt 502, a feeding platform 503, and feeding components. The rivet vibratory feeder 501, the rivet conveyor belt 502, and the feeding platform 503 are respectively installed on the top surface of the workbench 100. The rivet conveyor belt 502 is installed at the unloading end of the rivet vibratory feeder 501, and the feeding platform 503 is installed at the unloading end of the rivet conveyor belt 502. Picking blocks are fixedly connected to both ends of the top surface of the feeding platform 503. 504 and conveying pneumatic rod 505, the top surface of the picking block 504 is respectively provided with long groove 506 and feeding groove 507, the two ends of the feeding groove 507 are respectively connected to long groove 506 and rivet conveyor belt 502, the output end of conveying pneumatic rod 505 is fixedly connected to long plate 508, long plate 508 slides in long groove 506, rivet hole 509 is provided on the upper part of one side of long plate 508, and feeding component is installed on the top surface of workbench 100 and on one side of feeding platform 503.

[0086] The rivet vibratory feeder uses an internal track design to output rivets in a uniform direction with the larger end on top and the tail end on the bottom, eliminating the tedious manual orientation. The conveyor belt, in conjunction with the feed chute, precisely guides the rivets into the pick-up block.

[0087] When the long plate slides in the long groove, it only moves a single rivet in the rivet hole to the gripping position. The rivets behind are blocked by the long plate, realizing the single-material separation of the rivets. The long groove of the material taking block and the rivet hole form a positioning reference to ensure that the suction hole is directly facing the large end of the rivet during vacuum material taking.

[0088] The independent rivet vibratory feeder, conveyor belt and unloading platform form the first rivet feeding unit, which works in parallel with the second rivet feeding assembly to provide synchronous feeding for the rivet assembly of the two sets of terminals and match the assembly rhythm of the two terminals.

[0089] In this embodiment, the feeding component includes a bracket 510. The bracket 510 is fixedly connected to the top surface of the workbench 100. A forward extension rail 511 is installed on one side of the bracket 510. A forward extension slider 512 is slidably connected to one side of the forward extension rail 511. A material-picking pneumatic rod 513 is fixedly connected to one side of the forward extension slider 512. A vacuum rod 514 is fixedly connected to the output shaft end of the material-picking pneumatic rod 513. A suction hole 515 is provided on the bottom surface of the vacuum rod 514. The second rivet feeding assembly 600 adopts the same structure as the first rivet feeding assembly 500.

[0090] The forward-extending slider switches between the horizontal gripping and assembly positions along the forward-extending track, and the material-picking pneumatic rod drives the vacuum rod to achieve the vertical material picking and insertion action. The two-dimensional motion coordination ensures that the rivet is accurately aligned with the terminal hole.

[0091] The suction hole on the bottom of the vacuum rod is directly aligned with the large end of the rivet. After vacuuming, a stable adsorption is formed, preventing the rivet from falling off or deviating in direction during material handling and transfer. The uniform thrust of the material handling pneumatic rod ensures that the rivet is inserted vertically into the terminal hole without tilting or jamming.

[0092] The second rivet feeding assembly adopts the same structure, so that the picking-and-insertion actions of the two sets of rivets follow a unified process, which is precisely matched with the intermittent rotation rhythm of the stored parts, thereby improving the assembly efficiency of the double rivets.

[0093] In this embodiment, the first pressing assembly 700 includes a column 701 and a fixing frame 702. The column 701 is fixedly connected to the top surface of the workbench 100. A U-shaped groove 703 is provided on the upper part of one side of the column 701. A downward pressing pneumatic rod 704 is fixedly connected to the top surface of the column 701. A downward pressing column 705 is fixedly connected to the output end of the downward pressing pneumatic rod 704. A fixing frame 702 is fixedly connected to the top of the inner cavity of the workbench 100. An upward pressing pneumatic rod 706 is fixedly connected to the bottom surface of the fixing frame 702. An upward pressing rod 707 is fixedly connected to the output end of the upward pressing pneumatic rod 706. An upward pressing column 708 is fixedly connected to the top surface of the upward pressing rod 707. One end of the upward pressing rod 707 passes through the workbench 100 and is slidably connected to the workbench 100. The second pressing assembly 800 adopts the same structure as the first pressing assembly 700.

[0094] The downward pneumatic rod drives the downward pressing column to contact the large end of the rivet, while the upward pneumatic rod drives the upward pressing column to squeeze the tail end of the rivet, forming a "top and bottom opposing pressure" force structure, which makes the tail end of the rivet deform evenly and tightly engage with the terminal, improving the firmness.

[0095] The first and second pressing components correspond to the assembly stations of two sets of rivets, which are synchronized with the intermittent rotation rhythm of the stored components, so that the rivets of the two types of terminals can be fixed at the same time without interfering with each other, which can meet the needs of multi-process integration.

[0096] Working principle and usage process of this invention:

[0097] In use:

[0098] The two types of terminals are the same shape, but different in length. The terminals are equipped with rivet holes and two sets of arc-shaped pieces.

[0099] When using,

[0100] First, the staff put two different sets of terminals into the first terminal feeding assembly 300 and the second terminal feeding assembly 400 respectively. Then, they put two identical sets of rivets into the first rivet feeding assembly 500 and the second rivet feeding assembly 600 respectively.

[0101] Specifically, the workers place the terminals into the terminal vibratory plate 301, while the rivets are placed into the rivet vibratory plate 501.

[0102] When the terminal vibratory feeder 301 is working, the terminals will enter the terminal conveyor belt 302 in the same direction. When the terminal conveyor belt 302 is working, it starts to convey the terminals forward, transporting them to the terminal block 305, and causing the terminals to enter the vertical hole 307 along the feed hole 306. Note that at this time, the terminals will be located on the top surface of the vertical push block 309. At the same time, the terminals will be positioned by the vertical hole 307 and cannot move forward. Subsequent terminals will be located behind the first terminal. When the first terminal is located on the top surface of the vertical push block 309, the linear cylinder 308 will work. The linear cylinder 308 will push the vertical push block 309 to slide upward along the vertical hole 307, pushing the first set of terminals out of the vertical hole 307. Subsequent terminals will be blocked by the vertical push block 309 and wait.

[0103] When the rivet vibratory feeder 501 is working, the rivets will be conveyed forward with the larger end on top and the smaller end on the bottom. The conveyed rivets will enter the rivet conveyor belt 502. The rivet conveyor belt 502 will start to convey the rivets. When the rivets are conveyed to the picking block 504, the rivets will enter the rivet hole 509 along the feed groove 507. The second set of rivets will wait in the feed groove 507. At this time, the conveying pneumatic rod 505 will be started. When the conveying pneumatic rod 505 is working, it will push the long plate 508 to slide in the long groove 506. When the long plate 508 moves, it will drive the rivets forward, so that the rivets come to the picking position. The rivets that follow will be blocked by the long plate 508 in the feed groove 507 and the rivet conveyor belt 502.

[0104] The second step is to begin feeding the terminals and installing them into the corresponding slots:

[0105] Intermittent motor 201 drives intermittent shaft 202 to rotate, and intermittent shaft 202 drives intermittent disk 203 and 8 sets of storage and positioning components to rotate intermittently. When an empty storage and positioning component rotates to the first terminal feeding assembly 300, the feeding of the first type of terminal begins.

[0106] Specifically, during material loading, the translation block 312 slides on one side of the translation track 311, driving the lifting cylinder 313 and the vacuum terminal block 314 to move horizontally. When the vacuum terminal block 314 moves directly above the vertical push block 309, the translation block 312 stops moving, and the lifting cylinder 313 drives the vacuum terminal block 314 downward, causing the terminal on the vertical push block 309 to enter the terminal slot 315. At this time, the vacuum terminal block 314 is evacuated, thus using the vacuum terminal block 314 to adsorb the terminal into the terminal slot 315. After adsorption and fixation, the lifting cylinder 313 drives the vacuum terminal block 314 and the terminal to move upward. After reaching the specified height, the upward movement stops. The translation block 312 drives the vacuum terminal block 314 and the terminal to move forward and come to the top of the storage and positioning component. At this time, the lifting cylinder 313 drives the vacuum terminal block 314 to move downward, placing the two ends of the first set of terminals into the first positioning groove 207 and the second positioning groove 210 respectively, and making the first set of terminals located in the first terminal storage groove 217. After the first terminal is placed in;

[0107] Start installing the second terminal: The method of picking up the second terminal is the same as that of picking up the first terminal. However, when storing, both ends of the second terminal will be placed in the third positioning groove 211 and the second terminal storage groove 218 to complete the loading of the second terminal.

[0108] The third step is to install the rivets onto the first and second terminals respectively;

[0109] When the storage and positioning component with terminals rotates to the first rivet feeding assembly 500, it begins to feed the first group of rivets. When it rotates to the second rivet feeding assembly 600, it begins to feed the second group of rivets.

[0110] Specifically, the forward sliding block 512 slides on the forward track 511, which will drive the material picking pneumatic rod 513 and vacuum rod 514 to move. When the vacuum rod 514 is directly above the long plate 508, it will also be above the rivet. At this time, the material picking pneumatic rod 513 drives the vacuum rod 514 to move downward, so that the vacuum rod 514 falls on the surface of the rivet. At the same time, the suction hole 515 begins to pick up the large end of the rivet and remove it. After removal, the first set of rivets is transported to the top of the first set of terminals. Then, the material picking pneumatic rod 513 inserts the rivets into the holes of the first set of terminals. After insertion, the feeding of the first set of rivets is completed.

[0111] When the storage and positioning component rotates to the second rivet feeding assembly 600, the second set of rivets is inserted into the second set of terminals, thus completing the feeding of the second set of rivets.

[0112] The fourth step is to secure the rivets to the terminals.

[0113] Specifically, when the storage component moves the terminal and rivet to the first pressing assembly 700, the downward pressing pneumatic rod 704 and the upward pressing pneumatic rod 706 work simultaneously. When the downward pressing pneumatic rod 704 works, it will move the downward pressing column 705 downward and upward, and it will come into contact with and abut against the head of the rivet. Meanwhile, the upward pressing pneumatic rod 706 will move the upward pressing rod 707 and the upward pressing column 708 upward. When the upward pressing column 708 moves upward, it will pass through the first rivet hole 212 and come into contact with the tail of the rivet, and squeeze the tail of the rivet, so that the tail of the rivet will deform, and the rivet can be fixed on the terminal.

[0114] When the storage component brings the terminal and rivet to the second pressing component 800, the second pressing component 800 will pass through the second rivet hole 213 to press the second set of rivets, so that the rivets are deformed and fixed on the second set of terminals.

[0115] Step 5: Cut the assembled terminals into parts.

[0116] Specifically, when the robotic arm 903 is working, it moves the gripper along the gripper groove 208. Then, one end of the gripper is inserted into the unlocking hole 227 and then into the square hole 226. After insertion, the gripper moves the blocking rod 224. When the blocking rod 224 moves, it no longer blocks the extension block 222. The reset damping rod 221 moves the trapezoidal block 220 upward, and the trapezoidal block 220 moves the pressing rod 219 upward. At the same time, the trapezoidal block 220 will not... The device then comes into contact with the inclined block 231 again, and no longer presses against it. The inclined block 231 will reset under the action of the locking damping rod 229. During reset, the inclined block 231 drives the connecting rod 232 to move. The movement of the connecting rod 232 will respectively drive the first semi-arc plate 233 and the first angle rod 234 to move. When the first semi-arc plate 233 moves, it will move out of the hollow box 214. The movement of the second angle rod 235 will rotate the swing block 228. The rotation of the swing block 228 will drive the second angle rod... 235 swings, pulling the second semi-arc plate 236 to move, causing the second semi-arc plate 236 to move out of the hollow box 214. At this time, the first terminal can be fixed in the first terminal storage slot 217 by the two sets of first semi-arc plates 233 and second semi-arc plates 236 respectively, while the second terminal is fixed in the second terminal storage slot 218. The robot arm 903 works again, moving the entire clamping structure and the two terminals upward as a whole. The clamping structure moves upward and moves out of the mounting slot 206. The clamping structure will move upward and insert one end of the ball head 216 between the two sets of arc-shaped clamping blocks 910. The two sets of arc-shaped clamping blocks 910 clamp and fix the ball head 216. The robot arm moves out of the clamping structure, completing the unloading of the two sets of terminals. After unloading, the robot arm takes down another empty clamping structure and uses two sets of arc-shaped springs 215 to fix it in the mounting groove 206 for the next set of terminals and rivets. It then squeezes them again to form a whole. Finally, the unloading cycle is repeated.

[0117] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0118] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic processing device for relay composite contacts, characterized in that: The device includes a workbench, on the center of the top surface of which a storage and positioning component is installed. The top surface of the workbench is respectively equipped with a first terminal feeding component, a second terminal feeding component, a first rivet feeding component, a second rivet feeding component, a first pressing component, a second pressing component, and a material unloading and conveying component. The first terminal feeding component, the second terminal feeding component, the first rivet feeding component, the second rivet feeding component, the first pressing component, the second pressing component, and the material unloading and conveying component are installed around the storage and positioning component. The storage and positioning assembly includes an intermittent motor and an intermittent shaft. The intermittent motor is fixedly connected to the top surface of the inner cavity of the worktable, and the intermittent shaft is rotatably connected inside the worktable. The output shaft end of the intermittent motor is rotatably connected to the intermittent shaft through a gear set. An intermittent disk is fixedly connected to the top surface of the intermittent shaft. The top surface of the intermittent disk has a circumferential array of pressing holes. A storage component is installed on the top surface of the intermittent disk and above the pressing holes. A total of eight sets of storage components are provided. The storage component includes a square block. The top surface of the square block is provided with a mounting groove, and a clamping structure is installed in the mounting groove. The top surface of the square block, located on one side of the mounting groove, is provided with a first positioning groove and a gripper groove. The top surface of the square block, located on the other side of the mounting groove, is provided with a pick-and-place groove. The top surface of the square block, located on the other side of the mounting groove, is provided with a second positioning groove and a third positioning groove. The second and third positioning grooves are perpendicular to each other and are connected to the pick-and-place groove. The bottom of the second positioning groove is provided with a first rivet hole, and the bottom of the third positioning groove is provided with a second rivet hole.

2. The automatic processing device for relay composite contacts according to claim 1, characterized in that: The clamping structure includes a hollow box, with arc-shaped spring pieces fixedly connected to both sides of the hollow box. A ball head is fixedly connected to the top surface of the hollow box. A first terminal storage slot and a second terminal storage slot are respectively provided on the top surface of the hollow box and on both sides of the ball head. A pressing rod is slidably connected inside the ball head. A trapezoidal block is fixedly connected to the bottom surface of the pressing rod. A reset damping rod is fixedly connected to the top surface of the trapezoidal block and between the inner walls of the hollow box. An extension block is fixedly connected to one side of the pressing rod. Guide sleeves are symmetrically fixedly connected to the inner walls of the hollow box. A blocking rod is slidably connected inside the guide sleeve. A blocking damping rod is fixedly connected to one side of the blocking rod and between the guide sleeves. A square hole is provided on one side of the blocking rod. Unlocking holes are symmetrically provided on one side of the hollow box.

3. The automatic processing device for relay composite contacts according to claim 2, characterized in that: The clamping structure further includes a swing block, a locking damping rod, and an auxiliary damping rod. The locking damping rod and the auxiliary damping rod are symmetrically fixedly connected to the bottom surface of the hollow box. The swing block is symmetrically rotatably connected to the bottom surface of the hollow box. One end of the locking damping rod is fixedly connected to an inclined block. One side of the inclined block is fixedly connected to a connecting rod. One end of the connecting rod is fixedly connected to a first semi-arc plate. The surface of the connecting rod is rotatably connected to the swing block through a first angle rod. The top surface of the swing block is rotatably connected to a second semi-arc plate through a second angle rod. One end of the auxiliary damping rod is fixedly connected to the second semi-arc plate.

4. The automatic processing device for relay composite contacts according to claim 3, characterized in that: The feeding and conveying assembly includes a first feeding column, a second feeding column, and a robotic arm. A feeding motor is fixedly connected to the top surface of the first feeding column. The output end of the feeding motor is rotatably connected to a main sprocket via a worm gear and worm wheel. The top surface of the worktable is respectively equipped with a second feeding column and a robotic arm. A driven sprocket is rotatably connected to the upper part of the second feeding column. The main sprocket is rotatably connected to the driven sprocket via a feeding chain. Clamping components are arrayed on the bottom surface of the feeding chain.

5. The automatic processing device for relay composite contacts according to claim 4, characterized in that: The clamping component includes a hollow box. Hollow boxes are fixedly connected at equal intervals to the bottom surface of the feeding chain. Clamping damping rods are symmetrically fixedly connected inside the hollow box. An arc-shaped clamping block is fixedly connected to one end of each clamping damping rod. Stabilizing rods are fixedly connected to both sides of the hollow box.

6. The automatic processing device for relay composite contacts according to claim 5, characterized in that: The first terminal feeding assembly includes a terminal vibratory feeder, a terminal conveyor belt, a support column, a support rod, and a material handling component. The top surface of the workbench is fixedly connected to the terminal vibratory feeder, the terminal conveyor belt, the support column, and the support rod. The unloading end of the terminal vibratory feeder is fixedly connected to the terminal conveyor belt. The unloading end of the terminal conveyor belt is fixedly connected to the support column and the support rod. The top surface of the support column is fixedly connected to a terminal block. A feeding hole is provided on one side of the terminal block, and a vertical hole is provided inside the terminal block. A linear cylinder is fixedly connected to one side of the support rod, and a vertical push block is fixedly connected to the output end of the linear cylinder. A material handling component is installed on the top surface of the workbench, located on one side of the support column.

7. The automatic processing device for relay composite contacts according to claim 6, characterized in that: The material handling component includes a material handling frame, which is fixedly connected to the top surface of the workbench. A translation rail is fixedly connected to one side of the material handling frame, and a translation block is slidably connected to one side of the translation rail. A lifting cylinder is fixedly connected to one side of the translation block, and a vacuum terminal block is fixedly connected to the output end of the lifting cylinder. A terminal slot is provided on the bottom surface of the vacuum terminal block. The second terminal feeding assembly adopts the same structure as the first terminal feeding assembly.

8. The automatic processing device for relay composite contacts according to claim 7, characterized in that: The first rivet feeding assembly includes a rivet vibratory feeder, a rivet conveyor belt, a feeding platform, and a feeding component. The top surface of the workbench is respectively equipped with the rivet vibratory feeder, the rivet conveyor belt, and the feeding platform. The rivet conveyor belt is installed at the unloading end of the rivet vibratory feeder, and the feeding platform is installed at the unloading end of the rivet conveyor belt. A material picking block and a conveying pneumatic rod are respectively fixedly connected to both ends of the top surface of the feeding platform. The top surface of the material picking block is respectively provided with a long groove and a feeding groove. The two ends of the feeding groove are respectively connected to the long groove and the rivet conveyor belt. A long plate is fixedly connected to the output end of the conveying pneumatic rod. The long plate slides in the long groove. A rivet hole is provided on the upper part of one side of the long plate. The feeding component is installed on the top surface of the workbench and on the side of the feeding platform.

9. An automatic processing device for relay composite contacts according to claim 8, characterized in that: The feeding component includes a bracket, the top surface of the workbench is fixedly connected to the bracket, a forward extension rail is installed on one side of the bracket, a forward extension slider is slidably connected to one side of the forward extension rail, a material-picking pneumatic rod is fixedly connected to one side of the forward extension slider, a vacuum rod is fixedly connected to the output shaft end of the material-picking pneumatic rod, and a suction hole is provided on the bottom surface of the vacuum rod; the second rivet feeding component adopts the same structure as the first rivet feeding component.

10. An automatic processing device for relay composite contacts according to claim 9, characterized in that: The first pressing assembly includes a column and a fixed frame. The column is fixedly connected to the top surface of the worktable. A U-shaped groove is provided on the upper part of one side of the column. A downward pressing pneumatic rod is fixedly connected to the top surface of the column. A downward pressing column is fixedly connected to the output end of the downward pressing pneumatic rod. A fixed frame is fixedly connected to the top of the inner cavity of the worktable. An upward pressing pneumatic rod is fixedly connected to the bottom surface of the fixed frame. An upward pressing rod is fixedly connected to the output end of the upward pressing pneumatic rod. An upward pressing column is fixedly connected to the top surface of the upward pressing rod. One end of the upward pressing rod passes through the worktable and is slidably connected to the worktable. The second pressing assembly adopts the same structure as the first pressing assembly.

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