Automatic plastic wrapping equipment for skeleton pins

Abstract

The utility model relates to motor rotor production equipment technical field, concretely is a kind of skeleton automatic plastic insertion pin equipment, including skeleton feeding part, it includes skeleton storage feed arrangement, transfer mechanism and skeleton displacement mechanism, transfer mechanism has jacking assembly;Portal frame, portal frame is equipped with first feeding mechanism and second feeding mechanism;First feeding mechanism is equipped with clamping jig and ejector assembly;Second feeding mechanism is equipped with skeleton clamping assembly and clamping fixed component;Injection molding machine, skeleton is sent to injection molding machine by first feeding mechanism, so that injection molding machine will molding compound injection molding in skeleton;Pin part, it includes pin guiding and cutting mechanism and turbine needle pushing mechanism. The utility model realizes the full automation process of skeleton feeding, injection molding and pin by the synergistic effect of each part, improves production efficiency, reduces artificial cost, guarantees the quality and consistency of product.

Description

Technical Field

[0001] This utility model relates to the technical field of motor rotor production equipment, specifically to an automatic plastic-coated pin insertion device for a frame. Background Technology

[0002] The production of motor rotors on the market involves manually placing silicon steel sheets one by one into a plastic mold, or using semi-automatic feeding to injection mold a skeleton model containing silicon steel sheets. Then, a pin insertion machine is used to manually insert pins into the skeleton model. This process requires the assistance of staff, which may cause errors and is inefficient. The silicon steel sheets are fed slowly during injection molding, resulting in a long injection cycle. This can easily lead to problems such as insufficient glue in the product, insecure pin insertion, and a high defect rate of motor rotors.

[0003] To address this, fully automated skeleton coating and pin insertion equipment has emerged on the market. For example, Chinese Patent No. 2018106743595 discloses a machine and method for processing iron cores. This machine includes an injection molding machine and a winding frame. A mold is fixedly connected to the center of the top surface of the injection molding machine, and a gantry frame is fixedly connected to the top surface of the injection molding machine. An iron core unloading assembly is fixedly connected to the center of the left side of the top surface of the injection molding machine. The iron core unloading assembly includes four support legs, and a first guide rail is fixedly connected to the top of the side of each support leg. This invention, through the coordinated use of the iron core unloading assembly, the iron core feeding and mold insertion assembly, a stepper motor, a synchronous gear, a pressure pin gear, a cutting pin motor, and a product feeding and pin insertion assembly, enables automated production of iron cores. This significantly increases the production efficiency of iron cores and solves the problem of long production times caused by the inability to automate iron core production.

[0004] However, the aforementioned equipment does not provide precise positioning and fixation of the silicon steel sheet during the plastic coating and pin insertion processes, which may result in uneven plastic coating. In the pin insertion stage, pin misalignment is prone to occur, leading to damage or misalignment, which in turn affects the overall performance and service life of the motor rotor. Utility Model Content

[0005] This utility model addresses the technical problems existing in the prior art by providing an automatic plastic coating and pin insertion device for the frame. This solves the problems of insufficient precision in positioning and fixing of the silicon steel sheet during the plastic coating and pin insertion process, which may lead to uneven plastic coating; and the tendency for pins to shift during insertion, resulting in damage or misalignment, thus affecting the overall performance and service life of the motor rotor.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: an automatic plastic-coated pin insertion device for skeletons, comprising... The skeleton feeding section includes a skeleton storage and feeding device, a transfer mechanism for conveying skeletons to a designated position, and a skeleton displacement mechanism for transferring skeletons provided by the skeleton storage and feeding device to a fixture of the transfer mechanism. The transfer mechanism has a lifting component that lifts the skeletons from the fixture to a certain height. The gantry frame is equipped with a first feeding mechanism and a second feeding mechanism; the first feeding mechanism is equipped with a clamping fixture that cooperates with the lifting component to clamp the skeleton and an ejection component that pushes the skeleton out of the clamping fixture; the second feeding mechanism is equipped with a skeleton clamping component and a clamping and fixing component that cooperates with the skeleton clamping component to fix the skeleton. In the injection molding machine, the first feeding mechanism sends the skeleton to the injection molding machine, so that the injection molding machine can inject the rubber material into the skeleton; The pin insertion part includes a pin guiding and cutting mechanism and a turbine pin pushing mechanism that pushes the pin through the pin guiding and cutting mechanism and inserts it into the skeleton; The turbine pusher mechanism includes a hollowed-out roller seat, a needle insertion plate at the bottom of the roller seat, several equally spaced needles arranged side by side inside the roller seat to push the rollers, a needle guide plate between two adjacent needle pusher rollers, the needle guide plate having guide holes through which the needles pass, and the needle insertion plate having corresponding insertion holes; each needle pusher roller has a meshing transmission gear at one end, and a turbine at the other end of one needle pusher roller, and a transmission worm gear meshing with the turbine and a drive component driving the transmission worm gear to rotate on the roller seat on one side of the turbine; The pin guiding and cutting mechanism includes a guide pin plate located at the upper end of the roller seat and a cutting module fixed to the guide pin plate. The guide pin plate has at least two rows of skeleton slots, each skeleton slot has a pin hole, and multiple first needle holes for the pin to pass through are opened along the circumference of the pin hole in the skeleton slot. When the second feeding mechanism moves the injection-molded skeleton above the guide pin plate, the driving component drives the insert pin to push the roller to roll. The insert pin is pushed upward by the roller and extends a certain distance beyond the first needle hole before stopping to prevent the insert pin from deforming when inserted into the skeleton due to excessive length. The second feeding mechanism then moves the skeleton downward so that the insert pin is inserted into the skeleton. The driving component then drives the insert pin to push the roller to roll again, and the insert pin is pushed upward by the roller and moves upward until the insert pin is in place before stopping. At the same time, the second feeding mechanism moves the skeleton downward again to the skeleton slot for positioning, and then the cutting module cuts off the insert pin.

[0007] Furthermore, the skeleton displacement mechanism includes a longitudinal support with a longitudinal guide rail assembly, a gripping component slidably mounted on the longitudinal guide rail assembly, and a lead screw and motor drive mechanism for driving the gripping component to reciprocate along the longitudinal guide rail assembly; the gripping component includes a movable base, the movable base is provided with a telescopic cylinder whose output end passes through the movable base, the output end of the telescopic cylinder is fixedly mounted with a mounting plate, and the bottom of the mounting plate is provided with gripping members equal to the number of materials fed at one time by the skeleton storage and feeding device, each gripping member being inclined in the same direction at the bottom of the mounting plate; the movable base on both sides of the telescopic cylinder is slidably connected to the mounting plate to ensure the mounting plate moves up and down. The first stabilizing guide is stable during movement. Each first stabilizing guide has a moving seat on one side with a first elastic buffer that penetrates the moving seat and can contact the mounting plate. The length of the mounting plate is greater than the length of the moving seat, and the lengths of the two ends of the mounting plate extending out of the moving seat are equal. The extended portion of the mounting plate is provided with a second elastic buffer that penetrates the mounting plate. The bottom ends of the mounting plate are also provided with first positioning columns. When the telescopic cylinder drives the mounting plate to descend, the first positioning columns are inserted into the positioning holes of the jig of the skeleton storage and feeding device or the skeleton displacement mechanism. The bottom end of the first positioning column is set as a circular surface.

[0008] Furthermore, the gripper includes a slanted plate fixedly embedded in the mounting plate at the top, a pneumatic gripper fixed to the side of the slanted plate, a clamping plate on the two grippers of the pneumatic gripper, and elastic clamping blocks on the opposite end faces of the two clamping plates. The end faces of the elastic clamping blocks are set as arc-shaped surfaces that match the skeleton, and the lower end face of the elastic clamping block on the side away from the elastic clamping block is set as a slanted surface that gradually slopes outward from bottom to top.

[0009] Furthermore, the transfer mechanism includes an electric cylinder base, on which an electric cylinder is mounted. Guide rails are provided on both sides of the electric cylinder. The electric cylinder is provided with an L-shaped fixture slide plate that cooperates with the two guide rails. The fixture is fixed to the end of the L-shaped fixture slide plate. The fixture includes a fixture connecting seat that connects to the L-shaped fixture slide plate. The fixture connecting seat has a slot, in which a skeleton positioning fixture is provided. Guide posts that connect to the lifting assembly are provided around the bottom of the fixture connecting seat.

[0010] Furthermore, the lifting assembly includes a fixed plate connected to the end of the guide column, a movable plate slidably connected to the guide column via a linear bearing, and a lead screw electric cylinder fixed to the fixed plate and driving the movable plate to move up and down along the guide column. The fixed plate is provided with guide rods fixedly connected to the skeleton positioning fixture around its perimeter, and the movable plate is slidably engaged with the guide rods. The movable plate is provided with a punch plate, and multiple push rods are arranged on the punch plate to lift the skeleton through the skeleton positioning fixture. The bottom of the punch plate is provided with a punch base plate for fixing the push rods.

[0011] Furthermore, the skeleton clamping assembly includes T-shaped slide blocks respectively slidably mounted on both sides of the gantry frame. Two T-shaped slide blocks are fitted with material-picking pull plates, and the bottom of the two material-picking pull plates are connected to longitudinal plates. One of the T-shaped slide blocks is equipped with a pulling cylinder to push the material-picking pull plate. The longitudinal plate has a hollowed-out center, and a transverse slide rail extending along its width is located at the bottom of the longitudinal plate. Clamps that can move close together are mounted on the transverse slide rail. Telescopic cylinders are located on both sides of the longitudinal plate to drive the clamps closer to the skeleton clamping area. The two clamps in the hollowed-out area are positioned opposite each other. The side is provided with a U-shaped groove to accommodate the skeleton, and a U-shaped platform is provided at the lower end of the U-shaped groove. When the injection molding machine ejects the skeleton, the pulling cylinder pushes the material picking plate to move the longitudinal plate down, so that the skeleton is located in the hollow area. The two telescopic cylinders drive the clamps to move closer together. The U-shaped groove passes through the ejector pin of the injection molding machine, so that the skeleton is located in the U-shaped groove. The U-shaped platform is located at the lower end of the skeleton. When the pulling cylinder pulls the material picking plate up, the U-shaped platform pulls the skeleton away from the ejector pin, and the clamping and fixing component fixes the skeleton in the U-shaped groove.

[0012] Furthermore, the clamping and fixing assembly includes a fixed span plate fixed on two T-shaped slides and a pressing cylinder disposed on the fixed span plate with its output end passing through the fixed span plate; the output end of the pressing cylinder is provided with a frame, the bottom of the frame is provided with a pin plate, the bottom surface of the pin plate is provided with fixed pins corresponding to each U-shaped groove, and the pin plate is provided with second positioning columns on both sides; the pin plate on one side of the second positioning column is provided with a slide rod, and the two ends of the longitudinal plate are provided with guide seats that cooperate with the slide rod, and the slide rod slides through the guide seats; the fixed span plates on both sides of the pressing cylinder are provided with second stabilizing guide members connected to the frame; the fixed pin includes a connecting post fixed to the pin plate, the connecting post is provided with a plug-in post coaxial with the connecting post, the plug-in post is inserted into the frame, and the circumferential end face of the plug-in post is provided with a circular convex edge extending along the axial direction.

[0013] Furthermore, the pin guide plate includes an upper pin guide plate and a lower pin guide plate. Two adjacent pin push rollers are located between the upper pin guide plate and the lower pin guide plate. The end faces of the upper pin guide plate and the lower pin guide plate near one end are set as transition slopes, and the transition slopes of the upper pin guide plate and the lower pin guide plate can contact the end faces of the corresponding adjacent pin push rollers.

[0014] Furthermore, the back of the guide plate is provided with a movable receiving cavity; the cutting module includes a cutting block slidably disposed in the movable receiving cavity, a die-cutting rod connected to the cutting block through the guide plate, a cutting arm connected to the die-cutting rod, a cutting arm push block pivotally connected to one end of the cutting arm, and a cutting cylinder fixed to the guide plate and whose output end is connected to the cutting arm push block; the cutting arm near the die-cutting rod is provided with a boss, and the side wall of the guide plate is provided with a movable cavity for the boss to move, and the boss is pivotally connected to the guide plate through a rotating shaft; the cutting block is provided with a through hole corresponding to the ejector pin hole, and the circumferential edge of the through hole is provided with a second needle hole corresponding to the first needle hole, and the cutting arm is driven by the cutting cylinder to drive the die-cutting rod, and the die-cutting rod pushes the cutting block to make the first needle hole and the second needle hole misaligned to cut the insertion pin.

[0015] Furthermore, the injection molding machine includes a support, a movable module, an upper movable mold module, and a lower mold module. The upper movable mold module and the movable module are mounted on the support, with the movable module located below the upper movable mold module and the lower mold module located on the movable module. The movable module drives the lower mold module to reciprocate along the second feeding mechanism and the upper movable mold module.

[0016] The beneficial effects of adopting the above solution are that the automated skeleton encapsulation and pin insertion equipment, through its highly integrated and automated design, effectively solves the problems of low efficiency and high product defect rate in traditional production methods. The skeleton feeding section, through the coordinated work of the skeleton storage and feeding device, the transfer mechanism, and the skeleton displacement mechanism, achieves precise and rapid skeleton feeding, greatly improving production efficiency. Simultaneously, the lifting component design in the transfer mechanism ensures the stability and accuracy of the skeleton during the transfer process. The first and second feeding mechanisms on the gantry have clearly defined roles: the first feeding mechanism is responsible for clamping the skeleton from the fixture and delivering it to the injection molding machine, while the second feeding mechanism is responsible for moving the injection-molded skeleton to the designated position for pin insertion. This design not only improves the accuracy of feeding but also avoids errors and damage that may be caused by manual operation. The pin insertion section features a turbine pin-pushing mechanism. This mechanism, through the precise coordination of the pin-pushing roller and pin guide plate, achieves accurate pin guidance, cutting, and feeding, ensuring uniform pin delivery and guaranteeing consistent pin height for each insertion. Simultaneously, the guide plate and cutter module in the pin guiding and cutting mechanism are rationally designed to ensure the accuracy and stability of the pins when inserted into the skeleton, preventing issues such as pin misalignment, damage, or incorrect insertion. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective; Figure 3 This is a diagram showing the positional relationship between the transfer mechanism and the skeleton displacement mechanism in this utility model; Figure 4 This is a schematic diagram of the skeleton displacement mechanism in an embodiment of the present invention; Figure 5 This is a schematic diagram of the arrangement of the gripping components in an embodiment of this utility model; Figure 6 This is a schematic diagram of the transfer mechanism in an embodiment of the present invention; Figure 7 This is a diagram showing the positional relationship between the first feeding mechanism and the second feeding mechanism in an embodiment of this utility model. Figure 8 for Figure 7 A diagram from another angle; Figure 9This is a schematic diagram of the second feeding mechanism at one angle in an embodiment of the present invention; Figure 10 for Figure 9 Enlarged structural diagram at point A; Figure 11 This is a schematic diagram of the second feeding mechanism from another angle in an embodiment of this utility model; Figure 12 This is a schematic diagram of the pin portion in an embodiment of the present invention; Figure 13 This is a cross-sectional view of the pin portion in an embodiment of this utility model; Figure 14 This is a schematic diagram of the pin guide and cutting mechanism in an embodiment of the present invention. Detailed Implementation

[0018] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0019] The present invention provides the following preferred embodiments. like Figure 1 and Figure 2 As shown, an automatic plastic coating and pin insertion device for skeletons includes a worktable 10 and a skeleton feeding part 20, a gantry frame 30, an injection molding machine 40 and a pin insertion part 50 respectively disposed on the worktable 10.

[0020] The skeleton feeding section 20 includes a skeleton storage and feeding device 21, a transfer mechanism 22, and a skeleton displacement mechanism 23. The skeleton storage and feeding device 21 is located on the side of the workbench 10. The transfer mechanism 22 has a lifting component 220 that lifts the skeleton from the fixture to a certain height. The gantry frame 30 is provided with a first feeding mechanism 31 and a second feeding mechanism 32. The first feeding mechanism 31 is provided with a clamping fixture 310 that cooperates with the lifting component 220 to clamp the skeleton and an ejection component 311 that pushes the skeleton out of the clamping fixture 310. The second feeding mechanism 32 is provided with a skeleton clamping component 320 and a clamping and fixing component 321 that cooperates with the skeleton clamping component 320 to fix the skeleton. The injection molding machine 40 is fed to the injection molding machine 40 by the first feeding mechanism 31, so that the injection molding machine 40 injects the plastic material into the skeleton. Figure 12As shown, the pin insertion part 50 includes a pin guiding and cutting mechanism 51 and a turbine pin pushing mechanism 52 that pushes the pin through the pin guiding and cutting mechanism 51 and inserts it into the skeleton. The turbine pin pushing mechanism 52 includes a hollowed-out roller seat 520, a pin insertion plate at the bottom of the roller seat 520, and several equally spaced pin pushing rollers 521 arranged side by side inside the roller seat 520. A pin guide plate 522 is provided between two adjacent pin pushing rollers 521. The pin guide plate 522 has guide holes for the pins to pass through, and the pin insertion plate has insertion holes corresponding to the guide holes. Each pin pushing roller 521 has a meshing transmission gear 5 at one end. 23, one of the needle pushes the other end of the roller 521 and is provided with a turbine 524. The roller seat 520 located on one side of the turbine 524 is provided with a transmission worm gear 525 that meshes with the turbine 524 and a drive member 526 that drives the transmission worm gear 525 to rotate. The needle guide and cutting mechanism 51 includes a guide plate 510 located at the upper end of the roller seat 520 and a cutter module 511 fixed to the guide plate 510. The guide plate 510 is provided with at least two rows of skeleton slots 512. Each skeleton slot 512 is provided with a pin hole 513. Multiple first needle holes 514 for needles to pass through are opened along the circumference of the pin hole 513 in the skeleton slot 512.

[0021] In summary, the working principle of this automatic plastic-coating and pin-insertion device for skeletons is as follows: the operator places the skeleton into the skeleton storage and feeding device 21, which then supplies the skeleton. The skeleton displacement mechanism 23 grips the skeleton and transfers it to the fixture of the transfer mechanism 22. After fixing the skeleton, the transfer mechanism 22 moves it below the first feeding mechanism 31. Once the skeleton is transported to the designated position, the lifting component 220 lifts it to a certain height, causing the skeleton part... Simultaneously, the clamping fixture 310 of the first feeding mechanism 31 moves downward to clamp the skeleton on the transfer mechanism 22 and transport the skeleton to the injection molding machine 40. The ejection assembly 311 on the first feeding mechanism 31 pushes the skeleton out of the clamping fixture 310 and into the mold of the injection molding machine 40, where the injection molding machine 40 performs injection molding. After the mold is opened after injection molding, the second feeding mechanism 32 is activated, and the skeleton clamping assembly 320 moves downward to clamp the skeleton ejected from the mold in the injection molding machine 40. Meanwhile, the clamping and fixing component 321, in conjunction with the skeleton clamping component 320, positions the skeleton to prevent it from moving and to prevent problems such as misalignment or incomplete insertion during subsequent pin insertion. When the second feeding mechanism 32 moves the injection-molded skeleton above the guide pin plate 510, the driving component 526 drives the pin to push the roller 521 to roll. The pin is pushed upward by the pin-driven roller 521, extending a certain distance beyond the first needle hole 514 before stopping, to prevent the pin from being too long and deforming when inserted into the skeleton. The second feeding mechanism 32 drives the skeleton to move down, so that the pin is inserted into the skeleton; then the driving component 526 drives the pin to push the roller 521 to roll, and the pin is pushed up by the pin-driven roller 521 to move up, so that the pin is inserted into place and then stops. At the same time, the second feeding mechanism 32 drives the skeleton to move down to the skeleton slot 512 for positioning. Then the cutting module 511 cuts the pin, completing the pin insertion. Then the second feeding mechanism 32 conveys the finished product to the unloading channel, and the finished product is sent out through the unloading channel.

[0022] Through the above design, this automated skeleton encapsulation and pin insertion equipment achieves a fully automated process for skeleton feeding, injection molding, and pin insertion, greatly improving production efficiency and product quality. The skeleton feeding section 20, through the precise cooperation of the transfer mechanism 22 and the skeleton displacement mechanism 23, ensures accurate transfer of the skeleton from storage to the processing position, reducing manual intervention and operational errors. The first feeding mechanism 31 and the second feeding mechanism 32 on the gantry 30 have clearly defined functions: the former is responsible for gripping the skeleton from the transfer mechanism 22 and sending it to the injection molding machine 40 for injection molding, while the latter, after injection molding, precisely grips and fixes the skeleton, preparing it for the subsequent pin insertion process. In the injection molding machine 40, the precise feeding by the first feeding mechanism 31 ensures that the skeleton accurately enters the mold, resulting in a stable and reliable injection molding process and consistent product quality. The pin insertion section 50, through the coordinated operation of the turbine pin pushing mechanism 52 and the pin guiding and cutting mechanism 51, ensures that the pins can be accurately and stably inserted into the skeleton, and the pin length is precisely controlled, avoiding deformation problems caused by excessively long pins. At the same time, the cutting module 511 enables the pins to be quickly cut off after they are inserted, improving production efficiency.

[0023] like Figure 3 , Figure 4 and Figure 5 As shown, the skeleton displacement mechanism 23 is used to transfer the skeleton provided by the skeleton storage and feeding device 21 to the fixture of the transfer mechanism 22. In this embodiment, the skeleton displacement mechanism 23 includes a longitudinal support 230 with a longitudinal guide rail group, a gripping component 231 slidably disposed on the longitudinal guide rail group, and a screw and motor drive mechanism 232 that drives the gripping component 231 to reciprocate along the longitudinal guide rail group. The longitudinal support 230 is fixed on the worktable 10. The screw and motor drive mechanism 232 drives the gripping component 231 to reciprocate along the longitudinal guide rail group to the skeleton storage and feeding device 21 and the transfer mechanism 22, so that the gripping component 231 can pick up and put down the material. The gripping component 231 includes a movable base 2310, which slides with the longitudinal guide rail assembly. The movable base 2310 is equipped with a telescopic cylinder 2311 whose output end passes through the movable base 2310. The output end of the telescopic cylinder 2311 is fixedly mounted with a mounting plate 2312. The bottom of the mounting plate 2312 is equipped with gripping components 2313, which are equal in number to the number of skeletons fed at one time by the skeleton storage and feeding device 21. In this embodiment, the skeleton storage and feeding device 21 feeds 8 skeletons at one time, and the 8 skeletons are symmetrically arranged in two rows of 4 skeletons each. The gripping members 2313 are also symmetrically arranged in two rows, with four in each row. Each gripping member 2313 is inclined in the same direction at the bottom of the mounting plate 2312. The movable seats 2310 located on both sides of the telescopic cylinder 2311 are slidably provided with first stabilizing guide members 2314 that are connected to the mounting plate 2312 to ensure that the mounting plate 2312 moves smoothly up and down. Each movable seat 2310 on one side of the first stabilizing guide member 2314 is provided with a first elastic buffer member 2315 that penetrates the movable seat 2310 and can contact the mounting plate 2312. In operation, the telescopic cylinder 2311 drives the mounting plate 2312 downwards, thereby bringing the gripping component 2313 closer to the skeleton on the skeleton storage and feeding device 21. Once the gripping component 2313 reaches the appropriate position, it can grasp the skeleton. During the up-and-down movement of the mounting plate 2312, the first stabilizing guide 2314 ensures the smooth movement of the mounting plate 2312, preventing swaying or deviation, thus ensuring that the gripping component 2313 can accurately grasp the skeleton. The first elastic buffer 2315 provides a buffering effect when the mounting plate 2312 moves downwards to contact the skeleton or moves upwards to reset, reducing the impact force on the equipment and extending its service life. Furthermore, since the gripping component 2313 and the skeleton storage and feeding device 21 feed the same quantity of skeletons at a time and are positioned accordingly, multiple skeletons can be grasped at once, greatly improving production efficiency.

[0024] Furthermore, the length of the mounting plate 2312 is greater than the length of the movable seat 2310, and the lengths of the two ends of the mounting plate 2312 extending beyond the movable seat 2310 are equal. The extended portion of the mounting plate 2312 is provided with a second elastic buffer 2316 penetrating through the mounting plate 2312. The bottom ends of the mounting plate 2312 are also provided with first positioning columns 2317. When the telescopic cylinder 2311 drives the mounting plate 2312 to descend, the first positioning columns 2317 are inserted into the positioning holes of the jig in the skeleton storage and feeding device 21 or the skeleton displacement mechanism 23. The bottom end of the first positioning column 2317 is circular. This design makes the insertion of the first positioning column 2317 into the positioning hole smoother, reducing friction and collisions caused by inaccurate positioning, and further improving the stability and accuracy of equipment operation. The second elastic buffer 2316 provides additional cushioning protection when the mounting plate 2312 contacts the external structure, preventing equipment damage caused by excessive compression, and also absorbing some vibration energy, making the equipment more stable during operation.

[0025] In an optional embodiment, the gripper 2313 includes a ramp 23130, and the bottom of the mounting plate 2312 is provided with an inlay groove. The top of the ramp 23130 is fixedly inlaid in the inlay groove. A pneumatic gripper 23131 is fixed to the side of the ramp 23130. The two grippers of the pneumatic gripper 23131 are provided with clamping plates 23132. The opposite end faces of the two clamping plates 23132 are provided with elastic clamping blocks 23133. The end faces of the elastic clamping blocks 23133 are set as arc-shaped surfaces that match the skeleton. The lower end face of the elastic clamping block 23133 on the side away from the elastic clamping block 23133 is set as a sloped surface that gradually slopes outward from bottom to top. The pneumatic gripper 23131 can drive the two grippers to move closer or further away from each other, thereby driving the two clamping plates 23132 and the elastic clamping blocks 23133 thereon to open and close. When the pneumatic gripper 23131 drives the two claws to approach each other, the two elastic clamping blocks 23133 will tightly clamp the skeleton. Since the end face of the elastic clamping block 23133 is set as an arc surface that matches the skeleton, it can better fit the skeleton, increase the contact area, improve the stability of clamping, and prevent the skeleton from slipping during the gripping process. The lower end face of the elastic clamping block 23133 on the side opposite to the elastic clamping block 23133 is set as a beveled surface that gradually slopes outward from bottom to top. This design allows the clamping plate 23132 to smoothly enter the guide groove set in the fixture when gripping the skeleton, improving the gripping accuracy of the pneumatic gripper 23131.

[0026] like Figure 6As shown, the transfer mechanism 22 is used to receive the skeleton conveyed by the skeleton displacement mechanism 23 and transfer the skeleton to the material picking area of ​​the first feeding mechanism 31. The transfer mechanism 22 includes an electric cylinder base 221 fixed on the workbench 10. An electric cylinder 222 is provided on the electric cylinder base 221. Guide rails are provided on both sides of the electric cylinder 222. The electric cylinder 222 is provided with an L-shaped fixture slide plate 223 that cooperates with the two guide rails. The fixture is fixed to the end of the L-shaped fixture slide plate 223. The fixture includes a fixture connecting seat 224 connected to the L-shaped fixture slide plate 223. The fixture connecting seat 224 has a slot. A skeleton positioning fixture 225 is provided in the slot. Guide posts 226 connected to the lifting assembly 220 are provided around the bottom of the fixture connecting seat 224. The L-shaped fixture slide plate 223 is driven by the electric cylinder 222 to move the fixture back and forth for feeding and receiving.

[0027] The lifting assembly 220 includes a fixed plate 2201 connected to the end of the guide post 226, a movable plate 2202 slidably connected to the guide post 226 via a linear bearing, and a screw electric cylinder 2203 fixed to the fixed plate 2201 and driving the movable plate 2202 to move up and down along the guide post 226. The fixed plate 2201 is provided with guide rods 2204 fixedly connected to the skeleton positioning fixture 225 around its perimeter. The movable plate 2202 is slidably engaged with the guide rods 2204. The movable plate 2202 is provided with a punch plate 2205. Multiple push rods 2206 that pass through the skeleton positioning fixture 225 and lift the skeleton are arranged on the punch plate 2205. The bottom of the punch plate 2205 is provided with a punch base plate for fixing the push rods 2206. When the lifting assembly 220 is working, the screw electric cylinder 2203 is activated, driving the movable plate 2202 to move upward along the guide post 226. Because the movable plate 2202 and the guide rod 2204 slide together, good stability is maintained during movement. As the movable plate 2202 rises, it drives the punch plate 2205 to move upward as well. The multiple push rods 2206 arranged on the punch plate 2205 pass through the skeleton positioning fixture 225, lifting the skeleton placed on the skeleton positioning fixture 225 upward. The punch base plate serves to fix the push rods 2206, ensuring that the push rods 2206 do not shift or shake during the lifting process, thus ensuring the accuracy and stability of the lifting action.

[0028] Injection molding machine 40 is used to inject and mold rubber material into corresponding positions on the skeleton. In this embodiment, injection molding machine 40 includes a support 41, a movable module 42, an upper movable mold module (not shown in the figure), and a lower mold module 43. The support 41 is located on the side of the worktable 10. The upper movable mold module (not shown in the figure) and the movable module 42 are located on the support 41. The movable module 42 is located below the upper movable mold module (not shown in the figure), and the lower mold module 43 is located on the movable module 42. The movable module 42 drives the lower mold module 43 to reciprocate along the second feeding mechanism 32 and the upper movable mold module (not shown in the figure). During operation, the movable module 42 drives the lower mold module 43 to move to the designated feeding area. At that time, the first feeding mechanism 31 moves the skeleton to directly above the lower mold module 43 and moves it down, so that the ejector component 311 pushes the skeleton on the clamping fixture 310 into the mold of the lower mold module 43. After the feeding is completed, the first feeding mechanism 31 resets. The moving module 42 drives the lower mold module 43 to move directly below the upper moving mold module (not shown in the figure). The upper moving mold module (not shown in the figure) and the lower mold module 43 close the mold for injection molding. After the injection molding is completed, the moving module 42 drives the lower mold module 43 to move to the designated material picking area (i.e., the loading area). The second feeding mechanism 32 moves the injection-molded skeleton to the pin insertion part 50, and the pin insertion operation is performed through the pin insertion part 50.

[0029] like Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11As shown, the second feeding mechanism 32 is used to transport the injection-molded skeleton and position it. The second feeding mechanism 32 also includes a drive cylinder 33 fixed on the gantry frame 30, which drives the skeleton clamping assembly 320 to reciprocate along the slide rail on the gantry frame 30. In this embodiment, the skeleton clamping assembly 320 includes T-shaped slide blocks 3201 respectively slidably disposed on both sides of the gantry frame 30. Vertical guide rails are provided on the sides of the two T-shaped slide blocks 3201. Material picking pull plates 3202 are slidably disposed on the two T-shaped slide blocks 3201. The bottom of the two material picking pull plates 3202 is connected to a longitudinal plate 3203. One T-shaped slide block 3201 is provided with a pulling cylinder 3204 to push the material picking pull plate 3202, and the other T-shaped slide block 3201 is connected to the output end of the drive cylinder 33. The longitudinal plate 3203 is hollowed out in the middle, and the bottom ends of the longitudinal plate 3203 are provided with horizontal extensions extending along the width. The slide rail has collapsible clamps 3205 that can move close together. Telescopic cylinders are located on both sides of the vertical plate 3203 to drive the clamps 3205 closer to the clamping frame. U-shaped grooves 3206 for accommodating the frame are located on opposite sides of the two clamps 3205 in the hollowed-out area. A U-shaped platform 3207 is located at the lower end of the U-shaped groove 3206. When the lower mold assembly 43 pushes out the frame, the pull cylinder 3204 pushes the material-retrieving pull plate 3202 to move the vertical plate... The plate 3203 moves down, so that the skeleton is located in the hollow area. The two telescopic cylinders drive the clamps 3205 to move closer together. The U-shaped groove 3206 passes through the ejector pin of the injection molding machine 40, so that the skeleton is located in the U-shaped groove 3206. The U-shaped platform 3207 is located at the lower end of the skeleton. When the pulling cylinder 3204 pulls the material picking plate 3202 to rise, the U-shaped platform 3207 pulls the skeleton away from the ejector pin. The clamping and fixing component 321 fixes the skeleton in the U-shaped groove 3206. In other words, the second feeding mechanism 32 achieves accurate delivery and reliable positioning of the injection-molded skeleton. The cooperation between the T-shaped slide 3201 and the vertical guide rail assembly allows the material-taking pull plate 3202 to move stably in the vertical direction, thereby driving the longitudinal plate 3203 to move up and down. The pulling cylinder 3204 pushes the material-taking pull plate 3202 downward, allowing the skeleton to smoothly enter the hollow area in the middle of the longitudinal plate 3203. At this time, the two telescopic cylinders act simultaneously, driving the clamps 3205 to approach each other. Utilizing the structural features of the U-shaped groove 3206 and the U-shaped platform 3207, the clamps precisely pass through the ejector pins of the injection molding machine 40 and hold the skeleton. During the process of the pulling cylinder 3204 pulling the material-taking pull plate 3202 upward, the U-shaped platform 3207 effectively disengages the skeleton from the ejector pin, while the clamping and fixing component 321 further ensures the stability of the skeleton within the U-shaped groove 3206, providing a stable and accurate material supply for subsequent processing steps.

[0030] The clamping and fixing assembly 321 is used to fix the skeleton inside the U-shaped groove 3206, preventing the skeleton from moving and ensuring the accuracy and stability when inserting the pins. The clamping and fixing assembly 321 includes a fixing span plate 3210 fixed on two T-shaped slides 3201 and a pressing cylinder 3211 disposed on the fixing span plate 3210 with its output end passing through the fixing span plate 3210; the output end of the pressing cylinder 3211 is provided with a bracket 3212, and the bottom of the bracket 3212 is provided with a pin plate 3213. The bottom surface of the pin plate 3213 is arranged with fixed pins 3214 corresponding to each U-shaped groove 3206, and the sides of the pin plate 3213 are... A second positioning post 3215 is provided; a slide rod 3216 is provided on the ejector plate 3213 located on one side of the second positioning post 3215, and guide seats that cooperate with the slide rod 3216 are provided at both ends of the longitudinal plate 3203, and the slide rod 3216 slides through the guide seats; a second stabilizing guide member 3217 connected to the frame 3212 is slidably provided on the fixed span plate 3210 located on both sides of the pressing cylinder 3211; the fixed ejector 3214 includes a connecting post fixed to the ejector plate 3213, and a plug-in post coaxial with the connecting post passes through the connecting post. The plug-in post is inserted into the frame, and the circumferential end face of the plug-in post is provided with a circular convex edge extending along the axial direction; In other words, the downward-pressing cylinder 3211 drives the frame 3212 to move downward, causing the ejector plate 3213 to move the fixed ejector pin 3214, which is then inserted into the skeleton within the U-shaped groove 3206 to fix the skeleton. The round convex edge fits tightly against the inner wall of the skeleton's shaft hole, further enhancing the fixing effect of the fixed ejector pin 3214 on the skeleton and effectively preventing the skeleton from shifting or shaking during the insertion of the pins. The second stabilizing guide 3217 provides stable guidance for the up-and-down movement of the frame 3212, ensuring that when the downward-pressing cylinder 3211 pushes the frame 3212 downward, the frame 3212 can move accurately along the predetermined trajectory without tilting or jamming, thus ensuring that the fixed ejector pin 3214 can be accurately inserted into the corresponding part of the skeleton. The cooperation between the slide bar 3216 and the guide seat makes the pin plate 3213 move more smoothly during up and down movement, reducing potential damage to the skeleton caused by unstable movement, and also improving the working reliability and service life of the entire clamping and fixing assembly 321. Through the synergistic effect of these structures, the clamping and fixing assembly 321 can reliably fix the skeleton in the U-shaped groove 3206, providing a strong guarantee for the smooth progress of the subsequent pin insertion process. When the second positioning post 3215 moves to the guide plate 510, it inserts into the positioning hole opened in the guide plate 510, further improving the stability and accuracy of pin insertion and ensuring the precision of pin insertion.

[0031] like Figure 13As shown, in an optional embodiment, the pin guide plate 522 includes an upper pin guide plate 5220 and a lower pin guide plate 5221. Two adjacent pin push rollers 521 are located between the upper pin guide plate 5220 and the lower pin guide plate 5221. The end faces of the upper pin guide plate 5220 and the lower pin guide plate 5221 near one end are set as transition slopes, and the transition slopes of the upper pin guide plate 5220 and the lower pin guide plate 5221 can contact the end faces of the corresponding adjacent pin push rollers 521. Through this setting, when the two adjacent pin push rollers 521 roll, they can effectively push the pins to move. At the same time, the design of the transition slope can reduce the friction between the pin push rollers 521 and the pin guide plate 522 during the rolling process, reduce energy loss, and improve the operating efficiency of the entire pin insertion process. Moreover, this structure ensures that the pin pusher roller 521 is subjected to uniform force during rolling, avoiding unstable pin movement or jamming caused by uneven force, thus further improving the pin's accuracy and quality.

[0032] like Figure 14 As shown, in an optional embodiment, the back of the guide plate 510 is provided with a movable receiving cavity; the cutter module 511 includes a cutter block 5110 slidably disposed in the movable receiving cavity, a die-cutting rod 5111 passing through the guide plate 510 and connected to the cutter block 5110, a cutter arm 5112 connected to the die-cutting rod 5111, a cutter arm pusher block 5113 pivotally connected to one end of the cutter arm 5112, and a cutter cylinder 5114 fixed to the guide plate 510 and whose output end is connected to the cutter arm pusher block 5113; the cutter arm 5112 near one end of the die-cutting rod 5111 is provided with a boss 5115, and the side wall of the guide plate 510 is provided with a movable cavity for the boss 5115 to move, and the boss 5115 is pivotally connected to the guide plate 510 through a rotating shaft; the cutter block 5110 is provided with a through-hole corresponding to the ejector pin hole 513. The hole has a second needle hole corresponding to the first needle hole 514 on its circumferential edge. A cutting cylinder 5114 drives the cutting arm 5112, which in turn drives the die-cutting rod 5111. The die-cutting rod 5111 pushes the cutting block 5110, causing the first needle hole 514 and the second needle hole to misalign and cut the needle. In other words, the extension and retraction of the cutting cylinder 5114 precisely controls the movement distance and cutting timing of the cutting block 5110. When the output end of the cutting cylinder 5114 retracts, it pushes the cutting arm pusher 5113 to move. The cutting arm pusher 5113 drives the cutting arm 5112 to rotate around the pivot point. The boss 5115 on the cutting arm 5112 rotates within the movable cavity and achieves stable transmission through the rotating shaft, thereby causing the die-cutting rod 5111 to push the cutting block 5110 to slide within the movable receiving cavity. At this time, the originally aligned first needle hole 514 and the second needle hole are misaligned, reliably cutting off the needle located between them. This structural design not only ensures the smoothness and precision of the cutting action, but also effectively prevents the pin from deforming or developing burrs during the cutting process, significantly improving the quality and yield of pin processing.

[0033] In summary, the automatic plastic-coated pin insertion equipment for skeletons provided by this utility model precisely controls the pin feeding and cutting movements through the turbine pin pushing mechanism 52 and the pin guiding and cutting mechanism 51. This achieves the stability and accuracy of the pin delivery and cutting actions, effectively avoiding pin deformation or burr generation, improving product quality and yield. Through the coordinated work of various parts, the fully automated process of skeleton feeding, injection molding and pin insertion is realized, improving production efficiency, reducing labor costs, and ensuring product quality and consistency.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic plastic-coated insert device for skeletons, characterized in that, include The skeleton feeding section includes a skeleton storage and feeding device, a transfer mechanism for conveying skeletons to a designated position, and a skeleton displacement mechanism for transferring skeletons provided by the skeleton storage and feeding device to a fixture of the transfer mechanism. The transfer mechanism has a lifting component that lifts the skeletons from the fixture to a certain height. The gantry frame is equipped with a first feeding mechanism and a second feeding mechanism; the first feeding mechanism is equipped with a clamping fixture that cooperates with the lifting component to clamp the skeleton and an ejection component that pushes the skeleton out of the clamping fixture; the second feeding mechanism is equipped with a skeleton clamping component and a clamping and fixing component that cooperates with the skeleton clamping component to fix the skeleton. In the injection molding machine, the first feeding mechanism sends the skeleton to the injection molding machine, so that the injection molding machine can inject the rubber material into the skeleton; The pin insertion part includes a pin guiding and cutting mechanism and a turbine pin pushing mechanism that pushes the pin through the pin guiding and cutting mechanism and inserts it into the skeleton; The turbine pusher mechanism includes a hollowed-out roller seat, a needle insertion plate at the bottom of the roller seat, several equally spaced needles arranged side by side inside the roller seat to push the rollers, a needle guide plate between two adjacent needle pusher rollers, the needle guide plate having guide holes through which the needles pass, and the needle insertion plate having corresponding insertion holes; each needle pusher roller has a meshing transmission gear at one end, and a turbine at the other end of one needle pusher roller, and a transmission worm gear meshing with the turbine and a drive component driving the transmission worm gear to rotate on the roller seat on one side of the turbine; The pin guiding and cutting mechanism includes a guide pin plate located at the upper end of the roller seat and a cutting module fixed to the guide pin plate. The guide pin plate has at least two rows of skeleton slots, each skeleton slot has a pin hole, and multiple first needle holes for the pin to pass through are opened along the circumference of the pin hole in the skeleton slot. When the second feeding mechanism moves the injection-molded skeleton above the guide pin plate, the driving component drives the insert pin to push the roller to roll. The insert pin is pushed upward by the roller and extends a certain distance beyond the first needle hole before stopping to prevent the insert pin from deforming when inserted into the skeleton due to excessive length. The second feeding mechanism then moves the skeleton downward so that the insert pin is inserted into the skeleton. The driving component then drives the insert pin to push the roller to roll again, and the insert pin is pushed upward by the roller and moves upward until the insert pin is in place before stopping. At the same time, the second feeding mechanism moves the skeleton downward again to the skeleton slot for positioning, and then the cutting module cuts off the insert pin.

2. The automatic plastic-coated insert device for skeletons according to claim 1, characterized in that, The skeleton displacement mechanism includes a longitudinal support with a longitudinal guide rail assembly, a gripping component slidably mounted on the longitudinal guide rail assembly, and a lead screw and motor drive mechanism for driving the gripping component to reciprocate along the longitudinal guide rail assembly. The gripping component includes a movable base, which has a telescopic cylinder with its output end passing through it. A mounting plate is fixed to the output end of the telescopic cylinder. The bottom of the mounting plate has gripping members equal in number to those fed at one time by the skeleton storage and feeding device. Each gripping member is inclined in the same direction at the bottom of the mounting plate. The movable base on both sides of the telescopic cylinder is slidably connected to the mounting plate to ensure the vertical movement of the mounting plate. The first stabilizing guide is stable, and the movable seat on one side of each first stabilizing guide is provided with a first elastic buffer that penetrates the movable seat and can contact the mounting plate; the length of the mounting plate is greater than the length of the movable seat, and the lengths of the two ends of the mounting plate extending out of the movable seat are equal. The extended part of the mounting plate is provided with a second elastic buffer that penetrates the mounting plate. The bottom ends of the mounting plate are also provided with first positioning columns. When the telescopic cylinder drives the mounting plate to descend, the first positioning columns are inserted into the positioning holes of the jig of the skeleton storage and feeding device or the skeleton displacement mechanism. The bottom end of the first positioning column is set as a circular surface.

3. The automatic plastic-coated insert device for skeletons according to claim 2, characterized in that, The gripper includes a slanted plate fixedly embedded in the mounting plate at the top, a pneumatic gripper fixed to the side of the slanted plate, a clamping plate on the two grippers of the pneumatic gripper, and elastic clamping blocks on the opposite end faces of the two clamping plates. The end faces of the elastic clamping blocks are set as arc-shaped surfaces that match the skeleton, and the lower end face of the elastic clamping block on the side away from the elastic clamping block is set as a slanted surface that gradually slopes outward from bottom to top.

4. The automatic plastic-coated insert device for skeletons according to claim 1, characterized in that, The transfer mechanism includes an electric cylinder base, on which an electric cylinder is mounted. Guide rails are provided on both sides of the electric cylinder. The electric cylinder is equipped with an L-shaped fixture slide plate that cooperates with the two guide rails. The fixture is fixed to the end of the L-shaped fixture slide plate. The fixture includes a fixture connecting seat that connects to the L-shaped fixture slide plate. The fixture connecting seat has a slot, in which a skeleton positioning fixture is provided. Guide posts that connect to the lifting assembly are provided around the bottom of the fixture connecting seat.

5. The automatic plastic-coated insert device for skeletons according to claim 4, characterized in that, The lifting assembly includes a fixed plate connected to the end of the guide post, a movable plate slidably connected to the guide post via a linear bearing, and a lead screw electric cylinder fixed to the fixed plate and driving the movable plate to move up and down along the guide post. The fixed plate is provided with guide rods fixedly connected to the skeleton positioning fixture around its perimeter, and the movable plate is slidably engaged with the guide rods. The movable plate is provided with a punch plate, and multiple push rods are arranged on the punch plate to lift the skeleton through the skeleton positioning fixture. The bottom of the punch plate is provided with a punch base plate for fixing the push rods.

6. The automatic plastic-coated insert device for skeletons according to claim 1, characterized in that, The skeleton clamping assembly includes T-shaped slide blocks slidably mounted on both sides of the gantry frame. Two T-shaped slide blocks are fitted with material-retrieving pull plates, and vertical plates are connected to their bottoms. One T-shaped slide block has a pulling cylinder that pushes the material-retrieving pull plate. The vertical plate has a hollowed-out center, and a transverse slide rail extending along its width is located at the bottom of the vertical plate. Clamps that can move close together slide along the transverse slide rail. Telescopic cylinders that drive the clamps to move closer to clamp the skeleton are located on both sides of the vertical plate. A U-shaped groove for accommodating the skeleton is located on one side opposite to the two clamps in the hollowed-out area. A U-shaped platform is located at the lower end of the U-shaped groove. When the injection molding machine ejects the skeleton, the pulling cylinder pushes the material-retrieving pull plate, causing the vertical plate to move downwards, placing the skeleton within the hollowed-out area. The two telescopic cylinders drive the clamps to move closer together. The U-shaped groove passes through the ejector pin of the injection molding machine, placing the skeleton within the U-shaped groove. The U-shaped platform is located at the lower end of the skeleton. When the pulling cylinder pulls the material-retrieving pull plate upwards, the U-shaped platform pulls the skeleton away from the ejector pin, and the clamping and fixing assembly fixes the skeleton within the U-shaped groove.

7. The automatic plastic-coated insert device for skeletons according to claim 6, characterized in that, The clamping and fixing assembly includes a fixed span plate fixed on two T-shaped slides and a pressing cylinder disposed on the fixed span plate with its output end passing through the fixed span plate; the output end of the pressing cylinder is provided with a frame, the bottom of the frame is provided with a pin plate, the bottom surface of the pin plate is provided with fixed pins corresponding to each U-shaped groove, and the pin plate is provided with second positioning columns on both sides; the pin plate on one side of the second positioning column is provided with a slide rod, and the two ends of the longitudinal plate are provided with guide seats that cooperate with the slide rod, and the slide rod slides through the guide seats; the fixed span plate on both sides of the pressing cylinder is provided with a second stabilizing guide connected to the frame; the fixed pin includes a connecting post fixed to the pin plate, the connecting post is provided with a plug-in post coaxial with the connecting post, the plug-in post is inserted into the frame, and the circumferential end face of the plug-in post is provided with a circular convex edge extending along the axial direction.

8. The automatic plastic-coated insert device for skeletons according to claim 1, characterized in that, The pin guide plate includes an upper pin guide plate and a lower pin guide plate. Two adjacent pin push rollers are located between the upper pin guide plate and the lower pin guide plate. The end faces of the upper pin guide plate and the lower pin guide plate near one end are set as transition slopes, and the transition slopes of the upper pin guide plate and the lower pin guide plate can contact the end faces of the corresponding adjacent pin push rollers.

9. The automatic plastic-coated insert device for skeletons according to claim 1, characterized in that, The back of the guide plate is provided with a movable receiving cavity; the cutting module includes a cutting block slidably disposed in the movable receiving cavity, a die-cutting rod connected to the cutting block through the guide plate, a cutting arm connected to the die-cutting rod, a cutting arm push block pivotally connected to one end of the cutting arm, and a cutting cylinder fixed to the guide plate and whose output end is connected to the cutting arm push block; the cutting arm near the die-cutting rod is provided with a boss, and the side wall of the guide plate is provided with a movable cavity for the boss to move. The boss is pivotally connected to the guide plate through a rotating shaft; the cutting block is provided with a through hole corresponding to the ejector pin hole, and the circumferential edge of the through hole is provided with a second needle hole corresponding to the first needle hole. The cutting arm is driven by the cutting cylinder to drive the die-cutting rod, and the die-cutting rod pushes the cutting block to make the first needle hole and the second needle hole misaligned to cut the insert pin.

10. The automatic plastic-coated insert device for skeletons according to claim 1, characterized in that, The injection molding machine includes a support frame, a movable module, an upper movable mold module, and a lower mold module. The upper movable mold module and the movable module are mounted on the support frame. The movable module is located below the upper movable mold module, and the lower mold module is located on the movable module. The movable module drives the lower mold module to reciprocate along the second feeding mechanism and the upper movable mold module.

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