A nylon ejection device

Abstract

The application relates to the technical field of nylon blank demolding, and relates to a nylon demolding device which comprises a workbench, a first mechanical arm and a second mechanical arm, a moving table and an X-axis transmission mechanism are arranged on the workbench, a mold fixing mechanism is installed on the moving table, a mounting rack is arranged on the workbench, a lifting table and a Z-axis transmission mechanism are arranged on the mounting rack, a three-jaw inner support type clamp is installed at the bottom of the lifting table, a first rotary driving unit is installed at the tail end of the first mechanical arm, a first rotary seat is fixedly connected to the output end of the first rotary driving unit, a mold clamping mechanism, a plug clamping mechanism and a first gas expansion type inner support chuck are arranged on the first rotary seat, a second rotary driving unit is installed at the tail end of the second mechanical arm, a second rotary seat is fixedly connected to the output end of the second rotary driving unit, a polishing mechanism and a second gas expansion type inner support chuck are arranged on the second rotary seat; the application realizes the automation of nylon composite blank demolding, mold cleaning and workpiece clamping and transfer, and reduces product defects caused by manual operation.

Description

Technical Field

[0001] This invention relates to the field of nylon blank demolding technology, and more particularly to a nylon demolding device. Background Technology

[0002] Monolithically cast nylon worm gears are core wear-resistant components in transmission mechanisms. Leveraging the excellent wear resistance, noise reduction, and impact resistance of nylon, they are widely used in various worm gear drives, lifting, and mixing equipment. To balance the overall structural strength and transmission load-bearing capacity of the worm gear, the industry generally adopts a composite casting structure of a metal core and a nylon matrix. Before casting, the metal core is pre-fixed inside the mold cavity, and then liquid nylon monomer is injected into the cavity. After constant-temperature polymerization and curing, the nylon tightly covers the outer edge of the core's teeth, forming a stable mechanical interlocking structure, thus solidifying the metal core and the nylon matrix into an integrated worm gear blank. The metal core, acting as an embedded load-bearing hub, primarily bears the transmission torque during equipment operation, while the outer nylon matrix, after molding, is processed into the worm gear meshing gear ring. During the casting process, the nylon material will naturally cover one side of the iron core. This part of the nylon is a process allowance, which can ensure that the nylon material fully fills the outer edge groove of the iron core, completely eliminating molding defects such as incomplete filling of the groove and gaps. It effectively avoids the problems of the iron core peeling and loosening from the nylon matrix during demolding and subsequent equipment operation. The excess nylon on this side can be removed by subsequent turning and finishing.

[0003] The molding quality of the iron-core nylon composite worm gear preform depends primarily on the cleanliness of the mold cavity and the stability of the demolding process. In existing molding processes, the mold, iron core, and molding plug are first assembled and preheated, then liquid nylon monomer is introduced. After constant-temperature polymerization and natural cooling, the preform is shaped. After molding, the industry commonly uses manual removal of the molding plug, followed by forced separation of the mold and preform through tapping and prying. Manual demolding offers poor controllability; impact-based demolding easily causes the nylon preform to crack and break, and also damages the interlocking structure between the iron core and nylon, significantly increasing the product defect rate. After demolding, solidified residual nylon material easily adheres to the inner wall of the mold cavity. Existing processes rely solely on manual wiping for cavity cleaning, which is cumbersome, inefficient, and results in inconsistent and incomplete cleaning. If the residual nylon material on the inner wall of the mold is not completely removed, the residual material will interfere with the filling process of the cavity during the next casting process. This will cause quality problems such as material shortage, defects, and surface unevenness in the newly formed worm gear blank, which will seriously restrict the product molding accuracy and the yield of mass production.

[0004] In summary, the existing molding process for iron-core nylon composite worm gear blanks relies heavily on manual labor for the entire process of demolding and cleaning. This not only results in low automation and limited production efficiency, but also the uncertainty of manual operation easily leads to multiple quality defects such as blank breakage, incomplete cavity cleaning, and secondary molding defects. It cannot meet the requirements of continuous, high-precision, and high-stability mass production on assembly lines. Therefore, there is an urgent need for an automated molding and demolding equipment for worm gear blanks that can solve the above-mentioned technical defects. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a nylon ejection device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A nylon ejection device includes a worktable, on which a movable stage and an X-axis transmission mechanism for driving the movable stage to move horizontally are provided. A mold fixing mechanism is mounted on the movable stage. A mounting frame is provided on the worktable, on which a lifting stage and a Z-axis transmission mechanism for driving the lifting stage to move vertically are provided. A three-jaw internal support clamp is mounted on the bottom of the lifting stage, and the three-jaw internal support clamp is located above the movement path of the mold fixing mechanism. A first robotic arm and a second robotic arm are respectively provided on both sides of the worktable. A first rotary drive unit is mounted at the end of the first robotic arm. A first rotary seat is fixedly connected to the output end of the first rotary drive unit. A mold clamping mechanism, a plug clamping mechanism, and a first air-expanding internal support chuck are arranged circumferentially around the outer periphery of the first rotary seat. A second rotary drive unit is mounted at the end of the second robotic arm. A second rotary seat is fixedly connected to the output end of the second rotary drive unit. A grinding mechanism and a second air-expanding internal support chuck are arranged circumferentially around the outer periphery of the second rotary seat.

[0007] Preferably, the X-axis transmission mechanism includes an X-axis track mounted on the worktable, an X-axis lead screw and a first lead screw motor for driving the X-axis lead screw to rotate on the worktable, an X-axis slide block threaded onto the X-axis lead screw, the X-axis slide block being slidably connected to the X-axis track, and the movable stage being fixedly mounted on the X-axis slide block.

[0008] Preferably, the mold fixing mechanism includes a first double-rod cylinder mounted on the upper surface of the moving platform. The piston rod ends of both ends of the first double-rod cylinder are fixedly connected to a first connecting plate, and a first arc-shaped clamping plate is fixedly installed on one side of each of the two first connecting plates.

[0009] Preferably, a guide rail is installed on the upper surface of the moving platform, the guide rail is arranged parallel to the piston rod of the first double-rod cylinder, and the first connecting plate is slidably assembled on the guide rail.

[0010] Preferably, the Z-axis transmission mechanism includes a Z-axis track vertically mounted on the mounting frame, a Z-axis lead screw and a second lead screw motor for driving the Z-axis lead screw to rotate on the mounting frame, a Z-axis slide block threaded onto the Z-axis lead screw, the Z-axis slide block being slidably connected to the Z-axis track, and the lifting platform being fixedly mounted on the Z-axis slide block.

[0011] Preferably, the mold clamping mechanism includes a second double-rod cylinder installed on one side of the first rotating seat. The piston rod ends of both ends of the second double-rod cylinder are fixedly connected to a second connecting plate, and a second arc-shaped clamping plate is fixedly installed on the opposite side of the two second connecting plates.

[0012] Preferably, the plug clamping mechanism is a three-jaw external clamping fixture installed on one side of the first rotating seat, and each jaw of the three-jaw external clamping fixture has an arc-shaped clamping surface on its inner side.

[0013] Preferably, the grinding mechanism includes a grinding motor mounted on one side of the second rotating seat, and the output shaft of the grinding motor is fixedly connected to a grinding head.

[0014] Preferably, a slag collection box is provided next to the workbench.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention uses an X-axis transmission mechanism to drive the horizontal displacement of the moving stage, enabling the mold fixing mechanism to automatically rotate between different workstations. A three-jaw internal support clamp is used to grip and pull the mold from the inner hole of the blank, eliminating the need for manual hammering and prying demolding, thus avoiding blank breakage and damage to the interlocking structure between the iron core and nylon. A first robotic arm and a second robotic arm are respectively installed on both sides of the worktable. Each robotic arm is equipped with a rotary drive unit and a rotating seat with multiple sets of tooling arranged circumferentially. Tooling switching is achieved by rotating the rotating seat, eliminating the need for quick-change connectors on the robotic arms and reducing the risk of failure due to wear, air leakage, and positioning deviation of quick-change components. The first rotating seat integrates a mold clamping mechanism, a plug clamping mechanism, and a first air-expanding internal support chuck; the second rotating seat integrates a grinding mechanism and a second air-expanding internal support chuck. Two sets of robotic arms are responsible for mold plug processing, blank picking and cavity grinding, and core feeding, forming a dedicated work chain for iron-core nylon composite worm gear blanks. This chain can independently complete plug disassembly and assembly, mold clamping, grinding and cleaning of residual material on the inner wall of the mold, and metal core picking and feeding, replacing manual mold cleaning and reducing the risk of subsequent blank defects caused by incomplete cavity cleaning. The entire device, relying on a specific workstation layout and a multi-tool rotation switching structure, replaces manual labor in completing multiple processes, reducing labor intensity, improving operational consistency, and adapting to the needs of continuous batch production lines. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the mold structure; Figure 2 This is a sectional view of the mold; Figure 3 This is a schematic diagram of the structure of the present invention; Figure 4 This is a schematic diagram of the structure of the first rotating seat in this invention; Figure 5 This is a schematic diagram of the structure of the second rotating seat in this invention; Figure 6 This is a schematic diagram of the workbench structure in this invention; Figure 7 for Figure 6 Enlarged diagram of point A in the middle.

[0017] In the picture: 1. Workbench; 2. Moving table; 3. Mounting frame; 4. Lifting platform; 5. Three-jaw internal support clamp; 6. First robotic arm; 7. Second robotic arm; 8. First rotary seat; 9. First air-expanding internal support chuck; 10. Second rotary seat; 11. Second air-expanding internal support chuck; 12. X-axis track; 13. First lead screw motor; 14. X-axis slide; 15. First double-rod cylinder; 16. First connecting plate; 17. First arc-shaped clamping plate; 18. Guide rail; 19. Z-axis track; 20. Second lead screw motor; 21. Z-axis slide; 22. Second double-rod cylinder; 23. Second connecting plate; 24. Second arc-shaped clamping plate; 25. Three-jaw external clamp; 26. Grinding motor; 27. Grinding head; 28. Mold shell; 29. ​​Iron core; 30. Plug; 31. Nylon blank. Detailed Implementation

[0018] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0019] like Figures 1-7As shown, this embodiment of the invention provides a nylon ejection device, including a worktable 1, a movable stage 2 and an X-axis transmission mechanism for driving the movable stage 2 to move horizontally on the worktable 1, a mold fixing mechanism installed on the movable stage 2, a mounting frame 3 on the worktable 1, a lifting stage 4 and a Z-axis transmission mechanism for driving the lifting stage 4 to move vertically on the mounting frame 3, a three-jaw internal support clamp 5 installed at the bottom of the lifting stage 4, the three-jaw internal support clamp 5 being located above the moving path of the mold fixing mechanism, a first robotic arm 6 and a second robotic arm 7 respectively arranged on both sides of the worktable 1, a first rotary drive unit installed at the end of the first robotic arm 6, a first rotary seat 8 fixedly connected to the output end of the first rotary drive unit, a mold clamping mechanism, a plug clamping mechanism and a first air-expanding internal support chuck 9 arranged circumferentially around the outer periphery of the first rotary seat 8, a second rotary drive unit installed at the end of the second robotic arm 7, a second rotary seat 10 fixedly connected to the output end of the second rotary drive unit, a grinding mechanism and a second air-expanding internal support chuck 11 arranged circumferentially around the outer periphery of the second rotary seat 10.

[0020] During operation, the first robotic arm drives the first rotary seat 8 to switch to the mold clamping mechanism, placing the mold on the moving table 2. The mold fixing mechanism clamps and positions the mold. Then, the first rotary seat 8 switches to the plug clamping mechanism to disassemble the plug 30. The X-axis transmission mechanism drives the moving table 2 to move the mold to the area below the three-jaw internal support clamp 5. The Z-axis transmission mechanism drives the lifting table 4 to move the three-jaw internal support clamp 5, realizing the separation of the blank from the mold shell 28. The blank remains inside the mold shell 28. Subsequently, the moving table 2 moves away with the mold, and the first rotary seat 8 switches to the first air-expanding internal support chuck 9 to remove the blank from inside the mold. The moving table 2 then moves the mold into the working range of the second robotic arm 7. The second robotic arm 7 drives the second rotating seat 10 to switch to the grinding mechanism to grind and peel off the solidified nylon residue on the inner wall of the mold shell 28. After grinding, the mold fixing mechanism releases the mold shell 28, and the first robotic arm switches to the mold clamping mechanism again to clamp the mold shell 28 and flip it over to empty the debris inside the mold shell 28. The mold shell 28 is then placed back on the moving table 2 and re-clamped. The second rotating seat 10 switches to the second air-expanding internal support chuck 11 to insert a new metal core 29 into the mold shell 28. The first robotic arm then switches to the plug clamping mechanism to reinstall the plug 30 into the mold. Finally, the mold is removed from the moving table 2 by the mold clamping mechanism. This device relies on a multi-axis linkage and multi-tool rotation switching structure to replace traditional manual operations for demolding, mold cleaning, debris dumping, iron core feeding, plug disassembly and assembly, and mold handling. It reduces the adverse risks and labor intensity caused by human factors, improves the consistency of operations and the rationality of production process, and improves the problems of high demolding defect rate and low production efficiency of existing manual operations.

[0021] Specifically, the X-axis transmission mechanism includes an X-axis track 12 mounted on the worktable 1, an X-axis lead screw and a first lead screw motor 13 that drives the X-axis lead screw to rotate on the worktable 1, an X-axis slide 14 threaded onto the X-axis lead screw, the X-axis slide 14 being slidably connected to the X-axis track 12, and a movable stage 2 being fixedly mounted on the X-axis slide 14.

[0022] Specifically, the mold fixing mechanism includes a first double-rod cylinder 15 installed on the upper surface of the moving table 2. The piston rod ends of both ends of the first double-rod cylinder 15 are fixedly connected to a first connecting plate 16, and a first arc-shaped clamping plate 17 is fixedly installed on the opposite side of the two first connecting plates 16.

[0023] Specifically, a guide rail 18 is installed on the upper surface of the moving stage 2. The guide rail 18 is arranged parallel to the piston rod of the first double-rod cylinder 15, and the first connecting plate 16 is slidably mounted on the guide rail 18. When the first double-rod cylinder 15 drives the first connecting plate 16 and the first arc-shaped clamping plate 17 to clamp the mold, the guide rail 18 forms a lateral constraint on the first connecting plate 16, which can share the lateral load, reduce the lateral force borne by the piston rod, reduce the risk of piston rod deformation and seal wear failure, improve the stability and positioning repeatability of mold clamping, and ensure that the mold moves smoothly under the drive of the X-axis transmission mechanism.

[0024] Specifically, the Z-axis transmission mechanism includes a Z-axis track 19 vertically mounted on the mounting frame 3. The mounting frame 3 is equipped with a Z-axis lead screw and a second lead screw motor 20 that drives the Z-axis lead screw to rotate. A Z-axis slide 21 is threaded onto the Z-axis lead screw and is slidably connected to the Z-axis track 19. The lifting platform 4 is fixedly mounted on the Z-axis slide 21.

[0025] Specifically, the mold clamping mechanism includes a second double-rod cylinder 22 installed on one side of the first rotating seat 8. The piston rods at both ends of the second double-rod cylinder 22 are fixedly connected to second connecting plates 23. Second arc-shaped clamping plates 24 are fixedly installed on opposite sides of the two second connecting plates 23. The second double-rod cylinder 22 pushes the two second arc-shaped clamping plates 24 to move towards each other, achieving symmetrical clamping of the outer wall of the mold shell 28.

[0026] Specifically, the plug clamping mechanism is a three-jaw external clamping fixture 25 installed on one side of the first rotating seat 8. Each jaw of the three-jaw external clamping fixture 25 has an arc-shaped clamping surface on its inner side. The arc-shaped clamping surface is designed to conform to the outer circular surface of the plug 30. The jaws of the three-jaw external clamping fixture 25 are evenly arranged circumferentially and open and close synchronously, forming a clamping cavity that fits the outer circle of the plug 30 after closing. Through surface contact clamping, the friction and coaxiality when pulling out the plug 30 are improved, avoiding slippage and damage to the plug 30 or the mold shell 28, and without directly clamping the nylon blank 31.

[0027] Specifically, the grinding mechanism includes a grinding motor 26 mounted on one side of the second rotating seat 10, with a grinding head 27 fixedly connected to the output shaft of the grinding motor 26. The grinding head 27 is detachably connected to the output shaft of the grinding motor 26. The outer side of the grinding head 27 is provided with an abrasive layer, and its shape is adapted to the inner wall shape of the mold housing 28. During grinding, the second robotic arm 7 drives the rotating grinding head 27 into the inner cavity of the mold housing 28, causing the grinding head 27 to rub against the inner wall of the mold housing 28, peeling off the cured nylon residue attached to the inner wall of the mold housing 28. This replaces manual wiping and cleaning of the mold, improves the consistency and thoroughness of mold cleaning, and reduces the risk of defects such as missing material, incompleteness, and surface unevenness in the subsequent molded blank due to incomplete cavity cleaning.

[0028] Specifically, a slag collection box is set up next to workbench 1.

[0029] The process of the technical solution in this application is described below: The output end of the first rotary drive unit at the end of the first robotic arm 6 rotates, causing the first rotary seat 8 fixedly connected to it to rotate synchronously, so that the mold clamping mechanism installed on the first rotary seat 8 rotates to the working position; the piston rods at both ends of the second double-rod cylinder 22 of the mold clamping mechanism extend towards each other, causing the two second connecting plates 23 and the second arc-shaped clamping plate 24 to close towards each other, thus completing the clamping of the outer wall of the mold; the joints of the first robotic arm 6 are displaced, and the clamped mold is placed on the upper surface of the moving table 2.

[0030] The piston rods at both ends of the first double-rod cylinder 15 extend towards each other, driving the two first connecting plates 16 and the first arc-shaped clamping plate 17 to move towards each other; the first connecting plate 16 is slidably assembled with the guide rail 18, and the first connecting plate 16 slides linearly along the guide rail 18; the two first arc-shaped clamping plates 17 close together and abut against the outer wall of the mold, realizing the positioning and clamping of the mold on the moving table 2.

[0031] The first rotary drive unit at the end of the first robotic arm 6 rotates, causing the first rotary seat 8 to rotate synchronously, so that the three-jaw external clamping fixture 25 mounted on the first rotary seat 8 rotates to the working position; the jaws of the three-jaw external clamping fixture 25 perform a closing movement, and the arc-shaped clamping surface on the inner side of the jaws covers and presses against the outer circle of the plug 30, thereby clamping the plug 30; the joint of the first robotic arm 6 generates displacement, pulling the plug 30 out of the mold housing 28.

[0032] The output shaft of the first lead screw motor 13 rotates, causing the X-axis lead screw connected to it to rotate synchronously; the X-axis lead screw causes the X-axis slide block 14 to move horizontally synchronously; the mold clamped by the first arc-shaped clamping plate 17 moves horizontally synchronously with the moving table 2, so that the mold is directly below the three-jaw internal support fixture 5.

[0033] The output shaft of the second lead screw motor 20 rotates, driving the Z-axis lead screw to rotate synchronously. The Z-axis lead screw drives the lifting platform 4 to move downward, and the three-jaw internal support clamp 5 extends into the center hole of the blank inside the mold. The jaws of the three-jaw internal support clamp 5 make a radial opening movement to press against the inner wall of the blank's inner hole. The output shaft of the second lead screw motor 20 rotates in the opposite direction, and the Z-axis slide 21 makes a vertical upward linear displacement along the Z-axis track 19. The lifting platform 4 and the three-jaw internal support clamp 5 move upward synchronously, and the blank and the mold shell 28 make relative displacement to achieve separation. Then the three-jaw internal support clamp 5 releases the blank, so that the blank is still retained inside the cavity of the mold shell 28.

[0034] The first lead screw motor 13 drives the X-axis slide seat to move, bringing the mold closer to the first robotic arm 6.

[0035] The first rotary drive unit at the end of the first robotic arm 6 rotates, causing the first rotary seat 8 to rotate synchronously, so that the first air-expanding inner support chuck 9 installed on the first rotary seat 8 rotates to the working position; each joint of the first robotic arm 6 moves, sending the first air-expanding inner support chuck 9 into the mold cavity; the first air-expanding inner support chuck 9 expands and forms a tight fit with the inner hole of the blank; each joint of the first robotic arm 6 moves in the opposite direction, taking out the iron-core nylon integrated blank from the mold cavity.

[0036] The first lead screw motor 13 drives the X-axis slide to move, so that the mold is within the working range of the second robotic arm 7.

[0037] The output end of the second rotary drive unit at the end of the second robotic arm 7 rotates, causing the second rotary seat 10 fixed thereto to rotate synchronously, so that the grinding mechanism installed on the second rotary seat 10 rotates to the working position; the output shaft of the grinding motor 26 rotates, causing the grinding head 27 fixedly connected to the output shaft to rotate synchronously; each joint of the second robotic arm 7 moves, sending the rotating grinding head 27 into the mold housing 28, and the grinding head 27 rubs against the inner wall of the mold housing 28, peeling off the cured nylon residue attached to the inner wall of the mold housing 28.

[0038] The first lead screw motor 13 drives the X-axis slide seat to move, bringing the mold closer to the first robotic arm 6.

[0039] The piston rods at both ends of the first double-rod cylinder 15 retract in opposite directions, causing the two first connecting plates 16 and the first arc-shaped clamping plate 17 to move in opposite directions; the two first arc-shaped clamping plates 17 separate from each other, releasing the clamping constraint on the outer wall of the mold shell 28.

[0040] The output end of the first rotary drive unit at the end of the first robotic arm 6 rotates, causing the first rotary seat 8 to rotate synchronously, thus rotating the mold clamping mechanism to the working position. The piston rods at both ends of the second double-rod cylinder 22 of the mold clamping mechanism extend in opposite directions, causing the two second connecting plates 23 and the second arc-shaped clamping plate 24 to close in opposite directions and clamp the outer wall of the mold shell 28. The wrist joint of the first robotic arm 6 rotates, causing the clamped mold shell 28 to flip as a whole, with the opening of the mold shell 28 facing downwards. The debris inside the mold shell 28 falls downwards under the action of gravity and falls into the slag collection box set next to the workbench 1.

[0041] The wrist joint of the first robotic arm 6 rotates in the opposite direction, restoring the mold housing 28 to an upright position; the joints of the first robotic arm 6 are displaced, and the mold housing 28 is repositioned on the upper surface of the moving platform 2; the piston rods at both ends of the first double-rod cylinder 15 extend in opposite directions, driving the two first connecting plates 16 and the first arc-shaped clamping plate 17 to move in opposite directions; the two first arc-shaped clamping plates 17 close together and abut against the outer wall of the mold, thus re-clamping and positioning the mold housing 28.

[0042] The first lead screw motor 13 drives the X-axis slide to move, so that the mold is within the working range of the second robotic arm 7.

[0043] The output end of the second rotary drive unit at the end of the second robotic arm 7 rotates, causing the second rotary seat 10 to rotate synchronously, so that the second air-expanding inner support chuck 11 rotates to the working position; the joints of the second robotic arm 7 move, and the second air-expanding inner support chuck 11 completes the gripping and holding of the inner hole of the new iron core 29; the joints of the second robotic arm 7 continue to move, and the gripped new iron core 29 is placed into the mold shell 28.

[0044] The first lead screw motor 13 drives the X-axis slide seat to move, bringing the mold closer to the first robotic arm 6.

[0045] The first rotary drive unit at the end of the first robotic arm 6 rotates, causing the first rotary seat 8 to rotate synchronously, so that the three-jaw external clamp 25 rotates to the working position; the jaws of the three-jaw external clamp 25 close and hug the outer circle of the plug 30; the joints of the first robotic arm 6 are displaced, sending the plug 30 back to the mold housing 28, completing the assembly and reset of the plug 30.

[0046] The piston rods at both ends of the first double-rod cylinder 15 retract in opposite directions, causing the two first connecting plates 16 and the first arc-shaped clamping plate 17 to move in opposite directions; the two first arc-shaped clamping plates 17 separate from each other, releasing the clamping constraint on the outer wall of the mold; the output end of the first rotary drive unit at the end of the first robotic arm 6 rotates, causing the first rotary seat 8 to rotate synchronously, and the mold clamping mechanism rotates to the working position; the piston rods at both ends of the second double-rod cylinder 22 of the mold clamping mechanism extend in opposite directions, and the two second connecting plates 23 and the second arc-shaped clamping plate 24 close in opposite directions to clamp the outer wall of the mold; the joints of the first robotic arm 6 displace, removing the mold as a whole from the moving table 2, completing one work cycle.

[0047] This device addresses the entire process requirements of demolding, cleaning, and feeding of iron-core nylon composite worm gear blanks. It integrates various actuators into a single unit, arranging them spatially and assigning tasks accordingly. This integrates multiple processes—including plug removal, blank separation from the mold shell, blank pickup, grinding of residual material in the mold cavity, debris disposal, new iron core feeding, plug reinstallation, and mold transfer—into a single machine. It avoids the damage to the blank caused by traditional manual demolding methods involving hammering and prying, while also improving the inconsistencies and defects in subsequent molding caused by manual wiping and cleaning. The device utilizes a rotating seat with multiple tooling arrangements around its circumference to facilitate tooling switching, avoiding the potential malfunctions caused by frequent and rapid changes in robotic arms. By replacing manual labor with mechanical structures, it reduces labor intensity, improves the consistency of the entire process, and can be integrated into production lines to meet the requirements of automated mass production of iron-core and nylon composite worm gear blanks.

[0048] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A nylon ejection device, characterized in that, The system includes a worktable (1), on which a movable stage (2) and an X-axis transmission mechanism for driving the movable stage (2) to move horizontally are provided. A mold fixing mechanism is installed on the movable stage (2). A mounting frame (3) is provided on the worktable (1). A lifting stage (4) and a Z-axis transmission mechanism for driving the lifting stage (4) to move vertically are provided on the mounting frame (3). A three-jaw internal support clamp (5) is installed at the bottom of the lifting stage (4). The three-jaw internal support clamp (5) is located above the moving path of the mold fixing mechanism. First robotic arms are respectively provided on both sides of the worktable (1). 6) and the second robotic arm (7), the end of the first robotic arm (6) is equipped with a first rotary drive unit, the output end of the first rotary drive unit is fixedly connected to a first rotary seat (8), the outer periphery of the first rotary seat (8) is circumferentially arranged with a mold clamping mechanism, a plug clamping mechanism and a first air-expanding inner support chuck (9), the end of the second robotic arm (7) is equipped with a second rotary drive unit, the output end of the second rotary drive unit is fixedly connected to a second rotary seat (10), the outer periphery of the second rotary seat (10) is circumferentially arranged with a grinding mechanism and a second air-expanding inner support chuck (11).

2. The nylon ejection device according to claim 1, characterized in that, The X-axis transmission mechanism includes an X-axis track (12) mounted on the worktable (1), an X-axis lead screw and a first lead screw motor (13) for driving the X-axis lead screw to rotate on the worktable (1), an X-axis slide (14) threaded onto the X-axis lead screw, the X-axis slide (14) being slidably connected to the X-axis track (12), and the moving stage (2) being fixedly mounted on the X-axis slide (14).

3. The nylon ejection device according to claim 1, characterized in that, The mold fixing mechanism includes a first double-rod cylinder (15) installed on the upper surface of the moving platform (2). The piston rod ends of the first double-rod cylinder (15) are fixedly connected to a first connecting plate (16). A first arc-shaped clamping plate (17) is fixedly installed on the opposite side of the two first connecting plates (16).

4. The nylon ejection device according to claim 3, characterized in that, The upper surface of the moving platform (2) is equipped with a guide rail (18), which is parallel to the piston rod of the first double-rod cylinder (15), and the first connecting plate (16) is slidably assembled on the guide rail (18).

5. The nylon ejection device according to claim 1, characterized in that, The Z-axis transmission mechanism includes a Z-axis track (19) vertically mounted on the mounting frame (3). The mounting frame (3) is provided with a Z-axis lead screw and a second lead screw motor (20) that drives the Z-axis lead screw to rotate. A Z-axis slide (21) is threaded onto the Z-axis lead screw. The Z-axis slide (21) is slidably connected to the Z-axis track (19). The lifting platform (4) is fixedly mounted on the Z-axis slide (21).

6. The nylon ejection device according to claim 1, characterized in that, The mold clamping mechanism includes a second double-rod cylinder (22) installed on one side of the first rotating seat (8). The piston rod ends of the second double-rod cylinder (22) are fixedly connected to the second connecting plate (23). The two second connecting plates (23) are fixedly installed on opposite sides of each other. A second arc-shaped clamping plate (24) is fixedly installed.

7. The nylon ejection device according to claim 1, characterized in that, The plug clamping mechanism is a three-jaw external clamp (25) installed on one side of the first rotating seat (8), and each jaw of the three-jaw external clamp (25) has an arc-shaped clamping surface on its inner side.

8. The nylon ejection device according to claim 1, characterized in that, The grinding mechanism includes a grinding motor (26) installed on one side of the second rotating seat (10), and the output shaft of the grinding motor (26) is fixedly connected to a grinding head (27).

9. The nylon ejection device according to claim 1, characterized in that, A slag collection box is provided next to the workbench (1).

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