An automobile part injection molding device

Abstract

The utility model relates to the technical field of automobile parts injection moulding, disclose a kind of automobile parts injection molding device, including device base, injection system and mold clamping system are equipped on device base, hydraulic mechanism is equipped in shell, and hydraulic mechanism output end is provided with hydraulic rod one and hydraulic rod two, hydraulic rod one end portion is equipped with fixed mould plate support, and hydraulic rod two end portion is equipped with moving plate, and moving plate is equipped with ejector mechanism, and fixed mould plate support is equipped with mould plate assembly together, blanking slot is equipped with blanking mechanism that can be discharged to part and output, the utility model has the beneficial effect compared with prior art in that: when opening mould, the gear plate of moving plate bottom is synchronous after moving, is driven by the meshing transmission of transmission gear and bevel gear four, bevel gear three, side plate is moved along guide slide rail steadily, makes conveying belt mechanism one accurate rise to the just below mould cavity, and the height of plastic part falling is greatly shortened.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts injection molding technology, specifically to an automotive parts injection molding device. Background Technology

[0002] The automotive industry is one of the core application areas of plastic injection molding technology. A large number of precision, small-sized parts, such as automotive interior brackets, wiring harness holders, clips, and decorative components, are produced through injection molding. These parts have extremely high requirements for surface smoothness and freedom from damage or deformation. Any surface scratches or edge chips will render the part unusable, failing to meet the stringent standards of automotive assembly. In the entire injection molding production process, the material unloading stage is a crucial node connecting molding and subsequent processes. The synchronicity of its movements and the smoothness of its transport directly determine the product qualification rate and production continuity. However, the material unloading systems of existing plastic injection molding equipment generally suffer from structural design flaws, making them unsuitable for the high-volume, high-efficiency production demands of automotive precision parts.

[0003] In current rapid injection molding production of plastics, the mainstream unloading technologies are mainly divided into three categories: manual unloading, automated unloading by robotic arms, and fixed gravity unloading. Manual unloading is the most basic method, without a dedicated automated unloading mechanism. After the mold is opened, the operator uses tweezers or hands to remove the plastic part from the mold cavity and places it in a turnover box. Automated unloading by robotic arms is achieved by installing a three-axis or six-axis industrial robot next to the injection molding machine. The robot arm is equipped with a pneumatic gripper or vacuum suction cup at its end. It is driven by a preset electronic control program to move the robot arm to the position of the mold cavity, grab the plastic part, and place it on a fixed conveyor belt. Fixed gravity unloading is the most widely used method in rapid injection molding scenarios. A horizontal conveyor belt or receiving hopper is fixedly set directly below the mold. After the mold is opened, the plastic part falls freely into the conveyor belt or hopper by gravity and is then transported to the subsequent work station by the conveyor belt.

[0004] Among the existing unloading technologies mentioned above, manual unloading is extremely inefficient, requiring a significant increase in part removal time during a single-cavity injection molding cycle. It is also labor-intensive, with operators prone to fatigue from repetitive movements, and poses a safety risk of hand injuries from mold clamping. Manual handling can also easily cause scratches on the plastic part surface and deformation of thin-walled parts, greatly reducing product yield. While automated unloading with robotic arms can achieve automation, the purchase and maintenance costs are high, with a single robotic arm costing hundreds of thousands of yuan. Furthermore, mold changes require reprogramming and re-adjusting the robotic arm's gripping path and posture, resulting in time-consuming changes and poor adaptability. For multi-cavity, small-sized parts, the mechanical unloading... Manually grasping each part individually further reduces production efficiency. Furthermore, the synchronization between the robotic arm's movements and the mold-opening action relies on the signal transmission of the electronic control system, which can easily lead to delays causing grasping failures or collisions with the mold. While fixed gravity unloading is simple in structure and low in cost, it has fatal flaws. Because the conveyor belt or hopper is at a fixed height, the plastic parts typically fall from a considerable height, making them prone to collisions, bounces, and edge breakage during free fall. This is especially true for thin-walled clips and precision brackets used in automobiles, where the rate of deformation from collisions is greatly increased. Moreover, the plastic parts fall without guidance and easily scatter outside the conveyor belt, requiring frequent manual cleanup and disrupting the production rhythm. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the above-mentioned difficulties and provide an injection molding device for automotive parts.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0007] An injection molding device for automotive parts includes a device base, an injection system and a mold clamping system on the device base, the mold clamping system including a mold clamping drive mechanism, the mold clamping drive mechanism including a housing, a hydraulic mechanism inside the housing, and a hydraulic rod one and a hydraulic rod two at the output end of the hydraulic mechanism, a fixed template support at the end of the hydraulic rod one, a movable plate at the end of the hydraulic rod two, an ejection mechanism on the movable plate, and a template assembly for producing parts on the ejection mechanism and the fixed template support, and a material discharge channel connecting the upper end face and the side end face of the device base, and a material discharge mechanism for discharging and outputting parts in the material discharge channel;

[0008] The feeding mechanism includes a first conveyor belt mechanism that moves up and down in the feeding trough and a second conveyor belt mechanism that is fixedly installed. The second conveyor belt mechanism is equipped with a third conveyor belt mechanism that is inserted into the gap of the first conveyor belt mechanism. The feeding trough is equipped with a transmission mechanism that drives the first conveyor belt mechanism to move up and down.

[0009] As an improvement, the template assembly includes a fixed template body that is bolted to a fixed template support and a movable template body that is connected to the fixed template body. The fixed template body is provided with a feed hole that is connected to the output port of the material cylinder.

[0010] As an improvement, the ejection mechanism includes a connecting plate that is bolted to the movable plate. The connecting plate is provided with a tie rod that passes through the fixed template body, the movable template body and the fixed template support. The tie rod is fixed to the movable template body through a limiting block. One side of the connecting plate abuts against a limiting plate through which the tie rod slides.

[0011] As an improvement, the moving template body is provided with a side groove, and a number of ejector rods are provided on one end face of the limiting plate, which are inserted into the moving template body and whose ends are located in the side groove. The ejector rods are covered with springs located between the moving template body and the limiting plate. The housing is provided with abutment block one, and the other end face of the limiting plate is provided with abutment block two, which passes through the moving plate and the connecting plate and whose ends abut against abutment block one.

[0012] As an improvement, both conveyor belt mechanism one and conveyor belt mechanism two include several conveyor belt bodies arranged in parallel. Conveyor belt mechanism three is located in the gap between each pair of conveyor belt bodies of conveyor belt mechanism two. Conveyor belt mechanism one is driven by a rotating shaft one. Each conveyor belt body of conveyor belt mechanism one is provided with a rotating shaft two. Each of the rotating shaft two is provided with a slot one near one end of conveyor belt mechanism three. The rotating shaft of conveyor belt mechanism three is provided with a plug block that is inserted into the slot one.

[0013] As an improvement, the conveyor belt mechanism is provided with side plates on both sides, and the transmission mechanism includes a lead screw threaded through the side plate. The bottom of the two lead screws is provided with bevel gear 1, and the two bevel gear 1 are driven by a transmission shaft and bevel gear 2. The top of the lead screw is provided with bevel gear 3, and the bottom of the moving plate is provided with a toothed plate. The bottom of the toothed plate is meshed with a transmission gear, and the end of the transmission gear is provided with bevel gear 4 that meshes with bevel gear 3.

[0014] As an improvement, a guide rail is provided on the side wall of the feeding channel, a limiting rail is provided on both sides of the guide rail, a plug-in end is provided at the bottom of the limiting rail, a groove is provided on the side plate to slide and connect with the guide rail, and a slot 2 is provided at the end of the rotating shaft 1 and rotating shaft 2 extending from the side plate to slide and connect with the limiting rail.

[0015] The advantages of this utility model compared with the prior art are as follows:

[0016] 1. When the mold is opened, the toothed plate at the bottom of the moving plate moves backward synchronously. Through the meshing of the transmission gear with bevel gear four and bevel gear three, the screw is driven to rotate, which drives the side plate to move smoothly upward along the guide rail. This allows the conveyor belt mechanism one to be precisely raised to the bottom of the cavity, significantly reducing the drop height of the plastic part. At the same time, the conveyor belt mechanism one, conveyor belt mechanism three and conveyor belt mechanism two form a continuous conveying channel through the insertion of the plug and slot one. The plastic part transitions smoothly without bouncing or scattering, which fundamentally avoids the collision, deformation and surface scratches of precision parts such as car buckles and interior brackets, and significantly improves the product qualification rate.

[0017] 2. As the moving plate of this device moves backward to open the mold, the conveyor belt mechanism automatically rises through the toothed plate drive. The moment the ejector rod ejects the plastic part, the conveyor belt is in place to receive it, with no time difference. When the mold closes, the conveyor belt mechanism automatically descends and resets, without interfering with the mold opening and closing action. No additional electrical control system is required throughout the process. The action is precise and without delay, the single-cycle feeding time is greatly shortened, the production efficiency is greatly improved compared with manual feeding, and the risk of equipment collision caused by the signal delay of the robot is completely eliminated.

[0018] 3. This device achieves fully automated material feeding throughout the entire process, eliminating the need for close-range manual operation and completely eliminating the safety hazard of mold clamping injuries; the graded conveying channel ensures that plastic parts are output in an orderly manner from the side end of the feeding channel, preventing them from scattering outside the equipment and eliminating the need for manual handling, thus ensuring a continuous and stable production rhythm; at the same time, the ejection mechanism achieves synchronous ejection through the rigid collision of abutment block one and abutment block two, and the spring automatically drives the ejection rod to reset, ensuring reliable and smooth operation, further guaranteeing the stability of large-scale continuous production. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an injection molding device for automotive parts according to this utility model. Figure 1 .

[0020] Figure 2 This is a schematic diagram of the overall structure of an injection molding device for automotive parts according to this utility model. Figure 2 .

[0021] Figure 3 This is a schematic diagram showing the overall structure of an injection molding device for automotive parts according to this utility model.

[0022] Figure 4 This is a front view schematic diagram of the overall structure of an injection molding device for automotive parts according to this utility model.

[0023] Figure 5 This is a partial structural diagram of an injection molding device for automotive parts according to this utility model. Figure 1 .

[0024] Figure 6 This is a partial structural diagram of an injection molding device for automotive parts according to this utility model. Figure 2 .

[0025] Figure 7 This is a partial structural disassembly diagram of an injection molding device for automotive parts according to this utility model.

[0026] Figure 8 This is a schematic diagram of the unloading mechanism of an injection molding device for automotive parts according to this utility model.

[0027] Figure 9 This utility model relates to an injection molding device for automotive parts. Figure 3Schematic diagram of the structure at point A in the middle.

[0028] As shown in the figure: 1. Device base; 101. Material discharge channel; 102. Guide slide rail; 103. Limit slide rail; 104. Insertion end; 2. Injection system; 201. Injection unit; 202. Hopper; 3. Mold closing system; 301. Mold closing drive mechanism; 302. Hydraulic rod one; 303. Fixed template support; 304. Hydraulic rod two; 305. Moving plate; 306. Connecting plate; 307. Limiting plate; 308. Ejector rod; 309. Spring; 310. Abutment block one; 311. Abutment block two; 312. Toothed plate; 313. Pull rod 4. Template assembly; 401. Fixed template body; 402. Moving template body; 403. Side groove; 404. Feed hole; 5. Unloading mechanism; 501. Conveyor belt mechanism one; 502. Side plate; 503. Rotating shaft one; 504. Slot one; 505. Slot two; 506. Slide groove; 507. Conveyor belt mechanism two; 508. Conveyor belt mechanism three; 509. Insert block; 510. Lead screw; 511. Bevel gear one; 512. Drive shaft; 513. Bevel gear two; 514. Bevel gear three; 515. Bevel gear four; 516. Drive gear. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings.

[0030] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 9 As shown:

[0031] An injection molding device for automotive parts includes a base 1, an injection system 2 and a mold clamping system 3 on the base 1, and a mold clamping drive mechanism 301. The mold clamping drive mechanism 301 includes a housing, a hydraulic mechanism inside the housing, and a hydraulic rod 302 and a hydraulic rod 304 at the output end of the hydraulic mechanism. A fixed template support 303 is provided at the end of the hydraulic rod 302, and a movable plate 305 is provided at the end of the hydraulic rod 304. An ejection mechanism is provided on the movable plate 305. The ejection mechanism and the fixed template support 303 are jointly provided with a template assembly 4 for producing parts. A material discharge channel 101 is provided between the upper end face and the side end face of the base 1, and a material discharge mechanism 5 is provided in the material discharge channel 101 for discharging and outputting parts.

[0032] The working principle of this utility model is as follows: This automotive parts injection molding device uses the device base 1 as the overall rigid bearing and guiding reference. The mold clamping system 3 achieves high-pressure closure and smooth mold opening of the fixed mold plate and the moving mold plate through the coordinated drive of hydraulic rod 302 and hydraulic rod 304, providing the clamping force required for the molding of precision automotive parts. The device base 1 is horizontally fixed to the concrete foundation of the injection molding workshop by anchor bolts. Its heavy cast iron structure can withstand the mold clamping reaction force and injection high pressure impact within one ton, providing an absolutely stable installation reference for the mold clamping system 3, the injection system 2 and the unloading mechanism 5.

[0033] After the injection system 2 uniformly plasticizes the modified plastic, it is injected into the closed cavity of the template assembly 4 under high pressure and high speed to complete the shaping and size forming of the part. During the mold opening process, the mold closing system 3 drives the template assembly 4 to separate and simultaneously and smoothly eject the plastic part. At the same time, the moving plate 305 drives the unloading mechanism 5 to automatically adjust the lifting height and form a graded conveying channel through multiple sets of bevel gears, so as to realize the orderly output of the plastic part from the side unloading channel 101 without scratches. The entire process adopts pure mechanical linkage to realize the synchronous matching of ejection and unloading actions, without the need for additional electrical control system and power source. It completely solves the pain points of unloading height mismatch and plastic part collision and deformation in traditional injection molding devices. It is suitable for the mass continuous production of small-sized high-precision parts such as automotive clips, interior brackets, and wire harness fixing seats, which greatly improves the product qualification rate and production automation level.

[0034] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 8 As shown:

[0035] The template assembly 4 includes a fixed template body 401 fixed to the fixed template support 303 by bolts and a movable template body 402 connected to the fixed template body 401. The injection system 2 includes a horizontally placed injection unit 201. The injection unit 201 is provided with a hopper 202. The injection unit 201 includes a horizontally placed barrel that can melt plastic granules and inject them into the template assembly 4. A screw is provided inside the barrel and a heating coil is provided outside the barrel. The fixed template body 401 is provided with a feed hole 404 that is connected to the output port of the barrel.

[0036] After drying, automotive-grade modified plastic granules enter the horizontal barrel of the injection unit 201 from the hopper 202. Five heating coils heat the barrel segmentally to the corresponding plastic's melting temperature range. Simultaneously, the plasticizing screw rotates at a set speed. Through the combined action of the screw's shear heat and the heating coils' conductive heat, the plastic granules are uniformly melted and plasticized. The screw slowly retracts while rotating, completing precise metering of the molten material. After the mold clamping system 3 completes high-pressure mold locking, the injection cylinder drives the screw to advance axially at high speed, injecting the molten plastic at the front end of the barrel into the closed cavity of the mold plate assembly 4 through the anti-drool nozzle. During the pressure holding stage, the screw maintains constant pressure to replenish the molten material required for the cooling and shrinkage of the plastic part, preventing shrinkage marks, depressions, and insufficient glue. After the pressure holding stage ends, the nozzle retracts, and the screw rotates again to plasticize, preparing for the next injection cycle.

[0037] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 Appendix Figure 6 Appendix Figure 7 As shown:

[0038] The ejection mechanism includes a connecting plate 306 bolted to a movable plate 305. The connecting plate 306 is provided with a pull rod 313 that passes through the fixed template body 401, the movable template body 402, and the fixed template support 303. The pull rod 313 is fixed to the movable template body 402 through a limiting block. One side of the connecting plate 306 abuts against a limiting plate 307 through which the pull rod 313 slides. The movable template body 402 is provided with a side groove 403. One end face of the limiting plate 307 is provided with several ejection rods 308 that are inserted into the movable template body 402 and whose ends are located in the side groove 403. The ejection rods 308 are covered with springs 309 located between the movable template body 402 and the limiting plate 307. The housing is provided with an abutment block 310. The other end face of the limiting plate 307 is provided with an abutment block 311 that passes through the movable plate 305 and the connecting plate 306 and whose end abuts against the abutment block 310.

[0039] The fixed mold plate body 401 and the moving mold plate body 402 are respectively equipped with customized fixed mold cores and moving mold cores. After the mold is closed, the fixed mold cores and moving mold cores close to form a closed cavity that is completely consistent with the shape of the automobile part. Molten plastic is injected into the cavity at high speed through the feed hole 404. Under the action of injection pressure and holding pressure, it fills all corners of the cavity and replicates the surface texture and dimensional accuracy of the mold core. The cooling system inside the mold is circulated with cooling water to quickly cool and solidify the molten plastic in the cavity.

[0040] After the mold opens, the moving platen moves backward with the moving plate 305, the cavity opens, and the ejector rod 308 extends into the side groove 403, smoothly ejecting the plastic part from the moving mold core, completing one molding cycle; the side groove 403 can accommodate the end of the ejector rod 308, preventing the ejector rod 308 from protruding from the mold surface and interfering with mold closing, while providing guidance for the ejector rod 308 to ensure the straightness of the ejection action.

[0041] When the mold is closed, the mold closing drive mechanism 301 drives the hydraulic rod 302 to extend forward, pushing the fixed template support 303 to stay fixed with the fixed template body 401. At the same time, the hydraulic rod 304 extends forward, pushing the moving plate 305 to move forward. The moving plate 305 drives the moving template body 402 to move closer to the fixed template body 401 through the connecting plate 306 and the tie rod 313. The four tie rods 313 ensure that the moving template body 402 and the fixed template body 401 always remain parallel.

[0042] When the moving mold plate body 402 and the fixed mold plate body 401 are fully fitted, the hydraulic system quickly pressurizes to the set clamping force to ensure that the molded surfaces fit tightly without overflow gaps. When the mold is opened, the hydraulic rod 304 retracts, pulling the moving plate 305 backward. Through the pull rod 313, the moving mold plate body 402 is separated from the fixed mold plate body 401. When the moving plate 305 retreats to the set position, the abutting block 311 on the limiting plate 307 rigidly collides with the abutting block 310 on the shell. The abutting block 310 pushes the abutting block 311 to abut and make the limiting plate 307 stop. The moving plate 305 drives the moving mold plate body 402 to continue moving against the elastic force of the spring 309, driving multiple ejector rods 308 to extend synchronously and smoothly eject the molded plastic part from the moving mold cavity.

[0043] When the moving plate 305 closes the mold again, the second abutment block 311 separates from the first abutment block 310, and the spring 309 extends to drive the limiting plate 307 and the ejector rod 308 to automatically retract to their initial positions to avoid interfering with the mold closing action; at the same time, the toothed plate 312 at the bottom of the moving plate 305 moves back and forth synchronously with the moving plate 305, and drives the transmission gear 516 of the unloading mechanism 5 to rotate through meshing transmission, so as to achieve precise linkage between the unloading action and the mold opening action.

[0044] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 7 Appendix Figure 8 As shown:

[0045] The feeding mechanism 5 includes a first conveyor belt mechanism 501 that moves up and down in the feeding channel 101 and a second conveyor belt mechanism 507 that is fixedly installed. Both the first conveyor belt mechanism 501 and the second conveyor belt mechanism 507 include several conveyor belt bodies arranged in parallel. The first conveyor belt mechanism 501 is driven by a first rotating shaft 503. Each conveyor belt body on the first conveyor belt mechanism 501 is provided with a second rotating shaft. Between each pair of conveyor belt bodies of the second conveyor belt mechanism 507, there is a third conveyor belt mechanism 508 that is inserted into the gap of the first conveyor belt mechanism 501. Each of the second rotating shafts is provided with a slot 504 near one end of the third conveyor belt mechanism 508. The rotating shaft of the third conveyor belt mechanism 508 is provided with a plug 509 that is inserted into the slot 504. The feeding channel 101 is provided with a transmission mechanism that drives the first conveyor belt mechanism 501 to move up and down.

[0046] Both sides of the conveyor belt mechanism 501 are provided with side plates 502 through which both the first rotating shaft 503 and the second rotating shaft on the outside pass. The transmission mechanism includes lead screws 510 threaded through the side plates 502. The bottom of the two lead screws 510 is provided with bevel gears 511. The two bevel gears 511 are driven by a transmission shaft 512 and bevel gears 513. The top of the lead screw 510 near the mold closing drive mechanism 301 is provided with bevel gears 514. The bottom of the moving plate 305 is provided with a toothed plate 312 inserted into the housing. The bottom of the toothed plate 312 is meshed with a transmission gear 516 provided on the device base 1. The end of the transmission gear 516 is provided with a bevel gear 515 meshing with bevel gears 514.

[0047] The side wall of the material feeding channel 101 is provided with a guide slide rail 102, and the two sides of the guide slide rail 102 are provided with limiting slide rails 103. The bottom of the limiting slide rail 103 is provided with a plug-in end 104. The side plate 502 is provided with a slide groove 506 that is slidably connected to the guide slide rail 102. The first rotating shaft 503 and the second rotating shaft extending from the side plate 502 are both provided with a second slot 505 that is slidably connected to the limiting slide rail 103.

[0048] The vertical section of the feeding channel 101 is directly below the cavity of the template assembly 4, and the horizontal section extends to the side of the device. The ejected plastic part can fall directly into the feeding mechanism 5 in the channel and be output from the side through the horizontal section. At the same time, it is convenient to seamlessly connect with the subsequent visual inspection and packaging production line.

[0049] The guide rail 102 slides in conjunction with the groove 506 on the side plate 502 of the feeding mechanism 5, guiding the conveyor belt mechanism 1 501 to rise and fall smoothly in the vertical direction. The limiting rail 103 is embedded in the slot 2 505 on the side plate 502, restricting the conveyor belt mechanism from moving forward, backward, left, and right during the lifting process.

[0050] In the initial state, the conveyor belt mechanism 3 508 is inserted into the slot 504 of the corresponding height of the conveyor belt mechanism 1 501 through the insert block 509, so that the top surface of the conveyor belt mechanism 3 508 is flush with the top surface of the conveyor belt mechanism 1 501 and can complete the transmission after insertion. At the same time, the other end of the conveyor belt mechanism 3 508 is embedded in the gap of the conveyor belt of the conveyor belt mechanism 2 507, forming a continuous graded conveying channel.

[0051] When the mold is opened, the moving plate 305 moves backward, which drives the bottom toothed plate 312 to move backward synchronously. The toothed plate 312 meshes with the transmission gear 516, which drives the transmission gear 516 to rotate. The transmission gear 516 drives the bevel gear 514 to rotate through the bevel gear 4 515, which in turn drives the lead screw 510 to rotate. The lead screw 510 drives the side plates 502 on both sides to move upward along the guide rail 102 through the threaded transmission. The side plates 502 drive the conveyor belt mechanism 1 501 and the conveyor belt mechanism 3 508 to rise synchronously, so that the top surface of the conveyor belt mechanism 1 501 is exactly below the cavity, shortening the falling height of the plastic part and avoiding the plastic part from being bumped and deformed.

[0052] After ejection, the plastic part falls directly onto conveyor belt mechanism 1 501, then transitions to conveyor belt mechanism 2 507 via conveyor belt mechanism 3 508, and is finally output from the side end of the unloading channel 101 to the subsequent station. When the mold is closed, the moving plate 305 moves forward, the toothed plate 312 drives the transmission gear 516 to rotate in the opposite direction, drives the lead screw 510 to rotate in the opposite direction, and drives conveyor belt mechanism 1 501 to descend and reset, avoiding interference with the opening and closing of the mold. During the lifting and lowering of the side plate 502, the slide 506 slides along the guide slide rail 102, and the slot 2 505 slides along the limit slide rail 103, ensuring that the lifting and lowering of the conveyor belt mechanism is smooth and without shaking.

[0053] In the specific implementation of this automotive parts injection molding device, the device base 1 is first horizontally fixed to the concrete foundation of the injection molding workshop with anchor bolts. The fixed template body 401 is fixed to the fixed template support 303 with bolts, and the movable template body 402 is fixed to the connecting plate 306 with the tie rod 313 to complete the installation of the template assembly 4. At the same time, the insert block 509 of the conveyor belt mechanism three 508 is inserted into the slot one 504 of the conveyor belt mechanism one 501, so that the conveyor belt mechanism three 508 is embedded in the gap of the conveyor belt mechanism two 507 to form a continuous graded conveying channel.

[0054] After the equipment is started, the dried automotive-grade modified plastic granules enter the horizontal barrel of the injection unit 201 from the hopper 202. The heating coil heats the plastic in sections to melt it, and the screw rotates to plasticize and complete the molten material metering. When the mold is closed, the hydraulic rod 302 of the mold closing drive mechanism 301 keeps the fixed mold plate support 303 fixed, and the hydraulic rod 304 extends to push the moving plate 305 forward. Through the pull rod 313, the moving mold plate body 402 is driven to fit tightly with the fixed mold plate body 401. The hydraulic system is pressurized to the set clamping force, and then the injection cylinder drives the screw to advance at high speed, injecting the molten plastic into the closed cavity of the mold plate assembly 4 through the feed hole 404. After the pressure is maintained and the molten material is replenished, the mold cooling system circulates cooling water to make the plastic part quickly solidify and shape.

[0055] When the mold is opened, the hydraulic rod 304 retracts and pulls the moving plate 305 backward, causing the moving mold body 402 to separate from the fixed mold body 401. When the moving plate 305 is back to the set position, the abutting block 311 on the limiting plate 307 collides with the abutting block 310 on the shell. The limiting plate 307 stops, and the moving plate 305 continues to retreat to overcome the elastic force of the spring 309, causing the ejector rod 308 to extend and smoothly eject the plastic part from the cavity of the moving mold body 402.

[0056] Simultaneously, the toothed plate 312 at the bottom of the moving plate 305 moves backward and meshes with the transmission gear 516, causing it to rotate. This rotation is driven by the bevel gears 515 and 514, which in turn drive the lead screw 510 to rotate. The lead screw 510 then moves the side plate 502 upward along the guide rail 102, causing the conveyor belt mechanism 501 to rise below the cavity and catch the ejected plastic part. The plastic part then passes through the conveyor belt mechanism 501 and the third conveyor belt mechanism 508 to the second conveyor belt mechanism 507, and is finally output from the side end of the discharge channel 101 to the subsequent station. When the mold closes, the moving plate 305 moves forward, causing the toothed plate 312 to drive the transmission gear 516 to rotate in the opposite direction. The lead screw 510 reverses, causing the conveyor belt mechanism 501 to descend and reset. The spring 309 extends, causing the ejector rod 308 to retract. All mechanisms return to their initial state, and the above process can be repeated for the next injection molding operation.

[0057] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An injection molding device for automotive parts, comprising a device base (1), wherein an injection system (2) and a mold clamping system (3) are provided on the device base (1), characterized in that: The mold closing system (3) includes a mold closing drive mechanism (301). The mold closing drive mechanism (301) includes a housing. A hydraulic mechanism is provided inside the housing, and a hydraulic rod one (302) and a hydraulic rod two (304) are provided at the output end of the hydraulic mechanism. A fixed template support (303) is provided at the end of the hydraulic rod one (302), and a movable plate (305) is provided at the end of the hydraulic rod two (304). An ejection mechanism is provided on the movable plate (305). The ejection mechanism and the fixed template support (303) are together provided with a template assembly (4) for producing parts. A material feeding channel (101) is provided between the upper end face and the side end face of the device base (1). A material feeding channel (101) is provided in the material feeding channel (101) for feeding and outputting parts. The feeding mechanism (5) includes a first conveyor belt mechanism (501) that moves up and down in the feeding channel (101) and a second conveyor belt mechanism (507) that is fixedly installed. The second conveyor belt mechanism (507) is provided with a third conveyor belt mechanism (508) that is inserted into the gap of the first conveyor belt mechanism (501). The feeding channel (101) is provided with a transmission mechanism that drives the first conveyor belt mechanism (501) to move up and down.

2. The injection molding device for automotive parts according to claim 1, characterized in that: The template assembly (4) includes a fixed template body (401) fixed to the fixed template support (303) by bolts and a movable template body (402) connected to the fixed template body (401). The fixed template body (401) is provided with a feed hole (404) connected to the output port of the material cylinder.

3. The injection molding device for automotive parts according to claim 2, characterized in that: The ejection mechanism includes a connecting plate (306) fixed to the movable plate (305) by bolts. The connecting plate (306) is provided with a tie rod (313) that passes through the fixed template body (401), the movable template body (402) and the fixed template support (303) at the same time. The tie rod (313) is fixed to the movable template body (402) through a limiting block. One side of the connecting plate (306) abuts against a limiting plate (307) through which the tie rod (313) slides.

4. The automotive parts injection molding device according to claim 3, characterized in that: The movable template body (402) is provided with a side groove (403). On one side end face of the limiting plate (307), there are several ejector rods (308) that are inserted into the movable template body (402) and whose ends are located in the side groove (403). The ejector rods (308) are covered with springs (309) located between the movable template body (402) and the limiting plate (307). The housing is provided with abutting block one (310). On the other side end face of the limiting plate (307), there is abutting block two (311) that passes through the moving plate (305) and the connecting plate (306) and whose ends abut against abutting block one (310).

5. The injection molding device for automotive parts according to claim 1, characterized in that: Both conveyor belt mechanism one (501) and conveyor belt mechanism two (507) include several conveyor belt bodies arranged in parallel. Conveyor belt mechanism three (508) is located in the gap between each pair of conveyor belt bodies of conveyor belt mechanism two (507). Conveyor belt mechanism one (501) is driven by shaft one (503). Each conveyor belt body on conveyor belt mechanism one (501) is provided with shaft two. Each shaft two is provided with slot one (504) near one end of conveyor belt mechanism three (508). The shaft of conveyor belt mechanism three (508) is provided with a plug (509) that is inserted into slot one (504).

6. The injection molding apparatus for automotive parts according to claim 5, characterized in that: The conveyor belt mechanism (501) has side plates (502) on both sides. The transmission mechanism includes a lead screw (510) threaded through the side plate (502). The bottom of the two lead screws (510) is provided with a bevel gear (511). The two bevel gears (511) are driven by a transmission shaft (512) and a bevel gear (513). The top of the lead screw (510) is provided with a bevel gear (514). The bottom of the moving plate (305) is provided with a toothed plate (312). The bottom of the toothed plate (312) is meshed with a transmission gear (516). The end of the transmission gear (516) is provided with a bevel gear (515) meshing with the bevel gear (514).

7. The injection molding apparatus for automotive parts according to claim 6, characterized in that: The side wall of the feeding channel (101) is provided with a guide slide rail (102), and the two sides of the guide slide rail (102) are provided with a limiting slide rail (103). The bottom of the limiting slide rail (103) is provided with a plug-in end (104). The side plate (502) is provided with a slide groove (506) that is slidably connected to the guide slide rail (102). The ends of the rotating shaft one (503) and rotating shaft two extending from the side plate (502) are both provided with a slot two (505) that is slidably connected to the limiting slide rail (103).

Images