High-precision injection mold for notebook computer accessories and method thereof

Abstract

The invention relates to the technical field of notebook accessory machining, and discloses a notebook accessory high-precision injection mold and a method thereof.The notebook accessory high-precision injection mold comprises a base and a top seat, a pouring gate is formed in the top of the top seat, a movable mold is fixedly connected to the bottom of the top seat, and a section mold is installed at the bottom of the movable mold; a runner is formed among the inner centers of the top seat, the movable mold and the section mold, a fixed mold is fixedly connected to the top of the base, a cavity is formed in the top of the fixed mold, and an ejection assembly is arranged in the fixed mold; scraping assemblies are arranged on the two sides of the interior of the cavity. And cleaning and recycling assemblies are symmetrically arranged on the two sides of the top of the fixed mold. By means of the exquisite mechanical linkage design, during mold opening, the rack mechanism can be linked to automatically eject accessories out, the scraper can be synchronously driven to remove product burrs, and mold cavity chippings are automatically cleaned and recycled through the blowing and sucking combined device. The whole process is completed at a time, the production efficiency and the product quality are remarkably improved, and manual dependence is reduced.

Description

Technical Field

[0001] This invention relates to the field of notebook computer parts processing technology, specifically to a high-precision injection mold for notebook computer parts and its method. Background Technology

[0002] Currently, the consumer electronics market is placing increasingly stringent demands on laptops. Thinness, high integration, and superior aesthetics have become core design principles. In particular, the structures of laptop components such as the casing and keyboard bezel are becoming increasingly complex, with continuously decreasing wall thickness, placing unprecedented demands on surface finish and dimensional accuracy. These factors pose significant technical challenges to injection molding, the primary production method for laptops, and its core equipment—injection molds.

[0003] Regarding the aforementioned issues, existing high-precision injection molds for laptop accessories typically operate as follows: At the start of the injection cycle, the mold closes, and the injection molding machine injects molten plastic into the cavity. After cooling and solidification, the injection molding machine drives the mold to open. Once the mold is in the predetermined position, the hydraulic or electric ejection system of the injection molding machine activates, pushing the ejector pins inside the mold to eject the molded part. Subsequently, the part is usually removed by a robot or manually and sent to the next process. If burrs are present on the edges of the part, they are manually trimmed by workers using tools, or deburring is performed in batches at a dedicated station. After the mold has been used for a period of time, the operator pauses production and manually cleans the cavity surface using an air gun and wiping tools to remove residual plastic debris or mold release agent residue.

[0004] However, through long-term practice, the inventors discovered that existing technical solutions exhibit some inherent limitations when dealing with the production of high-standard notebook components: First, the mold ejection action relies on the injection molding machine's own control system and is executed independently only after mold opening, rather than being integrated with the mold opening process. This discrete operation mode reduces the compactness of the production cycle, and the removal and transfer of components often require manual intervention or complex external automated units, thus restricting the improvement of overall production efficiency; Second, burrs generated during injection molding are common process defects, and existing technologies generally treat them as an off-mold process. This post-processing approach not only significantly increases additional labor costs and process time, but also makes it difficult to guarantee uniformity in the precision of manual trimming, easily causing secondary scratches or damage to the surface of the components, leading to a decrease in the final yield rate; Finally, if the fine debris generated during the product manufacturing process is not cleaned in time, it will be imprinted on the surface of the product during the next mold closing, forming pits or spots, directly causing product scrap. Relying on periodic manual shutdowns for cleaning not only disrupts the continuity of production and increases a significant amount of non-productive time, but also makes the cleaning effect entirely dependent on the operator's sense of responsibility and skill level, making it difficult to achieve a stable and reliable level of mold cleanliness and posing a hidden danger to the continuous and stable production of high-quality appearance parts. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a high-precision injection mold for laptop accessories and a method thereof, which solves the problem of low efficiency of the ejection mechanism of existing high-precision injection molds for laptop accessories.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-precision injection mold for notebook computer accessories and its method, comprising a base and a top base, wherein telescopic columns are provided at the four opposite corners between the base and the top base, a gate is provided at the top of the top base, a moving mold is fixedly connected to the bottom of the top base, a die is installed at the bottom of the moving mold, a runner is provided between the centers of the top base, the moving mold, and the die, a fixed mold is fixedly connected to the top of the base, guide pillars are provided between the four corners of the moving mold and the fixed mold, a cavity is provided at the top of the fixed mold, the die corresponds to the cavity, two active racks are symmetrically arranged at the bottom of the moving mold, and the interior of the fixed mold is provided with... An ejection assembly is provided, which is used to open and close in conjunction with the mold and automatically eject the molded part when the mold opens; scraping assemblies are provided on both sides of the interior of the cavity, which are used to clean the burrs on the sides of the molded part; cleaning and recycling assemblies are symmetrically provided on both sides of the top of the fixed mold, which are used to clean and collect the debris and burrs generated after the part is molded. The cleaning and recycling assembly includes two piston cylinders, with piston rods slidably connected inside the piston cylinders, and discharge pipes and feed pipes are symmetrically provided on the side walls of the piston cylinders. A branch pipe is installed at the end of the feed pipe away from the piston cylinder, and multiple suction pipes are installed side by side on the side wall of the branch pipe. A collection tank is installed at the end of the discharge pipe away from the piston cylinder.

[0007] Preferably, one of the piston cylinders can blow away the accumulated debris inside the cavity through a blower, and the other piston cylinder can suck away the accumulated debris through multiple suction tubes and send it into the interior of a collection tank.

[0008] Preferably, the discharge pipe and the feed pipe on the sidewalls of the two piston cylinders are in different positions, one piston cylinder is used for blowing air, and the other piston cylinder is used for collecting debris.

[0009] Preferably, the ejection assembly includes two side plates, which are rotatably connected by a connecting rod. A driven gear one is installed on both outer sides of the connecting rod, and a driven gear two is provided in the middle of the connecting rod. A driven rack is slidably connected inside the fixed mold, and a top plate is fixedly connected to the top of the driven rack. Ejector pins are provided at the four corners of the top of the top plate, and the ejector pins are slidably connected inside the cavity.

[0010] Preferably, the active rack is inserted into the interior of the fixed mold, and the active rack meshes with the driven gear one, while the driven gear two meshes with the driven rack.

[0011] Preferably, the fixed mold has an inner groove, the top plate is slidably connected to the inside of the inner groove, and the bottom four corners of the top plate are provided with limit posts, which are slidably connected to the inside of the fixed mold.

[0012] Preferably, the scraping assembly includes a scraper, a telescopic plate is provided directly above the scraper, side sliders are fixedly connected to both sides of the scraper, side sliding grooves are symmetrically opened inside the fixed mold, the side sliders are slidably connected inside the side sliding grooves, a force plate is fixedly connected to the rear side of the scraper, a plurality of ejection springs are provided on the rear side of the force plate, an inclined fixing block is fixedly connected to the top of the side slider, and an adjustment assembly is provided directly above the inclined fixing block.

[0013] Preferably, the adjusting component includes a lower pressure block, which is slidably connected inside the fixed mold, a limit plate is fixedly connected to the middle of the lower pressure block, a tension spring is sleeved on the outer side of the lower pressure block, and an inclined end face is provided at the bottom of the lower pressure block.

[0014] Preferably, the pressing block can move downward to push the inclined fixing block in a direction away from the scraper.

[0015] A high-precision injection molding method for laptop accessories includes the following steps: a. Injection molding steps: Close the mold, so that the moving mold and the fixed mold fit together, and then inject molten material into the closed space formed by the mold and cavity through the gate and runner. After holding pressure and cooling, the material solidifies and forms a notebook accessory in the cavity. b. Mold opening and in-mold scraping steps: Drive the top seat and base to separate to open the mold. During the separation of the moving mold and the fixed mold, link the lower pressure block and the scraping assembly to make the scraper slide and scrape the edge of the molded part still in the cavity to remove any burrs that may be generated. c. Linked ejection step: As the mold opening action continues, the active rack on the moving mold meshes with the ejection component in the fixed mold, driving the driven rack and the top plate to rise, so that the ejector pins eject the notebook parts that have been scraped out from the cavity. d. Automatic cleaning and recycling steps: During the ejection of the laptop parts, a piston cylinder is driven to generate a blowing airflow, which blows and collects the debris and burrs remaining in and around the cavity after the scraping step. At the same time, another piston cylinder generates suction, which sucks in the collected debris and burrs through a suction tube and transfers them to the collection tank, completing the automatic cleaning of the mold.

[0016] This invention provides a high-precision injection mold for laptop accessories and a method thereof. It has the following beneficial effects: 1. In this invention, when the mold is closed and molten material is injected into the cavity, two active racks are inserted into the fixed mold and mesh with two driven gears in the ejection assembly. At this time, the ejector plate and ejector pin slide into the fixed mold under the drive of the driven gear. When the material is formed and the mold moves upward, the active racks are driven by the driven gear to drive the driven gear to transmit force to the driven rack, thereby driving the ejector plate and ejector pin to move upward, achieving the effect of ejecting the formed notebook accessories during the mold parting process, reducing the workload of workers and improving the efficiency of product ejection.

[0017] 2. In this invention, scraper assemblies are provided on both sides of the cavity. When the mold is closed, the lower pressure block is pressed and pushes the inclined fixing block at the top of the side slider, thereby causing the scraper to retract into the fixed mold, so as not to affect the merging of the mold and cavity and the injection molding of the material. After the part is formed and the mold is opened, the lower pressure block moves upward under the action of the tension spring. At this time, the inclined fixing block is no longer under pressure. Under the action of multiple ejection springs, the scraper slides out again, and the synchronous ejection mechanism scrapes off the burrs on the side of the formed part, ensuring the quality and specifications of the formed part.

[0018] 3. In this invention, during the molding and molding process, the piston rods in both piston cylinders are under pressure. Due to their different internal structures, one is pressurized and then sprays air into the cavity through the pipe, while the other is pressurized and then collects the impurities after scraping through the feed pipe. Finally, when the mold is separated, the spring inside one of the piston cylinders automatically resets and sends the sucked-in impurities into the collection tank through the pipe. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the mold structure of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the active rack of the present invention; Figure 5 This is a schematic diagram of the driven rack of the present invention; Figure 6 This is a schematic diagram of the ejector spring of the present invention; Figure 7 This is a schematic diagram of the inclined fixing block of the present invention; Figure 8 This is a schematic diagram of the scraper structure of the present invention; Figure 9 This is a schematic diagram of the method flow of the present invention.

[0020] The components are as follows: 1. Base; 2. Top seat; 3. Telescopic column; 4. Fixed mold; 5. Gate; 6. Moving mold; 7. Collection tank; 8. Mold; 9. Guide column; 10. Cavity; 11. Piston cylinder; 12. Piston rod; 13. Discharge pipe; 14. Feed pipe; 15. Branch pipe; 16. Suction pipe; 17. Driving rack; 18. Side plate; 19. Driven gear one; 20. Connecting rod; 21. Driven gear two; 22. Driven rack; 23. Top plate; 24. Ejector pin; 25. Scraper; 26. Side slider; 27. Side slide groove; 28. Force plate; 29. ​​Ejection spring; 30. Lower pressure block; 31. Limiting plate; 32. Tension spring; 33. Angled end face; 34. Angled fixing block; 35. Telescopic plate. Detailed Implementation

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see the appendix Figure 1 -Appendix Figure 3 This invention provides a high-precision injection mold for laptop accessories. Its overall structure includes a base 1 and a top seat 2 that cooperate with each other. The opening and closing of the base 1 and top seat 2 are supported and guided by telescopic pillars 3 located at four opposite corners. During injection molding, molten material is injected through a gate 5 on the top of the top seat 2 and fills the sealed space formed by the mold 8 at the bottom of the moving mold 6 and the cavity 10 on the top of the fixed mold 4 fixed to the base 1 through internal runners. To ensure precise alignment between the molds, guide pillars 9 are provided at each of the four corners. This invention ingeniously integrates an ejection assembly, a scraping assembly, and a cleaning and recycling assembly that are mechanically linked to the mold opening and closing action, achieving a high degree of automation in molding, deburring, and mold cleaning. Specifically, the ejection assembly automatically ejects the molded part during mold opening by engaging two active racks 17 at the bottom of the moving mold 6 with an internal gear transmission mechanism. The scraping assembly utilizes the pressure changes during mold opening and closing to drive a scraper 25 to simultaneously remove burrs from the sides as the part is ejected. The cleaning and recycling assembly is designed to automatically clean and collect plastic debris and burrs that may be generated during the scraping and injection molding processes. It consists of two functionally differentiated piston cylinders 11 symmetrically positioned on top of the fixed mold 4. Each piston cylinder 11 has a piston rod 12 slidably connected inside, which can be driven by the mold opening and closing action. One of the piston cylinders 11 is designed as an air blowing unit. When the mold is closed, its piston rod 12 is pressurized, forcing the air inside the cylinder through a specific discharge pipe 13 and a blower head to blow a high-pressure airflow into the cavity 10 area. Its main function is to effectively sweep away and force the debris adhering to or scattered on the surface of the cavity 10 after scraping to a predetermined corner of the mold. Another piston cylinder 11 is designed as a dust extraction unit. Its sidewall feed pipe 14 is connected to multiple parallel suction pipes 16 via branch pipes 15. The openings of these suction pipes 16 face the aforementioned debris accumulation area. When the mold opens and the piston rod 12 of this piston cylinder 11 returns to its original position, a negative pressure is generated inside the cylinder, creating a strong suction force. This force precisely sucks in the debris that has been blown and collected through the multiple suction pipes 16. During the next mold closing and pressure stroke, the sucked-in impurities are pressed through its discharge pipe 13 to an external collection tank 7 for centralized storage. These two piston cylinders 11, through their discharge pipes 13 with different structures and connections on their sidewalls, achieve a coordinated blowing and suction operation with the feed pipe 14. This automatically completes a thorough cleaning of the mold cavity 10 in each production cycle, providing a clean mold environment for the next high-quality injection molding.

[0023] Please see the appendix Figure 4 -Appendix Figure 5The ejector assembly is cleverly integrated into the interior of the fixed mold 4, mainly consisting of two side plates 18 serving as support frames and a connecting rod 20 rotatably connected between them. Driven gears 19 are symmetrically mounted on both sides of the connecting rod 20, while a driven gear 21 is located in the middle of the connecting rod 20. During the dynamic opening and closing of the mold, the drive rack 17, fixed to the moving mold 6, will engage or disengage from the interior of the fixed mold 4. When the mold opens, the linear displacement of the drive rack 17 drives the driven gear 19, which meshes with it, to rotate. Since driven gear 19 and driven gear 21 are coaxially fixed on the connecting rod 20, they rotate synchronously. Driven gear 21 then transmits the rotational motion to the driven rack 22, which meshes with it and can slide up and down inside the fixed mold 4, thus converting the rotational motion back into linear motion. The driven rack 22 is securely connected to a top plate 23, and four ejector pins 24 are evenly distributed on the top of the top plate 23. The tips of these ejector pins 24 pass through the fixed mold 4 and slide on the inner bottom surface of the cavity 10. Therefore, as the mold opening action proceeds, the entire transmission chain is triggered, ultimately driving the top plate 23 and ejector pins 24 to move steadily upward, ejecting the solidified notebook component from the cavity 10. To ensure the smoothness and precision of the ejection action, the fixed mold 4 is specially provided with an inner groove that matches the shape of the top plate 23, allowing the top plate 23 to slide smoothly within it. At the same time, there are also four corner-distributed limiting posts at the bottom of the top plate 23. These limiting posts slide in corresponding guide holes within the fixed mold 4, further ensuring the stability and verticality of the ejection process, preventing skewing or jamming, thus perfectly achieving the beneficial effect of automatic ejection during mold parting, greatly simplifying operation and improving production efficiency.

[0024] Please see the appendix Figure 6 -Appendix Figure 8The scraping assembly is fully mechanically linked to the opening and closing of the mold, thus synchronously removing potential burrs from the edges of the molded parts. Specifically, the core actuator of this scraping assembly is the scraper 25, whose blade is precision-machined to match the contour of the part. The scraper 25 is not stationary but is mounted in a pre-drilled side sliding groove 27 inside the fixed mold 4 via side sliders 26 fixedly connected to its two sides, achieving controllable reciprocating sliding. A force plate 28 is connected to the rear side of the scraper 25, and multiple ejection springs 29 are set behind the force plate 28. These springs provide a continuous forward pushing force for the scraper 25. The motion control of this assembly is jointly completed by the inclined fixing block 34 located on the top of the side slider 26 and the adjustment assembly above it. When the mold closes, the moving mold 6 presses down on the adjusting component, causing it to push the inclined fixing block 34. Utilizing the force of the inclined plane, it overcomes the elasticity of the ejector spring 29, forcibly driving the scraper 25 and side slider 26 to retract into the side sliding groove 27, thus completely freeing up the space in the cavity 10 without affecting the injection molding of the material. At this time, the telescopic plate 35 above the scraper 25 also moves accordingly, playing a protective and guiding role. When injection molding is completed and the mold opens, the pressure on the adjusting component is released, and the previously compressed ejector spring 29 immediately releases its energy, pushing the force plate 28, causing the scraper 25 to slide out quickly and smoothly. Its blade scrapes along the edge of the part precisely at the moment the part is ejected from the cavity 10 by the ejection mechanism, achieving precise removal of burrs. The entire process requires no additional power source, has a high degree of automation, and ensures the smoothness and dimensional consistency of the edges of each product.

[0025] Please see the appendix Figure 6 -Appendix Figure 8The adjustment assembly utilizes the mechanical energy of mold opening and closing. The core of this assembly is a lower pressure block 30, which is installed inside the fixed mold 4 and can slide stably up and down along the guide rail. To ensure smooth and accurate movement, a limiting plate 31 is fixedly connected to the middle of the lower pressure block 30. This limiting plate 31 moves within a guide groove, thereby precisely constraining the sliding stroke and posture of the lower pressure block 30. A tension spring 32 is also fitted on the outside of the lower pressure block 30, providing an upward restoring force to the lower pressure block 30 at all times. The key to the functional conversion of the entire adjustment assembly lies in the specially designed inclined end face 33 with a specific angle at the bottom of the lower pressure block 30. When the mold closes, the moving mold 6 presses down on the lower pressure block 30, causing it to move downwards against the elastic force of the tension spring 32. During this downward movement, the inclined end face 33 at its bottom precisely pushes against the inclined fixing block 34 on the scraping assembly. Through this wedge-shaped transmission action, the vertical downward pressure is efficiently converted into a horizontal thrust. This thrust drives the inclined fixing block 34 and the scraper 25 connected to it to move in a direction away from the center of the cavity 10 until the scraper 25 is completely retracted. When the mold is opened after the part is formed, the pressure applied to the lower pressure block 30 is released, and the tension spring 32 immediately retracts, pulling the lower pressure block 30 back to its initial position. Its inclined end face 33 disengages from the inclined fixing block 34, thereby releasing the restriction on the scraper 25. The scraper 25 can then slide out automatically under the push of its own spring, completing the scraping operation on the part.

[0026] Please see Figure 9 The present invention also provides a high-precision injection molding method for notebook computer accessories: First, step a, the injection molding step, is performed: Under the action of the injection molding machine, the entire mold is closed, so that the moving mold 6 fixed on the top seat 2 and the fixed mold 4 fixed on the base 1 are precisely fitted together. At this time, the mold 8 and the cavity 10 together form a sealed space for molding the laptop accessory. Subsequently, through the gate 5 on the top seat 2 and the runner inside the mold, the high-temperature molten plastic material is injected into the sealed space under high pressure. After the set pressure holding and cooling time, the material is fully solidified in the cavity 10, and finally molded into the predetermined laptop accessory.

[0027] Next, step b, namely the mold opening and in-mold scraping step, is executed: After the part has solidified, the drive top seat 2 and the base 1 separate, and the mold opening program is started. At the instant that the moving mold 6 and the fixed mold 4 begin to separate, the lower pressure block 30, which was previously pressed down in the mold closing state, is reset under the action of its tension spring 32 due to the release of pressure, thereby releasing the restriction on the scraping component. This allows the scraper 25 to slide out quickly under the push of its own spring. Its precision blade can perform a precise sliding scraping on the edge of the molded part that is still in the cavity 10 or has just begun to be ejected. This is intended to efficiently remove any tiny burrs that may be generated during the injection molding process and ensure the smoothness of the edge of the part.

[0028] Then, step c, the linked ejection step, is executed: As the mold opening stroke continues, the active rack 17 fixed on the moving mold 6 engages precisely with the gear system of the ejection assembly built into the fixed mold 4. Through the transmission of a whole set of gears, the driven rack 22 and the top plate 23 connected to it are driven to rise steadily, thereby pushing the ejector pin 24 to completely eject the scraped notebook parts from the cavity 10. The entire ejection process is driven by the mold opening action, without the need for additional power, thus realizing mechanical automation.

[0029] Finally, step d, the automatic cleaning and recycling step, is executed: During the ejection of the laptop component by ejector pin 24, the cleaning and recycling components linked to the mold opening action are activated simultaneously. Specifically, one piston cylinder 11 is driven to generate a strong blowing airflow, which effectively blows away and collects the fine burrs and plastic debris remaining on and around the surface of the cavity 10 after the scraping step into a designated area. Almost simultaneously, another piston cylinder 11 is driven to generate a strong negative pressure suction, which precisely sucks in all the debris and burrs that have just been collected through multiple suction tubes 16 at its front end, and finally presses them into the external collection tank 7 for unified processing. Thus, while the component is completely ejected and removed by the robotic arm, the automatic cleaning of the mold cavity 10 is completed, preparing it for the next injection molding cycle.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision injection mold for laptop accessories, comprising a base (1) and a top plate (2), characterized in that, Telescopic columns (3) are provided at the four diagonal points between the base (1) and the top seat (2). A gate (5) is provided at the top of the top seat (2). A moving mold (6) is fixedly connected to the bottom of the top seat (2). A mold (8) is installed at the bottom of the moving mold (6). A flow channel is provided between the internal centers of the top seat (2), the moving mold (6), and the mold (8). A fixed mold (4) is fixedly connected to the top of the base (1). Guide columns (9) are provided between the four corners of the moving mold (6) and the fixed mold (4). A cavity (10) is provided at the top of the fixed mold (4). The mold (8) corresponds to the cavity (10). Two active racks (17) are symmetrically provided at the bottom of the moving mold (6). An ejection assembly is provided inside the fixed mold (4) for linkage with the mold opening and closing. The molded parts are automatically ejected when the mold is opened; the cavity (10) is provided with scraping components on both sides inside, which are used to clean the burrs on the sides of the molded parts; the top of the fixed mold (4) is symmetrically provided with cleaning and recycling components, which are used to clean and collect the debris and burrs generated after the parts are molded. The cleaning and recycling components include two piston cylinders (11), the piston cylinders (11) are slidably connected with piston rods (12), and the side walls of the piston cylinders (11) are symmetrically provided with discharge pipes (13) and feed pipes (14). The feed pipe (14) is equipped with a branch pipe (15) at the end away from the piston cylinder (11), and multiple suction pipes (16) are installed side by side on the side walls of the branch pipes (15). The discharge pipe (13) is equipped with a collection tank (7) at the end away from the piston cylinder (11).

2. The high-precision injection mold for notebook computer accessories according to claim 1, characterized in that, One of the piston cylinders (11) can blow away the accumulated debris inside the cavity (10) through a blower, and the other piston cylinder (11) can suck away the accumulated debris through multiple suction tubes (16) and send it into the interior of the collection tank (7).

3. A high-precision injection mold for notebook computer accessories according to claim 2, characterized in that, The discharge pipe (13) and the feed pipe (14) on the sidewalls of the two piston cylinders (11) are in different positions. One of the piston cylinders (11) is used for blowing air, and the other piston cylinder (11) is used for collecting debris.

4. A high-precision injection mold for notebook computer accessories according to claim 1, characterized in that, The ejection assembly includes two side plates (18) and a connecting rod (20) is rotatably connected between them. A driven gear (19) is installed on both sides of the outer side of the connecting rod (20), and a driven gear (21) is provided in the middle of the connecting rod (20). A driven rack (22) is slidably connected inside the fixed mold (4). A top plate (23) is fixedly connected to the top of the driven rack (22). Ejector pins (24) are provided at the four corners of the top of the top plate (23). The ejector pins (24) are slidably connected inside the cavity (10).

5. A high-precision injection mold for notebook computer accessories according to claim 4, characterized in that, The active rack (17) is inserted into the interior of the fixed mold (4), and the active rack (17) meshes with the driven gear one (19), and the driven gear two (21) meshes with the driven rack (22).

6. A high-precision injection mold for notebook computer accessories according to claim 5, characterized in that, The fixed mold (4) has an inner groove, the top plate (23) is slidably connected to the inside of the inner groove, and the bottom four corners of the top plate (23) are provided with limit posts, which are slidably connected to the inside of the fixed mold (4).

7. A high-precision injection mold for notebook computer accessories according to claim 1, characterized in that, The scraping assembly includes a scraper (25), a telescopic plate (35) is provided directly above the scraper (25), and side sliders (26) are fixedly connected to both sides of the scraper (25). The fixed mold (4) has symmetrically opened side sliding grooves (27) inside. The side sliders (26) are slidably connected inside the side sliding grooves (27). A force plate (28) is fixedly connected to the rear side of the scraper (25). Multiple ejection springs (29) are provided on the rear side of the force plate (28). An inclined fixing block (34) is fixedly connected to the top of the side slider (26). An adjustment assembly is provided directly above the inclined fixing block (34).

8. A high-precision injection mold for notebook computer accessories according to claim 7, characterized in that, The adjustment component includes a lower pressure block (30), which is slidably connected inside the fixed mold (4). A limit plate (31) is fixedly connected to the middle of the lower pressure block (30), a tension spring (32) is sleeved on the outer side of the lower pressure block (30), and a sloping end face (33) is provided at the bottom of the lower pressure block (30).

9. A high-precision injection mold for a notebook computer accessory according to claim 8, characterized in that, The pressing block (30) can move downward to push the inclined fixing block (34) in a direction away from the scraper (25).

10. The high-precision injection molding method for notebook computer accessories according to claim 1, applied to the high-precision injection mold for notebook computer accessories according to any one of claims 1-9, characterized in that, Includes the following steps: a. Injection molding steps: Close the mold, so that the moving mold (6) fits with the fixed mold (4), and then inject molten material into the closed space formed by the mold (8) and the cavity (10) through the gate (5) and the runner. After holding pressure and cooling, the material is solidified in the cavity (10) to form a notebook accessory. b. Mold opening and in-mold scraping steps: drive the top seat (2) to separate from the base (1) to open the mold. During the separation of the moving mold (6) and the fixed mold (4), link the lower pressure block (30) and the scraping assembly to make the scraper (25) slide and scrape the side of the molded part still in the cavity (10) to remove any burrs that may be generated. c. Linkage ejection step: As the mold opening action continues, the active rack (17) on the moving mold (6) meshes with the ejection component in the fixed mold (4), driving the driven rack (22) and the top plate (23) to rise, so that the ejector pin (24) ejects the notebook accessory that has been scraped out from the cavity (10); d. Automatic cleaning and recycling steps: During the process of ejecting the notebook accessories, a piston cylinder (11) is driven to generate a blowing airflow, which blows and collects the debris and burrs remaining in the cavity (10) and surrounding area after the scraping step. At the same time, another piston cylinder (11) generates suction, which sucks in the collected debris and burrs through the suction tube (16) and transfers them to the collection tank (7), thus completing the automatic cleaning of the mold.

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