A notebook computer shell injection molding device

Abstract

The application discloses a notebook computer shell injection molding equipment and relates to the field of injection molding equipment, which comprises a mounting frame, an electric hydraulic rod one is mounted in the mounting frame, a moving mold is fixedly connected to the output shaft of the electric hydraulic rod one, a fixed mold is arranged on the right side of the moving mold, a discharge pipe is arranged on the right side of the fixed mold, a cooling pipe is arranged in the fixed mold, a shunt groove is symmetrically arranged in the fixed mold, a shunt pipe for discharging cooling gas is fixedly communicated with the right end of the shunt groove, and a driving plate is arranged on the surface of the fixed mold; the application automatically pushes the formed object to fall off, the internal airflow switching mechanism is used, the cooling gas is shunted to the contact surface of the formed object and the fixed mold by the nozzle, directional cooling and air pressure auxiliary separation are realized, the afterheat is accelerated to be eliminated, and the excess material at the injection port of the discharge pipe is accurately removed by controlling the shearing plate.

Description

Technical Field

[0001] This invention relates to the field of injection molding equipment technology, specifically to an injection molding equipment for laptop casings. Background Technology

[0002] As a core tool for modern work and life, laptops require their casings to be lightweight, high-strength, and high-precision, while also being aesthetically pleasing, durable, and economical for mass production. Injection molding technology, due to its efficiency and cost advantages, has become the mainstream process for producing plastic casings. Against this backdrop, the manufacturing industry is trending towards automation and intelligentization to improve production efficiency and product quality. Laptop casings are typically made of engineering plastics; molten material is injected into a mold using injection molding equipment, and then demolded after cooling and solidification.

[0003] In existing injection molding technologies, traditional equipment often relies on mechanical ejectors or manual operation during the demolding process. This can easily lead to the molded part sticking to the mold surface, causing demolding difficulties, product damage or deformation, and affecting production efficiency and yield. The cooling process often relies on a single channel or external system, resulting in uneven gas distribution and difficulty in quickly dissipating residual heat, which prolongs the molding cycle and may cause shell warping or defects due to thermal stress. The handling of residual material at the injection port is inadequate. Existing technologies mostly rely on manual cleaning or simple scraping after machine shutdown, which not only increases labor costs but also easily leads to mold contamination and material waste, affecting the stability of continuous production. The lack of cleaning function often results in the accumulation of sticky material, interfering with the accuracy of subsequent injection molding. Summary of the Invention

[0004] (a) Technical problems to be solved In view of the above-mentioned shortcomings of the prior art, the present invention provides a notebook computer shell injection molding equipment, which can effectively solve the problems of the prior art.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: This invention discloses a notebook computer shell injection molding equipment, including a mounting frame. An electro-hydraulic rod is installed inside the mounting frame. A moving mold is fixedly connected to the output shaft of the electro-hydraulic rod. A fixed mold is located on the right side of the moving mold. A discharge pipe is located on the right side of the fixed mold. A cooling pipe is opened inside the fixed mold. The input end of the cooling pipe is fixedly connected to an injection port for receiving cooling gas. A flow divider is symmetrically opened inside the fixed mold and is connected to the cooling pipe. The right end of the flow divider is fixedly connected to a flow divider for receiving discharged cooling gas. A drive plate is fitted onto the surface of the fixed mold. A moving groove is opened inside the drive plate, and a nozzle is installed inside the moving groove. The drive plate is used to follow the demolding action of the moving mold and push the molded part to detach. The nozzle is triggered when the drive plate moves out of the surface of the fixed mold, switching the airflow discharge channel of the cooling pipe and diverting the cooling gas flowing in the cooling pipe to the contact surface between the molded part and the fixed mold, thereby assisting in the detachment of the molded part and dissipating residual heat. The bottom end of the discharge pipe is provided with an electric hydraulic rod two, and the surface of the discharge pipe is provided with an elimination mechanism. The elimination mechanism includes a shear plate and a connecting frame. There are two connecting frames and two shear plates. The two shear plates are used to cut off the residual material at the injection port of the discharge pipe when the electric hydraulic rod two is activated. The two connecting frames are used to receive the cooling gas discharged from the cooling pipe during the shear plate activation process to spray off the sticky material on the shear plate.

[0006] Furthermore, a guide tube is slidably connected inside the nozzle, and the guide tube is slidably connected to the flow distribution groove. A connection hole is opened at the bottom right end of the guide tube. A torsion spring is sleeved on the surface of the nozzle. One end of the torsion spring is fixedly connected to the surface of the nozzle, and the other end of the torsion spring is fixedly connected to the inner wall of the motion groove.

[0007] Furthermore, traction plates are fitted on both the upper and lower sides of the drive plate, and the front and rear ends of the right side of the traction plate are slidably connected to the surface of the fixed mold. Fixed rods are fixedly connected to both the upper and lower sides of the moving mold, and the fixed rods are slidably connected to the traction plates.

[0008] Furthermore, the left side of the moving mold is symmetrically slidably connected with push rods, and each push rod is fitted with a second torsion spring. One end of the second torsion spring is fixedly connected to the surface of the moving mold, and the other end of the second torsion spring is fixedly connected to the surface of the push rod.

[0009] Furthermore, a receiving pipe is slidably connected to the right end of the discharge pipe, and the bottom end of the discharge pipe is fixedly connected to the output shaft of the electric hydraulic rod two.

[0010] Furthermore, the end of the nozzle furthest from the guide tube is spherical, and the surface of the nozzle is uniformly provided with several air vents.

[0011] Furthermore, the elimination mechanism also includes two hollow gears, which are rotatably connected to the surface of the connecting frame. Both hollow gears are connected to the connecting frame, and one end of each hollow gear is fixedly connected to one end of the shear plate. The left end of the connecting frame is fixedly connected to the right end of the fixed mold.

[0012] Furthermore, one end of each of the diversion pipes is connected to one end of the connecting frame, and the diversion pipes are used to guide the cooling airflow discharged through the diversion groove to the connecting frame.

[0013] Furthermore, toothed plates are fixedly connected to both the upper and lower ends of the discharge pipe, and the toothed plates are respectively meshed with hollow gears.

[0014] (III) Beneficial Effects Compared with the known prior art, the technical solution provided by this invention has the following beneficial effects: By automatically pushing the molded part off during the demolding process, the drive plate follows the demolding action. Through an internal airflow switching mechanism, the nozzles divert cooling gas to the contact surface between the molded part and the fixed mold, achieving directional cooling and air pressure-assisted separation. This not only accelerates the dissipation of residual heat and shortens the molding cycle, but also reduces defects caused by thermal deformation or adhesion of the shell, ensuring smooth demolding. It is suitable for thin-walled and complex structures of laptop shells, thereby reducing scrap rate and enhancing product surface finish and dimensional accuracy. The cooling gas is reused in the demolding and cleaning processes and diverted to key contact surfaces, improving energy utilization efficiency and reducing the load on the external cooling system, thus reducing energy consumption and operating costs. The automated treatment of residual material at the injection port is achieved by setting up an elimination mechanism, which optimizes the production process. At the end of the injection cycle, the discharge pipe is controlled to move out of the fixed mold, and the shear plate is controlled to accurately remove excess material from the injection port of the discharge pipe, preventing it from accumulating and affecting the quality of subsequent injection molding. Furthermore, the connecting frame uses cooling gas output to spray away the sticky material on the shear plate, keeping the mold clean without manual intervention, reducing downtime and maintenance costs, and avoiding the pollution or mold damage that may be introduced by traditional cleaning methods, thus ensuring production continuity and stability. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another angle; Figure 3 This is a front view structural diagram of the present invention; Figure 4 For the present invention Figure 3 A magnified schematic diagram of the local structure at point A; Figure 5 For the present invention Figure 4 A magnified view of the structure at point B in the middle; Figure 6 This is a three-dimensional structural diagram of the elimination mechanism in this invention; Figure 7 This is a three-dimensional structural diagram of the drive board in this invention; Figure 8 This is a three-dimensional structural diagram of the fixed mold, traction plate, and drive plate in this invention; Figure 9 This is a three-dimensional structural diagram of the mounting frame, electro-hydraulic rod, motion mold, and fixing rod in this invention.

[0017] The labels in the diagram represent: 1. Mounting frame; 2. Electro-hydraulic rod one; 3. Fixed mold; 4. Moving mold; 5. Discharge pipe; 6. Receiving pipe; 7. Electro-hydraulic rod two; 8. Cooling pipe; 9. Injection port; 10. Drive plate; 11. Moving groove; 12. Guide pipe; 13. Nozzle; 14. Torsion spring one; 15. Diverting groove; 16. Diverting pipe; 17. Traction plate; 18. Fixed rod; 19. Push rod; 20. Torsion spring two; 21. Connecting frame; 22. Hollow gear; 23. Shear plate; 24. Toothed plate; 25. Connecting hole. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] The present invention will be further described below with reference to embodiments.

[0020] This embodiment describes a notebook computer casing injection molding equipment, such as... Figure 1 - Figure 9 As shown, the device includes an installation frame 1, an electric hydraulic rod 2 is installed inside the installation frame 1, a moving mold 4 is fixedly connected to the output shaft of the electric hydraulic rod 2, a fixed mold 3 is provided on the right side of the moving mold 4, and a discharge pipe 5 is provided on the right side of the fixed mold 3; push rods 19 are symmetrically slidably connected to the left side of the moving mold 4, and torsion springs 20 are sleeved on the surface of each push rod 19. One end of each torsion spring 20 is fixedly connected to the surface of the moving mold 4, and the other end of each torsion spring 20 is fixedly connected to the surface of the push rod 19. The fixed mold 3 has a cooling pipe 8 inside, and the input end of the cooling pipe 8 is fixedly connected to an injection port 9 for receiving the cooling gas. The fixed mold 3 has symmetrically arranged diversion grooves 15 inside, which are connected to the cooling pipe 8. The right end of the diversion groove 15 is fixedly connected to a diversion pipe 16 for receiving the cooling gas. The surface of the fixed mold 3 is fitted with a drive plate 10, and the upper and lower sides of the drive plate 10 are fitted with traction plates 17. The front and rear ends of the right side of the traction plate 17 are slidably connected to the surface of the fixed mold 3. The upper and lower sides of the moving mold 4 are fixedly connected with fixed rods 18, and the fixed rods 18 are slidably connected to the traction plates 17. The drive plate 10 has a motion groove 11 inside, and a nozzle 13 is installed inside the motion groove 11. The drive plate 10 is used to follow the demolding action of the moving mold 4 and push the molded object to fall off. The nozzle 13 is used to trigger when the drive plate 10 moves out of the surface of the fixed mold 3, switch the airflow discharge channel of the cooling pipe 8, and divert the cooling gas flowing in the cooling pipe 8 to the contact surface between the molded object and the fixed mold 3 to assist the molded object to fall off and dissipate residual heat. The end of the nozzle 13 away from the guide pipe 12 is spherical, and several vent holes are evenly arranged on the surface of the nozzle 13. The nozzle 13 has a guide tube 12 slidably connected inside, and the guide tube 12 is slidably connected to the flow divider 15. A connection hole 25 is opened at the bottom right side of the guide tube 12. A torsion spring 14 is sleeved on the surface of the nozzle 13. One end of the torsion spring 14 is fixedly connected to the surface of the nozzle 13, and the other end of the torsion spring 14 is fixedly connected to the inner wall of the motion groove 11.

[0021] In existing technologies, demolding often requires additional power or manual intervention, which can easily lead to adhesion or deformation of the molded product. However, this equipment utilizes the diversion output of cooling gas to direct the gas into the contact surface between the mold and the outer shell at the moment of demolding, forming air pressure-assisted separation and local rapid cooling, which shortens the cooling time and improves the production cycle. In the thin-walled structure of laptop shells, traditional methods often cause warping due to uneven cooling. However, this equipment ensures uniform temperature dissipation through precise airflow control, thereby improving the dimensional stability and surface quality of the product and meeting the stringent requirements of the electronics industry for high-precision shells.

[0022] At other levels, this embodiment provides an elimination mechanism, such as Figure 6 As shown, an electric hydraulic rod 7 is installed at the bottom of the discharge pipe 5, and a receiving pipe 6 is slidably connected to the right end of the discharge pipe 5. The bottom end of the discharge pipe 5 is fixedly connected to the output shaft of the electric hydraulic rod 7. An elimination mechanism is provided on the surface of the discharge pipe 5. The elimination mechanism includes a shear plate 23 and a connecting frame 21. There are two connecting frames 21 and two shear plates 23. The two shear plates 23 are used to cut off the residual material at the injection port of the discharge pipe 5 when the electric hydraulic rod 7 is started. The two connecting frames 21 are used to receive the cooling gas discharged from the cooling pipe 8 during the start of the shear plate 23, so as to spray off the sticky material on the shear plate 23. One end of the diversion pipe 16 is connected to one end of the connecting frame 21. The diversion pipe 16 is used to guide the cooling airflow discharged through the diversion groove 15 to the connecting frame 21. Tooth plates 24 are fixedly connected to both the upper and lower ends of the discharge pipe 5. The tooth plates 24 are respectively meshed with hollow gears 22.

[0023] The elimination mechanism also includes hollow gears 22. There are two hollow gears 22. The two hollow gears 22 are rotatably connected to the surface of the connecting frame 21. Both hollow gears 22 are connected to the connecting frame 21. One end of each hollow gear 22 is fixedly connected to one end of the shear plate 23. The left end of the connecting frame 21 is fixedly connected to the right end of the fixed mold 3.

[0024] Existing methods often require downtime for cleaning, resulting in low production efficiency, and manual operation is prone to contamination or mold wear. This equipment simultaneously activates the shear plate 23 during the injection molding cycle to precisely remove residual material from the injection port, and uses cooling gas diversion to spray away sticky substances in real time, without interrupting the production process. This not only reduces cleaning time to near zero, but also reduces energy consumption through gas reuse. When continuously producing laptop casings, traditional equipment may experience a decrease in injection molding accuracy due to material accumulation, while this equipment's automated cleaning ensures continuous mold cleanliness, improves the consistency and reliability of mass production, and reduces maintenance costs and material waste.

[0025] Working principle: In specific implementation, the present invention provides an external regulated power supply for each electrical component, receives hot melt plastic through the receiving pipe 6, and drives the output shaft of the electric hydraulic rod 7 to move the discharge pipe 5 on the surface of the receiving pipe 6 by activating the electric hydraulic rod 7, so that the discharge pipe 5 is inserted into the fixed mold 3, and hot melt plastic is injected between the fixed mold 3 and the moving mold 4. Cooling gas is injected into the injection port 9, and the cooling gas enters the cooling pipe 8 through the injection port 9. The cooling pipe 8 absorbs heat and waits for the outer shell to be formed. The gas enters the distribution groove 15 through the cooling pipe 8 and then is discharged to the distribution pipe 16. After the outer shell is formed, the user activates the electric hydraulic rod 2, which causes the output shaft of the electric hydraulic rod 2 to drive the moving mold 4 away from the fixed mold 3. During the movement, the ejector rod 19 moves on the surface of the moving mold 4, causing the ejector rod 19 to eject the outer shell that may be stuck to the surface of the moving mold 4. When the ejector rod 19 comes into contact with the mounting frame 1 during the movement, it squeezes the torsion spring 20. When the moving mold 4 moves away from the mounting frame 1, the ejector rod 19 is reset by the rebound force of the torsion spring 20. During the movement of the moving mold 4, it drives the fixed rod 18 to move, the fixed rod 18 drives the traction plate 17 to move, and the traction plate 17 drives the drive plate 10 to move, causing the drive plate 10 to move out of the surface of the fixed mold 3. At this time, as Figure 5 As shown, the torsion spring 14, which is in a compressed state, rebounds and resets, causing the nozzle 13 to move on the surface of the guide tube 12 and pop out of the motion slot 11. In addition, the drive plate 10 drives the guide tube 12 to move in the diversion slot 15, so that the connecting hole 25 is connected to the diversion slot 15, allowing the airflow in the cooling pipe 8 to enter the guide tube 12, and then spray it through the nozzle 13 onto the contact surface between the outer shell and the fixed mold 3, accelerating the detachment of the outer shell and the reduction of the temperature of the fixed mold 3. When the discharge pipe 5 needs maintenance, keep the moving mold 4 and the fixed mold 3 in the closed state, control the electric hydraulic rod 7 to start, so that the discharge pipe 5 moves out of the fixed mold 3. The discharge pipe 5 drives the toothed plate 24 to move, so that the hollow gear 22 rotates, so that the hollow gear 22 drives the shear plate 23 to move. The two shear plates 23 move closer to each other, so that the shear plates 23 scrape and cut off the plastic residue on the surface of the injection port of the discharge pipe 5. During this process, the cooling gas is discharged to the connecting frame 21 through the diversion pipe 16, and then discharged into the hollow gear 22 through the connecting frame 21. Finally, it is sprayed out through the shear plate 23, so that the plastic residue adhering to the surface of the shear plate 23 is removed.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A notebook computer casing injection molding equipment, characterized in that, The system includes a mounting frame (1), inside which an electric hydraulic rod (2) is installed. A moving mold (4) is fixedly connected to the output shaft of the electric hydraulic rod (2). A fixed mold (3) is provided on the right side of the moving mold (4). A discharge pipe (5) is provided on the right side of the fixed mold (3). A cooling pipe (8) is provided inside the fixed mold (3). The input end of the cooling pipe (8) is fixedly connected to an injection port (9) for receiving cooling gas. A diversion groove (15) is symmetrically provided inside the fixed mold (3). The diversion groove (15) is connected to the cooling pipe (8). The right end of the diversion groove (15) is fixed. A diversion pipe (16) for receiving the exhaust of cooling gas is connected. A drive plate (10) is fitted on the surface of the fixed mold (3). A motion groove (11) is opened inside the drive plate (10). A nozzle (13) is provided inside the motion groove (11). The drive plate (10) is used to follow the demolding action of the moving mold (4) and push the molded object to fall off. The nozzle (13) is used to trigger when the drive plate (10) moves out of the surface of the fixed mold (3) to switch the airflow discharge channel of the cooling pipe (8) and divert the cooling gas flowing in the cooling pipe (8) to the contact surface between the molded object and the fixed mold (3) to assist the molded object to fall off and dissipate residual heat. The bottom end of the discharge pipe (5) is provided with an electric hydraulic rod two (7), and the surface of the discharge pipe (5) is provided with an elimination mechanism. The elimination mechanism includes a shear plate (23) and a connecting frame (21). There are two connecting frames (21) and two shear plates (23). The two shear plates (23) are used to cut off the residual material at the injection port of the discharge pipe (5) when the electric hydraulic rod two (7) is started. The two connecting frames (21) are used to receive the cooling gas discharged from the cooling pipe (8) during the start-up process of the shear plate (23) to spray off the sticky material on the shear plate (23).

2. The notebook computer casing injection molding equipment according to claim 1, characterized in that, The nozzle (13) is slidably connected to a guide tube (12), which is slidably connected to a flow divider (15). A connection hole (25) is provided at the bottom right side of the guide tube (12). A torsion spring (14) is sleeved on the surface of the nozzle (13). One end of the torsion spring (14) is fixedly connected to the surface of the nozzle (13), and the other end of the torsion spring (14) is fixedly connected to the inner wall of the motion groove (11).

3. The notebook computer casing injection molding equipment according to claim 1, characterized in that, The drive plate (10) is fitted with traction plates (17) on both the upper and lower sides. The front and rear ends of the right side of the traction plate (17) are slidably connected to the surface of the fixed mold (3). The upper and lower sides of the moving mold (4) are fixedly connected with fixed rods (18), and the fixed rods (18) are slidably connected to the traction plates (17).

4. The notebook computer casing injection molding equipment according to claim 1, characterized in that, The left side of the motion mold (4) is symmetrically slidably connected with a push rod (19). The surface of the push rod (19) is fitted with a torsion spring (20). One end of the torsion spring (20) is fixedly connected to the surface of the motion mold (4), and the other end of the torsion spring (20) is fixedly connected to the surface of the push rod (19).

5. The notebook computer casing injection molding equipment according to claim 1, characterized in that, The right end of the discharge pipe (5) is slidably connected to the receiving pipe (6), and the bottom end of the discharge pipe (5) is fixedly connected to the output shaft of the electric hydraulic rod (7).

6. The notebook computer casing injection molding equipment according to claim 1, characterized in that, The end of the nozzle (13) away from the guide tube (12) is spherical, and the surface of the nozzle (13) is uniformly provided with several air holes.

7. The notebook computer casing injection molding equipment according to claim 1, characterized in that, The elimination mechanism also includes hollow gears (22), and there are two hollow gears (22). The two hollow gears (22) are rotatably connected to the surface of the connecting frame (21). The hollow gears (22) are all connected to the connecting frame (21). One end of each hollow gear (22) is fixedly connected to one end of the shear plate (23). The left end of the connecting frame (21) is fixedly connected to the right end of the fixed mold (3).

8. The notebook computer casing injection molding equipment according to claim 1, characterized in that, One end of each of the diversion pipes (16) is connected to one end of the connecting frame (21). The diversion pipes (16) are used to guide the cooling airflow discharged through the diversion groove (15) to the connecting frame (21).

9. The notebook computer casing injection molding equipment according to claim 1, characterized in that, Both ends of the discharge pipe (5) are fixedly connected with toothed plates (24), and the toothed plates (24) are respectively meshed with hollow gears (22).

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