A multi-cavity synchronous injection molding structure for 3C socket plastic mold

Abstract

This utility model discloses a multi-cavity synchronous injection molding structure for 3C socket plastic molds, specifically relating to the field of injection molding machine technology. It includes an injection molding machine and a diversion liquid supply assembly. The injection molding machine comprises a feeder, a diversion liquid supply assembly, a moving platen, and a pusher frame. The feeder is connected to the diversion liquid supply assembly on its side, and the diversion liquid supply assembly has a moving platen on its side. The moving platen is connected to the pusher frame on its side. The diversion liquid supply assembly uses equally spaced drainage pipes to distribute the injection liquid pressure evenly during delivery, ensuring that each drainage pipe receives the same injection pressure. This reduces edge injection defects caused by insufficient end pressure in traditional multi-cavity injection molding. Simultaneously, the drainage pipes use a combination of first and second connecting pipes of different diameters. Based on fluid mechanics principles, this slows the liquid flow rate and increases the static pressure, reducing the direct impact of the liquid on the platen and ensuring consistent injection quality across all cavities during the injection molding process.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, and more specifically, to a multi-cavity synchronous injection molding structure for a 3C socket plastic mold. Background Technology

[0002] Multi-cavity synchronous injection molding structure is a high-efficiency mold and process combination solution for injection molding, which enables multiple cavities to simultaneously and uniformly complete the molding process such as melt filling, pressure holding, and cooling, and finally produce multiple plastic parts with consistent size and performance in one go;

[0003] As disclosed in CN110549558A, a multi-cavity injection mold with adjustable flow rate in the runner to improve product quality includes a base plate, with pads on both sides of the base plate, a lower mounting plate and a lower template arranged sequentially above the pair of pads, a plurality of lower mold cores in the lower template, an upper template on the upper part of the lower template, spacers arranged side by side on both sides of the upper template, an upper runner plate and a lower runner plate arranged between the spacers, a main runner and a branch runner connected to each upper mold cavity on the lower runner plate; an upper mounting plate on the upper part of the upper runner plate, upper pads arranged side by side on both sides of the upper mounting plate, a top plate mounted on the two upper pads, a plurality of flow adjustment rods that cooperate with the positions of each branch runner are arranged in the top plate through stepped through holes, a ring of positioning bosses is provided at the top of the flow adjustment rods, a plurality of shims are detachably provided on the flow adjustment rods between the positioning bosses and the stepped surface of the stepped through holes, and the flow adjustment rods pass through the upper mold top plate, the upper mounting plate and the upper runner plate in sequence with the bottom end located in the branch runner;

[0004] In existing technologies, multi-cavity molds often suffer from unreasonable conveying end designs due to the flow channel structure being adapted to the structure. Cavities far from the central nozzle are prone to flow imbalance. In particular, with each additional stage of flow distribution in a unified multi-injection channel mold system, the pressure uniformity decreases, leading to problems such as prolonged holding time, uneven internal stress in the product, and uneven cavity pressure.

[0005] Therefore, a multi-cavity synchronous injection molding structure for 3C socket plastic molds is proposed to address the above problems. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, this utility model provides a multi-cavity synchronous injection molding structure for 3C socket plastic molds to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a multi-cavity synchronous injection molding structure for a C-socket plastic mold, comprising an injection molding machine and a diversion liquid supply assembly. The injection molding machine includes a feeder, a diversion liquid supply assembly, a moving template, and a pusher frame. The feeder is connected to the diversion liquid supply assembly on its side, the diversion liquid supply assembly is provided with a moving template on its side, and the moving template is connected to a pusher frame on its side.

[0008] The diversion liquid supply assembly includes a liquid supply pipe, a sleeve, a diversion pipe, and a drainage pipe. The outer diameter surface of the liquid supply pipe is provided with a sleeve, the side of the sleeve is installed with a diversion pipe, and the outer diameter surface of the diversion pipe is equidistantly connected with drainage pipes for zoned injection molding.

[0009] The diversion liquid supply assembly also includes a fixed plate, a support plate, and a fixed template. The support plate is installed on the side of the fixed plate, and the fixed template is fixedly connected to the side of the support plate. The fixed plate, the support plate, and the fixed template are connected in communication.

[0010] The drainage tube includes a first connecting tube and a second connecting tube. One end of the first connecting tube is connected to the second connecting tube. The inlet end of the first connecting tube is connected to the diversion tube, and the outlet end of the second connecting tube is connected to the fixing plate.

[0011] The fixed plate is provided with sliding positioning grooves on all four sides, and mounting holes are arranged equidistantly along the surface of the fixed plate in the sliding positioning grooves. A main liquid supply channel is provided between several groups of mounting holes.

[0012] The fixed template has a partitioned injection hole at its injection end, which is connected to the diversion liquid supply channel. The moving template has a connection channel at its injection end, and the partitioned injection hole is connected to the connection channel.

[0013] The diversion pipe is equipped with a diversion switch, and the diversion switch is surrounded by a conveying channel.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] Compared with existing technologies, this multi-cavity synchronous injection molding structure for 3C socket plastic molds utilizes a diversion liquid supply component that, through equally spaced drainage pipes, ensures that the injection liquid is distributed with equal pressure during delivery, guaranteeing that each drainage pipe receives the same injection pressure. This reduces edge injection defects caused by insufficient end pressure in traditional multi-cavity injection molding. Simultaneously, the drainage pipes employ a combination of first and second connecting pipes with different diameters. Based on fluid mechanics principles, this slows down the liquid flow rate and increases the static pressure, reducing the direct impact of the liquid on the mold plate and ensuring consistent injection quality across all cavities during the injection molding process.

[0016] Compared with existing technologies, this multi-cavity synchronous injection molding structure for 3C socket plastic molds offers advantages in terms of adaptability and cost control. The sleeve protects the liquid supply pipe while maintaining a stable injection liquid temperature. The design of the support plate and fixing plate provides a conveying space for diversion injection, reducing the number of customized processing steps for the fixed template and lowering the cost of repeated processing of the fixed template. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the diversion liquid supply component of this utility model.

[0019] Figure 3 This is a schematic diagram of the fixing plate structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the structure of the present invention, in which the fixing plate and the fixed template are separated.

[0021] Figure 5 This is a schematic diagram of the moving template structure of this utility model.

[0022] Figure 6 This is a side view cross-sectional structural diagram of the diversion liquid supply component of this utility model.

[0023] The attached diagram is labeled as follows: 1. Injection molding machine; 2. Feeder; 3. Diverting liquid supply assembly; 4. Moving mold plate; 5. Push frame; 6. Liquid supply pipe; 7. Sleeve; 8. Diverting pipe; 9. Draining pipe; 10. Fixing plate; 11. Support plate; 12. Fixed mold plate; 13. First connecting pipe; 14. Second connecting pipe; 15. Sliding positioning groove; 16. Diverting liquid supply channel; 17. Mounting hole; 18. Main liquid supply channel; 19. Zoned injection hole; 20. Connecting channel; 21. Draining switch. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example

[0026] As attached Figures 1 to 6The diagram illustrates a multi-cavity synchronous injection molding structure for a 3C socket plastic mold, comprising an injection molding machine 1 and a diversion liquid supply assembly 3. The injection molding machine 1 includes a feeder 2, the diversion liquid supply assembly 3, a moving platen 4, and a pusher frame 5. The feeder 2 has the diversion liquid supply assembly 3 connected to its side, and the moving platen 4 is located on the side of the diversion liquid supply assembly 3. The pusher frame 5 is connected to the side of the moving platen 4. This application achieves synchronous injection in different zones through diversion liquid delivery, enabling production of large batches of injection molding and reducing defects caused by insufficient pressure at the injection end. Specifically, the feeder 2 melts and injects the granules... The liquid is fed into the diversion liquid supply assembly 3, and through the diversion switch 21 in its diversion pipe 8, the main liquid supply channel 18 is blocked, and the corresponding diversion pipe 9 channel is opened. Through extrusion, the liquid is sequentially delivered into the diversion pipe 9. Because the diversion pipes 9 are equidistantly arranged, the injection pressure is evenly distributed into the diversion pipes 9 before the liquid delivery is completed. Therefore, the liquid injected into each diversion pipe 9 can obtain the same injection pressure, so that the liquid is poured into the divided mold in equal proportion during the injection process, thereby avoiding the problem of unsuccessful edge injection.

[0027] The diversion liquid supply assembly 3 includes a liquid supply pipe 6, a sleeve 7, a diversion pipe 8, and a drain pipe 9. The outer diameter surface of the liquid supply pipe 6 is provided with a sleeve 7, and the diversion pipe 8 is installed on the side of the sleeve 7. The outer diameter surface of the diversion pipe 8 is equidistantly connected with drain pipes 9 for zoned injection molding. The diversion liquid supply assembly 3 also includes a fixing plate 10, a support plate 11, and a fixed template 12. The support plate 11 is installed on the side of the fixing plate 10, and the fixed template 12 is fixedly connected to the side of the support plate 11. The fixing plate 10, the support plate 11, and the fixed template 12 are interconnected. The sleeve 7 protects the liquid supply pipe 6 while maintaining the injection liquid. The support plate 11 and the fixing plate 10 connected to the drain pipe 9 not only fix the fixed template 12 but also reserve space for diversion injection molding through the support plate 11 and the fixing plate 10, thereby reducing the number of customized processing of the fixed template 12 and avoiding the need for multiple processing of the fixed template 12.

[0028] The drainage pipe 9 includes a first connecting pipe 13 and a second connecting pipe 14. One end of the first connecting pipe 13 is connected to the second connecting pipe 14. The inlet end of the first connecting pipe 13 is connected to the diversion pipe 8, and the outlet end of the second connecting pipe 14 is connected to the fixed plate 10. The drainage pipe 9 is connected by the first connecting pipe 13 and the second connecting pipe 14. The diameters of the first connecting pipe 13 and the second connecting pipe 14 are different. According to Bernoulli's equation and the continuity equation, the total mechanical energy of the fluid and the volumetric flow rate are constant in the same horizontal pipe. Therefore, when the liquid is transported from the first connecting pipe 13 to the second connecting pipe 14, its liquid velocity slows down and the static pressure increases. Therefore, this setting can reduce the direct impact of the liquid on the template through the pipe during the pouring process.

[0029] The fixed plate 10 is provided with sliding positioning grooves 15 on all four sides. The sliding positioning grooves 15 are provided with mounting holes 17 at equal intervals along the surface of the fixed plate 10. A main liquid supply channel 18 is provided between several sets of mounting holes 17. The injection end of the fixed template 12 is provided with partitioned liquid injection holes 19. The partitioned liquid injection holes 19 are connected to the diversion liquid supply channel 16. The injection end of the moving template 4 is provided with a connecting channel 20. The partitioned liquid injection holes 19 are connected to the connecting channel. The fixed plate 10 is used to connect with the fixed template 12 through the mounting holes 17. While the drainage pipe 9 is transporting liquid, the liquid enters the interior of the partitioned liquid injection holes 19. During the transportation process, the liquid enters the connecting channel 20 on the moving template 4 and is subjected to partitioned synchronous injection.

[0030] A diversion switch 21 is installed inside the diversion pipe 8, and a conveying channel is provided around the diversion switch 21. The diversion switch 21 is specifically designed to move a closed ring by a hydraulic rod. The hydraulic rod is arranged to spread out along the center of the closed ring. When the hydraulic rod moves the closed ring, if the closed ring blocks the channel of the diversion pipe 9, the center of the closed ring separates from the sealing column, and the conveying port of the main liquid supply channel 18 opens. Then the liquid can be conveyed through the main liquid supply channel 18. When the closed ring resets, the channel of the main liquid supply channel 18 closes, and the conveying end of the channel of the diversion pipe 9 opens. The liquid is then conveyed through the channel of the diversion pipe 9, realizing the two different conveying methods.

[0031] In this embodiment, the injection molding machine 1, the feeder 2, and the current-draining switch 21 are all commercially available devices known to those skilled in the art. They can be customized or selected according to actual needs. Here, we are only using them without making any structural or functional improvements, and we will not go into detail about them here.

[0032] The working process of this utility model is as follows: The injection molding machine 1 achieves pressure balance through structural design, which can reduce impact and lower mold processing costs; the feeder 2 melts the granular raw material and then transports the molten liquid to the diversion liquid supply assembly 3; in the diversion liquid supply assembly, the diversion switch 21 in the diversion pipe 8 closes the main liquid supply channel 18 and opens the equally spaced diversion pipes 9. Because the diversion pipes 9 are equally spaced, the liquid pressure is evenly distributed during the extrusion and transportation process, ensuring that each diversion pipe 9 receives the same injection pressure, so that the liquid is injected equally into each divided mold area, avoiding injection failure due to insufficient pressure at the edges;

[0033] The sleeve 7 outside the liquid supply pipe 6 serves both a protective function and maintains the temperature of the molten liquid, ensuring injection molding stability. The support plate 11 and the fixing plate 10 connected by the drainage pipe 9, while fixing the fixed mold plate 12, reserve delivery space for diversion injection molding, reducing the number of customized processing times for the fixed mold plate 12 and lowering repeated processing costs. In the liquid delivery path, the first connecting pipe 13 and the second connecting pipe 14 have different diameters. According to Bernoulli's equation and the continuity equation, the total mechanical energy of the fluid in the same horizontal pipe is conserved and the volumetric flow rate is constant. When the liquid flows from the first connecting pipe 13 into the second connecting pipe 14, the flow velocity slows down and the static pressure increases, which can reduce the force of the liquid directly impacting the mold plate. The fixing plate 10 is connected to the fixed mold plate 12 through the mounting hole 17. The liquid delivered by the drainage pipe 9 first enters the partition injection hole 19, and then flows into the connecting channel 20 of the moving mold plate 4, ultimately achieving partitioned synchronous injection molding. The entire process ensures stable and efficient injection molding and avoids edge injection defects by diverting and balancing pressure and optimizing the structure to reduce impact and processing volume.

Claims

1. A multi-cavity synchronous injection structure of a 3C socket plastic mold, comprising an injection molding machine (1) and a shunt liquid supply assembly (3), characterized in that: The injection molding machine (1) includes a feeder (2), a diversion liquid supply assembly (3), a moving template (4), and a pusher frame (5). The feeder (2) is connected to the diversion liquid supply assembly (3) on its side. The diversion liquid supply assembly (3) is provided with the moving template (4) on its side. The moving template (4) is connected to the pusher frame (5) on its side.

2. The multi-cavity synchronous injection structure of a plastic mold for a 3C socket according to claim 1, wherein: The diversion liquid supply assembly (3) includes a liquid supply pipe (6), a sleeve (7), a diversion pipe (8) and a drainage pipe (9). The outer diameter surface of the liquid supply pipe (6) is provided with a sleeve (7), and the side of the sleeve (7) is equipped with a diversion pipe (8). The outer diameter surface of the diversion pipe (8) is equidistantly connected with drainage pipes (9) for zoned injection molding.

3. The multi-cavity synchronous injection molding structure of a 3C socket plastic mold according to claim 1, characterized in that: The diversion liquid supply assembly (3) also includes a fixed plate (10), a support plate (11) and a fixed template (12). The support plate (11) is installed on the side of the fixed plate (10), and the fixed template (12) is fixedly connected to the side of the support plate (11). The fixed plate (10), the support plate (11) and the fixed template (12) are connected in communication.

4. The multi-cavity synchronous injection molding structure of a 3C socket plastic mold according to claim 2, characterized in that: The drainage tube (9) includes a first connecting tube (13) and a second connecting tube (14). One end of the first connecting tube (13) is connected to the second connecting tube (14). The inlet end of the first connecting tube (13) is connected to the diversion tube (8), and the outlet end of the second connecting tube (14) is connected to the fixing plate (10).

5. The multi-cavity synchronous injection molding structure of a 3C socket plastic mold according to claim 3, characterized in that: The fixed plate (10) is provided with sliding positioning grooves (15) on all four sides. The sliding positioning grooves (15) are provided with mounting holes (17) arranged at equal intervals along the surface of the fixed plate (10). A total liquid supply channel (18) is provided between several sets of mounting holes (17).

6. The multi-cavity synchronous injection molding structure of a 3C socket plastic mold according to claim 3, characterized in that: The fixed template (12) has a partitioned injection hole (19) at its injection end, which is connected to the diversion liquid supply channel (16). The moving template (4) has a connecting channel (20) at its injection end, which is connected to the partitioned injection hole (19).

7. The multi-cavity synchronous injection molding structure of a 3C socket plastic mold according to claim 2, characterized in that: The diversion pipe (8) is equipped with a diversion switch (21), and the diversion switch (21) is surrounded by a conveying channel.

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