Fixed mold plate structure of injection molding module

By designing multi-stage buffer components and sliding rod structures on the fixed platen of the injection molding machine, the problem of fatigue in traditional fixed platen buffer mechanisms has been solved, achieving a more uniform buffering effect and a longer service life.

CN224170344UActive Publication Date: 2026-04-28KUNSHAN AOGEXIN PRECISION MOLD CO LTD
View PDF 1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
KUNSHAN AOGEXIN PRECISION MOLD CO LTD
Filing Date
2025-05-23
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

The buffer mechanism of the fixed platen of a traditional injection molding machine is prone to elastic fatigue when subjected to frequent pressure over a long period of time, which affects the injection molding effect and the service life of the mold.

Method used

Design a buffer assembly comprising outer, middle and inner buffer sheets, combined with a sliding rod and rotating connection structure, to disperse mold pressure through multi-stage buffering, thereby enhancing structural stability and buffering effect.

Benefits of technology

It effectively avoids the elastic fatigue of a single buffer mechanism, improves the uniformity of the buffering effect and the service life of the mold, and enhances the overall stability and durability of the fixed mold plate.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224170344U_ABST
    Figure CN224170344U_ABST
Patent Text Reader

Abstract

The utility model discloses a fixed mold plate structure of an injection molding module, which belongs to the field of injection molding modules and is characterized in that through holes are formed in corners of a fixed mold plate body, a plurality of groups of cooling joints are arranged on the front side of the fixed mold plate body, a water cooling pipeline is arranged in the fixed mold plate body and is connected with the plurality of groups of cooling joints, and an injection molding cavity is formed in the left side of the fixed mold plate body; the inner wall of the water cooling pipeline surrounds the inner wall of the fixed mold plate body on the right side of the injection molding cavity, a buffer assembly is arranged on the right side of the fixed mold plate body, and a buffer plate is mounted on the right side of the buffer assembly; through the arrangement of the buffer assembly, the force generated when the die and the mounting plate are pressed is effectively dispersed, the problem of elastic fatigue caused by long-time frequent pressing of a single buffer mechanism is avoided, and due to the arc-shaped design of the outer-layer buffer sheet, the middle-layer buffer sheet and the inner-layer buffer sheet in the buffer assembly, the stability of the structure is enhanced, and the service life of the die is prolonged. And the buffering effect is more uniform.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of injection molding module technology, specifically a fixed template structure for injection molding modules. Background Technology

[0002] In recent years, the application of injection molding machines has become more and more widespread. When a traditional injection molding machine closes the mold, the clamping force is applied to the fixed platen through the tie rod nut, and then the clamping force is applied to the mold through the fixed platen.

[0003] Chinese utility model patent discloses a mold platen for an injection molding machine (publication number: CN217891675U). The mounting mechanism includes a buffer mechanism and an adjustment mechanism. The adjustment mechanism includes a sleeve rod with a cross-shaped slot inside. A cross-shaped insert block is movably connected inside the cross-shaped slot. A cross-shaped rod is located on the right side wall of the cross-shaped insert block. An adjustment screw is located at the end of the cross-shaped rod away from the cross-shaped insert block, and an adjustment threaded tube is threaded onto the outer surface of the adjustment screw. While this patent, through the inclusion of a buffer mechanism and adjustment components, changes the distance between the mold connecting plate and the mounting plate, thereby adjusting the buffering effect and improving the practicality of the buffer mechanism, the standalone buffer mechanism is prone to elastic fatigue under prolonged and frequent pressure on the mold and mounting plate. This can lead to poor buffering performance, affecting the injection molding effect and the mold's service life. Utility Model Content

[0004] This utility model provides a fixed template structure for injection molding modules, aiming to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a fixed template body, with through holes at each corner of the fixed template body. Multiple cooling joints are provided on the front side of the fixed template body. A water-cooling pipe is installed inside the fixed template body and connected to the multiple cooling joints. An injection cavity is provided on the left side of the fixed template body. The inner wall of the water-cooling pipe surrounds the inner wall of the fixed template body on the right side of the injection cavity. A buffer assembly is provided on the right side of the fixed template body, and a buffer plate is installed on the right side of the buffer assembly.

[0006] As a preferred technical solution of this application, the buffer assembly includes two sets of fixing seats, which are fixedly installed on the right side of the fixed template body. An outer buffer sheet is sleeved on the two sets of fixing seats. A middle buffer sheet is provided on the right side of the outer buffer sheet, and an inner buffer sheet is provided on the right side of the middle buffer sheet. Multiple sets of bolts are movably inserted on the outer buffer sheet, the middle buffer sheet, and the inner buffer sheet. A connecting plate is fixedly installed on the right end of the multiple sets of bolts.

[0007] As a preferred technical solution of this application, the buffer assembly further includes four sets of first connecting rotating seats. The four sets of first connecting rotating seats are rotatably mounted on the right side of the connecting plate, and four sets of second connecting rotating seats are rotatably mounted on the left side of the buffer plate. Each of the four sets of second connecting rotating seats is fixedly mounted with a fixing plate. Each of the four sets of fixing plates is fixedly mounted with a fixing sleeve. Each of the four sets of fixing plates is fixedly mounted with multiple sets of crossbars. At the opposite end of the multiple sets of crossbars connected to the four sets of fixing plates, four sets of pressing plates are fixedly mounted. The four sets of pressing plates are fixedly connected to the four sets of first connecting rotating seats, and an adjusting spring is provided between each of the four sets of fixing sleeves and the four sets of pressing plates.

[0008] As a preferred technical solution of this application, two sets of guide holes are provided at both the upper and lower ends of the fixed template body, and sliding rods are movably inserted into the four sets of guide holes. The right ends of the four sets of sliding rods are fixedly connected to the buffer plate.

[0009] As a preferred technical solution of this application, the buffer component is located between the fixed template body and the buffer plate, and the fixed template body and the buffer plate are arranged horizontally and parallel to each other.

[0010] As a preferred technical solution of this application, the four sets of first connecting rotating seats, the four sets of second connecting rotating seats, the four sets of fixing plates, the four sets of fixing sleeves, the multiple sets of crossbars, the four sets of pressing plates and the four sets of adjusting springs are arranged in a figure-eight inclined shape.

[0011] As a preferred technical solution of this application, the outer buffer sheet, the middle buffer sheet and the inner buffer sheet are all made of spring steel, and the surfaces of the outer buffer sheet, the middle buffer sheet and the inner buffer sheet are all provided with aluminum alloy.

[0012] As a preferred technical solution of this application, the outer buffer sheet, the middle buffer sheet and the inner buffer sheet are all arc-shaped. The front and rear ends of the outer buffer sheet, the middle buffer sheet and the inner buffer sheet are close to the right side of the fixed template body, and the middle part of the outer buffer sheet, the middle buffer sheet and the inner buffer sheet are close to the left side of the buffer plate.

[0013] Compared with the existing technology, the new utility model has the following advantages: the setting of the buffer component effectively disperses the force when the mold and the mounting plate are under pressure, avoiding the elastic fatigue problem caused by the single buffer mechanism being subjected to frequent pressure for a long time. Moreover, the arc-shaped design of the outer buffer plate, middle buffer plate and inner buffer plate in the buffer component not only enhances the stability of the structure, but also makes the buffering effect more uniform and further extends the service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2This is a schematic cross-sectional view of the structure of this utility model from the right side.

[0016] Figure 3 This is a schematic diagram of the left-side structure of this utility model;

[0017] Figure 4 This is a schematic diagram showing the connection of the fixed base, outer buffer sheet, middle buffer sheet, inner buffer sheet, bolts and connecting plate in the buffer assembly of this utility model;

[0018] Figure 5 This is a schematic diagram showing the connection of the first connecting rotating seat, the second connecting rotating seat, the fixed plate, the fixed sleeve, the crossbar, the compression plate, and the adjusting spring in the buffer assembly of this utility model.

[0019] In the diagram: 1. Fixed template body; 2. Through hole; 3. Cooling joint; 4. Water cooling pipe; 5. Injection cavity; 6. Guide hole; 7. Sliding rod; 8. Buffer plate; 9. Fixed seat; 10. Outer buffer sheet; 11. Middle buffer sheet; 12. Inner buffer sheet; 13. Bolt; 14. Connecting plate; 15. First connecting rotating seat; 16. Second connecting rotating seat; 17. Fixed plate; 18. Fixed sleeve; 19. Crossbar; 20. Extrusion plate; 21. Adjusting spring. Detailed Implementation

[0020] 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.

[0021] This utility model provides a fixed template structure for injection molding modules, such as... Figure 1-5 As shown, the injection molding module fixed template structure includes a fixed template body 1. Through holes 2 are provided at the corners of the fixed template body 1. Multiple sets of cooling joints 3 are provided on the front side of the fixed template body 1. Water cooling pipes 4 are provided inside the fixed template body 1 and are connected to the multiple sets of cooling joints 3. An injection cavity 5 is provided on the left side of the fixed template body 1. The inner wall of the water cooling pipes 4 surrounds the inner wall of the fixed template body 1 on the right side of the injection cavity 5. A buffer assembly is provided on the right side of the fixed template body 1, and a buffer plate 8 is installed on the right side of the buffer assembly.

[0022] When in use, when the fixed template body 1 applies pressure to the buffer plate 8, the buffer assembly effectively disperses the force of the mold and the mounting plate under pressure, avoiding the elastic fatigue problem caused by the single buffer mechanism being subjected to frequent pressure over a long period of time.

[0023] As a preferred technical solution of this application, the buffer assembly includes two sets of fixing seats 9, which are fixedly installed on the right side of the fixed template body 1. An outer buffer sheet 10 is sleeved on the two sets of fixing seats 9. A middle buffer sheet 11 is provided on the right side of the outer buffer sheet 10, and an inner buffer sheet 12 is provided on the right side of the middle buffer sheet 11. Multiple sets of bolts 13 are movably inserted on the outer buffer sheet 10, the middle buffer sheet 11, and the inner buffer sheet 12. A connecting plate 14 is fixedly installed on the right end of the multiple sets of bolts 13.

[0024] When the fixed template body 1 applies rightward pressure to the buffer plate 8, the pressure is first transmitted to the connecting plate 14, and then transmitted to the outer buffer plate 10, the middle buffer plate 11 and the inner buffer plate 12 through multiple sets of bolts 13. Therefore, the pressure applied by the fixed template body 1 can be effectively absorbed and dispersed, and the buffering effect is more uniform, which further improves the service life of the buffer assembly.

[0025] The buffer assembly also includes four sets of first connecting rotating seats 15, which are rotatably mounted on the right side of the connecting plate 14. Four sets of second connecting rotating seats 16 are rotatably mounted on the left side of the buffer plate 8. Each of the four sets of second connecting rotating seats 16 is fixedly mounted with a fixing plate 17. Each of the four sets of fixing plates 17 is fixedly mounted with a fixing sleeve 18. Each of the four sets of fixing plates 17 is fixedly mounted with multiple sets of crossbars 19. At the opposite end of the multiple sets of crossbars 19 connected to the four sets of fixing plates 17, four sets of pressing plates 20 are fixedly mounted. The four sets of pressing plates 20 are fixedly connected to the four sets of first connecting rotating seats 15. Each of the four sets of fixing sleeves 18 and the four sets of pressing plates 20 is provided with an adjusting spring 21.

[0026] When the fixed template body 1 applies pressure to the buffer plate 8, the pressure is not only buffered by the outer buffer plate 10, the middle buffer plate 11 and the inner buffer plate 12, but also further dispersed by four sets of first connecting rotating seats 15, four sets of second connecting rotating seats 16, four sets of fixed plates 17, four sets of fixed sleeves 18, multiple sets of crossbars 19, four sets of extrusion plates 20 and four sets of adjusting springs 21, so as to avoid excessive local pressure, thereby enhancing the overall stability and durability of the buffer assembly. At the same time, the setting of the adjusting springs 21 can also reduce friction to a certain extent, making the buffering process smoother.

[0027] The upper and lower ends of the template body 1 are provided with two sets of guide holes 6, and sliding rods 7 are movably inserted into the four sets of guide holes 6. The right ends of the four sets of sliding rods 7 are fixedly connected to the buffer plate 8.

[0028] The sliding rod 7 not only enhances the connection and guiding stability between the fixed template body 1 and the buffer plate 8, but also allows the buffer plate 8 to have a certain amount of room to move when subjected to pressure, so as to better absorb and disperse pressure in conjunction with the buffer assembly. In addition, the movable insertion design of the sliding rod 7 in the guide hole 6 makes the whole structure have a certain degree of flexibility when subjected to force, improving the overall adaptability and durability of the injection molding fixed template structure.

[0029] The buffer assembly is located between the fixed template body 1 and the buffer plate 8, which are arranged horizontally and parallel to each other.

[0030] The parallel arrangement of the template body 1 and the buffer plate 8 on the left and right sides also helps to maintain the balance of the structure under stress and prevent damage or deformation caused by uneven stress.

[0031] The four sets of first connecting rotating seats 15, the four sets of second connecting rotating seats 16, the four sets of fixing plates 17, the four sets of fixing sleeves 18, the multiple sets of crossbars 19, the four sets of pressing plates 20 and the four sets of adjusting springs 21 are arranged in a V-shape.

[0032] This figure-eight-shaped tilt not only further enhances the stability of the structure but also helps to distribute the force more evenly throughout the entire cushioning assembly, thereby improving the overall cushioning effect and durability. Furthermore, this tilted design helps guide the relative movement between components under stress, making the cushioning process smoother and more efficient.

[0033] The outer buffer sheet 10, the middle buffer sheet 11 and the inner buffer sheet 12 are all made of spring steel, and the surfaces of the outer buffer sheet 10, the middle buffer sheet 11 and the inner buffer sheet 12 are all provided with aluminum alloy.

[0034] The spring steel material gives the outer buffer sheet 10, the middle buffer sheet 11, and the inner buffer sheet 12 good elasticity and recovery ability, enabling them to withstand greater pressure and quickly return to their original state. The aluminum alloy not only improves the corrosion resistance and wear resistance of the outer buffer sheet 10, the middle buffer sheet 11, and the inner buffer sheet 12, but also reduces the overall weight, making the injection molding die plate structure lighter and easier to operate.

[0035] The outer buffer sheet 10, the middle buffer sheet 11 and the inner buffer sheet 12 are all arc-shaped. The front and rear ends of the outer buffer sheet 10, the middle buffer sheet 11 and the inner buffer sheet 12 are close to the right side of the fixed template body 1, and the middle part of the outer buffer sheet 10, the middle buffer sheet 11 and the inner buffer sheet 12 are close to the left side of the buffer plate 8.

[0036] The arc design also guides pressure to be distributed along a more even path, avoiding damage caused by excessive local pressure. In long-term use, this design can significantly extend the service life of the buffer components and improve the overall performance and stability of the injection molding module's fixed platen structure.

[0037] Working Principle: When using this injection mold fixed platen structure, the outer buffer sheet 10, middle buffer sheet 11, and inner buffer sheet 12 form the first-level buffer structure. Under pressure, they effectively absorb and disperse the pressure from the mold. Subsequently, the pressure continues to be transmitted to the second-level buffer structure, which consists of four sets of first connecting rotating seats 15, four sets of second connecting rotating seats 16, four sets of fixed plates 17, four sets of fixed sleeves 18, multiple sets of crossbars 19, four sets of extrusion plates 20, and four sets of adjusting springs 21. These components, through rotating connections and tilting arrangements, further disperse the pressure and guide it to the left and right sides and top and bottom ends of the buffer plate 8. This design not only enhances the stability of the structure but also improves the buffering effect, enabling the injection mold fixed platen structure to withstand greater clamping forces and maintain long-term stability and durability.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fixed template structure for an injection molding module, comprising a fixed template body (1), characterized in that: The fixed template body (1) has through holes (2) at its corners. The fixed template body (1) has multiple sets of cooling joints (3) on its front side. The fixed template body (1) has water cooling pipes (4) inside it. The water cooling pipes (4) are connected to the multiple sets of cooling joints (3). The fixed template body (1) has an injection cavity (5) on its left side. The inner wall of the water cooling pipes (4) surrounds the inner wall of the fixed template body (1) on the right side of the injection cavity (5). The fixed template body (1) has a buffer assembly on its right side. The buffer assembly has a buffer plate (8) installed on its right side.

2. The injection molding module fixed template structure according to claim 1, characterized in that: The buffer assembly includes two sets of fixing seats (9), which are fixedly installed on the right side of the fixed template body (1). An outer buffer sheet (10) is sleeved on the two sets of fixing seats (9). A middle buffer sheet (11) is provided on the right side of the outer buffer sheet (10), and an inner buffer sheet (12) is provided on the right side of the middle buffer sheet (11). Multiple sets of bolts (13) are movably inserted on the outer buffer sheet (10), the middle buffer sheet (11), and the inner buffer sheet (12). A connecting plate (14) is fixedly installed on the right end of the multiple sets of bolts (13).

3. The injection molding module fixed template structure according to claim 1, characterized in that: The buffer assembly also includes four sets of first connecting rotating seats (15), which are rotatably mounted on the right side of the connecting plate (14). Four sets of second connecting rotating seats (16) are rotatably mounted on the left side of the buffer plate (8). Each of the four sets of second connecting rotating seats (16) is fixedly mounted with a fixing plate (17). Each of the four sets of fixing plates (17) is fixedly mounted with a fixing sleeve (18). Each of the four sets of fixing plates (17) is fixedly mounted with multiple sets of crossbars (19). Each of the multiple sets of crossbars (19) is fixedly mounted with four sets of pressing plates (20) on the opposite end of the connection between the crossbars (19) and the four sets of fixing plates (17). Each of the four sets of pressing plates (20) is fixedly connected to the four sets of first connecting rotating seats (15). Each of the four sets of fixing sleeves (18) and the four sets of pressing plates (20) is provided with an adjusting spring (21).

4. The injection molding module fixed template structure according to claim 1, characterized in that: The fixed template body (1) has two sets of guide holes (6) at both the upper and lower ends. Sliding rods (7) are movably inserted into the four sets of guide holes (6). The right ends of the four sets of sliding rods (7) are fixedly connected to the buffer plate (8).

5. The injection molding module fixed template structure according to claim 1, characterized in that: The buffer assembly is located between the fixed template body (1) and the buffer plate (8), and the fixed template body (1) and the buffer plate (8) are arranged in parallel left and right.

6. The injection molding module fixed template structure according to claim 3, characterized in that: The four sets of first connecting rotating seats (15), the four sets of second connecting rotating seats (16), the four sets of fixing plates (17), the four sets of fixing sleeves (18), the multiple sets of crossbars (19), the four sets of pressing plates (20) and the four sets of adjusting springs (21) are arranged in a V-shape.

7. The injection molding module fixed template structure according to claim 2, characterized in that: The outer buffer sheet (10), the middle buffer sheet (11) and the inner buffer sheet (12) are all made of spring steel, and the surfaces of the outer buffer sheet (10), the middle buffer sheet (11) and the inner buffer sheet (12) are all provided with aluminum alloy.

8. The injection molding module fixed template structure according to claim 2, characterized in that: The outer buffer sheet (10), the middle buffer sheet (11) and the inner buffer sheet (12) are all arc-shaped. The front and rear ends of the outer buffer sheet (10), the middle buffer sheet (11) and the inner buffer sheet (12) are close to the right side of the fixed template body (1), and the middle part of the outer buffer sheet (10), the middle buffer sheet (11) and the inner buffer sheet (12) is close to the left side of the buffer plate (8).

Citation Information

Patent Citations

  • Fixed mold plate of injection molding machine

    CN217891675U