Frame type mold pressing mechanism of injection molding machine
By using a frame-type molding mechanism with buffering and centering design, the problems of insufficient buffering and inaccurate centering in traditional injection molding machine molding mechanisms are solved, achieving an efficient and safe molding process and improving product quality and production efficiency.
Patent Information
- Application Number
- CN202520417904.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Traditional injection molding machine compression mechanisms lack effective buffering mechanisms, which can cause direct contact between the upper and lower mold plates, potentially damaging the processed parts, affecting product quality, and requiring manual adjustment for centering, thus reducing work efficiency.
The frame-type compression molding mechanism includes a primary buffer component and a secondary buffer component. Combined with the buffer mechanism and centering component, the design of sleeve rods, rotating blocks, balls, springs and triangular blocks achieves the functions of buffering and centering, reducing impact force and adjustment time.
It effectively reduces impact damage to processed parts, improves product qualification rate and surface quality, enhances production efficiency and centering accuracy, and ensures the safety and accuracy of processed parts during the molding process.
Smart Images
Figure CN223821039U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of compression molding technology, and in particular to a frame-type compression molding mechanism for injection molding machines. Background Technology
[0002] The compression molding mechanism of an injection molding machine is a key part of the injection molding process. It is mainly responsible for pressing molten plastic material into the mold cavity to form the desired plastic product. The working principle and structure of the compression molding mechanism are relatively complex, consisting of multiple parts, including the mold clamping system, injection system, hydraulic transmission system, and electrical control system.
[0003] Traditional injection molding machine compression mechanisms often use simple rigid connections. However, during the compression process, due to the lack of an effective buffer mechanism, direct contact between the upper and lower mold plates may damage the workpiece and affect product quality. In addition, traditional compression mechanisms often require additional centering devices or manual adjustments to ensure the accurate positioning of the workpiece, thereby reducing work efficiency. Utility Model Content
[0004] To overcome the above deficiencies, this utility model provides a frame-type compression molding mechanism for injection molding machines, which aims to improve the problem mentioned in the prior art that "direct contact between the upper and lower mold plates may cause damage to the processed parts and affect product quality".
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a frame-type compression molding mechanism for an injection molding machine, comprising a compression molding device, a bottom template being provided inside the compression molding device, a track block being fixedly connected to the top of the compression molding device, a support plate being fixedly connected to the right side of the track block near the top of the compression molding device, a U-shaped block being slidably connected to the top of the track block, a buffer mechanism being provided inside the U-shaped block, the buffer mechanism comprising a primary buffer assembly and a secondary buffer assembly, the primary buffer assembly comprising a first sleeve rod, the first sleeve rod being rotatably connected to the inner wall of the U-shaped block, a second sleeve rod being slidably connected to the inner wall of the first sleeve rod, a rotating block being rotatably connected to the left side of the second sleeve rod, a ball being fixedly connected to the outer wall of the rotating block, and a groove being provided on the inner wall of the first sleeve rod.
[0006] As a further description of the above technical solution:
[0007] The secondary buffer assembly includes a circular block that is slidably connected to the inner wall of the sleeve rod. The circular block and the sleeve rod are elastically connected by a spring. One end of the spring is fixedly connected to the inner wall of the sleeve rod, and the other end of the spring is fixedly connected to the left side of the circular block.
[0008] As a further description of the above technical solution:
[0009] A top rod is fixedly connected to the left side of the rotating block, and a centering component is provided inside the molding device.
[0010] As a further description of the above technical solution:
[0011] The centering component includes a triangular block, which is fixedly connected inside the molding device. A T-shaped groove is formed on the front surface of the triangular block, and a T-shaped block is slidably connected to the inner wall of the T-shaped groove.
[0012] As a further description of the above technical solution:
[0013] The T-shaped block and the triangular block are elastically connected by a second spring. One end of the second spring is fixedly connected to the inner wall of the T-shaped groove, and the other end of the second spring is fixedly connected to the right side of the T-shaped block.
[0014] As a further description of the above technical solution:
[0015] The front surface of the T-shaped block is fixedly connected to an extrusion block. There are four sets of U-shaped blocks, and the other two sets of U-shaped blocks are fixedly connected to the top of the support plate. The right side of the sleeve rod is rotatably connected to the inner wall of the other two sets of U-shaped blocks.
[0016] As a further description of the above technical solution:
[0017] The groove is spiral-shaped, and the sphere slides inside the groove.
[0018] This utility model has the following beneficial effects:
[0019] 1. In this utility model, by setting a primary buffer assembly and a secondary buffer assembly, the impact force of the upper template on the workpiece during the pressing process can be effectively reduced. The sliding fit between sleeve rod 2 and sleeve rod 1 in the primary buffer assembly, as well as the rotation of the rotating block and the ball, can increase the stroke, thereby playing a preliminary buffering role. In addition, the secondary buffer assembly further absorbs and mitigates the impact force through the elastic connection between the round block and spring 1, ensuring that the workpiece will not be damaged due to excessive impact during the pressing process, thus improving the product qualification rate and surface quality.
[0020] 2. In this invention, the structure of the triangular block and the T-shaped block ensures that when the upper template moves towards the lower template, the extrusion block is subjected to pressure and retracts inward, thereby fixing the workpiece in the center position. This design not only reduces the time for manual adjustment and improves production efficiency, but also ensures the centering accuracy of the workpiece, thus improving the overall quality of the product. Attached Figure Description
[0021] Figure 1 This is a three-dimensional structural diagram of an overall device of a frame-type compression molding mechanism for an injection molding machine according to the present invention;
[0022] Figure 2 This is a three-dimensional cross-sectional view of the sleeve rod of a frame-type compression molding mechanism for an injection molding machine according to the present invention.
[0023] Figure 3 This is a three-dimensional structural breakdown diagram of the triangular block, extrusion block, and T-shaped block of a frame-type compression molding mechanism for an injection molding machine according to this utility model.
[0024] Legend:
[0025] 1. Pressing device; 2. Support plate; 3. Buffer mechanism; 31. Groove; 32. Rotating block; 33. Ball; 35. Sleeve rod two; 36. Sleeve rod one; 4. U-shaped block; 5. Track block; 6. Bottom template; 7. Centering component; 71. Extrusion block; 72. T-shaped block; 73. T-slot; 74. Spring two; 75. Triangular block; 81. Spring one; 82. Round block; 83. Top rod. Detailed Implementation
[0026] 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.
[0027] Reference Figure 1 - Figure 3This utility model provides an embodiment of a frame-type molding mechanism for an injection molding machine, including a molding device 1. The molding device 1 is the molding mechanism of the injection molding machine and is a key part in the injection molding process. It is mainly responsible for pressing molten plastic material into the mold cavity to form the desired plastic product. The working principle and structure of the molding mechanism are relatively complex, consisting of multiple parts, mainly including a mold clamping system, an injection system, a hydraulic transmission system, and an electrical control system. This technology is existing technology, and since it is existing technology and can be implemented by those skilled in the art, it will not be described in detail in this case. The molding device 1 has a bottom template 6 inside, and a track block 5 is fixedly connected to the top of the molding device 1. A support plate 2 is fixedly connected to the right side of the track block 5 near the top of the molding device 1. The support plate 2 is used for... The U-shaped block 4 is slidably connected to the top of the track block 5 to support the U-shaped block 4. The U-shaped block 4 can slide laterally on the track block 5. The U-shaped block 4 is equipped with a buffer mechanism 3 inside. The buffer mechanism 3 mainly buffers the pressure generated during the molding process, thereby increasing safety. The buffer mechanism 3 includes a primary buffer component and a secondary buffer component. Through the cooperation of the primary buffer component and the secondary buffer component, the molding process can be buffered to a large extent. The primary buffer component includes a sleeve rod 36, which is rotatably connected to the inner wall of the U-shaped block 4. The inner wall of the sleeve rod 36 is slidably connected to a sleeve rod 35. The left side of the sleeve rod 35 is rotatably connected to a rotating block 32. The outer wall of the rotating block 32 is fixedly connected to a ball 33. The inner wall of the sleeve rod 36 is provided with a groove 31, and the ball 33 and the groove 31 are adapted to each other.
[0028] Reference Figure 1 - Figure 3 The secondary buffer assembly includes a circular block 82, which is slidably connected to the inner wall of the sleeve rod 36. The circular block 82 and the sleeve rod 36 are elastically connected by a spring 81. The reverse force of the spring 81 can further improve the buffering effect. One end of the spring 81 is fixedly connected to the inner wall of the sleeve rod 36, and the other end of the spring 81 is fixedly connected to the left side of the circular block 82. A top rod 83 is fixedly connected to the left side of the rotating block 32. The groove 31 is set in a spiral shape, and the ball 33 slides inside the groove 31. The ball 33 can slide along the trajectory of the groove 31, and the rotating block 32 will rotate along with the ball 33 when it slides. Since the rotating block 32 and the sleeve rod 35 are rotatably connected, there will be no motion interference. The mold pressing device 1 is equipped with a centering component 7 for centering the workpiece.
[0029] Reference Figure 1 - Figure 3The central component 7 includes a triangular block 75, which is triangular in shape and has a bevel on the side closest to the workpiece. The triangular block 75 is fixedly connected to the inside of the molding device 1. A T-shaped groove 73 is opened on the front surface of the triangular block 75. A T-shaped block 72 is slidably connected to the inner wall of the T-shaped groove 73. The T-shaped block 72 and the triangular block 75 are elastically connected by a second spring 74. The reverse force of the second spring 74 assists the extrusion block 71 to reset, thereby facilitating the next processing. One end of the second spring 74 is fixedly connected to the inner wall of the T-shaped groove 73, and the other end of the second spring 74 is fixedly connected to the right side of the T-shaped block 72. The extrusion block 71 is fixedly connected to the front surface of the T-shaped block 72. Four sets of U-shaped blocks 4 are provided, and the other two sets of U-shaped blocks 4 are fixedly connected to the top of the support plate 2. The right side of the sleeve rod 35 is rotatably connected to the inner wall of the other two sets of U-shaped blocks 4.
[0030] Working principle: In use, the workpiece to be processed is first placed on the extrusion block 71, and then the pressing device 1 is started. The pressing device 1 moves the upper template towards the bottom template 6 and extrudes the workpiece. When the upper template moves, it drives the support plate 2 to move, and the support plate 2 drives the U-shaped block 4 to move. Since the sleeve rod 35 is rotatably connected to the inner wall of the U-shaped block 4, when the support plate 2 moves, it will drive the sleeve rod 35 to move and cause the sleeve rod 35 to rotate. When the sleeve rod 35 moves, since the rotating block 32 and the sleeve rod 35 are rotatably connected, and the ball 33 slides inside the groove 31, when the sleeve rod 35 moves... The rotating block 32 will rotate and the ball 33 will continue to slide in the groove 31, increasing the stroke and thus playing a buffering role. In addition, since the first sleeve 36 is under pressure when the second sleeve 35 moves, and the U-shaped block 4 is slidably connected to the top of the track block 5, when the second sleeve 35 moves, the two U-shaped blocks 4 will move towards the middle on the track block 5. When the rotating block 32 moves to the left, it will also drive the top rod 83 to move together. When the top rod 83 moves and contacts the round block 82, it will squeeze the round block 82, causing the round block 82 to move to the left. The round block 82 moves to the left and squeezes the first spring 81. The reverse force of the first spring 81 plays a buffering role.
[0031] When the triangular block 75 moves to the left along with the upper template, the extrusion block 71 will contact the bottom template 6. Since the triangular block 75 is set as a triangle and the T-shaped block 72 is slidably connected to the inner wall of the T-shaped groove 73, the T-shaped block 72 and the extrusion block 71 are fixedly connected. The extrusion block 71 will be subjected to pressure, causing the T-shaped block 72 to slide in the T-shaped groove 73. As the triangular block 75 tilts, it will shrink inward. When the T-shaped block 72 moves, it will also compress the second spring 74. At this time, the four extrusion blocks 71 move towards the center at the same time, so that the processed part can be quickly centered. After the injection molding is completed, the extrusion block 71 will be reset by the reverse force of the second spring 74.
[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A frame-type compression molding mechanism for an injection molding machine, comprising a compression molding device (1), characterized in that: The molding device (1) is provided with a bottom template (6) inside. The top of the molding device (1) is fixedly connected to a track block (5). A support plate (2) is fixedly connected to the right side of the track block (5) near the top of the molding device (1). A U-shaped block (4) is slidably connected to the top of the track block (5). A buffer mechanism (3) is provided inside the U-shaped block (4). The buffer mechanism (3) includes a primary buffer assembly and a secondary buffer assembly. The primary buffer assembly includes a sleeve rod one (36). The sleeve rod one (36) is rotatably connected to the inner wall of the U-shaped block (4). The inner wall of the sleeve rod one (36) is slidably connected to a sleeve rod two (35). The left side of the sleeve rod two (35) is rotatably connected to a rotating block (32). A ball (33) is fixedly connected to the outer wall of the rotating block (32). A groove (31) is opened on the inner wall of the sleeve rod one (36).
2. The frame-type compression molding mechanism for an injection molding machine according to claim 1, characterized in that: The secondary buffer assembly includes a circular block (82), which is slidably connected to the inner wall of the sleeve rod (36). The circular block (82) and the sleeve rod (36) are elastically connected by a spring (81). One end of the spring (81) is fixedly connected to the inner wall of the sleeve rod (36), and the other end of the spring (81) is fixedly connected to the left side of the circular block (82).
3. The frame-type compression molding mechanism for an injection molding machine according to claim 1, characterized in that: A top rod (83) is fixedly connected to the left side of the rotating block (32), and a centering component (7) is provided inside the molding device (1).
4. The frame-type compression molding mechanism for an injection molding machine according to claim 3, characterized in that: The centering component (7) includes a triangular block (75), which is fixedly connected inside the molding device (1). A T-shaped groove (73) is provided on the front surface of the triangular block (75), and a T-shaped block (72) is slidably connected to the inner wall of the T-shaped groove (73).
5. The frame-type compression molding mechanism for an injection molding machine according to claim 4, characterized in that: The T-shaped block (72) and the triangular block (75) are elastically connected by a second spring (74). One end of the second spring (74) is fixedly connected to the inner wall of the T-shaped groove (73), and the other end of the second spring (74) is fixedly connected to the right side of the T-shaped block (72).
6. The frame-type compression molding mechanism for an injection molding machine according to claim 4, characterized in that: The front surface of the T-shaped block (72) is fixedly connected to the extrusion block (71), and four sets of U-shaped blocks (4) are provided. The other two sets of U-shaped blocks (4) are fixedly connected to the top of the support plate (2), and the right side of the sleeve rod (35) is rotatably connected to the inner wall of the other two sets of U-shaped blocks (4).
7. The frame-type compression molding mechanism for an injection molding machine according to claim 1, characterized in that: The groove (31) is spiral-shaped, and the sphere (33) slides inside the groove (31).