Injection mold with damping function

Abstract

The utility model relates to the field of injection molds, and discloses an injection mold with a damping function, which comprises a fixed mold, the fixed mold is arranged above a bearing plate, a movable mold is arranged above the fixed mold, the four corners of the top surface of the fixed mold are respectively provided with a containing groove, the inner bottom surface of each containing groove is fixedly provided with a limiting column, and the limiting columns are arranged in the containing grooves. A spring is wound on the outer wall of the limiting column, one end of the spring is fixed to the inner bottom face of the containing groove, a pressing sleeve is arranged on the inner wall of the containing groove in a sliding mode, the other end of the spring is fixed to the bottom end of the pressing sleeve, and a rubber ring is fixed to the outer wall of the pressing sleeve. According to the utility model, through the matching of the pressing sleeve, the spring and the rubber ring, the impact force generated when the movable mold is closed can be absorbed when the fixed mold and the movable mold are closed, and the spring and the rubber ring can effectively convert impact energy into elastic potential energy, so that the surface of the mold body is prevented from being damaged due to violent collision.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold with a shock-absorbing function. Background Art

[0002] Injection molds are tools used to produce plastic products; they also give them a complete structure and precise dimensions. Injection molding is a processing method used for mass production of certain complex-shaped components. Specifically, the heated, molten plastic is injected into the mold cavity under high pressure by an injection molding machine, and the molded product is obtained after cooling and solidification. Injection molds require extrusion during use, which generates high pressure. After long-term use, the mold position will shift. The molds are often fitted using cylinders, and excessive contact force between the upper and lower molds can also affect the mold, resulting in unstable injection molding results.

[0003] The Chinese patent with announcement number CN219191125U is an injection mold with stable injection molding effect, which relates to the technical field of injection molds. The utility model includes a base plate, an upper mold and a lower mold. A hollow rod is fixedly provided on the upper surface of the base plate, and a top plate is fixedly provided on the upper end of the hollow rod.

[0004] In the above scheme, by setting up a buffer spring, a square hollow block, and hydraulic oil, the effects of vibration reduction, damping, and buffering are achieved, thereby performing buffering before the upper mold and the lower mold contact each other. However, it has the following disadvantages: although this injection mold can buffer and reduce vibration of the upper mold during movement, the upper and lower mold surfaces are in direct contact when the mold is closed, resulting in a certain impact force between the upper and lower molds when the mold is closed, thereby reducing the use effect of the injection mold. Utility Model Content

[0005] The purpose of the utility model is to provide an injection mold with a shock-absorbing function to solve the problem that although the injection mold can buffer and reduce vibration of the upper mold when moving, the upper and lower mold surfaces are in direct contact when closing the mold, resulting in the upper and lower molds generating a certain impact force when closing the mold, thereby reducing the use effect of the injection mold.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical scheme: an injection mold with a shock-absorbing function, comprising a fixed mold, the fixed mold is arranged above the load-bearing plate, and a movable mold is arranged above the fixed mold, and a receiving groove is provided at the four corners of the top surface of the fixed mold, the inner bottom surface of the receiving groove is fixed with a limiting column, the outer wall of the limiting column is wound with a spring, one end of the spring is fixed to the inner bottom surface of the receiving groove, a pressing sleeve is slidably provided on the inner wall of the receiving groove, the other end of the spring is fixed to the bottom end of the pressing sleeve, a rubber ring is fixed to the outer wall of the pressing sleeve, and a limiting hole is provided at the four corners of the top surface of the movable mold, the limiting column is slidably connected to the limiting hole, and the pressing sleeve is slidably arranged with the limiting hole, the top surface of the load-bearing plate is provided with a plurality of mounting grooves, and a damper is fixed on the inner wall of the mounting groove, the output end of the damper is fixed to the bottom surface of the fixed mold, the damper reduces the vibration amplitude of the mold body, and can effectively reduce the noise generated by the vibration of the mold body.

[0007] Preferably, a limit frame is fixed on the bottom surface of the movable mold, and a limit groove is provided on the top surface of the fixed mold. The limit groove is communicated with the internal cavity of the fixed mold, and the limit frame and the limit groove are clamped together. In the mold closing state, the clamping connection between the limit frame and the limit groove makes the movable mold and the fixed mold more tightly connected, thereby enhancing the integrity of the entire mold body structure. This helps to withstand the pressure of the plastic melt during the injection molding process, prevents slight displacements between the mold body components, and thus reduces noise generated by relative movement between components.

[0008] Preferably, a mounting bracket is fixed to the top surface of the load-bearing plate, a mounting hole is provided on the top surface of the mounting bracket, a cylinder is fixed to the inner wall of the mounting hole, limiting brackets are fixed on the left and right sides of the movable mold, two sliding grooves are provided on the left and right sides of the inner wall of the mounting bracket, the limiting bracket is slidably connected to the sliding groove, and the cooperation between the limiting bracket and the sliding groove limits the moving range of the movable mold in the left and right directions, ensuring that the movable mold can only move within a specific range, thereby improving the stability of the mold body movement, helping to prevent the movable mold from excessively shaking or deviating from the normal position during the opening and closing process, and reducing vibration and noise caused by the instability of the mold body.

[0009] Preferably, the top surface of the fixed mold and the bottom surface of the movable mold are both provided with injection holes, and the left sides of the fixed mold and the movable mold are fixed with fixed shells, which can limit and fix the injection head, effectively preventing the injection head from accidentally falling off, thereby making the plastic melt more stably injected into the injection hole.

[0010] Preferably, a plurality of rubber pads are fixed to the top surface of the fixed mold. The elasticity of the rubber pads can absorb the impact force generated when the movable mold and the fixed mold are closed, preventing the mold body from being damaged due to severe collision, and reducing vibration and noise caused by collision.

[0011] Preferably, a plurality of sound insulation pads are fixed to the outer walls of the fixed mold and the movable mold. The sound insulation pads have a certain elasticity and can effectively prevent the mold body from being damaged by collision with external forces, thereby improving the integrity of the mold body.

[0012] Preferably, the inner walls of the cavities of the fixed mold and the movable mold are coated with a release coating, which makes it easier for workers to demold the product after injection molding, thereby preventing the product from sticking in the cavity, thereby saving a lot of labor and time costs.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. Through the cooperation of the pressing sleeve, spring and rubber ring, the impact force generated when the fixed mold and the movable mold are closed can be absorbed. The spring and rubber ring can effectively convert the impact energy into elastic potential energy to avoid damage to the surface of the mold body due to violent collision. When the movable mold and the fixed mold are closed, the movable mold will be close to the top surface of the fixed mold under the action of the driving part. At this time, the movable mold will move vertically downward on the outer wall of the limiting column. When the pressing sleeve enters the limiting hole, the rubber ring will contact the inner wall of the limiting hole. As a result, under the continuous movement of the movable mold, the pressing sleeve will retract under the action of the spring until the top surface of the fixed mold contacts the bottom surface of the movable mold to complete the closing. At the same time, the damper effectively absorbs and dissipates the energy generated by the pressure generated when the plastic melt is injected and the impact force when the movable mold is closed, thereby reducing the vibration of the mold body. Like a shock absorber, the damper converts vibration energy into other forms of energy such as heat energy through its own damping characteristics, thereby reducing the vibration amplitude of the mold body.

[0015] Second, the clamping connection between the limit frame and the limit groove can ensure that the movable mold and the fixed mold are accurately aligned during mold closing. In injection molding production, the precise matching of the mold body cavity is very important. This clamping structure can ensure that the relative positions of the movable mold and the fixed mold are consistent each time the mold is closed, avoiding damage to the mold body cavity due to inaccurate mold closing position, which affects the quality of plastic products, and can also reduce friction and noise caused by misalignment. Through the coordination of the limit frame and the sliding groove, during the opening and closing movement of the movable mold, the movable mold can be guided to accurately open and close the mold in the predetermined direction, preventing the movable mold from shifting during movement and causing misalignment of the mold body cavity, thereby improving the quality of the injection molded product;

[0016] Third, the fixed shell can reinforce and protect the mold structure around the injection hole, preventing deformation or damage caused by long-term erosion and pressure of the plastic melt. The sound insulation pad can effectively prevent the noise generated by the flow of plastic and the movement of components inside the mold body from being transmitted outward. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0018] Figure 2 It is an explosion diagram of the utility model;

[0019] Figure 3 for Figure 2 A in the middle is an enlarged schematic diagram;

[0020] Figure 4 for Figure 2 Enlarged schematic diagram of point B in the middle.

[0021] In the figure: 1. Fixed mold; 2. Load-bearing plate; 3. Moving mold; 4. Receiving groove; 5. Limiting column; 6. Spring; 7. Pressing sleeve; 8. Rubber ring; 9. Limiting hole; 10. Mounting groove; 11. Damper; 12. Limiting frame; 13. Limiting groove; 14. Mounting bracket; 15. Mounting hole; 16. Cylinder; 17. Limiting bracket; 18. Sliding groove; 19. Injection hole; 20. Fixed shell; 21. Rubber pad; 22. Sound insulation pad. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] like Figure 1-Figure 4 As shown, an injection mold with a shock-absorbing function includes a fixed mold 1, which is arranged above a load-bearing plate 2, and a movable mold 3 is arranged above the fixed mold 1. Receiving grooves 4 are provided at the four corners of the top surface of the fixed mold 1, and a limiting column 5 is fixed to the inner bottom surface of the receiving groove 4. A spring 6 is wound around the outer wall of the limiting column 5, one end of the spring 6 is fixed to the inner bottom surface of the receiving groove 4, and a pressing sleeve 7 is slidably provided on the inner wall of the receiving groove 4, and the other end of the spring 6 is fixed to the bottom end of the pressing sleeve 7. A rubber ring 8 is fixed to the outer wall of the pressing sleeve 7, and a limiting hole 9 is provided at the four corners of the top surface of the movable mold 3. The limiting column 5 is slidably connected to the limiting hole 9, and the pressing sleeve 7 is slidably provided with the limiting hole 9. A plurality of mounting grooves 10 are provided on the top surface of the load-bearing plate 2, and a damper 11 is fixed to the inner wall of the mounting groove 10, and the output end of the damper 11 is fixed to the bottom surface of the fixed mold 1.

[0024] During use, by cooperating with the pressing sleeve 7, the spring 6 and the rubber ring 8, the impact force generated when the fixed mold 1 and the movable mold 3 are closed can be absorbed. The spring 6 and the rubber ring 8 can effectively convert the impact energy into elastic potential energy to avoid damage to the surface of the mold body due to severe collision. When the movable mold 3 and the fixed mold 1 are closed, the movable mold 3 will be close to the top surface of the fixed mold 1 under the action of the driving member. At this time, the movable mold 3 will move vertically downward on the outer wall of the limiting column 5. When the pressing sleeve 7 enters the limiting hole 9, the rubber ring 8 It will contact the inner wall of the limiting hole 9, so that under the continuous movement of the movable mold 3, the pressing sleeve 7 will retract under the action of the spring 6 until the top surface of the fixed mold 1 contacts the bottom surface of the movable mold 3 to complete the mold closing. At the same time, the damper 11 effectively absorbs and dissipates the energy generated by the pressure generated when the plastic melt is injected and the impact force of the movable mold 3 during molding, thereby reducing the vibration of the mold body. Like a shock absorber, the damper 11 converts vibration energy into other forms of energy such as heat energy through its own damping characteristics, thereby reducing the vibration amplitude of the mold body. The damper 11 reduces the vibration amplitude of the mold body and can effectively reduce the noise generated by the vibration of the mold body.

[0025] like Figure 1-Figure 4 As shown, a limit frame 12 is fixed on the bottom surface of the movable mold 3, a limit groove 13 is provided on the top surface of the fixed mold 1, the limit groove 13 is connected with the internal cavity of the fixed mold 1, the limit frame 12 and the limit groove 13 are clamped together, a mounting frame 14 is fixed on the top surface of the load-bearing plate 2, a mounting hole 15 is provided on the top surface of the mounting frame 14, a cylinder 16 is fixed on the inner wall of the mounting hole 15, and a limit frame 17 is fixed on the left and right sides of the movable mold 3, and two sliding grooves 18 are provided on the left and right sides of the inner wall of the mounting frame 14, and the limit frame 17 is slidably connected with the sliding groove 18.

[0026] During use, the clamping connection between the limit frame 12 and the limit groove 13 can ensure that the movable mold 3 and the fixed mold 1 are accurately aligned when the mold is closed. In injection molding production, accurate matching of the mold body cavity is very important. This clamping structure can ensure that the relative positions of the movable mold 3 and the fixed mold 1 are consistent each time the mold is closed, avoiding damage to the mold body cavity due to inaccurate mold closing position, affecting the quality of plastic products, and reducing friction and noise caused by misalignment. At the same time, in the closed mold state, the clamping connection between the limit frame 12 and the limit groove 13 makes the movable mold 3 and the fixed mold 1 more tightly connected, enhancing the integrity of the entire mold body structure, which helps to withstand the pressure of the plastic melt during the injection molding process, prevents tiny displacements between the mold body components, and thus reduces noise caused by relative movement between components. Through the cooperation between the limit frame 17 and the sliding groove 18, during the opening and closing movement of the movable mold 3, the movable mold 3 can be guided to accurately perform the opening and closing operations in a predetermined direction, preventing the movable mold 3 from deviating during the movement and causing the mold body cavity to be misaligned, thereby improving the quality of the injection molded product. At the same time, the cooperation between the limit frame 17 and the sliding groove 18 limits the movement range of the movable mold 3 in the left and right directions, ensuring that the movable mold 3 can only move within a specific range, thereby improving the stability of the mold body movement, helping to prevent the movable mold 3 from excessively shaking or deviating from the normal position during the opening and closing process, and reducing vibration and noise caused by the instability of the mold body.

[0027] like Figure 1-Figure 4 As shown, the top surface of the fixed mold 1 and the bottom surface of the movable mold 3 are both provided with injection holes 19, the left sides of the fixed mold 1 and the movable mold 3 are both fixed with fixed shells 20, the top surface of the fixed mold 1 is fixed with a number of rubber pads 21, the outer walls of the fixed mold 1 and the movable mold 3 are both fixed with a number of sound insulation pads 22, and the inner walls of the cavities of the fixed mold 1 and the movable mold 3 are both coated with a release agent coating.

[0028] During use, the fixed shell 20 reinforces and protects the mold structure around the injection hole 19, preventing deformation or damage to the injection hole 19 caused by long-term erosion and pressure from the plastic melt. Furthermore, the fixed shell 20 stabilizes the injection head, effectively preventing it from accidentally falling off, thereby ensuring more stable injection of the plastic melt into the injection hole 19. The elasticity of the rubber pad 21 absorbs the impact force generated when the movable mold 3 and the fixed mold 1 are closed, preventing damage to the mold body due to violent collisions and reducing vibration and noise caused by collisions. The sound insulation pad 22 effectively blocks the transmission of noise generated by the flow of plastic and the movement of components within the mold body. Furthermore, the sound insulation pad 22 has a certain degree of elasticity, effectively preventing damage to the mold body due to external forces, thereby improving the integrity of the mold body. The release agent coating facilitates demolding after the product is injected, preventing the product from sticking in the mold cavity, thereby saving considerable labor and time.

[0029] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An injection mold with a shock-absorbing function, comprising a fixed mold (1), wherein the fixed mold (1) is arranged above a load-bearing plate (2), and is characterized in that: A movable mold (3) is provided above the fixed mold (1), and a receiving groove (4) is provided at each of the four corners of the top surface of the fixed mold (1). A limiting column (5) is fixed to the inner bottom surface of the receiving groove (4), and a spring (6) is wound around the outer wall of the limiting column (5). One end of the spring (6) is fixed to the inner bottom surface of the receiving groove (4), and a pressing sleeve (7) is slidably provided on the inner wall of the receiving groove (4), and the other end of the spring (6) is fixed to the bottom end of the pressing sleeve (7). The outer wall of the pressing sleeve (7) is fixed with a rubber ring (8), the four corners of the top surface of the movable mold (3) are provided with limiting holes (9), the limiting columns (5) are slidably connected with the limiting holes (9), the pressing sleeve (7) and the limiting holes (9) are slidably arranged, the top surface of the bearing plate (2) is provided with a plurality of mounting grooves (10), the inner wall of the mounting groove (10) is fixed with a damper (11), and the output end of the damper (11) is fixed to the bottom surface of the fixed mold (1).

2. The injection mold with shock absorption function according to claim 1, characterized in that: A limiting frame (12) is fixed on the bottom surface of the movable mold (3), and a limiting groove (13) is provided on the top surface of the fixed mold (1). The limiting groove (13) is connected to the internal cavity of the fixed mold (1), and the limiting frame (12) and the limiting groove (13) are arranged in a snap-fit manner.

3. The injection mold with shock absorption function according to claim 1, characterized in that: A mounting frame (14) is fixed on the top surface of the load-bearing plate (2), a mounting hole (15) is provided on the top surface of the mounting frame (14), a cylinder (16) is fixed on the inner wall of the mounting hole (15), and a limiting frame (17) is fixed on both the left and right sides of the movable mold (3), two sliding grooves (18) are provided on both the left and right sides of the inner wall of the mounting frame (14), and the limiting frame (17) is slidably connected to the sliding groove (18).

4. The injection mold with shock absorption function according to claim 2, characterized in that: The top surface of the fixed mold (1) and the bottom surface of the movable mold (3) are both provided with injection holes (19), and the left sides of the fixed mold (1) and the movable mold (3) are both fixed with fixed shells (20).

5. The injection mold with shock absorption function according to claim 4, characterized in that: A plurality of rubber pads (21) are fixed on the top surface of the fixed mold (1).

6. The injection mold with shock absorption function according to claim 5, characterized in that: A plurality of sound insulation pads (22) are fixed to the outer walls of the fixed mold (1) and the movable mold (3).

7. The injection mold with shock absorption function according to claim 6, characterized in that: The inner walls of the cavities of the fixed mold (1) and the movable mold (3) are both coated with a release agent coating.

Images