Ejection mechanism for injection mold

Abstract

The utility model discloses a jacking mechanism for injection mold, including roof, bottom plate, upper top block, lower top block and drive assembly, and upper top block has first inclined plane and second inclined plane and the first pressure surface of connecting first inclined plane and second inclined plane, and lower top block has the third inclined plane and fourth inclined plane of cooperation with first inclined plane, second inclined plane respectively and the second pressure surface of connecting third inclined plane and fourth inclined plane, when first pressure surface is connected with second pressure surface, first pressure surface can be locked with second pressure surface, and drive assembly drives upper top block sliding, makes first inclined plane, second inclined plane respectively with third inclined plane, fourth inclined plane do relative sliding, realize height difference and drive roof to do ascending or descending movement. The simple structure of the present application, through the height difference principle of the slope of upper and lower top block amplification ejection height, can reduce the number of hydraulic cylinder and reduce energy consumption. Moreover, first pressure surface and second pressure can form the lock, and this is helpful to keep the stability of mechanism in the ejection process, avoids the back.

Description

Technical Field

[0001] This utility model relates to a lifting mechanism, specifically a lifting mechanism for injection molds. Background Technology

[0002] In industrial production, molds are various shapes and tools used to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, and stamping. In short, a mold is a tool used to create shaped objects; this tool is composed of various parts, and different molds are composed of different parts. It primarily achieves the shaping of objects by changing the physical state of the material being molded. It is often referred to as the "mother of industry."

[0003] Injection molds with deep cavities have demolding mechanisms that integrate multiple hydraulic cylinders working in coordination, resulting in high energy consumption and poor stability. This energy consumption and stability are affected by the ejection system design, material properties, and process parameters.

[0004] Therefore, it is necessary to propose further solutions to reduce the energy consumption of injection molds and ensure their stability. Utility Model Content

[0005] This utility model provides a lifting mechanism for injection molds to solve the above-mentioned technical problems.

[0006] The purpose of this utility model is achieved through the following technical solution: a lifting mechanism for injection molds, comprising a top plate, a bottom plate, an upper lifting block, a lower lifting block, and a driving assembly. The upper lifting block has a first inclined surface and a second inclined surface, as well as a first pressing surface connecting the first and second inclined surfaces. The lower lifting block has a third inclined surface and a fourth inclined surface that respectively cooperate with the first and second inclined surfaces, as well as a second pressing surface connecting the third and fourth inclined surfaces. When the first pressing surface is connected to the second pressing surface, the first pressing surface can lock with the second pressing surface. The power end of the driving assembly is fixedly connected to one side of the upper lifting block to drive the upper lifting block to slide, so that the first and second inclined surfaces slide relative to the third and fourth inclined surfaces, respectively, thereby realizing the upward or downward movement of the top plate by means of the height difference.

[0007] Preferably, a guide structure is provided between the top plate and the bottom plate; the guide structure includes guide posts and guide sleeves, the guide sleeves being respectively disposed at the four corners of the bottom plate; one end of the guide post is slidably connected to the guide sleeve, and the other end is fixedly connected to the top plate.

[0008] Preferably, the drive component is any one of a cylinder, an electric actuator, or a motor drive.

[0009] Preferably, two slide rails are symmetrically arranged at the bottom of the top plate, and sliding blocks corresponding to the slide rails are formed on both sides of the top of the upper block, and the sliding blocks are slidably connected to the slide rails.

[0010] Preferably, the inclination angles of the first inclined plane, the second inclined plane, the third inclined plane, and the fourth inclined plane are 30 degrees to 45 degrees.

[0011] The beneficial technical effects achieved by this utility model are as follows: This application has a simple structure and amplifies the ejection height by utilizing the height difference between the inclined surfaces of the upper and lower ejector blocks (i.e., the design converts inclined sliding into vertical ejection), making it suitable for deep-cavity or large-sized products. It can reduce the number of hydraulic cylinders and lower energy consumption. Moreover, the first pressing surface of the upper ejector block and the second pressing surface of the lower ejector block can form a locking mechanism when connected, which helps to maintain the stability of the mechanism during ejection and avoids accidental retraction. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the lifting mechanism for injection molds in this utility model; Figure 2 This is a schematic diagram showing the connection relationship between the upper and lower top blocks in this utility model. Detailed Implementation

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Please see Figure 1-2 As shown in the figure, the purpose of this utility model is achieved through the following technical solution: a lifting mechanism for injection molds, comprising a top plate 1, a bottom plate 2, an upper lifting block 31, a lower lifting block 32, and a driving assembly 23. The upper lifting block 31 has a first inclined surface 311 and a second inclined surface 312, as well as a first pressing surface 313 connecting the first inclined surface 311 and the second inclined surface 312; the lower lifting block 31 has a third inclined surface 321 and a fourth inclined surface 322 that respectively cooperate with the first inclined surface 311 and the second inclined surface 312, as well as a connecting surface 313. The second pressing surface 323 connects the third inclined surface 321 and the fourth inclined surface 322; when the first pressing surface 313 is connected to the second pressing surface 323, the first pressing surface 313 can lock with the second pressing surface 323; the power end of the drive assembly 23 is fixedly connected to one side of the upper top block 31 to drive the upper top block 31 to slide, so that the first inclined surface 311 and the second inclined surface 312 slide relative to the third inclined surface 321 and the fourth inclined surface 322 respectively, so as to drive the top plate 1 to move up or down by means of the height difference.

[0015] It should be noted that the top plate 1 of this application is equipped with a demolding mechanism. The lifting mechanism of this application can drive the demolding mechanism to rise and then push the formed product out of the mold cavity, ensuring the smooth demolding of the product. In addition, this application adopts a double-sloping surface design, which makes the top plate 1 uniformly stressed and ensures the stability of the demolding mechanism. At the same time, the lifting mechanism, through the double-sloping surface drive design, forms a pressing surface that prevents backflow and ensures the stability of the mold operation.

[0016] Preferably, a guide structure is provided between the top plate and the bottom plate 2; the guide structure includes guide posts 22 and guide sleeves 21, with the guide sleeves 21 respectively located at the four corners of the bottom plate 2; one end of the guide post 22 is slidably connected to the guide sleeve 21, and the other end is fixedly connected to the top plate 1. This further ensures the stability and accuracy of the top plate 1's upward movement.

[0017] Preferably, the drive component 23 is any one of a cylinder, an electric actuator, or a motor drive.

[0018] like Figure 2 As shown, two slide rails 11 are symmetrically arranged at the bottom of the top plate 1, and sliding blocks 314 corresponding to the slide rails 11 are formed on both sides of the top of the upper block 31. The sliding blocks 314 are slidably connected to the slide rails 11. This helps to ensure the stability of the upper block during the sliding process.

[0019] Preferably, the inclination angles of the first, second, third, and fourth inclined planes are 30 to 45 degrees.

[0020] In summary, this application features a simple structure that amplifies the ejection height by utilizing the height difference between the inclined surfaces of the upper ejector block 31 and the lower ejector block 32 (i.e., a design that converts inclined sliding into vertical ejection). This design is suitable for deep cavities or large-sized products, reducing the number of hydraulic cylinders and lowering energy consumption. Furthermore, the first pressing surface 313 of the upper ejector block 31 and the second pressing surface 323 of the lower ejector block 32 can form a locking mechanism when connected, which helps maintain the stability of the mechanism during ejection and prevents accidental retraction.

[0021] The above provides a detailed description of the lifting mechanism for injection molds provided in the embodiments of this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea and method of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

[0022] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lifting mechanism for injection molds, characterized in that, The device includes a top plate, a bottom plate, an upper top block, a lower top block, and a drive assembly. The upper top block has a first inclined surface and a second inclined surface, as well as a first pressing surface connecting the first and second inclined surfaces. The lower top block has a third inclined surface and a fourth inclined surface that respectively cooperate with the first and second inclined surfaces, as well as a second pressing surface connecting the third and fourth inclined surfaces. When the first pressing surface is connected to the second pressing surface, the first pressing surface can lock with the second pressing surface. The power end of the drive assembly is fixedly connected to one side of the upper top block to drive the upper top block to slide, so that the first and second inclined surfaces slide relative to the third and fourth inclined surfaces, respectively, thereby driving the top plate to move up or down by means of the height difference.

2. The lifting mechanism for injection molds according to claim 1, characterized in that, A guide structure is provided between the top plate and the bottom plate; the guide structure includes guide posts and guide sleeves, and the guide sleeves are respectively provided on the four corners of the bottom plate; one end of the guide post is slidably connected to the guide sleeve, and the other end is fixedly connected to the top plate.

3. The lifting mechanism for injection molds according to claim 2, characterized in that, The drive component is any one of a cylinder, an electric actuator, or a motor drive.

4. The lifting mechanism for injection molds according to claim 1, characterized in that, The bottom of the top plate is symmetrically provided with two slide rails, and the top two sides of the upper top block are formed with sliding blocks corresponding to the slide rails, and the sliding blocks are slidably connected to the slide rails.

5. The lifting mechanism for injection molds according to claim 1, characterized in that, The inclination angles of the first inclined plane, the second inclined plane, the third inclined plane, and the fourth inclined plane are 30 degrees to 45 degrees.

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