High-precision plastic part injection mold clamping device

Abstract

The utility model relates to the technical field of injection mold clamping devices, and discloses a high-precision plastic part injection mold clamping device which comprises a bottom plate, a clamping assembly and an injection mold, the bottom plate is made of a magnet adsorbable material, a guide rail is arranged on the bottom plate, a connecting block is arranged on one side of the clamping assembly, and the clamping assembly is connected with the injection mold. The connecting block is connected with the lead screw in the guide rail, the lead screw is driven by a motor to rotate and drives the connecting block and the clamping assembly to move, the clamping assembly can clamp the edge of the injection mold, the bottom plates are arranged on the two sides of the injection mold respectively, the bottom plate on one side is driven by a hydraulic rod to move horizontally, and the bottom plate on the other side is fixed. And an electromagnet is arranged in the clamping assembly, and after the clamping assembly clamps the injection mold, the electromagnet in the clamping assembly starts to work and generates magnetic force, so that the electromagnet is attracted to the bottom plate, and the situation that the precision is reduced due to the fact that the clamping assembly deviates is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of injection mold clamping devices, in particular to a high-precision plastic part injection mold clamping device. Background Art

[0002] The clamping device of the injection mold plays a vital role in the injection molding production process. It is not just a simple fixing device, but also a key component to ensure product quality and production efficiency. As a complex mechanical system, the clamping device consists of multiple precision parts working together to form an efficient and stable operating platform. The base, as the foundation of the entire device, provides solid support; the clamping mechanism achieves precise clamping of the mold through a carefully designed mechanical structure; and the guide rail, like an artery, provides a precise path for the movement of the clamping claw. The clamping device of a modern injection mold is usually equipped with a cylinder or a hydraulic cylinder. These power The source provides a strong clamping force for the clamping jaws to ensure that the mold will not shift or loosen during the high-pressure and high-speed injection molding process. At the same time, the design of the guide rails also takes into account various environmental factors, such as temperature, humidity and vibration, to ensure that the clamping jaws can always move accurately along the predetermined path. In addition, in order to meet the automation and intelligent needs of modern injection molding production, the clamping device is also equipped with advanced sensors and control systems. These sensors can monitor the clamping state of the mold, the position and speed of the clamping jaws and other key parameters in real time, and the control system adjusts the working state of the clamping device in real time according to these parameters to ensure the smooth progress of the entire injection molding process.

[0003] Although the traditional hydraulic transmission clamping device is powerful, it has many defects in practical applications. Among them, the oil leakage problem is particularly prominent. Since the seals are prone to wear and aging, the oil in the hydraulic system is prone to leakage, which may not only cause environmental pollution, but also affect the normal operation of the equipment and even bring safety hazards. In addition, the response speed of the hydraulic transmission system is relatively slow. The compressibility and fluid friction of the oil limit the system's rapid response capability, making the clamping device perform poorly when rapid action is required, thereby affecting the efficiency of the injection molding process. More importantly, the clamping accuracy is difficult to guarantee. The temperature and pressure fluctuations of the hydraulic system will affect the stability and consistency of the clamping force, resulting in loose or excessive clamping of the mold, which not only affects the product quality, but may also cause damage to the mold or the clamping device itself. Therefore, when designing and selecting the clamping device, these defects must be fully considered and a more reliable transmission method must be sought. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a high-precision plastic injection mold clamping device, which has the advantages of fast response and high precision, and solves the problems of hydraulic transmission clamping leakage and precision.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of fast response and high precision, the utility model provides the following technical solutions: a high-precision plastic injection mold clamping device, comprising a base plate, a clamping assembly and an injection mold, the base plate is made of a magnet adsorbable material, and a guide rail is provided on the base plate, a connecting block is provided on one side of the clamping assembly, the connecting block is connected to the screw rod in the guide rail, the screw rod is driven to rotate by a motor, driving the connecting block and the clamping assembly to move, so that the clamping assembly can clamp the edge of the injection mold, one base plate is provided on each side of the injection mold, and the base plate on one side is driven by a hydraulic rod to translate, and the base plate on the other side is fixed, and an electromagnet is provided in the clamping assembly, which can adsorb the clamping assembly itself on the base plate.

[0008] The clamping assembly is provided with a clamping plate on a side away from the guide rail, and the clamping plate extends toward the clamped injection mold so that the clamping plate can buckle the protrusion at the edge of the injection mold.

[0009] Rubber blocks are provided on both sides of the connecting block, and a sliding plate is provided on the side of the rubber block away from the clamping assembly. The sliding plate is made of a magnet-absorbable material. When the electromagnet is working, the sliding plate will move toward the clamping assembly to squeeze the rubber block. After squeezing the rubber block, it can deform, so that the rubber block and the guide rail wall are squeezed against each other, increasing the friction, which helps to prevent the mold from shifting or loosening during the injection molding process, ensuring the precise alignment of the mold and the quality stability of the product. In addition, the rubber has the effects of vibration reduction and sound insulation, which can reduce the noise and vibration generated between the clamping assembly and the mold.

[0010] The guide rail and the lead screw are arranged at an angle, pointing to the center of the base plate. The inclined guide rail design allows the clamping assembly to be adjusted and moved within a larger range to accommodate molds of different sizes and shapes. This flexibility enables the clamping device to adapt to a variety of production needs, thereby improving the versatility and efficiency of the equipment.

[0011] The clamping assembly is provided with a rubber pad on a surface close to the injection mold.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a high-precision plastic injection mold clamping device, which has the following beneficial effects:

[0014] 1. The high-precision plastic injection mold clamping device drives the bottom plate to translate through a hydraulic device, so that the bottom plate fits with both sides of the injection mold. The motor in the bottom plate drives the screw in the guide rail to rotate. Through the rotation of the screw, the connecting block connected to it drives the clamping component to translate. When the clamping component clamps the injection mold, the electromagnet in the clamping component starts to work, generating magnetic force, so that it attracts itself to the bottom plate to avoid the displacement of the clamping component itself, resulting in a decrease in precision. The electromagnetic attraction has the characteristics of fast response and stable attraction, which can effectively prevent the mold from shifting or loosening during the injection process. Compared with the traditional hydraulic drive clamping, the screw drive system usually has Higher positioning accuracy and repeatability, because the structural characteristics of the screw drive mechanism itself enable it to achieve micron-level precise movement. Therefore, this clamping device can ensure the precise alignment of the mold during the injection molding process, thereby improving the dimensional accuracy and quality stability of the product. Since there are fewer transmission parts in the screw drive mechanism, there are no problems such as oil compressibility and fluid friction in hydraulic transmission, so the action is faster, which helps to shorten the injection molding cycle and improve production efficiency. The structure of the screw drive system is relatively simple and has fewer parts, so it is more convenient to maintain. Compared with traditional hydraulic drive, the screw drive system has a lower failure rate and relatively low maintenance costs.

[0015] 2. The high-precision plastic parts injection mold clamping device is provided with rubber blocks on both sides of the connecting block. The rubber block is provided with a sliding plate on the side away from the clamping assembly. The sliding plate is made of a magnet-absorbable material. When the electromagnet is working, the sliding plate will move toward the clamping assembly to squeeze the rubber block. After squeezing the rubber block, it can deform, so that the rubber block and the guide rail wall are squeezed against each other, increasing the friction. The rubber has good friction properties and can increase the friction between the clamping assembly and the mold, making the clamping more stable and reliable. This helps prevent the mold from shifting or loosening during the injection molding process, ensuring the precise alignment of the mold and the quality stability of the product. The rubber has vibration reduction and sound insulation effects, which can reduce the noise and vibration generated between the clamping assembly and the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the clamping of the utility model;

[0018] Figure 3 It is a cutaway schematic diagram of the clamping assembly of the utility model;

[0019] Figure 4 Detailed schematic diagram of the clamping assembly of the utility model.

[0020] In the figure: 1, base plate; 2, clamping assembly; 3, injection mold; 11, guide rail; 21, clamping plate; 22, electromagnet; 23, connecting block; 24, rubber block; 111, screw rod; 211, rubber pad; 241, sliding plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 4 A high-precision plastic injection mold clamping device includes a base plate 1, a clamping assembly 2 and an injection mold 3. The base plate 1 is made of a magnet adsorbable material, and a guide rail 11 is provided on the base plate 1. A connecting block 23 is provided on one side of the clamping assembly 2. The connecting block 23 is connected to a screw rod 111 in the guide rail 11. The screw rod 111 is driven to rotate by a motor to drive the connecting block 23 and the clamping assembly 2 to move, so that the clamping assembly 2 can clamp the edge of the injection mold 3. The base plate 1 is in the injection mold There is one on each side of the tool 3, and the bottom plate 1 on one side is driven by the hydraulic rod to translate, and the bottom plate 1 on the other side is fixed. An electromagnet 22 is provided in the clamping component 2. When the clamping component 2 clamps the injection mold 3, the electromagnet 22 in the clamping component 2 starts to work, generates magnetic force, and attracts itself to the bottom plate 1 to avoid the displacement of the clamping component 2 itself, resulting in a decrease in accuracy. The electromagnetic attraction has the characteristics of fast response and stable attraction, which can effectively prevent the mold from shifting or loosening during the injection molding process.

[0023] The clamping assembly 2 is provided with a clamping plate 21 on the side away from the guide rail 11, and the clamping plate 21 extends toward the clamped injection mold 3, so that the clamping plate 21 can buckle the protrusion at the edge of the injection mold 3, and facilitate the opening of the mold when the injection is completed and the mold is demoulded.

[0024] Rubber blocks 24 are provided on both sides of the connecting block 23. The rubber block 24 is provided with a sliding plate 241 on the side away from the clamping component 2. The sliding plate 241 is made of a magnet-absorbable material. When the electromagnet 22 is working, the sliding plate 241 will move toward the clamping component 2 to squeeze the rubber block 24. After squeezing the rubber block, it can deform, so that the rubber block 24 and the wall of the guide rail 11 are squeezed against each other, increasing the friction. Rubber has good friction properties, which can increase the friction between the clamping component and the mold, making the clamping more stable and reliable, which helps prevent the mold from shifting or loosening during the injection molding process, ensuring the precise alignment of the mold and the quality stability of the product. Rubber has vibration reduction and sound insulation effects, which can reduce the noise and vibration generated between the clamping component and the mold.

[0025] The guide rail 11 and the screw rod 111 are arranged to be inclined, and the direction points to the center of the base plate 1. The inclined guide rail 11 design allows the clamping assembly 2 to be adjusted and moved in a larger range, so as to adapt to molds of different sizes and shapes. This flexibility enables the clamping device to adapt to various production needs and improve the versatility and use efficiency of the equipment.

[0026] The clamping assembly 2 is provided with a rubber pad 211 on one side close to the injection mold 3. The rubber has the characteristics of softness and elasticity. When the clamping assembly contacts the injection mold, the rubber pad 211 can play a role of buffering and shock absorption, reducing the direct impact and wear of the clamping assembly on the mold surface, which helps to extend the service life of the mold and reduce the frequency of mold maintenance and replacement. The rubber pad has good friction properties and can increase the friction between the clamping assembly and the mold, making the clamping more stable and reliable.

[0027] Working principle: After the worker replaces the required injection mold 3, the hydraulic device drives the bottom plate 1 to translate, so that the bottom plate 1 fits with both sides of the injection mold 3, and the motor in the bottom plate 1 drives the screw 111 in the guide rail 11 to rotate. Through the rotation of the screw 111, the connecting block 23 connected thereto drives the clamping assembly 2 to translate. The screw drive system usually has high positioning accuracy and repeat positioning accuracy. This is because the structural characteristics of the screw transmission mechanism itself enable it to achieve micron-level precise movement. Therefore, this clamping device can ensure the precise alignment of the mold during the injection molding process, thereby improving the size of the product. Inch precision and quality stability. When the clamping component 2 clamps the injection mold 3, the electromagnet 22 in the clamping component 2 starts to work and generates magnetic force, so that it is attracted to the bottom plate 1 to avoid the displacement of the clamping component 2 itself, which leads to a decrease in precision. The electromagnetic attraction has the characteristics of fast response and stable attraction, which can effectively prevent the mold from shifting or loosening during the injection molding process. At the same time, when the electromagnet 22 generates magnetic force, it will attract the sliding plate 241 to move toward the clamping component 2, squeeze the rubber block 24 to deform, and increase the friction between the rubber block 24 and the inner wall of the guide rail 11, thereby avoiding the movement of the clamping component 2 and increasing the clamping force.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision plastic injection mold clamping device, comprising a base plate (1), a clamping assembly (2) and an injection mold (3), characterized in that: The base plate (1) is made of a magnet-adsorbable material, and a guide rail (11) is provided on the base plate (1). A connecting block (23) is provided on one side of the clamping assembly (2), and the connecting block (23) is connected to a screw rod (111) in the guide rail (11). The screw rod (111) is driven to rotate by a motor, driving the connecting block (23) and the clamping assembly (2) to move, so that the clamping assembly (2) can clamp the edge of the injection mold (3). The base plate (1) is provided on each side of the injection mold (3), and the base plate (1) on one side is driven by a hydraulic rod to translate, while the base plate (1) on the other side is fixed. The clamping assembly (2) is provided with an electromagnet (22) that can adsorb the clamping assembly (2) itself on the base plate (1).

2. A high-precision plastic injection mold clamping device according to claim 1, characterized in that: The clamping assembly (2) is provided with a clamping plate (21) on a side away from the guide rail (11), and the clamping plate (21) extends toward the clamped injection mold (3), so that the clamping plate (21) can buckle the protrusion at the edge of the injection mold (3).

3. The high-precision plastic injection mold clamping device according to claim 1, characterized in that: Rubber blocks (24) are provided on both sides of the connecting block (23); a sliding plate (241) is provided on the side of the rubber block (24) away from the clamping assembly (2); the sliding plate (241) is made of a material that can be absorbed by a magnet; when the electromagnet (22) is working, the sliding plate (241) moves toward the clamping assembly (2) to squeeze the rubber block (24).

4. The high-precision plastic injection mold clamping device according to claim 1, characterized in that: The guide rail (11) and the screw rod (111) are arranged in an inclined manner, and the direction points to the center of the bottom plate (1).

5. The high-precision plastic injection mold clamping device according to claim 1, characterized in that: The clamping assembly (2) is provided with a rubber pad (211) on a surface close to the injection mold (3).

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