Self-lubricating plastic mold capable of reducing mold opening and closing friction

Abstract

The utility model provides a self-lubricating plastic mould capable of reducing mould opening and closing friction, and relates to the technical field of plastic moulds capable of reducing mould opening and closing friction, the self-lubricating plastic mould comprises an injection molding machine body and a lubricating assembly, the lubricating assembly is arranged in the injection molding machine body, and the lubricating assembly comprises a movable mould and a fixed mould, guide columns are fixedly connected to the positions, close to the four corners, of the outer surface of one side of the movable mold, and guide sleeves are arranged on the positions, close to the four corners, of the inner wall of the fixed mold. According to the device, the lubricating assembly is arranged, when the guide column moves in the guide sleeve, the guide column passes through the multiple balls and makes contact with the multiple balls so as to drive the multiple balls to rotate, and when the balls rotate, lubricating liquid located in the sliding block can be attached to the surfaces of the balls and then attached to the guide column from the surfaces of the balls; and through the lubricating liquid on the guide pillar, friction between the guide pillar and the guide sleeve is reduced.

Description

Technical Field

[0001] This utility model relates to the field of plastic mold technology for reducing friction during mold opening and closing, and more particularly to a self-lubricating plastic mold for reducing friction during mold opening and closing. Background Technology

[0002] Plastic molds are tools used in the plastic molding process to manufacture plastic products. Their basic function is to inject molten plastic material into the mold cavity, where it cools and solidifies to form the desired plastic part.

[0003] In the prior art, plastic molds are usually installed on injection molding machines. A plastic mold consists of two parts: a moving mold and a fixed mold. The moving mold is usually installed on the moving platen of the injection molding machine, and the fixed mold is usually installed on the fixed platen of the injection molding machine. When the moving platen moves the moving mold toward the fixed mold, the guide pins on the moving mold insert into the guide sleeves on the fixed mold, thereby guiding the moving mold toward the fixed mold. The contact movement between the guide pins and the guide sleeves generates a large friction force. The large friction force will cause wear on the surfaces of the guide pins and the guide sleeves, thereby reducing the precision of the plastic mold. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the prior art where the contact movement between the guide post and the guide sleeve generates large frictional forces, which leads to wear on the surfaces of the guide post and the guide sleeve, thereby reducing the precision of the plastic mold. The invention proposes a self-lubricating plastic mold that reduces friction during mold opening and closing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a self-lubricating plastic mold for reducing mold opening and closing friction, comprising an injection molding machine body and a lubrication component. The lubrication component is disposed inside the injection molding machine body and includes a movable mold and a fixed mold. Guide pillars are fixedly connected to one side of the outer surface of the movable mold near the four corners. Guide sleeves are provided on the inner wall of the fixed mold near the four corners. Grooves are formed on one side of the outer surface of the fixed mold near the four guide sleeves. Multiple fixed shafts are fixedly connected to the inner walls of the four grooves. Movable shafts are slidably connected to the inner walls of the multiple fixed shafts. The multiple movable shafts are arranged in groups of four, and a slider is fixedly connected to one end of each group of movable shafts.

[0006] Preferably, the outer surfaces of the four sliders slide against the inner walls of the four grooves respectively, and the inner walls of the four sliders are provided with a plurality of evenly arranged circular holes.

[0007] Preferably, the inner walls of the plurality of circular holes are rotatably connected to spheres, and the outer surfaces of the four sliders are fixedly connected to fixing blocks.

[0008] Preferably, the outer surfaces of the four fixing blocks are threaded with cover plates, and the inner walls of the four grooves are provided with multiple springs arranged evenly.

[0009] Preferably, one end of each of the plurality of springs is fixedly connected to the inner wall of the four grooves, and the other end of each of the plurality of springs is fixedly connected to the outer surface of the four sliders.

[0010] Preferably, the injection molding machine body has a plurality of evenly arranged hydraulic rods inside, one end of each hydraulic rod is provided with a movable plate, and the movable mold is disposed on one outer surface of the movable plate.

[0011] Preferably, a fixing plate is provided inside the injection molding machine body, and the fixing mold is disposed on one outer surface of the fixing plate.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, the device is equipped with a lubrication component. When the guide post moves inside the guide sleeve, the guide post passes between multiple balls and comes into contact with the multiple balls, thereby causing the multiple balls to rotate. When the balls rotate, the lubricant located in the slider will adhere to the surface of the balls and then adhere to the guide post from the surface of the balls. Through the lubricant on the guide post, the friction between the guide post and the guide sleeve is reduced.

[0014] 2. In this utility model, the device uses multiple springs to ensure that the slider is in the appropriate position. When the moving mold and the fixed mold are in contact, the moving mold will move the slider into the groove to squeeze the spring. When the moving mold and the fixed mold are no longer in contact, the spring force will drive the slider out of the groove, thereby ensuring the adaptability of the plastic mold that reduces the friction of opening and closing the mold through self-lubrication. Attached Figure Description

[0015] Figure 1 A front perspective view of a plastic mold for reducing friction during mold opening and closing, as proposed in this utility model;

[0016] Figure 2 A front perspective view of the injection molding machine body for providing a self-lubricating plastic mold that reduces friction during mold opening and closing, as proposed in this utility model;

[0017] Figure 3 A perspective view of a moving mold for a self-lubricating plastic mold that reduces friction during mold opening and closing, as proposed in this utility model.

[0018] Figure 4 A frontal perspective view of the groove of a plastic mold for self-lubrication and reducing friction during mold opening and closing, as proposed in this utility model;

[0019] Figure 5A front perspective view of a fixed mold for a self-lubricating plastic mold that reduces friction during mold opening and closing, as proposed in this utility model;

[0020] Figure 6 A frontal perspective view of the circular hole of a plastic mold for self-lubricating and reducing friction during mold opening and closing is provided for this utility model.

[0021] Figure 7 A front perspective perspective view of a spring for a self-lubricating plastic mold that reduces friction during mold opening and closing, as proposed in this utility model;

[0022] Figure 8 A front perspective view of a slider for a self-lubricating plastic mold that reduces friction during mold opening and closing, as proposed in this utility model;

[0023] Figure 9 for Figure 8 Enlarged 3D view at point A.

[0024] Legend: 1. Injection molding machine body; 2. Lubrication components; 201. Moving mold; 202. Guide pillar; 203. Fixed mold; 204. Guide sleeve; 205. Groove; 206. Fixed shaft; 207. Moving shaft; 208. Slider; 209. Round hole; 210. Ball; 3. Fixed block; 4. Cover plate; 5. Spring; 6. Hydraulic rod; 7. Moving plate; 8. Fixed plate. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0027] Example 1: As Figures 1-9As shown, this utility model provides a self-lubricating plastic mold that reduces friction during mold opening and closing. It includes an injection molding machine body 1 and a lubrication assembly 2. The lubrication assembly 2 is disposed inside the injection molding machine body 1 and includes a movable mold 201 and a fixed mold 203. Guide pillars 202 are fixedly connected to one side of the outer surface of the movable mold 201 near four corners. Guide sleeves 204 are provided on the inner wall of the fixed mold 203 near four corners. Grooves 205 are formed on one side of the outer surface of the fixed mold 203 near the four guide sleeves 204. Multiple fixed shafts 206 are fixedly connected to the inner walls of the four grooves 205. Movable shafts 207 are slidably connected to the inner walls of the multiple fixed shafts 206. 07 are arranged in a group of four. Each group of four sliding shafts 207 has a slider 208 fixedly connected to one end. The outer surfaces of the four sliders 208 slide against the inner walls of the four grooves 205 respectively. The inner walls of the four sliders 208 are provided with multiple evenly arranged round holes 209. The inner walls of the multiple round holes 209 are rotatably connected to a ball 210. The outer surfaces of the four sliders 208 are fixedly connected to a fixing block 3. The injection molding machine body 1 is provided with multiple evenly arranged hydraulic rods 6. One end of the multiple hydraulic rods 6 is provided with a moving plate 7. The moving mold 201 is provided on one side of the outer surface of the moving plate 7. The injection molding machine body 1 is provided with a fixing plate 8. The fixing mold 203 is provided on one side of the outer surface of the fixing plate 8.

[0028] The overall effect of Embodiment 1 is as follows: When using a self-lubricating plastic mold that reduces mold opening and closing friction, the operator first fixes the movable mold 201 to one side of the outer surface of the movable plate 7, and then fixes the fixed mold 203 to one side of the outer surface of the fixed plate 8. After this is completed, the operator starts the injection molding machine body 1, which activates the hydraulic rod 6. The hydraulic rod 6 drives the movable plate 7 to move, which in turn drives the movable mold 201 towards the fixed mold 203. The movable mold 201 then drives the guide post 202 to move, which in turn moves into the slider 208. The guide post 202 slowly moves into the slider 208 and contacts the sphere 210. When the guide post 202 contacts the ball 210, the guide post 202 continues to move within the guide sleeve 204, causing the ball 210 to rotate. The ball 210 rotates along the inner wall of the circular hole 209. Simultaneously, as the ball 210 rotates, it carries out the lubricant located inside the slider 208. The lubricant on the ball 210 comes into contact with the guide post 202 as the ball rotates, adhering to the guide post 202. After the guide post 202 contacts the ball 210 during its movement, lubricant adheres to the outer surface of the guide post 202. Then, the guide post 202 continues to move within the guide sleeve 204. As the lubricated outer surface of the guide post 202 moves into the guide sleeve 204, the friction between the guide post 202 and the guide sleeve 204 is reduced. As the moving plate 7 continues to move the moving mold 201, the guide post 202 continues to move within the guide sleeve 204. When the moving mold 201 is close to the fixed mold 203, it contacts the slider 208. As the moving mold 201 continues to move, it drives the slider 208 to slide along the inside of the groove 205. The slider 208 compresses the spring 5 and simultaneously drives the moving shaft 207 to slide along the inside of the fixed shaft 206 until the slider 208 is completely in contact with the groove 205. At this point, the moving mold 201 and the fixed shaft 206... With the mold 203 in place, molding can continue. This device uses lubricant inside the slider 208. When the guide post 202 moves within the guide sleeve 204, the outer surface of the guide post 202 first contacts the ball 210, causing the ball 210 to rotate. The lubricant adhering to the ball 210 then adheres to the guide post 202. The guide post 202 then contacts the guide sleeve 204. The use of lubricant reduces the friction between the guide post 202 and the guide sleeve 204, solving the problem that the contact movement between the guide post 202 and the guide sleeve 204 generates large frictional forces, which can cause wear on the surfaces of the guide post 202 and the guide sleeve 204, thus reducing the precision of the plastic mold.

[0029] Example 2: As Figures 1-9As shown, the outer surfaces of the four fixing blocks 3 are all threadedly connected to the cover plate 4, and the inner walls of the four grooves 205 are provided with multiple springs 5 ​​evenly arranged. One end of each spring 5 is fixedly connected to the inner wall of the four grooves 205, and the other end of each spring 5 is fixedly connected to the outer surface of the four sliders 208.

[0030] The overall effect of Embodiment 2 is that, when a self-lubricating plastic mold that reduces mold opening and closing friction is used, as the moving mold 201 moves toward the fixed mold 203, the outer surface of the moving mold 201 will slowly come into contact with the slider 208. After the moving mold 201 and slider 208 come into contact, as the moving mold 201 continues to move, the moving mold 201 will drive the slider 208 to slide along the inside of the groove 205. Simultaneously, the slider 208 will compress the spring 5, and the slider 208 will drive the moving shaft 207 to slide along the inside of the fixed shaft 206 until the slider 208 is completely in contact with the inside of the groove 205. After injection molding is completed, the moving mold 201 will move away from the fixed mold 203. The squeezing force of the movable mold 201 on the slider 208 will gradually decrease. The elastic force of the spring 5 will drive the slider 208 to slide along the inside of the groove 205. At the same time, the slider 208 will drive the movable shaft 207 to slide along the inside of the fixed shaft 206. The slider 208 will slowly slide out of the groove 205. Through the setting of the spring 5, when the movable mold 201 and the fixed mold 203 are in contact, the movable mold 201 will move the slider 208 into the groove 205 to squeeze the spring 5. When the movable mold 201 and the fixed mold 203 are no longer in contact, the elastic force of the spring 5 will drive the slider 208 to move out of the groove 205, thereby ensuring the adaptability of the self-lubricating plastic mold that reduces the friction of opening and closing the mold.

[0031] Working Principle: When using a self-lubricating plastic mold that reduces friction during mold opening and closing, the operator starts the injection molding machine body 1. The hydraulic rod 6 moves the moving mold 201 towards the fixed mold 203. The moving mold 201 moves the guide pillar 202, which moves into the slider 208. The outer surface of the guide pillar 202 slowly contacts the sphere 210. As the guide pillar 202 moves and contacts the sphere 210, it causes the sphere 210 to rotate. The sphere 210 carries away the lubricant adhering to it from inside the slider 208. This lubricant, along with the rotation of the sphere 210, comes into contact with the guide pillar 202, leaving its outer surface covered with lubricant. The guide pillar 202 then continues to move into the guide sleeve 204, reducing friction between the guide pillar 202 and the guide sleeve 204. The outer surface of the moving mold 201 gradually comes into contact with the slider 208. The moving mold 201 drives the slider 208 to slide along the inside of the groove 205. The slider 208 compresses the spring 5 until it is completely in contact with the inside of the groove 205 for injection molding. After injection molding is completed, the moving mold 201 moves away from the fixed mold 203. The compressive force of the moving mold 201 on the slider 208 gradually decreases. The elastic force of the spring 5 drives the slider 208 to slide along the inside of the groove 205. This device is equipped with a lubrication component 2. When the guide post 202 moves in the guide sleeve 204, the guide post 202 passes between multiple balls 210 and comes into contact with the multiple balls 210, thereby causing the multiple balls 210 to rotate. When the balls 210 rotate, the lubricant inside the slider 208 adheres to the surface of the balls 210 and then from the surface of the balls 210 to the guide post 202. The lubricant on the guide post 202 reduces the friction between the guide post 202 and the guide sleeve 204.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A self-lubricating plastic mold for reducing mold opening and closing friction, comprising an injection molding machine body (1) and a lubrication component (2), wherein the lubrication component (2) is disposed inside the injection molding machine body (1), characterized in that: The lubrication assembly (2) includes a movable mold (201) and a fixed mold (203). Guide posts (202) are fixedly connected to one side of the outer surface of the movable mold (201) near the four corners. Guide sleeves (204) are provided on the inner wall of the fixed mold (203) near the four corners. Grooves (205) are provided on one side of the outer surface of the fixed mold (203) near the four guide sleeves (204). Multiple fixed shafts (206) are fixedly connected to the inner walls of the four grooves (205). Movable shafts (207) are slidably connected to the inner walls of the multiple fixed shafts (206). The multiple movable shafts (207) are arranged in groups of four. A slider (208) is fixedly connected between one end of each group of movable shafts (207).

2. The plastic mold for reducing friction during mold opening and closing according to claim 1, characterized in that: The outer surfaces of the four sliders (208) slide against the inner walls of the four grooves (205), and the inner walls of the four sliders (208) are provided with a plurality of evenly arranged circular holes (209).

3. A self-lubricating plastic mold for reducing friction during mold opening and closing, as described in claim 2, characterized in that: The inner walls of the multiple circular holes (209) are rotatably connected to spheres (210), and the outer surfaces of the four sliders (208) are fixedly connected to the fixing blocks (3).

4. A self-lubricating plastic mold for reducing friction during mold opening and closing, as described in claim 3, characterized in that: The outer surfaces of the four fixing blocks (3) are all threaded with cover plates (4), and the inner walls of the four grooves (205) are provided with multiple springs (5) arranged evenly.

5. A self-lubricating plastic mold for reducing friction during mold opening and closing, as described in claim 4, characterized in that: One end of each of the multiple springs (5) is fixedly connected to the inner wall of the four grooves (205), and the other end of each of the multiple springs (5) is fixedly connected to the outer surface of the four sliders (208).

6. A self-lubricating plastic mold for reducing friction during mold opening and closing, as described in claim 5, characterized in that: The injection molding machine body (1) is provided with a plurality of evenly arranged hydraulic rods (6), and a moving plate (7) is provided at one end of the plurality of hydraulic rods (6). The moving mold (201) is provided on one side of the outer surface of the moving plate (7).

7. A self-lubricating plastic mold for reducing friction during mold opening and closing, as described in claim 6, characterized in that: The injection molding machine body (1) is provided with a fixing plate (8) inside, and the fixing mold (203) is provided on one side of the outer surface of the fixing plate (8).

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