A scratch-resistant injection molding production auxiliary demolding mechanism

Abstract

This utility model provides an auxiliary demolding mechanism for injection molding production with anti-scratch properties, relating to the field of injection molding demolding technology. It includes: a fixed frame with two guide rods installed on its inner top; guide plates slidably mounted on the guide rods; positioning tubes installed on the side ends of the traction plates; a conveying pipe installed inside the guide cavity through the side end of the positioning tube, penetrating the side of the guide plate; a sealing element installed on the side end of the conveying pipe, and a guide groove provided on the side of the conveying pipe; the sealing element installed inside the guide groove. Assisted demolding is achieved by airflow spraying through the guide groove. The airflow not only provides rapid cooling, increasing the hardness of the injection molded product, but also avoids direct compression of the injection molded product, improving the processing quality of the injection molded product. It solves the problem of scratches, indentations, and other damage to the product surface caused by directly applying external force to the injection molded product using clamps.

Description

Technical Field

[0001] This utility model relates to the field of injection molding demolding technology, and in particular to an injection molding production auxiliary demolding mechanism with anti-scratch properties. Background Technology

[0002] Injection molding production uses the combined action of injection molding machines and molds to transform thermoplastic or thermosetting plastics into products of a specific shape. After injection molding is completed, the injection molded products are demolded using an auxiliary demolding mechanism, which improves the processing efficiency of injection molded products.

[0003] In the existing technology, when demolding injection molded products, the product is usually directly gripped by a clamp to complete the demolding. However, the temperature of the injection molded product is relatively high and it is in the thermoplastic stage. The texture is relatively soft. Directly applying external force to the injection molded product with a clamp can easily cause scratches, indentations and other damage to the product surface, thus affecting the yield and quality of the injection molded product. Utility Model Content

[0004] This utility model relates to an anti-scratch auxiliary demolding mechanism for injection molding production, which solves the problem that demolding is usually accomplished by directly gripping the injection molded product with a clamp. However, the temperature of the injection molded product is high and it is in the thermoplastic stage, so the texture is relatively soft. Directly applying external force to the injection molded product with a clamp can easily cause scratches, indentations and other damage to the surface of the product, thus affecting the yield and quality of the injection molded product.

[0005] This utility model provides a scratch-resistant auxiliary demolding mechanism for injection molding production, specifically including: a fixed frame and an injection molding machine. The fixed frame has a U-shaped structure and is mounted on the injection molding machine. Two guide rods are installed on the top inner side of the fixed frame. The guide rods have cylindrical structures, and guide plates are slidably mounted on the guide rods. An injection die is mounted on one side of one guide plate, and an injection punch is mounted on the other side of the guide plate. The injection punch and the injection die are closed together. Four openings are provided inside both the injection die and the injection punch. A flow guide cavity; the side of the flow guide cavity is connected to a flow guide groove; the flow guide groove is located on one side of the closed surface of the injection mold cavity and the injection mold punch; drive cylinders are installed on both sides of the fixed frame, and traction plates are installed through the output end of the drive cylinders through the side of the fixed frame; the traction plates have a cross-shaped structure, and positioning tubes are installed on the side ends of the traction plates; the side ends of the positioning tubes penetrate through the side of the guide plate and are inserted into the interior of the flow guide cavity to install a conveying pipe; a sealing element is installed on the side end of the conveying pipe, and a guide groove is provided on the side of the conveying pipe; the sealing element is installed inside the flow guide groove.

[0006] Furthermore, the injection molding machine is equipped with an air pump assembly; the air pump assembly is located at the rear of the fixed frame, and a main flow pipe one and a main flow pipe two are installed on the output end of the air pump assembly, and control valves are installed on both the main flow pipe one and the main flow pipe two.

[0007] Furthermore, a diversion pipe is connected to the side end of the main flow pipe; multiple evenly distributed guide pipes are connected to the diversion pipe; a positioning plate is installed on the rear side of the fixed frame; and the side end of the guide pipe penetrates the inner side of the positioning plate.

[0008] Furthermore, a second branch pipe is connected to the second main flow pipe; multiple evenly distributed second guide pipes are connected to the second branch pipe; the side end of the second guide pipe is connected to the outer end of the positioning pipe.

[0009] Furthermore, a positioning groove is provided on the inner bottom of the fixed frame, a drive cylinder is installed on the rear side of the fixed frame, and a movable frame is installed on the output end of the drive cylinder; the movable frame is slidably installed inside the positioning groove; and telescopic rod assemblies are installed on both sides of the movable frame.

[0010] Furthermore, a movable push plate is installed on the side end of the telescopic rod assembly; the top of the side of the movable push plate is located at the bottom of the inner side of the guide plate; a spring is installed on the inner side of the movable push plate; and a flow guide is installed on the top of the spring.

[0011] Furthermore, a support plate is installed on the top of the flow guide, wherein multiple slots are formed on the support plate; a drive pump is installed on the front side of the movable frame, and a connecting pipe is installed on the input end of the drive pump; the side end of the connecting pipe is connected to the bottom of the flow guide.

[0012] This utility model provides an injection molding production auxiliary demolding mechanism with scratch-resistant properties, which has the following beneficial effects:

[0013] In use, this invention uses a drive cylinder to move the traction plate outward, allowing external airflow to enter the guide cavity and flow through the guide groove to the outside of the injection molded product. The airflow is then sprayed out through the guide groove to assist in demolding. The airflow not only provides rapid cooling and improves the hardness of the injection molded product, but also avoids direct compression of the injection molded product. Compared with traditional clamp demolding methods, this invention effectively prevents scratches on the surface of the injection molded product and improves the processing quality of the injection molded product.

[0014] In addition, the drive pump on the front of the movable frame precisely absorbs the airflow inside the guide shroud and the tray through the connecting pipe, forming a stable airflow adsorption force that firmly adsorbs the bottom of the injection molded product. This avoids product damage caused by direct contact or uneven force in traditional demolding methods, ensuring the stability of the demolding process, achieving efficient and fast demolding operation, effectively shortening the production cycle and improving production efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0016] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0017] In the attached diagram:

[0018] Figure 1 A schematic diagram of the overall structure of this utility model is shown;

[0019] Figure 2 A three-dimensional structural diagram of the fixed frame of this utility model is shown;

[0020] Figure 3 A cross-sectional view of the guide plate of this utility model is shown;

[0021] Figure 4 A cross-sectional view of the positioning tube of this utility model is shown;

[0022] Figure 5 A schematic diagram of the three-dimensional structure of the main tube of this utility model is shown;

[0023] Figure 6 A three-dimensional structural diagram of the movable push plate of this utility model is shown;

[0024] Figure 7 A three-dimensional structural diagram of the bottom of the tray of this utility model is shown.

[0025] List of reference numerals

[0026] 1. Fixed frame; 101. Guide rod; 102. Guide plate; 103. Injection die; 104. Injection punch; 105. Flow guide cavity; 106. Flow guide groove; 107. Traction plate; 108. Positioning tube; 109. Conveying tube; 1010. Seal; 1011. Guide groove;

[0027] 2. Air pump assembly; 201. Main flow pipe one; 202. Diverter pipe one; 203. Guide pipe one; 204. Positioning plate; 205. Main flow pipe two; 206. Diverter pipe two; 207. Guide pipe two;

[0028] 3. Positioning groove; 301. Movable frame; 302. Telescopic rod assembly; 303. Movable push plate; 304. Spring piece; 305. Flow guide; 306. Support plate; 307. Connecting pipe;

[0029] 4. Injection molding machine. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] Please refer to Figures 1 to 7 :

[0032] Example 1: This utility model proposes an anti-scratch injection molding auxiliary demolding mechanism, including: a fixed frame 1 and an injection molding machine 4. The fixed frame 1 has a U-shaped structure and is mounted on the injection molding machine 4. Two guide rods 101 are installed on the top inner side of the fixed frame 1. The guide rods 101 have a cylindrical structure, and guide plates 102 are slidably mounted on the guide rods 101. An injection die 103 is mounted on the side of one guide plate 102, and an injection punch 104 is mounted on the side of the other guide plate 102. The injection punch 104 is closed with the injection die 103. Four flow guiding cavities 105 are opened inside both the injection die 103 and the injection punch 104. The inner cavity 105 is connected to a guide groove 106 on one side; the guide groove 106 is located on one side of the closed surface of the injection mold 103 and the injection mold 104; drive cylinders are installed on both sides of the fixed frame 1, and the output end of the drive cylinder is connected to a traction plate 107 through the side of the fixed frame 1; the traction plate 107 has a cross-shaped structure, and a positioning tube 108 is installed on each side end of the traction plate 107; the side end of the positioning tube 108 passes through the side of the guide plate 102 and is inserted into the inner cavity 105 to install a conveying pipe 109; a sealing element 1010 is installed on the side end of the conveying pipe 109, and a guide groove 1011 is provided on the side of the conveying pipe 109; the sealing element 1010 is installed inside the guide groove 106.

[0033] In this embodiment, the drive cylinders on both sides of the fixed frame 1 drive the guide plate 102 to move towards the center. The output end of the drive cylinder drives the traction plate 107 to push the conveying pipe 109 on the side of the positioning tube 108 to move inside the guide cavity 105, so that the sealing member 1010 on the side of the conveying pipe 109 is inserted into the guide groove 106, so that the injection mold 103 and the injection punch 104 are in a flat and integrated state. The injection molding machine 4 injects the molten material into the mold for injection molding processing to ensure the smoothness of the injection molded product surface. When demolding the injection molded product, the output ends of the drive cylinders on both sides of the fixed frame 1 drive the traction plate 107 in the opposite direction to move outward. The side end of the traction plate 107 drives the conveying pipe 109 on the side of the positioning tube 108 to move inside the guide cavity 105. The conveying pipe 109 drives the sealing member 1010 away from the guide. The airflow is channeled through the 106, and the external airflow flows through the inside of the positioning tube 108 into the delivery tube 109, then through the guide groove 1011 into the interior of the guide cavity 105. This allows the airflow to flow through the guide groove 106 to the outside of the injection molded product, performing demolding. As the traction plate 107 continues to move outward, the delivery tube 109 is locked in the inner end of the guide cavity 105, causing the guide plates 102 on the injection punch 104 and the injection die 103 to move along the guide rod 101, separating the injection punch 104 and the injection die 103. The airflow ejected from the guide groove 106 assists in demolding, and the airflow plays a role in rapid cooling, increasing the hardness of the injection molded product. The airflow will not directly compress the injection molded product. Compared with the method of demolding by clamps, this will not cause scratches on the surface of the injection molded product, thereby improving the processing quality of the injection molded product.

[0034] In Example 2, based on Example 1, an air pump assembly 2 is installed on the injection molding machine 4. The air pump assembly 2 is located behind the fixed frame 1, and a main flow pipe 1 201 and a main flow pipe 205 are installed on the output end of the air pump assembly 2. Both the main flow pipe 1 201 and the main flow pipe 205 are equipped with control valves. A branch pipe 1 202 is connected to the side end of the main flow pipe 1 201. Multiple evenly distributed guide pipes 1 203 are connected to the branch pipe 1 202. A positioning plate 204 is installed on the rear side of the fixed frame 1. The side end of the guide pipe 1 203 penetrates the inner side of the positioning plate 204. A branch pipe 2 206 is connected to the main flow pipe 2 205. Multiple evenly distributed guide pipes 2 207 are connected to the branch pipe 2 206. The side end of the guide pipe 2 207 is connected to the outer end of the positioning pipe 108, which controls the injection process. When the plastic product is demolded, the airflow generated by the air pump assembly 2 on the injection molding machine 4 flows through the main flow pipe 1 201 and the main flow pipe 2 205. Initially, the control valve on the main flow pipe 1 201 is closed, so that the airflow is diverted through the main flow pipe 2 205 to the interior of the diversion pipe 2 206 and then injected into the interior of the positioning pipe 108 through the guide pipe 2 207, providing airflow for the initial demolding of the injection molded product. When the injection punch 104 and the injection die 103 are separated, the control valve on the main flow pipe 1 201 is opened, so that the airflow flows through the main flow pipe 1 201 to the diversion pipe 1 202 and then flows out through the guide pipe 1 203. The positioning plate 204 positions the multiple guide pipes 1 203. The airflow ejected from the guide pipes 1 203 blows towards the periphery of the injection molded product, improving the demolding efficiency of the injection molded product.

[0035] In Example 3, based on Example 1, a positioning groove 3 is provided on the inner bottom of the fixed frame 1. A drive cylinder is installed on the rear side of the fixed frame 1, and a movable frame 301 is installed on the output end of the drive cylinder. The movable frame 301 is slidably installed inside the positioning groove 3. Telescopic rod assemblies 302 are installed on both sides of the movable frame 301. A movable push plate 303 is installed on the side end of the telescopic rod assembly 302. The top side of the movable push plate 303 is located at the inner bottom of the guide plate 102. A spring piece 304 is installed on the inner side of the movable push plate 303. A flow guide shroud 305 is installed on the top of the spring piece 304. A support plate 306 is installed on the top of the flow guide shroud 305, wherein multiple slots are provided on the support plate 306. A drive pump is installed on the front side of the movable frame 301, and a connecting pipe 307 is installed on the input end of the drive pump. The side end of the connecting pipe 307 is connected to... The bottom of the flow guide 305 is connected. When demolding the injection molded product, the drive pump on the front side of the movable frame 301 works, causing the drive pump to absorb the airflow inside the flow guide 305 and the support plate 306 through the connecting pipe 307. Under the action of the spring sheet 304, the support plate 306 is at the bottom of the injection molded product, so that the airflow is adsorbed at the bottom of the injection molded product. When the guide plate 102 moves to both sides, the guide plate 102 loses the pushing force on the movable push plate 303, causing the spring sheet 304 to push the movable push plate 303 to both sides, causing the telescopic rod assembly 302 on the side of the movable push plate 303 to stretch and move. The drive cylinder on the rear side of the fixed frame 1 drives the movable frame 301 to move, causing the movable frame 301 to drive the support plate 306 above to move, thereby causing the injection molded product to move out between the two molds, completing the demolding of the injection molded product.

[0036] The working principle of this embodiment: The airflow generated by the air pump assembly 2 on the injection molding machine 4 flows through the main flow pipe 1 201 and the main flow pipe 2 205. Initially, the control valve on the main flow pipe 1 201 is closed, and the airflow is diverted through the main flow pipe 2 205 to the diversion pipe 2 206, and then injected into the positioning pipe 108 through the guide pipe 2 207. The output ends of the drive cylinders on both sides of the fixed frame 1 drive the traction plates 107 in opposite directions to move outward. The traction plates 107 drive the conveying pipe 109 at the side end of the positioning pipe 108 to move within the guide cavity 105. The conveying pipe 109 drives the seal 1010 to leave the guide groove 106. The airflow flows through the positioning pipe 108 into the conveying pipe 109, through the guide groove 1011 into the guide cavity 105, and then through the guide groove 106 to the outside of the injection molded product for demolding. The traction plate 107 moves outward continuously, driving the guide plate 102 to move along the guide rod 101. The injection punch 104 and the injection die 103 separate. The control valve on the main flow pipe 201 opens, and the airflow flows through the main flow pipe 201 to the branch pipe 202 and then out through the guide pipe 203. The airflow ejected from the guide pipe 203 blows towards the periphery of the injection molded product. The drive pump on the front side of the movable frame 301 absorbs the airflow inside the guide cover 305 and the support plate 306 through the connecting pipe 307. Under the action of the spring piece 304, the support plate 306 is at the bottom of the injection molded product. The airflow is adsorbed at the bottom of the injection molded product. The drive cylinder on the rear side of the fixed frame 1 drives the movable frame 301 to move. The movable frame 301 drives the injection molded product on the support plate 306 above to move out between the two molds, completing the demolding of the injection molded product.

[0037] The following points should be noted in this article:

[0038] 1. The accompanying drawings of this utility model embodiment only involve the structures involved in this utility model embodiment; other structures can refer to general designs.

[0039] 2. Where there is no conflict, the embodiments of this utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0040] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A scratch-resistant injection molding production aid demolding mechanism comprising: A fixed frame (1) and an injection molding machine (4) are provided. The fixed frame (1) is mounted on the injection molding machine (4), and two guide rods (101) are installed on the top inner side of the fixed frame (1). The guide rods (101) are characterized by having guide plates (102) slidably mounted on them. An injection die (103) is mounted on one side of one guide plate (102), and an injection punch (104) is mounted on the other side of the guide plate (102), wherein the injection punch (104) and the injection die (103) are closed together. Both the injection die (103) and the injection punch (104) have four flow-guiding cavities (105) inside. The sides of the flow-guiding cavities (105) are connected to flow channels (106). The flow guide groove (106) is located on one side of the closed surface of the injection mold (103) and the injection punch (104); the fixed frame (1) is equipped with drive cylinders on both sides, and the output end of the drive cylinder is installed with a traction plate (107) through the side of the fixed frame (1); the traction plate (107) is equipped with a positioning tube (108) on each side; the positioning tube (108) is inserted into the inner cavity (105) of the flow guide (109) through the side of the guide plate (102) and is installed with a conveying tube (109); the conveying tube (109) is equipped with a sealing element (1010) on the side, and the side of the conveying tube (109) is provided with a guide groove (1011); the sealing element (1010) is installed inside the flow guide groove (106).

2. A scratch-resistant injection molding production auxiliary demolding mechanism according to claim 1, characterized in that, The injection molding machine (4) is equipped with an air pump assembly (2); the air pump assembly (2) is located on the rear side of the fixed frame (1), and the output end of the air pump assembly (2) is equipped with a main flow pipe one (201) and a main flow pipe two (205), and both the main flow pipe one (201) and the main flow pipe two (205) are equipped with control valves.

3. A scratch-resistant injection molding production auxiliary demolding mechanism according to claim 2, characterized in that, The side end of the main flow pipe (201) is connected to a branch pipe (202); the branch pipe (202) is connected to a number of evenly distributed guide pipes (203); a positioning plate (204) is installed on the rear side of the fixed frame (1); the side end of the guide pipe (203) penetrates the inner side of the positioning plate (204).

4. The anti-scratch injection molding auxiliary demolding mechanism according to claim 3, characterized in that, The main flow pipe 2 (205) is connected to the branch pipe 2 (206); the branch pipe 2 (206) is connected to multiple evenly distributed guide pipes 2 (207); the side end of the guide pipe 2 (207) is connected to the outer end of the positioning pipe (108).

5. A scratch-resistant injection molding auxiliary demolding mechanism according to claim 4, characterized in that, The fixed frame (1) has a positioning groove (3) at its inner bottom. A drive cylinder is installed on the rear side of the fixed frame (1), and a movable frame (301) is installed on the output end of the drive cylinder. The movable frame (301) is slidably installed inside the positioning groove (3). Telescopic rod assemblies (302) are installed on both sides of the movable frame (301).

6. The anti-scratch injection molding auxiliary demolding mechanism according to claim 5, characterized in that, The telescopic rod assembly (302) has a movable push plate (303) installed on its side end; the top of the side of the movable push plate (303) is located at the bottom of the inner side of the guide plate (102); a spring piece (304) is installed on the inner side of the movable push plate (303); and a flow guide (305) is installed on the top of the spring piece (304).

7. The anti-scratch injection molding auxiliary demolding mechanism according to claim 6, characterized in that, The top of the flow guide (305) is equipped with a support plate (306), wherein the support plate (306) has multiple slots; a drive pump is installed on the front side of the movable frame (301), and a connecting pipe (307) is installed on the input end of the drive pump; the side end of the connecting pipe (307) is connected to the bottom of the flow guide (305).

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