An injection molding machine with automatic mold stripping

Abstract

The application relates to the technical field of injection mold demolding, in particular to an automatic demolding injection molding machine. The automatic demolding injection molding machine comprises a rack and an open-close mold structure, the open-close mold structure comprises a fixed mold plate, a movable mold plate and a mold locking element, the fixed mold plate is fixedly arranged on the rack, the movable mold plate is connected to the fixed mold plate through the mold locking element and can be opened and closed, one side of the fixed mold plate opposite to the movable mold plate is formed with a mold cavity, the automatic demolding injection molding machine further comprises an ejection structure, a material pushing structure and a material receiving box, the ejection structure is used for ejecting an injection molding product out of the mold cavity, and the material pushing structure is used for pushing the injection molding product into the material receiving box. The application has the following effects: the automatic flow of the injection molding product from the mold cavity to the material receiving box is realized, manual intervention in the demolding and transfer processes is not needed, the labor intensity of workers is reduced, the continuity and efficiency of injection molding production are improved, the probability of quality problems such as product scratching and deformation caused by manual operation is reduced, and the quality of the injection molding product is improved.

Description

Technical Field

[0001] This application relates to the technical field of injection molding demolding, and in particular to an injection molding machine with automatic demolding. Background Technology

[0002] In the field of injection molding, the development of injection molding machines has played a crucial role in the production of plastic products, especially the research and development of new SPE pillars. Injection molding machines can achieve efficient and precise molding of plastic products, meeting the requirements for product quality and performance.

[0003] In traditional injection molding machine operation, demolding and collection of injection molded products are usually done manually. After the injection molded product is formed, simple mechanical auxiliary devices are used for demolding. Tools are needed to remove the product from the mold cavity and then place it in a designated collection location. This method requires workers to constantly monitor the working status of the injection molding machine and operate at the right time. It is easily affected by the worker's skill level and working condition, resulting in unstable product demolding quality and low production efficiency. Utility Model Content

[0004] In order to reduce the labor intensity of workers while improving production efficiency and product quality, this application provides an injection molding machine with automatic demolding.

[0005] This application provides an automatic demolding injection molding machine, which adopts the following technical solution: it includes a frame and a mold opening and closing structure. The mold opening and closing structure includes a fixed mold plate, a moving mold plate, and a locking component. The fixed mold plate is fixedly installed on the frame. The moving mold plate is connected to the fixed mold plate through the locking component and can be opened and closed. A mold cavity is formed on the side of the fixed mold plate opposite to the moving mold plate. It also includes an ejection structure, a pusher structure, and a receiving box. The ejection structure is used to eject the injection molded product from the mold cavity, and the pusher structure is used to push the injection molded product into the receiving box.

[0006] By adopting the above technical solution, the coordinated setting of the ejection structure and the pusher structure enables the automated flow of injection molded products from the mold cavity to the receiving box, eliminating the need for manual intervention in the demolding and transfer process. This reduces the labor intensity of workers, improves the continuity and efficiency of injection molding production, and at the same time reduces the probability of quality problems such as product scratches and deformation caused by manual operation, thereby improving the quality of injection molded products.

[0007] Preferably, the ejection structure includes an ejection cylinder and an ejection plate. The ejection cylinder is fixed to the side of the moving template away from the fixed template. One end face of the ejection plate is connected to the piston rod of the ejection cylinder, and the other end face of the ejection plate passes through the moving template and extends into the mold cavity.

[0008] By adopting the above technical solution, the ejection assembly adopts the structure of ejection cylinder driving ejection plate, which ensures that the product is smoothly released from the mold cavity, avoids product breakage or mold cavity damage caused by excessive local force, and improves the reliability of demolding action and product molding quality.

[0009] Preferably, the ejector structure includes an ejector bracket, an ejector cylinder, and an ejector plate. The ejector bracket is mounted on the frame and located on one side of the mold opening and closing structure. The ejector cylinder is mounted on the ejector bracket. The piston rod of the ejector cylinder is connected to the ejector plate. The ejector plate is used to apply force to the injection molded product ejected from the mold cavity by the ejector structure.

[0010] By adopting the above technical solution, the ejector plate applies a pushing force to the ejected injection molded product, which can quickly push the product from the mold opening and closing structure area to the receiving box direction, avoiding the product from staying around the mold cavity after ejection and affecting the next injection cycle, further ensuring the continuity of the production process. At the same time, the force application method of the ejector plate is gentle and is not likely to cause damage to the product surface.

[0011] Preferably, the receiving box is located on the side of the opening and closing mold structure away from the pushing structure. A feeding slide rail is provided between the receiving box and the opening and closing mold structure. The feeding slide rail is inclined. The end of the feeding slide rail near the opening and closing mold structure is higher than the end of the feeding slide rail near the receiving box. An openable and closable inlet door is provided on the side wall of the receiving box near the feeding slide rail.

[0012] By adopting the above technical solution, the feeding slide rail that is inclined between the receiving box and the opening and closing mold structure can realize automatic sliding and conveying by the weight of the product itself, reducing the pushing force requirement of the pushing structure and reducing energy consumption; the openable and closable inlet door can close the receiving box in the non-production state to prevent dust and other impurities from entering the box and contaminating the product.

[0013] Preferably, the pusher bracket is slidably connected to the frame in a vertical direction, and the pusher bracket and the frame are relatively fixed together by a positioning element.

[0014] By adopting the above technical solution, the positioning components can be used to fix the position at different heights, so that the pushing height of the pusher plate can be flexibly adjusted according to the size, thickness and other parameters of the injection molded product, and adapt to the pushing requirements of products of different specifications.

[0015] Preferably, the frame is provided with an adjusting rod, the length direction of which is vertical. The pusher bracket is slidably disposed on the adjusting rod. The adjusting rod has multiple positioning holes, which penetrate the adjusting rod radially. The multiple positioning holes are equally spaced on the adjusting rod in the vertical direction. The positioning element includes a positioning screw and a positioning nut. The positioning screw passes through the positioning hole and the pusher bracket, and the positioning nut is threaded onto the positioning screw.

[0016] By adopting the above technical solution, not only can the vertical height of the pusher bracket be precisely adjusted, but the positioning method is also simple and reliable, and the adjustment operation is convenient. It can quickly adapt the pusher height for different products during production, thereby improving the adjustment efficiency and positioning stability of the equipment.

[0017] Preferably, the receiving box is equipped with a cooling fan and a cooling grid frame. The cooling fan is located at the top of the cooling box, and the air outlet of the cooling fan faces the cooling grid frame. The height of the cooling grid frame is flush with the bottom of the feeding door.

[0018] By adopting the above technical solution, the injection molded product falls onto the heat dissipation grid frame through the feeding gate. The cooling fan blows airflow onto the heat dissipation grid frame, which enables the injection molded product entering the receiving box to dissipate heat quickly. The heat dissipation grid frame provides support for the product while ensuring airflow and improving the uniformity of heat dissipation.

[0019] Preferably, the frame is provided with a guide assembly, which includes a guide post and a guide sleeve. The guide post is fixed on the fixed template, and the guide sleeve is fixed on the moving template. The guide post and the guide sleeve are slidably engaged.

[0020] By adopting the above technical solution, precise guidance is provided for the opening and closing motion of the moving template, ensuring that the moving template and the fixed template are accurately aligned when the mold is closed, avoiding product molding defects caused by mold cavity misalignment, and reducing shaking and wear during the movement of the moving template.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. It enables automated transfer of injection molded products from the mold cavity to the receiving box, eliminating the need for manual intervention in the demolding and transfer processes. This reduces the labor intensity of workers, improves the continuity and efficiency of injection molding production, and reduces the probability of quality problems such as product scratches and deformation caused by manual operation, thereby improving the quality of injection molded products. 2. By using positioning components to fix the material at different heights, the pushing height of the ejector plate can be flexibly adjusted according to the size, thickness, and other parameters of the injection molded product, adapting to the pushing requirements of products with different specifications. Attached Figure Description Figure 1This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the overall structure of this application; Figure 3 yes Figure 1 A magnified view of part A in the middle; Figure 4 This is a cross-sectional schematic diagram of a portion of the structure of this application; Figure 5 This is a cross-sectional schematic diagram of a portion of the structure of this application.

[0022] Explanation of reference numerals in the attached drawings: 110, frame; 111, adjusting rod; 112, positioning hole; 113, positioning component; 114, positioning screw; 115, positioning nut; 120, mold opening and closing structure; 121, fixed mold plate; 122, moving mold plate; 123, mold locking component; 130, ejection structure; 131, ejection cylinder; 132, ejection plate; 133, ejector pin; 140, material pushing structure; 141, material pushing bracket; 142, material pushing cylinder; 143, material pushing plate; 150, receiving box; 151, material inlet gate; 152, cooling fan; 153, cooling grille frame; 160, guide assembly; 161, guide column; 162, guide sleeve; 170, feeding slide rail. Detailed Implementation

[0023] The present application will be further described in detail below with reference to the accompanying drawings.

[0024] This application discloses an injection molding machine with automatic demolding, which reduces the labor intensity of workers while improving production efficiency and product quality.

[0025] refer to Figures 1-5 This embodiment discloses an automatic demolding injection molding machine, including a frame 110, a mold opening and closing structure 120, an ejection structure 130, a material pushing structure 140, and a receiving box 150. The mold opening and closing structure 120 includes a fixed mold plate 121, a movable mold plate 122, and a locking component 123. The fixed mold plate 121 is fixedly mounted on the frame 110. The movable mold plate 122 is connected to the fixed mold plate 121 through the locking component 123. A mold cavity is formed on the side of the fixed mold plate 121 opposite to the movable mold plate 122. The locking component 123 is a hydraulic locking cylinder, with its two ends connected to the frame 110 and the movable mold plate 122 respectively, which can provide a stable locking force and ensure the sealing of the mold cavity during the injection molding process. The ejection structure 130 is used to eject the injection molded product from the mold cavity, and the material pushing structure 140 is used to push the injection molded product into the receiving box 150. Through the coordinated operation of the three, the automated operation of product demolding and collection is realized.

[0026] The ejection assembly includes an ejection cylinder 131 and an ejection plate 132. The ejection cylinder 131 is fixed to the side of the moving template 122 away from the fixed template 121 by bolts. One end face of the ejection plate 132 is fixedly connected to the piston rod of the ejection cylinder 131 by a flange. The other end face of the ejection plate 132 passes through the moving template 122 and extends into the mold cavity.

[0027] In addition, a guide assembly 160 is provided on the frame 110. The guide assembly 160 includes guide posts 161 and guide sleeves 162. The guide posts 161 are fixed on the fixed template 121, and there are four guide posts 161, which are located at the four corners of the fixed template 121. The guide sleeves 162 are fixed on the moving template 122 and correspond one-to-one with the guide posts 161. The guide posts 161 and the guide sleeves 162 slide together to ensure that the moving template 122 moves smoothly and is accurately aligned during the mold opening and closing process. In this embodiment, the surface of the guide posts 161 is coated with a wear-resistant coating, and the guide sleeves 162 are provided with grease grooves inside to improve the smoothness of sliding between the guide posts 161 and the guide sleeves 162 and extend their service life.

[0028] The ejector structure 140 includes an ejector bracket 141, an ejector cylinder 142, and an ejector plate 143. The ejector bracket 141 is mounted on the frame 110 and located on one side of the mold opening and closing structure 120. The ejector cylinder 142 is an electric push rod, which is fixed to the ejector bracket 141 by bolts. The piston rod of the ejector cylinder 142 and the ejector plate 143 are connected by threads. A rubber buffer pad is attached to one side of the ejector plate 143 to prevent scratching the surface of the injection molded product when force is applied to it by the ejector structure 130. The receiving box 150 is located on the side of the mold opening and closing structure 120 away from the ejector structure 140. A feeding slide rail 170 is provided between the receiving box 150 and the opening and closing mold structure 120. The feeding slide rail 170 is inclined at an angle of 15°-30°. The end of the feeding slide rail 170 near the opening and closing mold structure 120 is higher than the end of the feeding slide rail 170 near the receiving box 150. The surface of the slide rail is coated with a wear-resistant polytetrafluoroethylene coating to reduce the frictional resistance when the product slides. An openable and closable inlet door 151 is provided on the side wall of the receiving box 150 near the feeding slide rail 170. The inlet door 151 is opened and closed by sliding up and down driven by a hydraulic cylinder embedded in the wall of the receiving box 150.

[0029] Furthermore, the pusher bracket 141 is vertically slidably connected to the frame 110. Specifically, the frame 110 is provided with an adjusting rod 111, the length of which is vertical. The adjusting rod 111 has multiple positioning holes 112, which penetrate the adjusting rod 111 radially. The multiple positioning holes 112 are equally spaced vertically on the adjusting rod 111. The pusher bracket 141 has sliding holes that are compatible with the adjusting rod 111. The positioning component 113 includes a positioning screw 114 and a positioning nut 115. The positioning screw 114 passes through the positioning holes 112 and the sidewall of the sliding hole of the pusher bracket 141. The positioning nut 115 is threaded onto the positioning screw 114. By tightening the positioning nut 115, the pusher bracket 141 and the adjusting rod 111 are relatively fixed, thereby adjusting the vertical height of the pusher plate 143 to meet the pusher requirements of products with different thicknesses.

[0030] The receiving box 150 is equipped with a cooling fan 152 and a cooling grid frame 153. The cooling fan 152 is fixed to the top of the receiving box 150 by a bracket. The air outlet of the cooling fan 152 faces the cooling grid frame 153. The cooling grid frame 153 is welded together from multiple horizontal and vertical grid bars. Its height is flush with the bottom of the feeding door 151, so that the product sliding in from the feeding slide rail 170 can fall directly onto the cooling grid frame 153. The airflow blown out by the cooling fan 152 passes through the grid gaps and makes full contact with the product surface to achieve rapid heat dissipation and prevent the product from deforming due to residual heat.

[0031] The implementation principle of an automatic demolding injection molding machine according to an embodiment of this application is as follows: After injection molding is completed, the locking mold 123 is unlocked, the moving mold plate 122 moves away from the fixed mold plate 121 along the guide post 161, and the mold cavity is opened; then the ejector cylinder 131 is activated, driving the ejector plate 132 to move the ejector pin 133 towards the mold cavity, ejecting the product from the mold cavity; after the product is ejected, it falls to the starting end of the feeding slide rail 170, the pusher cylinder 142 is activated, pushing the pusher plate 143 to push the product along the feeding slide rail 170, and the product slides along the slide rail to the inlet gate 151 of the receiving box 150 under the action of gravity, and falls onto the heat dissipation grid frame 153 after the inlet gate 151 is pushed open; the heat dissipation fan 152 works continuously to dissipate heat from the product. The whole process does not require manual intervention in demolding, transfer and heat dissipation, realizing automated continuous production, reducing the labor intensity of workers, and improving production efficiency and product quality.

[0032] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An injection molding machine with automatic demolding, comprising a frame (110) and a mold opening and closing structure (120), wherein the mold opening and closing structure (120) comprises a fixed mold plate (121), a movable mold plate (122), and a locking component (123), wherein the fixed mold plate (121) is fixedly disposed on the frame (110), and the movable mold plate (122) is openably and closeably connected to the fixed mold plate (121) through the locking component (123), wherein a mold cavity is formed on the side of the fixed mold plate (121) opposite to the movable mold plate (122), characterized in that: It also includes an ejector structure (130), a pusher structure (140), and a receiving box (150), wherein the ejector structure (130) is used to eject the injection molded product out of the mold cavity, and the pusher structure (140) is used to push the injection molded product into the receiving box (150).

2. The injection molding machine with automatic demolding according to claim 1, characterized in that: The ejection structure (130) includes an ejection cylinder (131) and an ejection plate (132). The ejection cylinder (131) is fixed to the side of the moving template (122) away from the fixed template (121). One end face of the ejection plate (132) is connected to the piston rod of the ejection cylinder (131), and the other end face of the ejection plate (132) passes through the moving template (122) and extends into the mold cavity.

3. The injection molding machine with automatic demolding according to claim 2, characterized in that: The ejector structure (140) includes an ejector bracket (141), an ejector cylinder (142), and an ejector plate (143). The ejector bracket (141) is mounted on the frame (110) and located on one side of the mold opening and closing structure (120). The ejector cylinder (142) is mounted on the ejector bracket (141). The piston rod of the ejector cylinder (142) is connected to the ejector plate (143). The ejector plate (143) is used to apply force to the injection molded product that is ejected from the mold cavity by the ejector structure (130).

4. The injection molding machine with automatic demolding according to claim 1, characterized in that: The receiving box (150) is located on the side of the opening and closing mold structure (120) away from the pushing structure (140). A feeding slide rail (170) is provided between the receiving box (150) and the opening and closing mold structure (120). The feeding slide rail (170) is inclined. The end of the feeding slide rail (170) near the opening and closing mold structure (120) is higher than the end of the feeding slide rail (170) near the receiving box (150). An openable and closable inlet door (151) is provided on the side wall of the receiving box (150) near the feeding slide rail (170).

5. An injection molding machine with automatic demolding according to claim 3, characterized in that: The pusher bracket (141) is slidably connected to the frame (110) in a vertical direction, and the pusher bracket (141) and the frame (110) are fixed relative to each other by a positioning member (113).

6. The injection molding machine with automatic demolding according to claim 5, characterized in that: An adjusting rod (111) is provided on the frame (110). The length direction of the adjusting rod (111) is arranged in the vertical direction. The pusher bracket (141) is slidably arranged on the adjusting rod (111). A plurality of positioning holes (112) are opened on the adjusting rod (111). The positioning holes (112) penetrate the adjusting rod (111) radially. The plurality of positioning holes (112) are equally spaced on the adjusting rod (111) in the vertical direction. The positioning component (113) includes a positioning screw (114) and a positioning nut (115). The positioning screw (114) passes through the positioning hole (112) and the pusher bracket (141). The positioning nut (115) is threaded onto the positioning screw (114).

7. An injection molding machine with automatic demolding according to claim 4, characterized in that: The receiving box (150) is equipped with a cooling fan (152) and a cooling grid frame (153). The cooling fan (152) is located on the top of the receiving box (150), and the air outlet of the cooling fan (152) faces the cooling grid frame (153). The height of the cooling grid frame (153) is flush with the bottom of the inlet gate (151).

8. The injection molding machine with automatic demolding according to claim 1, characterized in that: The frame (110) is provided with a guide assembly (160), which includes a guide post (161) and a guide sleeve (162). The guide post (161) is fixed on the fixed template (121), and the guide sleeve (162) is fixed on the moving template (122). The guide post (161) and the guide sleeve (162) are slidably engaged.

Images