High polymer material performance test spline injection mold

Abstract

The utility model relates to the technical field of test spline injection molding, and discloses a high polymer material performance test spline injection mold which comprises a fixed mold and a movable mold, one side of the inner wall of the fixed mold is connected with a lining mold, one end of the fixed mold is connected with an injection molding end, one end of the fixed mold is connected with a mounting frame, and the other end of the fixed mold is connected with a connecting frame. The end, close to the connecting frame, of the fixed mold is connected with the air exhaust mechanism, and one side of the mounting frame is connected with the guide rod. A plurality of injection molding cavities are formed through the matching of the molding cavities, the first sealing surfaces and the second sealing surfaces, a plurality of test sample strips can be processed at a time, the yield is effectively improved, the molding cavities are vacuumized through the air exhaust mechanism before injection molding, the quality of injection molded finished products is ensured, demolding can be directly carried out when the fixed mold and the movable mold are separated, and the production efficiency is improved. And the production efficiency is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of test strip injection molding technology, specifically to a polymer material performance test strip injection mold. Background Technology

[0002] Performance test specimens are standard specimens used in material performance testing. They are mainly used to evaluate the mechanical properties, flame retardancy, etc. of materials. These specimens have specific shapes and sizes to ensure the accuracy and comparability of test results. Performance test specimens are usually produced by injection molding.

[0003] Currently, the production of performance test specimen injection molds is mostly limited by traditional mold types. Only a few test specimens can be produced in a single injection, resulting in insufficient output. Moreover, the small size of the test specimens after injection makes demolding difficult, reducing production efficiency. Furthermore, it is difficult to ensure the uniformity of internal injection during injection, which affects production quality.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide an injection mold for polymer material performance testing strips to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: including a fixed mold and a moving mold, an inner liner mold is connected to one side of the inner wall of the fixed mold, an injection end is connected to one end of the fixed mold, an installation frame is connected to one end of the fixed mold, a connecting frame is connected to the other end of the fixed mold, an air extraction mechanism is connected to one end of the fixed mold near the connecting frame, and a guide rod is connected to one side of the installation frame;

[0007] The moving mold includes an extension mold frame, which has multiple forming cavities on one side. A support frame is connected to one end of the extension mold frame, and a receiving groove is connected to one side of the support frame. A hydraulic cylinder connector is connected to one side of the receiving groove. A second cover and a first cover are provided on the inner side of the fixed mold and the outer ring of the inner liner mold corresponding to the forming cavities. One end of the guide rod passes through the connecting frame and the support frame and is connected to a mounting base. A demolding unit is connected to the inner ring of the inner liner mold.

[0008] Preferably, the injection end includes an injection port on the back side of the fixed mold and a transfer cavity communicating with the injection port. An injection channel is connected to one side of the transfer cavity, and one end of the injection channel that is far apart from each other is connected to the first cover.

[0009] Preferably, the air extraction mechanism includes a branch pipe fixedly disposed on the surface of the fixed mold, a venting frame connected to one side of the inner wall of the branch pipe, a spring connected to one side of the venting frame, a sealing plug connected to the other end of the spring, and an air extraction pipe connected to the other end of the branch pipe.

[0010] Preferably, an air extraction hole is provided on one side of the fixed mold, and the sealing plug is located inside the air extraction hole.

[0011] Preferably, the demolding unit includes a ring frame fixedly disposed on one side of the inner wall of the inner liner mold, and multiple sets of elastic frames are connected to one side of the ring frame, and demolding top blocks are connected to the other end of each elastic frame.

[0012] Preferably, the demolding top block has rounded arc surfaces on both sides.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] Multiple injection cavities are formed by the cooperation between the molding cavity and the first and second covers, which can process multiple test strips at once, effectively increasing production. Before injection molding, the molding cavity is evacuated by the air extraction mechanism to ensure the quality of the injection molded product. Demolding can be carried out directly when the fixed mold and the moving mold are separated, which effectively improves production efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an injection mold for testing polymer material performance.

[0016] Figure 2 This is a side cross-sectional view of an injection mold for testing polymer material performance samples according to this utility model.

[0017] Figure 3 for Figure 2 Enlarged structural diagram of section A;

[0018] Figure 4 This is a schematic diagram of the fixed mold in an injection mold for testing polymer material performance samples according to this utility model;

[0019] Figure 5 This is a schematic diagram of the moving mold in an injection mold for testing polymer material performance.

[0020] Figure 6 This is a schematic diagram of the demolding unit in an injection mold for testing polymer material performance.

[0021] In the diagram: 1. Fixed mold; 2. Moving mold; 21. Extension mold base; 22. Molding cavity; 23. Support frame; 24. Receiving groove; 25. Hydraulic cylinder connector; 3. Inner liner mold; 31. First cover; 5. Transfer cavity; 6. Injection channel; 7. Injection port; 8. Mounting frame; 9. Connecting frame; 10. Vacuuming mechanism; 101. Branch pipe; 102. Vent frame; 103. Spring; 104. Sealing plug; 105. Vacuum pipe; 12. Guide rod; 13. Mounting seat; 14. Demolding unit; 141. Ring frame; 142. Elastic frame; 143. Demolding ejector block; 151. Second cover. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-6 The present invention provides a technical solution: including a fixed mold 1 and a moving mold 2, an inner liner mold 3 is connected to one side of the inner wall of the fixed mold 1, an injection end is connected to one end of the fixed mold 1, an mounting frame 8 is connected to one end of the fixed mold 1, a connecting frame 9 is connected to the other end, an air extraction mechanism 10 is connected to one end of the fixed mold 1 near the connecting frame 9, and a guide rod 12 is connected to one side of the mounting frame 8.

[0024] The moving mold 2 includes an extension mold frame 21. Multiple forming cavities 22 are opened on one side of the extension mold frame 21. A support frame 23 is connected to one end of the extension mold frame 21. A receiving groove 24 is connected to one side of the support frame 23. A hydraulic cylinder connector 25 is connected to one side of the receiving groove 24. A second cover 151 and a first cover 31 are opened on the inner side of the fixed mold 1 and the outer ring of the inner liner mold 3 corresponding to the forming cavities 22. One end of the guide rod 12 passes through the connecting frame 9 and the support frame 23 and is connected to the mounting base 13. A demolding unit 14 is connected to the inner ring of the inner liner mold 3.

[0025] Figure 2 As shown in the middle section, the injection end includes an injection port 7 opened on the back side of the fixed mold 1 and a transfer cavity 5 communicating with the injection port 7. An injection channel 6 is connected to one side of the transfer cavity 5. The ends of the injection channels 6 that are far apart from each other are connected to the first cover 31. When the injection device is connected to the injection port 7 and injection is performed, injection is performed in each closed molding cavity 22 through the transfer cavity 5 and the injection channel 6.

[0026] Reference Figure 3 and Figure 4As shown, the air extraction mechanism 10 includes a branch pipe 101 fixedly mounted on the surface of the fixed mold 1. A vent frame 102 is connected to one side of the inner wall of the branch pipe 101. A spring 103 is connected to one side of the vent frame 102. A sealing plug 104 is connected to the other end of the spring 103. An air extraction pipe 105 is connected to the other end of the branch pipe 101. An air extraction hole is opened on one side of the fixed mold 1. The sealing plug 104 is located in the air extraction hole. As can be seen from the attached figure, an external pipeline is connected to one side of the air extraction pipe 105, and a vacuum pump is connected to the other end of the external pipeline. Since this is a conventional setting, it is not described in detail in the instruction manual. After the fixed mold 1 and the moving mold 2 are combined, the vacuum pump extracts air from each branch pipe 101 through the air extraction pipe 105. During air extraction, the sealing plug 104 is pushed up by the airflow, thereby extracting the air from the molding cavity 22. After the air extraction is completed, the elasticity of the spring 103 will push the sealing plug 104 into the air extraction hole, thereby achieving a sealing effect.

[0027] pass Figure 6 As shown, the demolding unit 14 includes a ring frame 141 fixedly installed on one side of the inner wall of the inner mold 3. Multiple sets of elastic frames 142 are connected to one side of the ring frame 141, and demolding top blocks 143 are connected to the other end of each elastic frame 142. Both sides of the demolding top blocks 143 are provided with rounded arc surfaces. When the moving mold 2 enters between the fixed mold 1 and the inner mold 3, it abuts against the arc surface on one side of the demolding top blocks 143, squeezing the demolding top blocks 143 to one side until the extension mold frame 21 is completely inserted into the fixed mold 1 and the inner mold 3. The demolding top blocks 143 are then located in the receiving groove 24. After the injection molding is completed and cooled, when the extension mold frame 21 moves outward, the elastic force of the elastic frame 142 will push the demolding top blocks 143 out of the molding cavity 22, thereby completing the demolding.

[0028] The implementation principle of this application is as follows: When this utility model is in use, the fixed mold 1 is fixed to one side of the injection molding equipment by the mounting bracket 8, and the other end of the guide rod 12 is fixed to the other side of the injection molding equipment by the mounting seat 13, thereby fixing the guide rod 12. The output end of the push cylinder of the injection molding equipment is connected to the hydraulic cylinder connector 25, and the moving mold 2 is pushed into the fixed mold 1 and the inner mold 3. After merging, the second cover 151 and the first cover 31 will seal both sides of the molding cavity 22, thereby forming a sealed molding cavity 22. Then, the vacuum pump is started, and the air is extracted from the molding cavity 22 by the air extraction mechanism 10. Then, the raw material is injected into the sealed molding cavity 22 through the injection end. After molding and cooling, the moving mold 2 is extracted. At the same time as extraction, the demolding unit 14 will pop out the test strips in each molding cavity 22.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A polymer material performance testing strip injection mold, comprising a fixed mold (1) and a moving mold (2), characterized in that: The inner wall of the fixed mold (1) is connected to an inner liner mold (3), one end of the fixed mold (1) is connected to an injection end, one end of the fixed mold (1) is connected to an mounting bracket (8), and the other end is connected to a connecting bracket (9). The end of the fixed mold (1) near the connecting bracket (9) is connected to an air extraction mechanism (10), and one side of the mounting bracket (8) is connected to a guide rod (12). The moving mold (2) includes an extension mold frame (21), which has multiple forming cavities (22) on one side. A support frame (23) is connected to one end of the extension mold frame (21). A receiving groove (24) is connected to one side of the support frame (23). A hydraulic cylinder connector (25) is connected to one side of the receiving groove (24). A second cover (151) and a first cover (31) are provided on the inner side of the fixed mold (1) and the outer ring of the inner liner mold (3) corresponding to the forming cavities (22). One end of the guide rod (12) passes through the connecting frame (9) and the support frame (23) and is connected to the mounting base (13). A demolding unit (14) is connected to the inner ring of the inner liner mold (3).

2. The injection mold for polymer material performance testing strips according to claim 1, characterized in that: The injection end includes an injection port (7) opened on the back side of the fixed mold (1) and a transfer cavity (5) communicating with the injection port (7). An injection channel (6) is connected to one side of the transfer cavity (5). The ends of the injection channels (6) that are far apart from each other are connected to the first cover (31).

3. The injection mold for polymer material performance testing strips according to claim 1, characterized in that: The air extraction mechanism (10) includes a branch pipe (101) fixedly installed on the surface of the fixed mold (1). A vent frame (102) is connected to one side of the inner wall of the branch pipe (101). A spring (103) is connected to one side of the vent frame (102). A sealing plug (104) is connected to the other end of the spring (103). An air extraction pipe (105) is connected to the other end of the branch pipe (101).

4. The injection mold for polymer material performance testing strips according to claim 3, characterized in that: The fixed mold (1) has an air extraction hole on one side, and the sealing plug (104) is located inside the air extraction hole.

5. The injection mold for polymer material performance testing strips according to claim 1, characterized in that: The demolding unit (14) includes a ring frame (141) fixedly installed on one side of the inner wall of the inner liner mold (3). Multiple sets of elastic frames (142) are connected to one side of the ring frame (141), and demolding top blocks (143) are connected to the other end of each elastic frame (142).

6. The injection mold for polymer material performance testing strips according to claim 5, characterized in that: Both sides of the demolding top block (143) are provided with rounded arc surfaces.

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