Air tightness detection device for production of injection molded parts
By introducing guide blocks and scale positioning components into the airtightness testing device for injection molded parts, the problems of low efficiency and short lifespan during injection molded part replacement are solved, achieving efficient and accurate airtightness testing.
Patent Information
- Application Number
- CN202520516555.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-24
AI Technical Summary
Existing airtightness testing devices for injection molded parts require frequent replacement of the installation workpiece when changing different batches of injection molded parts, resulting in low work efficiency and affecting the service life of the testing machine.
An airtightness testing device including a mounting block and a positioning component was designed. The positioning component consists of a guide block, a moving rod, and a spring. The guide block is accurately positioned through a guide groove and scale lines, which can be adapted to the airtightness testing of different types of injection molded parts.
It improves the adaptability and positioning accuracy of the testing device, reduces workpiece change time, and extends the service life of the testing machine.
Smart Images
Figure CN223870253U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection molded part testing technology, and in particular to an airtightness testing device for injection molded part production. Background Technology
[0002] Air tightness testing ensures that injection molded parts are free of even the smallest gaps or defects during manufacturing, thereby improving overall product quality. Testing allows for the timely detection and correction of these issues. An air tightness testing machine works by fixing the injection molded part at a workstation, introducing compressed air into the parts' openings, and then using the equipment to check for leaks.
[0003] There are many shapes of injection molded parts. After testing the same batch of injection molded parts, it is necessary to replace the mounting parts of the air tightness testing machine. The mounting parts are used to fix the air pipes. Since the shapes of injection molded parts in different batches are different, it is necessary to replace the mounting parts that match the air holes of the injection molded parts. However, disassembling and assembling the parts takes time, which affects work efficiency. Moreover, frequent disassembly and assembly will also affect the service life of the testing machine. Utility Model Content
[0004] The purpose of this application is to provide an airtightness testing device for injection molded parts production, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this application provides the following technical solution:
[0006] An airtightness testing device for injection molded parts production includes a mounting block and a positioning assembly mounted on the mounting block. The positioning assembly includes a guide block, a moving rod, and a spring. The guide block is movably mounted on the mounting block. A guide groove is formed through the outer wall of the side of the mounting block. One end of the mounting block has a hole in its outer wall that communicates with the guide groove. The guide block is movably mounted inside the guide groove. One end of the moving rod is embedded inside the hole in the mounting block and abuts against the outer wall of the guide block. A spring is installed between the end of the moving rod away from the mounting block and the end of the mounting block. Air pipe connecting rings are fixedly installed at both ends of the guide block. A second guide groove is formed through the outer wall of the side of the guide block. The guide block and the mounting block are arranged in a cross shape. The lower part of the guide block in the second guide groove is embedded inside the first guide groove. The guide block moves laterally left and right on the mounting block through the second guide groove.
[0007] Preferably, the upper outer wall of the mounting block has a through-groove first groove, the upper outer wall of the guide block has a fitting groove, and the bottom of the fitting groove has a through-groove second groove, the width of which is smaller than the width of the fitting groove. A nut is embedded in the fitting groove. The nut is a regular hexagon, with two symmetrical outer walls that fit against the inner walls of the fitting groove. A threaded rod is installed in the nut, passing through the bottom of the mounting block and through both the first and second grooves. A fixing plate is fixedly installed on the upper outer wall of the guide block. A slot is formed on the outer wall of the fixing plate, the width of which corresponds to the width of the second groove. The nut is held between the fixing plate and the bottom of the fitting groove.
[0008] The beneficial effects of this utility model are: by setting a positioning component, the guide block moves back and forth, left and right on the mounting block and compares with the scale line to accurately locate the position of the compressed air pipe, which can be used to test the air tightness of various types of injection molded parts and improve the adaptability of the testing device. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0010] Figure 2 This is an exploded view of the overall structure of this utility model;
[0011] Figure 3 In this utility model Figure 2 A magnified schematic diagram of the structure of region A;
[0012] Figure 4 In this utility model Figure 2 A magnified schematic diagram of the local structure of region B;
[0013] In the diagram: 1. Mounting block; 2. Guide groove one; 3. Slide groove one; 4. Guide block; 5. Guide groove two; 6. Fixing plate; 7. Moving rod; 8. Spring; 9. Slide groove two; 10. Fitting groove; 11. Nut; 12. Screw. Detailed Implementation
[0014] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings, so that the advantages and features of this utility model can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of this utility model. The directional terms mentioned in this utility model, such as "up," "down," "front," "back," "left," "right," "top," and "bottom," are only for reference to the accompanying drawings. Therefore, the directional terms used are for the purpose of explaining and understanding this utility model, and not for limiting this utility model.
[0015] like Figure 1-4An airtightness testing device for injection molded parts production is shown, comprising a mounting block 1 and a positioning assembly mounted on the mounting block 1. The positioning assembly includes a guide block 4, a moving rod 7, and a spring 8. The guide block 4 is movably mounted on the mounting block 1. A guide groove 2 is formed through the outer wall of the side of the mounting block 1. One end of the mounting block 1 has a hole in its outer wall that communicates with the guide groove 2. The guide block 4 is movably mounted inside the guide groove 2. One end of the moving rod 7 is embedded inside the hole in the mounting block 1 and abuts against the outer wall of the guide block 4. A spring 8 is installed between the end of the moving rod 7 away from the mounting block 1 and the end of the mounting block 1. Air pipe connecting rings are fixedly installed at both ends of the guide block 4. A second guide groove 5 is formed through the outer wall of the side of the guide block 4. The guide block 4 and the mounting block 1 are arranged in a cross shape. The lower part of the guide block 4 located in the second guide groove 5 is embedded inside the first guide groove 2. The guide block 4 moves laterally left and right on the mounting block 1 through the second guide groove 5.
[0016] A sliding groove 3 is formed through the upper outer wall of mounting block 1, and a fitting groove 10 is formed through the upper outer wall of guide block 4. A sliding groove 9 is formed through the bottom of fitting groove 10, and the width of sliding groove 9 is smaller than the width of fitting groove 10. A nut 11 is embedded in fitting groove 10. The nut 11 is a regular hexagon. Two symmetrical outer walls of the nut 11 fit against the two inner walls of fitting groove 10. A screw 12 is threaded into the nut 11. The screw 12 passes through the bottom of mounting block 1 and through sliding groove 3 and sliding groove 9. A fixing plate 6 is fixedly installed on the upper outer wall of guide block 4. A slot is formed through the outer wall of fixing plate 6, and the width of the slot corresponds to sliding groove 9. The nut 11 is clamped between fixing plate 6 and the bottom of fitting groove 10.
[0017] Example: A mounting ring is fixedly installed on the outer wall of the un-drilled end of mounting block 1. The mounting ring is installed in conjunction with an external displacement mechanism, on which multiple pneumatic detection devices can be installed. The air pipe connecting ring at the end of guide block 4 is connected to a compressed air pipe. Scale lines are provided on the side outer walls of both mounting block 1 and guide block 4. In the initial state, screw 12 is threadedly connected to nut 11, and the screw head of screw 12 abuts against the bottom outer wall of mounting block 1, thus fixing mounting block 1 and guide block 4 together. Loosen screw 12 and nut 11, and the operator can move guide block 4. Spring 8 drives moving rod 7 to push guide block 4, providing buffer force for the movement of guide block 4, preventing the operator from moving guide block 4 too quickly, and reducing wear between guide block 4 and mounting block 1. Guide block 4 moves back and forth inside guide groove 1 2. Guide block 4 moves left and right on mounting block 1 through guide groove 2 5. When guide block 4 moves left and right, guide block 4 moves outside screw 12 through sliding groove 2 9. Nut 11 slides inside fitting groove 10. When guide block 4 moves back and forth, screw 12 is driven to move inside sliding groove 1 3. When moving, the scale line can be used to improve positioning accuracy. After moving into place, screw 12 can be tightened to fix mounting block 1 and guide block 4.
[0018] The above describes the positioning method of the compressed air pipes. Multiple pneumatic detection devices are installed on the external displacement mechanism, which can adjust the position of multiple compressed air pipes according to the number of sealing pipes of the injection molded part, and at the same time correspond to the position of the sealing pipes of the injection molded part.
[0019] It should be noted that the parts not covered in this utility model are the same as or can be implemented using existing technology; the various drives in this utility model can be implemented by corresponding power structures such as cylinders, oil cylinders, electric cylinders, and motors in conjunction with connecting rods, guide rods, etc., and are not limited to the structures described in the specification and the drawings.
[0020] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.
Claims
1. An airtightness testing device for injection molded parts production, comprising a mounting block (1) and a positioning assembly mounted on the mounting block (1), characterized in that: The positioning component includes a guide block (4), a moving rod (7), and a spring (8). The guide block (4) is movably mounted on the mounting block (1). A guide groove (2) is provided through the outer wall of the side of the mounting block (1). One end of the mounting block (1) is fixed with a hole in its outer wall, and the hole communicates with the guide groove (2). The guide block (4) is movably mounted inside the guide groove (2). One end of the moving rod (7) is embedded in the hole of the mounting block (1) and abuts against the outer wall of the guide block (4). A spring (8) is installed between the end of the moving rod (7) away from the mounting block (1) and the end of the mounting block (1). Air pipe connecting rings are fixedly installed at both ends of the guide block (4).
2. The airtightness testing device for injection molded parts production according to claim 1, characterized in that: The guide block (4) has a guide groove 2 (5) through its outer side wall. The guide block (4) and the mounting block (1) are arranged in a cross shape. The lower part of the guide block (4) is embedded in the guide groove 1 (2). The guide block (4) moves horizontally left and right on the mounting block (1) through the guide groove 2 (5).
3. The airtightness testing device for injection molded parts production according to claim 1, characterized in that: The upper outer wall of the mounting block (1) is provided with a sliding groove (3), the upper outer wall of the guide block (4) is provided with a fitting groove (10), the bottom of the fitting groove (10) is provided with a sliding groove (9), and the width of the sliding groove (9) is smaller than the width of the fitting groove (10).
4. The airtightness testing device for injection molded parts production according to claim 3, characterized in that: A nut (11) is embedded inside the fitting groove (10). The nut (11) is a regular hexagon. Two symmetrical outer walls of the nut (11) fit against the inner walls of the fitting groove (10). A screw (12) is threaded inside the nut (11). The screw (12) is inserted from the bottom of the mounting block (1) and passes through the first groove (3) and the second groove (9).
5. The airtightness testing device for injection molded parts production according to claim 4, characterized in that: A fixing plate (6) is fixedly installed on the upper outer wall of the guide block (4). A slot is opened through the outer wall of the fixing plate (6). The width of the slot corresponds to the sliding groove (9). The nut (11) is clamped between the fixing plate (6) and the bottom of the fitting groove (10).