A welding device for injection molding machine frame
By combining robotic arms and limiting components, the problem of low efficiency in manual welding of injection molding machine frames is solved, achieving a highly efficient and stable welding process, which is applicable to various models of injection molding machine frames.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NINGBO L K MASCH CO LTD
- Filing Date
- 2023-02-20
- Publication Date
- 2026-05-26
AI Technical Summary
The existing injection molding machine frame is inefficient to weld manually, making it difficult to meet the needs of mass production.
Welding is performed using a robotic arm, and components such as abutment racks, gear sets, limiters, fixing blocks, and clamping blocks are used to restrict the movement and offset of the injection molding machine frame, ensuring the accuracy and stability of the welding.
It improves the convenience and efficiency of welding, enables mass production of injection molding machine frames, reduces offset and shaking during the welding process, and enhances the precision and stability of welding. It is suitable for different models of injection molding machine frames.
Smart Images

Figure CN116372427B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of welding technology, and more specifically, to a welding apparatus for an injection molding machine frame. Background Technology
[0002] Injection molding machines, also known as injection molding machines or injection molding machines, are the main molding equipment used to mold thermoplastic or thermosetting plastics into various shapes of plastic products using plastic molds. Injection molding machines have the ability to mold complex-shaped, dimensionally precise, or dense plastic products with metal inserts in one step, and are widely used in defense, electromechanical, automotive, transportation, building materials, packaging, agriculture, education and health, and various fields of people's daily lives.
[0003] In the current injection molding machine manufacturing process, the injection molding machine frame is often formed by manual welding. However, manual welding cannot meet the supply when the demand for injection molding machine frames is large, resulting in low manufacturing efficiency, which needs to be improved. Summary of the Invention
[0004] To address the issue of low efficiency in manual welding of injection molding machine frames, this application provides an injection molding machine frame welding device.
[0005] This application provides a welding device for an injection molding machine frame, which adopts the following technical solution:
[0006] A welding device for an injection molding machine frame includes a machine body, the machine body including a worktable and a robot arm, the worktable for placing the injection molding machine frame, and the robot arm equipped with a welder for welding the injection molding machine frame.
[0007] With the above technical solution, in actual use, the injection molding machine frame is placed on the workbench, and the welding is carried out by moving the welding device with a robotic arm. Compared with manual welding, it is more convenient and can achieve mass production when there is a large demand for injection molding machine frames, resulting in higher manufacturing efficiency.
[0008] Furthermore, the worktable is provided with an abutment hole and a mounting cavity. The abutment hole extends from the worktable to the mounting cavity. An abutment spring is provided at the bottom of the mounting cavity. An abutment rack is connected to the end of the abutment spring away from the bottom of the mounting cavity. The abutment rack protrudes from the worktable surface through the abutment hole. The elastic force of the abutment spring restricts the movement of the abutment rack towards the bottom of the mounting cavity. The worktable is provided with a limiting hole. The limiting hole is elongated and extends from the worktable to the mounting cavity. The mounting cavity is provided with a gear set and a limiting member. The end of the limiting member away from the bottom of the mounting cavity is located inside the mounting cavity. When the injection molding machine frame places the worktable, the abutment rack moves down until its end away from the bottom of the mounting cavity is flush with the surface of the worktable. The gear set rotates, causing the limiting member to move upward and protrude from the surface of the worktable. At this time, the limiting member abuts against the side wall of the injection molding machine frame.
[0009] By using the above technical solution, a contact rack and gear set are set up. When the injection molding machine frame presses down on the contact rack and causes the contact rack to move downward, the gear set rotates and causes the limiting component to move upward. The limiting component abuts against the side wall of the injection molding machine frame to restrict the movement of the injection molding machine frame, thereby reducing the force deviation of the injection molding machine frame during the welding process and making the welding more precise.
[0010] Furthermore, the wall of the limiting hole is provided with a limiting groove, the bottom of the limiting groove is provided with a return spring, and the end of the return spring away from the bottom of the limiting groove is provided with a limiting block. The worktable is hinged to a limiting plate, and the limiting plate restricts the movement of the limiting block away from the bottom of the limiting groove. The limiting component includes a limiting rack, a sliding plate, and a sliding block. The sliding plate is located at the end of the limiting rack away from the bottom of the mounting cavity, and the sliding block is located at the end of the sliding plate away from the limiting rack. The sliding block slides on the limiting rack, and the sliding direction of the sliding block is consistent with the length direction of the limiting hole. When the limiting rack moves upward, the sliding block moves upward, causing the limiting plate to rotate. When the limiting plate rotates to the point of separation from the limiting block, the return spring pushes the limiting block and the sliding block to move away from the bottom of the limiting groove until the sliding block abuts against the injection molding machine frame.
[0011] By using the above technical solution, components such as limit blocks and sliding blocks are set up. When the sliding block pushes the limit plate to rotate and separate from the limit block, the elastic force of the return spring causes the limit block and the sliding block to move away from the bottom of the limit groove and press against the injection molding machine frame. In this way, the offset of the injection molding machine frame is further restricted. Secondly, different types of injection molding machine frames have different sizes during the processing. By pressing against them in this way, it is applicable to more sizes of injection molding machine frames, thus improving the applicability of the machine body.
[0012] Furthermore, the worktable is equipped with a fixing component; when the sliding block abuts against the injection molding machine frame, the fixing component restricts the sliding block from moving towards the bottom of the limiting groove.
[0013] With the above technical solution, in the actual processing, the sliding block is pressed against the injection molding machine frame by the elastic force of the return spring, so there is still a possibility that the injection molding machine frame will shake and shift. However, by setting the fixing part, the situation of the injection molding machine frame shifting during processing due to the movement of the sliding block is further reduced, making the welding of the injection molding machine frame more stable.
[0014] Furthermore, the sliding block has a positioning groove at the end away from the bottom of the limiting groove, and a fixing groove on the side wall of the positioning groove. The fixing member is located in the fixing groove and includes a fixing spring and a fixing block. The fixing spring is located at the bottom of the fixing groove, and the end of the fixing spring away from the bottom of the fixing groove is connected to the fixing block. The fixing block protrudes from the side wall of the positioning groove and has an inclined surface. The inclined surface is located at the end of the fixing block away from the bottom of the positioning groove and extends in the direction away from the bottom of the positioning groove towards the bottom of the fixing groove. The wall of the limiting hole has a fixing rod, and a locking block is sleeved on the fixing rod. When the sliding block approaches the fixing rod, the fixing rod is embedded in the positioning groove, and the locking block abuts against the inclined surface and pushes the fixing block towards the bottom of the fixing groove until the distance between the end of the locking block away from the bottom of the positioning groove and the bottom of the positioning groove is less than the distance between the end of the fixing block near the bottom of the positioning groove and the bottom of the positioning groove. At this time, the fixing block resets and prevents the locking block from coming out of the positioning groove.
[0015] By using the above technical solution, and by setting components such as a fixing block and a locking block, when the fixing rod is embedded in the positioning groove, the locking block abuts against the inclined surface, causing the fixing block to move towards the bottom of the fixing groove. When the sliding block continues to move, the fixing block resets and restricts the locking block from coming out of the positioning groove. Fixing the sliding block in this way is more convenient and further reduces the possibility of the injection molding machine frame shifting during the welding process, making the welding more stable.
[0016] Furthermore, the fixing rod is sleeved on the release block, the release block slides on the fixing rod, the release block slides along the length direction of the fixing rod, and the fixing rod is located on the side of the locking block away from the bottom of the positioning groove; the release block is provided with an inclined surface two, the inclined surface two is located at the end of the release block away from the locking block, and the inclined surface two is gradually tapered along the direction away from the locking block.
[0017] With the above technical solution, by setting up an ejector block, in actual use, when it is necessary to remove the injection molding machine frame, since the model of the injection molding machine frame is specific, the injection molding machine frame can still be removed from the upper surface of the worktable by the clamping of the sliding block. Then, the sliding block is moved away from the limit block, so that the ejector block is embedded in the positioning groove. When the inclined surface touches the fixed block, the sliding block is moved towards the bottom of the limit groove, so that the fixed block pushes the ejector block until the ejector block touches the locking block. Then, the continued movement of the sliding block causes the fixed block to be forced to move towards the bottom of the fixed groove, and causes the fixed rod to disengage from the positioning groove. Compared with the method of inserting a hand or other device into the positioning groove to move the fixed block towards the bottom of the fixed groove, and then causing the fixed rod to disengage from the positioning groove, the method of setting up an ejector block is more convenient.
[0018] Furthermore, there are two of each of the locking blocks and the release blocks, and the locking blocks and the release blocks correspond one to one. The fixing rods are arranged in sequence along the direction away from the bottom of the positioning groove: locking block, release block, locking block, release block.
[0019] With the above technical solution, in actual use, there are several different models of injection molding machine frames. Therefore, two locking blocks and ejection blocks are provided, which are more suitable for welding different models of injection molding machine frames, making the overall applicability higher.
[0020] Furthermore, the sliding block is provided with an elastic element, which is located at the end of the sliding block where the positioning groove is provided.
[0021] By using the above technical solution, an elastic element is set up to abut against the injection molding machine frame, which reduces the impact of the injection molding machine frame vibration on the sliding block. Secondly, it also facilitates the removal of the injection molding machine frame, reducing the possibility of parts being scratched due to direct contact between the injection molding machine frame and the sliding block during removal.
[0022] In summary, this application includes at least one of the following beneficial technical effects:
[0023] (1) By setting up a robotic arm, welding becomes more convenient, and mass production can be achieved when there is a large demand for injection molding machine frames, resulting in higher manufacturing efficiency;
[0024] (2) By setting up a contact rack and gear set, the limiting part abuts against the side wall of the injection molding machine frame to limit the movement of the injection molding machine frame, reducing the force displacement of the injection molding machine frame during the welding process, making the welding more precise;
[0025] (3) By setting fixed blocks and locking blocks to fix the sliding blocks, the displacement of the injection molding machine frame during the welding process is further reduced, making the welding more stable. Attached Figure Description
[0026] Figure 1 This is an overall schematic diagram of an embodiment.
[0027] Figure 2 This is a cross-sectional schematic diagram of an embodiment.
[0028] Figure 3 This is a partial schematic diagram of an embodiment.
[0029] Figure 4 for Figure 2 An enlarged diagram of A in the diagram.
[0030] Figure 5 for Figure 2 Enlarged diagram of B in the diagram.
[0031] Reference numerals: 1. Machine body; 2. Workbench; 3. Robot arm; 4. Welder; 5. Abutment hole; 6. Mounting cavity; 7. Abutment spring; 8. Abutment rack; 9. Gear set; 91. Abutment gear; 92. Conveyor belt; 93. Limiting gear; 10. Limiting component; 101. Limiting rack; 102. Sliding plate; 103. Sliding block; 11. Limiting hole; 12. Limiting groove; 13. Return spring; 14. Limiting block; 15. Limiting plate; 16. Elastic component; 17. Positioning groove; 18. Fixing groove; 19. Fixing component; 191. Fixing spring; 192. Fixing block; 20. Inclined surface one; 21. Fixing rod; 22. Locking block; 23. Disengagement block; 24. Inclined surface two; 25. Inclined surface three. Detailed Implementation
[0032] The present application will be further described in detail below with reference to the accompanying drawings.
[0033] This application discloses a welding device for the frame of an injection molding machine.
[0034] Example:
[0035] See Figure 1 and Figure 2 A welding device for an injection molding machine frame includes a body 1. The body 1 includes a worktable 2 and a robot arm 3. The worktable 2 is for placing the injection molding machine frame. The robot arm 3 is equipped with a welder 4 and a control unit. The welder 4 is used to weld the injection molding machine frame, and the control unit is used to control the robot arm 3.
[0036] The worktable 2 has an abutment hole 5 and a mounting cavity 6, with the abutment hole 5 extending from the worktable 2 to the mounting cavity 6. Abutment spring 7 is located at the bottom of the mounting cavity 6, and an abutment rack 8 is connected to the spring 7. The rack 8 is located at the end of the spring 7 furthest from the bottom of the mounting cavity 6, and protrudes from the surface of the worktable 2 through the abutment hole 5. The elasticity of the spring 7 restricts the movement of the rack 8 towards the bottom of the mounting cavity 6. When the injection molding machine frame is placed on the surface of the worktable 2, the frame presses against the end of the rack 8 furthest from the bottom of the mounting cavity 6, causing the rack 8 to move towards the bottom of the mounting cavity 6.
[0037] See Figure 2 and Figure 3The mounting cavity 6 is equipped with a gear set 9 and a limiting member 10. The gear set 9 includes an abutting gear 91, a conveyor belt 92, and a limiting gear 93. The abutting gear 91 abuts against the teeth of the abutting rack 8, and the abutting gear 91 drives the limiting gear 93 to rotate via the conveyor belt 92. The end of the limiting member 10 away from the bottom of the mounting cavity 6 is located inside the mounting cavity 6. The limiting gear 93 is connected to the limiting member 10, and the rotation of the abutting gear 91 controls the vertical movement of the limiting member 10. The worktable 2 is equipped with a limiting hole 11, which is elongated and extends from the worktable 2 to the mounting cavity 6. When the abutting rack 8 moves down until its end away from the bottom of the mounting cavity 6 is flush with the surface of the worktable 2, the rotation of the gear set 9 causes the limiting member 10 to protrude upwards and protrude from the surface of the worktable 2.
[0038] The limiting component 10 includes a limiting rack 101, a sliding plate 102, and a sliding block 103. The limiting rack 101 meshes with the limiting gear 93. The sliding plate 102 is located at the end of the limiting rack 101 away from the bottom of the mounting cavity 6, and the length direction of the sliding plate 102 is consistent with the length direction of the limiting hole 11. The sliding block 103 is located at the end of the sliding plate 102 away from the limiting rack 101, and the sliding block 103 slides on the limiting rack 101. The sliding direction of the sliding block 103 is consistent with the length direction of the sliding plate 102. In actual use, four limiting components 10 and four gear sets 9 are provided. The four limiting components 10 respectively abut against the outer periphery of the injection molding machine frame to limit the offset of the injection molding machine frame.
[0039] See Figure 2 and Figure 4 The limiting hole 11 has a limiting groove 12 on its wall, with the opening of the limiting groove 12 facing the abutment hole 5. A return spring 13 is provided at the bottom of the limiting groove 12, and the return spring 13 is connected to a limiting block 14. The limiting block 14 is located at the end of the return spring 13 away from the bottom of the limiting groove 12, and the elastic force of the return spring 13 restricts the return block from moving towards the bottom of the limiting groove 12. The worktable 2 is hinged to a limiting plate 15, which is located above the limiting hole 11 and fits against the upper surface of the worktable 2. The limiting plate 15 is used to restrict the movement of the limiting block 14 away from the bottom of the limiting groove 12.
[0040] When the abutting rack 8 moves downward, the gear set 9 causes the limiting rack 101 to move upward, and the sliding block 103 moves upward to push the limiting plate 15, causing the limiting plate 15 to rotate. When the limiting plate 15 rotates to the point where it no longer contacts the limiting block 14, the return spring 13 pushes the limiting block 14 and the sliding block 103 to move away from the bottom of the limiting groove 12.
[0041] The sliding block 103 is provided with an elastic element 16, which is located at the end of the sliding block 103 away from the bottom of the limiting groove 12. The elastic element 16 is used to abut against the injection molding machine frame, and the setting of the elastic element 16 also facilitates the subsequent removal of the injection molding machine frame. In actual use, the elastic element 16 can be made of rubber, or alternatively, silicone. The sliding block 103 is provided with a positioning groove 17, which is located at the end of the sliding block 103 away from the bottom of the limiting groove 12. The side wall of the positioning groove 17 is provided with a fixing groove 18, and the bottom of the fixing groove 18 is provided with a fixing element 19, which is used to restrict the sliding block 103 from moving towards the bottom of the limiting groove 12. The fixing member 19 includes a fixing spring 191 and a fixing block 192. The fixing spring 191 is located at the bottom of the fixing groove 18. The end of the fixing spring 191 away from the bottom of the fixing groove 18 is connected to the fixing block 192. The fixing block 192 protrudes from the side wall of the positioning groove 17. The fixing block 192 is provided with an inclined surface 20. The inclined surface 20 is located at the end of the fixing block 192 away from the bottom of the positioning groove 17. The inclined surface 20 extends from the bottom of the positioning groove 17 toward the bottom of the fixing groove 18.
[0042] See Figure 2 and Figure 5 A fixing rod 21 is provided on the wall of the limiting hole 11. The fixing rod 21 is located on one side of the wall of the limiting hole 11 along its length and corresponds to the positioning groove 17. The fixing rod 21 is fitted with a locking block 22 and a release block 23. The locking block 22 has an inclined surface 3 25, which is located at the end of the locking block 22 near the bottom of the positioning groove 17. The inclined surface 3 25 gradually expands in the direction away from the bottom of the positioning groove 17. The setting of the inclined surface 3 25 facilitates contact with the fixing block 192, so that the fixing block 192 moves in the direction closer to the bottom of the fixing groove 18, reducing the wear of the fixing block 192.
[0043] The ejection block 23 is located on the side of the locking block 22 away from the bottom of the positioning groove 17. The ejection block 23 slides on the fixing rod 21, and the sliding direction of the ejection block 23 is the length direction of the fixing rod 21. The ejection block 23 is provided with an inclined surface 24, which is located at the end of the ejection block 23 away from the locking block 22. The inclined surface 24 gradually expands in the direction close to the locking block 22. The setting of the inclined surface 24 facilitates the movement of the fixing block 192 towards the bottom of the fixing groove 18.
[0044] As the sliding block 103 moves closer to the fixed rod 21, the fixed rod 21 engages with the positioning groove 17. The continued movement of the sliding block 103 causes the locking block 22 to abut against the inclined surface 20. The pressure on the inclined surface 20 causes the fixed block 192 to move closer to the bottom of the fixing groove 18, thus compressing the fixing spring 191. As the sliding block 103 continues to move, the distance between the end of the locking block 22 furthest from the bottom of the positioning groove 17 and the bottom of the positioning groove 17 is less than the distance between the end of the fixed block 192 furthest from the bottom of the positioning groove 17. The elastic force of the fixing spring 191 causes the fixed block 192 to move further away from the bottom of the fixing groove 18. At this point, when the sliding block 103 moves closer to the bottom of the limiting groove 12, it is restricted by the fixed block 192 and cannot separate from the fixed rod 21. When separation is required, first squeeze the elastic element 16 and remove the injection molding machine frame. Then move the sliding block 103 away from the bottom of the limiting groove 12, so that the ejection block 23 presses against the inclined surface 20 and the fixing block 192 moves towards the bottom of the fixing groove 18. When the distance between the end of the ejection block 23 away from the bottom of the positioning groove 17 and the bottom of the positioning groove 17 is less than the distance between the end of the fixing block 192 near the bottom of the positioning groove 17 and the bottom of the positioning groove 17, move the sliding block 103 towards the bottom of the limiting groove 12. The fixing block 192 presses against the inclined surface 24 and drives the ejection block 23 towards the locking block 22. After the ejection block 23 presses against the locking block 22, the fixing block 192 moves towards the bottom of the fixing groove 18, and the fixing rod 21 separates from the sliding block 103.
[0045] In practical use, the fixing rod 21 is equipped with two locking blocks 22 and two ejection blocks 23. The locking blocks 22 and ejection blocks 23 correspond one-to-one, and the fixing rod 21 is arranged in sequence from the bottom of the positioning groove 17: locking block 22, ejection block 23, locking block 22, ejection block 23. The two locking blocks 22 and two ejection blocks 23 are provided to facilitate compatibility with different models of injection molding machine frames, thereby improving the overall versatility.
[0046] The working principle of this embodiment is as follows:
[0047] During actual welding, the injection molding machine frame is placed on the upper surface of the workbench 2. The injection molding machine frame abuts against the end of the abutting rack 8 away from the bottom of the mounting cavity 6, causing the abutting rack 8 to move downward. The downward movement of the abutting rack 8 causes the gear set 9 to rotate, driving the limiting rack 101 to move upward. The upward movement of the limiting rack 101 causes the upper end face of the sliding block 103 to press against and push the limiting plate 15 to rotate. When the limiting plate 15 rotates to the point where it no longer contacts the limiting block 14, the compressed return spring 13 resets and pushes the return block and the sliding block 103 to move away from the bottom of the limiting groove 12, so that the fixing rod 21 is embedded in the positioning groove 17. The locking block 22 on the fixing rod 21 causes the fixing block 192 to move towards the bottom of the fixing groove 18, and restricts the sliding block 103 from moving towards the bottom of the limiting groove 12. At this time, the elastic element 16 presses against the outer wall of the injection molding machine frame.
[0048] The above are all 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. A welding device for an injection molding machine frame, comprising a machine body (1), characterized in that: The machine body (1) includes a worktable (2) and a robot (3). The worktable (2) is for placing the injection molding machine frame. The robot (3) is equipped with a welder (4) for welding the injection molding machine frame. The workbench (2) is provided with an abutment hole (5) and a mounting cavity (6). The abutment hole (5) extends through the workbench (2) to the mounting cavity (6). The bottom of the mounting cavity (6) is provided with an abutment spring (7). An abutment rack (8) is connected to one end of the abutment spring (7) away from the bottom of the mounting cavity (6). The abutment rack (8) passes through the abutment hole (5) and protrudes from the surface of the workbench (2). The elastic force of the abutment spring (7) restricts the abutment rack (8) from moving towards the bottom of the mounting cavity (6). The workbench (2) is provided with a limiting hole (11), which is elongated and extends through the workbench (2) to the mounting cavity (6). The mounting cavity (6) is provided with a gear set (9) and a limiting member (10). The end of the limiting member (10) away from the bottom of the mounting cavity (6) is located inside the mounting cavity (6). When the injection molding machine frame is placed on the worktable (2), the abutting rack (8) moves down to the end away from the bottom of the mounting cavity (6) and is flush with the surface of the worktable (2). The gear set (9) rotates, causing the limiting piece (10) to protrude from the upper part and protrude from the surface of the worktable (2). At this time, the limiting piece (10) abuts against the side wall of the injection molding machine frame. The wall of the limiting hole (11) is provided with a limiting groove (12), the bottom of the limiting groove (12) is provided with a return spring (13), the end of the return spring (13) away from the bottom of the limiting groove (12) is provided with a limiting block (14), the worktable (2) is hinged to a limiting plate (15), the limiting plate (15) restricts the limiting block (14) from moving away from the bottom of the limiting groove (12); The limiting member (10) includes a limiting rack (101), a sliding plate (102), and a sliding block (103). The sliding plate (102) is located at the end of the limiting rack (101) away from the bottom of the mounting cavity (6). The sliding block (103) is located at the end of the sliding plate (102) away from the limiting rack (101). The sliding block (103) slides on the limiting rack (101). The sliding direction of the sliding block (103) is consistent with the length direction of the limiting hole (11). When the limiting rack (101) moves upward, the sliding block (103) moves upward, causing the limiting plate (15) to rotate; when the limiting plate (15) rotates to separate from the limiting block (14), the reset spring (13) pushes the limiting block (14) and the sliding block (103) to move away from the bottom of the limiting groove (12) until the sliding block (103) abuts against the injection molding machine frame.
2. The injection molding machine frame welding device according to claim 1, characterized in that: The sliding block (103) is provided with a fixing member (19); When the sliding block (103) abuts against the injection molding machine frame, the fixing part (19) restricts the sliding block (103) from moving towards the bottom of the limiting groove (12).
3. The injection molding machine frame welding device according to claim 2, characterized in that: The sliding block (103) has a positioning groove (17) at one end away from the bottom of the limiting groove (12). The positioning groove (17) has a fixing groove (18) on its side wall. The fixing member (19) is located in the fixing groove (18). The fixing member (19) includes a fixing spring (191) and a fixing block (192). The fixing spring (191) is located at the bottom of the fixing groove (18). The fixing spring (191) is connected to the fixing block (192) at one end away from the bottom of the fixing groove (18). The fixing block (192) protrudes from the side wall of the positioning groove (17). The fixing block (192) has an inclined surface (20). The inclined surface (20) is located at one end of the fixing block (192) away from the bottom of the positioning groove (17). The inclined surface (20) extends from the bottom of the positioning groove (17) toward the bottom of the fixing groove (18). The wall of the limiting hole (11) is provided with a fixing rod (21), and the fixing rod (21) is fitted with a locking block (22); When the sliding block (103) approaches the fixed rod (21), the fixed rod (21) is embedded in the positioning groove (17), and the locking block (22) abuts against the inclined surface (20) and pushes the fixed block (192) to move towards the bottom of the fixed groove (18) until the distance between the end of the locking block (22) away from the bottom of the positioning groove (17) is less than the distance between the end of the fixed block (192) near the bottom of the positioning groove (17) and the bottom of the positioning groove (17). At this time, the fixed block (192) resets and restricts the locking block (22) from coming out of the positioning groove (17).
4. The injection molding machine frame welding device according to claim 3, characterized in that: The fixing rod (21) is sleeved on the release block (23), the release block (23) slides on the fixing rod (21), the release block (23) slides along the length direction of the fixing rod (21), the fixing rod (21) is located on the side of the locking block (22) away from the bottom of the positioning groove (17); the release block (23) is provided with an inclined surface two (24), the inclined surface two (24) is located at the end of the release block (23) away from the locking block (22), and the inclined surface two (24) is gradually tapered in the direction away from the locking block (22).
5. The injection molding machine frame welding device according to claim 4, characterized in that: Two of each of the locking blocks (22) and the ejection blocks (23) are provided. The locking blocks (22) and the ejection blocks (23) correspond one to one, and the fixing rod (21) is arranged in sequence along the direction away from the bottom of the positioning groove (17) as the locking block (22), the ejection block (23), the locking block (22), and the ejection block (23).
6. The injection molding machine frame welding device according to claim 4, characterized in that: The sliding block (103) is provided with an elastic element (16), which is located at one end of the sliding block (103) where a positioning groove (17) is provided.