Injection extension rod quick insertion structure of injection molding machine

Abstract

The utility model relates to injection molding machine technical field especially is involved in an injection molding machine injection prolongs the quick plug structure of pole, including driving part, connecting block and prolongs the pole, driving part is used for and template rotation connection, prolongs the pole is used for and piston rod rotation connection, connecting block is located between driving part and prolongs the pole, driving part's output and connecting block far from one end of prolonging the pole connection, recessed formation has the accommodation groove for accommodating prolonging the pole on the one end face of connecting block close to prolonging the pole, the inner wall on accommodation groove is equipped with locking groove and connecting groove, connecting groove far from one end of prolonging the pole and locking groove intercommunication, the one end of connecting groove close to prolonging the pole extends to the one end face of connecting block close to prolonging the pole along the axial direction, protrudes and has locking rod on prolonging the pole, locking rod embeds in locking groove along connecting groove, through the cooperation of locking rod, locking groove and connecting groove, the locking rod of prolonging the pole rotates and locks after inserting connecting groove along the axial direction, need not tool, and installation is convenient and quick.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, and in particular to a quick-insertion structure for an injection extension rod of an injection molding machine. Background Technology

[0002] Traditional injection molding machine extension rods are typically connected by being screwed directly into the screw tail via threads. This requires specialized tools for repeated tightening, which is time-consuming, limits operating space, and results in low installation efficiency. Threaded fits are prone to eccentric forces due to machining errors or wear, exacerbating barrel wear. Replacing the extension rod requires disassembling the entire injection unit, affecting production continuity. Insufficient preload can cause loosening, while overload can damage the threads. Utility Model Content

[0003] The technical problem to be solved by this utility model is: in order to overcome the problem that the injection extension rod of the injection molding machine is usually connected by directly screwing it into the tail of the screw through a thread in the prior art, which requires special tools to repeatedly screw it, which is time-consuming and has limited operating space and low installation efficiency, a quick-connect structure for the injection extension rod of the injection molding machine is provided.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a quick-connect structure for an injection extension rod of an injection molding machine, including a driving component, a connecting block, and an extension rod. The driving component is used to rotatably connect with the template, and the extension rod is used to rotatably connect with the piston rod. The connecting block is located between the driving component and the extension rod. The output end of the driving component is connected to the end of the connecting block away from the extension rod. A receiving groove for accommodating the extension rod is recessed on the end face of the connecting block near the extension rod. A locking groove extending circumferentially and a connecting groove extending axially are formed on the inner wall of the receiving groove. The end of the connecting groove away from the extension rod is connected to the locking groove. The end of the connecting groove near the extension rod extends axially to the end face of the connecting block near the extension rod. A locking rod protruding on the extension rod matches the connecting groove and the receiving groove. The locking rod is embedded in the locking groove along the connecting groove. Through the cooperation of the locking rod, the locking groove, and the connecting groove, the locking rod of the extension rod is inserted into the connecting groove axially and rotated to lock. No tools are required, and the installation is convenient and quick. The circumferentially extending locking groove evenly transmits the plasticizing torque to the connecting block, avoiding stress concentration in the threaded connection.

[0005] To address the issue of high costs and material waste associated with replacing the entire extension rod after partial wear, the extension rod is further designed to include an extension portion and a mounting portion located near the connecting block. A locking rod is located on the extension portion. Two clamping portions are formed on the end of the mounting portion near the extension portion, spaced apart from each other. Clamping grooves for accommodating the extension portion are formed on the adjacent surfaces of the two clamping portions. The two clamping portions are connected by a threaded connector.

[0006] To address the issue of seal failure caused by vibration transmission due to alignment errors when the extension rod and piston rod are rigidly connected, the quick-connect structure for the injection extension rod of the injection molding machine further includes a first mounting base. The first mounting base is used to connect with the piston rod, and the mounting part and the first mounting base are rotatably connected.

[0007] To address the issue of structural resonance caused by output torque when the drive component is directly fixed to the template, the quick-connect structure for the injection extension rod of the injection molding machine further includes a second mounting base. The second mounting base is used to connect with the template, and the drive component is rotatably connected to the first mounting base.

[0008] To address the issue of unstable locking force in mechanical or pneumatic drives, which can easily lead to loosening during high-pressure injection, a hydraulic cylinder is further included as the driving component.

[0009] The beneficial effects of this utility model are as follows: This utility model provides a quick-insertion structure for an injection extension rod of an injection molding machine. Through the cooperation of the locking rod, the locking groove and the connecting groove, the locking rod of the extension rod is inserted into the connecting groove along the axial direction and then rotated to lock. No tools are required, and the installation is convenient and quick. The circumferentially extended locking groove evenly transmits the plasticizing torque to the connecting block, avoiding stress concentration in the threaded connection. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a utility model Figure 1 Enlarged structural diagram at point A;

[0013] Figure 3 This is a cross-sectional structural schematic diagram of the present invention;

[0014] Figure 4 This is a utility model Figure 3 Enlarged structural diagram at point B;

[0015] Figure 5 This is a schematic diagram of the structure of the connecting block of this utility model.

[0016] In the figure: 1. Driving component, 2. Connecting block, 21. Receiving groove, 22. Locking groove, 23. Connecting groove, 3. Extension rod, 31. Locking rod, 32. Extension part, 33. Mounting part, 34. Clamping part, 341. Clamping groove, 35. Threaded connector, 4. First mounting base, 5. Second mounting base. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0018] like Figure 1 This is a schematic diagram of the structure of this utility model, a quick-connect structure for an injection extension rod in an injection molding machine, including a driving component 1, a connecting block 2, and an extension rod 3. The driving component 1 is used for rotatable connection with the template, and the driving component 1 is a hydraulic cylinder. The extension rod 3 is used for rotatable connection with the piston rod. The connecting block 2 is located between the driving component 1 and the extension rod 3. The output end of the driving component 1 is connected to the end of the connecting block 2 away from the extension rod 3. Figure 4 , 5 As shown, a receiving groove 21 for accommodating the extension rod 3 is recessed on the end face of the connecting block 2 near the extension rod 3. A locking groove 22 extending circumferentially and a connecting groove 23 extending axially are formed on the inner wall of the receiving groove 21. The locking groove 22 occupies an angle of 90°. The end of the connecting groove 23 away from the extension rod 3 is connected to the locking groove 22. The end of the connecting groove 23 near the extension rod 3 extends axially to the end face of the connecting block 2 near the extension rod 3. A locking mechanism that matches the connecting groove 23 and the receiving groove 21 is protruding on the extension rod 3. The locking rod 31 is embedded in the locking groove 22 along the connecting groove 23. Through the cooperation of the locking rod 31, the locking groove 22 and the connecting groove 23, the locking rod 31 of the extension rod 3 is inserted into the connecting groove 23 axially and then rotated to lock. No tools are required, and the installation is convenient and quick. The circumferentially extended locking groove 22 evenly transmits the plasticizing torque to the connecting block, avoiding stress concentration in the threaded connection. The cooperation between the receiving groove 21 and the locking rod 31 forces axial / radial alignment and eliminates eccentric wear. The locking groove 22 converts the plasticizing torque into a surface contact load, improving the torsional resistance.

[0019] like Figure 2 , 4 As shown, the extension rod 3 includes an extension portion 32 arranged near the connecting block 2 and a mounting portion 33. The locking rod 31 is located on the extension portion 32. The mounting portion 33 has two clamping portions 34 that are spaced apart and protrude from one end near the extension portion 32. The adjacent surfaces of the two clamping portions 34 are provided with clamping grooves 341 for accommodating the extension portion 32. The two clamping portions 34 are connected by a threaded connector 35. The split extension rod 3 allows for the individual replacement of worn sections, reducing spare parts costs. The clamping grooves 341 and the threaded connector 35 provide rigid clamping force to ensure the strength of the split connection.

[0020] The quick-connect structure for the injection extension rod of the injection molding machine also includes a first mounting base 4, which is used to connect with the piston rod, and the mounting part 33 and the first mounting base 4 are rotatably connected.

[0021] The quick-connect structure of the injection extension rod of the injection molding machine also includes a second mounting base 5, which is used to connect with the template, and the drive component 1 and the first mounting base 4 are rotatably connected.

[0022] Installation process: Align the locking rod 31 of the extension rod 3 with the connecting groove 23 on the end face of the connecting block 2, and insert it axially until the bottom of the receiving groove 21; the driving component pushes the connecting block 2 to rotate, so that the locking rod 31 slides into the circumferential locking groove 22 along the connecting groove 23 to complete the mechanical interlock; if it is a split extension rod, use the threaded connector 35 to lock the two clamping parts 34 to fix the extension part 32; start the injection molding machine for low-speed testing, and confirm that there is no abnormal vibration or noise, then the installation is complete.

[0023] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An injection molding machine injection extension rod quick connect structure, characterized by, The assembly includes a drive component (1), a connecting block (2), and an extension rod (3). The drive component (1) is rotatably connected to the template, and the extension rod (3) is rotatably connected to the piston rod. The connecting block (2) is located between the drive component (1) and the extension rod (3). The output end of the drive component (1) is connected to the end of the connecting block (2) away from the extension rod (3). A receiving groove (21) for accommodating the extension rod (3) is recessed on the end face of the connecting block (2) near the extension rod (3). The inner wall is provided with a locking groove (22) extending circumferentially and a connecting groove (23) extending axially. The end of the connecting groove (23) away from the extension rod (3) is connected to the locking groove (22). The end of the connecting groove (23) near the extension rod (3) extends axially to the end face of the connecting block (2) near the extension rod (3). A locking rod (31) that matches the connecting groove (23) and the receiving groove (21) is protruding on the extension rod (3). The locking rod is embedded in the locking groove (22) along the connecting groove (23).

2. The quick plug structure of an injection extension rod of an injection molding machine according to claim 1, characterized in that: The extension rod (3) includes an extension portion (32) arranged near the connecting block (2) and a mounting portion (33). The locking rod (31) is located on the extension portion (32). The mounting portion (33) has two clamping portions (34) protruding from one end near the extension portion (32) and distributed at intervals. The adjacent surfaces of the two clamping portions (34) are provided with clamping grooves (341) for accommodating the extension portion (32). The two clamping portions (34) are connected by a threaded connector (35).

3. The quick connect structure of an injection extension rod of an injection molding machine according to claim 2, characterized in that: The quick-connect structure for the injection extension rod of the injection molding machine also includes a first mounting seat (4), which is used to connect with the piston rod. The mounting part (33) and the first mounting seat (4) are rotatably connected.

4. The quick connect structure of an injection extension rod of an injection molding machine according to claim 1, wherein: The quick-connect structure of the injection extension rod of the injection molding machine also includes a second mounting base (5), which is used to connect with the template, and the drive member (1) and the first mounting base (4) are rotatably connected.

5. The quick connect structure of an injection extension rod of an injection molding machine according to claim 1, wherein: The driving component (1) is a hydraulic cylinder.

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