Spring bolt assembly in core pulling structure of injection mold

Abstract

The utility model discloses a spring bolt assembly in a core-pulling structure of an injection mold, which relates to the technical field of injection molds, and comprises a lower mold base and an upper mold base, a core-pulling unit is arranged in the lower mold base, a locking mechanism is arranged in the lower mold base and is used for performing linkage locking with the core-pulling unit, and the upper mold base is connected with the lower mold base. The locking mechanism comprises a spring bolt unit which is arranged in the lower die base and comprises a mounting drawing box; a fixing unit; according to the disassembly and assembly unit, when an air cylinder operates to push a mounting plate and a linkage rod to move, the inclined face of an insertion block makes contact with the edge of an insertion groove, the insertion block drives a sliding column to move and extrudes a spring, and meanwhile when the air cylinder pulls the mounting plate and the linkage rod to move, the insertion block slides in a limiting groove and is inserted into the insertion groove; therefore, the linkage rod is moved and fixed to lock the ejection column, linkage between the locking mechanism and the core pulling unit is achieved, the operation process becomes simple, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, and particularly to a locking tongue assembly in a core-pulling structure of an injection mold. Background Art

[0002] Injection core-pulling, also known as core-pulling pins, refers to the part or mechanism that needs to extract the hollow or protruding part when removing the plastic part from the injection mold. This is an important process in injection molds, aiming to achieve the molding and removal of plastic parts with complex shapes.

[0003] Upon inquiry, the publication number: CN217670830U discloses a core-pulling structure for an injection mold, including a bottom plate. The upper surface of the bottom plate is fixedly connected with a plurality of support rods. One side of the support rod is movably connected with a support plate. The upper surface of the bottom plate is fixedly connected with a cylinder, and one end of the piston rod of the cylinder is fixed to the support plate. The upper surface of the support plate is fixedly connected with two movable templates. One side of the movable template is fixedly connected with a locking block, and the locking block is fixed to one of the movable templates. The upper surface of the support plate is fixedly connected with a core. This utility model can not only automatically perform core-pulling on the product through the cooperation of the inclined plate and the roller, improving the core-pulling efficiency of the device, but also quickly cool the processed workpiece through the cooling water in the water tank, improving the molding efficiency of the device. It can also make the inclined plate move more smoothly through the roller, improving the convenience of the device.

[0004] Based on the above prior art, the existing locking tongue assembly in the core-pulling structure of an injection mold still has the following problems. The locking tongue assembly in the traditional injection mold core-pulling structure used to rely on an external power source for driving to achieve locking, but this method has a complex operation process and reduces production efficiency. Therefore, the utility model provides a locking tongue assembly in the core-pulling structure of an injection mold. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a locking tongue assembly in the core-pulling structure of an injection mold, solving the following problems existing in the existing locking tongue assembly in the core-pulling structure of an injection mold. The locking tongue assembly in the traditional injection mold core-pulling structure used to rely on an external power source for driving to achieve locking, but this method has a complex operation process and reduces production efficiency.

[0006] To achieve the above objectives, the utility model is realized through the following technical solutions: A locking tongue assembly in the core-pulling structure of an injection mold includes a lower mold base and an upper mold base. A core-pulling unit is arranged inside the lower mold base. A locking mechanism is arranged inside the lower mold base for interlocking and locking with the core-pulling unit. The locking mechanism includes:

[0007] The tongue locking unit is arranged inside the lower die base and includes an installation cartridge. A rectangular groove and a T-shaped through groove are opened inside the installation cartridge. A sliding column is slidably installed inside the T-shaped through groove. One end of the sliding column is fixedly installed with a limiting disc. One end of the sliding column away from the limiting disc is fixedly installed with an insertion block, and one side of the insertion block is an inclined surface. A spring is sleeved on the surface of the sliding column. Three balls are rotatably installed at one end of the insertion block. A guiding block is fixedly installed on the top of the installation cartridge;

[0008] The fixing unit is arranged inside the installation cartridge and is used to prevent the position of the insertion block from shifting;

[0009] The disassembly and assembly unit is arranged on one side of the tongue locking unit and is used to realize the disassembly and assembly of the tongue locking unit.

[0010] Preferably, the fixing unit includes an orbital groove opened inside the installation cartridge. A stop block is slidably installed inside the orbital groove. One end of the stop block is fixedly installed with a pulling column. One end of the pulling column penetrates through the installation cartridge and is fixedly installed with a pulling block.

[0011] Preferably, the disassembly and assembly unit includes a guiding seat and a positioning block fixedly installed on one side of the lower die base. A clamping column is rotatably installed inside the installation cartridge. A nut is threadedly rotated at one end of the clamping column.

[0012] Preferably, one end of the installation cartridge is fixedly installed with a locking block, and the clamping column is slidably clamped inside the locking block and the positioning block.

[0013] Preferably, the core-pulling unit includes a cylinder fixedly installed on the right side of the lower die base. The output end of the cylinder is movably inserted inside the lower die base and is fixedly installed with a mounting plate. Linkage rods are fixedly installed on both the front and back sides of the mounting plate. Two sliding inclined seats are fixedly installed on the side of the linkage rod. A convex slider is fixedly installed at the bottom of the sliding inclined seat. An inclined groove is opened inside the sliding inclined seat, and a top column is slidably installed inside the inclined groove.

[0014] Preferably, two convex sliding grooves are opened inside the lower die base, and the convex slider is slidably adapted inside the convex sliding groove. A limiting groove and a slot are opened inside the linkage rod, and the insertion block is inserted inside the slot.

[0015] The present utility model provides a tongue locking assembly in a core-pulling structure of an injection mold. Compared with the prior art, it has the following beneficial effects:

[0016] (1). In the lock tongue assembly at the core-pulling structure of the injection mold, when the air cylinder operates to push the mounting plate and the linkage rod to move, the inclined surface of the insertion block contacts the edge of the insertion slot. The insertion block drives the sliding column to move, and the insertion block compresses the spring. At the same time, when the air cylinder pulls the mounting plate and the linkage rod to move, the insertion block slides inside the limit slot, and the insertion block inserts into the insertion slot, thereby realizing the movement and fixation of the linkage rod to lock the ejector pin, thus realizing the linkage between the locking mechanism and the core-pulling unit, making the operation process simple, and improving production efficiency.

[0017] (2). In the lock tongue assembly at the core-pulling structure of the injection mold, when the insertion block inserts into the insertion slot, the user pushes the pull block, and the pull block drives the pull column to move synchronously. The pull column drives the stop block to move synchronously. The stop block moves between the two limit disks to fix the positions of the limit disk and the sliding column, thereby fixing the position of the insertion block, thus preventing the position of the insertion block from shifting due to vibration during the operation of the lower mold base and the upper mold base. Description of the Drawings

[0018] Figure 1 is the left-side perspective structure diagram of the present utility model;

[0019] Figure 2 is the sectional perspective structure diagram of the present utility model;

[0020] Figure 3 is the partial sectional disassembled perspective structure diagram of the present utility model;

[0021] Figure 4 is the partial perspective structure diagram of the present utility model;

[0022] Figure 5 is the partial left-side perspective structure diagram of the locking mechanism of the present utility model;

[0023] Figure 6 is the sectional perspective structure diagram of the locking mechanism of the present utility model.

[0024] In the figure: 1 - lower mold base, 2 - upper mold base, 3 - locking mechanism, 31 - lock tongue unit, 311 - mounting cartridge, 312 - guide block, 313 - rectangular groove, 314 - T-shaped through groove, 315 - sliding column, 316 - limit disk, 317 - spring, 318 - insertion block, 319 - ball, 32 - fixing unit, 321 - track groove, 322 - stop block, 323 - pull column, 324 - pull block, 33 - disassembly and assembly unit, 331 - guide seat, 332 - clamping post, 333 - lock block, 334 - positioning block, 335 - nut, 4 - core-pulling unit, 41 - mounting plate, 42 - linkage rod, 43 - sliding inclined seat, 44 - convex slider, 45 - inclined groove, 46 - ejector pin, 47 - convex chute, 48 - air cylinder, 49 - limit slot, 410 - insertion slot. Detailed Embodiment

[0025] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0026] Please refer to Figures 1-6 , the present invention provides a technical solution:

[0027] A locking tongue assembly in a core-pulling structure of an injection mold, including a lower mold base 1 and an upper mold base 2. A core-pulling unit 4 is arranged inside the lower mold base 1, and a locking mechanism 3 is arranged inside the lower mold base 1 for linkage locking with the core-pulling unit 4. The locking mechanism 3 includes:

[0028] A locking tongue unit 31, arranged inside the lower mold base 1, including a mounting cartridge 311. A rectangular groove 313 and a T-shaped through groove 314 are formed inside the mounting cartridge 311. A sliding column 315 is slidably installed inside the T-shaped through groove 314. One end of the sliding column 315 is fixedly installed with a limiting disk 316, and the end of the sliding column 315 away from the limiting disk 316 is fixedly installed with an insertion block 318. One side of the insertion block 318 is an inclined surface. A spring 317 is sleeved on the surface of the sliding column 315. Three balls 319 are rotatably installed at one end of the insertion block 318. A guiding block 312 is fixedly installed on the top of the mounting cartridge 311;

[0029] A fixing unit 32, arranged inside the mounting cartridge 311 and used to prevent the position of the insertion block 318 from shifting;

[0030] A disassembly and assembly unit 33, arranged on one side of the locking tongue unit 31 and used to realize the disassembly and assembly of the locking tongue unit 31.

[0031] When the cylinder 48 operates to push the mounting plate 41 and the linkage rod 42 to move, the inclined surface of the insertion block 318 contacts the edge of the insertion slot 410. The insertion block 318 drives the sliding column 315 to move, and the insertion block 318 compresses the spring 317. At the same time, when the cylinder 48 pulls the mounting plate 41 and the linkage rod 42 to move, the insertion block 318 slides inside the limiting slot 49, and the insertion block 318 is inserted into the insertion slot 410, thereby realizing the movement and fixation of the linkage rod 42 to lock the ejector pin 46, thereby realizing the linkage between the locking mechanism 3 and the core-pulling unit 4, making the operation process simple, and thus improving the production efficiency.

[0032] In this embodiment, the fixing unit 32 includes an orbital groove 321 formed inside the mounting cartridge 311. A stopper 322 is slidably mounted inside the orbital groove 321. One end of the stopper 322 is fixedly mounted with a pull column 323, and one end of the pull column 323 penetrates through the mounting cartridge 311 and is fixedly mounted with a pull block 324.

[0033] When the insert block 318 is inserted into the interior of the slot 410, the user pushes the pull block 324. The pull block 324 drives the pull column 323 to move synchronously. The pull column 323 drives the stopper 322 to move synchronously. The stopper 322 moves between the two limit discs 316 to fix the positions of the limit disc 316 and the sliding column 315, thereby fixing the position of the insert block 318, and thus preventing the position of the insert block 318 from shifting due to vibration during the operation of the lower die base 1 and the upper die base 2.

[0034] In this embodiment, the disassembly and assembly unit 33 includes a guide seat 331 and a positioning block 334 fixedly mounted on one side of the lower die base 1. A clamping column 332 is rotatably mounted inside the mounting cartridge 311. One end of the clamping column 332 is threadedly rotated with a nut 335. One end of the mounting cartridge 311 is fixedly mounted with a locking block 333, and the clamping column 332 is slidably engaged inside the locking block 333 and the positioning block 334.

[0035] When repairing the locking mechanism 3, the user rotates the nut 335 and then rotates the clamping column 332. By pushing the mounting cartridge 311 through the locking block 333, the edge of the inclined groove of the insert block 318 contacts the edge of the limit groove 49, so that the insert block 318 is received into the interior of the mounting cartridge 311, and the insert block 318 is removed from the interior of the limit groove 49. Pulling out the locking mechanism 3 allows it to be repaired.

[0036] In this embodiment, the core-pulling unit 4 includes a cylinder 48 fixedly mounted on the right side of the lower die base 1. The output end of the cylinder 48 is movably inserted into the interior of the lower die base 1 and fixedly mounted with a mounting plate 41. Both the front and rear sides of the mounting plate 41 are fixedly mounted with linkage rods 42. Two sliding inclined seats 43 are fixedly mounted on the side of the linkage rod 42. A convex slider 44 is fixedly mounted at the bottom of the sliding inclined seat 43. An inclined groove 45 is formed inside the sliding inclined seat 43, and a top column 46 is slidably mounted inside the inclined groove 45. Two convex sliding grooves 47 are formed inside the lower die base 1, and the convex slider 44 is slidably fitted inside the convex sliding groove 47. A limit groove 49 and a slot 410 are formed inside the linkage rod 42, and the insert block 318 is inserted into the interior of the slot 410.

[0037] When the cylinder 48 operates, it pushes the mounting plate 41 and the linkage rods 42 to move. The two linkage rods 42 drive the four sliding inclined seats 43 and the convex sliders 44 to move synchronously. The top column 46 slides inside the inclined groove 45, causing the top column 46 to rise and push out the finished product inside the lower die base 1.

[0038] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0039] During operation, first, the cylinder 48 operates to push the mounting plate 41 and the linkage rod 42 to move. The two linkage rods 42 drive the four sliding inclined seats 43 and the convex sliders 44 to move synchronously. The ejector pin 46 slides inside the inclined groove 45, causing the ejector pin 46 to rise and push out the finished product inside the lower die holder 1. At the same time, the inclined surface of the insert block 318 contacts the edge of the slot 410, and the insert block 318 drives the sliding column 315 to move. The insert block 318 compresses the spring 317. When the cylinder 48 pulls the mounting plate 41 and the linkage rod 42 to move, the insert block 318 slides inside the limiting groove 49, and the insert block 318 inserts into the slot 410 to fix the movement of the linkage rod 42 and lock the ejector pin 46. When the insert block 318 inserts into the slot 410, the user pushes the pull block 324, and the pull block 324 drives the pull column 323 to move synchronously. The pull column 323 drives the stopper 322 to move synchronously. The stopper 322 moves between the two limiting disks 316 to fix the positions of the limiting disk 316 and the sliding column 315. When repairing the locking mechanism 3, the user rotates the nut 335, and then rotates the clamping column 332. By pushing the mounting cartridge 311 through the locking block 333, when the inclined groove of the insert block 318 contacts the edge of the limiting groove 49, the insert block 318 is received into the mounting cartridge 311, causing the insert block 318 to move out of the limiting groove 49, and the locking mechanism 3 can be pulled out for repair.

[0040] It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0041] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A locking tongue assembly in the core-pulling structure of an injection mold, comprising a lower mold base (1) and an upper mold base (2), characterized in that: The inside of the lower die base (1) is provided with a core-pulling unit (4), and the inside of the lower die base (1) is provided with a locking mechanism (3) for interlocking and locking with the core-pulling unit (4). The locking mechanism (3) includes: A locking tongue unit (31) is arranged inside the lower die base (1), including a mounting cartridge (311). A rectangular groove (313) and a T-shaped through groove (314) are opened inside the mounting cartridge (311). A sliding column (315) is slidably mounted inside the T-shaped through groove (314). One end of the sliding column (315) is fixedly mounted with a limit disk (316). The end of the sliding column (315) far from the limit disk (316) is fixedly mounted with an insertion block (318), and one side of the insertion block (318) is beveled. A spring (317) is sleeved on the surface of the sliding column (315). Three balls (319) are rotatably mounted at one end of the insertion block (318). A guide block (312) is fixedly mounted on the top of the mounting cartridge (311); A fixing unit (32) is arranged inside the mounting cartridge (311) and is used to prevent the position of the insertion block (318) from shifting; A disassembly and assembly unit (33) is arranged on one side of the locking tongue unit (31) and is used to realize the disassembly and assembly of the locking tongue unit (31).

2. The locking tongue assembly in the core-pulling structure of the injection mold according to claim 1, characterized in that: The fixing unit (32) includes a track groove (321) opened inside the mounting cartridge (311). A stop block (322) is slidably mounted inside the track groove (321). One end of the stop block (322) is fixedly mounted with a pull column (323). One end of the pull column (323) penetrates through the mounting cartridge (311) and is fixedly mounted with a pull block (324).

3. The locking tongue assembly in the core-pulling structure of the injection mold according to claim 1, characterized in that: The disassembly and assembly unit (33) includes a guide seat (331) and a positioning block (334) fixedly mounted on one side of the lower die base (1). A clamping column (332) is rotatably mounted inside the mounting cartridge (311). A nut (335) is threadedly rotated at one end of the clamping column (332).

4. The locking tongue assembly in the core-pulling structure of the injection mold according to claim 3, characterized in that: One end of the mounting cartridge (311) is fixedly mounted with a locking block (333), and the clamping column (332) is slidably clamped inside the locking block (333) and the positioning block (334).

5. The lock tongue assembly in the core-pulling structure of the injection mold according to claim 1, characterized in that: The core-pulling unit (4) includes a cylinder (48) fixedly mounted on the right side of the lower die base (1). The output end of the cylinder (48) is movably inserted into the inside of the lower die base (1) and is fixedly mounted with a mounting plate (41). Linkage rods (42) are fixedly mounted on both the front and rear sides of the mounting plate (41). Two sliding inclined seats (43) are fixedly mounted on the side surface of the linkage rod (42). A convex slider (44) is fixedly mounted at the bottom of the sliding inclined seat (43). An inclined groove (45) is opened inside the sliding inclined seat (43), and a top column (46) is slidably mounted inside the inclined groove (45).

6. The tongue locking component in the core-pulling structure of an injection mold according to claim 5, characterized in that: Two convex sliding grooves (47) are opened inside the lower die base (1), and the convex slider (44) is slidably adapted inside the convex sliding groove (47). A limit groove (49) and a slot (410) are opened inside the linkage rod (42), and the insertion block (318) is inserted into the slot (410).

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