Thread driving type tunnel drawing and sliding combined mechanism

Abstract

The utility model discloses a thread driving type tunnel drawing and sliding combined mechanism which comprises a plurality of tunnel sliding blocks, a plurality of thread driving type tunnel drawing and sliding combined mechanisms, a plurality of thread driving type tunnel drawing and sliding combined mechanisms and a plurality of thread driving type tunnel drawing and sliding combined mechanisms, wherein the bottoms of the tunnel sliding blocks are slidably arranged in tunnel holes of a rear mold and core-pulling mold cores at the tops extend into a casting mold cavity of a front mold; the threaded rod is in threaded connection with the tunnel sliding block and is rotationally arranged at the bottom of the tunnel hole; the first driving mechanism is used for driving the threaded rod to operate; and the top plate is arranged in the top plate hole of the rear mold through lifting driving of a second driving mechanism, and the top plate and the tunnel sliding blocks are spliced to form a mold core for forming the inner wall of a product. The tunnel sliding blocks and the top plate are spliced to form the rear mold core used for forming the inner wall, with the protruding structure, of the product, the driving mechanism drives the top plate and the tunnel sliding blocks to move in a segmented mode, all the tunnel sliding blocks move synchronously, and compared with a common mold structure, rapid and stable shaping of the mold core and lossless forming and demolding of the product can be guaranteed; and the mold use and product processing and forming efficiency and quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a thread-driven tunnel drawing and sliding combined mechanism. Background Art

[0002] The demoulding method for products on the mold generally adopts the axial and lateral radial core pulling of the product. Some products have concave and convex structures on the surface or are based on usage requirements, so forced demoulding is adopted. This causes quality problems such as wear and deformation in the local part of the product, and cannot meet the molding standards of products with high molding quality requirements. Especially for the molding of concave and convex structures inside the product, the direct forced core pulling demoulding method of common molds causes large quality loss of the product and mold, and low processing efficiency. Utility Model Content

[0003] The purpose of the utility model is to solve the problem that for products with concave-convex structures on the surface or products based on usage requirements, common mold structures are prone to cause quality problems such as local wear and deformation of products, and cannot meet the molding standards of products with high molding quality requirements. In particular, for the molding of concave-convex structures inside products, the direct strong core-pulling demolding method of common molds causes large quality loss of products and molds, and low processing efficiency. A thread-driven tunnel-drawing and sliding combination mechanism is provided.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a thread-driven tunnel extraction and sliding combination mechanism, comprising:

[0005] A plurality of tunnel sliders, the bottom of which is slidably arranged in the tunnel hole of the rear mold, and the top core-pulling mold core extends into the casting cavity of the front mold, and the core-pulling mold core is provided with a concave structure corresponding to the convex structure on the surface of the product;

[0006] a threaded rod, which is screwed onto the tunnel slider and rotatably disposed at the bottom of the tunnel hole;

[0007] A first driving mechanism, used for driving the threaded rod to operate;

[0008] The top plate is driven to rise and fall by the second driving mechanism and is arranged in the top plate hole of the rear mold. The top plate and a plurality of tunnel sliders are assembled to form a mold core for molding the inner wall of the product.

[0009] As a further description of the above technical solution:

[0010] The tunnel slider is a Z-shaped slider.

[0011] As a further description of the above technical solution:

[0012] The tunnel sliders are arranged at equal intervals along the circumference of the top plate. The cross section of the top plate is in a straight line or star shape. The outer edges of the top plate are correspondingly spliced ​​between adjacent tunnel sliders.

[0013] As a further description of the above technical solution:

[0014] The protruding structure is a disconnected block or internal thread, and the block or internal thread is provided with an escape opening at the outer edge of the top plate.

[0015] As a further description of the above technical solution:

[0016] The first driving mechanism is a rotationally driven air cylinder, a hydraulic cylinder or a motor, and the second driving mechanism is a telescopically driven air cylinder, a hydraulic cylinder or a motor.

[0017] As a further description of the above technical solution:

[0018] A driving bevel gear is provided at the output end of the first driving mechanism, and a plurality of driven bevel gears at the ends of the threaded rods are meshedly connected to the driving bevel gear.

[0019] In summary, due to the adoption of the above technical solution, the present invention has the following advantages compared with the prior art:

[0020] Beneficial effects:

[0021] The utility model forms a rear mold core for forming the inner wall of the product with a convex structure by combining a plurality of tunnel sliders with a top plate of a straight or star-shaped cross section. The driving mechanism drives the top plate and the tunnel sliders to move in sections. The tunnel sliders are synchronously pulled out of the mold for demoulding and supported outward for shaping, thereby ensuring that the mold core is quickly and stably shaped and the product is non-destructively formed and demoulded, thereby improving the efficiency and quality of mold use and product processing and molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a screw-driven tunnel-slide combination mechanism corresponding to the use state of the mold when the mold is closed. Figure 1 .

[0024] Figure 2 It is a screw-driven tunnel-sliding combination mechanism corresponding to the use state of the mold when the mold is opened. Figure 2 .

[0025] Legend:

[0026] 1. Front mold; 11. Mold cavity; 2. Back mold; 21. Tunnel hole; 22. Top plate hole; 3. Tunnel slider; 31. Core-pulling mold core; 32. Concave structure; 4. Threaded rod; 41. Driven bevel gear; 5. First drive mechanism; 51. Drive bevel gear; 6. Top plate; 61. Second drive mechanism; 100. Product; 110. Raised structure. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0029] See also Figure 1-2 The utility model provides a technical solution: a thread-driven tunnel extraction and sliding combination mechanism, comprising:

[0030] A plurality of tunnel sliders 3, the bottom of which is slidably arranged in the tunnel hole 21 of the rear mold 2, and the top core-pulling mold core 31 extends into the mold cavity 11 of the front mold 1, and the core-pulling mold core 31 is provided with a concave structure 32 corresponding to the convex structure 110 on the surface of the product 100;

[0031] a threaded rod 4, which is screwed onto the tunnel slider 3 and rotatably disposed at the bottom of the tunnel hole 21;

[0032] A first driving mechanism 5 is used to drive the threaded rod 4 to operate;

[0033] The top plate 6 is driven to rise and fall by a second driving mechanism 61 and is set in the top plate hole 22 of the rear mold 2. The top plate 6 and a plurality of tunnel sliders 3 are assembled to form a mold core for forming the inner wall of the product 100.

[0034] The tunnel sliders 3 are arranged at equal intervals along the circumference of the top plate 6. The cross-section of the top plate 6 is in a straight line or star shape. The outer edges of the top plate 6 are correspondingly spliced ​​between adjacent tunnel sliders 3 to ensure lossless molding and core pulling and demolding of products with internal convex structures.

[0035] The tunnel slider 3 is a Z-shaped slider, so that it is synchronously and stably driven by the threaded rods 4 and the first driving mechanism 5, and has sufficient internal withdrawal stroke.

[0036] The protruding structure 110 is a disconnected block or internal thread, and the block or internal thread is provided with an escape opening at the outer edge of the top plate 6 to improve the molding quality.

[0037] The first driving mechanism 5 is a rotary driving cylinder, hydraulic cylinder or motor, and the second driving mechanism 61 is a telescopic driving cylinder, hydraulic cylinder or motor, which ensures stable driving of the core-pulling and demoulding slider.

[0038] A driving bevel gear 51 is provided at the output end of the first driving mechanism 5, and the driven bevel gears 41 at the ends of several threaded rods 4 are meshed and connected to the driving bevel gear 51, ensuring a stable multi-to-one transmission between the linkage structure threaded rods 4 and the driving structure first driving mechanism 5.

[0039] The working principle of a thread-driven tunnel-sliding combination mechanism of this embodiment includes: when closing the mold, the first driving mechanism 5 drives the bevel gear transmission structure to operate, and the threaded rod 4 rotates synchronously. Based on the stroke amount set by the precision controller, the tunnel slider 3 limited by the tunnel hole 21 is driven to move outward and open, and the second driving mechanism 61 drives the top plate 6 to move out of the top plate hole 22 and assemble with the tunnel slider 3 to form a mold core corresponding to the inner wall of the product 100; the front mold 1 is closed on the rear mold 2, and the product molding process such as injection molding can be carried out. Figure 1 When the mold is opened, the top plate 6 is driven to be retracted into the top plate hole 22, and the core is pulled out of the tunnel slider 3 to demould, so that the bottom of the product 100 is demoulded. After that, the front mold 1 is opened, and the product 100 can be taken out to form the next product. Figure 2 shown.

[0040] In summary, due to the adoption of the above technical solution, the thread-driven tunnel extraction and sliding combination mechanism of this embodiment has the following beneficial effects compared with the prior art:

[0041] The utility model forms a rear mold core for forming the inner wall of the product with a convex structure by combining a plurality of tunnel sliders with a top plate of a straight or star-shaped cross section. The driving mechanism drives the top plate and the tunnel sliders to move in sections. The tunnel sliders are synchronously pulled out of the mold for demoulding and supported outward for shaping, thereby ensuring that the mold core is quickly and stably shaped and the product is non-destructively formed and demoulded, thereby improving the efficiency and quality of mold use and product processing and molding.

[0042] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A screw-driven tunnel sliding combination mechanism, characterized in that: include: A plurality of tunnel sliders, the bottom of which is slidably arranged in the tunnel hole of the rear mold, and the top core-pulling mold core extends into the casting cavity of the front mold, and the core-pulling mold core is provided with a concave structure corresponding to the convex structure on the surface of the product; a threaded rod, which is screwed onto the tunnel slider and rotatably disposed at the bottom of the tunnel hole; A first driving mechanism, used for driving the threaded rod to operate; The top plate is driven to rise and fall by the second driving mechanism and is arranged in the top plate hole of the rear mold. The top plate and a plurality of tunnel sliders are assembled to form a mold core for molding the inner wall of the product.

2. A screw-driven tunnel extraction and sliding combination mechanism according to claim 1, characterized in that: The tunnel slider is a Z-shaped slider.

3. The thread-driven tunnel extraction and sliding combination mechanism according to claim 1, characterized in that: The tunnel sliders are arranged at equal intervals along the circumference of the top plate. The cross section of the top plate is in a straight line or star shape. The outer edges of the top plate are correspondingly spliced ​​between adjacent tunnel sliders.

4. The thread-driven tunnel extraction and sliding combination mechanism according to claim 3, characterized in that: The protruding structure is a disconnected block or internal thread, and the block or internal thread is provided with an escape opening at the outer edge of the top plate.

5. The thread-driven tunnel extraction and sliding combination mechanism according to claim 1, characterized in that: The first driving mechanism is a rotationally driven air cylinder, a hydraulic cylinder or a motor, and the second driving mechanism is a telescopically driven air cylinder, a hydraulic cylinder or a motor.

6. The thread-driven tunnel extraction and sliding combination mechanism according to claim 1, characterized in that: A driving bevel gear is provided at the output end of the first driving mechanism, and a plurality of driven bevel gears at the ends of the threaded rods are meshedly connected to the driving bevel gear.

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