A push plate type demolding mechanism with a guiding function and an injection mold

Abstract

The utility model relates to a push -type stripping mechanism and injection mold with the function of guiding have, push -type stripping mechanism with the function of guiding includes push -plate and core, and push -plate has the first board surface and the second board surface at opposite two sides, is provided with the perforation from the second board surface to the first board surface, the core is worn in the perforation, one end of the core is worn out the first board surface to be used as the forming end of injection molding, still includes the guide ring, the guide ring is fixed in the second board surface in detachable mode to be in the outer end position of push -plate, the guide ring is sleeved in the outer periphery of core and is connected with the core slidingly, the utility model discloses the sliding connection cooperation of guide ring and core to the push -out stroke of push -plate is guided, avoids the problem that push -plate bruises the forming end of core, improves the service life of core and push -plate.

Description

Technical Field

[0001] This utility model relates to an injection mold, specifically a push-plate type demolding mechanism. Background Technology

[0002] Ejector-type demolding is a common method for demolding injection molds. In a current ejector-type demolding mechanism, the core extends through the ejector plate, and the end of the core that protrudes from the ejector plate serves as the molding end (punch) for injection molding. After long-term use, due to wear of parts, decreased movement accuracy of the ejector plate, or decreased assembly accuracy of the mold, the ejector plate may tilt towards the molding part of the core, causing friction between the ejector plate and the molding end of the core when ejecting. This not only damages the opening of the ejector plate but also scratches the molding end of the core, resulting in burrs on the product. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes a push-plate type demolding mechanism with guiding function and an injection mold having the push-plate type demolding mechanism.

[0004] This utility model is achieved using the following technical solution:

[0005] This utility model proposes a push-plate type demolding mechanism with guiding function, including a push plate and a core. The push plate has a first plate surface and a second plate surface on opposite sides. A through hole is provided from the second plate surface toward the first plate surface. The core passes through the through hole. One end of the core protrudes from the first plate surface to serve as a molding end for injection molding. The mechanism also includes a guide ring. The guide ring is detachably fixed to the second plate surface. The guide ring is sleeved on the outer periphery of the core and slidably connected and engaged with the core.

[0006] Preferably, the second plate surface is provided with a mounting groove, which is a stepped groove surrounding the perforation, and the guide ring is fixedly installed in the mounting groove to sink into the second plate surface.

[0007] Preferably, the guide ring is fixedly installed in the mounting groove by a threaded connection.

[0008] Preferably, the mounting groove is square, and the guide ring includes two horizontally parallel first sides and two vertically parallel second sides. The first sides are fixed to the mounting groove by screws, and the first sides press and fix the second sides into the mounting groove.

[0009] Preferably, the first side and the second side have the same thickness, both the first side and the second side have a "T" shaped structure, and the first side and the second side are connected to each other with missing corners to form a guide ring with uniform thickness.

[0010] Preferably, the guide ring is an integral ring structure.

[0011] Based on the aforementioned push-plate type demolding mechanism with guiding function, this embodiment also proposes an injection mold that includes the aforementioned push-plate type demolding mechanism with guiding function.

[0012] This invention offers the following advantages: The sliding connection between the guide ring and the core guides the push plate's ejection stroke, preventing the push plate from tilting towards the core's forming end and avoiding damage to this end. Because the guide ring is located on a second plate surface opposite to the core's forming end, it does not wear against the forming end. This ensures the lifespan of the core's end portion. Furthermore, since the guide ring is detachable, it can be replaced if severely worn, further extending the push plate's lifespan. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a push-plate demolding mechanism with guiding function in the embodiment;

[0014] Figure 2 This is a schematic diagram of the push plate and the core in the embodiment;

[0015] Figure 3 This is a schematic diagram of the push plate in the embodiment. Detailed Implementation

[0016] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0017] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0018] See Figures 1-3 As shown, in a preferred embodiment of this utility model, a push-plate type demolding mechanism with guiding function is provided, including a push plate 1 and a core 2. The push plate 1 has a first plate surface 11 and a second plate surface 12 on opposite sides. A through hole 4 is provided from the second plate surface 12 toward the first plate surface 11. The core 2 passes through the through hole 4, and the end 21 of the core 2 protruding from the first plate surface 11 serves as a molding end (punch) for injection molding. Figure 1The push plate 1 has an ejection stroke in the M direction, through which the molded product is ejected from the core 2, achieving demolding. A guide ring 3 is provided on the second plate surface 12. The guide ring 3 is detachably fixed to the second plate surface 12, that is, the guide ring 3 is detachably fixed to the other end plate surface of the push plate 1 opposite to the end 21 of the core 2. The guide ring 3 is sleeved on the outer periphery of the core 2 and slidably connected with the core 2. The sliding connection between the guide ring 3 and the core 2 guides the ejection stroke of the push plate 1, preventing the push plate 1 from tilting towards the end 21 and avoiding damage to the end 21. Because the guide ring 3 is located on the second plate surface 12 opposite to the end 21, the guide ring 3 will not wear against the end 21. In this way, the service life of the end 21, which is the core part of the core 2, is guaranteed. At the same time, since the guide ring 3 is detachable, if the guide ring 3 is severely worn, it can be replaced, thus guaranteeing the service life of the push plate 1. The guide ring 3 is set on the second plate surface 12, located at the outer end of the push plate 1, which also facilitates its disassembly and assembly.

[0019] The guide ring 3 can be made of mold steel and electroplated on the surface to improve its wear resistance.

[0020] In this embodiment, the second plate surface 12 is provided with a mounting groove 5, which is a stepped groove surrounding the through hole 4. The guide ring 3 is fixedly installed in the mounting groove 5 so as to be recessed into the second plate surface 12. That is, the mounting groove 5 forms a recess, allowing the guide ring 3 to be flush with the second plate surface 12. In this embodiment, the guide ring 3 is fixedly installed in the mounting groove 5 by a threaded connection, which can take into account both stability and ease of disassembly.

[0021] The guide ring 3 can be a single, integrated ring structure, or it can be composed of multiple parts joined together. In this embodiment, the mounting groove 5 is square, and the guide ring 3 includes two horizontally parallel first side edges 31 and two vertically parallel second side edges 32. Both the first side edges 31 and the second side edges 32 are strip-shaped structures. The first side edges 31 are fixed to the mounting groove 5 by screws, and the first side edges 31 press and fix the second side edges 32 within the mounting groove 5. Disassembling the guide ring 3 into multiple strip-shaped, splicable side edges is more conducive to the disassembly and installation of the guide ring 3. Furthermore, using the first side edges 31 to press and fix the second side edges 32 within the mounting groove 5 reduces the number of screws required, requiring only the first side plate 31 to be threaded and fixed.

[0022] In this embodiment, the first side 31 and the second side 32 have the same thickness. Both the first side 31 and the second side 32 have a "T" shaped structure. The first side 31 and the second side 32 are connected to each other with missing corners to form a guide ring 3 with uniform thickness, which improves the integrity of the guide ring 3, reduces the wobbling gap between the first side 31 and the second side 32, and allows the guide ring 3 to be installed more stably in the mounting groove 5.

[0023] Based on the aforementioned push-plate type demolding mechanism with guiding function, this embodiment also proposes an injection mold that includes the aforementioned push-plate type demolding mechanism with guiding function and has the same technical effect as the same structure.

[0024] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that any changes in form and detail made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims fall within the protection scope of the present invention.

Claims

1. A push-plate type demolding mechanism with guiding function, comprising a push plate and a core, the push plate having a first plate surface and a second plate surface on opposite sides, a through hole provided from the second plate surface toward the first plate surface, the core passing through the through hole, one end of the core protruding from the first plate surface to serve as a molding end for injection molding, characterized in that: It also includes a guide ring, which is detachably fixed to the second plate surface and located at the outer end of the push plate. The guide ring is sleeved on the outer periphery of the core and slidably connected with the core.

2. The push-plate type demolding mechanism with guiding function according to claim 1, characterized in that: The second plate surface is provided with a mounting groove, which is a stepped groove surrounding the perforation, and the guide ring is fixedly installed in the mounting groove to sink into the second plate surface.

3. The push-plate type demolding mechanism with guiding function according to claim 2, characterized in that: The guide ring is fixedly installed in the mounting groove by a threaded connection.

4. The push-plate type demolding mechanism with guiding function according to claim 2, characterized in that: The mounting groove is square, and the guide ring includes two horizontally parallel first sides and two vertically parallel second sides. The first sides are fixed to the mounting groove by screws, and the first sides press and fix the second sides into the mounting groove.

5. The push-plate type demolding mechanism with guiding function according to claim 4, characterized in that: The first and second sides have the same thickness. Both the first and second sides are T-shaped structures. The first and second sides are connected to each other with missing corners to form a guide ring of uniform thickness.

6. The push-plate type demolding mechanism with guiding function according to claim 1, characterized in that: The guide ring is an integral ring structure.

7. An injection mold, characterized in that: Includes the push-plate type demolding mechanism with guiding function as described in any one of claims 1-6.

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