Ejection mold with four sliding blocks and special-shaped ejector pins

Abstract

The utility model discloses a four-sliding-block special-shaped ejector pin ejection mold, and relates to the technical field of ejection molds. The ejection mold with the four sliding blocks and the special-shaped ejector pins comprises a lower mold body, and an injection molding cavity is formed in the top of the lower mold body; and the ejection assembly comprises square cavities formed in the lower die body and rectangular openings formed in the inner walls of the four square cavities correspondingly, and sliding blocks are arranged on the inner walls of the four rectangular openings in a sliding mode. According to the utility model, the ejection assembly is arranged, so that when the mold demolds a product in the injection molding cavity, the rotating block can be rotated to drive the ejection rod to eject out the ejection disc and the circular opening in the inner bottom wall of the injection molding cavity, thereby achieving the purpose of automatically and quickly ejecting out the product, and driving the ejection rod to move upwards; the purpose of completely ejecting the product out of the injection molding cavity can be achieved, it is guaranteed that the product is fully ejected out, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of ejector moulds, in particular to an ejector mould with four slide blocks and special-shaped ejector pins. Background Art

[0002] A mold is a tool used to make molded objects. This tool is composed of various parts, and different molds are composed of different parts. The existing patent is a four-slider special-shaped ejector mold, patent announcement number CN214188264U, which includes a bottom plate, a plurality of limit blocks are symmetrically arranged on the bottom plate, and the middle parts of the plurality of limit blocks form a cross-shaped channel. An injection channel connected to the cavity is arranged at the gap between the first mold core and the second mold core; the material is injected into the cavity from the injection channel, and the mold is opened when the material is cooled and formed. When the mold is opened, the third mold core and the fourth mold core are separated first, and then the first mold core and the second mold core are separated. A fixture is arranged on the top of the ejector seat. The ejector pin can eject the molded product along the direction of the guide shaft under the action of the ejector seat. The impact between the mold ejector pin and the molded product is small, and the product is not easily damaged. The structure of the molded product is complete, and more complex molds can be prepared, which is convenient for producing a variety of molds.

[0003] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: during the actual use of the ejector mold, when the ejector pin ejects the molded product, sliding friction and collision will occur between the ejector pin and the product, thereby causing scratches on the surface of the product and affecting the quality of the product.

[0004] Therefore, we proposed a four-slide special-shaped ejector pin ejector mold to solve the above problems. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides an ejection mold with four slide blocks and special-shaped ejector pins, which solves the problem in the prior art that the product is easily damaged during the ejection process.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a four-slider special-shaped ejector mold, comprising:

[0007] A lower mold body, wherein an injection molding cavity is formed on the top of the lower mold body;

[0008] An ejection assembly is used to eject the finished product inside the injection molding cavity. The ejection assembly includes a square cavity opened inside the lower mold body, and rectangular openings respectively opened on the inner walls of the four square cavities. The inner walls of the four rectangular openings are slidably provided with sliding blocks. The inner top wall of the square cavity is provided with four circular openings corresponding to the four sliding blocks in a circular array, and the inner walls of the four circular openings are slidably provided with a top plate. The upper surface of the sliding block is provided with a sealing cavity, and the inner wall of the sealing cavity is slidably provided with a sealing piston plate. The upper surface of the sealing piston plate is fixed with a rectangular block. The upper surface of the rectangular block is rotatably provided with a push rod, and the top end of the push rod is rotatably connected to the lower surface of the top plate. The lower surface of the lower mold body is fixed with a square cylinder extending into the square cavity, and the four inner side walls of the square cylinder are provided with threaded columns extending into the square cavity. The surfaces of the four sliding blocks are provided with cylindrical thread grooves respectively threadedly connected to the outer surfaces of the four threaded columns, and the outer surface of the square cylinder is provided with a rotating block for rotating the four threaded columns.

[0009] Preferably, the cross-sectional shape of the top plate is T-shaped, and the outer surface of the top plate is covered with a rubber sealing sleeve.

[0010] Preferably, a rotating frame is fixedly provided on the upper surface of the rectangular block and the lower surface of the top plate, a rotating shaft is rotatably provided on the inner wall of the rotating frame, and both ends of the top rod are fixedly connected to the rotating shaft surfaces of the inner walls of the two rotating frames respectively.

[0011] Preferably, a rotating rod is rotatably provided on the inner bottom wall of the square tube, and a first bevel gear is fixedly provided on the top end of the rotating rod, and second bevel gears meshing with the first bevel gear are fixedly provided on the ends of the four threaded columns.

[0012] Preferably, the inner side wall of the square tube is rotatably provided with an extension rod extending to the outer surface of the square tube, the rotating block is fixed at the end of the extension rod, and the other end of the extension rod and the surface of the rotating rod are fixed with mutually meshing bevel gears.

[0013] Preferably, a mounting block is fixedly provided on the upper surface of the sliding block, and a push-type air pump is fixedly provided on the side surface of the mounting block, and a pressing end of the push-type air pump is fixedly connected to the inner wall of the square cavity.

[0014] Preferably, the air inlet end and the air outlet end of the push-type air pump are respectively provided with an air inlet one-way valve and an air outlet one-way valve, and the air outlet end of the push-type air pump is provided with an inflation tube extending to the top of the sealed cavity, and the inner bottom wall of the sealed cavity is fixedly provided with a return spring, and the top end of the return spring is fixedly connected to the lower surface of the sealing piston plate. Beneficial Effects

[0015] The utility model provides a four-slider special-shaped ejector pin ejection mold. Compared with the prior art, it has the following beneficial effects:

[0016] The four-slider special-shaped ejector mold is provided with an ejector assembly, so that when the mold demoulds the product in the injection molding cavity, the rotating block can be rotated to drive the ejector rod to eject the ejector plate and the circular opening of the bottom wall of the injection molding cavity, thereby achieving the purpose of automatically and quickly ejecting the product, and can drive the ejector rod to move upward, so as to achieve the purpose of completely ejecting the product from the injection molding cavity, thereby ensuring that the product is fully ejected, and having strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0019] Figure 3 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0020] Figure 4 For this utility model Figure 2 Enlarged structural diagram at B in the middle.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of four sliding blocks of the utility model.

[0022] In the figure:

[0023] 100. Lower mold body;

[0024] 200, injection molding cavity;

[0025] 300, ejection assembly; 301, square cavity; 302, sliding block; 303, ejector plate; 304, sealing cavity; 305, sealing piston plate; 306, rectangular block; 307, ejector rod; 308, square cylinder; 309, threaded column; 3010, cylindrical thread groove; 3011, rotating block; 3012, rotating frame; 3013, rotating shaft; 3014, rotating rod; 3015, first bevel gear; 3016, second bevel gear; 3017, extension rod; 3018, bevel gear; 3019, push-type air pump; 3020, air filling tube; 3021, return spring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0027] See also Figure 1-5 The utility model provides a technical solution: a four-slider special-shaped ejector pin ejector mold, comprising:

[0028] A lower mold body 100, the top of which is provided with an injection molding cavity 200;

[0029] The ejector assembly 300 is used to eject the finished product inside the injection molding cavity 200. The ejector assembly 300 includes a square cavity 301 opened inside the lower mold body 100, and rectangular openings respectively opened on the inner walls of the four square cavities 301. The inner walls of the four rectangular openings are slidably provided with sliding blocks 302. The inner top wall of the square cavity 301 is provided with four circular openings corresponding to the four sliding blocks 302 in a circular array, and the inner walls of the four circular openings are slidably provided with top plates 303. The cross-sectional shape of the top plate 303 is T-shaped, and the outer surface of the top plate 303 is provided with a rubber sealing sleeve, which can effectively seal the circular opening.

[0030] A sealing cavity 304 is provided on the upper surface of the sliding block 302, and a sealing piston plate 305 is slidably provided on the inner wall of the sealing cavity 304, a rectangular block 306 is fixedly provided on the upper surface of the sealing piston plate 305, a push rod 307 is rotatably provided on the upper surface of the rectangular block 306, and the top end of the push rod 307 is rotatably connected to the lower surface of the top plate 303, a rotating frame 3012 is fixedly provided on the upper surface of the rectangular block 306 and the lower surface of the top plate 303, a rotating frame 3012 is rotatably provided on the inner wall of the rotating frame 3012, and two ends of the push rod 307 are respectively fixedly connected to the surfaces of the rotating shafts 3013 on the inner walls of the two rotating frames 3012, so that the push rod 307 can be driven to push the top plate 303 through the movement of the sliding block 302.

[0031] A square cylinder 308 extending into the square cavity 301 is fixedly provided on the lower surface of the lower mold body 100, and the four inner side walls of the square cylinder 308 are provided with threaded columns 309 extending into the square cavity 301, and the surfaces of the four sliding blocks 302 are provided with cylindrical thread grooves 3010 respectively threadedly connected to the outer surfaces of the four threaded columns 309, and the outer surface of the square cylinder 308 is provided with a rotating block 3011 for rotating the four threaded columns 309.

[0032] A rotating rod 3014 is rotatably provided on the inner bottom wall of the square tube 308, and a first bevel gear 3015 is fixedly provided on the top of the rotating rod 3014. The ends of the four threaded columns 309 are fixedly provided with second bevel gears 3016 that mesh with the first bevel gear 3015. The rotation of the rotating rod 3014 can drive the four threaded columns 309 to rotate simultaneously.

[0033] The inner wall of the square tube 308 is rotatably provided with an extension rod 3017 extending to the outer surface of the square tube 308, and the rotating block 3011 is fixed to the end of the extension rod 3017, and the other end of the extension rod 3017 and the surface of the rotating rod 3014 are fixed with mutually meshing bevel gears 3018, which can drive the rotating rod 3014 to rotate by rotating the rotating block 3011.

[0034] In this embodiment, by providing an ejection assembly 300, when the mold is demolding the product in the injection molding cavity 200, the rotating block 3011 can be rotated to drive the ejector rod 307 to eject the ejector plate 303 from the circular opening of the bottom wall of the injection molding cavity 200, thereby achieving the purpose of automatically and quickly ejecting the product. In addition, during the ejection process, the ejector rod 307 will not generate friction and collision with the surface of the product, thereby effectively achieving the purpose of not causing damage to the product during the ejection process and ensuring product quality. Example

[0035] On the basis of the first embodiment, and different from the first embodiment,

[0036] A mounting block is fixedly provided on the upper surface of the sliding block 302 , and a press-type air pump 3019 is fixedly provided on the side surface of the mounting block. The pressing end of the press-type air pump 3019 is fixedly connected to the inner wall of the square cavity 301 .

[0037] The air inlet end and the air outlet end of the push-type air pump 3019 are respectively provided with an air inlet one-way valve and an air outlet one-way valve, and the air outlet end of the push-type air pump 3019 is provided with an air inflation tube 3020 extending to the top of the sealing cavity 304, and the inner bottom wall of the sealing cavity 304 is fixedly provided with a return spring 3021, and the top end of the return spring 3021 is fixedly connected to the lower surface of the sealing piston plate 305.

[0038] In this embodiment, by setting up a push-type air pump 3019, when the sliding block 302 moves outward, it can drive the ejector rod 307 to move upward, thereby achieving the purpose of completely ejecting the product from the injection molding cavity 200, ensuring that the product is fully ejected, and having strong practicality.

[0039] During operation, when the mold is demoulding the product in the injection molding cavity 200, the rotating block 3011 can be rotated to drive the extension rod 3017 to rotate. The rotation of the extension rod 3017 drives the rotating rod 3014 to rotate under the action of the two bevel gears 3018. The rotation of the rotating rod 3014 drives the first bevel gear 3015 to rotate. The rotation of the first bevel gear 3015 drives the four second bevel gears 3016 to rotate, thereby driving the four threaded columns 309 to rotate at the same time. The rotation of the threaded column 309 drives the four sliding blocks 302 to slide outward at the same time under the action of the cylindrical thread groove 3010. The sliding of the sliding block 302 drives the bottom end of the ejector rod 307 to move outside the square cavity 301, thereby driving the ejector rod 307 to eject the top plate 303 from the circular opening of the bottom wall of the injection molding cavity 200. Moreover, in the process of the sliding block 302 moving outward, the movement of the sliding block 302 can make the inner wall of the square cavity 301 squeeze the push-type air pump 3019, so that the push-type air pump 3019 inflates the interior of the sealed cavity 304 through the inflation tube 3020, so that the sealing piston plate 305 moves upward, driving the rectangular block 306 to move upward, thereby driving the ejector rod 307 to move upward, thereby achieving the purpose of automatically ejecting the product quickly, and can achieve the purpose of completely ejecting the product from the injection molding cavity 200, ensuring that the product is fully ejected, and has strong practicality. In the process of ejection, the ejector rod 307 will not rub or collide with the surface of the product, thereby effectively achieving the purpose of not causing damage to the product in the process of ejecting the product, thereby ensuring product quality.

[0040] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A four-slider special-shaped ejector pin ejector mold, characterized in that: include: A lower mold body (100), wherein an injection molding cavity (200) is provided at the top of the lower mold body (100); An ejector assembly (300) is used to eject a finished product from an injection molding cavity (200), the ejector assembly (300) comprising a square cavity (301) provided inside a lower mold body (100), and rectangular openings provided on the inner walls of four square cavities (301), the inner walls of the four rectangular openings being slidably provided with sliding blocks (302), the inner top wall of the square cavity (301) being provided with four circular openings corresponding to the four sliding blocks (302) in a circumferential array, and the inner walls of the four circular openings being slidably provided with ejector plates (303), the upper surface of the sliding block (302) being provided with a sealing cavity (304), and the inner wall of the sealing cavity (304) being slidably provided with a sealing piston plate (305), the sealing piston plate (305) 05), a rectangular block (306) is fixedly provided on the upper surface of the rectangular block (306), a push rod (307) is rotatably provided on the upper surface of the rectangular block (306), and the top end of the push rod (307) is rotatably connected to the lower surface of the top plate (303), a square tube (308) is fixedly provided on the lower surface of the lower mold body (100) and extends into the interior of the square cavity (301), and the four inner side walls of the square tube (308) are all provided with threaded columns (309) extending into the interior of the square cavity (301), the surfaces of the four sliding blocks (302) are all provided with columnar thread grooves (3010) respectively threadedly connected to the outer surfaces of the four threaded columns (309), and the outer surface of the square tube (308) is provided with a rotating block (3011) for rotating the four threaded columns (309).

2. The four-slider special-shaped ejector pin ejector mold according to claim 1, characterized in that: The cross-sectional shape of the top plate (303) is T-shaped, and the outer surface of the top plate (303) is sleeved with a rubber sealing sleeve.

3. The four-slider special-shaped ejector pin ejector mold according to claim 1, characterized in that: The upper surface of the rectangular block (306) and the lower surface of the top plate (303) are both fixedly provided with a rotating frame (3012), the inner wall of the rotating frame (3012) is rotatably provided with a rotating shaft (3013), and the two ends of the top rod (307) are respectively fixedly connected to the surfaces of the rotating shafts (3013) on the inner walls of the two rotating frames (3012).

4. The four-slider special-shaped ejector pin ejector mold according to claim 1, characterized in that: A rotating rod (3014) is rotatably provided on the inner bottom wall of the square tube (308), and a first bevel gear (3015) is fixedly provided at the top end of the rotating rod (3014), and second bevel gears (3016) that mesh with the first bevel gear (3015) are fixedly provided at the ends of the four threaded columns (309).

5. The four-slider special-shaped ejector pin ejector mold according to claim 4, characterized in that: An extension rod (3017) extending to the outer surface of the square tube (308) is rotatably provided on the inner side wall of the square tube (308), the rotation block (3011) is fixedly provided at the end of the extension rod (3017), and mutually meshing bevel gears (3018) are fixedly provided on the other end of the extension rod (3017) and the surface of the rotation rod (3014).

6. The four-slider special-shaped ejector pin ejector mold according to claim 1, characterized in that: A mounting block is fixedly provided on the upper surface of the sliding block (302), and a press-type air pump (3019) is fixedly provided on the side surface of the mounting block, wherein the pressing end of the press-type air pump (3019) is fixedly connected to the inner wall of the square cavity (301).

7. The four-slider special-shaped ejector pin ejector mold according to claim 6, characterized in that: The air inlet end and the air outlet end of the push-type air pump (3019) are respectively provided with an air inlet one-way valve and an air outlet one-way valve, and the air outlet end of the push-type air pump (3019) is provided with an air inflation tube (3020) extending to the top of the sealing cavity (304), and the inner bottom wall of the sealing cavity (304) is fixedly provided with a return spring (3021), and the top end of the return spring (3021) is fixedly connected to the lower surface of the sealing piston plate (305).

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