Mold ejection structure

Abstract

The utility model discloses a mold ejection structure. The mold ejection structure comprises a front mold body and a rear mold body, a first cavity for forming a product is formed in the rear end of the front mold body; the front end of the rear mold body is in sliding connection with an ejector rod right opposite to the first cavity; a sliding pipe cavity is formed in the front end of the rear mold body; an ejection disc is formed at the front end of the ejection rod in the sliding pipe cavity; a second cavity used for forming a product handle is formed in the side wall of the ejection disc. And a connecting notch for communicating the first cavity with the second cavity is formed in the outer edge of the front end of the ejection disc. The ejection mechanism has the beneficial effects that the ejection rod is eccentrically arranged on the ejection disc, a large enough forming space is reserved for the second cavity, and a product handle can be made to be larger and is convenient to use, for example, disassembly of an inner cover of cosmetics and the like; particularly, the end face of the product is of a special-shaped structure, the connecting face of the lifting handle is an inclined face, and convenience is provided for product machining while the attractiveness is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds, and particularly relates to a mold ejection structure. Background Art

[0002] A plastic mold is a tool for producing plastic products. The molten plastic is injected into the molding cavity and cooled and shaped in the cavity. Then the upper and lower molds are separated, and the product is ejected from the mold cavity by the ejection mechanism. The ejection mechanism is generally composed of an ejector pin, an ejector plate, a backing plate, a guide pin and a guide sleeve, a reset rod, a pull rod and a stop pin.

[0003] The Chinese patent document with publication number CN219543927U discloses a mold ejection mechanism. The technical scheme adopted is: comprising a lower mold shell, the left and right sides of the lower side wall of the lower mold shell are symmetrically provided with through holes, the left and right through holes are respectively movably mounted with the left and right arms of the U-shaped ejector rod, the left and right arms of the U-shaped ejector rod are respectively movably mounted with springs, the left and right sides of the lower arm of the U-shaped ejector rod are respectively in contact with the circumferential side walls of the eccentric wheel, the left and right eccentric wheels are respectively fixedly mounted on the rotating shaft, the two ends of the rotating shaft are respectively connected to the U-shaped fixing frame, the left and right arms of the U-shaped fixing frame are respectively fixedly connected with the left and right side walls of the lower mold shell, the left side of the U-shaped fixing frame is fixedly installed with a driving mechanism, and the driving mechanism drives the rotating shaft to rotate.

[0004] The front end of the mold ejection mechanism in the above-mentioned patent scheme is in the shape of a trumpet, which can only eject sheet products. However, for the currently widely used sheet products, such as the inner cover of cosmetics, a handle is set at an eccentric position on the upper end of the inner cover to provide convenience for disassembly of the inner cover, and in order to increase the aesthetics, the upper end of the inner cover is often also set to an inclined structure. For such widely used products, the original circular trumpet ejection structure cannot be used for ejection if the handle is eccentrically set and the connecting surface of the handle is an inclined surface. Utility Model Content

[0005] In order to overcome the technical problem in the prior art that the horn ejection structure cannot eject a sheet-like part with an eccentrically arranged handle and an inclined handle connecting surface, one object of the utility model is to provide a mold ejection structure, by making a cavity for the product handle on the side wall of the ejection end and eccentrically arranging the ejection rod, so as to realize product ejection.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a mold ejection structure, including a front mold body and a rear mold body; the front mold body has a first cavity for molding a product formed at the rear end; the rear mold body has an ejector rod slidably connected to the first cavity; the rear mold body has a sliding tube cavity formed at the front end; the ejector rod has an ejector plate formed at the front end of the sliding tube cavity; the ejector plate has a second cavity for molding a handle for a product formed on the side wall; the front end outer edge of the ejector plate has a connecting notch for connecting the first cavity and the second cavity.

[0007] Specifically, the axis of the ejection disk is parallel to the axis of the ejection rod and is not arranged to overlap.

[0008] Specifically, the radial cross section of the ejector rod is semicircular.

[0009] Specifically, the front end of the ejection plate is an inclined surface; a round convex surface is formed at the front end of the inclined surface directly opposite to the second cavity; and the round convex surface is located at the highest position of the inclined surface.

[0010] This structure mainly improves the advantages and disadvantages of the mold trumpet ejection structure, uses the original trumpet top to improve the mold, and makes an eccentric small-angle anisotropic ejection structure to achieve product ejection improvement, thereby improving the mold ejection problem.

[0011] Furthermore, two connecting grooves evenly distributed along the circumferential direction are radially formed at the rear end of the outer wall of the ejector rod.

[0012] Furthermore, the rear end of the front mold body is provided with an injection port for injecting molten plastic into the first cavity.

[0013] Preferably, the second cavity is located at the lower end of the ejection disk.

[0014] Furthermore, a filling block is formed at the front end of the sliding tube cavity in the second cavity; the front end surface of the filling block, the inner wall of the second cavity and the inner wall of the sliding tube cavity constitute the injection molding cavity of the product handle.

[0015] Preferably, the front end surface of the filling block and the rear end surface of the second cavity are two parallel inclined surfaces.

[0016] Preferably, the width of the connecting gap is equal to the distance between the front end surface of the filling block and the rear end surface of the second cavity.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows: by eccentrically setting the ejector rod on the ejector plate, a sufficiently large molding space is reserved for the second cavity, and the product handle can be made larger for easy use, such as disassembly of the inner cover of a cosmetic; in particular, the end face of the product is a special-shaped structure and the handle connecting surface is an inclined surface, which improves the aesthetics while also providing convenience for product processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of assembling the front mold body and the rear mold body of the utility model;

[0019] Figure 2 An illustrative diagram of a processed product of the utility model;

[0020] Figure 3 For the utility model Figure 1 The enlarged schematic diagram of the middle A part;

[0021] Figure 4 It is a structural schematic diagram of the ejector rod of the utility model.

[0022] In the figure: 1, front mold body; 11, injection port; 2, rear mold body; 21, filling block; 3, ejector rod; 31, ejector plate; 311, inclined surface; 312, round convex surface; 32, second cavity; 33, connecting notch; 34, connecting groove; 4, product; 41, product handle. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0024] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0026] In the present invention, unless otherwise specified and limited, the terms "setting", "installation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or it can be connected through an intermediate medium, or two elements can be internally connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See also Figure 1 to Figure 4 A mold ejection structure includes a front mold body 1 and a rear mold body 2; the front mold body 1 has a first cavity for molding a product 4 formed at the rear end; the rear mold body 2 has an ejector rod 3 slidably connected to the first cavity; the rear mold body 2 has a sliding tube cavity formed at the front end; the ejector rod 3 is located in the sliding tube cavity and has an ejector plate 31 formed at the front end; the ejector plate 31 has a second cavity 32 for molding a product handle 41 formed on the outer wall at the lower end; the ejector plate 31 has a connecting notch 33 formed on the outer edge at the front end for connecting the first cavity and the second cavity.

[0028] The rear end of the front mold body 1 is provided with an injection port 11 for injecting molten plastic into the first cavity. The front end of the sliding tube cavity is located in the second cavity 32 and is molded with a filling block 21; the front end face of the filling block 21 and the rear end face of the second cavity 32 are two parallel inclined surfaces. The width of the connecting notch 33 is equal to the distance between the front end face of the filling block 21 and the rear end face of the second cavity 32; the front end face of the filling block 21, the inner wall of the second cavity 32 and the inner wall of the sliding tube cavity constitute the injection cavity of the product handle 41.

[0029] The axis of the ejector plate 31 is parallel to the axis of the ejector rod 3 and is not overlapped. The radial cross section of the ejector rod 3 is semicircular. The rear end of the outer wall of the ejector rod 3 is radially formed with two connecting grooves 34 evenly distributed along the circumferential direction. The front end of the ejector plate 31 is a slope 311; a circular convex surface 312 is formed at the front end of the slope 311 and directly opposite to the second cavity 32; the circular convex surface 312 is located at the highest position of the slope 311.

[0030] This structure mainly improves the advantages and disadvantages of the mold trumpet ejection structure, uses the original trumpet top to improve the mold, and makes an eccentric small-angle anisotropic ejection structure to achieve product ejection improvement, thereby improving the mold ejection problem.

[0031] The above description is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.

Claims

1. A mold ejection structure, comprising a front mold body and a rear mold body; the rear end of the front mold body is formed with a first cavity for molding a product; the front end of the rear mold body is slidably connected with an ejection rod facing the first cavity; characterized in that: A sliding tube cavity is formed at the front end of the rear mold body; an ejector plate is formed at the front end of the ejector rod in the sliding tube cavity; a second cavity for molding a product handle is formed on the side wall of the ejector plate; a connecting notch for connecting the first cavity and the second cavity is formed on the outer edge of the front end of the ejector plate.

2. The ejection structure according to claim 1, characterized in that: The axis of the ejection disk is parallel to the axis of the ejection rod and is not overlapped.

3. The ejection structure according to claim 1, characterized in that: The radial cross section of the ejector rod is semicircular.

4. The ejection structure according to claim 1, characterized in that: The front end of the ejector plate is an inclined surface; a round convex surface is formed at the front end of the inclined surface directly opposite to the second cavity; and the round convex surface is located at the highest position of the inclined surface.

5. The ejection structure according to claim 1, characterized in that: The rear end of the outer wall of the ejector rod is radially formed with two connecting grooves evenly distributed in the circumferential direction.

6. The ejection structure according to claim 1, characterized in that: The rear end of the front mold body is provided with an injection port for injecting molten plastic into the first cavity.

7. The ejection structure according to claim 1, characterized in that: The second cavity is located at the lower end of the ejection plate.

8. The ejection structure according to any one of claims 1 to 7, characterized in that: A filling block is formed at the front end of the sliding tube cavity in the second cavity; the front end surface of the filling block, the inner wall of the second cavity and the inner wall of the sliding tube cavity constitute the injection molding cavity of the product handle.

9. The ejection structure according to claim 8, characterized in that: The front end surface of the filling block and the rear end surface of the second cavity are two inclined surfaces parallel to each other.

10. The ejection structure according to claim 9, characterized in that: The width of the connecting gap is equal to the distance between the front end surface of the filling block and the rear end surface of the second cavity.

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