Rear lamp thick-wall mold

Abstract

The utility model discloses a thick-wall die for a rear lamp. The mold body comprises an injection molding male mold, an injection molding female mold matched with the injection molding male mold, a guide hole vertically formed in the corner of the injection molding male mold, an ejector rod movably arranged in the guide hole, a plurality of separation holes vertically formed in the middle of the injection molding male mold, and demolding rods movably arranged in the separation holes. The cooling channel is horizontally arranged in the injection molding male die and the injection molding female die, and the injection pipe and the exhaust pipe are communicated with an inner cavity of the injection molding female die. Inner cavities of the injection molding male die and the injection molding female die are spaced to form a forming cavity of the rear lamp. The injection molding male die and the injection molding female die are arranged at intervals to form the injection molding cavity of the rear lamp, the injection molding cavity is used for injection molding of the rear lamp, rapid cooling of a rear lamp model is achieved under the action of the cooling channel, and the injection molding efficiency of a rear lamp shell is improved; and meanwhile, the ejector rod and the demolding rod are arranged to assist demolding separation of the rear lamp shell, and rapid separation of the rear lamp shell after complete injection molding is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of rear lamp manufacturing, and particularly relates to a rear lamp thick-wall mold. Background Technique

[0002] An injection mold is a tool for producing plastic products; it is also a tool for giving plastic products a complete structure and precise dimensions. Injection molding is a processing method used when mass-producing some complex-shaped parts. Specifically, it means injecting the heat-melted plastic raw material into the mold cavity under high pressure by an injection molding machine, and after cooling and solidifying, a formed product is obtained. The rear lamp cover of an automobile is processed by an injection mold.

[0003] For example, in an existing publicly disclosed patent (patent publication number: CN 211221812 U), an injection mold for an automobile rear lamp cover includes a fixed mold assembly, a movable mold assembly, a mold ejection hydraulic press, and a ring-type mold ejection device. The fixed end of the mold ejection hydraulic press is arranged on the fixed mold assembly, the ring-type mold ejection device is detachably arranged on the fixed mold assembly, the movable end of the mold ejection hydraulic press is connected to the lower end of the ring-type mold ejection device, the movable mold assembly is detachably clamped on the fixed mold assembly, and the ring-type mold ejection device is arranged at the lower end of the movable mold assembly.

[0004] However, the above device has a cumbersome composition structure, a high manufacturing cost, and lacks a cooling structure, resulting in low efficiency. Therefore, the utility model provides a rear lamp thick-wall mold to improve the above problems. Content of the Utility Model

[0005] The utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] Therefore, the technical solution adopted by the utility model is as follows:

[0007] A rear lamp thick-wall mold, the mold body includes an injection punch, an injection die matched with the injection punch, a guide hole vertically arranged at the corner of the injection punch, a ejector rod movably arranged inside the guide hole, a plurality of separation holes vertically arranged in the middle of the injection punch, a demolding rod movably arranged inside the separation holes, a cooling channel horizontally arranged inside the injection punch and the injection die, and an injection pipe and an exhaust pipe communicated with the inner cavity of the injection die.

[0008] Preferably, the edges of the injection punch and the injection die are provided with limit holes, and the ends of external positioning columns are connected inside the limit holes.

[0009] Preferably, the inner cavities of the injection punch and the injection die are spaced to form a molding cavity for the rear lamp, and the edges of the connection between the injection punch and the injection die are sealed.

[0010] Preferably, the top of the ejector rod conflicts with the inner corner of the injection mold, and the demoulding rod conflicts with the injection molded rear light product.

[0011] Preferably, cooling water flows inside the cooling channel.

[0012] Preferably, the injection convex mold and the injection concave mold are provided with protrusions, and the outer frames of the injection convex mold and the injection concave mold are both closed.

[0013] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0014] 1. The utility model forms an injection cavity for the rear lamp by arranging an injection molding punch and an injection molding die, which is used for injection molding of the rear lamp, and realizes rapid cooling of the rear lamp model under the action of a cooling channel, thereby improving the injection molding efficiency of the rear lamp shell, wherein hot glue is injected into the cavity formed by the injection molding punch and the injection molding die, and after the cavity is completely filled, cooling water in the cooling channel is used to dissipate heat from the mold cavity, thereby accelerating its cooling and improving the injection molding efficiency of the rear lamp shell.

[0015] 2. The utility model assists in demoulding and separation of the rear lamp housing by setting a push rod and a demoulding rod, so as to facilitate the rapid separation of the rear lamp housing after the injection molding is completed. After the injection molding is completed, the push rod is used to separate the injection convex mold from the injection concave mold, and the demoulding rod is used to lift the rear lamp housing on the surface of the injection convex mold to complete the demoulding of the rear lamp housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the upper part of the overall structure of an embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the lower part of the overall structure of an embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of the overall structure of an embodiment of the utility model.

[0019] Reference numerals:

[0020] 1. Mold body; 11. Injection punch; 12. Injection die; 13. Guide hole; 14. Ejector pin; 15. Separation hole; 16. Demolding rod; 17. Cooling channel; 18. Injection pipe; 19. Exhaust pipe. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0022] The following describes a rear lamp thick-wall mold provided by some embodiments of the present utility model in conjunction with the accompanying drawings.

[0023] Embodiment 1:

[0024] Combined with Figures 1-3 As shown, a rear lamp thick-wall mold provided by the present utility model, the mold body 1 includes an injection convex mold 11, an injection concave mold 12 that cooperates with the injection convex mold 11, a guide hole 13 vertically provided at the corner of the injection convex mold 11, a ejector rod 14 movably arranged inside the guide hole 13, a plurality of separation holes 15 vertically provided in the middle of the injection convex mold 11, a demolding rod 16 movably arranged inside the separation holes 15, a cooling channel 17 horizontally arranged inside the injection convex mold 11 and the injection concave mold 12, and an injection pipe 18 and an exhaust pipe 19 communicated with the inner cavity of the injection concave mold 12; in the rear lamp thick-wall mold involved in this application, the injection convex mold 11 and the injection concave mold 12 are the main structures of the mold, assisting the injection molding machine to inject and form the rear lamp housing. The guide hole 13 is used for the installation of the ejector rod 14, the separation holes 15 are used for the installation of the demolding rod 16, the injection pipe 18 is used for injecting hot glue, and the exhaust pipe 19 is used for discharging the gas in the inner cavities of the injection convex mold 11 and the injection concave mold 12.

[0025] Specifically, the edges of the injection convex mold 11 and the injection concave mold 12 are provided with limit holes, and the ends of external positioning columns are connected inside the limit holes; the limit holes are used for positioning and installing the ends of the positioning columns, and the positioning columns are used for fixing the positions between the injection convex mold 11 and the injection concave mold 12.

[0026] Specifically, the inner cavities of the injection convex mold 11 and the injection concave mold 12 are spaced apart to form a molding cavity for the rear lamp, and the edges at the connection of the injection convex mold 11 and the injection concave mold 12 are sealed; the cavity formed by the injection convex mold 11 and the injection concave mold 12 being spaced apart is used for injecting hot glue, and under the action of the seal at the edges of the injection convex mold 11 and the injection concave mold 12, the hot glue cannot leak.

[0027] Specifically, the top of the ejector rod 14 abuts against the inner corner of the injection concave mold 12, and the demolding rod 16 abuts against the injection-molded rear lamp product; the ejector rod 14 is used to assist in separating the injection concave mold 12 from the injection convex mold 11, and the demolding rod 16 is used to separate the molded rear lamp from the injection convex mold 11.

[0028] Specifically, cooling water flows inside the cooling channel 17; the cooling channel 17 is used for the circulating flow of cooling water to achieve the rapid conduction and dissipation of heat inside the mold cavity.

[0029] Specifically, the injection mold convex die 11 and the injection mold concave die 12 are provided with protrusions, and the outer frames of the injection mold convex die 11 and the injection mold concave die 12 are both closed; the protrusions provided on the injection mold convex die 11 and the injection mold concave die 12 are used to assist in the formation of the shape of the rear lamp during the injection molding process, and to prevent the liquid medium from flowing out from the edge of the cavity during the injection molding process.

[0030] The working principle and usage process of the present utility model: When the rear lamp thick-wall mold involved in this application is specifically used, first, the injection mold convex die 11 and the injection mold concave die 12 are fixed to fit with each other, and under the action of the external positioning posts, the injection mold convex die 11 and the injection mold concave die 12 are tightly pressed against each other, so that the overall frame of the mold is fixed. Subsequently, the injection hot glue is injected into the injection pipe 18. As the hot glue is injected, the air inside the cavities of the injection mold convex die 11 and the injection mold concave die 12 is gradually discharged through the exhaust pipe 19. When the hot glue is discharged from the exhaust pipe 19, it means that the cavities of the injection mold convex die 11 and the injection mold concave die 12 are completely filled with hot glue. Subsequently, the cooling water continuously circulates through the cooling channel 17 to continuously take away the heat of the hot glue in the mold cavity, realizing the rapid cooling of the model of the rear lamp housing. When the rear lamp housing is formed, the injection mold concave die 12 above is ejected by the ejector rod 14 to separate from the injection mold convex die 11, and the model of the rear lamp housing is ejected by the demolding rod 16 to separate from the surface of the injection mold convex die 11, obtaining the completed model of the rear lamp housing. Subsequently, the model is transported to the subsequent polishing and grinding process.

[0031] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A rear lamp thick-wall mold, characterized in that, it includes: A mold body (1), including an injection convex mold (11), an injection concave mold (12) that cooperates with the injection convex mold (11), a guide hole (13) vertically provided at the corner of the injection convex mold (11), a ejector rod (14) movably arranged inside the guide hole (13), a plurality of separation holes (15) vertically provided in the middle of the injection convex mold (11), a demolding rod (16) movably arranged inside the separation holes (15), a cooling channel (17) horizontally arranged inside the injection convex mold (11) and the injection concave mold (12), and an injection pipe (18) and an exhaust pipe (19) communicating with the inner cavity of the injection concave mold (12).

2. The rear lamp thick-wall mold according to claim 1, characterized in that, Limit holes are provided at the edges of the injection convex mold (11) and the injection concave mold (12), and the ends of external positioning columns are connected inside the limit holes.

3. The rear lamp thick-wall mold according to claim 1, characterized in that, The inner cavities of the injection convex mold (11) and the injection concave mold (12) are spaced apart to form a molding cavity for the rear lamp, and the edges of the connection between the injection convex mold (11) and the injection concave mold (12) are sealed.

4. The rear lamp thick-wall mold according to claim 1, characterized in that, The top of the ejector rod (14) abuts against the inner corner of the injection concave mold (12), and the demolding rod (16) abuts against the injection rear lamp product.

5. The rear lamp thick-wall mold according to claim 1, characterized in that, Cooling water flows inside the cooling channel (17).

6. The rear lamp thick-wall mold according to claim 1, characterized in that, The injection convex mold (11) and the injection concave mold (12) are provided with protrusions, and the outer frames of the injection convex mold (11) and the injection concave mold (12) are both closed.

Images