Automobile lamp shell precision injection mold with spliced core mechanism

Abstract

The utility model belongs to the technical field of molds, and relates to an automobile lamp shell precise injection mold with a spliced core mechanism. The automobile lamp shell forming die comprises an automobile lamp shell forming lower die and an automobile lamp shell forming upper die. A back structure of an automobile lamp shell can be synchronously formed through the side sliding type back forming piece, a side structure of the automobile lamp shell can be synchronously formed through the side sliding type side forming piece, a side bottom edge structure of the automobile lamp shell can be synchronously formed through the straight ejection type side edge forming demolding piece, and mold opening is conducted after injection molding is completed; the side sliding type back forming part and the side sliding type side forming part are subjected to side sliding demolding and move towards the end away from the formed automobile lamp shell, a spacious demolding space is formed, the collision condition is avoided, then a plastic part is subjected to multi-directional ejection demolding from the side bottom edge and the bottom through the straight ejection type side edge forming demolding part and the bottom ejection part, and the demolding efficiency is improved. The ejection area is increased, and the ejection efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to a precision injection mold for an automobile lamp housing with a spliced ​​core mechanism. Background Art

[0002] Injection molds are tools used to produce plastic products and give them a complete structure and precise dimensions. Automotive headlight housings are often molded using injection molds. However, during the injection molding process of the headlight assembly, the sidewalls and back of the headlight housing form a concave and convex structure due to the multiple ribs, headlight mounting surfaces, and locking lugs. This makes it difficult to demold the headlight housing after molding. If a straight-top mold is used, the plastic part will collide with the mold after mold opening, affecting the quality of the plastic part. Therefore, there is an urgent need to design a precision injection mold for automotive headlight housings with a spliced ​​core structure that can overcome these drawbacks.

[0003] In order to overcome the shortcomings of the existing technology, people have proposed various solutions through continuous exploration. For example, a Chinese patent discloses an injection mold for an automobile lamp housing [application number: 202222335684.3], which includes: a gantry, an ejection structure and a cooling structure; the gantry is fixedly connected to the mold base through a support rod, and a clamping cylinder is installed on the gantry, and the piston rod of the clamping cylinder is fixedly connected to the upper mold base, and the bottom of the upper mold base is installed with an upper mold, the mold base is installed with a lower mold base, and the surface of the lower mold base is installed with a lower mold, and the bottom of the mold base is supported and fixed by support legs, two sets of cooling structures are installed on the upper mold, and two sets of cooling structures are installed on the lower mold. Utility Model Content

[0004] The purpose of the utility model is to solve the above problems and provide a precision injection mold for an automobile lamp housing with a spliced ​​core mechanism.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A precision injection mold for an automobile headlight housing with a spliced ​​core mechanism, comprising a headlight housing molding lower mold and a headlight housing molding upper mold, an injection molding diverter being provided above the headlight housing molding upper mold, a spliced ​​core mechanism being provided between the headlight housing molding lower mold and the headlight housing molding upper mold, the spliced ​​core mechanism corresponding to the position of the injection molding diverter, the spliced ​​core mechanism comprising a side-sliding back molding part, a side-sliding side molding part and a straight-top side molding demolding part, a bottom ejection part capable of reciprocating linear motion in a vertical direction being provided in the headlight housing molding lower mold, the side-sliding back molding part, the side-sliding side molding part and the straight-top side molding demolding part being staggered with the bottom ejection part.

[0007] In the above-mentioned precision injection mold for automobile lamp housing with a spliced ​​core mechanism, the side-sliding back molding part includes a back molding slide seat arranged in the upper mold for molding the lamp housing, and the inner side of the back molding slide seat has a housing back molding surface.

[0008] In the above-mentioned precision injection mold for automobile lamp housing with a spliced ​​core mechanism, a first inclined slide bar is provided in the upper mold for molding the lamp housing. The first inclined slide bar passes through the back molding slide and slides with the back molding slide.

[0009] In the above-mentioned precision injection mold for automobile lamp housing with a spliced ​​core mechanism, the side-sliding side molding component includes a side molding slide seat arranged in the lower molding mold of the lamp housing, and the inner side of the side molding slide seat has a housing side molding surface.

[0010] In the above-mentioned precision injection mold for automobile lamp housing with a spliced ​​core mechanism, a second inclined slide bar is provided in the lower mold for molding the lamp housing. The second inclined slide bar passes through the side molding slide and slides with the side molding slide.

[0011] In the above-mentioned precision injection mold for the automobile headlight housing with a spliced ​​core mechanism, the straight-top side molding demolding part includes a first side molding demolding top block and a second side molding demolding top block arranged in the lower mold of the headlight housing molding, and the first side molding demolding top block and the second side molding demolding top block are staggered.

[0012] In the above-mentioned precision injection mold for the automobile lamp housing with a spliced ​​core mechanism, a first ejection link is provided at the bottom of the first side forming demolding ejector block, and a second ejection link is provided at the bottom of the second side forming demolding ejector block, and the axis line of the first ejection link is parallel to the axis line of the second ejection link.

[0013] In the above-mentioned precision injection mold for the automobile lamp housing with the spliced ​​core mechanism, the bottom ejector comprises a plurality of bottom ejector straight rods arranged in the lower mold for forming the lamp housing.

[0014] In the above-mentioned precision injection mold for automobile lamp housing with a spliced ​​core mechanism, the injection-molded diverter comprises an injection-molded main plate and an injection-molded diverter plate disposed above the upper mold for molding the lamp housing.

[0015] In the above-mentioned precision injection mold for the automobile lamp housing with a spliced ​​core structure, the bottom of the injection manifold is provided with two tilted counter-position injection tubes.

[0016] Compared with the existing technology, the advantages of this utility model are:

[0017] The utility model is used for the injection molding process, wherein the lower mold for molding the automobile lamp housing and the upper mold for molding the automobile lamp housing are brought close to each other, so that the side-sliding back molding part, the side-sliding side molding part and the straight-top side molding demoulding part cooperate with the lower mold for molding the automobile lamp housing and the upper mold for molding the automobile lamp housing to form two complete cavities. The molten material is injection-diverted through the injection diverter and injected into the two cavities simultaneously. The injection molding rate is fast. The back structure of the automobile lamp housing can be molded synchronously through the side-sliding back molding part, and the side-sliding side molding part can be molded synchronously. To form the side structure of the automobile lamp housing, the straight-top side molding demolding parts can simultaneously form the side and bottom structures of the automobile lamp housing. After the injection molding is completed, the mold is opened, and the side-sliding back molding parts and the side-sliding side molding parts are demolded by sliding sideways and moved away from the molded automobile lamp housing to form a spacious demolding space to avoid collision. Then, the straight-top side molding demolding parts and the bottom ejector parts are used to eject the plastic parts from the side bottom edges and bottom in multiple directions, thereby increasing the ejection area and improving the ejection efficiency.

[0018] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the present utility model.

[0020] Figure 2 It is a partial structural diagram of the utility model.

[0021] Figure 3 It is a partial structural diagram of the utility model in another direction.

[0022] Figure 4 It is a partial structural diagram of the utility model in another direction.

[0023] In the figure: the lower mold 1 for forming the lamp housing, the upper mold 2 for forming the lamp housing, the injection molding diverter 3, the spliced ​​core mechanism 4, the side-sliding back molding part 5, the side-sliding side molding part 6, the straight-top side molding demolding part 7, the bottom ejector 8, the back molding slide 9, the housing back molding surface 10, the first inclined slide bar 11, the side molding slide 12, the housing side molding surface 13, the second inclined slide bar 14, the first side molding demolding top block 15, the second side molding demolding top block 16, the first ejection connecting rod 17, the second ejection connecting rod 18, the bottom ejection straight rod 19, the injection molding main board 20, the injection molding diverter plate 21, and the counter-injection molding tube 22. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] like Figure 1-4 As shown, a precision injection mold for an automobile headlight housing with a spliced ​​core mechanism comprises a headlight housing molding lower mold 1 and a headlight housing molding upper mold 2, an injection molding diverter 3 is provided above the headlight housing molding upper mold 2, a spliced ​​core mechanism 4 is provided between the headlight housing molding lower mold 1 and the headlight housing molding upper mold 2, the spliced ​​core mechanism 4 corresponds to the position of the injection molding diverter 3, the spliced ​​core mechanism 4 comprises a side-sliding back molding part 5, a side-sliding side molding part 6 and a straight-top side molding demolding part 7, a bottom ejector 8 which can reciprocate linearly in the vertical direction is provided in the headlight housing molding lower mold 1, the side-sliding back molding part 5, the side-sliding side molding part 6 and the straight-top side molding demolding part 7 are staggered with the bottom ejector 8.

[0026] In this embodiment, during the injection molding process, the lower mold 1 for molding the vehicle lamp housing and the upper mold 2 for molding the vehicle lamp housing are brought close to each other, so that the side-sliding back molding part 5, the side-sliding side molding part 6 and the straight-top side molding demolding part 7 cooperate with the lower mold 1 for molding the vehicle lamp housing and the upper mold 2 for molding the vehicle lamp housing to form two complete cavities. The molten material is injection-diverted through the injection diverter 3 and injected into the two cavities simultaneously. The injection molding rate is fast, and the back structure of the vehicle lamp housing can be synchronously molded through the side-sliding back molding part 5, and the side-sliding side molding part 6 can simultaneously form the side structure of the automobile lamp housing, and the straight-top side molding demolding part 7 can simultaneously form the side bottom structure of the automobile lamp housing. After the injection molding is completed, the mold is opened, and the side-sliding back molding part 5 and the side-sliding side molding part 6 are demolded by sliding sideways and moved away from one end of the molded automobile lamp housing to form a spacious demolding space to avoid collision. Then, the straight-top side molding demolding part 7 and the bottom ejector 8 are used to eject the plastic part from the side bottom and bottom in multiple directions, thereby increasing the ejection area and improving the ejection efficiency.

[0027] Combine Figure 1-4As shown, the side-sliding back molding part 5 includes a back molding slide 9 arranged in the upper mold 2 for molding the lamp shell, and the inner side of the back molding slide 9 has a shell back molding surface 10, and the upper mold 2 for molding the lamp shell is provided with a first inclined slide rod 11, which passes through the back molding slide 9 and slides with the back molding slide 9.

[0028] Specifically, during the injection molding process, the back molding surface 10 of the back molding slide 9 can synchronously mold the back structure of the automobile lamp shell. After the injection molding is completed, the back molding slide 9 moves along the first inclined slide rod 11 toward one end away from the molded automobile lamp shell, forming a spacious demolding space.

[0029] Combine Figure 3 、 Figure 4 As shown, the side-sliding side molding component 6 includes a side molding slide 12 arranged in the lower mold 1 of the car lamp shell molding, and the inner side of the side molding slide 12 has a shell side molding surface 13. The lower mold 1 of the car lamp shell molding is provided with a second inclined slide rod 14, and the second inclined slide rod 14 passes through the side molding slide 12 and slides with the side molding slide 12.

[0030] In this embodiment, during the injection molding process, the shell side molding surface 13 of the side molding slide 12 can synchronously mold the side structure of the automobile lamp shell. After the injection molding is completed, the side molding slide 12 moves along the second inclined slide rod 14 away from one end of the molded automobile lamp shell to form a spacious demolding space.

[0031] Combine Figure 3-4 As shown, the straight-top side molding demolding component 7 includes a first side molding demolding top block 15 and a second side molding demolding top block 16 arranged in the lower mold 1 of the lamp housing molding, the first side molding demolding top block 15 and the second side molding demolding top block 16 are staggered, a first ejection link 17 is provided at the bottom of the first side molding demolding top block 15, and a second ejection link 18 is provided at the bottom of the second side molding demolding top block 16, and the axis line of the first ejection link 17 and the axis line of the second ejection link 18 are parallel to each other.

[0032] In this embodiment, during the injection molding process, the first side molding demolding top block 15 and the second side molding demolding top block 16 can synchronously mold the side and bottom edge structures of the automobile headlight housing. After the injection molding is completed, the first ejection link 17 and the second ejection link 18 are moved upward to drive the first side molding demolding top block 15 and the second side molding demolding top block 16 to eject the side and bottom edges of the plastic part, and the ejection area is large.

[0033] Combine Figure 1-3 As shown, the bottom ejector 8 includes a plurality of bottom ejector straight rods 19 arranged in the lower mold 1 for forming the lamp housing.

[0034] In this embodiment, after the injection molding is completed, the mold is opened, and the bottom ejection straight rod 19 is moved upward to eject the bottom of the plastic part to prevent the bottom of the plastic part from being in a suspended state without stress.

[0035] Combine Figure 1-4 As shown, the injection molding diverter 3 includes an injection molding main board 20 and an injection molding diverter plate 21 arranged above the upper mold 2 for forming the lamp housing. The bottom of the injection molding diverter plate 21 has two inclined aligned injection molding tubes 22.

[0036] In this embodiment, during injection molding, the molten material is injected into the injection molding manifold plate 21 through the injection molding main board 20, and then the molten material is sent into the two mold cavities through the alignment injection molding tube 22 to complete the injection molding.

[0037] The working principle of this utility model is:

[0038] During the injection molding process, the headlight housing molding lower mold 1 and the headlight housing molding upper mold 2 are brought close to each other, so that the side-sliding back molding part 5, the side-sliding side molding part 6 and the straight-top side molding demolding part 7 cooperate with the headlight housing molding lower mold 1 and the headlight housing molding upper mold 2 to form two complete cavities. The molten material is injected into the injection molding diverter plate 21 through the injection molding main board 20, and then the molten material is sent into the two cavities through the positioning injection molding tube 22. The injection molding rate is fast, and the shell back molding surface 10 of the back molding slide 9 can synchronously mold the back structure of the automobile headlight housing, and the shell side molding surface 13 of the side molding slide 12 can synchronously mold the side structure of the automobile headlight housing, and one side is molded and demolded. The top block 15 and the second side forming demoulding top block 16 can synchronously form the side and bottom structure of the automobile lamp housing. After the injection molding is completed, the back forming slide 9 moves along the first inclined slide bar 11 to the end away from the molded automobile lamp housing, and the side forming slide 12 moves along the second inclined slide bar 14 to the end away from the molded automobile lamp housing to form a spacious demoulding space. The first ejection link 17 and the second ejection link 18 are moved upward to drive the first side forming demoulding top block 15 and the second side forming demoulding top block 16 to eject the side and bottom edges of the plastic part. The ejection area is large, and the bottom ejection straight rod 19 is moved upward to eject the bottom of the plastic part to avoid the bottom of the plastic part being in a suspended and stress-free state.

[0039] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described, or replace them with similar methods, without departing from the spirit of the present invention.

[0040] Although this article frequently uses the terms such as the lamp housing molding lower mold 1, the lamp housing molding upper mold 2, the injection molding diverter 3, the spliced ​​core mechanism 4, the side-sliding back molding part 5, the side-sliding side molding part 6, the straight-top side molding demolding part 7, the bottom ejector 8, the back molding slide 9, the housing back molding surface 10, the first inclined slide 11, the side molding slide 12, the housing side molding surface 13, the second inclined slide 14, the first side molding demolding top block 15, the second side molding demolding top block 16, the first ejection connecting rod 17, the second ejection connecting rod 18, the bottom ejection straight rod 19, the injection molding main board 20, the injection molding diverter plate 21, and the counter-injection molding tube 22, the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the utility model. Interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A precision injection mold for an automobile lamp housing with a spliced ​​core structure, comprising a lower mold (1) for molding the lamp housing and an upper mold (2) for molding the lamp housing, characterized in that: An injection molding diverter (3) is provided above the upper mold (2) for molding the vehicle lamp housing, and a spliced ​​core mechanism (4) is provided between the lower mold (1) for molding the vehicle lamp housing and the upper mold (2) for molding the vehicle lamp housing. The spliced ​​core mechanism (4) corresponds to the position of the injection molding diverter (3), and the spliced ​​core mechanism (4) includes a side-sliding back molding member (5), a side-sliding side molding member (6) and a straight-top side molding demoulding member (7). A bottom ejection member (8) capable of reciprocating linear motion in a vertical direction is provided in the lower mold (1) for molding the vehicle lamp housing, and the side-sliding back molding member (5), the side-sliding side molding member (6) and the straight-top side molding demoulding member (7) are staggered with the bottom ejection member (8).

2. The precision injection mold for automobile lamp housing with a spliced ​​core structure according to claim 1, characterized in that: The side-sliding back molding part (5) comprises a back molding slide (9) arranged in an upper molding die (2) for a vehicle lamp housing, and the inner side of the back molding slide (9) has a housing back molding surface (10).

3. The precision injection mold for automobile lamp housing with a spliced ​​core structure according to claim 2, characterized in that: A first inclined slide bar (11) is provided in the upper mold (2) for forming the vehicle lamp housing. The first inclined slide bar (11) passes through the back forming slide seat (9) and is in sliding engagement with the back forming slide seat (9).

4. The precision injection mold for automobile lamp housing with a spliced ​​core structure according to claim 3, characterized in that: The side-sliding side molding component (6) comprises a side molding slide (12) arranged in a lower molding die (1) for a vehicle lamp housing, and the inner side of the side molding slide (12) has a housing side molding surface (13).

5. The precision injection mold for automobile lamp housing with a spliced ​​core structure according to claim 4, characterized in that: A second inclined slide bar (14) is provided in the lower mold (1) for forming the vehicle lamp housing. The second inclined slide bar (14) passes through the side forming slide seat (12) and is slidably matched with the side forming slide seat (12).

6. The precision injection mold for automobile lamp housing with a spliced ​​core structure according to claim 5, characterized in that: The straight-top side molding demoulding component (7) comprises a first side molding demoulding top block (15) and a second side molding demoulding top block (16) arranged in a lower molding die (1) of a vehicle lamp housing, wherein the first side molding demoulding top block (15) and the second side molding demoulding top block (16) are arranged in an alternating manner.

7. The precision injection mold for automobile lamp housing with a spliced ​​core structure according to claim 6, characterized in that: A first ejection link (17) is provided at the bottom of the first side molding demoulding top block (15), and a second ejection link (18) is provided at the bottom of the second side molding demoulding top block (16), and the axis center line of the first ejection link (17) and the axis center line of the second ejection link (18) are parallel to each other.

8. The precision injection mold for automobile lamp housing with a spliced ​​core structure according to claim 7, characterized in that: The bottom ejector (8) comprises a plurality of bottom ejector straight rods (19) arranged in the lower mold (1) for forming the vehicle lamp housing.

9. The precision injection mold for automobile lamp housing with a spliced ​​core structure according to claim 8, characterized in that: The injection molded flow diverter (3) comprises an injection molded main plate (20) and an injection molded flow diverter plate (21) arranged above the upper mold (2) for forming the vehicle lamp housing.

10. The precision injection mold for automobile lamp housing with a spliced ​​core structure according to claim 9, characterized in that: The bottom of the injection molding manifold (21) is provided with two tilted counter-position injection molding tubes (22).

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