Front mold tunnel core-pulling mechanism of automobile side wall injection mold

Abstract

The utility model belongs to the technical field of molds, and particularly relates to a front mold tunnel core-pulling mechanism of an automobile side wall injection mold. The automobile side wall forming die comprises an automobile side wall forming lower die and an automobile side wall forming upper die. In the injection molding process, the automobile side wall forming lower mold and the automobile side wall forming upper mold are close to each other, so that the side wall lower forming surface and the side wall upper forming surface are butted and matched to form a complete cavity, and a molten material is injected into the cavity through the injection molding piece; synchronous injection molding is conducted on the groove structure of the side portion of the automobile side wall through the tunnel core-pulling structure, secondary machining is not needed, the working procedure is shortened, after molding is completed, the tunnel core-pulling structure is moved to the side away from a plastic part, the tunnel core-pulling structure is limited through the core-pulling limiting part, and the service life of the tunnel core-pulling structure is prolonged. The position deviation of the tunnel core-pulling structure in the moving process is avoided, the core-pulling accuracy is high, then the mold is opened, the molded plastic part is comprehensively ejected through the combined ejection part, and the ejection area is large.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and relates to a front mold tunnel core-pulling mechanism for an automobile side panel injection mold. Background Art

[0002] The automobile side panel is used inside the vehicle body. It is large in volume and complex in structure, and generally has a speaker net for covering the speaker. With the rapid development of the automobile industry, it is required to reduce the weight of the automobile. Therefore, the side panel is generally made of plastic material and is injection-molded through an injection mold. In the injection process of the existing automobile side panel injection mold, the side groove structure of the side panel needs secondary processing, with many processes, and the core-pulling structure in the mold is prone to position deviation during movement, resulting in poor accuracy. Therefore, there is an urgent need to design a front mold tunnel core-pulling mechanism for an automobile side panel injection mold that can overcome the above defects.

[0003] In order to overcome the deficiencies of the prior art, people have continuously explored and proposed various solutions. For example, a Chinese patent discloses an injection mold for an automobile outer side panel that is convenient for demolding [Application No.: 201911351751.7], which includes a base, a lower mold, and an upper mold. The top of the base is fixedly connected with the lower mold, and the side of the top of the base is fixedly connected with a support plate. The top of the support plate is fixedly sleeved with a hydraulic mechanism, and the bottom end of the hydraulic mechanism is fixedly connected with the top of the upper mold. The bottom of the upper mold is fixedly connected with a positioning rod, and a feeding groove is opened inside the upper mold. Summary of the Invention

[0004] The purpose of the utility model is to provide a front mold tunnel core-pulling mechanism for an automobile side panel injection mold for the above problems.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A front mold tunnel core-pulling mechanism for an automobile side panel injection mold includes an automobile side panel forming lower mold and an automobile side panel forming upper mold. An injection part is arranged above the automobile side panel forming upper mold. A side panel lower forming surface is arranged inside the automobile side panel forming lower mold, and a side panel upper forming surface is arranged inside the automobile side panel forming upper mold. The positions of the side panel lower forming surface and the side panel upper forming surface correspond to each other and the shapes are matched. A tunnel core-pulling structure that can move along one side close to or away from the side panel lower forming surface is arranged inside the automobile side panel forming upper mold. A core-pulling limiting part is also arranged inside the automobile side panel forming upper mold. The tunnel core-pulling structure is slidably matched with the core-pulling limiting part. A combined ejecting part is arranged below the automobile side panel forming lower mold.

[0007] In the above-mentioned front mold tunnel core-pulling mechanism of the automobile side panel injection mold, the tunnel core-pulling structure includes a side core-pulling slide seat arranged in the upper mold for forming the automobile side panel. A side panel groove forming protrusion is arranged inside the side core-pulling slide seat, and the side panel groove forming protrusion corresponds to the position of the lower forming surface of the side panel and is matched in shape.

[0008] In the above-mentioned front mold tunnel core-pulling mechanism of the automobile side panel injection mold, a slide seat driving connecting piece capable of reciprocating linearly in the vertical direction is arranged in the upper mold for forming the automobile side panel, and the slide seat driving connecting piece is in sliding fit with the side core-pulling slide seat.

[0009] In the above-mentioned front mold tunnel core-pulling mechanism of the automobile side panel injection mold, the slide seat driving connecting piece includes a vertical connecting seat arranged in the upper mold for forming the automobile side panel. A limiting inclined groove is arranged inside the vertical connecting seat. An inclined limiting block integrally formed with the side core-pulling slide seat is arranged on the side core-pulling slide seat. The inclined limiting block extends into the limiting inclined groove, and the inclined surface of the inclined limiting block is in sliding fit with the inclined surface of the limiting inclined groove.

[0010] In the above-mentioned front mold tunnel core-pulling mechanism of the automobile side panel injection mold, an oil cylinder is arranged in the upper mold for forming the automobile side panel. The power shaft of the oil cylinder is connected to the vertical connecting seat. The core-pulling limiting part includes a limiting upright column arranged in the upper mold for forming the automobile side panel, and the side core-pulling slide seat is in sliding fit with the limiting upright column.

[0011] In the above-mentioned front mold tunnel core-pulling mechanism of the automobile side panel injection mold, the combined ejector includes an internally molded inclined ejector block and a straight ejector rod. The internally molded inclined ejector block corresponds to the position of the lower forming surface and is matched in shape.

[0012] In the above-mentioned front mold tunnel core-pulling mechanism of the automobile side panel injection mold, an inclined ejector rod is arranged at the bottom of the internally molded inclined ejector block, and the inclined ejector rod and the straight ejector rod are arranged alternately.

[0013] In the above-mentioned front mold tunnel core-pulling mechanism of the automobile side panel injection mold, an ejection connecting slide plate is arranged below the lower mold for forming the automobile side panel. The inclined ejector rod and the straight ejector rod are respectively connected to the ejection connecting slide plate.

[0014] In the above-mentioned front mold tunnel core-pulling mechanism of the automobile side panel injection mold, a bottom plate is arranged below the ejection connecting slide plate. Anti-deviation spacers are arranged on both sides of the bottom plate, and the ejection connecting slide plate is in sliding fit with the anti-deviation spacers.

[0015] In the above-mentioned front mold tunnel core-pulling mechanism of the automobile side panel injection mold, the injection molded part includes an injection main board arranged above the upper mold for forming the automobile side panel.

[0016] Compared with the existing technology, the advantages of the present utility model are as follows:

[0017] 1. During the injection molding process of the present utility model, the lower mold for forming the automotive side panel and the upper mold for forming the automotive side panel are brought closer to each other, so that the lower forming surface of the side panel and the upper forming surface of the side panel are abutted and cooperated to form a complete cavity. The molten material is injected into the cavity through the injection part. The groove structure on the side of the automotive side panel is integrally injection molded through the tunnel core-pulling structure without secondary processing, shortening the process. After the molding is completed, the tunnel core-pulling structure is moved away from the plastic part side, and the core-pulling limiting part plays a limiting role on the tunnel core-pulling structure to prevent the tunnel core-pulling structure from shifting in position during the movement, with high core-pulling accuracy. Then, the mold is opened, and the molded plastic part is fully ejected by the combined ejector, with a large ejection area.

[0018] 2. The limiting upright column in the present utility model can limit the upper side of the side core-pulling slide seat to prevent the side core-pulling slide seat from bouncing up and down during the core-pulling process, and the core-pulling stability is relatively strong.

[0019] Other advantages, objectives and features of the present utility model will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the structural schematic diagram of the present utility model.

[0021] Figure 2 is the partial structural schematic diagram of the present utility model.

[0022] Figure 3 is the partial structural schematic diagram of the present utility model in another direction.

[0023] Figure 4 is the structural schematic diagram of the tunnel core-pulling structure.

[0024] Figure 5 is the structural schematic diagram of the upper mold for forming the automotive side panel.

[0025] In the figure: lower mold 1 for forming the automotive side panel, upper mold 2 for forming the automotive side panel, injection part 3, lower forming surface 4 of the side panel, upper forming surface 5 of the side panel, tunnel core-pulling structure 6, core-pulling limiting part 7, combined ejector 8, side core-pulling slide seat 9, side panel groove forming protrusion 10, slide seat driving connecting part 11, vertical connecting seat 12, limiting inclined groove 13, inclined limiting block 14, oil cylinder 15, in-mold forming angled ejector block 16, straight ejector rod 17, angled ejector rod 18, ejection connecting slide plate 19, bottom plate 20, anti-deviation iron 21, injection main board 22, limiting upright column 30. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present utility model will be further described below with reference to the drawings.

[0027] As Figures 1-5As shown in the figure, a front mold tunnel core-pulling mechanism for an automobile side panel injection mold includes a lower mold 1 for forming the automobile side panel and an upper mold 2 for forming the automobile side panel. An injection molded part 3 is provided above the upper mold 2 for forming the automobile side panel. A lower side panel forming surface 4 is provided in the lower mold 1 for forming the automobile side panel. An upper side panel forming surface 5 is provided in the upper mold 2 for forming the automobile side panel. The position of the lower side panel forming surface 4 corresponds to and the shape matches that of the upper side panel forming surface 5. A tunnel core-pulling structure 6 that can move along one side close to or away from the lower side panel forming surface 4 is provided in the upper mold 2 for forming the automobile side panel. A core-pulling limit member 7 is also provided in the upper mold 2 for forming the automobile side panel. The tunnel core-pulling structure 6 is slidably engaged with the core-pulling limit member 7. A combined ejector 8 is provided below the lower mold 1 for forming the automobile side panel.

[0028] In this embodiment, during the injection molding process, the lower mold 1 for forming the automobile side panel and the upper mold 2 for forming the automobile side panel are moved closer to each other so that the lower side panel forming surface 4 and the upper side panel forming surface 5 are abutted and matched to form a complete cavity. The molten material is injected into the cavity through the injection molded part 3. The tunnel core-pulling structure 6 is used to simultaneously injection mold the groove structure on the side of the automobile side panel, eliminating the need for secondary processing and shortening the process. After the molding is completed, the tunnel core-pulling structure 6 is moved away from the plastic part. The core-pulling limit member 7 plays a role in limiting the tunnel core-pulling structure 6 to prevent the tunnel core-pulling structure 6 from shifting in position during the movement, with high core-pulling accuracy. Then, the mold is opened, and the combined ejector 8 is used to fully eject the molded plastic part, with a large ejection area.

[0029] Combined Figures 1-5 As shown in the figure, the tunnel core-pulling structure 6 includes a side core-pulling slide base 9 provided in the upper mold 2 for forming the automobile side panel. A side panel groove forming protrusion 10 is provided inside the side core-pulling slide base 9. The position of the side panel groove forming protrusion 10 corresponds to and the shape matches that of the lower side panel forming surface 4.

[0030] Specifically, during injection molding, the side panel groove forming protrusion 10 inside the side core-pulling slide base 9 corresponds to the lower side panel forming surface 4 to simultaneously mold the groove structure on the side of the automobile side panel, eliminating the need for secondary processing and shortening the process.

[0031] Combined Figure 3 、 Figure 4As shown, a slide drive connector 11 capable of reciprocating linear motion in a vertical direction is provided in the automobile side panel forming upper mold 2, and the slide drive connector 11 is slidably matched with the side core pulling slide 9, and the slide drive connector 11 includes a vertical connecting seat 12 arranged in the automobile side panel forming upper mold 2, and a limiting inclined groove 13 is provided in the vertical connecting seat 12, and the side core pulling slide 9 has an oblique limiting block 14 integrally formed with the side core pulling slide 9, and the oblique limiting block 14 extends into the limiting inclined groove 13 and the inclined surface of the oblique limiting block 14 is slidably matched with the inclined surface of the limiting inclined groove 13, and an oil cylinder 15 is provided in the automobile side panel forming upper mold 2, and the power shaft of the oil cylinder 15 is connected to the vertical connecting seat 12, and the core pulling limiting member 7 includes a limiting column 30 arranged in the automobile side panel forming upper mold 2, and the side core pulling slide 9 is slidably matched with the limiting column 30.

[0032] In this embodiment, when it is necessary to move the side core pulling slide 9, the oil cylinder 15 is started, and the vertical connecting seat 12 is driven to move upward by the oil cylinder 15. The inclined sliding cooperation between the inclined limit block 14 and the limiting inclined groove 13 drives the side core pulling slide 9 to move to the side away from the lower forming surface 4 of the side enclosure to realize side core pulling. The limiting column 30 can limit the upper side of the side core pulling slide 9 to prevent the side core pulling slide 9 from jumping up and down during the core pulling process, and the core pulling stability is relatively strong.

[0033] The combined ejector 8 includes an in-mold inclined ejector block 16 and a straight ejector rod 17. The in-mold inclined ejector block 16 corresponds to the position of the lower molding surface 4 and has a matching shape. An inclined ejector rod 18 is provided at the bottom of the in-mold inclined ejector block 16. The inclined ejector rod 18 and the straight ejector rod 17 are arranged alternately.

[0034] In this embodiment, during the injection molding process, the inclined ejector block 16 formed in the mold cooperates with the lower molding surface 4 to form the lower structure of the plastic part. After the injection molding is completed, the mold is opened, the inclined ejector rod 18 and the straight ejector rod 17 are moved, and an inclined and straight ejector combined ejection structure is adopted to eject and demold the molded plastic part in all directions, with a large ejection area.

[0035] Combination Figures 1-3 As shown, an ejection connecting slide plate 19 is provided below the lower mold 1 for forming the automobile side panel, and the inclined ejector rod 18 and the straight ejector rod 17 are respectively connected to the ejection connecting slide plate 19 .

[0036] In this embodiment, the ejection connecting slide plate 19 is used to connect and fix the inclined ejector rod 18 and the straight ejector rod 17 .

[0037] Combination Figure 1 , Figure 2 As shown, a bottom plate 20 is provided below the ejection connection slide plate 19 , and anti-deflection irons 21 are provided on both sides of the bottom plate 20 , and the ejection connection slide plate 19 and the anti-deflection irons 21 are slidably matched.

[0038] In this embodiment, during the ejection process, the ejection connecting slide plate 19 and the anti-deviation iron 21 are in sliding fit. The anti-deviation iron 21 plays a limiting role on the ejection connecting slide plate 19 to ensure the accuracy of ejection.

[0039] Combined with Figure 1 As shown, the injection molded part 3 includes an injection main board 22 disposed above the automotive side panel forming upper mold 2.

[0040] In this embodiment, the molten material is injected into the cavity through the injection main board 22.

[0041] The working principle of the present utility model is:

[0042] During the injection molding process, the automotive side panel forming lower mold 1 and the automotive side panel forming upper mold 2 are brought closer to each other, so that the lower side panel forming surface 4 and the upper side panel forming surface 5 are in abutting fit to form a complete cavity. The molten material is injected into the cavity through the injection main board 22. During injection molding, the side panel groove forming protrusion 10 inside the side core-pulling slide base 9 corresponds to the lower side panel forming surface 4 to synchronously form the groove structure on the side of the automotive side panel without the need for secondary processing, shortening the process. When it is necessary to move the side core-pulling slide base 9, the oil cylinder 15 is started. The oil cylinder 15 drives the vertical connecting seat 12 to move upward. Through the sliding fit of the inclined surface between the inclined limiting block 14 and the limiting inclined groove 13, the side core-pulling slide base 9 is driven to move away from the lower side panel forming surface 4 to achieve side core-pulling. The limiting upright column 30 can play a limiting role on the upper side of the side core-pulling slide base 9 to prevent the side core-pulling slide base 9 from jumping up and down during the core-pulling process, and the core-pulling stability is relatively strong.

[0043] During the injection molding process, the in-mold forming angled ejector block 16 and the lower forming surface 4 cooperate to form the lower structure of the plastic part. After injection molding, the mold is opened, and the angled ejector rod 18 and the straight ejector rod 17 are moved. An angled and straight combined ejection structure is adopted to eject and demold the formed plastic part in all directions. The ejection area is large. The ejection connecting slide plate 19 is used to connect and fix the angled ejector rod 18 and the straight ejector rod 17. During the ejection process, the ejection connecting slide plate 19 and the anti-deviation iron 21 are in sliding fit. The anti-deviation iron 21 plays a limiting role on the ejection connecting slide plate 19 to ensure the accuracy of ejection.

[0044] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the technical field to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present utility model.

[0045] Although this article uses the terms such as automobile side panel molding lower mold 1, automobile side panel molding upper mold 2, injection molding part 3, side panel lower molding surface 4, side panel upper molding surface 5, tunnel core pulling structure 6, core pulling limiter 7, combined ejector 8, side core pulling slide 9, side panel groove molding protrusion 10, slide drive connector 11, vertical connecting seat 12, limit inclined groove 13, oblique limiter 14, oil cylinder 15, in-mold molding inclined ejector block 16, straight ejector 17, inclined ejector 18, ejection connection slide plate 19, bottom plate 20, anti-deflection iron 21, injection molding main board 22, limiter column 30, etc. more frequently, it does not exclude the possibility of using other terms. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the utility model, and interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A front mold tunnel core-pulling mechanism for an automobile side panel injection mold, comprising an automobile side panel forming lower mold (1) and an automobile side panel forming upper mold (2), characterized in that, Above the upper die (2) for forming the automobile side panel, there is an injection molded part (3). Inside the lower die (1) for forming the automobile side panel, there is a lower part forming surface (4) of the side panel. Inside the upper die (2) for forming the automobile side panel, there is an upper part forming surface (5) of the side panel. The position of the lower part forming surface (4) of the side panel corresponds to and the shape matches that of the upper part forming surface (5) of the side panel. Inside the upper die (2) for forming the automobile side panel, there is a tunnel core-pulling structure (6) that can move along one side close to or away from the lower part forming surface (4) of the side panel. Inside the upper die (2) for forming the automobile side panel, there is also a core-pulling limiting part (7). The tunnel core-pulling structure (6) is in sliding fit with the core-pulling limiting part (7). Below the lower die (1) for forming the automobile side panel, there is a combined ejector part (8).

2. The front mold tunnel core-pulling mechanism of the automobile side panel injection mold according to claim 1, characterized in that The tunnel core-pulling structure (6) includes a side core-pulling slide base (9) arranged inside the upper die (2) for forming the automobile side panel. Inside the side of the side core-pulling slide base (9), there is a side panel groove forming protrusion (10). The position of the side panel groove forming protrusion (10) corresponds to and the shape matches that of the lower part forming surface (4) of the side panel.

3. The front mold tunnel core-pulling mechanism of the automobile side panel injection mold according to claim 2, characterized in that, Inside the upper die (2) for forming the automobile side panel, there is a slide base driving connecting part (11) that can perform reciprocating linear motion in the vertical direction. The slide base driving connecting part (11) is in sliding fit with the side core-pulling slide base (9).

4. The front mold tunnel core-pulling mechanism of the automobile side panel injection mold according to claim 3, characterized in that, The slide base driving connecting part (11) includes a vertical connecting seat (12) arranged inside the upper die (2) for forming the automobile side panel. Inside the vertical connecting seat (12), there is a limiting inclined groove (13). On the side core-pulling slide base (9), there is an inclined limiting block (14) integrally formed with the side core-pulling slide base (9). The inclined limiting block (14) extends into the limiting inclined groove (13), and the inclined surface of the inclined limiting block (14) is in sliding fit with the inclined surface of the limiting inclined groove (13).

5. The front mold tunnel core-pulling mechanism of the automobile side panel injection mold according to claim 4, characterized in that Inside the upper die (2) for forming the automobile side panel, there is an oil cylinder (15). The power shaft of the oil cylinder (15) is connected to the vertical connecting seat (12). The core-pulling limiting part (7) includes a limiting upright column (30) arranged inside the upper die (2) for forming the automobile side panel. The side core-pulling slide base (9) is in sliding fit with the limiting upright column (30).

6. The front mold tunnel core-pulling mechanism of the automobile side panel injection mold according to claim 5, characterized in that The combined ejector part (8) includes an in-mold formed inclined ejector block (16) and a straight ejector rod (17). The position of the in-mold formed inclined ejector block (16) corresponds to and the shape matches that of the lower forming surface (4).

7. The front mold tunnel core-pulling mechanism of the automobile side panel injection mold according to claim 6, characterized in that, At the bottom of the in-mold formed inclined ejector block (16), there is an inclined ejector rod (18). The inclined ejector rod (18) and the straight ejector rod (17) are arranged alternately.

8. The front mold tunnel core-pulling mechanism of the automobile side panel injection mold according to claim 7, characterized in that, Below the lower die (1) for forming the automobile side panel, there is an ejector connecting slide plate (19). The inclined ejector rod (18) and the straight ejector rod (17) are respectively connected to the ejector connecting slide plate (19).

9. The front mold tunnel core-pulling mechanism of the automobile side panel injection mold according to claim 8, characterized in that, Below the ejector connecting slide plate (19), there is a bottom plate (20). On both sides of the bottom plate (20), there are anti-deviation positioning irons (21). The ejector connecting slide plate (19) is in sliding fit with the anti-deviation positioning irons (21).

10. The front mold tunnel core-pulling mechanism of the automobile side panel injection mold according to claim 9, characterized in that, The injection molded part (3) includes an injection molded main board (22) arranged above the upper die (2) for forming the automobile side panel.

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