Bicolor tail lamp side guard plate injection mold large sliding block built-in small sliding block demolding mechanism

Abstract

The utility model belongs to the technical field of molds, and particularly relates to a demolding mechanism for a large sliding block and a small sliding block in an injection mold for a double-color tail lamp side guard plate. The injection molding main board comprises an injection molding main board body. In the injection molding process, a melt flow with one color is injected from the first injection molding hole and enters the cavity through the small sliding block demolding assembly arranged in the large sliding block, and a melt flow with the other color is injected from the second injection molding hole and enters the protruding forming part of the tail lamp side protection plate to be used for forming a protruding structure of a plastic part. A double-hole structure is adopted for double-color injection molding, after injection molding is completed, a small sliding block demolding assembly arranged in a large sliding block is moved, a molded plastic part is demolded and ejected out through the small sliding block demolding assembly arranged in the large sliding block, an injection molding and ejection integrated structure is adopted, an ejection and demolding structure does not need to be additionally arranged, the space needed in a mold is reduced, and the injection molding efficiency is improved. Meanwhile, residual materials at the injection molding position can be cleaned more conveniently after ejection, and smooth injection molding next time is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and relates to a demolding mechanism with a small slider built in a large slider for an injection mold of a two-color taillight side guard plate. Background Technique

[0002] An injection mold is a tool for producing plastic products and also a tool for endowing plastic products with a complete structure and precise dimensions. Injection molding is a processing method used in mass production of some parts with complex shapes. Specifically, it means injecting the heat-melted plastic into the mold cavity under high pressure by an injection molding machine, and after cooling and solidifying, a formed product is obtained. Injection molds are widely used, and injection molds are needed in the manufacturing process of automobile taillights. In the injection process of the existing injection mold for a two-color taillight side guard plate, its injection structure and ejection and demolding structure are generally split-type. Such a design requires a large space inside the mold, and it is difficult to clean the residual materials at the injection part after injection molding. Therefore, there is an urgent need to design a demolding mechanism with a small slider built in a large slider for an injection mold of a two-color taillight side guard plate 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 in-mold rotary molding mechanism for an injection mold of a two-color automobile taillight guard plate [Application No.: 202123446556.8], which includes an injection upper mold, and a fixed side guard plate seat is arranged below the injection upper mold. In the injection process of the utility model, the guard plate forming insert is closely fitted with the in-mold rotary molding component to form a complete cavity, and the molten material is injected into the cavity through the injection upper mold for injection. After injection is completed, the mold is opened, so that the connecting base and the in-mold rotary molding component are separated from the fixed side guard plate seat. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a demolding mechanism with a small slider built in a large slider for an injection mold of a two-color taillight side guard plate in view of the above problems.

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

[0006] A demolding mechanism with a small slider built in a large slider for an injection mold of a two-color taillight side guard plate includes an injection main board, a first injection hole and a second injection hole are arranged in the injection main board, a demolding component with a small slider built in a large slider is arranged below the first injection hole, a taillight side guard plate convex forming part is arranged below the second injection hole, the demolding component with a small slider built in a large slider and the taillight side guard plate convex forming part are arranged in a staggered manner, and the first injection hole and the second injection hole are parallel to each other.

[0007] In the above-mentioned demolding mechanism of the small slider built inside the large slider of the injection mold for the two-color taillight side guard plate, the small-slider built-inside-large-slider demolding assembly includes a cavity-forming large slider arranged below the first injection hole. A small-slider demolding connecting piece is arranged inside the cavity-forming large slider, and the small-slider demolding connecting piece is embedded inside the cavity-forming large slider.

[0008] In the above-mentioned demolding mechanism of the small slider built inside the large slider of the injection mold for the two-color taillight side guard plate, the small-slider demolding connecting piece includes a demolding connecting small slider arranged inside the cavity-forming large slider. The demolding connecting small slider and the cavity-forming large slider are connected by two connecting rods.

[0009] In the above-mentioned demolding mechanism of the small slider built inside the large slider of the injection mold for the two-color taillight side guard plate, an injection connecting channel is arranged inside the demolding connecting small slider, and the injection connecting channel is communicated with the first injection hole.

[0010] In the above-mentioned demolding mechanism of the small slider built inside the large slider of the injection mold for the two-color taillight side guard plate, a side communicating groove is arranged on the side of the injection connecting channel, and a corresponding part is arranged at the bottom of the injection main board. The corresponding part is communicated with the side communicating groove.

[0011] In the above-mentioned demolding mechanism of the small slider built inside the large slider of the injection mold for the two-color taillight side guard plate, the corresponding part includes a corresponding discharge groove arranged at the bottom of the injection main board, and the corresponding discharge groove is communicated with the side communicating groove.

[0012] In the above-mentioned demolding mechanism of the small slider built inside the large slider of the injection mold for the two-color taillight side guard plate, a side through groove is arranged on the side of the cavity-forming large slider, and the side through groove is communicated with the corresponding discharge groove.

[0013] In the above-mentioned demolding mechanism of the small slider built inside the large slider of the injection mold for the two-color taillight side guard plate, an injection bottom hole is arranged in the middle of the cavity-forming large slider, and the injection bottom hole is communicated with the injection connecting channel.

[0014] In the above-mentioned demolding mechanism of the small slider built inside the large slider of the injection mold for the two-color taillight side guard plate, the raised forming part of the taillight side guard plate includes a raised forming cavity of the taillight side guard plate arranged below the second injection hole. The raised forming cavity of the taillight side guard plate and the second injection hole are arranged staggeredly.

[0015] In the above-mentioned demolding mechanism of the small slider built inside the large slider of the injection mold for the two-color taillight side guard plate, a mold-closing cavity is arranged at the bottom of the injection main board.

[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 molten material of one color is injected from the first injection hole, enters the mold cavity through the small slider demolding assembly built in the large slider, and the molten material of another color is injected from the second injection hole and enters the raised forming part of the taillight side guard plate to form the raised structure of the plastic part. Double-color injection molding is carried out using a double-hole structure. After the injection molding is completed, the small slider demolding assembly built in the large slider is moved, and the molded plastic part is demolded and ejected through the small slider demolding assembly built in the large slider. An integrated injection and ejection structure is adopted, eliminating the need for an additional ejection and demolding structure, reducing the space required in the mold, and facilitating the cleaning of the residual material at the injection site after ejection, ensuring smooth injection for the next time.

[0018] 2. During the injection molding process of the present utility model, the molten material of one color is injected into the injection connection channel through the first injection hole, and then injected into the mold cavity through the injection bottom hole. At the same time, the molten material also flows into the mold cavity synchronously from the side of the concave cavity forming large slider along the trajectories of the side communication groove, the corresponding discharge groove, and the side through groove, accelerating the injection rate.

[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 structural schematic diagram of the present utility model in another direction.

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

[0023] Figure 4 is the structural schematic diagram of the small slider demolding module built in the large slider.

[0024] In the figure: injection molding main board 1, first injection hole 2, second injection hole 3, small slider demolding assembly built in large slider 4, raised forming part of taillight side guard plate 5, concave cavity forming large slider 6, small slider demolding connecting piece 7, demolding connecting small slider 8, connecting rod 9, injection connection channel 10, side communication groove 11, corresponding part 12, corresponding discharge groove 13, side through groove 14, injection bottom hole 15, raised forming cavity of taillight side guard plate 16, mold closing concave cavity 17. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present utility model will be further described below with reference to the accompanying drawings.

[0026] As Figures 1-4As shown in the figure, a demolding mechanism with a small slider built inside a large slider for an injection mold of a two-color taillight side guard plate includes an injection main board 1. A first injection hole 2 and a second injection hole 3 are provided inside the injection main board 1. A demolding assembly with a small slider built inside a large slider 4 is provided below the first injection hole 2. A convex forming part 5 of the taillight side guard plate is provided below the second injection hole 3. The demolding assembly with a small slider built inside a large slider 4 and the convex forming part 5 of the taillight side guard plate are arranged staggeredly. The first injection hole 2 and the second injection hole 3 are parallel to each other.

[0027] In this embodiment, during the injection molding process, the molten material of one color is injected from the first injection hole 2, enters the mold cavity through the demolding assembly with a small slider built inside a large slider 4, and the molten material of the other color is injected from the second injection hole 3 and enters the convex forming part 5 of the taillight side guard plate to form the convex structure of the plastic part. Double-hole structure is adopted for two-color injection molding. After the injection molding is completed, the demolding assembly with a small slider built inside a large slider 4 is moved, and the molded plastic part is demolded and ejected through the demolding assembly with a small slider built inside a large slider 4. The injection and ejection integrated structure is adopted, and there is no need to additionally set up a demolding structure, which reduces the space required inside the mold. At the same time, the residual material at the injection place can be more conveniently cleaned after ejection, ensuring smooth injection molding next time.

[0028] Combined with Figures 1-4 As shown in the figure, the demolding assembly with a small slider built inside a large slider 4 includes a cavity-forming large slider 6 provided below the first injection hole 2. A small slider demolding connecting piece 7 is provided inside the cavity-forming large slider 6. The small slider demolding connecting piece 7 is embedded inside the cavity-forming large slider 6. The small slider demolding connecting piece 7 includes a demolding connecting small slider 8 provided inside the cavity-forming large slider 6. The demolding connecting small slider 8 and the cavity-forming large slider 6 are connected by two connecting rods 9. An injection connecting channel 10 is provided inside the demolding connecting small slider 8. The injection connecting channel 10 is communicated with the first injection hole 2. A side communicating groove 11 is opened on the side of the injection connecting channel 10. A corresponding part 12 is provided at the bottom of the injection main board 1. The corresponding part 12 is communicated with the side communicating groove 11. The corresponding part 12 includes a corresponding discharge groove 13 provided at the bottom of the injection main board 1. The corresponding discharge groove 13 is communicated with the side communicating groove 11. A side through groove 14 is provided on the side of the cavity-forming large slider 6. The side through groove 14 is communicated with the corresponding discharge groove 13. An injection bottom hole 15 is provided in the middle of the cavity-forming large slider 6. The injection bottom hole 15 is communicated with the injection connecting channel 10.

[0029] In this embodiment, during the injection molding process, a molten material of one color is injected into the injection connection channel 10 through the first injection hole 2, and then into the cavity through the injection bottom hole 15. At the same time, the molten material also flows into the cavity synchronously from the side of the concave cavity forming large slider 6 along the trajectories of the side communication groove 11, the corresponding discharge groove 13, and the side through groove 14, which speeds up the injection molding rate. After the injection molding is completed, the demolding connection small slider 8 is moved, and the concave cavity forming large slider 6 is driven by the demolding connection small slider 8 to eject the molded plastic part. An integrated injection molding and ejection structure is adopted, eliminating the need for an additional ejection and demolding structure, reducing the space required in the mold. At the same time, the residual material at the injection molding location can be more conveniently cleaned after ejection, ensuring smooth injection molding next time.

[0030] Combined with Figures 1-2 As shown, the taillight side guard plate convex forming part 5 includes a taillight side guard plate convex forming cavity 16 provided below the second injection hole 3, and the taillight side guard plate convex forming cavity 16 is arranged staggeredly with the second injection hole 3.

[0031] In this embodiment, during injection molding, a molten material of another color is injected from the second injection hole 3, and the taillight side guard plate convex forming cavity 16 is used to form the convex structure of the plastic part.

[0032] Combined with Figures 1-2 As shown, a mold closing concave cavity 17 is provided at the bottom of the injection main board 1.

[0033] In this embodiment, the mold closing concave cavity 17 serves the function of precise mold closing.

[0034] The working principle of the present utility model is:

[0035] During the injection molding process, a molten material of one color is injected into the injection connection channel 10 through the first injection hole 2, and then into the cavity through the injection bottom hole 15. At the same time, the molten material also flows into the cavity synchronously from the side of the concave cavity forming large slider 6 along the trajectories of the side communication groove 11, the corresponding discharge groove 13, and the side through groove 14, which speeds up the injection molding rate. After the injection molding is completed, the demolding connection small slider 8 is moved, and the concave cavity forming large slider 6 is driven by the demolding connection small slider 8 to eject the molded plastic part. An integrated injection molding and ejection structure is adopted, eliminating the need for an additional ejection and demolding structure, reducing the space required in the mold. At the same time, the residual material at the injection molding location can be more conveniently cleaned after ejection, ensuring smooth injection molding next time. A molten material of another color is injected from the second injection hole 3, the taillight side guard plate convex forming cavity 16 is used to form the convex structure of the plastic part, and the mold closing concave cavity 17 serves the function of precise mold closing.

[0036] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains may make various modifications or supplements to the described specific embodiments or use similar means for substitution, but will not deviate from the spirit of the present utility model.

[0037] Although terms such as injection molding main board 1, first injection hole 2, second injection hole 3, large slider with built-in small slider demolding assembly 4, taillight side guard plate convex molding part 5, concave cavity forming large slider 6, small slider demolding connecting piece 7, demolding connecting small slider 8, connecting rod 9, injection molding connection channel 10, side communication groove 11, corresponding part 12, corresponding discharge groove 13, side through groove 14, injection molding bottom hole 15, taillight side guard plate convex molding cavity 16, mold clamping concave cavity 17 are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is only for more conveniently describing and explaining the essence of the present utility model, and interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. A two-color taillight side guard plate injection mold has a large slider with a built-in small slider demoulding mechanism, comprising an injection molding main board (1), characterized in that: The injection molding main board (1) is provided with a first injection molding hole (2) and a second injection molding hole (3); a large slider with a small slider demoulding component (4) is provided below the first injection molding hole (2); a tail light side guard plate protruding molding portion (5) is provided below the second injection molding hole (3); the large slider with a small slider demoulding component (4) and the tail light side guard plate protruding molding portion (5) are arranged alternately; and the first injection molding hole (2) and the second injection molding hole (3) are parallel to each other.

2. The double-color taillight side guard plate injection mold according to claim 1 has a large slider with a built-in small slider demoulding mechanism, characterized in that: The large slider with built-in small slider demoulding assembly (4) comprises a cavity-molded large slider (6) arranged below the first injection hole (2), a small slider demoulding connector (7) being arranged inside the cavity-molded large slider (6), and the small slider demoulding connector (7) being embedded in the cavity-molded large slider (6).

3. The demoulding mechanism of the double-color taillight side guard plate injection mold with a large slider built in a small slider according to claim 2 is characterized in that: The small slider demoulding connector (7) comprises a demoulding connecting small slider (8) arranged in the cavity forming large slider (6), and the demoulding connecting small slider (8) is connected to the cavity forming large slider (6) via two connecting rods (9).

4. The demoulding mechanism of the double-color taillight side guard plate injection mold with a large slider built in a small slider according to claim 3 is characterized in that: An injection molding connection channel (10) is provided in the demoulding connection small slider (8), and the injection molding connection channel (10) is connected to the first injection molding hole (2).

5. The demoulding mechanism of the large slider of the injection mold for the two-color taillight side guard plate according to claim 4 is characterized in that: The side of the injection molding connecting channel (10) is provided with a side communication groove (11), and the bottom of the injection molding main board (1) is provided with a corresponding portion (12), and the corresponding portion (12) is connected to the side communication groove (11).

6. The demoulding mechanism of the double-color taillight side guard plate injection mold with a large slider built in a small slider according to claim 5, characterized in that: The corresponding portion (12) comprises a corresponding discharge groove (13) arranged at the bottom of the injection molded main board (1), and the corresponding discharge groove (13) is connected to the side connecting groove (11).

7. The demoulding mechanism of the double-color taillight side guard plate injection mold with a large slider built in a small slider according to claim 6, characterized in that: The side of the cavity forming large sliding block (6) is provided with a side through groove (14), and the side through groove (14) is connected to the corresponding discharge groove (13).

8. The demoulding mechanism of the double-color taillight side guard plate injection mold with a large slider built in a small slider according to claim 7, characterized in that: An injection molding bottom hole (15) is provided in the middle of the large concave cavity molding slide block (6), and the injection molding bottom hole (15) is connected to the injection molding connecting channel (10).

9. The demoulding mechanism of the double-color taillight side guard plate injection mold with a large slider built in a small slider according to claim 8, characterized in that: The taillight side guard plate protrusion molding portion (5) comprises a taillight side guard plate protrusion molding cavity (16) arranged below the second injection molding hole (3), and the taillight side guard plate protrusion molding cavity (16) and the second injection molding hole (3) are arranged in an alternating manner.

10. The double-color taillight side guard plate injection mold according to claim 9, wherein the large slider has a built-in small slider demoulding mechanism, characterized in that: The bottom of the injection molded main board (1) is provided with a mold cavity (17).

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