Automobile large-area rear tail door inner plate injection mold based on multi-point reverse pouring technology

Abstract

The utility model provides an automobile large-area rear tail door inner plate injection mold based on a multi-point reverse pouring technology, and belongs to the technical field of molds. The injection mold comprises an upper mold plate, a lower mold plate and a bottom plate which are sequentially arranged from top to bottom, a forming cavity is formed between the upper mold plate and the lower mold plate, a top plate and a glue inlet module are arranged between the bottom plate and the lower mold plate, and the glue inlet module comprises an injection molding liquid splitter plate arranged on the lower side of the top plate. An injection molding liquid splitter plate in the glue feeding module splits injection molding liquid and then injects the injection molding liquid into a molding cavity from the lower part of the molding cavity through a plurality of injection molding pipes, so that a glue opening is formed in the back surface of the tail door inner plate, and the influence of the glue opening on the quality of the outer surface of a product is reduced; the protection structure can protect the contact part of the injection molding pipe and the top plate so as to prevent the injection molding pipe from being damaged when the top plate acts.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to an injection mold for an automobile large-area rear tailgate inner panel based on a multi-point reverse pouring technology. Background Art

[0002] The inner panel of the rear tailgate of an automobile is generally formed by injection molding. In the prior art, the mold of the inner panel of the rear tailgate adopts front injection molding during injection molding, that is, the injection molding plate is arranged on the upper side of the molding cavity, and the injection molding tube injects the injection liquid into the molding cavity from the upper side of the molding cavity during injection molding. However, this will cause a glue hole to exist on the outer surface of the inner panel of the automobile, which will affect the outer surface quality of the product.

[0003] For example, a Chinese patent discloses an injection mold for an automobile tailgate interior panel [application number: 202321554262.3], which includes a fixed mold plate, a movable mold cavity plate, a top plate and a plurality of inclined ejector blocks, wherein the inclined ejector blocks are connected to the top plate through inclined ejector rods, and the inclined ejector blocks are mounted on the movable mold cavity plate, and together with the movable mold cavity plate, form a cavity for molding a portable buckle on the interior panel body, and two first core pulling mechanisms and a single second core pulling mechanism are installed on the movable mold plate, and the first core pulling mechanism is located on both sides of the second core pulling mechanism, wherein the first core pulling mechanism is used to mold a mounting hole on the interior panel body, and the second core pulling mechanism is used to mold a central through hole on the interior panel body. Utility Model Content

[0004] The utility model aims to solve the above problems and provides an injection mold for a large-area rear tailgate inner panel of an automobile based on a multi-point reverse pouring technology.

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

[0006] A large-area rear tailgate inner panel injection mold for an automobile based on a multi-point back-casting technology, comprising an upper template, a lower template and a bottom plate arranged in sequence from top to bottom, a molding cavity being arranged between the upper template and the lower template, a top plate and a glue feeding module being arranged between the bottom plate and the lower template, the glue feeding module comprising an injection molding liquid diverter plate arranged at the lower side of the top plate, a plurality of injection molding tubes vertically penetrating the top plate and the lower template and connected to the bottom of the molding cavity being connected to the injection molding liquid diverter plate, and a protective structure being arranged on the injection molding tubes.

[0007] In the above-mentioned large-area automobile tailgate inner panel injection mold based on the multi-point back-casting technology, the protective structure includes a protective sleeve sleeved on the injection tube, and the protective sleeve is slidably matched with the top plate.

[0008] In the above-mentioned large-area automobile tailgate inner panel injection mold based on the multi-point back-casting technology, the protective sleeve is arranged in the middle section of the injection tube.

[0009] In the above-mentioned large-area automobile tailgate inner panel injection mold based on the multi-point back-casting technology, a combined ejection mechanism connected to the bottom of the molding cavity is arranged on the top plate.

[0010] In the above-mentioned large-area automobile tailgate inner panel injection mold based on the multi-point back-pouring technology, the combined ejection mechanism includes an outer straight ejection structure, an intermediate straight ejection structure and a multi-directional inclined ejection structure.

[0011] In the above-mentioned large-area automobile tailgate inner panel injection mold based on multi-point back-casting technology, the peripheral straight top structure includes a plurality of peripheral straight top blocks arranged in a rectangular ring shape, and the peripheral straight top blocks are connected to the top plate through peripheral straight top rods.

[0012] In the above-mentioned large-area automobile tailgate inner panel injection mold based on multi-point back-pouring technology, the intermediate straight top structure includes an intermediate straight top block arranged on the front side of the lower mold plate and arranged in a straight line, and the intermediate straight top block is connected to the top plate through an intermediate straight top rod.

[0013] In the above-mentioned large-area automobile tailgate inner panel injection mold based on the multi-point back-casting technology, the middle straight top structure also includes a plurality of vertical top rods, and the tops of the vertical top rods are connected to the molding cavity.

[0014] In the above-mentioned large-area automobile tailgate inner panel injection mold based on multi-point back-casting technology, the multi-directional inclined top structure includes a plurality of inclined top blocks arranged on the lower mold plate, and the inclined top blocks are rotatably connected to the top plate through inclined top rods.

[0015] In the above-mentioned large-area automobile tailgate inner panel injection mold based on the multi-point back-casting technology, a plurality of supporting blocks are further provided on the bottom plate, and the top plate is supported on the supporting blocks.

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

[0017] 1. The injection liquid diverter plate in the glue inlet module can divert the injection liquid and inject the injection liquid into the molding cavity from the bottom of the molding cavity through a number of injection tubes, so that the glue port is formed on the back of the tailgate inner plate, thereby reducing the impact of the glue port on the quality of the product's outer surface. The protective structure can protect the contact part between the injection tube and the top plate to prevent the injection tube from being damaged when the top plate moves.

[0018] 2. By providing a protective cover on the injection molding tube, it is possible to prevent the top plate from bumping into the injection molding tube during movement and causing damage to the injection molding tube.

[0019] Other advantages, objectives and features of the present invention will be embodied 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

[0020] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0021] Figure 2 It is a structural diagram of the lower template;

[0022] Figure 3 It is a structural schematic diagram of the combined ejection mechanism;

[0023] Figure 4 It is a schematic diagram of the structure of the protective structure;

[0024] Figure 5 It is a structural diagram of the glue feeding module.

[0025] In the figure, an upper template 1, a lower template 2, a bottom plate 3, a molding cavity 4, a top plate 5, a glue feeding module 6, an injection liquid diverter plate 7, an injection tube 8, a protective structure 9, a protective sleeve 10, an outer straight top structure 11, an intermediate straight top structure 12, a multi-directional inclined top structure 13, an outer straight top block 14, an outer straight top rod 15, an intermediate straight top block 16, an intermediate straight top rod 17, a vertical top rod 18, an inclined top block 19, an inclined top rod 20, and a supporting block 21. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 5 As shown, an injection mold for a large-area rear tailgate inner panel of an automobile based on a multi-point back-casting technology comprises an upper template 1, a lower template 2 and a bottom plate 3 which are arranged in sequence from top to bottom, a molding cavity 4 is arranged between the upper template 1 and the lower template 2, a top plate 5 and a glue feeding module 6 are arranged between the bottom plate 3 and the lower template 2, the glue feeding module 6 comprises an injection liquid diverter plate 7 which is arranged on the lower side of the top plate 5, a plurality of injection molding tubes 8 which vertically penetrate the top plate 5 and the lower template 2 and are connected to the bottom of the molding cavity 4 are connected to the injection molding liquid diverter plate 7, and a protective structure 9 is arranged on the injection molding tube 8.

[0027] In the utility model, the injection liquid diverter plate in the glue feeding module can inject the injection liquid into the molding cavity from the bottom of the molding cavity through a plurality of injection molding tubes after diverting the injection liquid, so that the glue port is formed on the back side of the tailgate inner plate, thereby reducing the influence of the glue port on the outer surface quality of the product. The protective structure can protect the contact part between the injection molding tube and the top plate to prevent the injection molding tube from being damaged when the top plate moves.

[0028] Specifically, the protective structure 9 includes a protective sleeve 10 sleeved on the injection molding tube 8, the protective sleeve 10 is slidably matched with the top plate 5, and the protective sleeve 10 is arranged in the middle section of the injection molding tube 8. By arranging the protective sleeve on the injection molding tube, it is possible to prevent the top plate from bumping into the injection molding tube when moving and causing damage to the injection molding tube.

[0029] Specifically, the top plate 5 is provided with a combined ejection mechanism connected to the bottom of the molding cavity 4, and the combined ejection mechanism includes a peripheral straight top structure 11, an intermediate straight top structure 12, and a multi-directional inclined top structure 13. The combined ejection mechanism composed of the peripheral straight top structure 11, the intermediate straight top structure 12, and the multi-directional inclined top structure 13 can apply a uniform thrust to each position of the product when the product is ejected, so as to prevent the product from being damaged during ejection.

[0030] Specifically, the peripheral straight top structure 11 includes a plurality of peripheral straight top blocks 14 arranged in a rectangular ring shape, and the peripheral straight top blocks 14 are connected to the top plate 5 through peripheral straight top rods 15. When the top plate moves upward, the peripheral straight top rods can drive the peripheral straight top blocks to apply a vertical upward thrust to the outer edge of the product.

[0031] Specifically, the middle straight top structure 12 includes a middle straight top block 16 arranged in a straight line at the front side of the lower mold plate 2, and the middle straight top block 16 is connected to the top plate 5 through a middle straight top rod 17. When the top plate moves upward, the middle straight top block can be driven by the middle straight top rod to apply a vertical upward thrust to the front side of the product.

[0032] Specifically, the middle straight top structure 12 also includes a plurality of vertical top rods 18, the tops of the vertical top rods 18 are connected to the molding cavity 4. When the top plate moves upward, the vertical top rods can also apply a vertical upward thrust to each position of the product.

[0033] Specifically, the multi-directional inclined roof structure 13 includes a plurality of inclined roof blocks 19 arranged on the lower template 2, and the inclined roof blocks 19 are rotatably connected to the top plate 5 through inclined roof rods 20. When the top plate moves upward, the inclined roof blocks can be driven to move obliquely upward through the inclined roof rods, thereby exerting an oblique upward thrust on the product.

[0034] Specifically, a plurality of support blocks 21 are further provided on the bottom plate 3, and the top plate 5 is supported on the support blocks 21. The support blocks can support the top plate so as to form a space for installing the injection liquid diverter plate on the lower side of the top plate.

[0035] The working principle of the utility model is that the injection liquid diverter plate in the injection module can inject the injection liquid into the molding cavity from the bottom of the molding cavity through a plurality of injection tubes after diverting the injection liquid, so that the glue port is formed on the back of the tailgate inner plate, thereby reducing the influence of the glue port on the quality of the outer surface of the product, and the protective structure can protect the contact part between the injection tube and the top plate to prevent the injection tube from being damaged when the top plate moves;

[0036] By arranging a protective sleeve on the injection molding tube, it is possible to prevent the top plate from bumping into the injection molding tube during movement, thereby causing damage to the injection molding tube;

[0037] The combined ejection mechanism composed of the outer straight ejection structure 11, the middle straight ejection structure 12 and the multi-directional inclined ejection structure 13 can apply uniform thrust to each position of the product when the product is ejected, so as to prevent the product from being damaged during ejection. When the ejection plate moves upward, the outer straight ejection rod can drive the outer straight ejection block to apply vertical upward thrust to the outer edge of the product. When the ejection plate moves upward, the middle straight ejection rod can drive the middle straight ejection block to apply vertical upward thrust to the front side of the product. When the ejection plate moves upward, the vertical ejection rod can also apply vertical upward thrust to each position of the product. When the ejection plate moves upward, the inclined ejection rod can drive the inclined ejection block to move obliquely upward, thereby applying oblique upward thrust to the product.

[0038] The support block can support the top plate so as to form a space for installing the injection liquid diverter plate on the lower side of the top plate.

[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 in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0040] Although this article uses the upper template 1, lower template 2, bottom plate 3, molding cavity 4, top plate 5, glue feeding module 6, injection liquid diverter plate 7, injection tube 8, protective structure 9, protective sleeve 10, peripheral straight top structure 11, middle straight top structure 12, multi-directional inclined top structure 13, peripheral straight top block 14, peripheral straight top rod 15, middle straight top block 16, middle straight top rod 17, vertical top rod 18, inclined top block 19, inclined top rod 20, support block 21, etc. more frequently, these terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. An injection mold for a large-area rear tailgate inner panel of an automobile based on a multi-point back-casting technology, comprising an upper mold plate (1), a lower mold plate (2) and a bottom plate (3) arranged in sequence from top to bottom, characterized in that: A molding cavity (4) is arranged between the upper mold plate (1) and the lower mold plate (2), a top plate (5) and a glue feeding module (6) are arranged between the bottom plate (3) and the lower mold plate (2), the glue feeding module (6) comprising an injection liquid diverter plate (7) arranged at the lower side of the top plate (5), the injection liquid diverter plate (7) is connected to a plurality of injection molding tubes (8) vertically penetrating the top plate (5) and the lower mold plate (2) and connected to the bottom of the molding cavity (4), and a protective structure (9) is arranged on the injection molding tubes (8).

2. The large-area rear tailgate inner panel injection mold for automobiles based on multi-point reverse pouring technology according to claim 1, characterized in that: The protective structure (9) comprises a protective sleeve (10) sleeved on the injection molding tube (8), and the protective sleeve (10) is slidably matched with the top plate (5).

3. The large-area automobile tailgate inner panel injection mold based on multi-point back-casting technology according to claim 2 is characterized in that: The protective sleeve (10) is arranged in the middle section of the injection molding tube (8).

4. The large-area rear tailgate inner panel injection mold for automobiles based on multi-point reverse pouring technology according to claim 3, characterized in that: The top plate (5) is provided with a combined ejection mechanism connected to the bottom of the molding cavity (4).

5. The large-area rear tailgate inner panel injection mold for automobiles based on multi-point reverse pouring technology according to claim 4, characterized in that: The combined ejection mechanism comprises a peripheral straight top structure (11), an intermediate straight top structure (12) and a multi-directional inclined top structure (13).

6. The large-area automobile tailgate inner panel injection mold based on multi-point reverse pouring technology according to claim 5 is characterized in that: The peripheral straight top structure (11) comprises a plurality of peripheral straight top blocks (14) arranged in a rectangular ring shape, and the peripheral straight top blocks (14) are connected to the top plate (5) via peripheral straight top rods (15).

7. The large-area rear tailgate inner panel injection mold for automobiles based on multi-point reverse pouring technology according to claim 6, characterized in that: The intermediate straight top structure (12) comprises an intermediate straight top block (16) which is arranged on the front side of the lower template (2) and is arranged in a straight line. The intermediate straight top block (16) is connected to the top plate (5) via an intermediate straight top rod (17).

8. The large-area rear tailgate inner panel injection mold for automobiles based on multi-point reverse pouring technology according to claim 7, characterized in that: The intermediate straight top structure (12) further comprises a plurality of vertical top rods (18), the tops of the vertical top rods (18) being connected to the molding cavity (4).

9. The large-area automobile tailgate inner panel injection mold based on multi-point reverse pouring technology according to claim 8, characterized in that: The multi-directional inclined roof structure (13) comprises a plurality of inclined roof blocks (19) arranged on the lower template (2), and the inclined roof blocks (19) are rotatably connected to the roof plate (5) via inclined roof rods (20).

10. The large-area automobile tailgate inner panel injection mold based on multi-point back-casting technology according to claim 1, characterized in that: A plurality of supporting blocks (21) are also provided on the bottom plate (3), and the top plate (5) is supported on the supporting blocks (21).

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