High-speed secondary ejection demolding injection mold for lower body plastic part of automobile front bumper

Abstract

The utility model provides a high-speed secondary ejection demolding injection mold for a lower body plastic part of an automobile front bumper, and belongs to the technical field of molds. The mold comprises a lower mold plate, the lower mold plate is provided with a forming cavity used for forming a lower body plastic part of the automobile front bumper in an injection molding mode, two auxiliary ejection mechanisms are arranged on the front side of the forming cavity, the auxiliary ejection mechanisms are connected with an ejection plate on the lower side of the lower mold plate, each auxiliary ejection mechanism comprises an ejection block and an ejection rod, the bottom of the ejector rod is connected with the ejector plate through a height adjusting assembly. The auxiliary ejection mechanism can apply thrust to the outer edge position of the front side of the product before the whole product is ejected out, so that the outer edge of the product can be separated from the lower mold plate firstly, the outer edge position is prevented from being damaged when the product is ejected out, and the height adjusting assembly can adjust the height of the ejection block when the ejection rod and the ejection block are installed. And the installation of the ejector block and the ejector rod can be smoothly completed when the size of the ejector rod is deviated.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to a high-speed secondary ejection and demolding injection mold for the lower body plastic part of an automobile front bumper. Background Technology

[0002] The lower body plastic part of the front bumper of a car is generally injection molded. The ejection of the lower body plastic part of the front bumper of a car is divided into two steps. First, the outer edge of the front side of the product is pushed by the auxiliary ejection mechanism to separate the outer edge from the lower mold plate. Then, the product is fixed out as a whole by the ejection mechanism. However, in the existing technology, the height of the ejector rod cannot be temporarily adjusted during the installation of the auxiliary ejection mechanism. When there is an error in the manufacturing of the ejector rod, the auxiliary ejection mechanism will not be able to adapt to the mold.

[0003] For example, a Chinese patent discloses a secondary ejection mechanism for an assembly hole in an automobile bumper [application number: 201020553814.5], which includes an upper mold plate and a lower mold plate. The upper mold plate is connected to a cavity plate, and a mold foot is installed on the lower mold plate. A top plate is set inside the mold foot, and a straight ejector rod is connected to the top plate. A core plate is installed on the mold foot, and a core insert is installed on the core plate. A formed automobile bumper is formed between the core insert, the core plate, and the cavity plate. An assembly hole is formed in the bumper. A straight ejector block is connected to the straight ejector rod, and an assembly hole core is installed on the straight ejector block. The assembly hole core cooperates with the assembly hole of the bumper. The feature is that a limiting screw is installed in the straight ejector block, and a spring block is movably connected to the limiting screw. A compression spring is installed between the spring block and the straight ejector block. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by providing a high-speed secondary ejection and demolding injection mold for the lower body plastic part of an automobile front bumper.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-speed secondary ejection and demolding injection mold for a lower body plastic part of a car front bumper includes a lower template. The lower template is provided with a molding cavity for injection molding to form the lower body plastic part of the car front bumper. Two auxiliary ejection mechanisms are provided on the front side of the molding cavity. The auxiliary ejection mechanisms are connected to the ejection plate on the lower side of the lower template. The auxiliary ejection mechanism includes an ejector block and an ejector rod. The bottom of the ejector rod is connected to the ejection plate through a height adjustment component.

[0007] In the aforementioned high-speed secondary ejection and demolding injection mold for the lower body plastic part of the car front bumper, the height adjustment component includes an ejector rod connection structure and an ejector plate connection structure, wherein the ejector plate connection structure and the ejector rod connection structure are rotatably connected.

[0008] In the aforementioned high-speed secondary ejection and demolding injection mold for the lower body plastic part of the car front bumper, the ejector rod connection structure includes an upper sliding sleeve and an inner adjusting column. The top of the inner adjusting column is inserted into the bottom of the upper sliding sleeve and screwed to the upper sliding sleeve. The bottom of the ejector rod passes through the end cap at the top of the upper sliding sleeve and is connected to the inner adjusting column.

[0009] In the aforementioned high-speed secondary ejection and demolding injection mold for the lower body plastic part of the car front bumper, the ejector plate connecting structure includes a connecting seat fixed to the bottom of the ejector plate. The connecting seat has a groove on the side near the ejector rod. A rotating shaft is horizontally arranged at the bottom of the groove. A rotating plate that can rotate around the rotating shaft is also provided in the groove. The rotating plate is connected to the middle part of the inner adjusting column.

[0010] In the aforementioned high-speed secondary ejection and demolding injection mold for the lower body plastic part of the car front bumper, two inwardly recessed slots are symmetrically arranged on both sides of the middle part of the inner adjusting column, and two connecting blocks that are inserted into the slots are protruding from the side of the rotating plate near the ejector rod.

[0011] In the aforementioned high-speed secondary ejection and demolding injection mold for the lower body plastic part of the car front bumper, the bottom of the inner adjusting column is provided with a fastening screw that is fixedly connected to the bottom end of the ejector rod.

[0012] In the aforementioned high-speed secondary ejection and demolding injection mold for the lower body plastic part of the car front bumper, the diameter of the end cap is larger than the diameter of the upper sliding sleeve. The upper sliding sleeve is inserted into the ejector plate and slidably connected to the ejector plate. The bottom of the end cap abuts against the ejector plate, and the part of the end cap protruding from the upper sliding sleeve is fixedly connected to the ejector plate by several bolts.

[0013] In the aforementioned high-speed secondary ejection and demolding injection mold for the lower body plastic part of the car front bumper, the diameter of the lower section of the ejector rod is smaller than the diameter of the upper section of the ejector rod.

[0014] In the aforementioned high-speed secondary ejection and demolding injection mold for the lower body plastic part of the car front bumper, the ejector block and ejector rod are connected by a detachable connection structure.

[0015] In the aforementioned high-speed secondary ejection and demolding injection mold for the lower body plastic part of the car front bumper, the detachable connection structure includes a snap-fit ​​groove recessed inward on the side of the push rod, and a fixing block mounting groove is provided on the side of the push block near the snap-fit ​​groove. A snap-fit ​​block with its inner end inserted into the snap-fit ​​groove is detachably fixed in the fixing block mounting groove by several bolts.

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

[0017] 1. The auxiliary ejection mechanism can apply a thrust to the outer edge of the front side of the product before the entire product is ejected, so that the outer edge of the product can be separated from the lower template first, to prevent the outer edge from being damaged during product ejection. The height adjustment component can adjust the height of the top block during the installation of the top rod and the top block, so that the installation of the top block and the top rod can still be completed smoothly even if there is a deviation in the size of the top rod.

[0018] 2. The top rod connecting structure is connected to the top rod, and the ejector plate connecting structure is connected to the ejector plate. The top rod connecting structure and the ejector plate connecting structure are rotatably connected, which can adjust the height of the top rod.

[0019] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0020] Figure 1 This is a structural diagram of the lower template;

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

[0022] Figure 3 This is a sectional view of the lower template;

[0023] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0024] Figure 5 This is a schematic diagram of the auxiliary ejection mechanism;

[0025] Figure 6 This is a partial structural diagram of the auxiliary ejection mechanism.

[0026] In the figure, the components are: lower template 1, forming cavity 2, auxiliary ejection mechanism 3, ejection plate 4, ejector block 5, ejector rod 6, height adjustment assembly 7, ejector rod connection structure 8, ejection plate connection structure 9, upper sliding sleeve 10, inner adjusting column 11, end cover 12, connecting seat 13, groove 14, rotating shaft 15, rotating plate 16, slot 17, connecting block 18, fastening screw 19, snap-fit ​​groove 20, fixing block mounting groove 21, and snap-fit ​​block 22. Detailed Implementation

[0027] like Figures 1-6As shown, a high-speed secondary ejection and demolding injection mold for a lower body plastic part of a car front bumper includes a lower template 1. The lower template 1 is provided with a molding cavity 2 for injection molding to form the lower body plastic part of the car front bumper. Two auxiliary ejection mechanisms 3 are provided on the front side of the molding cavity 2. The auxiliary ejection mechanisms 3 are connected to the ejection plate 4 on the lower side of the lower template 1. The auxiliary ejection mechanism 3 includes an ejector block 5 and an ejector rod 6. The bottom of the ejector rod 6 is connected to the ejection plate 4 through a height adjustment component 7.

[0028] In this utility model, the auxiliary ejection mechanism 3 can apply a pushing force to the outer edge of the front side of the product before the product is ejected as a whole, so that the outer edge of the product can be separated from the lower template first, in order to prevent the outer edge from being damaged when the product is ejected. The height adjustment component can adjust the height of the top block when the top rod and top block are installed, so that the installation of the top block and top rod can still be completed smoothly even when the top rod is too short.

[0029] Specifically, the height adjustment assembly 7 includes a top rod connecting structure 8 and a top plate connecting structure 9, which are rotatably connected. The top rod connecting structure 8 is connected to the top rod, and the top plate connecting structure 9 is connected to the top plate. The rotatable connection between the top rod connecting structure 8 and the top plate connecting structure 9 allows for adjustment of the height of the top rod.

[0030] Specifically, the push rod connection structure 8 includes an upper sliding sleeve 10 and an inner adjusting column 11. The top end of the inner adjusting column 11 is inserted into the bottom of the upper sliding sleeve 10 and screwed to it. The bottom of the push rod 6 passes through the end cap 12 at the top of the upper sliding sleeve 10 and is connected to the inner adjusting column 11. Rotating the upper sliding sleeve 10 can screw the inner adjusting column 11 into or out of the upper sliding sleeve. Screwing the inner adjusting column into or out of the upper sliding sleeve can increase or decrease the height of the push rod relative to the upper sliding sleeve. When the height of the upper sliding sleeve remains constant, increasing or decreasing the height of the push rod relative to the upper sliding sleeve can achieve the adjustment of the push rod height.

[0031] Specifically, the ejector plate connecting structure 9 includes a connecting seat 13 fixed to the bottom of the ejector plate 4. The connecting seat 13 has a groove 14 near the ejector rod 6. A rotating shaft 15 is horizontally positioned at the bottom of the groove 14. A rotating plate 16, capable of rotating around the rotating shaft 15, is also located within the groove 14. The rotating plate 16 is connected to the middle of the inner adjusting column 11. Rotating the rotating plate allows the inner adjusting rod to move up or down, thereby adjusting the height of the ejector rod. After the inner adjusting rod has moved, the upper sliding sleeve is rotated until the bottom of the end cover abuts against the ejector plate. Then, the end cover and ejector plate are fixed with bolts, thus locking and positioning the ejector rod after adjustment.

[0032] Specifically, the inner adjusting column 11 has two inwardly recessed slots 17 symmetrically arranged on both sides of its middle section. The rotating plate 16 has two connecting blocks 18 protruding from the side near the top rod 6, which are inserted into the slots 17. The two connecting blocks on the rotating plate can be inserted into the slots to connect the rotating plate and the inner adjusting column, and the installation is convenient.

[0033] Specifically, the bottom of the inner adjusting column 11 is provided with a fastening screw 19 that is fixed to the bottom end of the top rod 6.

[0034] Specifically, the diameter of the end cap 12 is larger than the diameter of the upper sliding sleeve 10. The upper sliding sleeve 10 is inserted into the ejector plate 4 and slidably connected to the ejector plate 4. The bottom of the end cap 12 abuts against the ejector plate 4, and the part of the end cap 12 protruding from the upper sliding sleeve 10 is fixed to the ejector plate 4 by several bolts, which can realize the fixing of the top rod and the inner adjusting column.

[0035] Specifically, the diameter of the lower section of push rod 6 is smaller than the diameter of the upper section of push rod 6.

[0036] Preferably, the top block 5 and the top rod 6 are connected by a detachable connection structure. This detachable connection structure includes a recessed locking groove 20 on the side of the top rod 6. A fixing block mounting groove 21 is provided on the side of the top block 5 near the locking groove 20. A locking block 22, whose inner end is inserted into the locking groove 20, is detachably fixed within the fixing block mounting groove 21 by several bolts. The detachable connection between the top block and the top rod can be achieved through the cooperation of the locking block and the locking groove, facilitating disassembly.

[0037] The working principle of this utility model is as follows: before the product is ejected as a whole, the auxiliary ejection mechanism 3 can apply a pushing force to the outer edge of the front side of the product so that the outer edge of the product can be separated from the lower template first, so as to prevent the outer edge from being damaged when the product is ejected. The height adjustment component can adjust the height of the top block when the top rod and top block are installed, so that the installation of the top block and top rod can still be completed smoothly even when the top rod size is too short.

[0038] The push rod connecting structure 8 is connected to the push rod, and the ejector plate connecting structure 9 is connected to the ejector plate. The push rod connecting structure 8 and the ejector plate connecting structure 9 are rotatably connected, which can adjust the height of the push rod.

[0039] Rotating the upper sliding sleeve 10 can screw the inner adjusting column 11 into or out of the upper sliding sleeve. Screwing the inner adjusting column into or out of the upper sliding sleeve can increase or decrease the height of the push rod relative to the upper sliding sleeve. When the height of the upper sliding sleeve remains constant, increasing or decreasing the height of the push rod relative to the upper sliding sleeve can adjust the height of the push rod.

[0040] Rotating the rotating plate allows the inner adjusting rod to move up or down, thus adjusting the height of the top rod. After the inner adjusting rod has moved, rotate the upper sliding sleeve until the bottom of the end cover abuts against the ejector plate. Then, fix the end cover and ejector plate with bolts to lock and position the top rod after adjustment. The two connecting blocks on the rotating plate can be inserted into the slots to connect the rotating plate and the inner adjusting column, and the installation is convenient.

[0041] The combination of the locking block and the locking slot allows for a detachable connection between the top block and the top rod, facilitating easy disassembly.

[0042] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0043] Although this article frequently uses terms such as lower template 1, forming cavity 2, auxiliary ejection mechanism 3, ejection plate 4, ejector block 5, ejector rod 6, height adjustment assembly 7, ejector rod connection structure 8, ejection plate connection structure 9, upper sliding sleeve 10, inner adjusting column 11, end cap 12, connecting seat 13, groove 14, rotating shaft 15, rotating plate 16, slot 17, connecting block 18, fastening screw 19, snap-fit ​​groove 20, fixing block mounting groove 21, and snap-fit ​​block 22, these terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would contradict the spirit of this utility model.

Claims

1. A high-speed secondary ejection and demolding injection mold for a lower body plastic part of a car front bumper, comprising a lower template (1), characterized in that, The lower template (1) is provided with a molding cavity (2) for injection molding to form the lower body plastic part of the front bumper of an automobile. The molding cavity (2) is provided with two auxiliary ejection mechanisms (3) on the front side. The auxiliary ejection mechanisms (3) are connected to the ejection plate (4) on the lower side of the lower template (1). The auxiliary ejection mechanism (3) includes an ejector block (5) and an ejector rod (6). The bottom of the ejector rod (6) is connected to the ejector plate (4) through a height adjustment component (7).

2. The high-speed secondary ejection and demolding injection mold for the lower body plastic part of the automobile front bumper according to claim 1, characterized in that, The height adjustment assembly (7) includes a top rod connection structure (8) and a top plate connection structure (9), which are rotatably connected.

3. The high-speed secondary ejection and demolding injection mold for the lower body plastic part of the automobile front bumper according to claim 2, characterized in that, The top rod connection structure (8) includes an upper sliding sleeve (10) and an inner adjusting column (11). The top end of the inner adjusting column (11) is inserted into the bottom of the upper sliding sleeve (10) and screwed to the upper sliding sleeve (10). The bottom of the top rod (6) passes through the end cap (12) at the top of the upper sliding sleeve (10) and is connected to the inner adjusting column (11).

4. The high-speed secondary ejection and demolding injection mold for the lower body plastic part of the automobile front bumper according to claim 3, characterized in that, The ejector plate connection structure (9) includes a connecting seat (13) fixed at the bottom of the ejector plate (4). The connecting seat (13) has a groove (14) on the side near the top rod (6). A rotating shaft (15) is horizontally arranged at the bottom of the groove (14). A rotating plate (16) that can rotate around the rotating shaft (15) is also provided in the groove (14). The rotating plate (16) is connected to the middle of the inner adjusting column (11).

5. The high-speed secondary ejection and demolding injection mold for the lower body plastic part of the automobile front bumper according to claim 4, characterized in that, The inner adjusting column (11) has two inwardly recessed slots (17) symmetrically arranged on both sides of the middle part, and the rotating plate (16) has two connecting blocks (18) protruding from the side near the top rod (6) and inserted into the slots (17).

6. The high-speed secondary ejection and demolding injection mold for the lower body plastic part of the automobile front bumper according to claim 3, characterized in that, The bottom of the inner adjusting column (11) is provided with a fastening screw (19) that is fixed to the bottom end of the top rod (6).

7. The high-speed secondary ejection and demolding injection mold for the lower body plastic part of the automobile front bumper according to claim 3, characterized in that, The diameter of the end cap (12) is larger than the diameter of the upper sliding sleeve (10). The upper sliding sleeve (10) is inserted into the ejector plate (4) and slidably connected to the ejector plate (4). The bottom of the end cap (12) abuts against the ejector plate (4), and the part of the end cap (12) protruding from the upper sliding sleeve (10) is fixedly connected to the ejector plate (4) by several bolts.

8. The high-speed secondary ejection and demolding injection mold for the lower body plastic part of the automobile front bumper according to claim 1, characterized in that, The diameter of the lower section of the top rod (6) is smaller than the diameter of the upper section of the top rod (6).

9. The high-speed secondary ejection and demolding injection mold for the lower body plastic part of the automobile front bumper according to claim 1, characterized in that, The top block (5) and the top rod (6) are connected by a detachable connection structure.

10. The high-speed secondary ejection and demolding injection mold for the lower body plastic part of the automobile front bumper according to claim 9, characterized in that, The detachable connection structure includes a snap-fit ​​groove (20) recessed inward on the side of the top rod (6), and a fixing block mounting groove (21) is provided on the side of the top block (5) near the snap-fit ​​groove (20). A snap-fit ​​block (22) with its inner end inserted into the snap-fit ​​groove (20) is detachably fixed in the fixing block mounting groove (21) by a number of bolts.

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