A special injection mold for an automobile door pillar interior panel

Abstract

The utility model relates to injection mold technical field especially discloses a kind of injection mold special for automobile door column interior trim panel, including injection mold body, and injection mold body includes front mould and rear mould, rear mould is located on the side wall of front mould, and stepless top die structure is symmetrically screwed on the side wall of front mould, and stepless top die structure includes support, fixed cover is fixedly installed between support, motor is equipped on the side wall of fixed cover, by setting stepless top die structure, so that staff can start motor, so that the output shaft of motor drives screw rod rotation and occurs thread transmission with internal thread groove, so that transmission column drives slider to slide in sliding slot inside, simultaneously, the movement of transmission column will drive the ejector pin group on fixed plate to eject interior trim panel body from front mould, to further make stepless top die structure can adjust the ejector pin group top die amplitude according to different interior trim panel shape, size and production process requirement, greatly shorten the die changing and debugging time, improve convenience.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a special injection mold for automotive door pillar interior panels. Background Technology

[0002] The special injection mold for automotive door pillar interior panels is a mold used to produce automotive door pillar interior panels. First, plastic granules or powder are heated to a molten state in an injection molding machine. Then, under high pressure, they are injected into a precisely designed mold cavity through the nozzle of the injection molding machine. The plastic cools and solidifies in the mold to form the final product shape. Finally, the mold is opened, and the finished product is taken out through the top mold mechanism.

[0003] A search of Chinese patent publication number "CN218488991 U" reveals an "injection mold" in which, after the injection mold opens but before the product is ejected, the limiting part and the first limiting member separate. The movement of the ejector plate causes the ejector sleeve to be ejected synchronously. During this process, the sprue undergoes elastic deformation until the limiting part and the first limiting member abut against each other in the ejection direction. The inner pin is limited by the first limiting member and cannot continue to move in the ejection direction. The continued movement of the ejector plate causes the outer pin of the ejector sleeve to be ejected synchronously. After the product is removed, the sprue returns to its elastic deformation at the moment the mold core is removed. Then, the ejector plate continues to move and causes the outer pin to be ejected synchronously. The outer pin pushes the sprue in the ejection direction, causing the sprue and the inner pin to separate, thus achieving a smooth drop of the sprue.

[0004] Based on the above search and existing technology, it was found that the above patent has certain defects. When using the injection mold, the extension length of its ejector pin is difficult to adjust further. Due to the different demolding difficulties and vulnerable parts of interior panels with different parameters, the interior panels may experience slight displacement or deformation during the demolding process. This cannot meet the size and shape accuracy requirements of high-precision interior panels, reducing the overall quality and adaptability of the product, and its practicality is insufficient and needs to be improved. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a special injection mold for automotive door pillar interior panels, solving the technical problem of insufficient practicality of existing injection molds.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A special injection mold for automotive door pillar interior panels includes an injection mold body, wherein the injection mold body includes a front mold and a rear mold, and the rear mold is located on the side wall of the front mold.

[0010] The front mold sidewall is symmetrically threaded with a stepless top mold structure;

[0011] The stepless top mold structure includes a bracket, a fixed cover is fixedly installed between the brackets, a motor is provided on the side wall of the fixed cover, a lead screw is fixedly installed on the output shaft of the motor, a sliding groove is opened inside each of the two brackets, a slider is slidably installed inside each of the two sliding grooves, a transmission column is fixedly installed between the two sliders, and the transmission column is slidably installed with the front mold.

[0012] Preferably, the transmission column has an internal threaded groove, which is threaded to the lead screw. The inner walls of the two sliding grooves are symmetrically provided with limit grooves. Each limit groove has a limit block slidably installed inside it, and each limit block is fixedly installed with the slider.

[0013] Preferably, the front mold sidewall is provided with a fixing plate, the fixing plate sidewall is provided with a plurality of ejector pin assemblies, the interior panel body is provided between the front mold and the rear mold, and the ejector pin assembly on the rear mold can eject the interior panel body.

[0014] (III) Beneficial Effects

[0015] Firstly, by setting up a stepless top mold structure, the operator can turn on the motor, causing the motor's output shaft to drive the lead screw to rotate and generate thread transmission with the internal thread groove. This causes the transmission column to drive the slider to slide inside the groove. At the same time, the movement of the transmission column will drive the ejector pin assembly on the fixed plate to push the interior panel body off the front mold. Thus, the stepless top mold structure can adjust the top mold amplitude of the ejector pin assembly according to different interior panel shapes, sizes and production process requirements, without the need for frequent replacement of top mold units or complex mechanical adjustments, greatly shortening mold change and debugging time and improving convenience.

[0016] Secondly, by setting limit grooves and limit blocks, when the stepless top mold structure drives the fixed plate and the ejector pin assembly on the fixed plate to move, the transmission column drives the slider and limit block to slide inside the slide groove and limit groove respectively, thereby providing additional limits and increasing stability. Attached Figure Description

[0017] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional exploded view of the structure of this utility model.

[0020] Figure 3 This is an exploded view of the front mold connection of this utility model;

[0021] Figure 4 The stepless top mold structure of this utility model is connected by an explosion.

[0022] Legend: 11. Injection mold body; 12. Front mold; 13. Rear mold; 14. Bracket; 15. Fixed cover; 16. Motor; 17. Lead screw; 18. Slide groove; 19. Slider; 21. Transmission column; 22. Internal thread groove; 23. Limit groove; 24. Limit block; 25. Fixed plate; 26. Ejector pin assembly; 27. Interior panel body. Detailed Implementation

[0023] This application provides a dedicated injection mold for automotive door pillar interior panels, effectively solving the technical problem of insufficient practicality of existing injection molds. By setting a stepless top mold structure, the operator can start the motor, causing the motor's output shaft to drive the lead screw to rotate and generate threaded transmission with the internal thread groove. This causes the transmission column to drive the slider to slide inside the groove. Simultaneously, the movement of the transmission column will drive the ejector pin assembly on the fixed plate to push the interior panel body off the front mold. Thus, the stepless top mold structure can adjust the top mold amplitude of the ejector pin assembly according to different interior panel shapes, sizes, and production process requirements, eliminating the need for frequent replacement of top mold units or complex mechanical adjustments. This greatly shortens mold change and debugging time and improves convenience. Furthermore, by setting limit grooves and limit blocks, when the stepless top mold structure drives the fixed plate and the ejector pin assembly on the fixed plate to move, the transmission column drives the slider and limit block to slide inside the groove and limit groove respectively, thereby providing additional limits and increasing stability.

[0024] Example

[0025] like Figure 1 - Figure 4 As shown, the technical solution in this application embodiment effectively solves the technical problem of insufficient practicality of existing injection molds. The overall idea is as follows:

[0026] To address the problems existing in the prior art, this utility model provides a special injection mold for automotive door pillar interior panels, including an injection mold body 11, which includes a front mold 12 and a rear mold 13, with the rear mold 13 located on the side wall of the front mold 12.

[0027] A stepless top mold structure is symmetrically threaded on the side wall of the front mold 12;

[0028] The stepless top mold structure includes a bracket 14, a fixed cover 15 is fixedly installed between the brackets 14, a motor 16 is provided on the side wall of the fixed cover 15, a lead screw 17 is fixedly installed on the output shaft of the motor 16, a sliding groove 18 is opened inside each of the two brackets 14, a slider 19 is slidably installed inside each of the two sliding grooves 18, a transmission column 21 is fixedly installed between the two sliders 19, and the transmission column 21 is slidably installed with the front mold 12;

[0029] By setting up a stepless top mold structure, the operator can turn on the motor 16, causing the output shaft of the motor 16 to drive the lead screw 17 to rotate and generate thread transmission with the internal thread groove 22. This causes the transmission column 21 to drive the slider 19 to slide inside the slide groove 18. At the same time, the movement of the transmission column 21 will drive the ejector pin assembly 26 on the fixed plate 25 to push the interior panel body 27 off the front mold 12. Thus, the stepless top mold structure can adjust the top mold amplitude of the ejector pin assembly 26 according to different interior panel shapes, sizes and production process requirements, without the need for frequent replacement of top mold units or complex mechanical adjustments, greatly shortening mold change and debugging time and improving convenience.

[0030] By optimizing the layout and settings of the structure, the stepless top mold structure is integrated on the bracket 14, making it an integrated unit and greatly improving the ease of installation of the stepless top mold structure.

[0031] The transmission column 21 has an internal threaded groove 22 inside, which is threaded to the lead screw 17. The inner walls of the two sliding grooves 18 are symmetrically provided with limit grooves 23. Each limit groove 23 has a limit block 24 slidably installed inside, and each limit block 24 is fixedly installed with the slider 19.

[0032] By setting the limiting groove 23 and the limiting block 24, when the stepless top mold structure drives the fixed plate 25 and the ejector pin group 26 on the fixed plate 25 to move, the transmission column 21 drives the slider 19 and the limiting block 24 to slide inside the slide groove 18 and the limiting groove 23 respectively, thereby providing additional limiting and increasing stability.

[0033] A fixing plate 25 is provided on the side wall of the front mold 12, and multiple ejector pin groups 26 are provided on the side wall of the fixing plate 25. An interior panel body 27 is provided between the front mold 12 and the rear mold 13. The ejector pin groups 26 on the rear mold 13 can eject the interior panel body 27.

[0034] Working principle:

[0035] First, the staff first precisely closes the front mold 12 and the rear mold 13 through the guide system to form a closed cavity. Then, the injection molding machine can inject molten plastic into the cavity through the gating system at a pressure of 80-120MPa, so that the interior panel body 27 is formed between the front mold 12 and the rear mold 13. After cooling, the shrinkage effect of the plastic causes the interior panel body 27 to adhere to the surface of the cavity of the front mold 12.

[0036] In the second step, the operator can reset the rear mold 13. At this time, the interior panel body 27 will be attached to the front mold 12. Then, the motor 16 can be turned on, so that the output shaft of the motor 16 drives the lead screw 17 to rotate and generate thread transmission with the internal thread groove 22. This causes the transmission column 21 to drive the slider 19 and the limiting block 24 to slide in the sliding groove 18 and the limiting groove 23 respectively. At the same time, the movement of the transmission column 21 will drive the ejector pin group 26 on the fixed plate 25 to push the interior panel body 27 off the front mold 12. After the ejection is completed, the motor 16 reverses to drive the lead screw 17 to reset.

[0037] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A special injection mold for automotive door pillar interior panels, comprising an injection mold body (11), wherein the injection mold body (11) includes a front mold (12) and a rear mold (13), wherein the rear mold (13) is located on the side wall of the front mold (12), characterized in that... ； The front mold (12) has a stepless top mold structure installed symmetrically on its side wall; The stepless top mold structure includes a bracket (14), a fixed cover (15) is fixedly installed between the brackets (14), a motor (16) is provided on the side wall of the fixed cover (15), a lead screw (17) is fixedly installed on the output shaft of the motor (16), and a sliding groove (18) is opened inside both brackets (14). Each of the two grooves (18) has a slider (19) slidably installed inside, and a transmission column (21) is fixedly installed between the two sliders (19).

2. The special injection mold for automotive door pillar interior panels as described in claim 1, characterized in that, The transmission column (21) is slidably mounted to the front mold (12); The transmission column (21) has an internal threaded groove (22) inside.

3. The special injection mold for automotive door pillar interior panels as described in claim 2, characterized in that, The internal threaded groove (22) is threadedly installed with the lead screw (17); Among them, the inner walls of the two grooves (18) are symmetrically provided with limiting grooves (23).

4. The special injection mold for automotive door pillar interior panels as described in claim 3, characterized in that, Each of the limiting grooves (23) is slidably installed with a limiting block (24); Each of the limiting blocks (24) is fixedly installed with the slider (19).

5. The special injection mold for automotive door pillar interior panels as described in claim 4, characterized in that, The front mold (12) has a fixing plate (25) on its side wall; The fixing plate (25) has multiple ejector pin groups (26) on its side wall.

6. The special injection mold for automotive door pillar interior panels as described in claim 5, characterized in that, An interior panel body (27) is provided between the front mold (12) and the rear mold (13); The ejector pin assembly (26) on the rear mold (13) can eject the interior panel body (27).

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