A mold for a steering wheel fitting

Abstract

The utility model relates to the technical field of plastic mould, disclose a mould of steering wheel accessory, including front half mould group and rear half mould group, be equipped with front mould line position mechanism on the front half mould group, and this mechanism includes line position seat, integrally formed U -shaped block, the T -shaped block fixed on line position seat and the shovel of fixed in rear half mould group. U -shaped block is fixed on the front mould plate, its inner wall is used for the side surface and the bottom surface of line position seat to carry out sliding direction and support, T -shaped block and the T -shaped guide groove sliding fit that set up on U -shaped block, shovel and the inclined plane sliding fit on line position seat, are used for driving line position seat movement when opening mould. The utility model will traditional separate line position pressure plate and bottom wear -resisting plate be integrated into the U -shaped block, aim at solving the problem of complex structure, processing assembly complicated and high cost in prior art because of many parts, reached the beneficial effect that simplifies mould structure, reduces the number of spare parts, reduces production cost and significantly improves line position movement stability.

Description

Technical Field

[0001] This utility model relates to the field of plastic mold technology, and in particular to a mold for a steering wheel accessory. Background Technology

[0002] In the manufacturing of automotive parts, injection molding is a widely used core process, especially in the production of interior and exterior trim parts such as steering wheel components. To meet functional and aesthetic design requirements, these plastic parts often have complex structures, frequently resulting in undercut structures in specific locations that cannot be directly demolded in the conventional mold opening direction.

[0003] To address the issue of undercut demolding on the front mold side, existing technologies typically employ a front mold sliding mechanism. In a conventional structural design, to ensure the sliding mechanism's movement stability during mold opening and closing and its long-term wear resistance, multiple independent auxiliary parts are required around the sliding mechanism. Specifically, two sliding pressure plates are usually installed on each side of the sliding mechanism for lateral sliding guidance and clamping, while an independent wear-resistant plate is installed at its bottom to withstand the frictional forces during sliding.

[0004] However, this traditional guide structure, composed of multiple independent parts such as sliding plates and wear-resistant plates, has inherent shortcomings in practical production applications. Each independent part requires a series of independent manufacturing processes, including material preparation, machining, heat treatment, and final fitment by fitter. This multi-part assembly method not only increases the overall number of parts in the mold but also inevitably prolongs the mold's manufacturing cycle and increases material and labor costs. Furthermore, the assembly of multiple parts generates cumulative tolerances, placing higher demands on the final fitting accuracy of the sliding mechanism.

[0005] Therefore, this utility model proposes a mold for steering wheel accessories to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a mold for steering wheel accessories. In view of the problems in the prior art, the front mold sliding mechanism of the steering wheel accessory mold has a relatively complex structure, cumbersome processing and assembly process, and high manufacturing cost due to the use of separate parts. This utility model aims to provide a mold for steering wheel accessories with an improved structure that can effectively solve the above problems.

[0007] To achieve the above objectives, this utility model provides a mold for a steering wheel accessory, comprising: a front half module and a rear half module. The front half module includes a panel, a front template, and a front mold core fixedly connected to the front template. The rear half module includes a rear template and a rear mold core fixedly connected to the rear template. The front half module also includes a front mold sliding mechanism slidably disposed on the front template, the front mold sliding mechanism including a sliding seat; and a U-shaped block, a T-shaped block, and a shovel fixedly connected to the rear half module.

[0008] The U-shaped block is a one-piece molded part, which is fixedly connected to the front template by screws and clips.

[0009] Furthermore, the slide seat is slidably fitted within the U-shaped block, and the two parallel sidewalls of the U-shaped block and the bottom wall connected to the two sidewalls are used to guide and support the two sides and bottom of the slide seat, respectively; the T-shaped block is fixedly connected to the slide seat and slidably fitted with the T-shaped guide groove opened on the U-shaped block; the inclined surface of the shovel is slidably fitted with the corresponding inclined surface on the slide seat to drive the slide seat to move when the front half module and the rear half module are opened.

[0010] Preferably, the mold for the steering wheel accessory further includes a locking mechanism and a spring. The locking mechanism is used to lock the panel to the rear template during the initial stage of mold opening, and the spring is disposed between the panel and the front template.

[0011] Preferably, the mold for the steering wheel accessory also includes a limiting screw for limiting the mold opening stroke between the panel and the front template.

[0012] Preferably, the front mold sliding mechanism further includes a sliding buckle, which is used to position the sliding seat in the mold closed state.

[0013] Preferably, the rear half module further includes a base plate, an ejector plate, and a square iron; the square iron is fixedly connected between the rear template and the base plate, and the ejector plate is slidably disposed within the space defined by the square iron.

[0014] Preferably, a sliding insert is also fixedly connected to the sliding seat, and the profile of the sliding insert, together with the profiles of the front mold core and the rear mold core, constitutes a cavity for product molding.

[0015] Preferably, the front half module further includes a hot nozzle and a hot nozzle sleeve; the mold further includes a positioning ring disposed on the front half module.

[0016] Preferably, the mold further includes a water pipe connector that communicates with the internal cooling water channel of the mold.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model solves the problem of complex processing and assembly and high cost caused by the large number of parts in the sliding mechanism of the front mold by integrating two sliding pressure plates and a bottom wear-resistant plate into a single U-shaped block. It achieves the technical effects of simplifying the mold structure, reducing the number of parts, significantly shortening the manufacturing cycle and reducing production costs.

[0019] 2. This utility model uses an integral U-shaped block to support and guide the slide seat, replacing the method of combining multiple parts. This solves the problems in the prior art that may lead to poor slide fit accuracy and easy loosening after long-term use due to the cumulative tolerance of parts. It achieves the technical effect of improving the stability and durability of slide movement, thereby ensuring the product molding quality.

[0020] 3. This utility model, through its integrated and modular design, makes the installation and debugging of the front mold sliding mechanism simpler and faster, solving the problem of time-consuming and labor-intensive assembly of multiple parts in the prior art, thereby improving the efficiency of fitter assembly and providing convenience for subsequent mold maintenance. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of a mold for a steering wheel accessory proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the spring section of a mold for a steering wheel accessory proposed in this utility model.

[0023] Figure 3 This is a schematic diagram of the excavator section of a mold for a steering wheel accessory proposed in this utility model.

[0024] Figure 4 This is a schematic diagram of the mold opening structure for a steering wheel accessory proposed in this utility model.

[0025] Legend:

[0026] 1. Panel; 2. Positioning ring; 3. Fastener; 4. Front template; 5. Rear template; 6. Base plate; 7. Ejector plate; 8. Square iron; 9. Limit screw; 10. Spring; 11. Heating nozzle sleeve; 12. Heating nozzle; 13. Water pipe connector; 14. Slide insert; 15. Slide fastener; 16. U-shaped block; 17. Slide seat; 18. T-shaped block; 19. Scraper; 20. Front mold core; 21. Rear mold core. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Reference Figures 1 to 4 This utility model provides a mold for steering wheel accessories, which aims to solve the problems of complex structure, cumbersome processing and assembly, and high cost caused by the use of separate parts in the front mold sliding mechanism in the prior art.

[0029] The mold for the steering wheel accessory includes a front half module and a rear half module. The front half module includes a panel 1, a front template 4, and a front mold core 20 fixedly connected to the front template 4. The rear half module includes a rear template 5 and a rear mold core 21 fixedly connected to the rear template 5. The front half module also includes a front mold sliding mechanism that is slidably set on the front template 4. The core of the front mold sliding mechanism is that it includes a sliding seat 17, a U-shaped block 16, a T-shaped block 18, and a shovel 19 fixedly connected to the rear half module.

[0030] Specifically, the U-shaped block 16 is a one-piece molded part, which is fixedly connected to the front template 4 by screws and locking positions. The slide seat 17 is slidably fitted inside the U-shaped block 16. The two parallel side walls of the U-shaped block 16 and the bottom wall connected to the two side walls are used to slide guide and support the two sides and bottom of the slide seat 17, respectively. To further enhance the stability of the guide, the T-shaped block 18 is fixedly connected to the slide seat 17 and slides with the T-shaped guide groove opened on the U-shaped block 16. To realize the driving of the slide seat 17, the inclined surface of the shovel 19 slides with the corresponding inclined surface on the slide seat 17. This structure can convert the linear motion of mold opening into the lateral core pulling motion of the slide seat 17 when the front half module and the rear half module are opened.

[0031] Reference Figure 2 and Figure 4 The two-stage mold opening mechanism is described in detail below: The mechanism includes a latch 3 and a spring 10; the latch 3 is used to lock the front panel 1 of the front half module and the rear template 5 of the rear half module in the initial stage of mold opening, so as to force the front panel 1 and the front template 4 of the front half module to open first; the spring 10 is set between the panel 1 and the front template 4, providing initial spring-opening assistance during mold opening, ensuring that the panel 1 and the front template 4 can be separated smoothly; the mechanism also includes a limit screw 9, which is used to precisely control the mold opening stroke between the control panel 1 and the front template 4. When the mold opening distance reaches the preset value, the head of the limit screw 9 will abut against the corresponding template, thereby stopping the first stage of mold opening action;

[0032] To enable the ejection of the molded product, the rear half module also includes a base plate 6 and an ejection plate 7; the rear half module also includes a square iron 8 fixedly connected between the rear template 5 and the base plate 6, the square iron 8 being used to support the hollow space between the rear template 5 and the base plate 6; the ejection plate 7 is slidably disposed within the hollow space defined by the square iron 8.

[0033] To ensure accurate positioning of the slide seat 17 in the mold-closed state, the front mold slide mechanism also includes a slide buckle 15; to achieve the molding of plastic parts, a slide insert 14 is also fixedly connected to the slide seat 17, and the profile of the slide insert 14, together with the profiles of the front mold core 20 and the rear mold core 21, forms a cavity for product molding; to achieve the injection of molten plastic material, the front half of the mold also includes a hot nozzle 12 and a hot nozzle sleeve 11, and a positioning ring 2 is also provided on the mold; to control the temperature of the mold, a water pipe connector 13 connected to the internal cooling water channel of the mold is also provided on the mold.

[0034] As a preferred embodiment, to achieve a safe and reliable two-stage mold opening action, the mold also includes a locking mechanism 3, a spring 10, and a limiting screw 9. Specifically, the locking mechanism 3 is used to lock the panel 1 and the rear template 5 in the initial stage of mold opening, so as to force the panel 1 and the front template 4 to separate first. The spring 10 is disposed between the panel 1 and the front template 4 to provide assistance for the first stage of mold opening. The limiting screw 9 is used to precisely control the mold opening distance between the control panel 1 and the front template 4 to prevent the stroke from exceeding the preset range.

[0035] As a preferred embodiment, in order to ensure that the slide seat 17 can be firmly locked in the mold closed state to resist injection pressure, the front mold slide mechanism also includes a slide buckle 15, which positions and constrains the slide seat 17 when the mold is closed in place.

[0036] In a preferred embodiment, to achieve the ejection of the plastic part, the rear half module also includes a base plate 6, an ejector plate 7, and a square iron 8; the square iron 8 is fixedly connected between the rear template 5 and the base plate 6, opening a predetermined space between the two, and the ejector plate 7 is slidably disposed inside the space and driven by the ejector rod of the injection molding machine.

[0037] In a preferred embodiment, in order to form an undercut structure on the plastic part, a slide insert 14 is also fixedly connected to the slide seat 17. The surface of the slide insert 14, together with the surfaces of the front mold core 20 and the rear mold core 21, forms a cavity for product molding.

[0038] In a preferred embodiment, to achieve the injection of molten rubber and temperature control of the mold, the front half of the module is also provided with a positioning ring 2, a hot nozzle sleeve 11 and a hot nozzle 12 for guiding and conveying the rubber; the mold is also provided with a water pipe connector 13 that is connected to the internal cooling water channel of the mold for connecting to an external cooling circulation system.

[0039] Working principle: At the beginning of the injection molding cycle, molten plastic raw material enters the front half of the mold assembly through the positioning ring 2, and is injected into the cavity formed by the front mold core 20 and the rear mold core 21 through the hot nozzle sleeve 11 and hot nozzle 12. After filling, pressure holding and cooling are performed. The cooling medium enters the cooling water circuit inside the mold through the water pipe joint 13 for circulation. When the mold opening action is started, the clamping mechanism 3 first locks the panel 1 and the rear mold plate 5 together. At the same time, the spring 10 set between the panel 1 and the front mold plate 4 applies elastic force, forcing the panel 1 and the front mold plate 4 to open first. When the mold opening reaches the predetermined stroke set by the limit screw 9, the clamping mechanism 1 fixed to the rear half of the mold assembly... 9. The inclined surface of the slide seat 17 slides laterally through the sliding engagement between its inclined surface and the corresponding inclined surface on the slide seat 17. During the entire sliding process of the slide seat 17, its two sides and bottom surface always maintain a precise sliding engagement with the two parallel side walls of the U-shaped block 16 and the bottom wall connected to the two side walls. At the same time, the T-shaped block 18 fixed on the slide seat 17 slides in the T-shaped guide groove opened on the U-shaped block 16. The slide seat 17 drives the slide insert 14 on it to disengage from the product undercut. Through this integrated guide structure of the U-shaped block 16 and the T-shaped block 18, this utility model solves the problem of unstable slide movement caused by the cumulative tolerance of dispersed parts in the prior art.

[0040] After the front mold slide core is pulled out, the latch 3 is released, and the front half and rear half of the mold open along the main parting surface. Then, the ejector mechanism of the injection molding machine drives the ejector plate 7 to move forward in the space supported by the square iron 8, ejecting the molded steering wheel parts from the rear mold core 21 and taking them out by the robot. After the ejector plate 7 is reset, the mold closes, the slide latch 15 positions the slide seat 17, and the next production cycle begins.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mold for a steering wheel accessory, comprising a front half module and a rear half module; the front half module comprising a panel (1), a front template (4), and a front mold core (20) fixedly connected to the front template (4); the rear half module comprising a rear template (5) and a rear mold core (21) fixedly connected to the rear template (5); the front half module further comprising a front mold sliding mechanism slidably disposed on the front template (4), the front mold sliding mechanism comprising a sliding seat (17). Its features are, The front mold sliding mechanism also includes a U-shaped block (16), a T-shaped block (18), and a shovel (19) fixedly connected to the rear half-module. The U-shaped block (16) is an integrally molded part, and the U-shaped block (16) is fixedly connected to the front template (4) by screws and clips; The row seat (17) is slidably fitted inside the U-shaped block (16), and the two parallel side walls of the U-shaped block (16) and the bottom wall connected to the two side walls are respectively used to guide and support the two sides and the bottom surface of the row seat (17). The T-shaped block (18) is fixedly connected to the row seat (17) and slides in cooperation with the T-shaped guide groove opened on the U-shaped block (16); The inclined surface of the shovel (19) slides in conjunction with the corresponding inclined surface on the slide seat (17) to drive the slide seat (17) to move when the front half module and the rear half module are opened.

2. The mold for the steering wheel accessory according to claim 1, characterized in that, The mold also includes a latch (3) for locking the panel (1) and the rear template (5) in the initial stage of mold opening, and a spring (10) disposed between the panel (1) and the front template (4).

3. The mold for the steering wheel accessory according to claim 2, characterized in that, The mold also includes a limiting screw (9) for limiting the mold opening stroke between the panel (1) and the front template (4).

4. The mold for the steering wheel accessory according to claim 1, characterized in that, The front mold sliding mechanism also includes a sliding buckle (15) for positioning the sliding seat (17) in the mold closed state.

5. The mold for the steering wheel accessory according to claim 1, characterized in that, The rear half module also includes a base plate (6) and an ejector plate (7); the rear half module also includes a square iron (8) fixedly connected between the rear template (5) and the base plate (6), and the ejector plate (7) is slidably disposed within the space defined by the square iron (8).

6. The mold for the steering wheel accessory according to claim 1, characterized in that, The slide seat (17) is also fixedly connected to a slide insert (14), the surface of the slide insert (14) together with the surface of the front mold core (20) and the rear mold core (21) to form a cavity for product molding.

7. The mold for the steering wheel accessory according to claim 1, characterized in that, The front half module also includes a hot nozzle (12) and a hot nozzle sleeve (11); the mold also includes a positioning ring (2) disposed on the front half module.

8. The mold for the steering wheel accessory according to claim 1, characterized in that, The mold also includes a water pipe connector (13) that is connected to the internal cooling water channel of the mold.

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