Automobile light guide strip forming die

Abstract

The utility model relates to the technical field of automobile parts injection moulding, especially to an automobile light guide strip forming die, including fixed mould, movable mould and stripping mechanism, and the stripping mechanism includes stripping slide block and tripping slide block, and the fixed mould, movable mould, stripping slide block and tripping slide block form the cavity for the forming automobile light guide strip, and the stripping slide block is slidably arranged on the fixed mould along the horizontal X direction, and the tripping slide block is slidably arranged on the fixed mould along the horizontal Y direction, the slide block linkage is fixed on the stripping slide block, the slide block linkage is slidably matched with the tripping slide block along the horizontal Y direction, and when the movable mould drives the stripping slide block to slide and strip along the horizontal X direction, the slide block linkage drives the tripping slide block to slide and trip along the horizontal Y direction.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts injection molding technology, specifically to an automotive light guide strip molding die. Background Technology

[0002] As an important optical component in automotive lighting, the mold for forming automotive light guides typically includes a fixed mold, a moving mold, and a demolding mechanism, with the demolding mechanism located between the fixed mold and the moving mold.

[0003] A demolding mechanism typically includes a demolding slider, a release slider, and a drive component. The demolding slider is slidably mounted on a fixed mold along the horizontal X-direction, and the release slider is slidably mounted on the fixed mold along the horizontal Y-direction. A cavity for molding the automotive light guide strip is formed between the fixed mold, the moving mold, the demolding slider, and the release slider. During mold opening, the moving mold drives the demolding slider to slide along the horizontal X-direction for demolding, and the drive component drives the release slider to slide along the horizontal Y-direction for release. Therefore, in existing molds used for molding automotive light guide strips, the demolding slider and the release slider of the demolding mechanism cannot be linked during mold opening. This necessitates the use of a separate drive component, such as a built-in hydraulic cylinder or an electric telescopic rod, within the fixed mold to drive the release slider to release. Utility Model Content

[0004] In view of this, the present invention provides an automotive light guide strip molding die, which aims to solve the technical problem that the demolding slider and the release slider of the demolding mechanism of the existing automotive light guide strip molding die cannot be linked when the mold is opened, resulting in the need to set up an independent driving component inside the fixed mold to drive the release slider to release.

[0005] To solve the above-mentioned technical problems, this utility model provides an automotive light guide strip molding die, including a fixed mold, a moving mold, and a demolding mechanism. The demolding mechanism includes a demolding slider and a release slider. A cavity for molding the automotive light guide strip is formed between the fixed mold, the moving mold, the demolding slider, and the release slider. The demolding slider is slidably disposed on the fixed mold along the horizontal X direction, and the release slider is slidably disposed on the fixed mold along the horizontal Y direction. A slider linkage is fixed on the demolding slider, and the slider linkage is slidably engaged with the release slider along the horizontal Y direction. When the moving mold drives the demolding slider to slide and demold along the horizontal X direction, the slider linkage drives the release slider to slide and release along the horizontal Y direction.

[0006] Furthermore, a rear mold insert is provided inside the lower part of the fixed mold, and a groove extending along the horizontal Y direction is provided at the upper end of the rear mold insert, and the release slider is slidably adapted to the groove.

[0007] Furthermore, the slider linkage is a dovetail slide rail, which extends along the horizontal X direction and is inclined away from the light guide strip along the horizontal X direction. The end of the release slider facing the dovetail slide rail is provided with a dovetail groove, and the dovetail slide rail is slidably adapted to the dovetail groove.

[0008] Furthermore, the surface of the slide groove is provided with a limiting member, and the lower wall of the release slider is provided with a limiting groove, and the limiting member is embedded in the limiting groove.

[0009] Furthermore, the upper end of the limiting member is provided with a ball bearing, which is adapted to the limiting groove; there are two limiting grooves, which are spaced apart along the horizontal Y direction.

[0010] Furthermore, the limiting member has an elastic element inside, and the upper end of the elastic element abuts against the lower surface of the ball.

[0011] Furthermore, an inclined guide rail is fixedly connected to the bottom of the moving mold. The inclined guide rail is inclined from top to bottom in a direction away from the light guide strip. A guide groove is provided on the demolding slider. The inclined guide rail and the guide groove are slidably adapted to each other, so that when the moving mold rises, it can drive the demolding slider to move and demold along the horizontal X direction through the inclined guide rail.

[0012] Furthermore, the inclined guide rail is a T-shaped guide rail, the guide groove is a T-shaped guide groove, and the T-shaped guide rail and the T-shaped guide groove are slidably adapted to each other.

[0013] Furthermore, the rear mold insert is provided with a molding block, and the upper end of the molding block is provided with an inclined surface, which is used to form the inclined portion of the end of the light guide strip.

[0014] Furthermore, the molding block is detachably mounted on the rear mold insert.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: When the moving mold of this utility model is used to open the automotive light guide strip molding die, it drives the demolding slider to slide from right to left along the horizontal X direction, causing the demolding slider to slide away from the light guide strip for demolding. During the sliding of the demolding slider, the slider linkage component, which is connected and fixed to the demolding slider, moves synchronously. Since the slider linkage component and the release slider slide and adapt to each other along the horizontal Y direction, when the slider linkage component slides from right to left along the horizontal X direction, it will drive the release slider to slide from front to back along the horizontal Y direction, so that the release slider slides away from the light guide strip for release. Thus, the demolding slider and the release slider achieve linkage through the sliding linkage component, eliminating the need to set up an independent drive component inside the fixed mold to drive the release slider to release. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the mold of this utility model; Figure 2 This is a schematic diagram of the demolding mechanism involved in the embodiment; Figure 3 For the purposes of this embodiment Figure 2 Schematic diagram of the structure after the mold is opened; Figure 4 This is a schematic diagram of the structure after the rear mold insert and the release slider are separated, as described in the embodiment. Figure 5 This is a schematic diagram of the bottom structure of the tripping slider in an embodiment; Figure 6 This is a schematic diagram of the structure of the elastic element involved in the embodiment; Figure 7 This is a cross-sectional view of the internal structure of the elastic element involved in the embodiment.

[0017] Numbering in each attached figure: 100. Fixed mold; 200. Light guide strip; 300. Demolding mechanism; 310. Demolding slider; 311. Guide groove; 320. Release slider; 321. Dovetail groove; 322. Limiting groove; 330. Slider linkage component; 340. Rear mold insert; 341. Slide groove; 342. Molding block; 350. Guide seat; 360. Inclined guide rail; 370. Limiting component; 371. Ball bearing; 372. Cavity; 373. Elastic component. Detailed Implementation

[0018] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0019] In the description of this utility model, it should be understood that the terms "width", "upper", "lower", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through other features. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] Please refer to Figures 1-7 This utility model provides a molding die for an automotive light guide strip, including a fixed mold 100, a moving mold (not shown), and a demolding mechanism 300. The moving mold is controlled to rise and fall by a driving mechanism (not shown) in the mold. The demolding mechanism 300 includes a demolding slider 310 and a release slider 320. When the fixed mold 100 and the moving mold are in the closed state, the fixed mold 100, the moving mold, the demolding slider 310, and the release slider 320 together form a cavity, which is used to form an automotive light guide strip 200.

[0023] The demolding slider 310 is slidably mounted on the fixed mold 100 along the horizontal X direction, and the release slider 320 is slidably mounted on the fixed mold 100 along the horizontal Y direction; the two ends in the horizontal X direction are the left and right ends, and the two ends in the horizontal Y direction are the front and rear ends. A slider linkage 330 is fixed on the side wall of the demolding slider 310 facing the release slider 320. The slider linkage 330 and the release slider 320 are slidably engaged in the horizontal Y direction. When the moving mold drives the demolding slider 310 to slide and demold along the horizontal X direction, the slider linkage 330 drives the release slider 320 to slide and release along the horizontal Y direction.

[0024] During mold opening, the moving mold drives the demolding slider 310 to slide from right to left along the horizontal X direction to perform the demolding operation. During this process, the slider linkage 330 fixed to the demolding slider 310 moves synchronously, and through the sliding engagement between the slider linkage 330 and the release slider 320, it drives the release slider 320 to slide from front to back along the horizontal Y direction, so that the release slider 320 gradually moves away from the cavity to complete the release action. Thus, the demolding slider 310 and the release slider 320 can achieve linkage by sliding the linkage, eliminating the need to set up an independent drive component inside the fixed mold 100 to drive the release slider 320 to release, thereby saving costs and avoiding the space occupation caused by setting up an independent drive component on the fixed mold to drive the release slider 320 to release.

[0025] Reference Figure 1 and Figure 2The lower part of the fixed mold 100 is provided with a rear mold insert 340. The upper end of the rear mold insert 340 is provided with a slide groove 341 extending in the horizontal Y direction. The release slider 320 is slidably adapted to the slide groove 341, so that the release slider 320 can slide in the slide groove 341 in the horizontal Y direction.

[0026] During the mold opening process, when the release slider 320 is driven by the slider linkage 330, the groove 341 on the rear mold insert 340 provides guidance for the sliding of the release slider 320, so that the release slider 320 slides smoothly from front to back along the horizontal Y direction.

[0027] Reference Figure 2 and Figure 3 The slider linkage 330 is a dovetail slide rail, which is fixed to the side wall of the demolding slider 310 facing the release slider 320. The dovetail slide rail extends along the horizontal X direction and is inclined away from the light guide strip 200 along the horizontal X direction. That is, it can be understood that the dovetail slide rail is inclined from left to right rear end along the horizontal X direction. Correspondingly, the end of the release slider 320 facing the dovetail slide rail (i.e., the rear end of the release slider 320) is provided with a dovetail groove 321 that matches the dovetail slide rail. The dovetail groove 321 and the dovetail slide rail are slidably adapted.

[0028] Specifically, during mold opening, the demolding slider 310 drives the dovetail slide rail to move from right to left along the horizontal X direction. The dovetail slide rail tilts from left to right at the rear end along the horizontal X direction, and its displacement in the tilting direction will act on the inner wall of the dovetail groove 321. Since the release slider 320 is restricted by the slide groove 341 and can only slide back and forth along the horizontal Y direction, during the demolding process of the demolding slider 310 sliding from right to left, the dovetail slide rail will drive the release slider 320 to slide from front to back along the slide groove 341, so that the release slider 320 disengages from the light guide strip 200 to achieve the release operation.

[0029] Reference Figure 4 and Figure 5 In order to control the movement stroke required for the release slider 320 to release, the slide groove 341 surface of the rear mold insert 340 is provided with a limiting member 370, and a limiting groove 322 is correspondingly opened on the lower wall surface of the release slider 320, and the limiting member 370 is embedded in the limiting groove 322.

[0030] Specifically, a through groove is provided vertically inside the rear mold insert 340 and at the location corresponding to the slide groove 341. The limiting member 370 is embedded in the through groove and protrudes upward.

[0031] When the trip slider 320 slides back and forth, the inner end wall of the limiting groove 322 will come into contact with the limiting member 370, thereby limiting its sliding range and preventing the trip slider 320 from coming out of the groove 341.

[0032] Reference Figure 5 and Figure 6 To reduce the frictional resistance during the movement of the trip slider 320, a ball bearing 371 is provided at the upper end of the limiting member 370, and a limiting groove 322 matches the ball bearing 371. The ball bearing 371 contacts the limiting groove 322 of the trip slider 320. There are two limiting grooves 322, which are spaced apart along the horizontal Y direction.

[0033] When the mold is closed, the ball bearing 371 is embedded in the rear limiting groove 322. When the release slider 320 slides from front to back to release, the ball bearing 371 disengages from the rear limiting groove 322 and instead embeds into the front limiting groove 322, thereby limiting the movement range of the release slider 320. When the release slider 320 moves, the ball bearing 371 can roll, thus converting the traditional sliding friction into rolling friction.

[0034] Reference Figure 6 and Figure 7 The limiting member 370 has an elastic member 373 inside, and the upper end of the elastic member 373 abuts against the lower surface of the ball 371.

[0035] Specifically, a cavity 372 is vertically oriented through the limiting member 370. The ball 371 slides vertically into the cavity 372. The upper opening of the cavity 372 is smaller than the outer diameter of the ball 371, allowing part of the ball 371 to extend upwards out of the cavity 372, thus preventing the ball 371 from completely dislodging from the cavity 372. An elastic member 373 is housed inside the cavity 372, and its top end always provides upward support for the ball 371.

[0036] During the mold opening process, when the release slider 320 begins to slide backward to release, the ball 371 slides out from the rear limiting groove 322 and comes into contact with the lower wall surface of the release slider 320. At this time, under the squeezing action of the release slider 320, the ball 371 moves downward along the cavity 372, compressing the elastic element 373 below. Until the release slider 320 moves to the front limiting groove 322 and aligns with the ball 371, the compressed elastic element 373 begins to rebound and pushes the ball 371 upward to reset, so that it is accurately embedded in the front limiting groove 322.

[0037] The distance between the two limiting grooves 322 defines the stroke required for the tripping slider 320 to complete the tripping action. This elastic limit not only effectively controls the range of movement of the tripping slider 320, but also provides a clear positioning feel through the cooperation of the ball 371 and the limiting groove 322. In this embodiment, the elastic element 373 is preferably a spring, but other elastic structures may be selected in other embodiments, which are not limited here.

[0038] Reference Figure 2 and Figure 3A guide seat 350 is fixed on the outside of the fixed mold 100. The guide seat 350 extends along the horizontal X direction, and the demolding slider 310 is slidably fitted on the guide seat 350. An inclined guide rail 360 is fixedly connected to the bottom of the moving mold and to the left of the demolding slider 310. The inclined guide rail 360 is inclined from top to bottom away from the light guide strip 200. A guide groove 311 is provided on the demolding slider 310. The inclined guide rail 360 and the guide groove 311 are slidably fitted, so that when the moving mold rises, the demolding slider 310 can be moved along the horizontal X direction for demolding through the inclined guide rail 360.

[0039] When the mold opens, the moving mold moves upward, and the inclined guide rail 360 fixed on it rises accordingly. Since the inclined guide rail 360 is inclined, it will act on the guide groove 311 of the demolding slider 310 during the rising process, so as to generate a horizontal component force on the demolding slider 310, thereby driving the demolding slider 310 to slide from right to left in the horizontal X direction in the guide seat 350, so as to move the demolding slider 310 away from the light guide strip 200 to realize the demolding operation.

[0040] Reference Figure 2 and Figure 3 The inclined guide rail 360 is a T-shaped guide rail, and correspondingly, the guide groove 311 is a T-shaped guide groove 311. The T-shaped guide rail and the T-shaped guide groove 311 are slidably adapted to each other. The T-shaped mating structure can effectively withstand the forces generated in various directions during the demolding process, especially the lateral forces, and prevent the demolding slider 310 from tilting or shifting during movement.

[0041] Reference Figure 4 The rear mold insert 340 is provided with a molding block 342. The upper end of the molding block 342 is provided with an inclined surface. The inclined surface is used to form the inclined part of the end of the light guide strip 200. The molding block 342 enables the precise forming of local complex features on the product, simplifies the processing difficulty of the core insert, and the molding block 342 is detachably installed on the rear mold insert 340 by screws. The detachable molding block 342 makes it easy to process the molding block 342 separately to adapt to the polishing or texturing of specific parts of the light guide strip 200.

[0042] In summary, the working principle of this utility model is as follows: After the light guide strip 200 is injection molded and cooled in the cavity, the moving mold begins to rise under the control of the drive mechanism to enter the mold opening stage.

[0043] When the moving mold rises, it drives the inclined guide rail 360 to rise as well. Since the inclined guide rail 360 slides into the guide groove 311 on the demolding slider 310, the inclined guide rail 360 converts the vertical upward motion of the moving mold into a horizontal motion acting on the demolding slider 310. This causes the demolding slider 310 to slide from right to left along the horizontal X direction on the guide seat 350, allowing it to begin to detach from the main surface of the light guide strip 200. Simultaneously, the dovetail slide rail fixed to the side wall of the demolding slider 310 moves synchronously to the left. Because the dovetail slide rail is inclined backward from left to right in the horizontal X direction, its inclined extension path exerts a backward force on the inner wall of the dovetail groove 321 as it moves to the left. This force causes the release slider 320 to slide from front to back along the horizontal Y direction on the slide groove 341, so that the release slider 320 slides and releases. This allows the release slider 320 and the demolding slider 310 to be linked together, eliminating the need to set up an independent drive component inside the fixed mold 100 to drive the release slider 320 to release.

[0044] It should be noted that the drive mechanism is a conventional technology in the existing injection molding field, and will not be elaborated here.

[0045] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A molding die for forming an automotive light guide strip, comprising a fixed mold, a moving mold, and a demolding mechanism, the demolding mechanism comprising a demolding slider and a release slider, wherein a cavity for forming an automotive light guide strip is formed between the fixed mold, the moving mold, the demolding slider, and the release slider, the demolding slider being slidably disposed on the fixed mold along the horizontal X direction, and the release slider being slidably disposed on the fixed mold along the horizontal Y direction; characterized in that: A slider linkage is fixed on the demolding slider. The slider linkage and the release slider slide in a horizontal Y direction. When the moving mold drives the demolding slider to slide in a horizontal X direction to demold, the slider linkage drives the release slider to slide and release in a horizontal Y direction.

2. The automotive light guide strip forming mold as described in claim 1, characterized in that: The lower part of the fixed mold is provided with a rear mold insert, and the upper end of the rear mold insert is provided with a sliding groove extending in the horizontal Y direction. The release slider is slidably adapted to the sliding groove.

3. The automotive light guide strip forming mold as described in claim 1, characterized in that: The slider linkage is a dovetail slide rail, which extends along the horizontal X direction and is inclined away from the light guide strip along the horizontal X direction. The end of the release slider facing the dovetail slide rail is provided with a dovetail groove, and the dovetail slide rail is slidably adapted to the dovetail groove.

4. The automotive light guide strip forming mold as described in claim 2, characterized in that: The surface of the slide groove is provided with a limiting member, and the lower wall of the release slider is provided with a limiting groove, and the limiting member is embedded in the limiting groove.

5. The automotive light guide strip forming mold as described in claim 4, characterized in that: The upper end of the limiting member is provided with a ball bearing, which is adapted to the limiting groove; there are two limiting grooves, which are spaced apart along the horizontal Y direction.

6. The automotive light guide strip forming mold as described in claim 5, characterized in that: The limiting member has an elastic element inside, and the upper end of the elastic element abuts against the lower surface of the ball.

7. The automotive light guide strip forming mold as described in claim 1, characterized in that: The bottom of the moving mold is fixedly connected to an inclined guide rail, which is inclined from top to bottom away from the light guide strip. The demolding slider is provided with a guide groove, and the inclined guide rail is slidably adapted to the guide groove so that when the moving mold rises, it can drive the demolding slider to move and demold along the horizontal X direction through the inclined guide rail.

8. The automotive light guide strip forming mold as described in claim 7, characterized in that: The inclined guide rail is a T-shaped guide rail, and the guide groove is a T-shaped guide groove. The T-shaped guide rail and the T-shaped guide groove are slidably adapted to each other.

9. The automotive light guide strip forming mold as described in claim 2, characterized in that: The rear mold insert is provided with a molding block, and the upper end of the molding block is provided with an inclined surface, which is used to form the inclined part of the end of the light guide strip.

10. The automotive light guide strip forming mold as described in claim 9, characterized in that: The molding block can be detachably installed on the rear mold insert.

Images