Core pulling structure for automobile lamp injection mold

Abstract

The utility model relates to the technical field of core-pulling structures of injection molds, and discloses a core-pulling structure for an automobile lamp injection mold, which comprises a support, a static mold is mounted on the support, a movable mold is arranged on one side of the static mold, a toothed plate is mounted on the support, a first movable groove is formed in the movable mold, and a second movable groove is formed in the movable mold. And a second movable groove is formed below the first movable groove, an abutting rod is inserted into the first movable groove, one end of the abutting rod is sleeved with an abutting spring, an inclined core rod is inserted into the second movable groove in a sliding mode, and an annular tooth groove is formed in the lower portion of the inclined core rod. According to the structure, the annular tooth groove is formed in the inclined core rod and makes contact with the first gear, when the inclined core rod needs to be replaced, the movable mold is moved to the side of the support, the first gear is disengaged from the annular tooth groove, at the moment, the inclined core rod can be pulled away and replaced, and the structure is convenient and rapid to replace the inclined core rod.

Description

Technical Field

[0001] This utility model relates to the technical field of core-pulling structure for injection molds, specifically a core-pulling structure for automotive headlight injection molds. Background Technology

[0002] Most automotive headlight housings are formed by injection molding. The mold opening process can be summarized as follows: after the product is formed in the mold cavity inside the mold, the moving mold moves and separates from the fixed mold to open the mold cavity and remove the product. Inside the headlight housing, there is a positioning block for installing a transparent dust cover. The headlight housing also has a positioning groove for connecting with the vehicle body.

[0003] The main function of the core-pulling structure is to allow the lateral core or slider to smoothly detach from the plastic part when the mold opens, so that the plastic part can be completely removed from the mold.

[0004] In common core-pulling structures, the inclined guide pillar is in the fixed mold and the slider is in the moving mold; the inclined guide pillar is in the moving mold and the slider is in the fixed mold; the inclined guide pillar and slider are both in the fixed mold; the inclined guide pillar and slider are both in the moving mold, etc. This type of structure is simple, easy to manufacture and maintain, and suitable for various core-pulling applications. However, the above core-pulling structures require multiple sliders to cooperate, and the replacement process is cumbersome when the mandrel wears out. Therefore, those skilled in the art provide a core-pulling structure for automotive headlight injection molds to solve the problems mentioned in the background art. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a core-pulling structure for automotive headlight injection molds, which solves the problem that traditional core-pulling structures require multiple sliders for cooperation, and the replacement process is cumbersome when the mandrel wears out.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a core-pulling structure for an automotive headlight injection mold, comprising a bracket, a stationary mold mounted on the bracket, a moving mold disposed on one side of the stationary mold, a toothed plate mounted on the bracket, a first movable groove formed in the moving mold, a second movable groove formed below the first movable groove, a pressing rod inserted into the first movable groove, a pressing spring sleeved on one end of the pressing rod, a slidably inserted inclined core rod in the second movable groove, an annular toothed groove formed at the lower part of the inclined core rod, a first gear disposed below the inclined core rod, a rotating shaft mounted at both ends of the first gear, a second gear mounted at the other end of the rotating shaft, and a hydraulic rod mounted on one side of the bracket.

[0009] Preferably, the hydraulic rod is connected to the moving mold, thereby driving the moving mold to reciprocate on the support to achieve the mold opening state before demolding.

[0010] Preferably, the first gear engages with the inclined core rod through an annular tooth groove, and the second gear engages with the toothed plate. When the hydraulic rod drives the moving mold away from the stationary mold, the finished product is carried away from the stationary mold along with the inclined core rod protruding from the moving mold. The second gear rotates when it contacts the toothed plate. The rotating second gear drives the first gear to rotate through the rotating shaft. When the first gear rotates, it drives the inclined core rod with the annular tooth groove to retract into the second movable groove. At this time, the inclined core rod disengages from the finished product.

[0011] Preferably, the pressing rod is slidably sleeved with the first movable groove, one end of the pressing spring is connected to the end of the pressing rod away from the stationary mold, and the other end of the pressing spring is in pressing contact with the moving mold. When the moving mold moves, one end of the pressing rod is in pressing contact with the bracket, thereby causing the other end to protrude out of the moving mold and squeeze the finished product, so that the finished product is squeezed off and demolding is completed.

[0012] Preferably, the inclined core rod is set at an inclined angle.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a core-pulling structure for automotive headlight injection molds, which has the following beneficial effects:

[0015] By design, when the hydraulic rod moves the moving mold away from the stationary mold, the finished product is carried away from the stationary mold along with the inclined core rod protruding from the moving mold. As the moving mold moves, the second gear rotates when it contacts the toothed plate. The rotating second gear drives the first gear to rotate through the shaft. When the first gear rotates, it drives the inclined core rod with the annular toothed groove to retract into the second movable groove. At this time, the inclined core rod disengages from the finished product. When the moving mold moves, one end of the pressure rod presses against the bracket, causing the other end to protrude from the moving mold and squeeze the finished product, thus squeezing the finished product off and completing the demolding. In this structure, the inclined core rod has an annular toothed groove that contacts the first gear. When the inclined core rod needs to be replaced, the moving mold is moved to the side of the bracket, so that the first gear disengages from the annular toothed groove. At this time, the inclined core rod can be pulled out and replaced. This structure makes it convenient and quick to replace the inclined core rod. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a core-pulling structure for an automotive headlight injection mold provided in an embodiment of this application.

[0017] Figure 2 This is a cross-sectional view of a core-pulling structure for an automotive headlight injection mold provided in an embodiment of this application.

[0018] Figure 3 This is a cross-sectional view of the working structure of a core-pulling structure for an automotive headlight injection mold provided in this application embodiment.

[0019] Figure 4 This is a schematic diagram of the inclined core rod in a core-pulling structure for an automotive headlight injection mold provided in an embodiment of this application.

[0020] In the diagram: 1. Support; 2. Static mold; 3. Toothed plate; 4. Moving mold; 401. First movable groove; 402. Second movable groove; 5. Pressing rod; 6. Pressing spring; 7. Inclined core rod; 8. Annular toothed groove; 9. First gear; 10. Rotating shaft; 11. Second gear; 12. Hydraulic rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0022] This utility model provides a technical solution: a core-pulling structure for automotive headlight injection molds. Please refer to [link / reference]. Figure 1 , Figure 2 , Figure 4 The system includes a bracket 1, on which a stationary mold 2 is mounted. A moving mold 4 is provided on one side of the stationary mold 2. A toothed plate 3 is mounted on the bracket 1. A first movable groove 401 is provided in the moving mold 4. A second movable groove 402 is provided below the first movable groove 401. A pressing rod 5 is inserted into the first movable groove 401. A pressing spring 6 is sleeved on one end of the pressing rod 5. A slidable core rod 7 is inserted into the second movable groove 402. The slidable core rod 7 is set at an inclined angle. An annular toothed groove 8 is provided at the lower part of the slidable core rod 7. A first gear 9 is provided below the slidable core rod 7. A rotating shaft 10 is installed at both ends of the first gear 9. A second gear 11 is installed at the other end of the rotating shaft 10. A hydraulic rod 12 is installed on one side of the bracket 1.

[0023] Please see Figure 2 , Figure 3 , Figure 4The hydraulic rod 12 is connected to the moving mold 4, thereby driving the moving mold 4 to reciprocate on the support 1, realizing the mold opening state before demolding. The first gear 9 contacts and meshes with the inclined core rod 7 through the annular tooth groove 8, and the second gear 11 contacts and meshes with the tooth plate 3. When the hydraulic rod 12 drives the moving mold 4 away from the stationary mold 2, the finished product is carried away from the stationary mold 2 along with the inclined core rod 7 protruding from the moving mold 4. The second gear 11 rotates when it contacts the tooth plate 3. The rotating second gear 11 drives the first gear 9 to rotate through the rotating shaft 10. During rotation, the inclined core rod 7 with annular toothed groove 8 is driven to retract into the second movable groove 402. At this time, the inclined core rod 7 is disengaged from the finished product. The pressing rod 5 is slidably sleeved with the first movable groove 401. One end of the pressing spring 6 is connected to the end of the pressing rod 5 away from the stationary mold 2. The other end of the pressing spring 6 is in pressing contact with the moving mold 4. When the moving mold 4 moves, it causes one end of the pressing rod 5 to press against the bracket 1, thereby causing the other end to protrude out of the moving mold 4 and squeeze the finished product, so that the finished product is squeezed off and demolding is completed.

[0024] The automotive headlight injection mold in this utility model consists of a bracket 1, a stationary mold 2, and a moving mold 4. The stationary mold 2 is fixedly installed at one end of the bracket 1, and the moving mold 4 is positioned opposite to the stationary mold 2 on one side. A hydraulic rod 12 is installed on the side of the bracket 1 away from the stationary mold 2. The hydraulic rod 12 is connected to the moving mold 4, thereby driving the moving mold 4 to reciprocate on the bracket 1. A toothed plate 3 is installed on the bracket 1, and a second gear 11 is provided on the upper side of the toothed plate 3 and meshes with it.

[0025] A first movable groove 401 and a second movable groove 402 are provided in the moving mold 4. A pressing rod 5 is slidably inserted in the first movable groove 401, and a pressing spring 6 is sleeved on one end of the pressing rod 5. A slanted core rod 7 is provided in the second movable groove 402, and the slanted core rod 7 is slidably inserted in the second movable groove 402. An annular toothed groove 8 is provided on the lower circumference of the slanted core rod 7, and a first gear 9 is provided on the lower side of the slanted core rod 7. The first gear 9 meshes with the end of the slanted core rod 7 with the annular toothed groove 8, and a second gear 11 is connected to both sides of the first gear 9 through a rotating shaft 10.

[0026] When the hydraulic rod 12 moves the moving mold 4 away from the stationary mold 2, the finished product is carried away from the stationary mold 2 along with the inclined core rod 7 protruding from the moving mold 4. As the moving mold 4 moves, the second gear 11 rotates when it contacts the toothed plate 3. The rotating second gear 11 drives the first gear 9 to rotate through the rotating shaft 10. When the first gear 9 rotates, it drives the inclined core rod 7 with the annular tooth groove 8 to retract into the second movable groove 402. At this time, the inclined core rod 7 disengages from the finished product. When the moving mold 4 moves, one end of the pressing rod 5 presses against the bracket 1, thereby causing the other end to protrude from the moving mold 4 and squeeze the finished product, thus squeezing the finished product off and completing the demolding. In this structure, the inclined core rod 7 has an annular tooth groove 8 that contacts the first gear 9. When the inclined core rod 7 needs to be replaced, the moving mold 4 is moved to the side of the bracket 1, so that the first gear 9 disengages from the annular tooth groove 8. At this time, the inclined core rod 7 can be replaced. This structure makes it convenient and quick to replace the inclined core rod 7.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] In this document, unless otherwise expressly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise expressly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A core-pulling structure for automotive headlight injection molds, comprising a bracket (1), characterized in that: A stationary mold (2) is installed on the bracket (1). A moving mold (4) is provided on one side of the stationary mold (2). A toothed plate (3) is installed on the bracket (1). A first movable groove (401) is provided in the moving mold (4). A second movable groove (402) is provided below the first movable groove (401). A pressing rod (5) is inserted into the first movable groove (401). A pressing spring (6) is sleeved on one end of the pressing rod (5). A slidable core rod (7) is slidably inserted into the second movable groove (402). An annular toothed groove (8) is provided at the lower part of the slidable core rod (7). A first gear (9) is provided below the slidable core rod (7). A rotating shaft (10) is installed at both ends of the first gear (9). A second gear (11) is installed at the other end of the rotating shaft (10). A hydraulic rod (12) is installed on one side of the bracket (1).

2. The core-pulling structure for automotive headlight injection molds according to claim 1, characterized in that: The hydraulic rod (12) is connected to the moving mold (4).

3. The core-pulling structure for automotive headlight injection molds according to claim 1, characterized in that: The pressing rod (5) is slidably sleeved with the first movable groove (401), one end of the pressing spring (6) is connected to the end of the pressing rod (5) away from the stationary mold (2), and the other end of the pressing spring (6) is in pressing contact with the moving mold (4).

4. The core-pulling structure for automotive headlight injection molds according to claim 1, characterized in that: The first gear (9) engages with the inclined core rod (7) through the annular tooth groove (8).

5. The core-pulling structure for an automotive headlight injection mold according to claim 1, characterized in that: The second gear (11) engages with the toothed plate (3).

6. The core-pulling structure for an automotive headlight injection mold according to claim 1, characterized in that: The inclined core rod (7) is set at an inclined angle.

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