Integrated injection mold for lamp holder without inner frame

Abstract

The utility model discloses an integrated injection mold for a lamp holder without an inner frame, which relates to the technical field of injection molds and comprises a lower mold and an upper mold, injection cavities are formed in the lower mold and the upper mold, and one side of the lower mold and one side of the upper mold are movably connected with a sliding plate. Firstly, the sliding plate and the lifting plate are driven to be opened under the action of the two sets of pen holder air cylinders, the sliding plate drives the center block to move while moving, the center block moves relative to the multiple sets of inward shrinkage blocks, and the inward shrinkage blocks conduct radial shrinkage while moving; at the moment, the sliding plate drives the multiple sets of inward shrinkage blocks to be separated from the injection molding cavity through the center block, the upper mold and the lower mold are separated from each other under the action of an external mold opening mechanism, then the formed lamp holder can be taken out, the inward shrinkage structure is adopted, the lamp holder and threads on the inner wall of the lamp holder are subjected to integrated injection molding, and the problem that later assembling is needed is solved; and meanwhile, the overall production and processing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an integrated injection mold for a lamp holder without an inner frame. Background Art

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of the injection molding method are fast production speed, high efficiency, automated operation, a wide variety of patterns and colors, shapes from simple to complex, sizes from large to small, and precise product dimensions. The product is easy to update and can be made into parts with complex shapes. Injection molding is suitable for mass production and molding processing fields such as products with complex shapes.

[0003] At present, the inner wall of the lamp holder often contains a copper threaded connection tube. During its production, only the lamp holder shell is injection molded. After the injection molding is completed, the copper connection tube with a thread needs to be assembled into the lamp holder shell before it can be connected with the photo light bulb for use.

[0004] In the prior art, the lamp housing is separately injection molded, and after the injection molding is completed, it needs to be connected and assembled with the copper connecting cylinder driving the thread. The overall operation is relatively troublesome, and the assembly process is increased, which greatly reduces the overall production and processing efficiency. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide an integrated injection mold for a lamp holder without an inner frame, so as to solve the technical problem that the lamp holder shell is separately injected in the prior art, and after the injection molding is completed, it needs to be connected and assembled with the copper connecting cylinder that drives the thread. The overall operation is more troublesome, and the assembly process is increased, which greatly reduces the overall production and processing efficiency.

[0006] To achieve the above object, the utility model provides the following technical solution: an integral injection mold for a lamp holder without an inner frame, comprising a lower mold and an upper mold, wherein an injection cavity is formed inside the lower mold and the upper mold, and a sliding plate is movably connected to one side of the lower mold and the upper mold;

[0007] The top of the sliding plate is slidably connected to a lifting plate, a central block extending to the inside of the injection molding cavity is fixed to the inner sides of the sliding plate and the lifting plate, a retracting block is obliquely slidably connected to the outer sides of the central block, a limiting guide block extending to the inside of multiple groups of retracting blocks is fixed to the outer side of the central block, and the multiple groups of retracting blocks are provided with limiting guide grooves matched with the limiting guide blocks, a core pulling rod is fixed at the center position of one side of the central block, and the core pulling rod passes through the injection molding cavity;

[0008] Pen cylinders are installed at both ends of the lower mold, the output end of the pen cylinder is fixedly connected to the inner side of the sliding plate, cooling water pipes located outside the injection cavity are fixed inside the lower mold and the upper mold, and an injection pipe connected to the injection cavity is arranged at the center of the upper mold;

[0009] A telescopic plate extending into the interior of the sliding plate is fixed at the bottom of the lifting plate, and a telescopic groove matching with the telescopic plate is provided inside the sliding plate.

[0010] By adopting the above technical scheme, the lower mold and the upper mold are closed to each other to form an injection cavity, and a center block and multiple groups of shrink blocks are arranged inside the injection cavity. When the external injection molding machine injects the injection cavity and the lamp head is cooled and formed as a whole, the sliding plate and the lifting plate are first driven to open under the action of the two groups of pen cylinders. When the sliding plate moves, it also drives the center block to move. The center block moves relative to the multiple groups of shrink blocks. The shrink blocks move and radially shrink themselves at the same time. Due to the cooperation of the limiting guide block ring and the limiting guide groove, when the center block moves to the maximum position, the sliding plate drives the multiple groups of shrink blocks to leave the injection cavity through the center block. At this time, under the action of the external mold opening mechanism, the upper mold and the lower mold are separated from each other, and then the molded lamp head can be taken out. It can be seen from the above that the use of the shrinking structure allows the lamp head and the thread of its inner wall to be integrally injection molded, which not only avoids the problem of needing later assembly, but also improves the overall production and processing efficiency.

[0011] Furthermore, the sliding plate and the lifting plate are fixed with first guide rods extending to the interior of the lower mold and the upper mold respectively at both ends of the inner side, and second guide rods extending to the interior of the lower mold are fixed at the four corners of the bottom of the upper mold, and a guide hole matching the second guide rod is opened inside the lower mold.

[0012] By adopting the above technical solution, the first guide rod plays a guiding role when the sliding plate and the lifting plate are opened, and the second guide rod plays a guiding role when the lower mold and the upper mold are opened.

[0013] Furthermore, connecting plates are fixed at both ends of the lower mold and the upper mold, and connecting holes are opened inside the connecting plates.

[0014] By adopting the above technical solution, the connecting plate and the external standard mold frame are installed and connected to each other, and then the whole is installed inside the injection molding machine, so that the external mold opening mechanism is connected to the upper mold, and then the mold opening mechanism can drive the upper mold to open relative to the lower mold.

[0015] In summary, the utility model mainly has the following beneficial effects: the utility model forms an injection cavity by closing the lower mold and the upper mold with each other, and a center block and multiple groups of shrink blocks are arranged inside the injection cavity. When the external injection molding machine injects the injection cavity and the lamp holder is cooled and formed as a whole, the sliding plate and the lifting plate are first driven to open under the action of the two groups of pen cylinders. When the sliding plate moves, it also drives the center block to move. The center block moves relative to the multiple groups of shrink blocks. The shrink blocks move and radially shrink themselves at the same time. Due to the cooperation of the limiting guide block ring and the limiting guide groove, when the center block moves to the maximum position, the sliding plate drives the multiple groups of shrink blocks to leave the injection cavity through the center block. At this time, under the action of the external mold opening mechanism, the upper mold and the lower mold are separated from each other, and then the molded lamp holder can be taken out. As can be seen from the above, the shrinking structure is adopted to make the lamp holder and the thread of its inner wall one-piece injection molding, which not only avoids the problem of needing later assembly, but also improves the overall production and processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall development of the utility model;

[0017] Figure 2 It is an exploded and enlarged view of the local structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the overall structure of the utility model.

[0019] In the figure: 1. lower mold; 2. upper mold; 3. injection cavity; 4. sliding plate; 5. lifting plate; 6. center block; 7. retracting block; 8. limiting guide block; 9. limiting guide groove; 10. core pulling rod; 11. pen cylinder; 12. first guide rod; 13. second guide rod; 14. telescopic plate; 15. injection tube; 16. cooling water pipe; 17. connecting plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0021] The following describes an embodiment of the utility model based on its overall structure.

[0022] An integral injection mold for a lamp holder without an inner frame, such as Figure 1-3 As shown, it comprises a lower mold 1 and an upper mold 2, an injection cavity 3 is formed inside the lower mold 1 and the upper mold 2, and a sliding plate 4 is movably connected to one side of the lower mold 1 and the upper mold 2;

[0023] A lifting plate 5 is slidably connected to the top of the sliding plate 4. A central block 6 extending to the inside of the injection molding cavity 3 is fixed on the inner sides of the sliding plate 4 and the lifting plate 5. A retracting block 7 is obliquely and slidably connected to the outer sides of the central block 6. A limiting guide block 8 extending to the inside of multiple groups of retracting blocks 7 is fixed on the outer side of the central block 6. A limiting guide groove 9 matching the limiting guide block 8 is provided inside the multiple groups of retracting blocks 7. A core pulling rod 10 is fixed at the center position of one side of the central block 6, and the core pulling rod 10 passes through the injection molding cavity 3. When the sliding plate 4 moves, the central block 6 is also driven to move. The central block 6 moves relative to the multiple groups of retracting blocks 7. The retracting blocks 7 move while radially contracting themselves, thereby causing the threads on the outer sides of the multiple groups of retracting blocks 7 to detach from the threads formed by the injection molding product.

[0024] Both ends of the lower mold 1 are equipped with pen cylinders 11, the output end of the pen cylinder 11 is fixedly connected to the inner side of the sliding plate 4, the lower mold 1 and the upper mold 2 are both fixed with cooling water pipes 16 located outside the injection cavity 3, and the center of the upper mold 2 is provided with an injection pipe 15 connected to the injection cavity 3;

[0025] A telescopic plate 14 extending into the interior of the sliding plate 4 is fixed to the bottom of the lifting plate 5 , and a telescopic groove matching with the telescopic plate 14 is provided inside the sliding plate 4 .

[0026] See also Figure 1 The sliding plate 4 and the lifting plate 5 are both fixed with first guide rods 12 extending to the inside of the lower mold 1 and the upper mold 2 respectively at both ends of the inner side, and the second guide rods 13 extending to the inside of the lower mold 1 are fixed at the four corners of the bottom of the upper mold 2, and the lower mold 1 is provided with a guide hole matching the second guide rod 13. The utility model sets the above structure, wherein the first guide rod 12 plays a guiding role when the sliding plate 4 and the lifting plate 5 are opened, and the second guide rod 13 plays a guiding role when the lower mold 1 and the upper mold 2 are opened.

[0027] See also Figure 1 and Figure 3 A connecting plate 17 is fixed at both ends of the lower mold 1 and the upper mold 2, and a connecting hole is opened inside the connecting plate 17. The utility model sets the above structure, wherein the connecting plate 17 is installed and connected with the external standard mold frame, and then the whole is installed inside the injection molding machine, so that the external mold opening mechanism is connected to the upper mold 2, and then the mold opening mechanism can drive the upper mold 2 to open relative to the lower mold 1.

[0028] The working principle of the utility model is as follows: when in use, the power is turned on, first the lower mold 1 and the upper mold 2 are connected to each other with the external standard mold frame through the connecting plates 17 at both ends, and then the whole is installed inside the injection molding machine, so that the external mold opening mechanism is connected with the upper mold 2, and then the mold opening mechanism can drive the upper mold 2 to open relative to the lower mold 1;

[0029] The lower mold 1 and the upper mold 2 are closed to each other to form an injection cavity 3, and a central block 6 and a plurality of sets of inwardly contracted blocks 7 are arranged inside the injection cavity 3, and the plurality of sets of inwardly contracted blocks 7 and the central block 6 are slidably connected;

[0030] When the external injection molding machine performs injection molding on the injection molding cavity 3 and the lamp head is cooled and formed as a whole, the sliding plate 4 and the lifting plate 5 are first driven to open under the action of the two sets of pen cylinders 11;

[0031] When the sliding plate 4 moves, the central block 6 is driven to move at the same time. The central block 6 moves relative to the multiple sets of indentation blocks 7. The indentation blocks 7 move and contract radially themselves, thereby causing the threads on the outer sides of the multiple sets of indentation blocks 7 to detach from the threads formed by the injection molded product.

[0032] Due to the cooperation of the limiting guide block 8 and the limiting guide groove 9, when the center block 6 moves to the maximum position, the sliding plate 4 drives the multiple groups of shrinking blocks 7 to separate from the injection cavity 3 through the center block 6. At this time, under the action of the external mold opening mechanism, the upper mold 2 and the lower mold 1 are separated from each other, and then the molded lamp cap can be taken out;

[0033] As can be seen from the above, the use of an inward-retracted structure allows the lamp holder and the threads of its inner wall to be integrally injection-molded, which not only avoids the problem of requiring later assembly, but also improves the overall production and processing efficiency;

[0034] Furthermore, when the upper mold 2 is opened relative to the lower mold 1, the upper mold 2 simultaneously drives the lifting plate 5 to rise, wherein the bottom of the lifting plate 5 and the sliding plate 4 are slidingly connected via the telescopic plate 14, thereby not affecting the overall unfolding effect.

[0035] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. An integral injection mold for a lamp holder without an inner frame, comprising a lower mold (1) and an upper mold (2), characterized in that: An injection cavity (3) is formed inside the lower mold (1) and the upper mold (2), and a sliding plate (4) is movably connected to one side of the lower mold (1) and the upper mold (2); The top of the sliding plate (4) is slidably connected to a lifting plate (5); a center block (6) extending into the interior of the injection cavity (3) is fixed to the inner sides of the sliding plate (4) and the lifting plate (5); an inner shrinking block (7) is obliquely slidably connected to the outer sides of the center block (6); a limiting guide block (8) extending into the interior of the plurality of groups of inner shrinking blocks (7) is fixed to the outer sides of the center block (6); and a limiting guide groove (9) matching the limiting guide block (8) is provided in the interiors of the plurality of groups of inner shrinking blocks (7).

2. The one-piece injection mold for a lamp holder without an inner frame according to claim 1, characterized in that: Both ends of the lower mold (1) are installed with pen cylinders (11), and the output end of the pen cylinder (11) is fixedly connected to the inner side of the sliding plate (4).

3. The one-piece injection mold for a lamp holder without an inner frame according to claim 1, characterized in that: A telescopic plate (14) extending into the interior of the sliding plate (4) is fixed to the bottom of the lifting plate (5), and a telescopic groove matching the telescopic plate (14) is provided inside the sliding plate (4).

4. The one-piece injection mold for a lamp holder without an inner frame according to claim 1, characterized in that: Both ends of the inner sides of the sliding plate (4) and the lifting plate (5) are fixed with first guide rods (12) which extend into the interior of the lower mold (1) and the upper mold (2) respectively.

5. The one-piece injection mold for a lamp holder without an inner frame according to claim 1, characterized in that: A cooling water pipe (16) located outside the injection cavity (3) is fixed inside the lower mold (1) and the upper mold (2), and an injection pipe (15) connected to the injection cavity (3) is arranged at the center position inside the upper mold (2).

6. The one-piece injection mold for a lamp holder without an inner frame according to claim 1, characterized in that: Second guide rods (13) extending into the interior of the lower mold (1) are fixed at the four corners of the bottom of the upper mold (2), and guide holes matching the second guide rods (13) are provided inside the lower mold (1).

7. The one-piece injection mold for a lamp holder without an inner frame according to claim 1, characterized in that: A core pulling rod (10) is fixed at a central position on one side of the central block (6), and the core pulling rod (10) passes through the injection molding cavity (3).

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