Lamp shell injection mold convenient to demold

Abstract

The utility model provides a lamp shell injection mold convenient to demold, which comprises an injection molding box, a lower mold is arranged at the top of the injection molding box, an upper mold is arranged right above the lower mold, and the upper mold is in transmission connection with a pressing mechanism and is driven by the pressing mechanism to lift; a demolding plate is movably installed in the lower mold, second movable rods are fixedly installed on the two sides of the bottom of the demolding plate, and first springs are arranged on the second movable rods and are in sliding connection with second sliding grooves formed in the bottom of the lower mold; a through groove is formed in the circle center of the demolding plate, a demolding rod is slidably installed in the through groove, and the demolding rod is connected with the pressing mechanism through an elastic assembly. After injection molding solidification, the pressing mechanism drives the upper mold to rise and restore, at the moment, the elastic force of the first spring drives the demolding plate to push the formed lamp shell to demold the lamp shell from the lower mold, then the elastic force of the elastic assembly drives the demolding rod to restore, the lamp shell can be pushed to demold from the demolding plate, and the demolding effect is good by achieving complete demolding.

Description

Technical Field

[0001] This utility model mainly relates to the field of lamp housing production technology, specifically to an injection mold for lamp housing that is easy to demold. Background Technology

[0002] As an important component of lighting fixtures, the housing of a lamp not only needs to have an aesthetically pleasing appearance, but also needs to meet certain functional and durability requirements. Through injection molding, lamp housings of various shapes and precise dimensions can be manufactured. Injection molding is a commonly used plastic molding process. It involves injecting molten plastic into a mold, and after cooling, the desired plastic product is obtained. However, the mold often sticks to the material during demolding, making demolding difficult.

[0003] Application No. CN202221246595.5 discloses an injection mold for producing lamp housings. A sliding rod drives a horizontal plate, connecting rod, and push plate to move vertically, causing the push plate to fit tightly against the inner bottom of the lower mold. The upper housing moves vertically downwards, compressing a spring and damping rod to ensure a tight fit between the top of the upper and lower housings. Injection is performed through an injection tube into the cavity where the lower and upper molds fit together. The upper housing moves vertically upwards, causing the horizontal plate to move vertically upwards via the damping rod, spring, and sliding rod. This upward movement of the horizontal plate drives the connecting rod and push plate to move vertically upwards, thus lifting the molded workpiece and facilitating demolding.

[0004] In the aforementioned prior art, the spring-recovery elastic push rod is used to push the push plate to lift the formed workpiece. This can only demold the workpiece and the mold, but the contact area between the push plate and the workpiece is also relatively large, and the workpiece is easy to stick to it after forming, making it still inconvenient to remove the formed workpiece. Utility Model Content

[0005] 1. The technical problem to be solved by the utility model:

[0006] This invention provides an injection mold for lamp housing that facilitates demolding, thereby solving the technical problems existing in the background art.

[0007] 2. Technical Solution:

[0008] To achieve the above objectives, the technical solution provided by this utility model is as follows: a lamp housing injection mold that is easy to demold, including an injection box, a lower mold provided on the top of the injection box, an upper mold provided directly above the lower mold, and a pressing mechanism connected to the upper mold and driven to rise and fall by the pressing mechanism;

[0009] A stripping template is movably installed inside the lower mold. A second movable rod is fixedly installed on both sides of the bottom of the stripping template. A first spring is provided on the second movable rod, and it is slidably connected to a second sliding groove opened at the bottom of the lower mold.

[0010] A through groove is provided at the center of the demolding template, and a demolding rod is slidably installed in the through groove. The demolding rod is connected to the pressing mechanism through an elastic component.

[0011] Furthermore, the pressing mechanism includes a support rod and a top plate. The top plate is fixedly connected to the top of the injection molding box through several support rods. A telescopic cylinder is mounted on the top of the top plate. A lifting plate is fixedly installed at the telescopic end of the telescopic cylinder. The bottom of the lifting plate is fixedly connected to the upper mold. First movable rods are provided on both sides of the top. The first movable rods are slidably connected to the third sliding groove opened on the top plate.

[0012] Furthermore, the elastic component includes two third movable rods, which are slidably connected to the first slide groove on the injection molding box. One end of each third movable rod is symmetrically fixedly installed at the bottom of the lifting plate, and the other end is provided with a fourth slide groove. A fourth movable rod is slidably installed in the fourth slide groove. A second spring is provided between one end of the fourth movable rod and the inner wall of the end of the fourth slide groove, and the other end is fixedly installed on a connecting plate. The connecting plate is fixedly connected to the bottom of the demolding rod.

[0013] Furthermore, an injection tube is connected to the top of the upper mold, and the injection tube passes through the lifting plate.

[0014] Furthermore, a spirally extending cooling groove is provided inside the lower mold, and the cooling groove is connected to the liquid inlet pipe and liquid outlet pipe provided on the side wall of the lower mold.

[0015] 3. Beneficial effects:

[0016] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: After the injection molding solidifies, the pressing mechanism drives the upper mold to rise and return to its original state. At this time, the elastic force of the first spring will drive the demolding template to push the molded lamp housing, so that it is demolded from the lower mold. Then, the elastic force of the elastic component will drive the demolding rod to return to its original state, so that the lamp housing is pushed to demold from the demolding template. By achieving complete demolding, the demolding effect is good. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0019] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0020] Figure label:

[0021] 1. Injection box; 101. First slide groove; 2. Lower mold; 201. Second slide groove; 202. Cooling tank; 3. Upper mold; 4. Pressing mechanism; 41. Support rod; 42. Top plate; 4201. Third slide groove; 43. Telescopic cylinder; 44. Lifting plate; 45. First movable rod; 5. Demolding plate; 501. Through groove; 6. Second movable rod; 7. First spring; 8. Demolding rod; 9. Elastic component; 91. Third movable rod; 9101. Fourth slide groove; 92. Fourth movable rod; 93. Second spring; 94. Connecting plate; 10. Injection tube; 11. Liquid inlet pipe; 12. Liquid outlet pipe. Detailed Implementation

[0022] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "equipped with" 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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. Example

[0026] See attached document Figure 1-3 An easy-to-demold lamp housing injection mold includes an injection box 1, a lower mold 2 is provided on the top of the injection box 1, an upper mold 3 is provided directly above the lower mold 2, and the upper mold 3 is driven to be connected to a pressing mechanism 4 and is driven to rise and fall by the pressing mechanism 4.

[0027] A stripping template 5 is movably installed inside the lower mold 2. A second movable rod 6 is fixedly installed on both sides of the bottom of the stripping template 5. A first spring 7 is provided on the second movable rod 6 and is slidably connected to the second sliding groove 201 opened at the bottom of the lower mold 2.

[0028] A through groove 501 is provided at the center of the demolding template 5, and a demolding rod 8 is slidably installed in the through groove 501. The demolding rod 8 is connected to the pressing mechanism 4 through an elastic component 9.

[0029] In this embodiment, the upper mold 3 is first driven down by the pressing mechanism 4, and the elastic component 9 is driven down simultaneously, so that the demolding rod 8 slides in the through groove 501 until the top of the demolding rod 8 coincides with the top of the demolding template 5. Then, the upper mold 3 enters the lower mold 2 and pushes the demolding template 5 down to slide. The second movable rod 6 slides down simultaneously and squeezes the first spring 7. Then, injection molding is performed between the lower mold 2 and the upper mold 3. After solidification, the pressing mechanism 4 drives the upper mold 3 to rise and return to its original position. At this time, the elastic force of the first spring 7 will drive the demolding template 5 to push the molded lamp housing, so that it is demolded from the lower mold 2. Then, the elastic force of the elastic component 9 will drive the demolding rod 8 to return to its original position, so that the lamp housing is pushed to remove it from the demolding template 5. By achieving complete demolding, the demolding effect is good.

[0030] The pressing mechanism 4 includes a support rod 41 and a top plate 42. The top plate 42 is fixedly connected to the top of the injection molding box 1 through several support rods 41. A telescopic cylinder 43 is mounted on the top of the top plate 42. A lifting plate 44 is fixedly installed at the telescopic end of the telescopic cylinder 43. The bottom of the lifting plate 44 is fixedly connected to the upper mold 3. A first movable rod 45 is provided on both sides of the top. The first movable rod 45 is slidably connected to the third sliding groove 4201 opened on the top plate 42.

[0031] In this embodiment, after the telescopic cylinder 43 is activated, it can drive the lifting plate 44 to rise and fall. The upper mold 3 is fixedly connected to it and maintains synchronous rise and fall. Furthermore, it is slidably connected to the third slide groove 4201 through the first movable rod 45, which can make the lifting process more stable.

[0032] The elastic component 9 includes two third movable rods 91, which are slidably connected to the first slide groove 101 on the injection molding box 1. One end of each third movable rod 91 is symmetrically fixedly installed at the bottom of the lifting plate 44, and the other end is provided with a fourth slide groove 9101. A fourth movable rod 92 is slidably installed in the fourth slide groove 9101. A second spring 93 is provided between one end of the fourth movable rod 92 and the inner wall of the end of the fourth slide groove 9101, and the other end is fixedly installed on the connecting plate 94. The connecting plate 94 is fixedly connected to the bottom of the demolding rod 8.

[0033] In this embodiment, when the lifting plate 44 descends, the third movable rod 91 slides synchronously in the first slide groove 101, and the fourth movable rod 92 and the connecting plate 94 also move downward synchronously, so that the demolding rod 8 can slide in the through groove 501 until it coincides with the top of the demolding plate 5. When the connecting plate 94 abuts against the bottom of the injection box 1, the lifting plate 44 continues to descend so that the upper mold 3 pushes the demolding plate 5. The fourth movable rod 92 squeezes the second spring 93 and slides in the fourth slide groove 9101. The demolding rod 8 remains stationary. When the lifting plate 44 rises and falls so that the top of the demolding plate 5 and the lamp housing are demolded from the lower mold 2, the second spring 93 returns to its original state and drives the demolding rod 8 to push the lamp housing to demold it from the demolding plate 5.

[0034] The top of the upper mold 3 is connected to an injection tube 10, which passes through the lifting plate 44 to facilitate injection feeding.

[0035] The lower mold 2 has a spirally extending cooling groove 202 inside, and the cooling groove 202 is connected to the liquid inlet pipe 11 and liquid outlet pipe 12 provided on the side wall of the lower mold 2.

[0036] In this embodiment, after the inlet pipe 11 and outlet pipe 12 are connected to the cooling system, the coolant will circulate from the inlet pipe 11 into the cooling tank 202 and then be discharged from the outlet pipe 12, which is used to accelerate the cooling and solidification of injection molding. The spiral extension of the cooling tank 202 can increase the contact area and improve the cooling effect.

[0037] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

[0038] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art.

Claims

1. A lamp housing injection mold for easy demolding, characterized in that: It includes an injection molding box (1), a lower mold (2) is provided on the top of the injection molding box (1), an upper mold (3) is provided directly above the lower mold (2), and the upper mold (3) is connected to a pressing mechanism (4) and is driven to rise and fall by the pressing mechanism (4); A stripping template (5) is movably installed inside the lower mold (2). A second movable rod (6) is fixedly installed on both sides of the bottom of the stripping template (5). A first spring (7) is provided on the second movable rod (6) and is slidably connected to the second slide groove (201) opened at the bottom of the lower mold (2). A through groove (501) is provided at the center of the demolding template (5), and a demolding rod (8) is slidably installed in the through groove (501). The demolding rod (8) is connected to the pressing mechanism (4) through an elastic component (9).

2. The injection mold for a lamp housing that is easy to demold according to claim 1, characterized in that: The pressing mechanism (4) includes a support rod (41) and a top plate (42). The top plate (42) is fixedly connected to the top of the injection box (1) through several support rods (41). A telescopic cylinder (43) is mounted on the top of the top plate (42). A lifting plate (44) is fixedly installed at the telescopic end of the telescopic cylinder (43). The bottom of the lifting plate (44) is fixedly connected to the upper mold (3). A first movable rod (45) is provided on both sides of the top. The first movable rod (45) is slidably connected to the third sliding groove (4201) opened on the top plate (42).

3. The injection mold for a lamp housing that is easy to demold according to claim 2, characterized in that: The elastic component (9) includes a third movable rod (91), there are two third movable rods (91), and they are slidably connected to the first slide groove (101) opened on the injection box (1). One end of the third movable rod (91) is symmetrically fixedly installed at the bottom of the lifting plate (44), and the other end is provided with a fourth slide groove (9101). A fourth movable rod (92) is slidably installed in the fourth slide groove (9101). A second spring (93) is provided between one end of the fourth movable rod (92) and the inner wall of the end of the fourth slide groove (9101), and the other end is fixedly installed on the connecting plate (94). The connecting plate (94) is fixedly connected to the bottom of the demolding rod (8).

4. The injection mold for a lamp housing that is easy to demold according to claim 2, characterized in that: The top of the upper mold (3) is connected to an injection tube (10), which passes through the lifting plate (44).

5. The injection mold for a lamp housing that is easy to demold according to claim 1, characterized in that: The lower mold (2) has a spirally extending cooling groove (202) inside, and the cooling groove (202) is connected to the liquid inlet pipe (11) and liquid outlet pipe (12) provided on the side wall of the lower mold (2).

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