Injection mold for producing automobile ceiling lamp

Abstract

The utility model relates to the field of injection molds, and discloses an injection mold for producing an automobile ceiling lamp, which comprises a lower mold, a material ejection device is arranged in the lower mold, a sliding rod is fixedly connected to the upper surface of the lower mold, and an upper mold is slidably connected to the outer arc surface of the sliding rod. An injection molding head is fixedly connected to the center of the inner surface of the upper mold, a vacuum device is arranged in the upper mold, the material ejection device comprises a rotating shaft, and an ejection plate is fixedly connected to the outer arc surface of the rotating shaft. Through the arrangement of the supporting plate, the limiting block, the sliding block, the rotating shaft, the trigger block and the top plate, after injection molding, the supporting plate can be driven to move upwards through rotation of the rotating shaft to eject the upper end of a plastic product, so that the plastic automobile dome lamp is conveniently taken out from the lower mold, the problem that the plastic automobile dome lamp is damaged by clamping in the material taking process is effectively avoided, and the production efficiency is improved. And the yield of the plastic automobile ceiling lamp is improved.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, in particular to an injection mold for producing automobile ceiling lamps. Background Art

[0002] An injection mold is a tool used to manufacture plastic products. It consists of several parts, including a mold base, a mold core, and a mold cavity. Injection molds are usually made of metal, including steel and aluminum, and the molds made generally have high strength and wear resistance.

[0003] In the prior art, the working principle of the injection mold is to inject heated and molten plastic into the mold, and then fill the entire mold cavity with plastic through pressure to finally form a plastic product of the desired shape. After the plastic cools and solidifies, the mold can be opened and the finished product can be taken out of the mold.

[0004] However, in actual use, since the plastic products inside the mold are all located in the special-shaped groove inside the mold after cooling and forming, the robot often needs to reach into the inside of the mold groove to take out the plastic products during the material removal process, which poses a risk of pinching the plastic products. At the same time, since the plastic products are tightly attached to the mold after cooling, the overall removal process of the plastic products is relatively cumbersome and inconvenient. Therefore, an injection mold for the production of automobile ceiling lights is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an injection mold for producing automobile ceiling lights, aiming to improve the problem in the prior art that it is inconvenient to take out the plastic products after cooling and molding.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: comprising a lower mold, a material ejection device is arranged inside the lower mold, a slide rod is fixedly connected to the upper surface of the lower mold, an upper mold is slidably connected to the outer arc surface of the slide rod, an injection head is fixedly connected to the center of the inner surface of the upper mold, and a vacuum device is arranged inside the upper mold;

[0007] The material ejection device includes a rotating shaft, a top plate is fixedly connected to the outer arc surface of the rotating shaft, a trigger block is fixedly connected to the lower end of the outer arc surface of the rotating shaft, a support plate is connected to the piston at the inner wall of the lower mold, a sliding block is slidably connected to the lower end of the inner surface of the lower mold, and a limiting block is fixedly connected to the lower end of the inner surface of the lower mold.

[0008] As a further description of the above technical solution:

[0009] The vacuum device comprises a vacuum generator, a connecting pipe is fixedly connected to the air inlet of the vacuum generator, an end of the connecting pipe away from the vacuum generator is fixedly connected to an air bin, and an air inlet is fixedly connected to the inner curved surface of the air bin.

[0010] As a further description of the above technical solution:

[0011] A mold groove is provided on the upper surface of the lower mold, a through slide groove is provided on both the left and right sides of the lower mold, and a rectangular groove is provided at the lower end of the inner surface of the lower mold.

[0012] As a further description of the above technical solution:

[0013] The four corners of the upper mold are all provided with through holes, the center of the inner surface of the upper mold is provided with a through hole, and the center of the inner surface of the rotating shaft is provided with a through hole.

[0014] As a further description of the above technical solution:

[0015] The inner surface of the rotating shaft is elastically connected to the lower mold through a spiral spring, the upper surface of the top plate is in contact with the support plate, and rectangular limiting protrusions are provided at both upper and lower ends of the sliding block.

[0016] As a further description of the above technical solution:

[0017] A circular groove is provided at the center of the inner surface of the upper mold, and a plurality of groups of cylindrical grooves are provided at the center of the inner surface of the upper mold.

[0018] As a further description of the above technical solution:

[0019] The inner surface of the upper mold is fixedly connected to the vacuum generator, and the connecting pipe is connected to the vacuum generator and the air chamber at the same time.

[0020] As a further description of the above technical solution:

[0021] The air inlets are provided in a plurality of groups, and the air inlets are distributed in an array around a circle with the center of the mold being the center of the array.

[0022] The utility model has the following beneficial effects:

[0023] 1. The utility model provides a support plate, a limit block, a slider, a rotating shaft, a trigger block and a top plate. After injection molding, the support plate can be driven to move upward by the rotation of the rotating shaft to eject the upper end of the plastic product, thereby facilitating the removal of the plastic car dome light from the lower mold, effectively avoiding the problem of pinching the plastic car dome light during the material removal process, and improving the yield rate of the plastic car dome light.

[0024] 2. The vacuum generator, air chamber, connecting pipe and air inlet provided in the utility model can form a negative pressure environment in the space between the upper mold and the lower mold before injection molding through the vacuum generator, thereby avoiding a large number of bubbles in the plastic material during the injection molding process of the injection molding head and solidifying inside the manufactured car dome light, thereby improving the quality of the supported car dome light. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional schematic diagram of an injection mold for producing a car ceiling light proposed by the utility model;

[0026] Figure 2 This is a schematic diagram of the cross-section of the lower mold of an injection mold for producing a car ceiling light proposed by the utility model;

[0027] Figure 3 This is a schematic diagram of the rotating shaft of an injection mold for producing a car ceiling light proposed by the utility model;

[0028] Figure 4 The utility model is a schematic diagram of the cross section of an upper mold of an injection mold for producing a car ceiling light.

[0029] Legend:

[0030] 1. Lower mold; 2. Material ejection device; 3. Vacuum device; 4. Slide rod; 5. Upper mold; 6. Injection head; 201. Support plate; 202. Limit block; 203. Slider; 204. Rotating shaft; 205. Trigger block; 206. Top plate; 301. Air inlet; 302. Vacuum generator; 303. Connecting pipe; 304. Air chamber. DETAILED DESCRIPTION

[0031] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1-Figure 3 The utility model provides an embodiment: comprising a lower mold 1, a material ejection device 2 is arranged inside the lower mold 1, a slide bar 4 is fixedly connected to the upper surface of the lower mold 1, an upper mold 5 is slidably connected to the outer arc surface of the slide bar 4, an injection head 6 is fixedly connected to the center of the inner surface of the upper mold 5, and a vacuum device 3 is arranged inside the upper mold 5;

[0033] The material ejection device 2 includes a rotating shaft 204, a top plate 206 is fixedly connected to the outer arc surface of the rotating shaft 204, a trigger block 205 is fixedly connected to the lower end of the outer arc surface of the rotating shaft 204, a support plate 201 is connected to the piston at the inner wall of the lower mold 1, a slider 203 is slidably connected to the lower end of the inner surface of the lower mold 1, and a limiting block 202 is fixedly connected to the lower end of the inner surface of the lower mold 1, and the limiting block 202 can limit the lowest position of the top plate 206.

[0034] A mold groove is provided on the upper surface of the lower mold 1. According to actual needs, the shape of the mold groove inside the lower mold 1 can be adjusted to accommodate various types of automobile ceiling lamp molding. A through slide groove is provided on both the left and right sides of the lower mold 1. A rectangular groove is provided at the lower end of the inner surface of the lower mold 1, so that the rotation shaft 204, the trigger block 205 and the top plate 206 can be accommodated to move inside it. Through holes are provided at the four corners of the upper mold 5, so that it can be slidably connected with the slide rod 4 through a linear bearing. A through hole is provided at the center of the inner surface of the upper mold 5, so that the injection head 6 can be accommodated. Located inside it, a through hole is opened at the center of the inner surface of the rotating shaft 204, so that it can be rotatably connected with the cylindrical protrusion inside the lower mold 1. The inner surface of the rotating shaft 204 is elastically connected to the lower mold 1 through a spiral spring. Therefore, after the formed automobile ceiling light is ejected, the slider 203 can be loosened and the spiral spring can drive the material ejection device 2 to reset as a whole through its own elastic force. The upper surface of the top plate 206 is in contact with the support plate 201. Rectangular limiting protrusions are provided at the upper and lower ends of the slider 203, so that its movement range can be limited and it cannot escape from the lower mold 1.

[0035] Reference Figure 1 as well as Figure 4 The vacuum device 3 includes a vacuum generator 302, a connecting pipe 303 is fixedly connected to the air inlet of the vacuum generator 302, an end of the connecting pipe 303 away from the vacuum generator 302 is fixedly connected to an air bin 304, and an air inlet 301 is fixedly connected to the inner arc surface of the air bin 304.

[0036] A circular groove is provided at the center of the inner surface of the upper mold 5, so that the air chamber 304 can be accommodated therein. Multiple groups of cylindrical grooves are provided at the center of the inner surface of the upper mold 5, so that the air inlet 301 can be accommodated therein. The inner surface of the upper mold 5 is fixedly connected to the vacuum generator 302, and the connecting pipe 303 is connected to the vacuum generator 302 and the air chamber 304 at the same time. Multiple groups of air inlets 301 are arranged, and the multiple groups of air inlets 301 are distributed in a circular array with the center of the upper mold 5 as the array center.

[0037] Working principle: When the device is in use, the upper mold 5 needs to be driven by an external driving device to move downward as a whole and fully cover the lower mold 1. At this time, plastic can be injected into the lower mold 1 through the injection head 6. After the material inside the lower mold 1 is fully cooled, the sliders 203 on both sides can be squeezed by the material-taking robot at the same time to squeeze the trigger block 205. At this time, the trigger block 205 will synchronously drive the rotating shaft 204 and the top plate 206 to rotate synchronously as a whole. At this time, the support plate 201 will rise due to the push of the top plate 206 below, and the upper end of the plastic product cooled and formed at the upper end will be exposed, so as to facilitate the material-taking robot to take the material.

[0038] At the same time, when the upper mold 5 and the lower mold 1 of the device are fitted together, the vacuum generator 302 needs to be started synchronously so that the air inside the air bin 304 can be drawn out through the connecting pipe 303. At the same time, due to the influence of the vacuum negative pressure, the air inlet 301 will synchronously draw out the air in the central space of the upper mold 5 and the lower mold 1, thereby keeping the inner sides of the upper mold 5 and the lower mold 1 in a relative vacuum state, thereby avoiding the influence of a large number of bubbles inside the material on its molding quality during the injection process.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An injection mold for producing a car ceiling lamp, comprising a lower mold (1), characterized in that: A material ejection device (2) is provided inside the lower mold (1); a slide bar (4) is fixedly connected to the upper surface of the lower mold (1); an upper mold (5) is slidably connected to the outer arc surface of the slide bar (4); an injection head (6) is fixedly connected to the center of the inner surface of the upper mold (5); and a vacuum device (3) is provided inside the upper mold (5); The material ejection device (2) comprises a rotating shaft (204), a top plate (206) is fixedly connected to the outer arc surface of the rotating shaft (204), a trigger block (205) is fixedly connected to the lower end of the outer arc surface of the rotating shaft (204), a support plate (201) is connected to the piston at the inner wall of the lower mold (1), a slider (203) is slidably connected to the lower end of the inner surface of the lower mold (1), and a limit block (202) is fixedly connected to the lower end of the inner surface of the lower mold (1).

2. The injection mold for producing a car ceiling light according to claim 1, characterized in that: The vacuum device (3) comprises a vacuum generator (302), a connecting pipe (303) is fixedly connected to the air inlet of the vacuum generator (302), an end of the connecting pipe (303) away from the vacuum generator (302) is fixedly connected to an air bin (304), and an air inlet (301) is fixedly connected to the inner arc surface of the air bin (304).

3. The injection mold for producing a car ceiling light according to claim 1, characterized in that: A mold groove is provided on the upper surface of the lower mold (1), a through slide groove is provided on both the left and right sides of the lower mold (1), and a rectangular groove is provided at the lower end of the inner surface of the lower mold (1).

4. The injection mold for producing a car ceiling light according to claim 1, characterized in that: The upper mold (5) has four corners with through holes, the inner surface of the upper mold (5) has a through hole at the center, and the inner surface of the rotating shaft (204) has a through hole at the center.

5. The injection mold for producing a car ceiling light according to claim 1, characterized in that: The inner surface of the rotating shaft (204) is elastically connected to the lower mold (1) via a spiral spring, the upper surface of the top plate (206) is in contact with the support plate (201), and rectangular limiting protrusions are provided at both upper and lower ends of the sliding block (203).

6. The injection mold for producing a car ceiling light according to claim 2, characterized in that: A circular groove is provided at the center of the inner surface of the upper mold (5), and a plurality of groups of cylindrical grooves are provided at the center of the inner surface of the upper mold (5).

7. The injection mold for producing a car ceiling light according to claim 2, characterized in that: The inner surface of the upper mold (5) is fixedly connected to the vacuum generator (302), and the connecting pipe (303) is connected to the vacuum generator (302) and the air chamber (304) at the same time.

8. The injection mold for producing a car ceiling light according to claim 2, characterized in that: The air inlets (301) are provided in a plurality of groups, and the plurality of air inlets (301) are distributed in an array around a circle with the center of the mold (5) being the center of the array.

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