Improved television shell mold

Abstract

The utility model relates to the technical field of television part processing, and discloses an improved television shell mold, which comprises a movable mold and a fixed mold, the fixed mold is provided with a cavity, the movable mold is provided with a mold core, the movable mold is provided with a sprue gate, the mold core is provided with a main pouring channel communicated with the sprue gate, and the main pouring channel is communicated with the sprue gate. The sprue gate is located on the upper middle portion of the movable mold, one end of the main pouring channel is connected with a connecting channel, a plurality of auxiliary pouring channels are arranged on the side, facing the mold cavity, of the connecting channel, the multiple pouring channels communicate with the mold cavity, and a plurality of demolding assemblies are installed in the mold cavity. The improved television shell mold solves the problems that an existing television is large and thin, liquid plastic is easy to cure and mold in advance in a cavity or even a runner due to too long circulation time in the injection molding process, the injection molding process is influenced, the liquid plastic is not easy to flow to other parts, and the cost is low. And a large-size television shell is inconvenient to demould.

Description

Technical Field

[0001] The utility model relates to the technical field of television part processing, and specifically relates to an improved television shell mold. Background Technique

[0002] A television refers to a device that transmits moving image pictures and audio signals using electronic technology based on the visual persistence characteristic and visual psychology of the human eye, that is, a television receiver. It is also an important broadcasting and video communication tool. The basic system of a television consists of three parts: camera, transmission, and imaging.

[0003] The television shell is an important component. The Chinese patent discloses (authorization announcement number CN218660110U) an improved television shell mold, which relates to the field of molds. The utility model includes a fixed mold and a movable mold. A first spring telescopic rod is fixed between the fixed mold and the movable mold. A hydraulic cylinder is installed at the bottom of the fixed mold, and the output end of the hydraulic cylinder is connected to a guide frame. The four corners of the top of the movable mold are connected to a push plate through a second spring telescopic rod, and the four corners of the bottom of the push plate are connected to a rubber cushion plate through a push rod penetrating the second spring telescopic rod. By setting a cooling component, after the fixed mold and the movable mold are closed, the male joint and the female joint groove are engaged with each other, which will make the lower cooling cavity and the upper cooling cavity communicate with each other. Then, during the material forming process, cooling water can be input into the lower cooling cavity and the upper cooling cavity through a water delivery pipe to cool the material, and the cooling is more comprehensive, making the cooling faster, avoiding the situation where the cooling efficiency is relatively slow due to the incomplete cooling surface. This patented technology can cool the television shell mold. However, due to the fact that existing televisions are getting larger and thinner, the size of the television shell is also getting larger. In this case, during the injection molding process, it is necessary to consider the flow time of the liquid plastic. If the flow time is too long, this part of the liquid plastic will easily solidify and form in advance inside the cavity or even the runner, which will affect the injection molding process. The liquid plastic is not easy to flow to other parts, and it is also not convenient to demold the large-sized television shell.

[0004] Therefore, those skilled in the art have provided an improved television shell mold to solve the problems raised in the above background technique. Content of the Utility Model

[0005] The purpose of the utility model is to provide an improved television shell mold to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] An improved TV shell mold comprises a movable mold and a fixed mold, wherein the fixed mold is provided with a mold cavity, the movable mold is provided with a mold core, the movable mold is provided with a pouring port, the core is provided with a main pouring channel connected with the pouring port, the pouring port is located in the middle and upper part of the movable mold, one end of the main pouring channel is connected with a connecting channel, a side of the connecting channel facing the mold cavity is provided with a plurality of auxiliary pouring channels, the plurality of pouring channels are connected with the mold cavity, and a plurality of demoulding components are installed inside the mold cavity.

[0008] As a further solution of the utility model: the demolding assembly includes a spring-opening groove opened on the mold cavity, the interior of the spring-opening groove is slidably connected with a push rod, the end of the push rod is provided with a pushing portion, the diameter of the pushing portion is larger than the push rod, one end of the spring-opening groove is provided with a accommodating groove for accommodating the pushing portion, and a spring is provided inside the spring-opening groove.

[0009] As a further solution of the utility model: a convex ring is provided on one side of the accommodating groove, and an annular groove is provided on the side of the pushing portion facing the elastic opening groove.

[0010] As a further solution of the utility model: a guide groove is provided on one side of the elastic slot, and a guide block is installed on one side of the push rod.

[0011] As a further solution of the utility model: a movable frame is installed on one side of the fixed mold, a plurality of connecting rods are installed on the movable frame, the connecting rods are in contact with the ejector rods, and a propping assembly is provided between the movable frame and the fixed mold.

[0012] As a further solution of the utility model: the expansion assembly includes a positioning frame installed on one side of the fixed mold, a cam is installed inside the positioning frame, and a toggle plate is connected to one side of the cam.

[0013] As a further solution of the utility model: a positioning block is installed on one side of the movable frame, and an arc groove matching with the cam is opened on one side of the positioning block.

[0014] As a further solution of the utility model: a telescopic rod is hinged on the fixed mold, a long groove is opened at one end of the toggle plate, a slider is slidably connected to the long groove, and one end of the telescopic rod is hinged to the slider.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model can pour at different positions of the cavity by providing a connecting channel and an auxiliary pouring channel connected to the main pouring channel, which can prevent the liquid plastic from flowing in the cavity for too long and prevent some of the liquid plastic from solidifying prematurely, and at the same time can speed up the pouring speed.

[0017] 2. The utility model provides a movable frame, which is connected to a plurality of connecting rods, which are in contact with ejector rods. The ejector rods can automatically demold during the demolding process. When the TV casing cannot be demolded after molding, the movable frame can be moved to enable the TV casing to be demolded more stably, thereby preventing the injection molded parts from remaining inside the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an improved TV housing mold;

[0019] Figure 2 The figure is a left side cross-sectional view of an improved TV housing mold;

[0020] Figure 3 An improved TV housing mold Figure 2 The enlarged view of point A in the middle;

[0021] Figure 4 An improved TV housing mold Figure 3 Enlarged view of point C in the middle.

[0022] Figure 5 An improved TV housing mold Figure 2 Enlarged view of point B in the middle.

[0023] In the figure: 1, movable mold; 2, fixed mold; 3, cavity; 4, core; 5, pouring gate; 6, main pouring channel; 7, connecting channel; 8, auxiliary pouring channel; 9, spring-opening groove; 10, ejector rod; 11, push-opening part; 12, accommodating groove; 13, spring; 14, convex ring; 15, annular groove; 16, guide groove; 17, guide block; 18, movable frame; 19, connecting rod; 20, positioning frame; 21, cam; 22, toggle plate; 23, positioning block; 24, arc groove; 25, telescopic rod; 26, long groove; 27, slider. DETAILED DESCRIPTION

[0024] See also Figures 1-5 An improved TV shell mold includes a movable mold 1 and a fixed mold 2, the fixed mold 2 is provided with a cavity 3, the movable mold 1 is provided with a core 4, the movable mold 1 is provided with a pouring gate 5, the core 4 is provided with a main pouring channel 6 connected with the pouring gate 5, the pouring gate 5 is located in the middle and upper part of the movable mold 1, one end of the main pouring channel 6 is connected with a connecting channel 7, the connecting channel 7 is provided with a plurality of auxiliary pouring channels 8 on the side facing the cavity 3, the plurality of pouring channels are connected with the cavity 3, and a plurality of demolding components are installed inside the cavity 3.

[0025] The utility model is provided with a moving die 1 and a fixed die 2. The cavity 3 is located on the fixed die 2, the core 4 is located on the moving die 1, the pouring gate 5 is located in the upper middle part of the moving die 1, the main pouring channel 6 is communicated with the pouring gate 5, the connecting channel 7 is communicated with the main pouring channel 6, the secondary pouring channel 8 is communicated with the connecting channel 7, and the secondary pouring channel 8 can enable the liquid plastic to enter the cavity 3. The number and arrangement mode of the secondary pouring channels 8 can be determined according to the required TV shell to be poured. Such a setting can more quickly put and convey the liquid plastic into the cavity 3, avoid the problem that the liquid plastic flows in the cavity 3 for too long due to the too large size of the TV shell, and avoid the problem that the liquid plastic entering different positions of the cavity 3 is locally pre-shaped due to different cooling times.

[0026] Specifically, the demolding assembly includes an elastic groove 9 opened on the cavity 3. A ejector rod 10 is slidably connected inside the elastic groove 9. A pushing part 11 is provided at the end of the ejector rod 10. The diameter of the pushing part 11 is larger than that of the ejector rod 10. A receiving groove 12 for receiving the pushing part 11 is provided at one end of the elastic groove 9. A spring 13 is provided inside the elastic groove 9.

[0027] Through the above technical solution, the elastic groove 9 is opened inside the cavity 3, the ejector rod 10 is slidably connected inside the elastic groove 9, the elastic groove 9 is arranged on the side facing the core 4, the pushing part 11 is located at the end of the ejector rod 10, the receiving groove 12 is opened at one end of the elastic groove 9, the spring 13 is located inside the elastic groove 9, and the elastic groove 9 can push the ejector rod 10 to move. During the pouring process, the ejector rod 10 retracts into the elastic groove 9 due to the larger stress surface of the pushing part 11. After the pouring is completed, the spring 13 will reset and can push the formed TV shell to separate from the cavity 3, facilitating demolding.

[0028] Specifically, a convex ring 14 is provided on one side of the receiving groove 12. An annular groove 15 is opened on the side of the pushing part 11 facing the elastic groove 9.

[0029] Through the above technical solution, the convex ring 14 is located on one side of the receiving groove 12, the annular groove 15 is opened on the pushing part 11, the pushing part 11 is inserted into the convex ring 14, and the convex ring 14 and the annular groove 15 can increase the contact area and can prevent the liquid plastic from entering the elastic groove 9.

[0030] Specifically, a guide groove 16 is opened on one side of the elastic groove 9. A guide block 17 is installed on one side of the ejector rod 10.

[0031] Through the above technical solution, the guide groove 16 is opened on one side of the circumferential surface of the elastic groove 9, the guide block 17 can slide inside the guide groove 16, can guide the movement of the ejector rod 10 and the pushing part 11, and can prevent the ejector rod 10 and the pushing part 11 from separating from the elastic groove 9.

[0032] Specifically, a moving frame 18 is installed on one side of the fixed mold 2 , a plurality of connecting rods 19 are installed on the moving frame 18 , the connecting rods 19 are in contact with the ejector rods 10 , and a spreading assembly is provided between the moving frame 18 and the fixed mold 2 .

[0033] Through the above technical solution, the movable frame 18 is located on one side of the fixed mold 2, the connecting rod 19 is fixedly connected to the positioning frame 20, and the multiple connecting rods 19 are respectively slidably connected to the spring-opening grooves 9, which can facilitate demoulding.

[0034] Specifically, the expansion assembly includes a positioning frame 20 installed on one side of the fixed mold 2 , a cam 21 is installed inside the positioning frame 20 , and a toggle plate 22 is connected to one side of the cam 21 .

[0035] Through the above technical solution, the positioning frame 20 is fixedly installed on one side of the fixed mold 2, the cam 21 is rotatably connected to the positioning frame 20, and the toggle plate 22 is located on the cam 21. The cam 21 is rotated by the toggle plate 22 to push the movable frame 18 on one side of the positioning frame 20 to extend and retract. The extension and retraction of the movable frame 18 can drive the ejector rod 10 to move, which is convenient for demolding.

[0036] Specifically, a positioning block 23 is installed on one side of the moving frame 18 , and an arc groove 24 matching with the cam 21 is formed on one side of the positioning block 23 .

[0037] Through the above technical solution, the positioning block 23 is fixedly connected to one side of the moving frame 18, and the arc groove 24 is opened on one side of the positioning block 23. The rotation of the cam 21 can drive the moving frame 18 to extend and retract through the arc groove 24, thereby avoiding wear of the moving frame 18.

[0038] Specifically, a telescopic rod 25 is hinged on the fixed mold 2 , a long slot 26 is formed at one end of the toggle plate 22 , a slider 27 is slidably connected to the long slot 26 , and one telescopic end of the telescopic rod 25 is hinged to the slider 27 .

[0039] Through the above technical solution, the telescopic rod 25 is hinged on the fixed mold 2, the long groove 26 is opened on the toggle plate 22, the slider 27 is slidably connected to the long groove 26, one end of the telescopic rod 25 is connected to the slider 27, and the telescopic rod 25 can be purchased directly from the market. The telescopic rod 25 can be extended and retracted by driving the cam 21 to rotate through the toggle rod, and the rotation of the cam 21 drives the movable frame 18 to move, which is convenient for demolding the TV shell.

[0040] The working principle of the utility model is: first, the movable mold 1 is moved to the side of the fixed mold 2. When the movable mold 1 and the fixed mold 2 are completely fitted together, liquid plastic is introduced into the cavity 3 through the pouring port 5. During this process, the liquid plastic on the pouring port 5 enters the main pouring channel 6 due to pressure, and the liquid plastic on the main pouring channel 6 enters the connecting channel 7 and is transported to multiple auxiliary pouring channels 8 through the connecting channel 7. The liquid plastic enters the cavity 3 through multiple auxiliary pouring channels 8. During this process, the flow time difference of the liquid plastic in the movable mold 1 is relatively low, so as to avoid the problem of positioning caused by the flow time of part of the liquid plastic in the movable mold 1 being too long, and to avoid the resistance to the subsequent circulation of the liquid plastic. During the pouring process, as the pressure inside the cavity 3 increases, the liquid plastic will push the push-open portion 11 and the ejector rod 1 0 applies pressure to retract the ejector pin 10 into the accommodating groove 12. At this time, the spring 13 inside the accommodating groove 12 contracts. After the pouring is completed, the liquid plastic inside the cavity 3 is cooled and formed into a TV housing. After the molding, the movable mold 1 is separated from the fixed mold 2. At this time, the contracted spring 13 is greatly reduced by the pressure of the cavity 3. The spring 13 will stretch and push the ejector pin 10 and the push-opening portion 11 to separate the formed TV housing from the inside of the cavity 3. When it cannot be separated, the telescopic rod 25 is extended to drive the toggle rod to rotate. The rotation of the toggle rod can drive the cam 21 to rotate on the arc groove 24, and the ejector pin 10 can be pushed to continue to move outward through the movable frame 18 and the connecting rod 19 thereon, so as to avoid the problem that the formed TV housing is adhered to the inside of the cavity 3 and is difficult to demold. After the demolding is completed, the telescopic rod 25 and the ejector pin 10 can be reset.

[0041] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An improved TV housing mold, comprising a movable mold (1) and a fixed mold (2), characterized in that: The fixed mold (2) is provided with a mold cavity (3), the movable mold (1) is provided with a mold core (4), the movable mold (1) is provided with a pouring port (5), the mold core (4) is provided with a main pouring channel (6) connected with the pouring port (5), the pouring port (5) is located in the middle and upper part of the movable mold (1), one end of the main pouring channel (6) is connected with a connecting channel (7), a side of the connecting channel (7) facing the mold cavity (3) is provided with a plurality of auxiliary pouring channels (8), the plurality of pouring channels are connected with the mold cavity (3), a plurality of demoulding components are installed inside the mold cavity (3), the demoulding components include a mold opening on the mold cavity (3) A spring-opening groove (9) is provided, wherein a push rod (10) is slidably connected inside the spring-opening groove (9), a push portion (11) is provided at the end of the push rod (10), the diameter of the push portion (11) is larger than that of the push rod (10), one end of the spring-opening groove (9) is provided with a receiving groove (12) for accommodating the push portion (11), a spring (13) is provided inside the spring-opening groove (9), a moving frame (18) is installed on one side of the fixed mold (2), a plurality of connecting rods (19) are installed on the moving frame (18), the connecting rods (19) are in contact with the push rod (10), and a spreading component is provided between the moving frame (18) and the fixed mold (2).

2. An improved TV housing mold according to claim 1, characterized in that: A convex ring (14) is provided on one side of the accommodating groove (12), and an annular groove (15) is provided on the side of the pushing portion (11) facing the spring-opening groove (9).

3. An improved TV housing mold according to claim 2, characterized in that: A guide groove (16) is provided on one side of the elastic slot (9), and a guide block (17) is installed on one side of the push rod (10).

4. The improved TV housing mold according to claim 3, characterized in that: The expansion assembly comprises a positioning frame (20) installed on one side of the fixed mold (2), a cam (21) is installed inside the positioning frame (20), and a toggle plate (22) is connected to one side of the cam (21).

5. An improved TV housing mold according to claim 4, characterized in that: A positioning block (23) is installed on one side of the movable frame (18), and an arc groove (24) matching with the cam (21) is opened on one side of the positioning block (23).

6. The improved TV housing mold according to claim 5, characterized in that: A telescopic rod (25) is hinged on the fixed mold (2), a long slot (26) is provided at one end of the toggle plate (22), a slider (27) is slidably connected to the long slot (26), and a telescopic end of the telescopic rod (25) is hinged to the slider (27).

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