Injection mold for front shell of liquid crystal display television

Abstract

The utility model relates to the technical field of molds, in particular to a liquid crystal display television front shell injection mold which comprises a lower mold plate, an upper mold lantern ring, an upper mold plate and a positioning column. A die forming groove is formed in the lower die plate, and a plurality of positioning columns are evenly installed on the upper end face of the lower die plate; a plurality of positioning holes are evenly formed in the bottom end face of the upper mold lantern ring, the outer circumferential face of the bottom end of the upper mold plate is connected with the inner side of the upper mold lantern ring, and four injection molding holes are evenly formed in the four corners of the upper end face of the upper mold plate. A limiting assembly is arranged on the lower die plate. An adjusting assembly is arranged on the lower die plate. The adjusting assembly is installed on the lower die plate and matched with the limiting assembly, the adjusting assembly is rotated to drive the first abutting block, the second abutting block and the third abutting block on the rotating shaft to adjust the limiting assembly, and therefore the space defined by the limiting assembly and the upper die plate is changed. And the molding size is changed in the injection molding process.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an injection mold for a front shell of a liquid crystal television. Background Art

[0002] In today's life, televisions have become an indispensable daily necessity in people's daily lives and have a very important position. The existing TV shell is manufactured through molds. During the use of the existing TV shell mold, the cavity molding part adopts an integrated structure, the maintenance and replacement costs are high, and the economic benefits are relatively general.

[0003] A Chinese patent with announcement number CN201516680U discloses a liquid crystal television front shell injection mold structure, including a front mold and a rear mold, wherein the front mold is provided with a first front mold cavity, and the rear mold is provided with a first rear mold core. The first cavity formed by the cooperation of the first front mold cavity and the first rear mold core can be injection molded to form a front shell, and the front mold is also provided with a plurality of second front mold cavities located in the first front mold cavity, and the rear mold is also provided with a second rear mold core located on the first rear mold core. The second cavity formed by the cooperation of the second front mold cavity and the second rear mold core can be injection molded to form a component matching the front shell.

[0004] However, the above technical solution has the following drawbacks: the device cannot change the size of the punching plate inside the punching die according to the required size of the front shell of the LCD TV. Utility Model Content

[0005] The utility model aims to provide an injection mold for a front shell of a liquid crystal television in view of the problems existing in the background technology.

[0006] The technical solution of the utility model: an injection mold for a front shell of a liquid crystal television, comprising a lower mold plate, an upper mold ring, an upper mold plate and a positioning column;

[0007] A die groove is provided on the lower template, and a plurality of positioning columns are evenly installed on the upper end surface of the lower template;

[0008] A plurality of positioning holes are evenly arranged on the bottom end surface of the upper mold sleeve ring, the outer peripheral surface of the bottom end of the upper mold plate is connected to the inner side of the upper mold sleeve ring, and four injection holes are evenly arranged at the four corners of the upper end surface of the upper mold plate;

[0009] The lower template is provided with a limiter assembly for controlling the size of the space between the punch die and the lower template;

[0010] The lower template is provided with an adjusting component for adjusting the limiting component to change the size of the space between the punching die and the lower template.

[0011] Preferably, the limiting assembly includes a first punching plate, a second punching plate and a third punching plate;

[0012] A cavity is provided in the die groove of the lower die plate, the first die plate is located inside the cavity and the outer peripheral surface of the first die plate is closely attached to the inner wall of the lower die plate, and the first die plate is slidably connected to the lower die plate;

[0013] The second punching plate is located inside the first punching plate, and the outer peripheral surface of the second punching plate is closely attached to the inner wall of the first punching plate, and the second punching plate is slidably connected to the first punching plate;

[0014] The third punching plate is located on the inner side of the second punching plate, and the outer peripheral surface of the third punching plate is closely fitted to the inner wall of the second punching plate. The third punching plate is slidably connected to the second punching plate.

[0015] Preferably, the adjustment assembly includes a rotating shaft, a first stop block, a second stop block, a third stop block and a knob;

[0016] The first abutment block, the second abutment block and the third abutment block form an abutment assembly, and there are two groups of abutment assemblies in total. The two groups of abutment assemblies are distributed side by side on the outer periphery of the rotating shaft;

[0017] The first abutment block, the second abutment block and the third abutment block are evenly distributed along the central axis of the rotating shaft in a circumferential manner, and each group of abutment components has two first abutment blocks, three second abutment blocks and one third abutment block;

[0018] The knob is sleeved on the outer circumference of one end of the rotating shaft, and a limiting ring is sleeved on the outer circumference of the rotating shaft near the knob end. The side of the limiting ring away from the knob is connected to the outer circumference of the lower template and is coaxially distributed in the blind hole. The rotating shaft is connected to the limiting ring when rotating.

[0019] Preferably, a circular blind hole is provided on the lower template, and the circular blind hole is connected to the cavity;

[0020] When the adjusting assembly is in a state of being installed in cooperation with the lower template, the rotating shaft is located in the blind hole and is rotatably connected;

[0021] When the lower mold plate, the upper mold sleeve ring and the upper mold plate are in a matched installation state, the positioning holes are coaxially distributed with a plurality of positioning columns, and the plurality of positioning columns are slidably connected to the upper mold sleeve ring.

[0022] Preferably, the first stop block, the second stop block and the third stop block have the same shape, and the projections of the first stop block, the second stop block and the third stop block are all isosceles trapezoids.

[0023] Preferably, the side projection of the upper template is T-shaped, and the upper template is divided into an installation portion and a limiting portion, the area of ​​the installation portion is equal to the area of ​​the upper mold ring, the area of ​​the limiting portion is equal to the inner side of the upper mold ring, and the height value of the limiting portion is greater than the height value of the upper mold ring.

[0024] Compared with the prior art, the above-mentioned technical scheme of the utility model has the following beneficial technical effects: by installing an adjusting component on the lower template and cooperating with the limiting component, the rotating adjusting component drives the first stop block, the second stop block and the third stop block on the rotating shaft to adjust the limiting component, thereby changing the space enclosed by the limiting component and the upper template, thereby changing the size of the mold during the injection molding process.

[0025] By evenly distributing the first, second and third blocks in a circular pattern along the central axis of the rotating shaft on the adjusting component, and providing four first blocks, six second blocks and two third blocks, the space enclosed by the limit assembly and the upper template can be changed by distributing the first, second and third blocks at different positions on the abutting component during the rotation of the adjusting component, thereby changing the size of the mold during the injection molding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The utility model is a three-dimensional diagram of the exploded structure of an injection mold for a front shell of a liquid crystal television.

[0027] Figure 2 for Figure 1 Another perspective of the stereogram.

[0028] Figure 3 for Figure 1 A perspective view of the middle adjustment assembly.

[0029] Figure numerals: 1, lower template; 2, upper template ring; 3, upper template; 4, positioning column; 5, first punch template; 6, second punch template; 7, third punch template; 8, rotating shaft; 9, first stop block; 10, second stop block; 11, third stop block; 12, knob. DETAILED DESCRIPTION

[0030] Embodiment 1

[0031] like Figure 1-3 As shown, the utility model provides an injection mold for a front shell of a liquid crystal television, comprising a lower mold plate 1, an upper mold ring 2, an upper mold plate 3 and a positioning column 4;

[0032] A mold groove is provided on the lower mold plate 1, and a plurality of positioning columns 4 are evenly installed on the upper end surface of the lower mold plate 1;

[0033] A plurality of positioning holes are evenly formed on the bottom end surface of the upper mold sleeve 2, the outer peripheral surface of the bottom end of the upper mold plate 3 is connected to the inner side of the upper mold sleeve 2, and four injection holes are evenly formed at the four corners of the upper end surface of the upper mold plate 3;

[0034] The lower template 1 is provided with a limiter assembly for controlling the space size between the punch die and the lower template;

[0035] The lower template 1 is provided with an adjusting component for adjusting the limiting component to change the size of the space between the punch die and the lower template.

[0036] The limiting assembly includes a first punching plate 5, a second punching plate 6 and a third punching plate 7;

[0037] A cavity is provided in the die groove of the lower die plate 1, the first die plate 5 is located inside the cavity and the outer peripheral surface of the first die plate 5 is closely attached to the inner wall of the lower die plate 1, and the first die plate 5 is slidably connected to the lower die plate 1;

[0038] The second punching plate 6 is located inside the first punching plate 5 and the outer peripheral surface of the second punching plate 6 is closely attached to the inner wall of the first punching plate 5, and the second punching plate 6 is slidably connected to the first punching plate 5;

[0039] The third punching plate 7 is located on the inner side of the second punching plate 6 and the outer peripheral surface of the third punching plate 7 is tightly fitted to the inner wall of the second punching plate 6. The third punching plate 7 is slidably connected to the second punching plate 6. The third punching plate 7 is a solid structure. The first punching plate 5 and the second punching plate 6 are both rectangular hollow structures.

[0040] A circular blind hole is provided on the lower template 1, and the circular blind hole is connected with the cavity;

[0041] When the adjusting assembly is in a state of being mounted in cooperation with the lower template 1, the rotating shaft 8 is located in the blind hole and is rotatably connected;

[0042] When the lower mold plate 1 , the upper mold ring 2 and the upper mold plate 3 are in a coordinated installation state, the positioning holes are coaxially distributed with a plurality of positioning columns 4 , and the plurality of positioning columns 4 are slidably connected to the upper mold ring 2 .

[0043] The first block 9, the second block 10 and the third block 11 have the same shape, and the projections of the first block 9, the second block 10 and the third block 11 are all isosceles trapezoids. During the rotation of the rotating shaft 8, the first block 9, the second block 10 and the third block 11 with the isosceles trapezoidal structure can maintain good support and stability for the first punching plate 5, the second punching plate 6 and the third punching plate 7.

[0044] The side projection of the upper template 3 is T-shaped. The upper template 3 is divided into an installation part and a limiting part. The area of ​​the installation part is equal to the area of ​​the upper mold ring 2, and the area of ​​the limiting part is equal to the inner side of the upper mold ring 2. The height value of the limiting part is greater than the height value of the upper mold ring 2. During the injection molding process, the limiting part of the upper template 3 is located in the mold groove of the lower template 1 and is close to the inner wall of the lower template 1, and forms a good closed mold space with the first punching template 5, the second punching template 6 and the third punching template 7, so that the mold integrity of the punched mold is higher.

[0045] Embodiment 2

[0046] like Figure 1-3As shown, the present invention provides an injection mold for a front shell of a liquid crystal television. Compared with the first embodiment, this embodiment further specifically discloses the specific structure of the adjustment component.

[0047] In this embodiment, the adjustment assembly includes a rotating shaft 8, a first stop block 9, a second stop block 10, a third stop block 11 and a knob 12;

[0048] The first abutment block 9, the second abutment block 10 and the third abutment block 11 form an abutment assembly. There are two groups of abutment assemblies in total. The two groups of abutment assemblies are distributed side by side on the outer periphery of the rotating shaft 8.

[0049] The first stopper 9, the second stopper 10 and the third stopper 11 are evenly distributed along the central axis of the rotating shaft 8 in a circumferential manner. In each group of abutment components, there are two first stoppers 9, three second stoppers 10 and one third stopper 11.

[0050] The knob 12 is sleeved on the outer circumference of one end of the rotating shaft 8, and a limiting ring is sleeved on the outer circumference of the rotating shaft 8 near the end of the knob 12. The side of the limiting ring away from the knob 12 is connected to the outer circumference of the lower template 1 and is coaxially distributed in the blind hole. The rotating shaft 8 is rotated to connect the limiting ring, and the first stop block 9, the second stop block 10 and the third stop block 11 are evenly distributed along the central axis of the rotating shaft 8 in a circle. At the same time, there are four first stops 9, six second stops 10, and two third stops 11. The rotating adjustment component drives the first punching template 5, the second punching template 6 and the third punching template 7 to rise simultaneously or at different times, thereby changing the size of the punching die.

[0051] In summary, in the utility model, first, the knob 12 drives the rotating shaft 8 to rotate. When it is rotated to the side where the first stop block 9 is all, the first punching plate 5, the second punching plate 6 and the third punching plate 7 rise at the same time. When it is rotated to the side where the second stop block 10 is all, the second punching plate 6 and the third punching plate 7 rise at the same time. When it is rotated to the side where the third stop block 11 is all, only the third punching plate 7 rises. The knob 12 is rotated according to the required size of the front shell of the LCD TV to determine the size of the punching die.

[0052] At this time, the upper mold plate 3 and the upper mold ring 2 are lowered, and aligned with the positioning holes through multiple positioning columns 4. At the same time, injection is performed into the space surrounded by the upper mold plate 3 and the lower mold plate 1 through the injection hole. The molding hole opens the upper mold plate 3 and the lower mold plate 1 to complete the punching process.

[0053] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An injection mold for a front shell of a liquid crystal television, characterized in that: It comprises a lower mold plate (1), an upper mold ring (2), an upper mold plate (3) and a positioning column (4); A mold groove is provided on the lower mold plate (1), and a plurality of positioning columns (4) are evenly installed on the upper end surface of the lower mold plate (1); A plurality of positioning holes are evenly arranged on the bottom end surface of the upper mold sleeve (2); the outer peripheral surface of the bottom end of the upper mold plate (3) is connected to the inner side of the upper mold sleeve (2); and four injection holes are evenly arranged at four corners of the upper end surface of the upper mold plate (3); The lower template (1) is provided with a limit assembly for controlling the size of the space between the punch die and the lower template; The lower template (1) is provided with an adjustment component for adjusting the limit component to change the size of the space between the punching die and the lower template.

2. The liquid crystal television front shell injection mold according to claim 1, characterized in that: The limiting assembly comprises a first punching plate (5), a second punching plate (6) and a third punching plate (7); A cavity is provided in the die groove of the lower die plate (1), the first die plate (5) is located inside the cavity and the outer peripheral surface of the first die plate (5) is closely fitted to the inner wall of the lower die plate (1), and the first die plate (5) is slidably connected to the lower die plate (1); The second punching plate (6) is located on the inner side of the first punching plate (5) and the outer peripheral surface of the second punching plate (6) is tightly fitted to the inner wall of the first punching plate (5), and the second punching plate (6) is slidably connected to the first punching plate (5); The third punching plate (7) is located on the inner side of the second punching plate (6) and the outer peripheral surface of the third punching plate (7) is tightly fitted to the inner wall of the second punching plate (6). The third punching plate (7) is slidably connected to the second punching plate (6).

3. The liquid crystal television front shell injection mold according to claim 2, characterized in that: The adjustment component comprises a rotating shaft (8), a first stop block (9), a second stop block (10), a third stop block (11) and a knob (12); The first abutment block (9), the second abutment block (10) and the third abutment block (11) form an abutment assembly, and there are two groups of abutment assemblies in total. The two groups of abutment assemblies are distributed side by side on the outer periphery of the rotating shaft (8); The first abutment block (9), the second abutment block (10) and the third abutment block (11) are evenly distributed along the central axis of the rotating shaft (8) in a circumferential manner, and each group of abutment components has two first abutment blocks (9), three second abutment blocks (10) and one third abutment block (11); The knob (12) is sleeved on the outer circumference of one end of the rotating shaft (8), and a limiting ring is sleeved on the outer circumference of the rotating shaft (8) at the end close to the knob (12). The side of the limiting ring away from the knob (12) is connected to the outer circumference of the lower template (1) and is coaxially distributed with the blind hole. The rotating shaft (8) is rotatably connected to the limiting ring.

4. The liquid crystal television front shell injection mold according to claim 3, characterized in that: A circular blind hole is provided on the lower template (1), and the circular blind hole is connected to the cavity; When the adjusting assembly is in a state of being mounted in cooperation with the lower template (1), the rotating shaft (8) is located in the blind hole and is rotatably connected; When the lower mold plate (1), the upper mold ring (2) and the upper mold plate (3) are in a cooperative installation state, the positioning holes are coaxially distributed with a plurality of positioning columns (4), and the plurality of positioning columns (4) are slidably connected to the upper mold ring (2).

5. The liquid crystal television front shell injection mold according to claim 3, characterized in that: The first butt block (9), the second butt block (10) and the third butt block (11) have the same shape, and the projections of the first butt block (9), the second butt block (10) and the third butt block (11) are all isosceles trapezoids.

6. The liquid crystal television front shell injection mold according to claim 1, characterized in that: The side projection of the upper template (3) is T-shaped. The upper template (3) is divided into a mounting portion and a limiting portion. The area of ​​the mounting portion is equal to the area of ​​the upper mold ring (2), the area of ​​the limiting portion is equal to the inner side of the upper mold ring (2), and the height value of the limiting portion is greater than the height value of the upper mold ring (2).

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