Die for preparing LED display screen box

Abstract

The utility model discloses a mould for preparing an LED (light-emitting diode) display screen box body, which comprises an upper mould and a lower mould, an upper insert and a lower insert are respectively and fixedly arranged in the upper mould and the lower mould, and a cavity for forming the box body is arranged between the upper insert and the lower insert; the lower insert is provided with at least one exhaust mechanism communicated with the cavity, the exhaust mechanism comprises a cinder ladle groove and an exhaust channel which are formed in the lower insert and located on the side of the cavity, one end of the cinder ladle groove is communicated with the cavity, the groove wall, facing the cavity, of the cinder ladle groove is a groove inclining upwards, and the other end of the cinder ladle groove is communicated with one end of the exhaust channel. An exhaust valve is arranged at the other end of the exhaust channel. By arranging the exhaust mechanism and the exhaust valve, gas in the cavity can be effectively exhausted, the problem of lack of an exhaust structure in the past is solved, the product quality is improved, and the production of defective products is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to box technology field especially relates to a mould for preparing LED display screen box. BACKGROUND

[0002] Referring to the patent literature of application No. CN2018104974491, it discloses a box mould for LED display screen, which comprises an upper mould and a lower mould, the upper mould comprises an upper mould plate, positioning pits, wedge-shaped blocks, a male mould core and inclined guide columns embedded in the lower bottom surface of the upper mould plate, the lower mould comprises a mould base, a lower mould plate arranged above the mould base, a female mould core arranged on the upper surface of the lower mould plate and matched with the male mould core, sliders evenly distributed in the periphery of the female mould core for core pulling of the side wall of the workpiece, and wear-resistant plates inlaid in the contact surface of the slider and the wedge-shaped block, the top surface of the slider is downwardly inclined and provided with inclined holes matched with the inclined guide columns, and the four corners of the lower mould plate are upwardly provided with positioning protrusions, and adjacent positioning protrusions form sliding ways matched with the sliders. The mould lacks an exhaust mechanism, and the gas cannot be discharged in time during the die-casting process of the mould, which can cause defects such as pits on the product and affect the product quality. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a mould for preparing an LED display screen box, which can solve the problem of lacking an exhaust structure.

[0004] In order to solve the above technical problem, the utility model discloses a mould for preparing an LED display screen box, which comprises an upper mould and a lower mould, and an upper inlay and a lower inlay are fixedly installed in the upper mould and the lower mould respectively, a cavity for forming a box is arranged between the upper inlay and the lower inlay, the lower inlay is provided with at least one exhaust mechanism communicated with the cavity, the exhaust mechanism comprises a slag pocket groove and an exhaust passage, the slag pocket groove is arranged on the lower inlay and located on the side of the cavity, one end of the slag pocket groove is communicated with the cavity, the groove wall of the slag pocket groove towards the cavity is an upwardly inclined bevel, the other end of the slag pocket groove is communicated with one end of the exhaust passage, and the other end of the exhaust passage is provided with an exhaust valve.

[0005] The exhaust valve comprises an upper shell and a lower shell, the upper shell is fixedly installed on the outer side surface of the upper mould, and the lower shell is fixedly installed on the outer side surface of the lower mould.

[0006] The top surface of the lower shell is provided with an air inlet passage and an air outlet passage communicated with the air inlet passage, and a plurality of recesses are arranged at intervals between the air inlet passage and the air outlet passage.

[0007] The bottom surface of the upper shell downwardly extends a plurality of clamping protrusions arranged at intervals, in the assembled state, the clamping protrusions are arranged in the corresponding recesses, and a gap is arranged between the clamping protrusions and the groove bottom of the recesses.

[0008] The cross-sectional shape of the card convex and the cross-sectional shape of the groove are both triangular.

[0009] The upper die is provided with a pouring opening, and a hot nozzle sleeve is fixedly installed in the pouring opening.

[0010] The lower die is fixedly installed with a hot nozzle seat, and the hot nozzle seat is inserted into the hot nozzle sleeve in the assembled state.

[0011] Compared with the prior art, the embodiment of the utility model has the following beneficial effects: through the setting of the exhaust mechanism and the exhaust valve, the gas in the cavity can be effectively exhausted, the problem of lacking the exhaust structure in the past is solved, the product quality is improved, and the production of defective products is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to make the person in the art better understand the scheme of the utility model, the drawings needed in the embodiment description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for the person skilled in the art.

[0013] Figure 1 It is a structure schematic view of the mold in the embodiment;

[0014] Figure 2 It is an exploded view of the mold in the embodiment;

[0015] Figure 3 It is a structure schematic view of the mold after the upper die and the upper shell are hidden in the embodiment;

[0016] Figure 4 It is an enlarged view of A in the embodiment; Figure 3

[0017] Figure 5 It is a structure schematic view of the upper shell in the embodiment;

[0018] Figure 6 It is a structure schematic view of the hot nozzle seat in the embodiment. DETAILED DESCRIPTION

[0019] In order to make the person in the art better understand the scheme of the utility model, the drawings needed in the embodiment description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for the person skilled in the art.

[0020] ​The terms "first", "second", and the like in the description and claims of the present utility model, and the above drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, device, product or end including a series of steps or units is not limited to the listed steps or units, but can optionally also include steps or units not listed, or can optionally also include other steps or units inherent to these processes, methods, products or ends.

[0021] Reference herein to "embodiment" means that the specific features, structures, or characteristics described in connection with an embodiment can be included in at least one embodiment of the present utility model. The appearance of this phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] The utility model discloses a kind of specific embodiments for preparing the mold of LED display screen box, please see Figures 1 to 6 , including upper die 1 and lower die 2, and upper die 1 and lower die 2 are fixedly installed with upper insert and lower insert 21 respectively in, upper insert and lower insert 21 between being equipped with cavity for forming box.

[0023] As an improvement, lower insert 21 is provided with twelve exhaust mechanisms communicated with cavity, and every four exhaust mechanisms form a group, and share an exhaust valve 3 located outside the mold. Specifically, the exhaust mechanism includes a slag pocket groove 22 and an exhaust passage 24 opened in the lower insert 21 and located on the side of the cavity. One end of the slag pocket groove 22 is communicated with the cavity, and the groove wall of the slag pocket groove 22 facing the cavity is an inclined bevel 23. It should be noted that there is a certain gap between the highest point of the bevel 23 and the upper insert, which facilitates the flow of gas and slag into the slag pocket groove 22. The bevel 23 is the gas inlet of the slag pocket groove 22, and the other end of the slag pocket groove 22 is the gas outlet, which is communicated with one end of the exhaust passage 24. The other end of the exhaust passage 24 is provided with the exhaust valve 3.

[0024] In this embodiment, the exhaust valve 3 includes an upper housing 31 and a lower housing 32. The upper housing 31 is fixedly installed on the outer side surface of the upper die 1, and the lower housing 32 is fixedly installed on the outer side surface of the lower die 2. The upper housing 31 and the lower housing 32 are closed simultaneously with the closing of the upper die 1 and the lower die 2.

[0025] As a preferred scheme, the top surface of the lower shell 32 is provided with an air inlet channel 33 and an air outlet channel 36 communicated with the air inlet channel 33, which can be understood as that the air inlet channel 33 and the air outlet channel 36 are both grooves provided on the top surface of the lower shell 32, and a plurality of spaced recesses 34 are arranged between the air inlet channel 33 and the air outlet channel 36. The bottom surface of the upper shell 31 extends downward a plurality of spaced clamping protrusions 35, which are arranged in the corresponding recesses 34 in the assembled state, and a gap is arranged between the clamping protrusions 35 and the groove bottoms of the recesses 34, which can prevent external foreign matters from entering the cavity.

[0026] Optionally, the cross-sectional shape of the clamping protrusion 35 and the cross-sectional shape of the recess 34 are both triangular.

[0027] In the embodiment, the upper mold 1 is provided with a pouring opening 11, and a hot nozzle sleeve 12 is fixedly installed in the pouring opening 11. The lower mold 2 is fixedly installed with a hot nozzle seat 20, which is inserted into the hot nozzle sleeve 12 in the assembled state. The separate design of the hot nozzle sleeve 12 and the hot nozzle seat 20 facilitates the disassembly and maintenance of the mold, prolonging the service life of the mold. The outer circumferential side surface of the hot nozzle seat 20 is provided with a pouring channel 201, which is an L-shaped groove, and the middle part of the groove bottom is arched upward to form a guide part, which can guide the pouring liquid to flow to both sides in time and quickly, and has a certain guiding effect on the discharge of gas.

[0028] Compared with the prior art, the mold of the embodiment can effectively discharge the gas in the cavity by setting the exhaust mechanism and the exhaust valve 3, solves the problem of lack of exhaust structure in the prior art, improves the product quality, and reduces the production of defective products.

[0029] Finally, it should be noted that: the mold for preparing the LED display screen box disclosed in the embodiment of the utility model is only a preferred embodiment of the utility model, and is only used to illustrate the technical scheme of the utility model, but not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that; it can still modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the spirit and scope of the technical scheme of the embodiments of the utility model.

Claims

1. A mold for manufacturing an LED display screen case, characterized by, The upper die and the lower die are fixedly installed with an upper insert and a lower insert respectively, and a cavity for forming a box body is arranged between the upper insert and the lower insert; The lower insert is provided with at least one exhaust mechanism communicated with the cavity, the exhaust mechanism comprises a slag pocket and an exhaust passage, the slag pocket is arranged on the lower insert and located on the side of the cavity, one end of the slag pocket is communicated with the cavity, and the groove wall of the slag pocket towards the cavity is an upwardly inclined bevel, the other end of the slag pocket is communicated with one end of the exhaust passage, and the other end of the exhaust passage is provided with an exhaust valve.

2. The mold for preparing the LED display screen box according to claim 1, wherein, The exhaust valve comprises an upper shell and a lower shell, the upper shell is fixedly installed on the outer side of the upper die, and the lower shell is fixedly installed on the outer side of the lower die.

3. The mold for preparing the LED display screen box according to claim 2, wherein, The top surface of the lower shell is provided with an air inlet passage and an air outlet passage communicated with the air inlet passage, and a plurality of recesses are arranged between the air inlet passage and the air outlet passage.

4. The mold for preparing the LED display screen box according to claim 3, wherein, The bottom surface of the upper shell extends downwardly a plurality of clamping protrusions arranged at intervals, in the assembled state, the clamping protrusions are arranged in the corresponding recesses, and a gap is arranged between the clamping protrusions and the groove bottom of the recesses.

5. The mold for preparing the LED display screen box according to claim 4, wherein, The cross-sectional shape of the clamping protrusion and the cross-sectional shape of the recess are both triangular.

6. The mold for preparing a LED display screen box according to claim 1, wherein, The upper die is provided with a pouring gate, and a hot nozzle sleeve is fixedly installed in the pouring gate.

7. The mold for preparing a LED display screen box according to claim 6, wherein, The lower die is fixedly installed with a hot nozzle seat, in the assembled state, the hot nozzle seat is inserted into the hot nozzle sleeve, and at least one pouring channel is arranged on the outer circumferential surface of the hot nozzle seat.

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