CN219522872U

CN219522872U - A mould for moulding plastics LED display screen face guard

Info

Publication number: CN219522872U
Application number: CN202223423804.1U
Authority: CN
Inventors: 陈炎; 苏朋龙; 黄经浮
Original assignee: Dongguan Dongxin Mould Co ltd
Current assignee: Dongguan Dongxin Mould Co ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-08-15
Anticipated expiration: 2032-12-20

Abstract

The utility model discloses a die for injection molding of an LED display screen mask, which relates to the technical field of injection molding dies, and comprises an upper die and a lower die which are mutually butted, wherein a product profiling block for helping product molding is arranged on the lower die, a plurality of first sliding grooves which are vertically arranged in an array are formed in the product profiling block, and thin sheets are connected to the plurality of first sliding grooves in a sliding manner; the lower die is internally provided with at least two second sliding grooves which are arranged at intervals and penetrate through the product profiling block left and right, guide shafts are connected to the at least two second sliding grooves in a sliding mode, and the at least two guide shafts penetrate through the plurality of thin slices together, so that the left end and the right end of the plurality of thin slices are connected to the at least two guide shafts; according to the utility model, the ejector pins are replaced by the plurality of thin sheets to abut against the product, the plurality of thin sheets are in the shape of blades, the adhesive is suitable for the thin and small product, the product cannot be damaged, and the plurality of thin sheets are arranged in an array, so that the stress is uniform when the product is ejected, and the product can be conveniently and stably ejected.

Description

A mould for moulding plastics LED display screen face guard

Technical Field

The utility model relates to the technical field of injection molds, in particular to a mold for injection molding of an LED display screen mask.

Background

The mould is used for producing various moulds and tools of the needed products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods in industry. In short, a mold is a tool used to make a molded article, which is made up of various parts, with different molds being made up of different parts. The method mainly realizes the processing of the surface of the article through the change of the physical state of the formed material, and has the name of 'industrial mother'. The injection mold is a tool for producing plastic products, and generally consists of an upper mold and a lower mold, wherein the upper mold and the lower mold are closed to form a runner system and a mold cavity of the plastic products during injection molding. During injection molding, the mold is clamped on the injection molding machine, molten plastic is injected into the mold cavity and is cooled and molded in the mold cavity, meanwhile, the molten plastic is cooled in the runner system to form runner system solidification materials, the upper mold and the lower mold are separated after plastic products are molded, the plastic products are ejected out of the mold cavity through the ejection system and leave the mold, finally, the upper mold and the lower mold are closed again to carry out the next injection molding, and the whole injection molding process is circularly carried out.

As shown in fig. 1, the product 18 is an LED display screen mask, and is a grid-shaped mesh, and during injection molding, a plurality of criss-cross skeletons 17 are required to be molded, because the skeletons 17 of the product 18 are more, and the glue positions of the skeletons 17 are thin and small, it is difficult to eject the product 18 through common ejector pins, even if ejector pins matching the size of the criss-cross skeletons of the product 18 are provided, a large number of ejector pins are required to eject the product 18 smoothly, but in this way, the cost of the mold for injection molding the product 18 is high due to the large number of ejector pins, and the overall design of the mold is complex, and therefore, an improved technical scheme is necessary to solve the above problems.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a technical scheme capable of solving the problems.

The die for injection molding the LED display screen mask comprises an upper die and a lower die which are mutually butted, wherein a product profiling block for helping product molding is arranged on the lower die, a plurality of first sliding grooves which are vertically arranged in an array are formed in the product profiling block, and thin sheets are connected onto the plurality of first sliding grooves in a sliding manner;

the lower die is internally provided with at least two second sliding grooves which are arranged at intervals and penetrate through the product profiling block left and right, guide shafts are connected to the at least two second sliding grooves in a sliding mode, and the at least two guide shafts penetrate through the plurality of thin slices together, so that the left end and the right end of the plurality of thin slices are connected to the at least two guide shafts;

third sliding grooves which are symmetrically arranged are formed in two ends of the parting surface of the lower die, guide blocks are connected to the two third sliding grooves in a sliding mode, the product profiling block and a plurality of thin sheets on the product profiling block are located between the two guide blocks, at least two guide shafts penetrate through the two guide blocks together, and therefore the left end and the right end of the two guide blocks are connected to the at least two guide shafts;

the lower die is provided with an ejection mechanism, the ejection mechanism comprises an ejector plate positioned below the lower die, a first ejector pin fixedly connected to the ejector plate and a second ejector pin fixedly connected to the ejector plate, the first ejector pin is in tight fit with the guide block, the second ejector pin is in tight fit with the guide shaft, and the second ejector pin is in abdication fit with the sheet;

the ejector plate is driven to synchronously drive the first ejector pin, the second ejector pin, the guide shaft, the guide block and the sheet to move in the upward die direction until the product is ejected out through the sheet.

As a further scheme of the utility model: the product profiling block is provided with a plurality of profiling grooves which are arranged in an array manner, and the profiling grooves and the thin sheets are arranged in a staggered manner.

As a further scheme of the utility model: the second chute is oval, and the major axis length of second chute is greater than the diameter length of guiding axle.

As a further scheme of the utility model: the plurality of thin slices are made of steel slices.

As a further scheme of the utility model: a fourth chute which is in sliding fit with the first thimble is arranged in the lower die, wherein the fourth chute is communicated with the third chute.

As a further scheme of the utility model: a fifth chute which is in sliding fit with the second thimble is arranged in the lower die, wherein the fifth chute is communicated with the second chute.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the ejector pins are abutted against the product by the plurality of thin sheets, the plurality of thin sheets are blade-shaped, the thin and small-sized glue is suitable for the product with thin glue, the product is not damaged, the plurality of thin sheets are arranged in an array, so that the stress is uniform when the product is ejected, the product is convenient to stably demould, the plurality of thin sheets are abutted against the longitudinal skeleton of the product, and compared with the prior art that the plurality of ejector pins are abutted against the longitudinal skeleton of the product, the thin sheets are equivalent to connecting the plurality of ejector pins abutted against the longitudinal skeleton of the product into a whole, so that the product is ejected more stably, a large number of ejector pins are not required to be arranged, the integral structure of the die is effectively simplified, and the input cost is saved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic structural view of a product;

FIG. 2 is a schematic diagram of the structure of the present utility model;

FIG. 3 is a schematic view of the structure of the utility model with the upper mold removed;

FIG. 4 is a schematic cross-sectional view of the structure of FIG. 3;

FIG. 5 is a schematic diagram of the mating structure of the ejection mechanism, product profiling block, guide shaft, sheet and product of the present utility model;

FIG. 6 is a schematic view of the mating structure of the ejector mechanism, guide block, guide shaft and sheet of the present utility model;

FIG. 7 is a schematic illustration of the configuration of a sheet on a product contour block in accordance with the present utility model;

fig. 8 is a schematic view of the structure of the sheet in the present utility model.

Reference numerals and names in the drawings are as follows:

1. an upper die; 2. a lower die; 3. a product profiling block; 4. a first chute; 5. a sheet; 6. a second chute; 7. a guide shaft; 8. a third chute; 9. a guide block; 10. an ejection mechanism; 11. a needle ejection plate; 12. a first thimble; 13. a second thimble; 14. a simulated groove; 15. a fourth chute; 16. a fifth chute; 17. a skeleton; 18. and (5) a product.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-8, in an embodiment of the present utility model, a mold for injection molding an LED display screen mask includes an upper mold 1 and a lower mold 2 that are in butt joint with each other, a product profiling block 3 for helping the product 18 to be molded is arranged on the lower mold 2, a plurality of first sliding grooves 4 arranged in a vertical array are formed on the product profiling block 3, and a sheet 5 is slidingly connected to the plurality of first sliding grooves 4;

the lower die 2 is internally provided with at least two second sliding grooves 6 which are arranged at intervals and penetrate through the product profiling block 3 left and right, at least two second sliding grooves 6 are respectively connected with a guide shaft 7 in a sliding way, and at least two guide shafts 7 penetrate through the plurality of thin slices 5 together, so that the left end and the right end of the plurality of thin slices 5 are connected with at least two guide shafts 7;

third sliding grooves 8 which are symmetrically arranged are formed in two ends of the parting surface of the lower die 2, guide blocks 9 are connected to the two third sliding grooves 8 in a sliding manner, the product profiling block 3 and a plurality of thin sheets 5 on the product profiling block are positioned between the two guide blocks 9, and at least two guide shafts 7 penetrate through the two guide blocks 9 together, so that the left end and the right end of the two guide blocks 9 are connected to the at least two guide shafts 7;

the lower die 2 is provided with an ejection mechanism 10, the ejection mechanism 10 comprises a thimble plate 11 positioned below the lower die 2, a first thimble 12 fixedly connected to the thimble plate 11 and a second thimble 13 fixedly connected to the thimble plate 11, the first thimble 12 is in tight fit with the guide block 9, the second thimble 13 is in tight fit with the guide shaft 7, and the second thimble 13 is in abdication fit with the sheet 5;

the ejector plate 11 is driven to synchronously drive the first ejector pin 12, the second ejector pin 13, the guide shaft 7, the guide block 9 and the sheet 5 to move towards the upper die 1 until the product 18 is ejected out through the sheet 5.

According to the utility model, a product profiling block 3 is used for helping a product 18 to be molded, a plurality of first sliding grooves 4 which are vertically arranged in an array are arranged on the product profiling block, a sheet 5 is connected to the plurality of first sliding grooves 4 in a sliding way, the upper end faces of the plurality of sheets 5 when the plurality of sheets 5 are positioned on the corresponding first sliding grooves 4 are used for molding a framework 17 in the longitudinal direction of the product 18, three guide shafts 7 positioned on the same horizontal plane are arranged at the left end and the right end of a lower die 2 in a penetrating way, the three guide shafts 7 respectively penetrate through the left end, the middle end and the right end of the plurality of sheets 5 in a penetrating way, the guide blocks 9 are penetrated through the left end and the right end of the three guide shafts 7 in a penetrating way, so that the three guide shafts 7, the two guide blocks 9 and the plurality of sheets 5 form a whole, the first ejector pins 12 and the second ejector pins 13 which are fixedly connected to an ejector plate 11 in a combining way are arranged, the plurality of first ejector pins 12 and the second ejector pins 13 are abutted against the lower ends of the guide shafts 9, and the second ejector pins 13 are abutted against the lower ends of the guide shafts 7 and are abutted against the lower ends of the guide shafts 7, and each second ejector pin 13 is positioned between the two guide shafts 7;

when the mold is opened, the upper mold 1 is separated from the lower mold 2, the ejector plate 11 is driven by an external injection molding machine to move towards the upper mold 1, the first ejector pin 12 and the second ejector pin 13 synchronously move towards the upper mold 1 along with the movement of the ejector plate 11, in the process, the first ejector pin 12 drives the guide block 9 to slide on the third sliding groove 8, the guide block 9 is gradually penetrated out on the parting surface of the lower mold 2, the second ejector pin 13 drives the guide shaft 7 to slide in the second sliding groove 6, and the plurality of thin slices 5 slide on the first sliding groove 4 through the synchronous sliding of the guide block 9 and the guide shaft 7, and the plurality of thin slices 5 are gradually penetrated out on the parting surface of the lower mold 2, so that the product 18 is ejected out to the demolding;

according to the utility model, the ejector pins are abutted against the product 18 through the plurality of sheets 5, the plurality of sheets 5 are blade-shaped, the adhesive is suitable for the product 18 with thin and small adhesive positions, damage to the product 18 is avoided, the plurality of sheets 5 are arranged in an array, so that the stress is uniform when the product 18 is ejected, the product 18 is convenient to be stably ejected, the plurality of sheets 5 are abutted against the longitudinal skeleton 17 of the product 18, and compared with the prior art that the plurality of ejector pins are abutted against the longitudinal skeleton 17 of the product 18, the ejector pins abutted against the longitudinal skeleton 17 of the product 18 are integrally connected by the sheet 5, so that the product 18 is ejected more stably, a large number of ejector pins are not required to be arranged, the integral structure of the die is effectively simplified, and the input cost is saved.

In the embodiment of the utility model, the profiling block 3 of the product is provided with a plurality of profiling grooves 14 which are arranged in an array, and the profiling grooves 14 and the thin sheets 5 are arranged in a staggered manner. The upper end surfaces of the imitation groove 14 and the thin sheet 5 are consistent when being positioned on the first sliding groove 4, and are both used for forming the framework 17 of the longitudinal direction of the product 18, the quantity of the thin sheets 5 is effectively reduced through the staggered arrangement of the imitation groove 14 and the thin sheets 5, meanwhile, the forming and ejection of the product 18 are not influenced, the design is reasonable, the mechanism of the die is further simplified, and the input cost is saved.

In the embodiment of the utility model, the second chute 6 is elliptical, and the length of the long axis of the second chute 6 is longer than the diameter of the guide shaft 7. By this design, the guide shaft 7 has a sliding space, so that the sheet 5 can be driven to slide on the first chute 4.

In the embodiment of the utility model, the plurality of thin sheets 5 are all made of steel sheets. The steel sheet has high hardness and good hot hardness, is convenient for firmly ejecting the product 18, and is also resistant to high temperature when the product 18 is molded, and has reasonable design.

In the embodiment of the present utility model, a fourth chute 15 in sliding fit with the first thimble 12 is provided in the lower die 2, wherein the fourth chute 15 is communicated with the third chute 8. When the die is opened, the first ejector pin 12 slides along the fourth chute 15, so that the first ejector pin 12 can be accurately abutted against the guide block 9.

In the embodiment of the present utility model, a fifth chute 16 in sliding fit with the second thimble 13 is provided in the lower die 2, wherein the fifth chute 16 is communicated with the second chute 6. When the die is opened, the second ejector pin 13 slides along the fifth chute 16, so that the second ejector pin 13 can be accurately abutted against the guide shaft 7.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. The die for injection molding the LED display screen mask comprises an upper die and a lower die which are mutually butted, and is characterized in that a product profiling block for helping product molding is arranged on the lower die, a plurality of first sliding grooves which are vertically arranged in an array are formed in the product profiling block, and thin sheets are connected to the plurality of first sliding grooves in a sliding manner;

2. The mold for the injection molding of the LED display screen mask according to claim 1, wherein the product profiling block is provided with a plurality of profiling grooves which are arranged in an array manner, and the profiling grooves and the thin sheets are arranged in a staggered manner.

3. The mold for injection molding an LED display screen mask of claim 1, wherein the second runner is oval in shape and the major axis length of the second runner is greater than the diameter length of the guide shaft.

4. The mold for injection molding of an LED display screen mask of claim 1, wherein the plurality of flakes are steel flakes.

5. The mold for injection molding of the LED display screen mask of claim 1, wherein a fourth runner slidingly engaged with the first thimble is provided in the lower mold, wherein the fourth runner is in communication with the third runner.

6. The mold for injection molding of the LED display screen mask of claim 1, wherein a fifth runner slidingly engaged with the second thimble is provided in the lower mold, wherein the fifth runner is in communication with the second runner.