CN219522847U - Double-colored mould of notebook screen shell - Google Patents

Abstract

The utility model discloses a double-color mold for a notebook screen shell, which comprises the following components: a lower fixing assembly; the upper fixing assembly comprises an upper fixing plate, a hot runner plate arranged on the surface of the upper fixing plate and facing the lower fixing assembly, and a female die plate formed on the surface of the hot runner plate, wherein a second accommodating cavity which is inwards concave and matched with the first accommodating cavity is formed on the outer surface of the female die plate; the male die core is arranged in the first accommodating cavity; a first female die core and a second female die core. Can cut off the waste material of connecting the product body and carry out subsequent two-shot forming after one-shot forming, be favorable to improving the quality and the production efficiency of product.

Description

Double-colored mould of notebook screen shell

Technical Field

The utility model belongs to the technical field of injection molding, relates to a double-color injection molding die, and particularly relates to a double-color die for a notebook screen shell.

Background

Double-shot molding refers to a molding process in which two different materials are injected into the same set of mold, thereby realizing that the injection molded part is formed by the two materials. Some materials are different in color, and some materials are different in hardness, so that the attractiveness, assembly and other performances of the product are improved.

The utility model patent of China with the application number of 202220344146.8 discloses a double-color double-core-pulling injection mold for molding a wireless base shell, which comprises a first injection mold and a second injection mold, wherein the first injection mold and the second injection mold are oppositely arranged and can rotate for 180 degrees, each of the first injection mold and the second injection mold comprises a panel, a water gap plate, an A plate, a B plate, a top needle plate and a bottom plate which are sequentially arranged from top to bottom, a cavity is formed by clamping the A plate and the B plate, a glue injection nozzle is arranged on the panel and communicated with the cavity, core-pulling mechanisms are arranged on the side parts of the first injection mold and the second injection mold, each core-pulling mechanism comprises a driving mechanism and a filling piece connected with the output end of the driving mechanism, the driving mechanism is positioned on the side parts of the A plate and the B plate, the output end of the driving mechanism and the filling piece extend into the mold from the A plate to the B plate, and the size of the filling piece is matched with the size of a groove on the side wall of the wireless base shell. The notebook screen shell is an ultrathin piece, a small amount of waste materials connected with the product body are formed at the edge after one shot forming, and the waste materials need to be cut off after one shot is finished, otherwise, the quality of the product is affected; there is a need for further improvement in the structure of a two-shot injection mold to meet the above-described needs.

Disclosure of Invention

The utility model aims to provide a double-color injection molding die for solving the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a notebook screen housing bi-color mold comprising:

the lower fixing assembly comprises a lower fixing plate, a first lower ejector plate, a first upper ejector plate, a second lower ejector plate, a second upper ejector plate, a male template, a plurality of first guide rods, a plurality of second guide rods and a cutting knife, wherein the first lower ejector plate is adjustably arranged on the lower fixing plate, the first upper ejector plate is arranged on the surface of the first lower ejector plate, the second lower ejector plate is adjustably arranged between the lower fixing plate and the first lower ejector plate, the second upper ejector plate is arranged on the surface of the second lower ejector plate, the male template is arranged at intervals with the first upper ejector plate, the first guide rods penetrate through the male template, one end of the first guide rods is arranged on the surface of the second lower ejector plate, the second guide rods penetrate through the male template, one end of the second guide rods is arranged on the surface of the first lower ejector plate, and the cutting knife penetrates through the male template, one end of the cutting knife is arranged on the surface of the first lower ejector plate, and the first accommodating cavity is formed in the outer surface of the male template;

the upper fixing assembly comprises an upper fixing plate, a hot runner plate arranged on the surface of the upper fixing plate and facing the lower fixing assembly, and a female die plate formed on the surface of the hot runner plate, wherein a second accommodating cavity which is inwards concave and matched with the first accommodating cavity is formed on the outer surface of the female die plate;

the male die core is arranged in the first accommodating cavity;

the first female die core and the second female die core are alternatively arranged in the second accommodating cavity and matched with the male die core; a plurality of injection channels are formed between the male die core and the first female die core; the other end of the cutter thimble penetrates through the male die core and corresponds to the jet channel; a plurality of two-shot flow channels are formed between the male die core and the second female die core.

Preferably, the upper fixture assembly further includes a heat shield formed on a surface of the upper fixture plate and facing away from the lower fixture assembly.

Optimally, a plurality of first through holes corresponding to the first jet channels are formed in the first female die core, and a plurality of second through holes corresponding to the second jet channels are formed in the second female die core; and a plurality of injection heads which are in one-to-one correspondence with the first through holes or the second through holes are formed on the hot runner plate.

Optimally, the lower fixing assembly further comprises a plurality of limiting side plates which are formed on the surface of the lower fixing plate and enclose a containing space, and the first lower ejector pin plate is adjustably arranged in the containing space.

Optimally, the adjustable distance between the first lower ejector plate and the second lower ejector plate is 0.45-0.48 mm independently of each other.

Preferably, the two jet channels are located on the outer ring of the one jet channel.

Compared with the prior art, the utility model has the beneficial effects that: according to the double-color die for the notebook screen shell, the lower fixing assembly, the upper fixing assembly, the male die core, the first female die core and the second female die core with specific structures are matched, so that waste materials connected with a product body can be cut off after one-shot forming, and then subsequent two-shot forming is carried out, and the quality and the production efficiency of the product are improved.

Drawings

FIG. 1 is a front view of a notebook screen housing of the present utility model;

FIG. 2 is an oblique view of a notebook screen housing of the present utility model;

FIG. 3 is a simplified diagram of a production system for a notebook screen housing of the present utility model;

FIG. 4 is a schematic diagram of a dual-color mold for a notebook screen housing (prior to shearing) according to the present utility model;

FIG. 5 is a schematic view of a dual-color mold (after cutting) for a notebook screen housing according to the present utility model;

FIG. 6 is a schematic diagram of the operation of the cutter ejector pins in the dual-color mold of the notebook screen housing (before shearing);

FIG. 7 is a schematic diagram of the operation of the cutter ejector pins in the dual-color mold of the notebook screen housing of the present utility model (after shearing);

FIG. 8 is a schematic diagram of a mold insert and a hot runner plate (one shot) of a dual-color mold for a notebook screen housing according to the present utility model

Fig. 9 is a schematic structural view (two shot) of a core and a hot runner plate in a dual-color mold for a notebook screen housing according to the present utility model.

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.

The notebook screen housing 1 'shown in fig. 1 and 2 includes an inner ring body 11' and an outer ring body 12 'formed around the inner ring body 11' (i.e., the outer ring body 12 'is integrally formed at the outer side of the inner ring body 11'); the inner ring body 11' can be provided with a camera hole and other structures; the outer ring body 12' is made of a material different from the inner ring body 11', and can be made of a relatively flexible material to protect the inner ring body 11' (for example, TPU, which can play a role in buffering and preventing falling when the notebook falls from a high place).

The notebook screen housing 1' may be prepared by using an existing two-shot injection molding machine system (as disclosed in chinese patent application No. 201810615891.X or conventional in the market), for example, the two-shot injection molding machine system may include a base 1, a molding die unit 2 mounted on the base 1, a one-shot injection unit 3 mounted on the base 1 and matched with the molding die unit 2, and a two-shot injection unit 4 mounted on the base 1 and matched with the molding die unit 2 (the one-shot injection unit 3 and the two-shot injection unit 4 are disposed at intervals, and the existing two-shot injection unit is adopted). In this embodiment, the molding die unit 2 includes a rotatable male die holder 21 (the rotational axis of the male die holder 21 is horizontally disposed), a driving unit 24 mounted on the base 1 and connected to the male die holder 21 for driving the male die holder 21 to rotate, a female die holder 22 mounted on the male die holder 21 to be openable and closable and matched with the male die holder 21, and at least one two-color die 23 (i.e., two-color dies of a notebook screen housing; for improving production efficiency, there are usually two-color dies 23) disposed between the male die holder 21 and the female die holder 22. The utility model is not limited to the specific structure of the one-shot injection unit 3, the two-shot injection unit 4, etc., and the foregoing description is provided for more fully and clearly showing the working principle of the two-color mold 23.

The two-color mold 23 shown in fig. 4 and 5 mainly includes a lower fixing component 231, an upper fixing component 232, a male mold core 234, a first female mold core 233, a second female mold core 233', and other structures.

The lower fixing assembly 231 includes a lower fixing plate 2311, a second lower thimble plate 2312, a second upper thimble plate 2313, a first lower thimble plate 2314, a first upper thimble plate 2315, a male mold plate 2316 and other structures. In use, the lower fixed plate 2311 is mounted to the male die holder 21 by conventional fasteners; first lower spike plate 2314 is adjustably mounted to lower fixed plate 2311 (here, adjustable to move up and down relative to lower fixed plate 2311, here, the definition of up and down direction is defined according to the direction of view in fig. 4, the following is the same); first upper thimble plate 2315 is mounted on a surface of first lower thimble plate 2314, which may be mounted on first lower thimble plate 2314 by conventional fasteners, but is preferably detachably assembled together by conventional snap-fit arrangements (hereinafter); second lower needle plate 2312 is adjustably disposed between lower fixed plate 2311 and first lower needle plate 2314 (here, is adjustable to move up and down relative to lower fixed plate 2311 or first lower needle plate 2314); second upper thimble plate 2313 is mounted on a surface of second lower thimble plate 2312 (i.e., second upper thimble plate 2313 is positioned between second lower thimble plate 2312 and first lower thimble plate 2314; second upper thimble plate 2313 and second lower thimble plate 2312 are connected in the same manner as described above). The male template 2316 is spaced apart from the first upper thimble plate 2315 to provide space for movement of the first upper thimble plate 2315; the outer surface of the male template 2316 (i.e., the surface facing the upper fixture assembly 232) defines an inwardly recessed first receiving cavity.

First guide bar 2317 is provided in plurality and is penetrated in male mold plate 2316 and one end is mounted to the surface of second lower thimble plate 2312; at this time, the first guide bar 2317 passes through the male mold plate 2316, and the lower end thereof passes through the first upper thimble plate 2315, the first lower thimble plate 2314 and the second upper thimble plate 2313 to be mounted on the surface of the second lower thimble plate 2312; the upper end of the first guide bar 2317 may abut against the surface of the upper fixing member 232 before shearing. Second guide bar 2318 is also provided with a plurality of guide bars, which are penetrated in male mold plate 2316 and one end of which is mounted to the surface of first lower thimble plate 2314; at this time, second guide bar 2318 passes through male die plate 2316, and its lower end passes through first upper thimble plate 2315 to be mounted to the surface of first lower thimble plate 2314; before shearing, there is a small gap (the adjustable distance between first lower thimble plate 2314 and second lower thimble plate 2312 is 0.45-0.48 mm, and preferably 0.48mm in this embodiment) between the upper end of second guide rod 2318 and upper fixed assembly 232, i.e., the gap is the distance that first lower thimble plate 2314 and first upper thimble plate 2315 are movable, as shown in fig. 4), and after shearing, the upper end of second guide rod 2318 contacts the surface of upper fixed assembly 232 (as shown in fig. 5). The cutter thimble 2319 slidably penetrates through the male die plate 2316 (i.e. a hole corresponding to the cutter thimble 2319 is formed in the male die plate 2316) and one end of the cutter thimble 2319 is mounted on the surface of the first lower thimble plate 2314, so that the cutter thimble 2319 can move synchronously with the first lower thimble plate 2314 (when the first lower thimble plate 2314 moves upwards, the cutter thimble 2319 moves upwards synchronously, thereby shearing a product formed by injection molding to remove residual waste materials in an injection channel, and then performing subsequent two-shot injection molding (as shown in fig. 6 and 7).

The upper fixing assembly 232 includes an upper fixing plate 2321, a hot runner plate 2322 (or hot runner plate 2322'), a master mold plate 2323, and the like. In use, the upper mounting plate 2321 is mounted to the female mount 22 by conventional fasteners spaced from the lower mounting plate 2311. The hot runner plate 2322 is mounted on a surface of the upper fixing plate 2321 and faces the lower fixing assembly 231; it should be noted that, two-color molds 23 are usually installed on one male mold base 21, one two-color mold 23 is used for one-shot injection molding, and the other two-color mold 23 is used for two-shot injection molding; therefore, the hot runner plates 2322, 2322' may be regarded as the same structure of different two-color molds 23. The female mold plate 2333 is formed on the surface of the hot runner plate 2322 (the forming manner is the same as that of the upper and lower surfaces), and at this time, the outer surface (the surface facing the lower fixing component 231) of the female mold plate 2323 is provided with a second accommodating cavity which is concave inwards and is matched with the first accommodating cavity.

The male mold insert 234 is disposed within the first receiving cavity, which is typically secured therein by conventional fasteners; is not replaced in the injection molding process; however, when there are two dual-color molds 23, the male mold core 234 can be synchronously rotated 180 ° or reset along with the male mold base 21.

The first female mold insert 233 and the second female mold insert 233' are alternatively arranged in the second accommodating cavity and are matched with the male mold insert 234; a plurality of jet channels 2341 are formed between the male die core 234 and the first female die core 233, and the other end of the cutter thimble 2319 penetrates through the male die core 234 and corresponds to one jet channel 2341; a plurality of two-jet channels 2342 are formed between the male mold core 234 and the second female mold core 233'; the plurality of two-jet channels 2342 are located on the outer ring of the plurality of one-jet channels 2341 (as shown in fig. 8 and 9). In the injection molding process, the first female mold insert 233 and the second female mold insert 233' need to be switched to form a jet channel 2341 and a two jet channel 2342 with the male mold insert 234 respectively; the second cavity 233' may be replaced with the original first cavity 233 to perform two-shot molding, and then replaced with the first cavity 233, which may affect the production efficiency; it is preferable that the upper fixing member 232 (with the first female mold core 233 installed) is removed from the lower fixing member 231, and another upper fixing member 232 (with the second female mold core 233 installed) is replaced, and then the upper fixing member 232 is replaced (the removal and replacement operations are performed in cooperation with the rotation and replacement operations of the male mold base 21 or the male mold core 234).

In the present embodiment, the upper fixing assembly 232 further includes a heat insulating plate 2324 formed on a surface of the upper fixing plate 2321 and facing away from the lower fixing assembly 231. The first female mold core 233 is provided with a plurality of first through holes 2331 corresponding to one jet channel 2341, and the second female mold core 233 'is provided with a plurality of second through holes 2331' corresponding to two jet channels 2342. The hot runner plate 2322 is provided with a plurality of injection heads 23221 which are in one-to-one correspondence with the first through holes 2331, and the hot runner plate 2322' is provided with a plurality of injection heads 23221' which are in one-to-one correspondence with the second through holes 2331 '; it should be noted that, the hot runner plate 2322 and the hot runner plate 2322' are also formed with a material injection runner independently from each other, and the side surfaces thereof are also provided with a material injection auxiliary structure such as a material injection electromagnetic valve independently from each other (the material injection auxiliary structure is an existing conventional structure and is not the utility model point of the present utility model).

The double-color forming method of the notebook screen shell is based on the double-color mold 23 and specifically comprises the following steps of:

(a) Injecting a first molding material between the male mold core 234 and the first female mold core 233 through a plurality of one-jet channels 2341 by the one-jet injection unit 3 to obtain an inner ring body of the screen shell, wherein the first molding material is PC/ABS composite material;

(b) The first lower ejector plate 2314 and the first upper ejector plate 2315 are driven to move by an ejector rod 31 (which may be driven by the driving unit 24 or independently driven by a conventional hydraulic driving mechanism) by a certain distance (e.g. 0.48 mm), so that the cutter ejector 2319 moves synchronously to separate the inner ring body of the screen housing from a jet channel 2341 (actually from the material remained in the jet channel 2341); that is, the first lower ejector pin 2314 is driven by an ejector pin 31 penetrating through the lower fixing plate 2311, the second lower ejector pin 2312 and the second upper ejector pin 2313 and connected with the first lower ejector pin 2314, and the ejector pin 31 is generally an integral part of the injection unit 3; after the above-mentioned actions are completed, the ejector rod 31 is reset, and the first lower ejector plate 2314 and the first upper ejector plate 2315 are also reset (may be that the ejector rod 31 drives the first lower ejector plate 2314 and the first upper ejector plate 2315 to reset synchronously, or an elastic member such as a spring is sleeved on the second guide rod 2318 to realize resetting);

(c) Transferring the first female die core 233 to separate from the male die core 234, and matching the second female die core 233' with the male die core 234 (by using a dual injection molding machine system to drive the male die holder 21 and the female die holder 22 to separate, the conventional structure is adopted);

(d) Injecting a second molding material between the male mold core 234 and the second female mold core 233' through a plurality of two-jet channels 2343 by the two-jet injection unit 4 to obtain an outer ring body of the screen shell, wherein the second molding material is TPU material;

(e) The second lower ejector plate 2312 and the second upper ejector plate 2313 are driven to move by the two-shot ejector rod 41 (which can be driven by the driving unit 24 or independently driven by the conventional hydraulic driving mechanism), so that the upper fixing component 232 and the lower fixing component 231 are separated (although the upper fixing component 232 and the lower fixing component 231 are driven by the male die holder 21 and the female die holder 22 to be separated, the two-shot ejector rod 41 assists the upper fixing component 232 and the lower fixing component 231 to be pre-separated first, so that formed products can be prevented from being torn due to overlarge stress during separation, and the quality of the products can be effectively improved); that is, second lower ejector plate 2312 is driven by two-shot ejector pins 41 penetrating through lower fixing plate 2311 and connected to second lower ejector plate 2312. After the above-mentioned operations are completed, the two-shot ejector 41 resets the second lower ejector plate 2312 and the second upper ejector plate 2313 (usually, the one-shot ejector 31 drives the first lower ejector plate 2314 and the first upper ejector plate 2315 to reset synchronously).

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (6)

1. The utility model provides a notebook screen shell bicolor mould which characterized in that, it includes:

a lower fixing assembly (231), the lower fixing assembly (231) comprising a lower fixing plate (2311), a first lower ejector plate (2314) adjustably disposed on the lower fixing plate (2311), a first upper ejector plate (2315) mounted on the surface of the first lower ejector plate (2314), a second lower ejector plate (2312) adjustably disposed between the lower fixing plate (2311) and the first lower ejector plate (2314), a second upper ejector plate (2313) mounted on the surface of the second lower ejector plate (2312), a male die plate (2316) disposed at a distance from the first upper ejector plate (2315), a plurality of first guide rods (2317) penetrating into the male die plate (2316) and having one end mounted to the surface of the second lower ejector plate (2312), a plurality of second guide rods (2318) penetrating into the male die plate (2316) and having one end mounted to the surface of the first lower ejector plate (2314), and a concave receiving cavity (2319) penetrating into the male die plate (2316) and having one end mounted to the surface of the first lower ejector plate (2314);

the upper fixing assembly (232), the upper fixing assembly (232) comprises an upper fixing plate (2321), hot runner plates (2322, 2322') which are arranged on the surface of the upper fixing plate (2321) and face the lower fixing assembly (231), and a female die plate (2323) which is formed on the surface of the hot runner plate (2322), wherein a second accommodating cavity which is concave inwards and matched with the first accommodating cavity is formed on the outer surface of the female die plate (2323);

the male die core (234), the male die core (234) is set up in the said first holds the cavity;

a first female die core (233) and a second female die core (233 '), wherein the first female die core (233) and the second female die core (233') are alternatively arranged in the second accommodating cavity and are matched with the male die core (234); a plurality of injection channels (2341) are formed between the male die core (234) and the first female die core (233); the other end of the cutter thimble (2319) penetrates through the male die core (234) and corresponds to the injection channel (2341); a plurality of two-shot channels (2342) are formed between the male mold core (234) and the second female mold core (233').

2. The notebook screen housing bi-color die of claim 1, wherein: the upper fixing assembly (232) further includes a heat insulating plate (2324) formed on a surface of the upper fixing plate (2321) and facing away from the lower fixing assembly (231).

3. The notebook screen housing bi-color die of claim 1, wherein: the first female die core (233) is provided with a plurality of first through holes (2331) corresponding to the first injection channels (2341), and the second female die core (233 ') is provided with a plurality of second through holes (2331') corresponding to the second injection channels (2342); the hot runner plates (2322, 2322 ') are provided with a plurality of injection heads (23221, 23221 ') which are in one-to-one correspondence with the first through holes (2331) or the second through holes (2331 ').

4. The notebook screen housing bi-color die of claim 1, wherein: the lower fixing assembly (231) further comprises a plurality of limiting side plates (2310) formed on the surface of the lower fixing plate (2311) and surrounding a containing space, and the first lower ejector plate (2314) is adjustably arranged in the containing space.

5. The notebook screen housing bi-color die of claim 1, wherein: the adjustable distance between the first lower ejector plate (2314) and the second lower ejector plate (2312) is 0.45-0.48 mm independently of each other.

6. The notebook screen housing bi-color die of claim 1, wherein: the two injection channels (2342) are positioned on the outer ring of the one injection channel (2341).