CN211730026U

CN211730026U - Injection compression mold

Info

Publication number: CN211730026U
Application number: CN201922454960.6U
Authority: CN
Inventors: 付剑雄; 吴永生; 王明乙
Original assignee: Fujian Shishi Tongda Electrical Appliance Co Ltd
Current assignee: Fujian Shishi Tongda Electrical Appliance Co Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-10-23
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses an injection compression mould, including public mould and master model, the master model has from top to bottom the match plate, backup pad and the bottom plate that set gradually, is equipped with the perforation on the match plate, is equipped with the mold core in the perforation, and the upper end tip of mold core is shaping mould benevolence, is equipped with nitrogen spring in the backup pad, and nitrogen spring's output stretches out backup pad to the match plate in, the lower extreme and the backup pad fixed connection of mold core are equipped with reset spring between bottom plate and the backup pad. Compared with the prior art, the product in the molding space can be compressed by the mold core after injection molding, so that the thickness of the product can be compressed to the required thickness of 0.5-1.2mm, and an injection molding thin piece with the thickness of 0.5-1.2mm is molded; and meanwhile, the reset spring can be compressed, and the cooperation of the reset spring and the nitrogen spring is beneficial to demoulding of the product when the mold is opened, so that the product is easy to take out.

Description

Injection compression mold

Technical Field

The utility model relates to a cell-phone accessory production facility, in particular to a compression mold that moulds plastics that is used for lid direct injection moulding behind cell-phone.

Background

With the upgrading of electronic devices, consumers have to gradually increase the requirements for the appearance of the mobile phone, particularly for the rear cover, in addition to the requirements for the functions of the electronic devices (particularly the mobile phone), and the mobile phone needs to have a good hand feeling and a thin structure. Therefore, the existing mobile phone rear cover is made into a thinner injection molding product and an aluminum product, the aluminum product has a fixing noise property on the signal of the mobile phone, and the integrity of the mobile phone rear cover is poor in order to ensure that the signal of the aluminum mobile phone can be used as an antenna slot; therefore, on the premise that the existing young people pursue mobile phone perfection, the injection molding mobile phone shell is commonly used, however, if the injection molding mobile phone shell is too thin, the material of the injection molding cavity cannot be completely filled, so that the molding failure is caused, and therefore, the existing injection molding mobile phone shell cannot be molded into a molded part with the thickness of 0.5-1.2 mm.

Accordingly, the present inventors have made extensive studies on the above problems, and as a result, the present invention has been made.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an injection compression mold of lid behind the cell-phone of moulding plastics that can take shape out its thickness and be 0.5-1.2 mm.

In order to achieve the above object, the solution of the present invention is as follows:

the injection compression mold comprises a male mold and a female mold matched with the male mold, wherein one surface of the male mold matched with the female mold is a matched surface, the matched surface of the male mold is provided with a formed forming concave cavity, the matched surface of the female mold is provided with a forming mold core extending into the formed concave cavity, a forming space matched with the rear cover of the mobile phone is arranged between the forming concave cavity and the forming mold core, and the matched direction of the female mold and the male mold is taken as the vertical direction; the female die is provided with a die closing plate, a supporting plate and a bottom plate which are sequentially arranged from top to bottom, the die closing plate is provided with a through hole which penetrates through the die closing plate in the vertical direction, a die core is arranged in the through hole, the upper end part of the die core extends upwards out of the through hole, the upper end part of the die core is matched with the shape of a rear cover of the mobile phone, the upper end part of the die core is the forming die core, a nitrogen spring is arranged in the supporting plate, the output end of the nitrogen spring extends out of the supporting plate to the inside of the die closing plate, the lower end of the die core is fixedly connected with.

The inner side wall of the upper end of the through hole is downwards provided with a first step and a second step below the first step, the first step is positioned on the outer side of the second step, the part of the inner side wall of the through hole, which is positioned below the second step, is tightly matched with the mold core sleeve, and the space between the first step and the mold core and the space between the mold core and the molding cavity form the molding space.

The upper top surface of the die closing plate is recessed with two through holes which are arranged side by side left and right, the die core and the forming cavity are correspondingly provided with two through holes, the part of the top surface of the die closing plate, which is positioned between the two through holes, is recessed with a flow channel, and two ends of the flow channel are respectively and correspondingly communicated with the two through holes.

The number of the nitrogen springs is four, and the four nitrogen springs are distributed in two rows and two lines.

The top surface of the supporting plate is recessed with an accommodating cavity, the nitrogen spring is vertically arranged in the accommodating cavity, the bottom surface of the supporting plate is locked with a locking piece which extends into the accommodating cavity and is locked in the nitrogen spring, the bottom surface of the die closing plate is recessed upwards corresponding to the accommodating cavity and is provided with a recessed cavity, and the output end of the nitrogen spring extends into the recessed cavity and is fixedly matched with the die closing plate.

The lower bottom surface of the combined template is provided with an expanding cavity at the position of the through hole in an upward concave manner, the through hole is positioned in the range of the expanding cavity, a core fixing plate which is attached to the supporting plate and locked together is embedded in the expanding cavity, and the bottom surface of the core is locked together with the top surface of the core fixing plate.

The outer side wall of the combined template is locked with a dial indicator, the detection end of the dial indicator is arranged downwards, the outer side wall of the supporting plate is locked with a fixed block which is positioned right below the dial indicator, and the detection end of the dial indicator is fixedly connected with the fixed block.

The square iron blocks are arranged between the bottom plate and the supporting plate, the two square iron blocks are arranged at left and right intervals, the square iron blocks are matched with the bottom plate in a locking mode, the return spring is located between the two square iron blocks and tensioned between the supporting plate and the bottom plate, and the supporting plate is spaced from the square iron blocks through the return spring.

After the technical scheme is adopted, the utility model discloses an injection compression mold, during the injection molding, the nitrogen spring starts, the nitrogen spring upwards jacks up the compound die board, with public template compound die, this moment close template and backup pad and receive nitrogen spring and bounce off 0.8-0.9mm relatively, the top surface of mold core correspondingly bounces off 0.8-0.9mm with the bottom of the chamber of shaping concave cavity, thus, the degree of depth of shaping space becomes big, make the material can fill up whole space, the product gross thickness of moulding plastics in the shaping space at this moment is 1.5-1.8mm, injection molding machine promotes the bottom plate and moves to public mould direction after the completion of moulding plastics, the mold core correspondingly moves upwards at this moment and stretches into in the shaping space again, the product in the shaping space at this moment is compressed by the mold core, make the thickness of product can be compressed to required 0.5-1.2mm thickness, the thin piece of moulding plastics that its thickness is 0.5-1.2mm is formed; meanwhile, the return spring can be compressed, so that the cooperation of the return spring and the nitrogen spring is beneficial to demolding of the product when the mold is opened, and the product is easy to take out.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

fig. 3 is a perspective view of the female mold of the present invention.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.

The utility model discloses an injection compression mold, as shown in fig. 1-3, including public mould 1 and with public master model 2 of mould compound die, public mould 1 is the fitting surface with the one side of 2 compound dies of master model, use the compound die direction of public mould and master model to be upper and lower direction, the fitting surface of public mould 1 (bottom surface down promptly) has fashioned shaping cavity, the fitting surface of master model 2 (top surface is gone up promptly) has the shaping mould benevolence that stretches into in the shaping cavity, have between shaping cavity and the shaping mould benevolence and cover identical shaping space behind the cell-phone, this public mould is the well-known technique in the field of moulding plastics now with the shaping mode of master model, no longer repeated here.

The utility model discloses an improvement part lies in: the female die is provided with a die plate 21, a support plate 22 and a bottom plate 23 which are sequentially arranged from top to bottom, the die plate 21 is provided with a through hole 211 which penetrates through the die plate 21 in the up-down direction, the through hole 211 is a square through hole, a die core 24 is arranged in the through hole 211, the upper end of the die core 24 extends upwards out of the through hole, the upper end of the die core 24 is matched with the rear cover of the mobile phone, preferably, the die core 24 is correspondingly in a rectangular block structure, the outline of the upper end of the die core 24 is matched with the outline of the rear cover of the mobile phone to be formed, the upper end of the die core 24 is the forming die core, the inner side wall of the upper end of the through hole 211 is recessed with a first step 100 and a second step 200 which is positioned below the first step, the second step is positioned between the first step and the through hole, namely, the top surface of the die plate 21 is positioned at the through hole, therefore, a stepped structure with a first step and a second step is formed at the cavity bottom of the concave cavity, the part, below the second step, of the inner side wall of the through hole 211 is tightly matched with the mold core 24 in a sleeved mode, and the space enclosed between the first step and the mold core and the space enclosed between the mold core and the forming concave cavity form the forming space.

The nitrogen spring 25 is arranged in the supporting plate 22, and the output end of the nitrogen spring 25 extends out of the supporting plate 22 to the inside of the mold closing plate 21, preferably, a containing concave cavity is formed in the top surface of the supporting plate 22, the nitrogen spring 25 is vertically arranged in the containing concave cavity, the nitrogen spring 25 is a known product, a locking piece 26 which extends into the containing concave cavity to be locked in the nitrogen spring is locked on the bottom surface of the supporting plate 22, the locking piece 26 is a locking bolt, a lower concave cavity is formed in the position, corresponding to the containing concave cavity, of the bottom surface of the mold closing plate 21 in an upward concave mode, the output end of the nitrogen spring 25 extends into the lower concave cavity to be fixedly matched with the mold closing plate, namely, an inherent mounting plate 251 is sleeved outside the output end of the nitrogen spring 25, the mounting plate.

The lower end of the mold core 24 is fixedly connected with the supporting plate 22, preferably, the lower bottom surface of the mold combining plate 21 is provided with an expanding cavity which is positioned at the through hole 211 and is upwards concave, the through hole is positioned in the range of the expanding cavity, a core fixing plate (not shown in the figure) which is attached to the supporting plate and locked together is embedded in the expanding cavity, the bottom surface of the mold core 24 is locked together with the top surface of the core fixing plate, and the movement of the mold core is regulated and controlled to a certain degree by the matching of the expanding cavity and the core fixing plate.

The bottom plate 23 is provided with a return spring 27, and the return spring 27 is fixedly connected with the support plate 22; preferably, a square iron block 27 is arranged between the bottom plate 23 and the supporting plate 22, the square iron block 27 is provided with two square iron blocks which are arranged at intervals left and right, the square iron block 27 is in locking fit with the bottom plate 23, a return spring 27 is arranged between the two square iron blocks and tensioned between the supporting plate and the bottom plate, preferably, a guide rod 221 which extends downwards is arranged on the bottom surface of the supporting plate 22, the return spring 27 is sleeved outside the guide rod 221, the return spring 27 extends into the supporting plate and is fixedly matched with the supporting plate, a mounting plate 28 is clamped between the two square iron blocks, a guide column 221 is sleeved in the mounting plate 28, the bottom of the return spring 27 is contacted with the top surface of the mounting plate 28, and a certain distance is reserved between the supporting plate 22 and the square iron block 27 under the elastic force of the return spring 27; thus, when the injection molding machine applies upward force to the bottom plate 23, the bottom plate 23 moves upward to move the return spring 27 to compress the return spring to a certain extent, the iron block 27 is attached to and matched with the support plate 22 correspondingly, the bottom plate 23 pushes the support plate 22 upward when moving upward again, and the mold core 24 is moved upward by the upward movement of the support plate 22 to extrude the product in the molding cavity.

In this is novel, the top surface lock solid of square iron piece has guide post (not drawn in the picture), and 1 internal fixation of public template has the uide bushing (not drawn in the picture), and the lower extreme of uide bushing stretches into in compound die plate 21, and the guide post passes backup pad 22 to the uide bushing tight fit in, like this, can play the guide effect with the master model removal by public mould.

The utility model discloses an injection compression mold, during injection molding, nitrogen spring 25 starts, the output of nitrogen spring 25 upwards stretches out and closes template 21 jack-up, with the compound die of public template 1, and close template 21 and backup pad 22 non-fixed connection, backup pad 22 is fixed motionless, the rising that closes template 21 promptly will separate with backup pad 22, form 0.8-0.9 mm's interval, mold core 24 and backup pad 22 fixed connection, mold core 24 is corresponding different, the top surface of mold core 24 and the corresponding 0.8-0.9 mm's interval of popping open of the chamber bottom of shaping concave cavity, in this way, the degree of depth grow of shaping space, make the material can fill up whole space, solved the problem that the degree of depth of traditional shaping space is thin can't flow through whole space, the product gross thickness of moulding plastics in the shaping space is at this moment 1.5-1.8mm, after the completion of injection molding machine promotes bottom plate 23 and moves to public mould 1 direction, at the moment, the mold core 24 correspondingly moves upwards, the forming mold core of the mold core 24 extends into the forming space again, and the product in the forming space is compressed by the mold core 24, so that the thickness of the product can be compressed to the required thickness of 0.5-1.2mm, and an injection molding thin piece with the thickness of 0.5-1.2mm is formed; and in the compression process, due to the arrangement of the second step, extruded materials can overflow into the space between the second step and the mold core, so that the edge of a formed part is very thin, the forming quality of the injection-molded thin part is ensured, and in addition, the return spring 27 can also be compressed, so that the cooperation of the return spring and the nitrogen spring is beneficial to the demolding of the product when the mold is opened, the product is easy to take out, in addition, the whole structure is simple and easy, the processing and manufacturing are easy, and the compression mold can be used for injection molding of different injection-molded parts.

This is novel, close the last top surface of template 21 and recessed two perforation 211 side by side about having, mold core 24 is provided with two with the shaping cavity is corresponding, closes the top surface of template 21 and is located two positions between perforating and recessed have runner 212, and the both ends of runner correspond respectively and are linked together with two perforations, and two formed parts can be shaped out like this, and work efficiency is high.

This is novel, nitrogen spring 25 is excellent to be provided with four, and four nitrogen springs are two mode distributions that arrange two and be listed as, and four nitrogen springs 25's setting can provide the stability of whole translation, reinforcing shaping quality.

In the novel die plate, a dial indicator 3 is locked on the outer side wall of the die plate 21, the detection end of the dial indicator 3 is arranged downwards, a fixed block 4 which is positioned right below the dial indicator is locked on the outer side wall of the supporting plate 22, and the detection end of the dial indicator 4 is fixedly connected with the fixed block 4; like this, can measure through this percentage table 3 and close the displacement of template and backup pad 22 to can conveniently close the relative displacement of template and backup pad and adjust, make the shaping of product obtain accurate regulation and control.

The above embodiments and drawings do not limit the shape of the method and the fixture of the present invention, and any suitable changes or modifications made by those skilled in the art should be considered as not departing from the scope of the present invention.

Claims

1. The injection compression mold comprises a male mold and a female mold matched with the male mold, wherein one surface of the male mold matched with the female mold is a matched surface, the matched surface of the male mold is provided with a formed forming concave cavity, the matched surface of the female mold is provided with a forming mold core extending into the formed concave cavity, a forming space matched with the rear cover of the mobile phone is arranged between the forming concave cavity and the forming mold core, and the matched direction of the female mold and the male mold is taken as the vertical direction; the mobile phone back cover forming die is characterized in that the female die is provided with a die plate, a supporting plate and a bottom plate which are sequentially arranged from top to bottom, a through hole penetrating along the up-down direction of the die plate is formed in the die plate, a die core with the upper end part extending upwards out of the through hole is arranged in the through hole, the upper end part of the die core is matched with the shape of the mobile phone back cover, the upper end part of the die core is the forming die core, a nitrogen spring is arranged in the supporting plate, the output end of the nitrogen spring extends out of the supporting plate to the inside of the die plate, the lower end of the die core is fixedly connected with the supporting.

2. An injection compression mold as claimed in claim 1, wherein: the inner side wall of the upper end of the through hole is downwards provided with a first step and a second step below the first step, the first step is positioned on the outer side of the second step, the part of the inner side wall of the through hole, which is positioned below the second step, is tightly matched with the mold core sleeve, and the space between the first step and the mold core and the space between the mold core and the molding cavity form the molding space.

3. An injection compression mold as claimed in claim 2, wherein: the upper top surface of the die closing plate is recessed with two through holes which are arranged side by side left and right, the die core and the forming cavity are correspondingly provided with two through holes, the part of the top surface of the die closing plate, which is positioned between the two through holes, is recessed with a flow channel, and two ends of the flow channel are respectively and correspondingly communicated with the two through holes.

4. An injection compression mold as claimed in claim 1, wherein: the number of the nitrogen springs is four, and the four nitrogen springs are distributed in two rows and two lines.

5. An injection compression mould according to claim 1 or 4, characterized in that: the top surface of the supporting plate is recessed with an accommodating cavity, the nitrogen spring is vertically arranged in the accommodating cavity, the bottom surface of the supporting plate is locked with a locking piece which extends into the accommodating cavity and is locked in the nitrogen spring, the bottom surface of the die closing plate is recessed upwards corresponding to the accommodating cavity and is provided with a recessed cavity, and the output end of the nitrogen spring extends into the recessed cavity and is fixedly matched with the die closing plate.

6. An injection compression mold as claimed in claim 1, wherein: the lower bottom surface of the combined template is provided with an expanding cavity at the position of the through hole in an upward concave manner, the through hole is positioned in the range of the expanding cavity, a core fixing plate which is attached to the supporting plate and locked together is embedded in the expanding cavity, and the bottom surface of the core is locked together with the top surface of the core fixing plate.

7. An injection compression mold as claimed in claim 1, wherein: the outer side wall of the combined template is locked with a dial indicator, the detection end of the dial indicator is arranged downwards, the outer side wall of the supporting plate is locked with a fixed block which is positioned right below the dial indicator, and the detection end of the dial indicator is fixedly connected with the fixed block.

8. An injection compression mold as claimed in claim 1, wherein: the square iron blocks are arranged between the bottom plate and the supporting plate, the two square iron blocks are arranged at left and right intervals, the square iron blocks are matched with the bottom plate in a locking mode, the return spring is located between the two square iron blocks and tensioned between the supporting plate and the bottom plate, and the supporting plate is spaced from the square iron blocks through the return spring.