CN217123850U

CN217123850U - Injection mold for plastic shell

Info

Publication number: CN217123850U
Application number: CN202122216559.6U
Authority: CN
Inventors: 沈良银
Original assignee: Anhui Dongyin Technology Co ltd
Current assignee: Anhui Dongyin Technology Co ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2022-08-05
Anticipated expiration: 2031-09-14

Abstract

The utility model relates to a be used for moulding shell injection mold, including bottom plate, symmetric connection at a plurality of supporting shoe of bottom plate upper end, locate the removal stripper plate between a plurality of supporting shoe, connect at a plurality of telescopic link, guide arm and drawing of patterns complementary unit of removal stripper plate upper end, connect at the lower bolster of supporting shoe upper end, locate the cope match-plate pattern directly over the lower bolster, connect the well connecting plate in cope match-plate pattern upper end and connect the roof in the connecting plate upper end, the upper end middle part position of lower bolster is connected with module under a plurality of. This be used for moulding shell injection mold, when drawing of patterns, adopt the supplementary demoulding mechanism who has certain buffering effect to carry out the drawing of patterns, when the cohesion between injection molding and module is greater than the cushion force, supplementary demoulding mechanism self produces flexible and slow increase dynamics, until can break away from injection molding and module, can effectual reduction lead to the injection molding to warp or damage because of the release force is too big.

Description

Injection mold for plastic shell

Technical Field

The utility model belongs to the injection mold field, concretely relates to be used for moulding shell injection mold.

Background

Injection molding is a method for producing and molding industrial products. The products are generally produced by rubber injection molding and plastic injection molding. The injection molding can be classified into injection molding and die casting.

An injection molding machine (an injection machine or an injection molding machine for short) is a main molding device for making thermoplastic plastics or thermosetting materials into plastic products with various shapes by using a plastic molding die, and the injection molding is realized by the injection molding machine and the die.

At present common injection mold is when carrying out the drawing of patterns, adopt the bottom to exert the power of ascending fixed value more, promote the stripper plate and the last stripper rod of connecting slowly-moving upwards, until breaking away from between injection molding and the module, but present common mould adopts the stripper rod of fixed length and solid setting more, when the dynamics of exerting is in fixed value, because of the cohesion difference between injection molding and the module, can not ensure the jack-up that can both be stable with each injection molding, the machine of applying force is exerted to the bottom of needs continuous adjustment, it is comparatively loaded down with trivial details, and if exert the power adjustment too big, cause the damage to the injection molding easily, if deformation or damaged condition appear.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple structure, reasonable in design's a mould injection mold is moulded in order to solve above-mentioned problem just.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

an injection mold for plastic shells comprises a bottom plate, a plurality of supporting blocks symmetrically connected to the upper end of the bottom plate, a movable stripper plate arranged among the supporting blocks, a plurality of telescopic rods, a guide rod and a demolding auxiliary mechanism connected to the upper end of the movable stripper plate, a lower template connected to the upper end of the supporting blocks, an upper template arranged right above the lower template, a middle connecting plate connected to the upper end of the upper template, and a top plate connected to the upper end of the middle connecting plate, wherein the middle position of the upper end of the lower template is connected with a plurality of lower modules, the middle position of the lower end of the upper template is connected with a plurality of upper modules matched with the lower modules, an injection cavity is formed between the upper modules and the lower modules, the middle position of the top plate is provided with an injection port, the lower end of the top plate is symmetrically connected with a plurality of conveying pipes, and one end of each conveying pipe sequentially penetrates through the middle connecting plate, the upper template and the upper modules and extends to the upper end face of the lower modules, the upper end face of the lower module is provided with a plurality of material conveying grooves matched with the conveying pipe, the lower end of the lower template is connected with the upper end of the telescopic rod, the upper end of the guide rod penetrates through the lower template and extends into the lower module, and the upper end of the demolding auxiliary mechanism penetrates through the lower template and the lower module in sequence and extends into the injection molding cavity.

As the utility model discloses a further optimization scheme, drawing of patterns complementary unit is including connecting the loop bar on the removal stripper plate, locating interior spacing dish in the loop bar, connecting including slide bar, the connection of spacing dish upper end including the slide bar upper end and connect including spacing dish under terminal surface and the loop bar lower extreme inner wall spring between, the upper boom runs through lower bolster, lower module in proper order and extends to in the cavity of moulding plastics.

As the utility model discloses a further optimization scheme, the position that the inner wall of loop bar is close to the lower extreme is equipped with a plurality of inlet port and venthole, and the venthole is located the below of inlet port.

As the utility model discloses a further optimization scheme, the handing-over department of inlet port and loop bar inner wall is equipped with attached groove, is connected with the plastic piece on the attached groove, the plastic piece only has one end to be connected with attached groove, and the plastic piece covers the inlet port.

As the utility model discloses a further optimization scheme, the lower extreme middle part position of bottom plate is equipped with the perforation, be equipped with first cooling body on the lower bolster, be equipped with second cooling body on the cope match-plate pattern, first cooling body and second cooling body all include a plurality of cooling tube, and a plurality of cooling tube locates down in module and the cope match-plate pattern respectively.

The beneficial effects of the utility model reside in that:

1) the utility model adopts a plurality of demoulding auxiliary mechanisms to exert demoulding force on the injection molding part at the same time, and the demoulding auxiliary mechanisms have certain buffering effect, under the condition of unchanging the applied force, the movable demoulding plate moves upwards continuously and drives the loop bar to move upwards, the loop bar compresses the internal spring after moving, and along with the opposite movement between the inner limiting disc and the loop bar, the air in the loop bar is discharged slowly from the air outlet hole, the elastic potential energy after the spring compression is gradually increased, the effect of slowly increasing the demoulding force can be achieved, until the demoulding force reaches a proper value, the injection molding part can be separated from the module gradually, because the binding force between different injection molding parts and the module is different, the mechanism can effectively reduce the damage to the injection molding part caused by the demoulding bar due to overlarge output power, and simultaneously reduces the output power adjusting process of the force application machine, the whole demolding process is more stable;

2) the utility model discloses a loop bar in drawing of patterns complementary unit is provided with inlet port and venthole, and inlet port department covers has the plastic piece, when the loop bar is in the exhaust process, only can exhaust from venthole department, can make the mutual moving process between interior spacing dish and the loop bar be in a stable state, after the drawing of patterns is finished, the spring rebounds, the position between interior spacing dish and the loop bar returns initial condition, this process loop bar internal gas pressure increase and inhale from inlet port and venthole simultaneously, can reach the effect of quick playback;

3) the utility model discloses simple structure, stability is high, reasonable in design, the realization of being convenient for.

Drawings

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

fig. 2 is a schematic sectional structure of the present invention;

FIG. 3 is a view of the lower mold plate and the lower mold block of the present invention;

FIG. 4 is a schematic structural view of the demolding auxiliary mechanism of the present invention;

fig. 5 is an enlarged view of the present invention at a in fig. 4.

In the figure: 1. a base plate; 101. perforating; 2. moving the stripper plate; 201. a telescopic rod; 202. a guide bar; 3. a demolding auxiliary mechanism; 301. a rod is arranged; 302. a slide bar; 303. an inner limiting disc; 304. a loop bar; 3040. an air inlet; 3041. an air outlet; 3042. plastic sheets; 305. a spring; 4. a support block; 5. a lower template; 501. a lower module; 502. a material conveying groove; 6. mounting a template; 601. an upper module; 7. a middle connecting plate; 8. a top plate; 801. a material injection port; 802. a delivery pipe; 9. a first cooling mechanism; 10. a second cooling mechanism; 1001. and (6) cooling the pipeline.

Detailed Description

The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention; in the description of the present invention, the meaning of "a plurality" or "a plurality" is two or more unless otherwise stated.

Example 1

As shown in fig. 1-5, an injection mold for plastic shells comprises a bottom plate 1, a plurality of supporting blocks 4 symmetrically connected to the upper end of the bottom plate 1, a movable stripper plate 2 disposed between the supporting blocks 4, a plurality of telescopic rods 201 connected to the upper end of the movable stripper plate 2, a guide rod 202 and a demolding auxiliary mechanism 3, a lower template 5 connected to the upper end of the supporting blocks 4, an upper template 6 disposed right above the lower template 5, a middle connecting plate 7 connected to the upper end of the upper template 6 and a top plate 8 connected to the upper end of the middle connecting plate 7, wherein the middle position of the upper end of the lower template 5 is connected with a plurality of lower modules 501, the middle position of the lower end of the upper template 6 is connected with a plurality of upper modules 601 matched with the lower modules 501, an injection cavity is formed between the upper modules 601 and the lower modules 501, the middle position of the top plate 8 is provided with a material injection port 801, and the lower end of the top plate 8 is symmetrically connected with a plurality of conveying pipes 802, the one end of conveyer pipe 802 runs through well connecting plate 7 in proper order, cope match-plate pattern 6 and last module 601 and extend to the up end department of module 501 down, the up end of module 501 is equipped with a plurality of and conveyer pipe 802 matched with defeated silo 502 down, the lower extreme of lower bolster 5 is connected with the upper end of telescopic link 201, the upper end of guide arm 202 runs through lower bolster 5 and extends to module 501 down, lower bolster 5 is run through in proper order to the upper end of drawing of patterns complementary unit 3, lower module 501 extends to in the cavity of moulding plastics.

The lower end middle position of bottom plate 1 is equipped with perforation 101, is equipped with first cooling body 9 on the lower bolster 5, is equipped with second cooling body 10 on the cope match-plate pattern 6, and first cooling body 9 and second cooling body 10 all include a plurality of cooling tube 1001, and a plurality of cooling tube 1001 locates respectively in module 501 and the cope match-plate pattern 601 down. The through hole 101 is used for a force application device to penetrate through the through hole 101 and apply a fixed value of force to the movable stripper plate 2, the first cooling mechanism 9 and the second cooling mechanism 10 are both used for rapidly cooling the injection molded part, and the specific distribution of the cooling pipes 1001 can be adjusted according to the actual design requirement, which is not described herein again for the prior art.

When moulding plastics, arrange whole mould in the injection molding machine on, injection molding machine oppression roof 8 and order about cope match-plate pattern 6 and move down and laminate with lower bolster 5, form the cavity of moulding plastics between lower module 501 and the cope match-plate pattern 601 this moment, the injection molding machine will mould plastics the raw materials and pour into the raw materials of moulding plastics through sprue 801 department and carry in to the cavity of moulding plastics through conveyer pipe 802, then cool off the injection molding fast through cooling body, after the injection molding cooling forming, drive cope match-plate pattern 6 and lower bolster 5 separation, then the process of drawing patterns.

When demoulding, the demoulding auxiliary mechanism 3 is adopted to demould the injection molding part in an adaptive way.

The demolding auxiliary mechanism 3 comprises a loop bar 304 connected to the movable demolding plate 2, an inner limiting disc 303 arranged in the loop bar 304, a sliding rod 302 connected to the upper end of the inner limiting disc 303, an upper rod 301 connected to the upper end of the sliding rod 302, and a spring 305 connected between the lower end face of the inner limiting disc 303 and the inner wall of the lower end of the loop bar 304, wherein the upper rod 301 penetrates through the lower mold plate 5 and the lower mold block 501 in sequence and extends into the injection molding cavity.

A plurality of air inlet holes 3040 and air outlet holes 3041 are arranged on the inner wall of the sleeve rod 304 near the lower end, and the air outlet holes 3041 are positioned below the air inlet holes 3040; an attachment groove is formed at the joint of the air inlet 3040 and the inner wall of the sleeve rod 304, a plastic sheet 3042 is connected to the attachment groove, only one end of the plastic sheet 3042 is connected to the attachment groove, and the plastic sheet 3042 covers the air inlet 3040.

When demoulding is carried out, a plurality of demoulding auxiliary mechanisms 3 are adopted to simultaneously exert demoulding force on the injection molding part, the demoulding auxiliary mechanisms 3 have certain buffering effect, under the condition that the exerting force is not changed, the movable demoulding plate 2 continuously moves upwards and drives the loop bar 304 to move upwards, the loop bar 304 compresses the spring 305 inside after moving, and along with the opposite movement between the inner limiting disc 303 and the loop bar 304, air in the loop bar 304 is slowly discharged from the air outlet 3041, the effect of slowly increasing the demoulding force can be achieved because the elastic potential energy after the spring 305 is compressed is gradually increased, the injection molding part can be gradually separated from the modules until the demoulding force reaches a proper value, and the damage of the demoulding bar to the injection molding part caused by overlarge output power can be effectively reduced by adopting the mechanisms because the binding force between different injection molding parts and modules is different, meanwhile, the output power adjustment process of the force application machine is reduced, and the whole demolding process is more stable;

wherein, the sleeve rod 304 in the auxiliary demoulding mechanism 3 is provided with an air inlet 3040 and an air outlet 3041, the air inlet 3040 is covered with a plastic sheet 3042, when the sleeve rod 304 is in the air exhausting process, the air can be exhausted only from the air outlet 3041, so that the mutual moving process between the inner limiting disc 303 and the sleeve rod 304 is in a stable state, after the demoulding is finished, the spring 305 rebounds, the position between the inner limiting disc 303 and the sleeve rod 304 returns to the initial state, the air pressure in the sleeve rod 304 is increased and the air is sucked from the air inlet 3040 and the air outlet 3041 at the same time, and the effect of fast returning can be achieved.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. The utility model provides a be used for moulding shell injection mold which characterized in that: comprises a bottom plate (1), a plurality of supporting blocks (4) symmetrically connected at the upper end of the bottom plate (1), a movable stripper plate (2) arranged among the supporting blocks (4), a plurality of telescopic rods (201) connected at the upper end of the movable stripper plate (2), a guide rod (202) and a demoulding auxiliary mechanism (3), a lower template (5) connected at the upper end of the supporting blocks (4), an upper template (6) arranged right above the lower template (5), a middle connecting plate (7) connected at the upper end of the upper template (6) and a top plate (8) connected at the upper end of the middle connecting plate (7), wherein the middle position of the upper end of the lower template (5) is connected with a plurality of lower modules (501), the middle position of the lower end of the upper template (6) is connected with a plurality of upper modules (601) matched with the lower modules (501), and an injection molding cavity is formed between the upper modules (601) and the lower modules (501), the middle part position of roof (8) is equipped with sprue (801), and the lower extreme symmetric connection of roof (8) has a plurality of conveyer pipe (802), and the one end of conveyer pipe (802) runs through well connecting plate (7), cope match-plate pattern (6) and last module (601) in proper order and extends to the up end department of lower module (501), the up end of lower module (501) is equipped with a plurality of and conveyer pipe (802) matched with defeated material groove (502), the lower extreme of lower bolster (5) is connected with the upper end of telescopic link (201), the upper end of guide arm (202) runs through in lower bolster (5) and extends to lower module (501), the upper end of drawing of patterns complementary unit (3) runs through lower bolster (5), lower module (501) in proper order and extends to the cavity of moulding plastics.

2. The plastic case injection mold according to claim 1, wherein: demoulding complementary unit (3) including connecting loop bar (304) on removing stripper plate (2), locating interior spacing dish (303) in loop bar (304), connecting slide bar (302) including spacing dish (303) upper end, connecting upper boom (301) and connecting spring (305) between terminal surface and loop bar (304) lower extreme inner wall under interior spacing dish (303), upper boom (301) run through lower bolster (5), lower module (501) in proper order and extend to the cavity of moulding plastics.

3. The injection mold for plastic cases as recited in claim 2, wherein: the inner wall of the sleeve rod (304) is provided with a plurality of air inlet holes (3040) and air outlet holes (3041) at positions close to the lower end, and the air outlet holes (3041) are positioned below the air inlet holes (3040).

4. The injection mold for plastic cases of claim 3, wherein: an attaching groove is formed in the joint of the air inlet hole (3040) and the inner wall of the sleeve rod (304), a plastic sheet (3042) is connected to the attaching groove, only one end of the plastic sheet (3042) is connected with the attaching groove, and the plastic sheet (3042) covers the air inlet hole (3040).

5. The plastic case injection mold according to claim 1, wherein: the lower end middle position of bottom plate (1) is equipped with perforation (101), be equipped with first cooling body (9) on lower bolster (5), be equipped with second cooling body (10) on cope match-plate pattern (6), first cooling body (9) and second cooling body (10) all include a plurality of cooling tube (1001), and a plurality of cooling tube (1001) are located respectively in module (501) and the last module (601).