CN219727086U

CN219727086U - Thin-wall shell mould

Info

Publication number: CN219727086U
Application number: CN202223137261.7U
Authority: CN
Inventors: 黄佰胜; 陈玉麟; 林可贵; 余志强
Original assignee: Shenzhen Nanhe Jianyi Mould Co ltd
Current assignee: Shenzhen Nanhe Jianyi Mould Co ltd
Priority date: 2022-11-24
Filing date: 2022-11-24
Publication date: 2023-09-22
Anticipated expiration: 2032-11-24

Abstract

The utility model provides a thin-wall shell mold, which comprises an upper mold and a lower mold, wherein the upper mold comprises an upper mold core assembly, the lower mold comprises a lower mold core assembly, the upper mold core assembly comprises an upper mold core and a cover plate, a cavity penetrating to the top of the upper mold core is arranged on the upper mold core, the cover plate is arranged on the top of the upper mold core, the cover plate covers the top of the cavity, and the side wall of the cavity is inclined towards the middle of the cavity; the lower die core assembly comprises a lower die core and a fixing plate, a die core is arranged on the lower die core, a sleeve joint hole is formed in the fixing plate, the fixing plate is sleeved on the lower die core through the sleeve joint hole, and the side wall of the die core is inclined towards the middle of the die core. The distance between the thin-wall shell product and the cavity and the core can be rapidly increased during demolding, the adhesion time is shortened, the adhesion is avoided, the demolding difficulty of the thin-wall shell is reduced, scratches on the inner surface and the outer surface are reduced, the transmittance is improved, and the transparent effect is enhanced.

Description

Thin-wall shell mould

Technical Field

The utility model relates to the field of mold equipment, in particular to a thin-wall shell mold.

Background

Many medications are packaged in a pill form, and are particularly suited for use with transparent medication boxes in which stacks of pills are placed while allowing access to the transparent medication and view of the pills inside. The whole medicine box is flat cuboid and is high and thin. The medicine box is a thin-wall shell, and the thin-wall shell has a larger vertical surface due to the characteristics of flatness, height, thinness and the like during injection molding.

Disclosure of Invention

In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a thin-wall shell mold and an injection mold, so as to solve the technical problem of high demolding difficulty of the thin-wall shell in the prior art.

One of the purposes of the utility model is realized by adopting the following technical scheme:

the thin-wall shell mold comprises an upper mold and a lower mold, wherein the upper mold comprises an upper mold core assembly, the lower mold comprises a lower mold core assembly, the upper mold core assembly comprises an upper mold core and a cover plate, a cavity penetrating to the top of the upper mold core is formed in the upper mold core, the cover plate is arranged at the top of the upper mold core, the cover plate covers the top of the cavity, and the side wall of the cavity is inclined towards the middle of the cavity;

the lower die core assembly comprises a lower die core and a fixing plate, a die core is arranged on the lower die core, a sleeve joint hole is formed in the fixing plate, the fixing plate is sleeved on the lower die core through the sleeve joint hole, and the side wall of the die core is inclined towards the middle of the die core.

Optionally, a cavity is arranged in the lower die core, and a vent hole communicated with the cavity is arranged at the top of the core;

the lower die is provided with a demoulding assembly, the demoulding assembly comprises a first gas pipeline, and the first gas pipeline stretches into the cavity.

Optionally, the demolding assembly further comprises an air outlet pipe communicated with the first air pipeline, the air outlet pipe stretches into the vent hole and is used for blocking plastic flow, an air outlet gap is formed between the upper end of the air outlet pipe and the vent hole, the upper end of the air outlet pipe is closed, and a side hole is formed in the side wall of the upper end of the air outlet pipe.

Optionally, the cavity is slot hole form, the drawing of patterns subassembly still includes the stay tube, the stay tube set up in the cavity, the upper end butt of stay tube the lower extreme of outlet duct, the stay tube with first gas piping connection.

Optionally, an installation groove for installing the upper die core assembly is formed in the lower die, a lower sealing groove which is arranged corresponding to the cavity is formed in the bottom of the installation groove, and a lower sealing ring is arranged in the lower sealing groove;

the lower extreme of stay tube is equipped with the clamping ring, the clamping ring supports and presses the lower sealing washer.

Optionally, the lower end of the air outlet pipe extends into the cavity, and the lower end of the air outlet pipe is provided with a circular ring protruding out of the outer circumferential surface of the air outlet pipe;

the demolding assembly further comprises an elastic piece, the elastic piece is located above the circular ring, the lower end of the elastic piece abuts against the circular ring, and the upper end of the elastic piece abuts against the inner wall of the top of the cavity.

Optionally, the upper die core assembly further comprises a second gas pipeline, and the second gas pipeline part extends into the cover plate;

the bottom of the cover plate is provided with a ventilation groove which is arranged around the cavity, and the ventilation groove is communicated with the second gas pipeline;

the bottom of apron has the shaping face, the shaping face is located the top of die cavity, the bottom of apron still is equipped with the ventilation clearance, the ventilation clearance follow the ventilation groove extends to the shaping face.

Optionally, the thin-wall shell mold further comprises a lower cooling assembly, wherein the lower cooling assembly comprises a lower cooling pipe and a lower heat conducting piece, one end of the lower heat conducting piece is connected with the lower cooling pipe, and the other end of the lower heat conducting piece stretches into the mold core.

Optionally, the thin-wall shell mold further comprises an upper cooling assembly, wherein the upper cooling assembly comprises a cover plate cooling pipe and an upper cooling pipe, the cover plate cooling pipe stretches into the cover plate, and the upper cooling pipe stretches into the upper mold core.

Optionally, a positioning cavity is arranged at the bottom of the upper die core, and a positioning protrusion protruding upwards is arranged on the fixing plate;

and when the upper die and the lower die are assembled, the positioning protrusion is embedded into the positioning cavity.

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

in the thin-wall shell mold, the angle inclined towards the middle of the cavity is formed, and the thin-wall shell can be separated from the cavity under the condition of slightly demolding during demolding, so that the thin-wall shell can be separated from the cavity quickly; the side wall of the mold core is provided with an angle inclined towards the middle of the mold core, and the thin-wall shell can be separated from the mold core under the condition of slightly demolding the thin-wall shell, so that the separation speed of the thin-wall shell and the mold core is improved. When the side wall of the die cavity and the side wall of the core are inclined, the thin-wall shell can be separated from the die cavity and the core rapidly, the adhesion time of the thin-wall shell product and the die cavity and the core is shortened, and especially the relative movement generated during adhesion can be shortened, the distance between the thin-wall shell product and the die cavity and between the thin-wall shell product and the core is increased along with demolding, the adhesion of the thin-wall shell product and the die cavity and the core is avoided, and scratches generated during demolding of the thin-wall shell are avoided or reduced. Therefore, in this embodiment, can increase the distance between thin wall casing product and die cavity, the core fast when the drawing of patterns, reduce the adhesion time, avoid adhesion once more to reduce the drawing of patterns degree of difficulty of thin wall casing, reduce the scratch of inside and outside surface, improve the transmittance, strengthen transparent effect.

Drawings

FIG. 1 is a schematic perspective view of a thin-walled shell mold of the present utility model;

FIG. 2 is a schematic cross-sectional view of a thin-walled shell mold of the present utility model;

FIG. 3 is an exploded view of the thin-walled shell mold of the present utility model;

FIG. 4 is an exploded view of a mold insert of the thin-walled shell mold of the present utility model;

FIG. 5 is a schematic view of an outlet tube in a thin-walled shell mold of the present utility model;

FIG. 6 is an enlarged schematic view of the partial area A in FIG. 2;

FIG. 7 is an enlarged schematic view of a partial area B in FIG. 2; .

In the figure:

1. a top plate;

2. upper template

3. An upper mold core assembly; 31. an upper die core; 311. a cavity; 312. a cover plate groove; 313. a positioning cavity; 32. a cover plate; 321. a vent groove; 322. an upper seal groove; 33. a second gas conduit;

4. a bottom plate;

5. a lower template; 51. a mounting groove; 52. a lower seal groove;

6. a lower die core assembly; 61. a lower die core; 611. a core; 612. a vent hole; 613. a cavity; 62. a fixing plate; 621. positioning the bulge;

7. a demolding assembly; 71. a first gas conduit; 72. an air outlet pipe; 721. a circular ring; 722. a side hole; 73. a support tube; 731. a compression ring; 74. an elastic member;

8. a lower cooling assembly; 81. a lower cooling tube; 82. and a lower heat conducting member.

Detailed Description

The present utility model will be further described with reference to fig. 1 to 7 and the detailed description, wherein, on the premise of no conflict, new embodiments can be formed by any combination of the embodiments or technical features described below.

As shown in fig. 1 and 2, the utility model provides a thin-wall shell mold for injection molding of a transparent thin-wall shell. The thin-wall shell mould comprises an upper mould and a lower mould, wherein the upper mould comprises a top plate 1, an upper template 2 and an upper mould core assembly 3 arranged on the upper template 2, and the lower mould comprises a bottom plate 4, a lower template 5 and a lower mould core assembly 6 arranged on the lower template 5.

The upper mold core assembly 3 includes an upper mold core 31 and a cover plate 32, the upper mold core 31 is provided with a cavity 311 penetrating through the top of the upper mold core 31, an upper opening of the cavity 311 is formed at the top of the upper mold core, the cover plate 32 is disposed at the top of the upper mold core 31, the cover plate 32 covers the top of the cavity 311, i.e. covers the upper opening of the cavity 311, and the side wall of the cavity 311 is inclined towards the middle of the cavity 311. The lower die core assembly 6 comprises a lower die core 61 and a fixed plate 62, the lower die core 61 is provided with a die core 611, the fixed plate 62 is provided with a sleeve hole, the fixed plate 62 is sleeved on the lower die core 61 through the sleeve hole, and the side wall of the die core 611 is inclined towards the middle of the die core 611.

After the thin-wall shell is injection molded, the thin-wall shell and the core 611 and the thin-wall shell and the cavity 311 are mutually tightly adhered, and meanwhile, the thin-wall shell and the core 611 and the thin-wall shell and the cavity 311 are easily adhered again due to contact again in the demolding process, and scratches are easily generated when the adhesion is accompanied with demolding movement, so that the demolding difficulty is increased. In this embodiment, the side wall of the cavity 311 has an angle inclined toward the middle of the cavity 311, and the thin-wall shell can be separated from the cavity 311 under the condition of slightly demolding during demolding, so that the thin-wall shell can be quickly separated from the cavity 311; the side wall of the core 611 is provided with an angle inclined towards the middle of the core 611, and the thin-wall shell can be separated from the core 611 under the condition of slightly demolding the thin-wall shell, so that the separation speed of the thin-wall shell from the core 611 is improved. When the side wall of the die cavity 311 and the side wall of the core 611 are inclined, the thin-wall shell can be quickly separated from the die cavity 311 and the core 611, the adhesion time of the thin-wall shell product and the die cavity 311 and the core 611 is shortened, and especially the relative movement generated during adhesion can be shortened, the distance between the thin-wall shell product and the die cavity 311 and the core 611 is increased along with demolding, the adhesion of the thin-wall shell product and the die cavity 311 and the core 611 is avoided, and scratches generated during demolding of the thin-wall shell are avoided or reduced. Therefore, in this embodiment, the distance between the thin-wall shell product and the cavity 311 and the core 611 can be increased rapidly during demolding, the adhesion time is shortened, and the adhesion is avoided again, so that the demolding difficulty of the thin-wall shell is reduced, scratches on the inner and outer surfaces are reduced, the transmittance is improved, and the transparent effect is enhanced.

Specifically, the inclination angle of the side wall of the cavity 311 is 0.1 to 4 degrees.

Of course, in some further ranges, it may be defined as 0.2 degrees to 2 degrees. Specific angles may be 0.2 degrees, 0.3 degrees, 0.4 degrees, 0.5 degrees, 0.6 degrees, 0.7 degrees, 0.8 degrees, 0.9 degrees, 1.1 degrees, 1.2 degrees, 1.3 degrees, 1.4 degrees, 1.5 degrees, 1.6 degrees, 1.7 degrees, 1.8 degrees, 1.9 degrees, 2 degrees, and other values between the foregoing example values.

Specifically, as shown in fig. 2 and 3, a cover plate groove 312 is formed at the top of the upper mold core 31, the shape of the cover plate groove 312 is adapted to the shape of the cover plate 32, and the cover plate 32 is detachably fixed in the cover plate groove 312. While the cavity 311 penetrates up and down and to the bottom of the cover plate groove 312.

Of course, one, two or more than two cavities 311 may be provided in one upper core module 3, and correspondingly, one, two or more than two cores 611 may be provided in one lower core module 6.

In some embodiments of the lower core assembly 6, as shown in fig. 2 and 4, a cavity 613 is provided in the lower core 61, and a vent hole 612 is provided at the top of the core 611 and communicates with the cavity 613. The lower die is provided with a demoulding assembly 7, and the demoulding assembly 7 comprises a first gas pipeline 71, and the first gas pipeline 71 extends into the cavity 613. In this way, before demolding, gas is injected between the core 611 and the thin-walled housing through the first gas pipe 71, the cavity 613 and the vent hole 612 to gas fill the gap between the inner wall of the thin-walled housing and the core 611, and before demolding movement, the distance between the core 611 and the inner wall of the thin-walled housing is increased, avoiding or reducing the occurrence of relative sliding at the time of adhesion.

Further, as shown in fig. 5 and 6, the demolding assembly 7 further comprises an air outlet pipe 72 communicated with the first air pipeline 71, the air outlet pipe 72 extends into the air vent 612 to be used for blocking plastic flow, an air outlet gap is formed between the upper end of the air outlet pipe 72 and the air vent 612, the upper end of the air outlet pipe 72 is closed, and a side hole 722 is formed in the side wall of the upper end of the air outlet pipe 72. The vent hole 612 is relatively hole-shaped, so that high-temperature fluid flow during injection molding is easy to enter the cavity 613 from the vent hole 612, on the one hand, the shape of the thin-wall shell is affected, and in addition, the demolding difficulty of the thin-wall shell is increased. Therefore, in this embodiment, the air outlet pipe 72 is provided to seal the flow molding, specifically, the upper end of the air outlet pipe 72 is closed, an air outlet gap is reserved between the upper end of the air outlet pipe 72 and the air vent 612, and a side hole 722 is provided, so that the air can flow out from the side hole 722, then enter the air outlet gap, flow out along the air vent 612, and finally, the air fills between the inner wall of the thin-wall shell and the core 611 along with the enhancement of the air pressure, thereby avoiding or reducing scratches generated on the inner wall of the thin-wall shell by the core 611, and improving the transparent effect of the product.

For the aforementioned side holes 722, there may be a single side hole 722, two side holes 722 disposed opposite each other, or a plurality of side holes 722 uniformly distributed along the circumference of the outlet pipe 72.

The air outlet gap may be, specifically, an elongated groove provided on the surface of the air outlet pipe 72 and extending in the axial direction. Of course, the air outlet gap may also be an annular groove provided along the outer circumference of the upper end of the air outlet pipe 72, the annular groove extending all the way to the end of the air outlet pipe 72, the section where the air outlet gap is located having a diameter smaller than the diameter of the air outlet pipe 72.

Further, as shown in fig. 2 and 6, the cavity 613 is elongated, and the demolding assembly 7 further includes a support tube 73, wherein the support tube 73 is disposed in the cavity 613, specifically, the cross-sectional shape of the support tube 73 is adapted to the cross-sectional shape of the cavity 613. The upper end of the support tube 73 abuts against the lower end of the air outlet tube 72, and the support tube 73 is connected with the first air pipe 71. In this embodiment, the air outlet pipe 72 is supported by the upper end of the support pipe 73, so that the air outlet pipe 72 is kept at a fixed position, and the air outlet pipe 72 can be blocked during injection molding.

As shown in fig. 3, the lower die is provided with a mounting groove 51 for mounting the upper die core assembly 3, specifically, the lower die plate 5 is provided with the mounting groove 51, the bottom of the mounting groove 51 is provided with a lower seal groove 52 provided corresponding to the cavity 613, specifically, the lower die plate 5 is provided with the lower seal groove 52. A lower seal ring is provided in the lower seal groove 52. As shown in fig. 4, a pressing ring 731 is provided at the lower end of the support tube 73, and the pressing ring 731 presses down the seal ring. In this embodiment, a pressing ring 731 is disposed at the lower end of the support tube 73, and the sealing of the cavity 613 is formed by the pressing ring 731 and the lower sealing ring, so as to avoid gas leakage through the first gas pipe 71 and the support tube 73, improve the demoulding pressure of the gas, and improve the osmotic pressure of the gas in the air outlet gap.

The lower end of the air outlet pipe 72 extends into the cavity 613, and the lower end of the air outlet pipe 72 is provided with a circular ring 721 protruding out of the outer circumferential surface of the air outlet pipe 72. The demolding assembly 7 further comprises an elastic piece 74, wherein the elastic piece 74 is located above the circular ring 721, the lower end of the elastic piece 74 is abutted against the circular ring 721, and the upper end of the elastic piece 74 is abutted against the top inner wall of the cavity 613. In this embodiment, the elastic member 74 applies pressure to the ring 721 to force the lower end of the air outlet pipe 72, i.e. the ring 721, to compress the support pipe 73, thereby preventing the air outlet pipe 72 from protruding out of the core 611; in addition, under the elastic force of the elastic piece 74, the air outlet pipe 72 can continuously apply pressure to the supporting pipe 73, so that the pressing ring 731 at the lower end of the supporting pipe 73 can continuously apply pressure to the lower sealing ring, thereby improving the sealing effect and keeping the sealing continuity.

Specifically, the elastic member 74 is a compression spring or an elastic rubber member.

Also, with the aforementioned hollow 613 having a long hole shape, the whole length is three, with the main body portion of the hollow 613 being located in the middle for accommodating the support pipe 73. The cavity 613 has an upper inner diameter smaller than that of the main body portion for accommodating the lower end of the outlet pipe 72 and the elastic member 74. The lower section of the cavity 613 has an inner diameter larger than that of the main body portion for receiving the compression ring 731.

In some embodiments of the upper core assembly 3, as shown in fig. 3, the upper core assembly 3 further includes a second gas pipe 33, and the second gas pipe 33 extends partially into the cover plate 32. The bottom of the cover plate 32 is provided with a vent groove 321 provided around the cavity 311, specifically, an upper opening around the cavity 311, the vent groove 321 communicating with the second gas duct 33. The bottom of the cover plate 32 has a molding surface located at the top of the molding cavity 311, and the bottom of the cover plate 32 is further provided with a vent gap extending from the vent groove 321 to the molding surface. The ventilation groove 321 injects gas into the cavity 311 through the ventilation gap, under the action of higher gas pressure, the gas fills the gap between the inner wall of the cavity 311 and the thin-wall shell, before demolding movement, the distance between the inner wall of the cavity 311 and the outer wall of the thin-wall shell is increased, relative sliding is avoided or reduced when adhesion is carried out, thereby avoiding or reducing scratches on the outer wall of the thin-wall shell by the inner wall of the cavity 311, and improving the transparent effect of a product.

Further, as shown in fig. 4 and 6, an upper seal groove 322 surrounding the vent groove 321 is provided at the bottom of the cover plate 32, and an upper seal ring is provided in the upper seal groove 322. When the cover plate 32 is mounted on top of the upper mold core, the upper sealing ring seals the gap between the cover plate 32 and the upper mold core, specifically, the gap around the outer area of the ventilation groove 321 and between the bottom of the cover plate 32 and the bottom of the cover plate groove 312. Thus, the leakage of the vent groove 321 is avoided or reduced, the gas release pressure is increased, and the gas permeation pressure in the vent gap is increased.

In some embodiments, as shown in fig. 4, the thin-walled shell mold further includes a lower cooling assembly 8, and the lower cooling assembly 8 includes a lower cooling tube 81 and a lower heat conducting member 82, and one end of the lower heat conducting member 82 is connected to the lower cooling tube 81, and the other end extends into the core 611. The cooling speed of the thin-wall shell is accelerated through the lower cooling component 8, the injection molding cycle is shortened, and the production efficiency is improved.

Specifically, the lower heat conducting member 82 may be an aluminum tube, copper tube, aluminum sheet, copper sheet, or the like

In some embodiments, the thin-walled shell mold further includes an upper cooling assembly comprising a cover plate 32 cooling tube extending into the cover plate 32 and an upper cooling tube extending into the upper mold core 31. The cooling speed of the thin-wall shell is accelerated through the upper cooling assembly, the injection molding cycle is shortened, and the production efficiency is improved.

In some embodiments, as shown in fig. 4, the bottom of the upper mold core 31 is provided with a positioning cavity 313, and the fixing plate 62 is provided with an upward protruding positioning protrusion 621. The positioning boss 621 is inserted into the positioning cavity 313 when the upper and lower molds are clamped. By arranging the positioning cavity 313 and the positioning protrusion 621, the matching precision of the upper die core and the lower die core 61 is improved, and the forming precision of the thin-wall shell is improved.

The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.

Claims

1. The thin-wall shell mold comprises an upper mold and a lower mold, wherein the upper mold comprises an upper mold core assembly, and the lower mold comprises a lower mold core assembly, and is characterized in that the upper mold core assembly comprises an upper mold core and a cover plate, a cavity penetrating to the top of the upper mold core is arranged on the upper mold core, the cover plate is arranged at the top of the upper mold core, the cover plate covers the top of the cavity, and the side wall of the cavity is inclined towards the middle of the cavity;

2. The thin-walled shell mold of claim 1, wherein a cavity is provided in the lower core, and a vent hole is provided at the top of the core in communication with the cavity;

3. The thin-walled housing mold of claim 2, wherein the stripper assembly further comprises an outlet tube in communication with the first gas conduit, the outlet tube extending into the vent for sealing off the flow of molding, an outlet gap being provided between an upper end of the outlet tube and the vent, an upper end of the outlet tube being closed, a side opening being provided in a side wall of the upper end of the outlet tube.

4. The thin-walled housing mold of claim 3, wherein the cavity is elongated, and the stripper assembly further comprises a support tube disposed within the cavity, the upper end of the support tube abutting the lower end of the outlet tube, the support tube being connected to the first gas conduit.

5. The thin-wall shell mold according to claim 4, wherein the lower mold is provided with a mounting groove for mounting the upper mold core assembly, the bottom of the mounting groove is provided with a lower sealing groove corresponding to the cavity, and a lower sealing ring is arranged in the lower sealing groove;

6. The thin-walled shell mold of claim 5, wherein the lower end of the air outlet tube extends into the cavity, and the lower end of the air outlet tube is provided with a circular ring protruding out of the outer circumferential surface of the air outlet tube;

7. The thin-walled housing mold of claim 1, wherein the upper core assembly further comprises a second gas conduit extending partially into the cover plate;

8. The thin-walled shell mold of claim 1 further comprising a lower cooling assembly comprising a lower cooling tube and a lower thermally conductive member having one end connected to the lower cooling tube and the other end extending into the core.

9. The thin-walled shell mold of claim 1, further comprising an upper cooling assembly comprising a cover cooling tube extending into the cover and an upper cooling tube extending into the upper core.

10. The thin-walled shell mold according to claim 1, wherein the bottom of the upper mold core is provided with a positioning cavity, and the fixing plate is provided with a positioning protrusion protruding upwards;