CN119550564A

CN119550564A - A three-color three-station injection mold and molding process

Info

Publication number: CN119550564A
Application number: CN202510124067.4A
Authority: CN
Inventors: 刘益环; 童金; 邢源峰
Original assignee: Advanced Solutions Mold (shenzhen) Ltd
Current assignee: Advanced Solutions Mold (shenzhen) Ltd
Priority date: 2025-01-26
Filing date: 2025-01-26
Publication date: 2025-03-04
Anticipated expiration: 2045-01-26
Also published as: CN119550564B

Abstract

The invention discloses a three-color three-station injection mold and a molding process, which relate to the technical field of injection molds and comprise the following steps of S1 mold design and manufacture, S2 material preparation, S3 injection molding machine debugging, S4 mold installation and debugging, S5 injection molding, S6 cooling and solidification, S7 demolding and taking out, namely demolding and taking out an injection molding product from the mold, wherein the plastic material is selected, the S3 injection molding machine debugging, the three-color three-station injection mold is installed on the injection molding machine, the S5 injection molding is carried out, the plastic material is added into a hopper of the injection molding machine, the S6 cooling and solidification is carried out, and the injection molding product is cooled and solidified and is taken out.

Description

Three-color three-station injection mold and molding process

Technical Field

The invention relates to the technical field of injection molds, in particular to a three-color three-station injection mold and a molding process.

Background

In the development of multi-color injection molding technology, conventional multi-color injection molding generally requires multiple injection molding processes to complete the molding of different colors, which not only increases the production time and cost, but also places higher demands on the design and manufacture of the mold. For example, conventional three-color injection molding typically requires three separate molds and injection molding stations, one for each color. The conventional production method may require a plurality of processes and manual operations, and the method has high equipment cost and is easy to generate positioning errors in the production process, so that the quality of the product is unstable. In addition, the conventional three-color injection mold has a certain limitation in demolding. Because the product can appear the structure complicacy in the in-process of moulding plastics, the surface requirement is high etc. phenomenon, and traditional demoulding mechanism often is difficult to effectively handle these problems, leads to the product to damage easily. These problems limit the application of polychromatic injection moulding techniques in some complex products, especially in production environments where high precision and efficiency are required.

The three-color three-station injection mold aims to solve the problems, and injection molding of three colors or three materials is achieved in one mold simultaneously through innovative mold design and injection molding process. The technology not only reduces the production procedures and manual operation and greatly improves the stability and production efficiency of products, but also provides a new direction for the development of injection molding technology.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a three-color three-station injection mold and a molding process.

In order to solve the technical problems, the invention provides the following technical scheme:

The invention relates to a three-color three-station injection mold, which comprises:

The upper die is arranged on the injection molding machine;

The lower die is used for being matched with the upper die to generate a required three-color tail lamp mask under the injection molding of the injection molding machine, and the lower die is arranged on a movable die rotating disc of the injection molding machine and used for driving the lower die to rotate;

the demoulding mechanism is positioned in the lower mould and is used for demoulding and separating the three-color tail lamp mask after cooling and forming from the lower mould;

The demolding mechanism comprises a plurality of jacking push rods, a fixed base and a limiting movable base, wherein the bottom ends of the jacking push rods are fixedly connected with the fixed base, and the movable base is positioned at the top of the fixed base and is respectively connected with the plurality of jacking push rods in a sliding manner;

The utility model discloses a fixed base, spacing movable seat, fixed base, fixed connection seat, locking piece, oil cylinder, fixed connection seat and fixed connection seat are all offered to the both sides of fixed base and spacing movable seat, the opening that is the U type has all been offered, two the inboard of opening all is provided with the fixed connection seat that is used for carrying out the connection to both fixed base and spacing movable seat, the bottom of fixed connection seat is provided with the hydro-cylinder, the output of hydro-cylinder is fixed with the fixed connection seat through the locking piece.

As a preferable technical scheme of the invention, the upper die comprises an upper top plate, a flow dividing plate and a fixed die plate, wherein the upper top plate, the flow dividing plate and the fixed die plate are sequentially and fixedly connected, a first flow passage, a second flow passage and a third flow passage are respectively arranged on two sides of the top end of the upper top plate and one side of the flow dividing plate, and inlet ports of the first flow passage, the second flow passage and the third flow passage respectively correspond to a first nozzle, a second nozzle and a third nozzle on an injection molding machine.

As a preferable technical scheme of the invention, three fixed module chambers are equidistantly arranged on the bottom end surface of the fixed die plate along the circumferential direction, and a first die cavity is correspondingly arranged in each fixed module chamber;

The first runner and the second runner are respectively provided with three flow dividing channels, each flow dividing channel is respectively corresponding to a first die cavity in each fixed die cavity, and the third runner is provided with one corresponding first die cavity in one fixed die cavity.

As a preferable technical scheme of the invention, the lower die comprises a lower bottom plate, a supporting cushion block and a movable die plate, wherein the movable die plate is fixedly arranged on a movable die rotary disc of an injection molding machine, the lower bottom plate, the supporting cushion block and the movable die plate are sequentially and fixedly connected, three movable die block cavities are formed in the top end of the movable die plate, a second die cavity is detachably arranged in each movable die block cavity through bolts, and the second die cavity and the first die cavity are correspondingly arranged.

As a preferable technical scheme of the invention, the edges of the two sides of the top end of the second die cavity are respectively provided with a positioning guide groove in a penetrating way, the moving die cavity is internally provided with a positioning guide block matched with the positioning guide groove, the two sides of the inner part of the moving die cavity are respectively fixedly provided with a side die core, and the second die cavity is provided with a side cavity corresponding to the side die core.

As a preferable technical scheme of the invention, the jacking push rods are distributed in a matrix, the top ends of the jacking push rods penetrate through the movable module cavity and are arranged in through holes formed in the second die cavity in a penetrating mode, and the top ends of the jacking push rods are flush with the inner die surface of the second die cavity.

As a preferable technical scheme of the invention, the oil cylinder is fixedly arranged at the top end of the lower bottom plate, and the oil cylinder is positioned at the outer side of the supporting cushion block.

As a preferable technical scheme of the invention, a positioning cone block is fixedly arranged in the middle of the bottom end of the fixed die plate, and a positioning groove is correspondingly formed in the top end of the movable die plate and the positioning cone block.

As a preferable technical scheme of the invention, a group of guide posts are respectively arranged on one side of the bottom surface of the fixed die plate, which is positioned in the cavity of the fixed die block, each group of guide posts are respectively distributed along the circumferential direction at equal intervals, each group of guide posts are two, and slots for accommodating the insertion of the guide posts are correspondingly arranged on the movable die plate and correspond to the guide posts.

The invention also provides a three-color three-station injection mold forming process, which comprises the following steps:

s1, designing and manufacturing a three-color three-station injection mold according to the requirements of products;

s2, preparing a material, namely selecting a plastic material, and preparing plastic particles or powder according to the color and material requirements of the product;

S3, debugging the injection molding machine, namely adjusting parameters of the injection molding machine, ensuring that the injection molding machine can work normally and meeting the requirement of three-color three-station injection molding;

S4, mounting and debugging a three-color three-station injection mold on an injection molding machine, so that the mold is ensured to be mounted correctly and can be matched with the injection molding machine well;

S5, injection molding, namely adding a plastic material into a hopper of an injection molding machine, and injecting the plastic material into a cavity of a mold under the heating and pressurizing actions of the injection molding machine;

s6, cooling and solidifying, namely cooling the injection molding product after injection molding is finished to solidify and form the injection molding product;

and S7, demolding and taking out, namely opening the mold after the injection molding product is cooled and solidified, and demolding and taking out the injection molding product from the mold.

The beneficial effects of the invention are as follows:

1. This kind of three-colour three-position injection mold, carry out first penetrating and the second operation of penetrating in the shaping cavity that second die cavity and first die cavity constitute respectively through first nozzle and second nozzle, simultaneously inject two kinds of different colours to three stations respectively, the third is penetrated the work and is injected the third colour plastics in the shaping cavity of first station through the third nozzle, after the operation is accomplished, movable mould board and cover half are opened, the demoulding mechanism work on the first station of accomplishing the third and penetrating the injection molding carries out ejecting drawing of patterns with the product after the shaping, then the movable mould board is rotated to the gyration dish of rethread injection molding machine, the movable mould board then carries out 120 rotations with the second die cavity, the demoulding mechanism on the two stations that do not carry out the third at this moment does not do ejecting action, then the compound die again, carry out the third to the shaping cavity on the second station after the injection molding is accomplished, open cover half and movable mould board, carry out ejecting drawing of patterns through the demoulding mechanism to the product, then repeat the operation carries out the third to penetrate the drawing of patterns and carry out the product, in a work cycle, can obtain three car face masks simultaneously, and the production cost can be improved, and a plurality of work positions need not set up and a plurality of production moulds can be reduced, the production cost is reduced, the production and the production cost can be stable, can be stable and the production mould can not be collocated.

2. This kind of three-colour three-position injection mold, hydro-cylinder work promotes fixed connection seat and removes, and fixed connection seat removes then can drive unable adjustment base and movable seat and upwards moves simultaneously, and unable adjustment base removes then can promote the jacking push rod and upwards moves, through the setting of a plurality of jacking push rods and be matrix arrangement with it, can make the product after injection moulding carry out the omnidirectional atress like this, directly carries out ejecting drawing of patterns with automobile taillight face guard, can carry out more effectual drawing of patterns to some products that the structure is complicated and the surface requires highly, also can reduce the drawing of patterns process simultaneously and cause the possibility of damage for the product.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:

FIG. 1 is a schematic view of the structure of the present invention when a stationary platen is separated from a movable platen;

FIG. 2 is a side view of the stationary platen and the movable platen of the present invention in a closed position;

FIG. 3 is a schematic view of the upper mold structure of the present invention;

FIG. 4 is a schematic view of the lower die structure of the present invention;

FIG. 5 is a schematic view of the internal structure of the movable module chamber of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 5A in accordance with the present invention;

FIG. 7 is a schematic view of a second mold cavity configuration of the present invention;

FIG. 8 is a schematic view of the connection between the demolding mechanism and the second mold cavity of the present invention;

FIG. 9 is a schematic view of the structure of the product of the present invention being ejected from the second mold cavity by the ejector pins;

FIG. 10 is an internal cross-sectional view of the upper mold of the present invention;

Fig. 11 is a schematic view of each rotation angle of the lower die of the present invention.

In the figure, 01, a first nozzle, 02, a second nozzle, 03, a third nozzle, 10, an upper mold, 11, an upper top plate, 12, a splitter plate, 13, a fixed mold plate, 14, a first runner, 15, a second runner, 16, a third runner, 17, a fixed mold block cavity, 18, a first mold cavity, 19, a positioning cone block, 110, a guide post, 20, a lower mold, 21, a lower bottom plate, 22, a support cushion block, 23, a movable mold plate, 24, a movable mold block cavity, 25, a second mold cavity, 26, a positioning guide groove, 27, a positioning guide block, 28, a side core, 29, a side cavity, 210, a perforation, 211, a positioning groove, 212, a slot, 30, a demolding mechanism, 31, a jacking push rod, 32, a fixed base, a movable base, 34, an opening, 35, a fixed connecting base, 36, an oil cylinder, 37 and a locking block.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.

Embodiment as shown in fig. 1 to 11, the three-color three-station injection mold of the present invention comprises:

An upper mold 10, wherein the upper mold 10 is arranged on the injection molding machine;

The lower die 20 is used for being matched with the upper die 10 to generate a required three-color tail light mask under the injection molding of the injection molding machine, and the lower die 20 is arranged on a movable die rotary disc of the injection molding machine and used for driving the lower die 20 to rotate;

The demoulding mechanism 30 is positioned in the lower mould 20 and is used for demoulding and separating the three-color tail lamp mask after cooling and forming from the lower mould 20;

The demoulding mechanism 30 comprises a plurality of jacking push rods 31, a fixed base 32 and a limiting movable base 33, wherein the bottom ends of the jacking push rods 31 are fixedly connected with the fixed base 32, and the movable base 33 is positioned at the top of the fixed base 32 and is respectively in sliding connection with the plurality of jacking push rods 31;

the both sides of unable adjustment base 32 and spacing movable seat 33 have all been seted up and are the opening 34 of U type, and the inboard of two openings 34 all is provided with the fixed connection seat 35 that is used for carrying out the connection to unable adjustment base 32 and spacing movable seat 33, and the bottom of fixed connection seat 35 is provided with hydro-cylinder 36, and hydro-cylinder 36's output is fixed with fixed connection seat 35 through latch segment 37.

The upper die 10 comprises an upper top plate 11, a flow distribution plate 12 and a fixed die plate 13, wherein the upper top plate 11, the flow distribution plate 12 and the fixed die plate 13 are sequentially and fixedly connected, a first flow passage 14, a second flow passage 15 and a third flow passage 16 are respectively arranged on two sides of the top end of the upper top plate 11 and one side of the flow distribution plate 12, and inlet ports of the first flow passage 14, the second flow passage 15 and the third flow passage 16 respectively correspond to a first nozzle 01, a second nozzle 02 and a third nozzle 03 on the injection molding machine; three fixed module chambers 17 are equidistantly arranged on the bottom end surface of the fixed template 13 along the circumferential direction, and a first die cavity 18 is correspondingly arranged in each fixed module chamber 17; the first runner 14 and the second runner 15 are respectively provided with three runners, each runner corresponds to the first die cavity 18 in each fixed die cavity 17, the third runner 16 is provided with one runner and corresponds to the first die cavity 18 in one corresponding fixed die cavity 17, in actual use, the first injection and the second injection operations are respectively carried out in the forming cavity formed by the second die cavity 25 and the first die cavity 18 through the first nozzle 01 and the second nozzle 02, two different colors are respectively injected into the forming cavity of the first die cavity 25 at the same time, the third injection operation is carried out by injecting the plastic with the third color into the forming cavity of the first die cavity through the third nozzle 03, after the operation is finished, the movable die plate 23 and the fixed die plate 13 are opened, the operation of the demoulding mechanism 30 on the first die cavity for completing the third injection is carried out to eject the formed product, then the movable die plate 23 is driven to rotate through the rotary disc of the injection molding machine, the movable die plate 23 is driven to rotate 120 DEG through the second die cavity 25, at the moment, the demoulding mechanism 30 on the two die cavities without the third operation is not ejected, then the second die cavity is carried out again, the third injection molding is carried out on the second die cavity, after the injection molding is completed, the fixed die plate 13 and the movable die plate 23 are opened, the product is ejected and demolded through the demolding mechanism 30, then the operation is repeated to perform third injection molding on the third station and demolding is performed on the product, and three automobile tail lamp face shield products can be obtained simultaneously in one working period.

Wherein, bed die 20 includes bed plate 21, supporting pad 22 and movable mould board 23, the fixed setting of movable mould board 23 is on the movable mould revolving tray of injection molding machine, fixed connection in proper order between bed plate 21, supporting pad 22 and the movable mould board 23 three, three movable mould cavity 24 have been seted up on the top of movable mould board 23, all can dismantle through the bolt in every movable mould cavity 24 and be provided with a second die cavity 25, set up correspondingly between second die cavity 25 and the first die cavity 18, cooperate the compound die with first die cavity 18 through second die cavity 25, can constitute and be used for the fashioned shaping cavity of automobile tail lamp face guard, and through fixing second die cavity 25 in movable mould cavity 24 through the bolt and conveniently install and dismantle second die cavity 25.

Wherein, the edge of second die cavity 25 top both sides all runs through and has seted up location guide slot 26, move the interior location guide block 27 that cooperatees of die cavity 24 with location guide slot 26, and move the inside both sides of die cavity 24 and all fixedly be provided with side core 28, the side cavity 29 has been seted up to the last correspondence with side core 28 of die cavity 25, through the cooperation of location guide slot 26 with location guide block 27, can place the second die cavity 25 location in moving the die cavity 24, through side core 28 and side cavity 29 cooperation, can seal the inner face of second die cavity 25 simultaneously also can carry out the automobile taillight face guard of the required edge shape of cooperation shaping with second die cavity 25.

The jacking push rods 31 are distributed in a matrix, the top ends of the jacking push rods 31 penetrate through the movable module cavity 24 and are arranged in penetrating holes 210 formed in the second die cavity 25, the top ends of the jacking push rods 31 are flush with the inner die surface of the second die cavity 25, the oil cylinders 36 are fixedly arranged at the top ends of the lower base plate 21 and are positioned at the outer sides of the supporting cushion blocks 22, the jacking push rods 31 are distributed in a matrix and are inserted in the second die cavity 25, so that when the demoulding treatment is carried out on the automobile tail lamp face mask formed in the second die cavity 25, the plurality of jacking push rods 31 can be contacted with the inner face of the automobile tail lamp face mask in an omnibearing manner, the products can be stressed in an omnibearing manner under the cooperation of the oil cylinders 36, the tail lamp face mask can be directly ejected and demoulded from the second die cavity 25, and the products with the reverse buckling condition can be repaired under the pushing of the jacking push rods 31.

The middle part of the bottom end of the fixed die plate 13 is fixedly provided with a positioning cone block 19, the top end of the movable die plate 23 is correspondingly provided with a positioning groove 211 with the positioning cone block 19, one side of the bottom surface of the fixed die plate 13, which is positioned in the cavity 17 of the fixed die plate, is respectively provided with a group of guide posts 110, each group of guide posts 110 are respectively distributed along the circumferential direction at equal intervals, two guide posts 110 are arranged on each group of guide posts 110, slots 212 for accommodating the insertion of the guide posts 110 are correspondingly formed in the movable die plate 23, and the fixed die plate 13 and the movable die plate 23 can be accurately clamped through the matching of the positioning cone block 19 and the positioning groove 211 and the matching of three groups of guide posts 110 and the three groups of slots 212.

The upper top plate 11 and the lower bottom plate 21 are respectively and correspondingly fixed on an injection molding machine with three injection systems, after the fixed die plate 13 and the movable die plate 23 are clamped, the first injection operation and the second injection operation are respectively carried out in a molding cavity formed by the second die cavity 25 and the first die cavity 18 through the first nozzle 01 and the second nozzle 02, two different colors are respectively injected into the three stations at the same time, the third injection operation is carried out by injecting the third color plastics into the molding cavity of the first station through the third nozzle 03, after the operation is completed, the movable die plate 23 and the fixed die plate 13 are opened, the operation of a demoulding mechanism 30 on the first station for completing the third injection molding is carried out to eject and demould a molded product, then the movable die plate 23 is driven to rotate through a rotary disc of the injection molding machine, the movable die plate 23 is driven to rotate by 120 DEG, at the moment, the demoulding mechanism 30 on the two stations which are not subjected to the third injection is not carried out, then the die clamping operation is carried out again, the third injection molding is carried out on the molding cavity on the second station, after the injection molding operation is completed, the movable die plate 13 and the movable die plate 23 is opened, the movable die plate 23 is driven by a rotary disc, the three injection molding operation is carried out by the rotary die station, the three injection molding operation is carried out, the three injection operation is carried out and the production cycle is carried out, and the three injection molding operation is carried out, and the products can be manufactured, and the production cycle is not needs to be simultaneously, and the three injection operation is carried by the production of a mask;

The demoulding mechanism 30 is provided with three groups of three movable module chambers 24, and when demoulding operation is carried out, the oil cylinder 36 works to push the fixed connecting seat 35 to move, the fixed connecting seat 35 moves to drive the fixed base 32 and the movable seat 33 to move upwards simultaneously, the fixed base 32 moves to push the jacking push rod 31 to move upwards, and the jacking push rods 31 are arranged in a matrix, so that products after injection molding are subjected to omnibearing stress, and the automobile tail lamp mask is directly ejected and demoulded.

It should be noted that the above-mentioned embodiments are merely preferred embodiments of the present invention, and the present invention is not limited thereto, but may be modified or substituted for some of the technical features thereof by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-color three-station injection mold, comprising:

an upper mold (10), wherein the upper mold (10) is arranged on the injection molding machine;

The lower die (20) is used for being matched with the upper die (10) to generate a required three-color tail light mask under the injection molding of the injection molding machine, and the lower die (20) is arranged on a movable die rotating disc of the injection molding machine and used for driving the lower die (20) to rotate;

The demoulding mechanism (30) is positioned in the lower die (20) and is used for demoulding and separating the three-color tail lamp mask after cooling and forming from the lower die (20);

The demolding mechanism (30) comprises a plurality of jacking push rods (31), a fixed base (32) and a limiting movable base (33), wherein the bottom end of the jacking push rods (31) is fixedly connected with the fixed base (32), and the movable base (33) is positioned at the top of the fixed base (32) and is respectively connected with the plurality of jacking push rods (31) in a sliding manner;

Both sides of the fixed base (32) and the limiting movable base (33) are provided with U-shaped openings (34), the inner sides of the two openings (34) are provided with fixed connecting bases (35) for connecting the fixed base (32) and the limiting movable base (33), the bottom of fixed connection seat (35) is provided with hydro-cylinder (36), the output of hydro-cylinder (36) is fixed with fixed connection seat (35) through latch segment (37).

2. The three-color three-station injection mold according to claim 1, wherein the upper mold (10) comprises an upper top plate (11), a flow distribution plate (12) and a fixed mold plate (13), the upper top plate (11), the flow distribution plate (12) and the fixed mold plate (13) are sequentially and fixedly connected, a first flow channel (14), a second flow channel (15) and a third flow channel (16) are respectively arranged on two sides of the top end of the upper top plate (11) and one side of the flow distribution plate (12), and inlet ports of the first flow channel (14), the second flow channel (15) and the third flow channel (16) respectively correspond to a first nozzle (01), a second nozzle (02) and a third nozzle (03) on the injection molding machine.

3. The three-color three-station injection mold according to claim 2, wherein three fixed mold block chambers (17) are equidistantly arranged on the bottom end surface of the fixed mold plate (13) along the circumferential direction, and a first mold cavity (18) is correspondingly arranged in each fixed mold block chamber (17);

The first runner (14) and the second runner (15) are respectively provided with three flow dividing channels, each flow dividing channel is respectively corresponding to a first die cavity (18) in each fixed die block cavity (17), and the third runner (16) is provided with one corresponding first die cavity (18) in one fixed die block cavity (17).

4. A three-color three-station injection mold according to claim 3, wherein the lower mold (20) comprises a lower bottom plate (21), a supporting cushion block (22) and a movable mold plate (23), the movable mold plate (23) is fixedly arranged on a movable mold rotary disc of the injection molding machine, the lower bottom plate (21), the supporting cushion block (22) and the movable mold plate (23) are sequentially and fixedly connected, three movable mold cavities (24) are formed in the top end of the movable mold plate (23), a second mold cavity (25) is detachably arranged in each movable mold cavity (24) through bolts, and the second mold cavities (25) and the first mold cavities (18) are correspondingly arranged.

5. The three-color three-station injection mold according to claim 4, wherein the edges of the two sides of the top end of the second mold cavity (25) are provided with positioning guide grooves (26) in a penetrating manner, positioning guide blocks (27) are arranged in the movable mold cavity (24) in a matched manner with the positioning guide grooves (26), side mold cores (28) are fixedly arranged on the two sides of the interior of the movable mold cavity (24), and side mold cavities (29) are correspondingly formed on the second mold cavity (25) and the side mold cores (28).

6. The three-color three-station injection mold according to claim 4, wherein the jacking push rods (31) are distributed in a matrix, the top ends of the jacking push rods (31) penetrate through the movable mold cavity (24) and are arranged in through holes (210) formed in the second mold cavity (25), and the top ends of the jacking push rods (31) are flush with the inner mold surface of the second mold cavity (25).

7. The three-color three-station injection mold according to claim 4, wherein the oil cylinder (36) is fixedly arranged at the top end of the lower base plate (21), and the oil cylinder (36) is positioned at the outer side of the supporting cushion block (22).

8. The three-color three-station injection mold according to claim 4, wherein a positioning cone block (19) is fixedly arranged in the middle of the bottom end of the fixed mold plate (13), and a positioning groove (211) is correspondingly formed in the top end of the movable mold plate (23) and the positioning cone block (19).

9. The three-color three-station injection mold according to claim 4, wherein a group of guide posts (110) are respectively arranged on one side of the bottom surface of the fixed mold plate (13) located in the fixed mold block cavity (17), each group of guide posts (110) are respectively distributed along the circumferential direction at equal intervals, two guide posts (110) are arranged in each group, and slots (212) for accommodating insertion of the guide posts (110) are correspondingly formed in the movable mold plate (23) corresponding to the guide posts (110).

10. A three-color three-station injection mold molding process applied to the three-color three-station injection mold according to any one of claims 1 to 9, comprising the following steps: