Double-color injection mold

Abstract

The utility model provides a double-color injection mold, which belongs to the technical field of injection molds, and comprises a lower mold seat, an upper mold seat arranged above the lower mold seat, an upper supporting seat arranged above the upper mold seat, a lower supporting seat arranged below the lower mold seat, and a rotating mechanism arranged below the lower mold seat, and the linkage mechanism is fixedly mounted at the top of the rotating mechanism. Through the arrangement of the rotating mechanism, the mold can periodically, stably and smoothly rotate in the injection molding process, the intermittent gear drives the matching gear at the top to realize intermittent rotation, and the matching gear drives the two groups of mold main bodies at the top to exchange positions, so that two times of injection molding are carried out; the rotation mode can ensure that two different materials are filled in the mold according to a preset sequence and accurate positions, and the shutdown cost in the production process is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds, and particularly relates to a two-color injection mold. Background Art

[0002] A two-color injection mold refers to a device that injects two different colors and types of plastics, mostly a combination of a soft plastic and a hard plastic, in a certain order through a two-color injection molding machine, so as to organically combine the two plastics into a complete product. The two-color injection mold is an essential device for the above injection process.

[0003] In the existing two-color injection mold, the rotation speed of the rotation mechanism is relatively fast, and it cannot maintain precise control during the rotation process. It is easy to have a deviation in the alignment between the injection port and the injection pipe, resulting in the inability of the injection mold to smoothly perform two injections. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a two-color injection mold, aiming to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A two-color injection mold includes a lower mold base, an upper mold base is arranged above the lower mold base, an upper support base is arranged above the upper mold base, and a lower support base is arranged below the lower mold base. It further includes:

[0007] A rotation mechanism, which is arranged below the lower mold base;

[0008] A linkage mechanism, which is fixedly installed on the top of the rotation mechanism.

[0009] As a preferred scheme of the utility model, the rotation mechanism includes a base, an input shaft, an incomplete gear, a motor, a mating gear, a turntable and an output shaft. The base is fixedly installed below the lower mold base, the input shaft is fixedly installed inside the base, the incomplete gear is fixedly installed on the top of the input shaft, the motor is fixedly installed at the bottom of the input shaft, the mating gear is meshed and connected to one side of the incomplete gear, the turntable is fixedly installed on the top of the mating gear, and the output shaft is fixedly installed between the mating gear and the turntable.

[0010] As a preferred scheme of the utility model, the rotation mechanism further includes a limit groove, a ball, a limiting part and a fixing component. The limit groove is opened on the outer ring of the top of the base, the ball is fixedly installed on both sides of the inner cavity of the limit groove, the limiting part is arranged at the bottom of the turntable, and the fixing component is fixedly installed on the top of the turntable.

[0011] As a preferred solution of the present utility model, the linkage mechanism includes a cylinder, a fixing plate and a connecting cylinder. The cylinders are fixedly installed at the four corners of the turntable. The fixing plate is fixedly installed on the top of the cylinder and fixedly connected to the top of the upper support seat. The connecting cylinders are fixedly installed at the four corners of the fixing plate.

[0012] As a preferred solution of the present utility model, cushion blocks are fixedly installed on both the left and right sides of the bottom of the lower die base. A thimble plate is fixedly installed in the middle of the two cushion blocks. A push plate is fixedly connected to the bottom of the thimble plate.

[0013] As a preferred solution of the present utility model, a return spring is fixedly installed on the top of the thimble plate. A guide rod is fixedly installed in the inner cavity of the return spring. Column sleeves are fixedly installed at the four corners inside the lower die base. Guide columns are movably installed in the inner cavities of the column sleeves.

[0014] As a preferred solution of the present utility model, a positioning ring is fixedly installed in the middle of the top of the upper support seat. The positioning ring is fixedly connected to the upper support seat through fastening bolts. A sprue bushing is fixedly installed at the bottom of the positioning ring.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] Through the setting of the rotating mechanism, the mold rotates periodically, stably and smoothly during the injection molding process. The incomplete gear drives the mating gear at the top to achieve intermittent rotation. The mating gear drives the two groups of mold bodies at the top to exchange positions, so as to perform two injections. This rotation method can ensure that two different materials are filled in the mold in a predetermined order and precise positions, reducing the downtime cost during the production process. At the same time, the high precision and stability of this mechanism also ensure the quality consistency of each batch of products, meeting the strict requirements of the market for high-quality and high-efficiency production. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0018] Figure 1 is the overall structural schematic diagram of the present utility model;

[0019] Figure 2 is the structural schematic diagram of the linkage mechanism of the present utility model;

[0020] Figure 3Schematic structural diagram of the rotating mechanism of the present utility model;

[0021] Figure 4 Exploded view of the partial structure of the present utility model.

[0022] In the figure: 1, lower die base; 2, upper die base; 3, upper support base; 4, lower support base; 5, rotating mechanism; 501, base; 502, input shaft; 503, incomplete gear; 504, motor; 505, mating gear; 506, turntable; 507, output shaft; 508, limiting groove; 509, ball; 5010, limiting part; 5011, fixing component; 6, linkage mechanism; 601, cylinder; 602, fixing plate; 603, connecting cylinder; 7, cushion block; 8, ejector plate; 9, push plate; 10, return spring; 11, guide rod; 12, bushing; 13, guide pillar; 14, locating ring; 15, fastening bolt; 16, sprue bushing. Detailed implementation manners

[0023] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific implementation manners of the present utility model will be given in conjunction with the accompanying drawings of the specification.

[0024] In the following description, many specific details are set forth to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0025] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present utility model. The "in one embodiment" that appears in different places in this specification does not all refer to the same embodiment, nor is it an embodiment that is separate or selectively mutually exclusive with other embodiments. Embodiment 1

[0026] As Figures 1-4 shown, this is the first embodiment of the present utility model. This embodiment provides a two-color injection mold, including a lower die base 1, an upper die base 2 is arranged above the lower die base 1, an upper support base 3 is arranged above the upper die base 2, a lower support base 4 is arranged below the lower die base 1, and further includes:

[0027] A rotating mechanism 5, the rotating mechanism 5 is arranged below the lower die base 1;

[0028] A linkage mechanism 6, the linkage mechanism 6 is fixedly installed on the top of the rotating mechanism 5.

[0029] As Figure 1As shown, the rotating mechanism 5 realizes the precise positioning of the mold and the orderly injection of two different materials through intermittent rotation, enabling the mold to complete the alternating injection and molding of the two materials successively, thus improving the reliability and safety of the operation. Embodiment 2

[0030] Refer to Figure 3 , which is the second embodiment of the present utility model, and this embodiment is based on the previous embodiment.

[0031] In this embodiment, the rotating mechanism 5 includes a base 501, an input shaft 502, an incomplete gear 503, a motor 504, a mating gear 505, a turntable 506 and an output shaft 507. The base 501 is fixedly installed below the lower mold base 1. The input shaft 502 is fixedly installed inside the base 501. The incomplete gear 503 is fixedly installed on the top of the input shaft 502. The motor 504 is fixedly installed at the bottom of the input shaft 502. The mating gear 505 is meshed and connected to one side of the incomplete gear 503. The turntable 506 is fixedly installed on the top of the mating gear 505. The output shaft 507 is fixedly installed between the mating gear 505 and the turntable 506. The rotating mechanism 5 further includes a limiting groove 508, a ball 509, a limiting portion 5010 and a fixing component 5011. The limiting groove 508 is opened on the outer ring of the top of the base 501. The ball 509 is fixedly installed on both sides of the inner cavity of the limiting groove 508. The limiting portion 5010 is arranged at the bottom of the turntable 506. The fixing component 5011 is fixedly installed on the top of the turntable 506.

[0032] As Figure 3 shown, the base 501 is used to support and fix the rotating mechanism 5. Start the motor 504, and the motor 504 drives the incomplete gear 503 to rotate through the output shaft 507. The convex teeth on the outside of the incomplete gear 503 are partially meshed and connected with the convex teeth of the mating gear 505. During the continuous rotation of the incomplete gear 503, the mating gear 505 is driven to rotate intermittently. The mating gear 505 drives the turntable 506 and the mold on the top to rotate 180 degrees, so that the injection port of the mold is accurately aligned with the injection pipe, realizing precise injection. Embodiment 3

[0033] Refer to Figure 2 and Figure 4 , which is the third embodiment of the present utility model, and this embodiment is based on the previous two embodiments.

[0034] In this embodiment, the linkage mechanism 6 includes a cylinder 601, a fixing plate 602, and a connecting cylinder 603. The cylinders 601 are fixedly installed at the four corners of the turntable 506. The fixing plate 602 is fixedly installed on the top of the cylinder 601 and is fixedly connected to the top of the upper support seat 3. The connecting cylinders 603 are fixedly installed at the four corners of the fixing plate 602. On the left and right sides of the bottom of the lower die base 1, two cushion blocks 7 are fixedly installed. In the middle of the two cushion blocks 7, a thimble plate 8 is fixedly installed. The bottom of the thimble plate 8 is fixedly connected to a push plate 9. On the top of the thimble plate 8, a return spring 10 is fixedly installed. Inside the cavity of the return spring 10, a guide rod 11 is fixedly installed. At the four corners inside the lower die base 1, a bushing 12 is fixedly installed. Inside the cavity of the bushing 12, a guide post 13 is movably installed. In the middle of the top of the upper support seat 3, a locating ring 14 is fixedly installed. The locating ring 14 is fixedly connected to the upper support seat 3 through a fastening bolt 15. At the bottom of the locating ring 14, a sprue bushing 16 is fixedly installed.

[0035] As Figure 2 and Figure 4 shown, by setting the linkage mechanism 6, the upper die base 2 and the lower die base 1 in the mold can be driven to rotate synchronously, and secondary injection molding can be carried out in the state where the mold is not opened, improving the production quality of the product.

[0036] During use, the two injection molding devices are fixed in the fixing component 5011 on the top of the turntable 506, and at the same time, the consistency of the closing height and the central position of the mold is ensured. First, one of the molds is aligned with the injection pipe for the first injection molding to form a part of the product. Then, the rotating mechanism 5 drives the mold device on the top to rotate 180 degrees and move to the second injection molding position for the second injection molding. After the second injection molding is completed, the cylinder 601 drives the upper die base 2 and the fixing plate 602 to rise, and the plastic part is ejected from the lower die base 1 by the thimble.

[0037] In summary: By setting the rotating mechanism 5, the mold can be rotated periodically, stably and smoothly during the injection molding process. The incomplete gear 503 drives the mating gear 505 on the top to achieve intermittent rotation. The mating gear 505 drives the two sets of mold bodies on the top to exchange positions, so as to carry out two injection moldings. This rotation method can ensure that two different materials are filled in the mold in a predetermined order and precise positions, reducing the downtime cost during the production process. At the same time, the high precision and stability of this mechanism also ensure the quality consistency of each batch of products, meeting the strict requirements of the market for high-quality and high-efficiency production.

Claims

1. A two-color injection mold, characterized in that: The invention comprises a lower die base (1), an upper die base (2) is arranged above the lower die base (1), an upper support base (3) is arranged above the upper die base (2), and a lower support base (4) is arranged below the lower die base (1), and further comprises: A rotating mechanism (5), wherein the rotating mechanism (5) is arranged below the lower die base (1); A linkage mechanism (6), wherein the linkage mechanism (6) is fixedly mounted on the top of the rotating mechanism (5).

2. A two-color injection mold according to claim 1, characterized in that: The rotating mechanism (5) comprises a base (501), an input shaft (502), an incomplete gear (503), a motor (504), a matching gear (505), a turntable (506) and an output shaft (507), wherein the base (501) is fixedly mounted below the lower die base (1), the input shaft (502) is fixedly mounted inside the base (501), the incomplete gear (503) is fixedly mounted on the top of the input shaft (502), the motor (504) is fixedly mounted on the bottom of the input shaft (502), the matching gear (505) is meshedly connected to one side of the incomplete gear (503), the turntable (506) is fixedly mounted on the top of the matching gear (505), and the output shaft (507) is fixedly mounted between the matching gear (505) and the turntable (506).

3. A two-color injection mold according to claim 1, characterized in that: The rotating mechanism (5) further comprises a limiting groove (508), a ball (509), a limiting portion (5010) and a fixing assembly (5011); the limiting groove (508) is provided in an outer ring at the top of the base (501); the ball (509) is fixedly mounted on both sides of an inner cavity of the limiting groove (508); the limiting portion (5010) is arranged at the bottom of the rotating disk (506); and the fixing assembly (5011) is fixedly mounted on the top of the rotating disk (506).

4. A two-color injection mold according to claim 1, characterized in that: The linkage mechanism (6) comprises a cylinder (601), a fixing plate (602) and a connecting tube (603); the cylinder (601) is fixedly mounted on the four corners of the rotating disk (506); the fixing plate (602) is fixedly mounted on the top of the cylinder (601) and fixedly connected to the top of the upper support seat (3); and the connecting tube (603) is fixedly mounted on the four corners of the fixing plate (602).

5. A two-color injection mold according to claim 1, characterized in that: Cushion blocks (7) are fixedly mounted on both left and right sides of the bottom of the lower die base (1), an ejector plate (8) is fixedly mounted between the middle portions of the two cushion blocks (7), and a push plate (9) is fixedly connected to the bottom of the ejector plate (8).

6. A two-color injection mold according to claim 5, characterized in that: A return spring (10) is fixedly mounted on the top of the ejector plate (8), a guide rod (11) is fixedly mounted in the inner cavity of the return spring (10), column sleeves (12) are fixedly mounted at the four corners inside the lower die seat (1), and a guide column (13) is movably mounted in the inner cavity of the column sleeve (12).

7. A two-color injection mold according to claim 1, characterized in that: A positioning ring (14) is fixedly mounted on the middle portion of the top of the upper support seat (3); the positioning ring (14) is fixedly connected to the upper support seat (3) via a fastening bolt (15); and a sprue sleeve (16) is fixedly mounted on the bottom of the positioning ring (14).

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