Double-color mold

Abstract

The utility model belongs to the technical field of molds, and particularly relates to a double-color mold. According to the technical scheme, the double-color mold comprises a mold A and a mold B. The mold A comprises a panel, a fixed mold base plate, a mold A fixed mold plate, a push plate, a movable mold unit and a base which are sequentially arranged from top to bottom, the mold B comprises a panel, a fixed mold base plate, a mold B fixed mold plate, a push plate, a movable mold unit and a base which are sequentially arranged from top to bottom, and a hot runner system is arranged in the fixed mold base plate. An ejection unit for ejecting the push plate is arranged in the base; a first-color product is obtained through injection molding of a cavity defined by the A mold fixed mold plate and the movable mold unit, a second-color product is obtained through injection molding of a cavity defined by the B mold fixed mold plate and the first-color product, and the first-color product and the second-color product are combined to form a double-color product. The utility model provides a die capable of producing double-color products.

Description

Technical Field

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

[0002] An injection mold is a tool used to produce plastic products; it also gives them a complete structure and precise dimensions. Injection molding is a processing method used for mass production of complex parts. Specifically, the process involves injecting heated, molten plastic into a mold cavity under high pressure using an injection molding machine. After cooling and solidification, the resulting molded product is formed.

[0003] Patent application number CN202010356131.9 discloses a mold for integrally forming a cup and a three-dimensional pattern on the cup. The mold comprises an upper mold assembly and a lower mold assembly. A core cylinder for forming the inner cavity of the cup is fixed in the middle of the top surface of the lower mold assembly. Two symmetrical first forming sliders are provided on the upper outer periphery of the core cylinder. A first mold cavity is formed between the two first forming sliders and the core cylinder. The inner surfaces of the two first forming sliders fit together to form a second mold cavity. At least three second forming sliders are provided in a circular array on the outer periphery of the bottom of the core cylinder. A third mold cavity is formed between the arc-shaped inner surfaces of the second forming sliders and the outer periphery of the bottom of the core cylinder. The second forming slider is placed on the top surface of the lower mold assembly. Both the third and second mold cavities are connected to the first mold cavity. The second forming slider is slidably mounted on the top surface of the lower mold assembly, and the first forming slider is slidably mounted on the bottom surface of the upper mold assembly. This mold is suitable for mass production and improving production efficiency.

[0004] However, the above mold can only produce single-color products and cannot produce two-color products through two injection molding. Utility Model Content

[0005] In order to solve the above problems existing in the prior art, the purpose of the present invention is to provide a mold that can produce two-color products.

[0006] The technical solution adopted by this utility model is:

[0007] A two-color mold comprises an A mold and a B mold, wherein the A mold comprises a panel, a fixed mold pad, an A mold fixed platen, a push plate, a movable mold unit and a base, which are arranged in sequence from top to bottom; the B mold comprises a panel, a fixed mold pad, a B mold fixed platen, a push plate, a movable mold unit and a base, which are arranged in sequence from top to bottom; a hot runner system is arranged in the fixed mold pad, and an ejection unit for lifting the push plate is arranged in the base; a first-color product is obtained by injection molding a cavity enclosed by the A mold fixed platen and the movable mold unit, and a second-color product is obtained by injection molding a cavity enclosed by the B mold fixed platen and the first-color product; the first-color product and the second-color product are combined to form a two-color product.

[0008] In this utility model, molds A and B differ only in their fixed mold plates; the rest of their structures are identical. Mold A produces a first-color product, which remains on the movable mold plate of mold A. The injection molding machine's mold plate rotates 180°, closing the movable mold of mold A with the fixed mold of mold B. Mold B then produces a two-color product by injection molding the first-color product, continuing the cycle of molds A and B.

[0009] In this utility model, the cavity formed by the fixed mold plate of mold A and the movable mold unit produces a first-color product, while the cavity formed by the fixed mold plate of mold B and the first-color product produces a second-color product. This allows for the injection molding of two-color products based on the first-color product. The two-color mold provides stable quality, high product precision, and beautiful appearance.

[0010] As a preferred embodiment of the present invention, the base includes a bottom plate, on which two support plates are provided. The top surfaces of the support plates mate with the bottom surface of the movable mold unit. The ejection unit is disposed between the two support plates, and the bottom plate is provided with an ejector rod hole. A plurality of reinforcing columns are fixed to the bottom plate, which pass through the ejection unit. A plurality of guide columns are also fixed to the bottom plate, which pass through the ejection unit. The ejection unit is driven by the ejector rod holes. The two support plates form a space for the ejection unit to move, and the support plates can guide the ejection unit. The reinforcing columns provide stable support for the ejection unit, and the guide columns provide guidance for the ejection unit.

[0011] As a preferred embodiment of the present invention, the ejector unit includes an ejector plate, to which is fixed an ejector panel. A plurality of ejector rods are fixed to the ejector panel. The ejector rods pass through the movable mold unit and contact the push plate. During demolding, the ejector rods push the push plate upward, separating the movable mold unit from the fixed mold plate.

[0012] As a preferred solution of the present invention, a spring is sleeved on the ejector rod, and the spring is pressed between the ejector unit and the movable mold unit.

[0013] The spring is compressed between the ejector unit and the movable mold unit to reduce product deformation and improve product quality. The spring can adaptively adjust according to the deformation of each mold workpiece, achieving fine-tuning of the mold gap, ensuring mold stability and precision, thereby achieving better product quality.

[0014] Springs can protect molds and extend their lifespan. They have a certain degree of elasticity and cushioning properties, allowing them to withstand greater impact and extrusion forces during mold operation, reducing vibration and fatigue damage inside the mold, thereby increasing its lifespan and stability.

[0015] As a preferred embodiment of the present invention, the movable mold unit includes a movable mold backing plate, to which a movable mold plate is fixed. The movable mold plate is also fixed with several guide rods. The guide rods of mold A pass through a push plate and are inserted into the fixed mold plate of mold A. The guide rods of mold B pass through a push plate and are inserted into the fixed mold plate of mold B. The product-forming cylinder passes through the push plate and is inserted into the mold cavity of the fixed mold plate. The guide rods ensure accurate positioning, ensuring precise mold closing.

[0016] As a preferred embodiment of the present invention, the push plate is equipped with several balancing blocks on its upper surface, and the lower surfaces of both the fixed mold plates of mold A and mold B are equipped with several balancing inserts. The balancing blocks on the push plate cooperate with the balancing inserts on the fixed mold plates, making mold closing smoother and less prone to damage.

[0017] As a preferred solution of the present invention, the push plate is provided with a plurality of wear-resistant blocks, which can reduce damage to the mold.

[0018] As a preferred solution of this utility model, the fixed mold platen of mold A, the fixed mold platen of mold B, and the movable mold unit are all equipped with water supply nozzles. The mold water supply system mainly controls the mold temperature to ensure normal operation of the mold and helps stabilize the product dimensions to prevent deformation during the production process.

[0019] As a preferred solution of the present invention, a positioning ring is provided on the panel to cooperate with the hot runner system, the glue inlet of the hot runner system of mold A extends into the fixed mold plate of mold A, and the glue inlet of the hot runner system of mold B extends into the fixed mold plate of mold B.

[0020] The beneficial effects of the utility model are:

[0021] 1. In this utility model, the cavity formed by the fixed mold plate (A) and the movable mold unit produces a first-color product, while the cavity formed by the fixed mold plate (B) and the first-color product produces a second-color product. This allows for the injection molding of two-color products based on the first-color product. This two-color mold provides stable quality, high product precision, and beautiful appearance.

[0022] 2. In this utility model, molds A and B differ only in their fixed mold plates; the rest of their structures are identical. Mold A produces a first-color product, which remains on the movable mold plate of mold A. The injection molding machine's mold plate rotates 180°, closing the movable mold of mold A with the fixed mold of mold B. Mold B then produces a two-color product over the first-color product, continuing the cycle of molds A and B. This utility model ensures that one mold set can produce the first-color product while the other set is producing the second-color product, improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the utility model;

[0024] Figure 2 This is the exploded view of Model A;

[0025] Figure 3 This is the exploded view of the B model;

[0026] Figure 4 It is a structural diagram of the base in the first direction;

[0027] Figure 5 It is a structural diagram of the second direction of the base;

[0028] Figure 6 It is the structure of the ejection unit;

[0029] Figure 7 It is a structural diagram of the movable mold unit;

[0030] Figure 8 It is a structural diagram of the push plate;

[0031] Figure 9 It is a structural diagram of a fixed template A;

[0032] Figure 10 It is a structural diagram of the B-mode fixed template;

[0033] Figure 11 It is a structural diagram of the fixed die pad;

[0034] Figure 12 It is a structural diagram of the hot runner system;

[0035] Figure 13 It is a structural diagram of the panel and positioning ring;

[0036] Figure 14 This is the main view of model A;

[0037] Figure 15 yes Figure 14 Cross-sectional view at CC;

[0038] Figure 16 This is the main view of the B model;

[0039] Figure 17 yes Figure 16 Cross-sectional view at DD in the middle;

[0040] Figure 18 This is a schematic structural diagram of the utility model when the movable mold of mold A produces the first color product;

[0041] Figure 19 It is a schematic structural diagram of the utility model after rotation;

[0042] Figure 20 This is a structural diagram of the utility model when the movable mold of mold A produces the second color product;

[0043] Figure 21 It is a structural diagram of a two-color product;

[0044] Figure 22 yes Figure 21 Cross-sectional view at EE.

[0045] In the figure: 1-panel; 2-fixed mold pad; 3-A mold fixed plate; 4-push plate; 5-movable mold unit; 6-base; 7-B mold fixed plate; 8-hot runner system; 9-ejector unit; 11-positioning ring; 31-balancing insert; 32-water transport nozzle; 41-balancing block; 42-wear-resistant block; 61-bottom plate; 62-support plate; 63-ejector rod hole; 64-reinforcement column; 65-guide column; 51-movable mold pad; 52-movable plate; 53-product molding column; 54-guide rod; 91-ejector plate; 92-ejector panel; 93-ejector rod; 94-spring; a1-first color product; a2-second color product. DETAILED DESCRIPTION

[0046] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0047] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without inventive effort are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features therein may be combined with each other unless there is a conflict.

[0048] like Figures 1 to 22As shown, the two-color mold of this embodiment includes an A mold and a B mold. The A mold includes a panel 1, a fixed mold pad 2, an A mold fixed mold plate 3, a push plate 4, a movable mold unit 5 and a base 6 arranged in sequence from top to bottom. The A mold includes a panel 1, a fixed mold pad 2, a B mold fixed mold plate 7, a push plate 4, a movable mold unit 5 and a base 6 arranged in sequence from top to bottom. A hot runner system 8 is provided in the fixed mold pad 2, and an ejection unit 9 for lifting the push plate 4 is provided in the base 6; the cavity surrounded by the A mold fixed mold plate 3 and the movable mold unit 5 is injection molded to obtain a first color product a1, and the cavity surrounded by the B mold fixed mold plate 7 and the first color product a1 is injection molded to obtain a second color product a2. The first color product a1 and the second color product a2 are combined into a two-color product.

[0049] In this utility model, molds A and B differ only in their fixed mold plates; the rest of their structures are identical. Mold A produces a first-color product a1, which remains on the movable mold plate of mold A. The injection molding machine's mold plate rotates 180°, closing the movable mold plate of mold A with the fixed mold plate of mold B. Mold B then produces a two-color product by injection molding the first-color product a1, continuing the cycle of molds A and B.

[0050] In this utility model, the cavity formed by the fixed mold plate 3 and the movable mold unit 5 of mold A produces a first-color product a1. The cavity formed by the fixed mold plate 7 and the first-color product a1 produces a second-color product a2. This allows for the injection molding of a two-color product based on the first-color product a1. This two-color mold provides stable quality, high product precision, and beautiful appearance.

[0051] Specifically, the base 6 includes a bottom plate 61, on which are disposed two support plates 62. The top surfaces of the support plates 62 cooperate with the bottom surface of the movable mold unit 5. The ejection unit 9 is disposed between the two support plates 62, and the bottom plate 61 is provided with an ejector rod hole 63. A plurality of reinforcing columns 64 are fixed to the bottom plate 61, which pass through the ejection unit 9. A plurality of guide columns 65 are also fixed to the bottom plate 61, which pass through the ejection unit 9. The ejection unit 9 is driven by the ejector rod holes 63. The two support plates 62 support and form a space for the ejection unit 9 to move, and the support plates 62 can guide the ejection unit 9. The reinforcing columns 64 provide stable support for the ejection unit 9, and the guide columns 65 guide the ejection unit 9.

[0052] Specifically, the ejector unit 9 includes an ejector plate 91, to which is fixed an ejector panel 92. Several ejector rods 93 are fixed to the ejector panel 92. The ejector rods 93 pass through the movable mold unit 5 and contact the push plate 4. During demolding, the ejector rods 93 push the push plate 4 upward, separating the movable mold unit 5 from the fixed mold plate.

[0053] Furthermore, a spring 94 is sleeved on the ejection rod 93 , and the spring 94 is pressed tightly between the ejection unit 9 and the movable mold unit 5 .

[0054] Spring 94 is compressed between ejector unit 9 and movable mold unit 5 to reduce product deformation and improve product quality. Spring 94 can adaptively adjust according to the deformation of each mold workpiece, achieving fine-tuning of the mold gap, ensuring mold stability and precision, thereby achieving better product quality.

[0055] Spring 94 protects the mold and extends its lifespan. Spring 94 has a certain degree of elasticity and cushioning properties, allowing it to withstand greater impact and extrusion forces during mold operation, reducing vibration and fatigue damage within the mold, thereby increasing the mold's lifespan and stability.

[0056] Specifically, the movable mold unit 5 includes a movable mold backing plate 51, to which a movable mold plate 52 is fixed. A product forming cylinder 53 is fixed to the movable mold plate 52. Several guide rods 54 are also fixed to the movable mold plate 52. The guide rods 54 of the A mold pass through the push plate 4 and are inserted into the A mold fixed mold plate 3. The guide rods 54 of the B mold pass through the push plate 4 and are inserted into the B mold fixed mold plate 7. The product forming cylinder 53 passes through the push plate 4 and is inserted into the mold cavity of the fixed mold plate. The guide rods 54 ensure accurate positioning, ensuring precise mold closing.

[0057] Furthermore, the upper surface of the push plate 4 is provided with a plurality of balancing blocks 41, and the lower surfaces of the A-mold fixed plate 3 and the B-mold fixed plate 7 are both provided with a plurality of balancing inserts 31. The balancing blocks 41 on the push plate 4 cooperate with the balancing inserts 31 on the fixed plate, making mold closing smoother and more stable, and reducing damage to the mold.

[0058] Furthermore, a plurality of wear-resistant blocks 42 are provided on the push plate 4. The wear-resistant blocks 42 are provided to reduce damage to the mold.

[0059] Furthermore, the A-mold fixed platen 3, the B-mold fixed platen 7, and the movable mold unit 5 are all equipped with water supply nozzles 32. The mold water supply system mainly controls the mold temperature to ensure the normal use of the mold and helps stabilize the product size to prevent deformation during the production process.

[0060] Furthermore, a positioning ring 11 is provided on the panel 1 to cooperate with the hot runner system 8. The glue inlet of the hot runner system 8 of the A mold extends into the A mold fixed template 3, and the glue inlet of the hot runner system 8 of the B mold extends into the B mold fixed template 7.

[0061] The method for using the two-color mold of this embodiment includes the following steps:

[0062] The fixed mold of mold A includes a panel 1, a hot runner unit, a fixed mold backing plate 2, a fixed mold plate 3 of mold A, and a push plate 4; the movable mold of mold A includes a movable mold unit 5, an ejector unit 9, and a base 6; the fixed mold of mold B includes a panel 1, a hot runner unit, a fixed mold backing plate 2, a fixed mold plate 7 of mold B, and a push plate 4; the movable mold of mold B includes a movable mold unit 5, an ejector unit 9, and a base 6;

[0063] A mold is injected to produce the first color product a1, and the first color product a1 remains on the movable mold of mold A;

[0064] The injection molding machine template rotates 180 degrees, the movable mold A is closed with the fixed mold B, and the B mold is injected onto the first color product a1 to obtain a two-color product. The A mold and the B mold are cyclically produced.

[0065] The present invention is not limited to the above-mentioned optional implementation methods. Anyone can derive various other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that falls within the scope defined by the claims of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A two-color mold, characterized by: The invention comprises an A mold and a B mold, wherein the A mold comprises a panel (1), a fixed mold pad (2), an A mold fixed mold plate (3), a push plate (4), a movable mold unit (5) and a base (6) which are arranged in sequence from top to bottom, and the B mold comprises a panel (1), a fixed mold pad (2), a B mold fixed mold plate (7), a push plate (4), a movable mold unit (5) and a base (6) which are arranged in sequence from top to bottom, a hot runner system (8) is arranged in the fixed mold pad (2), and an ejection unit (9) for lifting the push plate (4) is arranged in the base (6); a first color product (a1) is obtained by injection molding a mold cavity enclosed by the A mold fixed mold plate (3) and the movable mold unit (5), and a second color product (a2) is obtained by injection molding a mold cavity enclosed by the B mold fixed mold plate (7) and the first color product (a1).

2. A two-color mold according to claim 1, characterized in that: The base (6) includes a bottom plate (61), two support plates (62) are arranged on the bottom plate (61), the top surfaces of the support plates cooperate with the bottom surface of the movable mold unit (5), the ejection unit (9) is arranged between the two support plates (62), and an ejection rod hole (63) is provided on the bottom plate (61); a plurality of reinforcing columns (64) are fixed on the bottom plate (61), and the reinforcing columns (64) pass through the ejection unit (9); a plurality of guide columns (65) are also fixed on the bottom plate (61), and the guide columns (65) pass through the ejection unit (9).

3. The two-color mold according to claim 1, characterized in that: The ejection unit (9) comprises an ejection plate (91), an ejection panel (92) is fixed on the ejection plate (91), and a plurality of ejection rods (93) are fixed on the ejection panel (92). The ejection rods (93) pass through the movable mold unit (5) and contact the push plate (4).

4. A two-color mold according to claim 3, characterized in that: The ejection rod (93) is sleeved with a spring (94), and the spring (94) is pressed tightly between the ejection unit (9) and the movable mold unit (5).

5. The two-color mold according to claim 1, characterized in that: The movable mold unit (5) comprises a movable mold pad (51), a movable mold plate (52) is fixed on the movable mold pad (51), a product forming column (53) is fixed on the movable mold plate (52), and a plurality of guide rods (54) are also fixed on the movable mold plate (52). The guide rods (54) of the A mold pass through the push plate (4) and are inserted into the A mold fixed mold plate (3), and the guide rods (54) of the B mold pass through the push plate (4) and are inserted into the B mold fixed mold plate (7).

6. The two-color mold according to claim 1, characterized in that: The upper surface of the push plate (4) is provided with a plurality of balancing blocks (41), and the lower surface of the A-mold fixed template (3) and the lower surface of the B-mold fixed template (7) are both provided with a plurality of balancing inserts (31), and the balancing blocks (41) cooperate with the balancing inserts (31).

7. The two-color mold according to claim 1, characterized in that: A plurality of wear-resistant blocks (42) are provided on the push plate (4).

8. The two-color mold according to claim 1, characterized in that: The A-mold fixed template (3), the B-mold fixed template (7) and the movable mold unit (5) are all provided with water-transporting nozzles (32).

9. The two-color mold according to claim 1, characterized in that: The panel (1) is provided with a positioning ring (11) that cooperates with the hot runner system (8); the glue inlet of the hot runner system (8) of the A mold extends into the A mold fixed template (3); and the glue inlet of the hot runner system (8) of the B mold extends into the B mold fixed template (7).

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