Improved double-color mold

Abstract

The utility model relates to the technical field of molds, in particular to an improved double-color mold. The improved double-color mold comprises an upper mold and a lower mold. Wherein a first mold core and a second mold core are arranged on the mold core plate of the upper mold plate. And the cavity plate on the lower template is provided with one or more cavities which can be rotated and alternately used. And the triggering part of the upper die downwards presses the withdrawing part of the insert pin module, so that the insert pin can be withdrawn from the cavity. When the framework is subjected to injection molding, the insert pin penetrates out of the cavity and abuts against the first mold core, so that a through injection molding hole is formed in the framework. And when the flexible glue is injected, the cavity with the framework in the injection molding mode rotates to the position opposite to the second core. And after secondary mold closing, the triggering part of the upper mold downwards presses the withdrawing part of the insert pin module, so that the insert pin retreats from the cavity. And after the insert pin retreats, the secondary injection molding material can flow to the bottom position of the framework from the injection molding hole, so that the framework can be better wrapped by the flexible glue, and the service life of the product is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an improved two-color mold. Background Art

[0002] In our daily life, we often see two-color plastic products, such as toothbrushes, toy shovels, etc. When these plastic products are injection molded, the skeleton is usually injected first, and then the non-slip soft plastic is injected on the skeleton. In this way, the softer injection plastic will form non-slip particles to improve comfort. However, during production, some injection molds only cover the soft plastic on the skeleton during the second injection. In this way, the bond between the skeleton and the soft plastic of the product produced is low. When the soft plastic is rubbed, it may cause the soft plastic and the skeleton to separate, and the product life is shortened.

[0003] For example, patent number: CN201922027811.1 A two-color injection mold forming device specifically discloses "a two-color rubber-coated injection mold, comprising an upper panel, a female template, a male template, a mold foot, a surface needle plate, a bottom needle plate and a lower panel connected from top to bottom, a positioning ring is provided on the upper panel, a gate sleeve is concentrically provided on the positioning ring, a plurality of ejector pins and four return pins are provided on the bottom needle plate, an injection molding machine is connected to the gate sleeve, a first barrel is provided on the injection molding machine, the first barrel is connected to the gate sleeve, a second barrel is provided on the side of the injection molding machine, a manipulator track is provided on the outer side of the injection molding machine, a track slider is slidably provided on the manipulator track, a manipulator is plugged into the track slider, a hard rubber mold cavity and a soft rubber mold cavity are provided on the male template, the hard rubber mold cavity is connected to a hard rubber runner, the hard rubber runner is connected to the gate sleeve, the soft rubber mold cavity is connected to a soft rubber runner, the soft rubber runner is connected to the second barrel, sliders are provided on both sides of the hard rubber mold cavity, inclined guide pillars are slidably plugged into both sliders, and the inclined guide pillars are fixed on the female template". It can be seen that the male mold plate is provided with a hard rubber cavity and a soft rubber cavity. During injection molding, the soft rubber is wrapped on the hard rubber. When the soft rubber of the product produced by this mold is rubbed, the soft rubber and the frame may be separated, and the product life is shortened.

[0004] Another example is patent number: CN202221715336.2, a two-color overmolding mold, which specifically discloses that "the first mold cavity in the first mold is used to mold the first component of the plastic product, and the second mold cavity in the second mold is used to mold the second component of the plastic product. The first mold and the second mold are fixedly connected to the bottom plate. The equipment first injects the first mold cavity for the first time. After cooling and molding, the bottom plate rotates 180 degrees, and the equipment injects the second mold cavity for the second time. After cooling and solidification, the top plate, the upper mold plate, and the upper mold core move upward at the same time. The equipment pushes the push plate assembly upward and pushes the undercut assembly and the ejector rod upward together. While the undercut assembly and the ejector rod move upward, the plastic product and the mold cavity realize the demolding of the undercut part, and the plastic product is pushed out of the mold cavity to realize overall demolding." That is, the second soft plastic is directly injection-molded and wrapped on the skeleton of the first injection. When the soft plastic is rubbed, this product may also cause the soft plastic and the skeleton to separate, and thus the product life is relatively low. Utility Model Content

[0005] In view of this, the utility model aims to overcome the deficiencies of the prior art, and its main purpose is to provide an improved two-color mold, in which the plastic of the second injection can penetrate the frame and be wrapped around the frame, which is beneficial to improve the firmness of both and increase the service life of the product, thereby overcoming the deficiencies of the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The present application provides an improved two-color mold, comprising an upper mold and a lower mold; the upper mold comprises an upper mold plate and a core plate arranged on the upper mold plate; the core plate is provided with a first core and a second core;

[0008] The lower mold comprises a lower mold base, a lower mold plate, and a cavity plate; the lower mold plate is arranged on the lower mold base; the cavity plate is arranged on the lower mold plate; the cavity plate has at least one cavity; the cavity plate is provided with a pin inserting mold group, and the pin of the pin inserting mold group can pass through the cavity; a trigger component is arranged at the second core position; the trigger component can press down the exit component of the pin inserting mold group, and the pin can retreat from the cavity;

[0009] The first driving member is connected to the cavity plate and can lift the cavity plate; the output end of the first driving source is connected to the second driving member, and the second driving member drives the first driving member to rotate.

[0010] Preferably, the needle inserting module includes a needle inserting plate, the withdrawal component and the needle inserting plate are arranged on the needle inserting plate, the needle inserting plate can be movably arranged in the first mounting groove on the back of the cavity plate, and the head of the needle inserting plate has a recessed portion.

[0011] Preferably, the inserting pins are arranged in rows, the roots of the inserting pins are inserted into the inserting pin plate, the latch pins penetrate into the inserting pin plate, and the inserting pins are fixed to the inserting pin plate.

[0012] Preferably, the bottom of the first driving member is connected to a driving plate, and a first sensor is arranged on the motion track of the driving plate.

[0013] Preferably, the first driving member is provided with a gear; the second driving member is provided with driving teeth, and the driving teeth are meshed with the gear.

[0014] Preferably, a mounting plate is provided between the lower mold base and the lower mold plate, and a channel is formed between the lower mold plate and the mounting plate; a sliding block is provided on the inner wall of the channel, and a sliding groove is provided on the second driving member, and the sliding groove and the sliding block can slide relative to each other.

[0015] Preferably, second sensors are provided at the ends and sides of the motion track of the second driving member, and the sensing portion on the second driving member can trigger the second sensor.

[0016] Preferably, the interior of the first driving member is a hollow structure, and a first cooling pipe connected to the cavity plate is arranged inside the hollow structure.

[0017] Preferably, the core plate includes a first main core plate, and a first secondary core plate and a second secondary core plate arranged on the side of the first main core plate; the first core is arranged on the first main core plate and the first secondary core plate; the second core is arranged on the first main core plate and the second secondary core plate;

[0018] The cavity plate includes a first main cavity plate, and a first sub-cavity plate and a second sub-cavity plate arranged on the side of the first main cavity plate; the cavity is arranged in the first main cavity plate, the first sub-cavity plate, and the second sub-cavity plate; the first main cavity plate can rise relative to the first sub-cavity plate and the second sub-cavity plate.

[0019] Preferably, the first secondary mold core plate, the second secondary mold core plate, the first secondary cavity plate, and the second secondary cavity plate are all provided with a second cooling pipe; at least one of the first secondary cavity plate and the second secondary cavity plate is provided with an ejector pin. In this embodiment, the first secondary cavity plate is provided with an ejector pin, which facilitates demoulding of the product from the first secondary cavity plate.

[0020] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be known from the above technical scheme that the improved two-color mold includes an upper mold and a lower mold. Among them, the upper mold includes an upper mold plate and a core plate arranged on the upper mold plate; the core plate is provided with a first core and a second core. The lower mold includes a lower mold base, a lower mold plate, and a cavity plate; the lower mold plate is arranged on the lower mold base; the cavity plate is arranged on the lower mold plate; the cavity plate has at least one cavity. The pin inserting mold group is arranged on the cavity plate, and the pin of the pin inserting mold group can pass through the cavity. The trigger component of the upper mold presses down the exit component of the pin inserting mold group, so that the pin can retreat from the cavity. The cavity plate can be raised and lowered and rotated.

[0021] During production, the upper and lower molds are closed for the first time, the first cavity and the first core are closed, the insert pin passes through the cavity and rests against the first core, so that the skeleton formed by the first injection molding will have a through injection hole. The first driving member lifts the cavity plate, and the second driving member drives the cavity plate to rotate so that the two cavities can be swapped left and right, and then the cavity with the skeleton injected is rotated to the position corresponding to the second core, and then the mold is closed for the second time. After the second mold closing, the trigger component of the upper mold presses down the exit component of the insert pin module, so that the insert pin can retreat from the cavity, and then the second injection molding is carried out. After the insert pin retreats, the second injection plastic will flow from the injection hole to the bottom of the skeleton, so that the soft glue can also be wrapped around the bottom of the skeleton, and the soft glue and the skeleton are more firmly combined, and the soft glue will not fall off the skeleton, which is beneficial to extend the life of the product. In addition, the cooperation of multiple cavities with the first core and the second core also further improves the efficiency of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a partial structural schematic diagram of an embodiment of the utility model.

[0023] Figure 2 It is an embodiment of the utility model Figure 1 Schematic diagram of the decomposition.

[0024] Figure 3 It is a schematic diagram of a core plate of an embodiment of the utility model.

[0025] Figure 4 It is a schematic structural diagram of the lower mold part of an embodiment of the utility model.

[0026] Figure 5 It is a schematic structural diagram of the lower mold part of an embodiment of the utility model.

[0027] Figure 6 It is a schematic structural diagram of the lower mold part of an embodiment of the utility model.

[0028] Figure 7It is a schematic diagram of a pin inserting module according to an embodiment of the present utility model.

[0029] Figure 8 It is a schematic top view of the lower mold of an embodiment of the utility model.

[0030] Fig. 9 It is a schematic structural diagram of the lower mold part of an embodiment of the utility model.

[0031] Fig.10 It is a product schematic diagram of an embodiment of the utility model.

[0032] Description of the accompanying drawings:

[0033] 10, core plate 11, first main core plate 12, first secondary core plate 13, second secondary core plate 14, first core 15, second core

[0034] 20, lower mold 21, lower mold base 22, lower mold plate 23, mounting plate 210, cavity plate 211, first sub-cavity plate 212, second sub-cavity plate 213, cavity 214, second cooling pipe 215, first cooling pipe 216, first main cavity plate 217, ejector 220, first driving source 221, first driving member 222, gear 223, first sensor 224, driving plate 230, second driving member 231, driving tooth 232, slide groove 233, second sensor 234, sensing part 235, channel 236, slider

[0035] 30, needle inserting module 31, withdrawal component 32, needle inserting 33, recessed portion 34, needle inserting plate 35, latch

[0036] 40. skeleton 41. injection hole 42. soft glue. DETAILED DESCRIPTION

[0037] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0038] Please refer to Figures 1 to 10 As shown, it shows the specific structure of the preferred embodiment of the utility model, which is an improved two-color mold.

[0039] The cavity plate 210 has at least one cavity 213; the pin 32 of the pin module 30 can pass through the cavity 213; a trigger component is provided at the position of the second core 15; the trigger component can press down the exit component 31 of the pin module 30, and the pin 32 can retreat from the cavity 213. This design can reserve a through injection hole 41 for the injection-molded skeleton, which is conducive to allowing the subsequent soft glue to firmly wrap the skeleton 40 and prolong the service life of the product.

[0040] The present application provides an improved two-color mold, including an upper mold and a lower mold 20; the upper mold includes an upper mold plate and a core plate 10 arranged on the upper mold plate; the core plate 10 is provided with a first core 14 and a second core 15; the lower mold 20 includes a lower mold base 21, a lower mold plate 22, and a cavity plate 210; the lower mold plate 22 is arranged on the lower mold base 21; the cavity plate 210 is arranged on the lower mold plate 22; the cavity plate 210 has at least one cavity 213; the cavity plate 210 is provided with The pin inserting module 30, the pin inserting module 30 of which the pin inserting module 30 can pass through the cavity 213; the second core 15 is provided with a trigger component; the trigger component can press down the exit component 31 of the pin inserting module 30, and the pin inserting module 32 can retreat from the cavity 213; the first driving member 221 is connected to the cavity plate 210, and can lift the cavity plate 210; the output end of the first driving source 220 is connected to the second driving member 230, and the second driving member 230 drives the first driving member 221 to rotate. The first driving source 220 is preferably a cylinder or a hydraulic cylinder. The upper mold and the lower mold 20 are arranged in the injection molding machine, and the upper mold and the lower mold 20 can be closed together. The number of the first core 14, the second core 15, and the cavity 213 can be set as needed. In this embodiment, there are two cavities 213, corresponding to the first core 14 and the second core 15 respectively. The trigger component and the exit component 31 are preferably inserts. The cavity plate 210 rotates so that the two cavities 213 can be alternately closed with the first core 14 or the second core 15, and the skeleton 40 can be injection molded, and then the soft glue is encapsulated in the skeleton 40. This alternating working method can improve work efficiency. The preferred working steps are as follows: 1. The upper and lower molds 20 are closed for the first time, the first cavity 213 is closed with the first core 14, and the inlay needle 32 passes through the cavity 213 and abuts against the first core 14. The injection plastic of the skeleton (the first injection molding) is injected into the first cavity 213 from the injection port. The skeleton 40 is formed after the first injection plastic is cooled, and the skeleton 40 is formed with a through injection hole 41. 2. The first driving member 221 lifts the cavity plate 210, and the second driving member 230 drives the cavity plate 210 to rotate, so that the two cavities can be swapped left and right, and the cavity 213 with the skeleton injection molded is rotated to the position corresponding to the second core 15. 2. The second mold closing, the trigger component of the upper mold presses down the exit component 31 of the pin inserting module 30, so that the pin inserting 32 can withdraw from the cavity 213, leaving the injection hole 41 empty. 2. The second injection of plastic (second injection molding), the injection plastic can wrap the top and sides of the skeleton, and the injection plastic flows from the injection hole 41 to the back of the skeleton, wrapping the back of the skeleton. The soft glue and the skeleton are more firmly combined, and the soft glue will not fall off the skeleton, which is beneficial to extend the life of the product. 3. Open the mold and remove the finished product, the cavity plate 210 continues to rotate, and the cycle continues, which is also more efficient.

[0041] Preferably, the needle inserting module 30 includes a needle inserting plate 34, the exit component 31 and the needle inserting 32 are arranged on the needle inserting plate 34, the needle inserting plate 34 is movably arranged in the first mounting groove on the back of the cavity plate 210, and the head of the needle inserting 32 has a recessed portion 33. Preferably, a spring is arranged at the bottom of the needle inserting plate 34, and the spring pushes the needle inserting plate 34 to move in the first mounting groove on the back of the cavity plate 210, thereby allowing the needle inserting 32 to pass through the cavity 213. When the trigger component of the upper mold presses down the exit component 31 of the needle inserting module 30, the needle inserting plate 34 moves downward, allowing the needle inserting 32 to exit from the cavity 213. During injection molding, the head of the needle inserting 32 has a recessed portion 33 slightly lower than the bottom surface of the skeleton, which is conducive to the protrusion to form anti-slip particles. At the same time, the anti-slip particles can also play an anti-slip effect, and further improve the firmness of the combination of the soft glue and the skeleton. Preferably, the needle inserting 32 drops by about 1.5 mm.

[0042] Preferably, the pins 32 are arranged in rows, the roots of the pins 32 are inserted into the pin plate 34, the pins 35 penetrate into the pin plate 34, and the pins 32 are fixed to the pin plate 34. There are multiple rows of pins 32 in this embodiment, and one product corresponds to one row of pins 32. When the pin module 30 is assembled, the roots of the pins 32 are inserted into the pin plate 34, and then the pins 35 penetrate into the pin plate 34, so that the entire row of pins 32 can be easily assembled, and the structure is very simple. The exit component 31 is set on the pin plate 34, and the exit component 31 is pressed down, and the pins 32 are withdrawn from the cavity 213. This structure is very simple and efficient.

[0043] Preferably, the bottom of the first driving member 221 is connected to the driving plate 224, and a first sensor 223 is arranged on the motion track of the driving plate 224. The first driving member 221 is provided with a gear 222; the second driving member 230 is provided with a driving tooth 231, and the driving tooth 231 is meshed with the gear 222. The driving plate 224 can move up and down under the drive of the machine, and the first sensors 223 are arranged at the upper and lower ends of the motion track of the driving plate 224 to monitor the motion amplitude of the driving plate 224, and then detect the motion amplitude of the cavity plate 210. The driving plate 224 drives the cavity plate 210 to rise and fall through the first driving member 221. When the cavity plate 210 rises to a preset height, the output end of the first driving source 220 drives the second driving member 230 to move, and the driving tooth 231 of the second driving member 230 drives the gear 222 of the first driving member 221, so that the cavity plate 210 can rotate, and the left and right cavities 213 can be used alternately. The structure of driving the cavity plate 210 to rise, fall and rotate is very simple and efficient.

[0044] Preferably, a mounting plate 23 is provided between the lower die base 21 and the lower die plate 22, and a channel 235 is formed between the lower die plate 22 and the mounting plate 23; a slider 236 is provided on the inner wall of the channel 235, and a slide groove 232 is provided on the second driving member 230, and the slide groove 232 and the slider 236 can slide relative to each other. The slide groove 232 and the slider 236 cooperate with each other, so that the motion trajectory of the second driving member 230 can be well controlled, so that the second driving member 230 is always in linear motion, and the motion accuracy is high.

[0045] Preferably, the second sensor 233 is provided at the end and the side of the motion track of the second driving member 230, and the sensing part 234 on the second driving member 230 can trigger the second sensor 233. The second sensor 233 is used to detect the motion position of the second driving member 230, and then the rotation position of the cavity plate 210 can be determined, so as to ensure the precision of mold clamping. For example, when the sensing part 234 triggers the first second sensor 233, it is the initial state, and when the sensing part 234 triggers the second second sensor 233, it is the state where the cavity 213 is interchanged left and right.

[0046] Preferably, the first driving member 221 has a hollow structure inside, and a first cooling pipe 215 is provided inside the hollow structure and connected to the cavity plate 210. The first cooling pipe 215 is provided inside the first driving member 221 to facilitate the rotation of the cavity plate 210. A cooling medium is introduced into the first cooling pipe 215 to cool the cavity 213, which is beneficial to accelerate the molding of the product.

[0047] Preferably, the core plate 10 includes a first main core plate 11, and a first secondary core plate 12 and a second secondary core plate 13 arranged on the side of the first main core plate 11; the first core 14 is arranged on the first main core plate 11 and the first secondary core plate 12; the second core 15 is arranged on the first main core plate 11 and the second secondary core plate 13. The right side of the first main core plate 11 corresponds to the first secondary core plate 12, and the left side of the first main core plate 11 corresponds to the second secondary core plate 13. The combination of the first main core plate 11 and the first secondary core plate 12 corresponds to the core of the skeleton 40; the combination of the first main core plate 11 and the second secondary core plate 13 corresponds to the core during rubber encapsulation.

[0048] The cavity plate 210 includes a first main cavity plate 216, and a first sub-cavity plate 211 and a second sub-cavity plate 212 arranged on the side of the first main cavity plate 216; the cavity 213 is arranged on the first main cavity plate 216, the first sub-cavity plate 211, and the second sub-cavity plate 212; the first main cavity plate 216 can rise relative to the first sub-cavity plate 211 and the second sub-cavity plate 212. The right side of the first main cavity plate 216 corresponds to the first sub-cavity plate 211; the left side of the first main cavity plate 216 corresponds to the second sub-cavity plate 212. The cavity 213 is formed across the first main cavity plate 216, the first sub-cavity plate 211, and the second sub-cavity plate 212. The first driving member 221 drives the first main cavity plate 216 to rise, fall, and rotate.

[0049] Preferably, the first sub-mold core plate 12, the second sub-mold core plate 13, the first sub-mold cavity plate 211, and the second sub-mold cavity plate 212 are all provided with a second cooling pipe 214; at least one of the first sub-mold cavity plate 211 and the second sub-mold cavity plate 212 is provided with an ejector pin 217. The cooling medium is introduced into the second cooling pipe 214, which is conducive to accelerating the molding of the product. The driving plate 224 drives the ejector pin 217 to move up and down.

[0050] In summary, the design focus of the utility model is that its pin inserting module 30 is arranged on the cavity plate 210, and the pin 32 of the pin inserting module 30 can pass through the cavity 213. When the skeleton is molded for the first time, the pin 32 can pass through the cavity 213, and the skeleton is formed with an injection hole. When the soft glue is injected for the second time, the trigger component presses down the exit component 31 of the pin inserting module 30, so that the pin 32 can retreat from the cavity 213, so that the soft glue can better wrap the skeleton, and the combination of the soft glue and the skeleton is more firm and has a longer service life. The cavities of the cavity plate 210 can be used alternately, which also further improves production efficiency.

[0051] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An improved two-color mold, characterized in that: It comprises an upper mold and a lower mold; the upper mold comprises an upper mold plate and a core plate arranged on the upper mold plate; the core plate is provided with a first core and a second core; The lower mold comprises a lower mold base, a lower mold plate, and a cavity plate; the lower mold plate is arranged on the lower mold base; the cavity plate is arranged on the lower mold plate; the cavity plate has at least one cavity; the cavity plate is provided with a pin inserting mold group, and the pin of the pin inserting mold group can pass through the cavity; a trigger component is arranged at the second core position; the trigger component can press down the exit component of the pin inserting mold group, and the pin can retreat from the cavity; The first driving member is connected to the cavity plate and can lift the cavity plate; the output end of the first driving source is connected to the second driving member, and the second driving member drives the first driving member to rotate.

2. The improved two-color mold according to claim 1, characterized in that: The needle inserting module comprises a needle inserting plate, the withdrawal component and the needle inserting plate are arranged on the needle inserting plate, the needle inserting plate is movably arranged in the first mounting groove at the back of the cavity plate, and the head of the needle inserting plate has a recessed portion.

3. An improved two-color mold according to claim 2, characterized in that: The inserting pins are arranged in rows, the roots of the inserting pins are inserted into the inserting pin plate, the latch pins penetrate into the inserting pin plate, and the inserting pins are fixed to the inserting pin plate.

4. The improved two-color mold according to claim 1, characterized in that: The bottom of the first driving member is connected to a driving plate, and a first sensor is arranged on the motion track of the driving plate.

5. The improved two-color mold according to claim 1, characterized in that: The first driving member is provided with a gear; the second driving member is provided with a driving tooth, and the driving tooth is meshed with the gear.

6. The improved two-color mold according to claim 5, characterized in that: A mounting plate is arranged between the lower die base and the lower template, and a channel is formed between the lower template and the mounting plate; a sliding block is arranged on the inner wall of the channel, and a sliding groove is arranged on the second driving member, and the sliding groove and the sliding block can slide relative to each other.

7. The improved two-color mold according to claim 5, characterized in that: The second sensors are arranged at the end and the side of the motion track of the second driving member, and the sensing part on the second driving member can trigger the second sensors.

8. The improved two-color mold according to claim 1, characterized in that: The interior of the first driving member is a hollow structure, and a first cooling pipe is arranged inside the hollow structure and is connected to the cavity plate.

9. The improved two-color mold according to claim 1, characterized in that: The core plate comprises a first main core plate, and a first secondary core plate and a second secondary core plate arranged beside the first main core plate; the first core is arranged on the first main core plate and the first secondary core plate; The second core is arranged on the first main core plate and the second auxiliary core plate; The cavity plate includes a first main cavity plate, and a first sub-cavity plate and a second sub-cavity plate arranged on the side of the first main cavity plate; the cavity is arranged in the first main cavity plate, the first sub-cavity plate, and the second sub-cavity plate; the first main cavity plate can rise relative to the first sub-cavity plate and the second sub-cavity plate.

10. An improved two-color mold according to claim 9, characterized in that: The first sub-mold core plate, the second sub-mold core plate, the first sub-cavity plate and the second sub-cavity plate are all provided with a second cooling pipe; and at least one of the first sub-cavity plate and the second sub-cavity plate is provided with an ejector pin.

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