Silica gel double-color in-mold injection molding equipment capable of linking and bending multiple products

Abstract

The invention relates to the technical field of double-color in-mold injection molding equipment, and discloses silica gel double-color in-mold injection molding equipment capable of linking and bending a plurality of products, the silica gel double-color in-mold injection molding equipment comprises an upper injection molding mold and a lower injection molding mold, and the bottom of the lower injection molding mold is provided with a rotating table; a one-color injection molding head, a two-color injection molding head, a first matched cavity and a second matched cavity are arranged in the upper injection molding mold, the first matched cavity and the second matched cavity are in opposite states, two opposite molding modules are mounted at the top of the lower injection molding mold, and injection molding channels are formed in the tops of the two molding modules. The molded first workpiece and second workpiece integrated connection assembly endows a subsequent formed complete product with excellent bending performance, so that the product can well adapt to practical application scenes such as flexible bending of a head-mounted product according to a head shape and shape change of a foldable assembly fitting according to needs. And the high requirement of diversified use scenes on frequent bending of products is practically met.

Description

Technical Field

[0001] The present invention relates to the technical field of two-color in-mold injection molding equipment, and specifically relates to a silicone two-color in-mold injection molding equipment capable of linking and bending multiple products. Background Art

[0002] Two-color injection molding refers to a molding process in which two different materials are injected into the same set of molds, so that the molded parts are formed by two materials. Some of the two materials are of different colors, and some are of different hardnesses, so as to improve the aesthetics and assembly performance of the products, and thus it is widely used in high-efficiency molding processes in the fields of electronic products, medical devices, auto parts, etc.

[0003] However, with the increasing requirements of the market for the functionality and aesthetics of products, traditional single-color injection molding can no longer meet the needs. Two-color injection molding technology has gradually become the mainstream because it can achieve complex structures and diverse appearance effects. However, there are still many technical bottlenecks in the existing two-color injection molding technology when realizing the linking and bending of multiple products, such as insufficient linking strength and low bending accuracy. Therefore, aiming at the defects existing in the above-mentioned prior art, this application will provide a silicone two-color in-mold injection molding equipment capable of linking and bending multiple products to solve the problem. Summary of the Invention

[0004] (I) Technical Problems to be Solved Aiming at the deficiencies of the prior art, the present invention provides a silicone two-color in-mold injection molding equipment capable of linking and bending multiple products, and solves the problems raised in the above background art.

[0005] (II) Technical Solutions To achieve the above object, the present invention provides the following technical solutions: A silicone two-color in-mold injection molding equipment capable of linking and bending multiple products, including an upper injection mold and a lower injection mold. A rotating table is arranged at the bottom of the lower injection mold. Inside the upper injection mold, there are a first-color injection head, a second-color injection head, and a first matching cavity and a second matching cavity in a relative state. At the top of the lower injection mold, two opposite forming modules are installed. Injection channels are arranged at the tops of the two forming modules. During the rotation and adjustment of the two forming modules together with the lower injection mold and the rotating table, the injection channels at the tops of the two forming modules can be alternately aligned with the first-color injection head and the second-color injection head; A number of first forming grooves and second forming grooves are arranged on the surfaces of the two forming modules. The number of the first forming grooves and the second forming grooves are all communicated with the corresponding injection channels. After the two injection channels are alternately injected, the second workpieces formed inside the second forming grooves are integrally connected with the first workpieces formed inside the number of the first forming grooves respectively.

[0006] Preferably, there is a space between two adjacent first forming grooves, and the second forming groove is communicated with the first forming groove space and is away from the central axis of the corresponding forming module.

[0007] Preferably, a first discharge hole and a second discharge hole are respectively provided between the first molding groove and the corresponding injection channel, and between the second molding groove and the corresponding injection channel, and the second discharge hole is opened in the clearance space between two adjacent first molding grooves.

[0008] Preferably, a cold flow injection molding system in communication with the two-color injection molding head space and a hot flow injection molding system in communication with the single-color injection molding head are installed outside the top of the upper injection mold.

[0009] Preferably, a plurality of cooling tubes are provided inside the upper injection mold, and both ends of the cooling tubes extend outside the surface of the upper injection mold and can introduce the cooling solution into the upper injection mold in a circulating manner for cooling; the cooling solution includes water, saline solution, and mineral oil.

[0010] Preferably, a threaded hole is provided inside the rotating table, and a clearance hole aligned with the threaded hole is provided on the bottom structure of the lower injection mold, and the rotating table and the lower injection mold can be installed and fixed by means of screws fitted into the clearance hole and then screw-locked with the threaded hole; The number of the threaded holes is the same as the number of the clearance holes and is no less than two.

[0011] Preferably, the outer sides of the four corners of the lower injection mold are provided with isolation columns, and anti-interference spaces are provided between the bottoms of the four isolation columns and the rotating platform; The bottom surfaces of the four isolation columns and the surface of the rotating platform are both provided with hemispherical grooves. The hemispherical grooves on the surfaces of the four isolation columns are aligned one by one with the four hemispherical grooves on the surface of the rotating platform to form four point-to-point detection spaces.

[0012] Preferably, a positioning hole is opened in the corner of the upper injection mold, and a guide column that can be engaged with the positioning hole is fixed on the top of the corner of the lower injection mold. The guide column can be completely engaged with the inside of the positioning hole after the upper injection mold and the lower injection mold are closed.

[0013] Preferably, the number of the positioning holes is the same as the number of the guide pillars and is no less than two, and the top corners of the guide pillars are configured as rounded structures.

[0014] Preferably, the method for operating the silicone two-color in-mold injection molding device capable of bending multiple product links comprises the following steps: S1. Use the existing lifting equipment to drive the upper injection mold and close the upper injection mold with the lower injection mold for the first time; S2. After the upper injection mold and the lower injection mold are closed, the injection channels at the tops of the two molding modules will be aligned and communicated with a single-color injection head and a two-color injection head respectively, and the two molding modules and the first matching cavity and the second matching cavity inside the upper injection mold will be sleeved in sequence; S3. Inject the single-color material in a hot-melt state into the single-color injection head through the hot runner injection system, and then guide the single-color material in a hot-melt state to the injection channel in the first matching cavity through the single-color injection head. Then, under the diversion and delivery of the injection channel and the second discharge holes respectively communicated with the injection channel in several first molding grooves, the single-color material in a hot-melt state is molded into a single first workpiece in several first molding grooves, and the first matching cavity provides space limitation during the molding process; S4. After the first workpiece in each of the several first molding grooves is cooled, use the existing lifting equipment to drive the upper injection mold and open the upper injection mold and the lower injection mold for the first time. After the upper injection mold and the lower injection mold are completely separated, use the existing rotary power output equipment to drive the rotary table, and then the rotary table drives the lower injection mold, the two molding modules and the related structures of the two molding modules to perform a 180-degree rotation adjustment; S5. After the rotation of the second discharge hole is completed, use the existing lifting equipment to drive the upper injection mold and close the upper injection mold and the lower injection mold for the second time. Similarly, after the upper injection mold and the lower injection mold are closed, the injection channels at the tops of the two molding modules will be aligned and communicated with a single-color injection head and a two-color injection head respectively, but the molding module with several first workpieces formed on its surface will be sleeved with the second matching cavity, and the molding module idle in the first opening and closing mold cycle will be sleeved with the first matching cavity; S6. For the two molding modules after the second closing, synchronous injection operations will be carried out. Among them, for the molding module with several first workpieces formed on its surface, the cold-flow processed two-color material is guided into the two-color injection head through the cold-flow injection system, and then through the two-color injection head, the corresponding injection channel and the second discharge holes communicated with the injection channel in the second molding groove for further diversion and expansion and under the space constraint of the second matching cavity, a second workpiece integrally connected to several first workpieces will be formed in the second molding groove; At the same time, inject the single-color material in a hot-melt state into the single-color injection head through the hot runner injection system, and then guide the single-color material in a hot-melt state to the injection channel in the first matching cavity through the single-color injection head. Then, under the diversion and delivery of the injection channel and the second discharge holes respectively communicated with the injection channel in several first molding grooves, the single-color material in a hot-melt state is molded into a single first workpiece in several first molding grooves, and the first matching cavity provides space limitation during the molding process; S7. After the second workpiece and several new first workpieces are cooled and formed, use the existing lifting equipment to drive the upper injection mold and make the upper injection mold and the lower injection mold perform a second mold opening. After the upper injection mold and the lower injection mold are completely separated, take out the assembly formed by the integration of the second workpiece and several first workpieces. For the idle forming modules, use the existing rotary power output equipment to drive the rotary table, and then make the rotary table drive the lower injection mold, two forming modules and the related structures of the two forming modules to perform a 180-degree rotation adjustment. Use the existing lifting equipment to drive the upper injection mold and make the upper injection mold and the lower injection mold perform a second mold closing. Similarly, after the upper injection mold and the lower injection mold are closed, the injection channels at the tops of the two forming modules will be aligned and communicated with a single-color injection head and a two-color injection head respectively. However, the forming module with several first workpieces formed on its surface will be sleeved with the second matching cavity, and the idle forming module will be sleeved with the first matching cavity. Thus, repeat the operation according to the steps in S4 to S5 above.

[0015] (III) Beneficial effects The present invention provides a silicone two-color in-mold injection equipment capable of bending and linking multiple products, having the following beneficial effects: 1. In the specific use process of the silicone two-color in-mold injection equipment capable of bending and linking multiple products, it can improve the connection firmness between multiple plastic sheets with the silicone injection connection technology disclosed by itself. The plastic sheets are wrapped and connected by silicone, forming a tight and stable bonding state at the interface between the silicone and the plastic material. Since silicone can be added with a specific platinum bonding agent to keep the plastic parts tightly connected, there is no phenomenon of silicone shedding or sheet separation. Compared with the traditional method of using TPU or other common connection materials, the connection firmness of the present invention is increased by several times, which effectively ensures that during the long-term use of the product, even if it faces frequent bending, stretching and various external forces, its overall structure is still stable and reliable, greatly reducing the risk of product damage caused by the failure of the connection part.

[0016] 2. The integrated connection assembly of the first workpiece and the second workpiece formed by the silicone two-color in-mold injection equipment capable of bending and linking multiple products endows the subsequent complete product with excellent bendability, enabling it to well adapt to practical application scenarios such as head-mounted products, flexibly bending according to the head shape, and folding and assembling accessories to change the shape as needed. It effectively meets the high requirements for frequent bending of products in diverse use scenarios. The overall product exhibits good toughness, thanks to the elasticity of the silicone material itself and the stable structure formed in cooperation with the plastic sheet. [[ID=1�]]

[0017] 3. The silicone two-color in-mold injection molding equipment capable of bending the links of multiple products produces an integrated connection assembly of the first workpiece and the second workpiece, which organically combines firm connection and good bendability, providing a broader design space for product designers. In the past, due to limitations in connection materials and methods, it was difficult to realize some products with complex shapes, frequent bending requirements, and high structural stability requirements. Now, with the help of the technology of the present invention, more novel and unique products can be designed.

[0018] 4. The silicone two-color in-mold injection molding equipment capable of bending the links of multiple products. In terms of specific production, the two-color molding process adopted by the present invention is relatively simple and easy to operate. Through reasonable setting of process parameters and mold structure in the whole injection molding process, efficient and stable production can be achieved. Compared with the previous method of using complex connection processes to realize the connection of sheet bodies, the present invention reduces the production process, shortens the production cycle, and improves the production efficiency. At the same time, since the yield rate of the product is improved due to the enhanced connection firmness and overall performance, the waste of raw materials and rework costs caused by product quality problems are reduced, effectively controlling the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional schematic diagram of the structure of the present invention; Figure 2 is a three-dimensional schematic diagram of the molding module of the structure of the present invention; Figure 3 is an enlarged schematic diagram of the molding module of the structure of the present invention; Figure 4 is a top view schematic diagram of the injection molding channel of the structure of the present invention; Figure 5 is a bottom view schematic diagram of the first-color injection molding head of the structure of the present invention; Figure 6 is a top view schematic diagram of the second-color injection molding head of the structure of the present invention; Figure 7 is a three-dimensional schematic diagram of the first workpiece of the structure of the present invention; Figure 8 is a three-dimensional schematic diagram of the second workpiece of the structure of the present invention; Figure 9 is an integrated connection schematic diagram of the second workpiece of the structure of the present invention; Figure 10 is the structure of the present invention Figure 1 is an enlarged schematic diagram of part A of the structure.

[0020] In the figure: 1. Upper injection mold; 2. Lower injection mold; 3. Molding module; 4. Injection channel; 5. First molding groove; 6. Second molding groove; 7. Single-color injection head; 8. Two-color injection head; 9. First workpiece; 10. Second workpiece; 11. First discharge hole; 12. Second discharge hole; 13. Cold flow injection molding system; 14. Rotary table; 15. Hot flow injection molding system; 16. Isolation column; 17. Cooling pipe; 18. Guide column; 19. Hemispherical groove. DETAILED DESCRIPTION

[0021] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0022] See also Figures 1 - 4 、 Figures 7 - 9 A silicone two-color in-mold injection molding device that can bend multiple product links includes an upper injection mold 1 and a lower injection mold 2. A rotating table 14 is provided at the bottom of the lower injection mold 2. A single-color injection head 7, a two-color injection head 8, and a first supporting cavity and a second supporting cavity in a relative state are provided inside the upper injection mold 1. Two opposing molding modules 3 are installed on the top of the lower injection mold 2. The tops of the two molding modules 3 are both provided with injection channels 4. During the rotation and adjustment process of the two molding modules 3 along with the lower injection mold 2 and the rotating table 14, the injection channels 4 on the tops of the two molding modules 3 can be alternately aligned with the single-color injection head 7 and the two-color injection head 8. The surfaces of the two molding modules 3 are provided with a plurality of first molding grooves 5 and second molding grooves 6. The plurality of first molding grooves 5 and second molding grooves 6 are communicated with the corresponding injection channels 4. After the two injection channels 4 are alternately injected, the second workpiece 10 formed inside the second molding groove 6 and the first workpiece 9 formed inside the plurality of first molding grooves 5 are integrally connected. There is a makeshift space between two adjacent first molding grooves 5, the second molding groove 6 is spatially connected to the first molding groove 5 and is away from the central axis of the corresponding molding module 3, and a first discharge hole 11 and a second discharge hole 12 are respectively provided between the first molding groove 5 and the corresponding injection channel 4, and between the second molding groove 6 and the corresponding injection channel 4. The second discharge hole 12 is opened in the makeshift space between the two adjacent first molding grooves 5. A cold flow injection molding system 13 spatially connected to the two-color injection head 8 and a hot flow injection molding system 15 spatially connected to the single-color injection head 7 are installed on the top of the upper injection mold 1.

[0023] When in use, the hot flow injection molding system 15 cooperates with the two-color injection molding head 8 to provide hot flow injection molding conditions for the first color raw material, and the cold flow injection molding system 13 cooperates with the one-color injection molding head 7 to provide cold flow injection molding conditions for the second color raw material, wherein the first color raw material is PC material and the secondary raw material is silicone; After the provided rotary table 14 is combined with the existing rotary transmission equipment, the lower injection mold 2 and the two molding modules 3 on the lower injection mold 2 can be alternately aligned with the single-color injection head 7 and the two-color injection head 8, and then hot-flow injection molding and cold-flow injection molding can be carried out respectively. Moreover, outside the initial injection molding cycle, the subsequent hot-flow injection molding and cold-flow injection molding corresponding to the two molding modules 3 can be synchronized and cycled.

[0024] Please refer to Figures 1 - 4 、 Figures 7 - 9 Inside the upper injection mold 1, a number of cooling pipes 17 are provided, and both ends of the number of cooling pipes 17 extend outside the surface of the upper injection mold 1 and can introduce the cooling solution into the upper injection mold 1 in a circulating delivery manner for cooling; the cooling solution includes water, saline solution, and mineral oil. Among them, water is the most commonly used cooling medium in mold production, with the advantages of low cost, easy availability, safe use, and cleanliness; adding 10%-15% of salt to water to form a saline solution can significantly improve the cooling capacity; mineral oil has a slower cooling rate at low temperatures, which helps to reduce the deformation and cracking of workpieces.

[0025] During use, considering the time cost of cooling and forming the first workpiece 9 and the second workpiece 10, the cooling solution can be introduced from one end of the number of cooling pipes 17 and then discharged from the other end corresponding to each of the number of cooling pipes 17, and thus reciprocated to assist in cooling the first workpiece 9 and the second workpiece 10 during the forming and cooling process, and accelerate the forming speed of the first workpiece 9 and the second workpiece 10.

[0026] Please refer to Figure 1 、 Figure 10 Inside the rotary table 14, threaded holes are provided, and the bottom structure of the lower injection mold 2 is provided with a relief hole aligned with the threaded holes, and the rotary table 14 and the lower injection mold 2 can be installed and fixed by means of screwing the screw through the relief hole and then helically locking it with the threaded hole. The number of threaded holes provided is the same as the number of relief holes provided and is not less than two.

[0027] On the outer sides of the four corners of the lower injection mold 2, isolation columns 16 are provided, and there is an anti-interference space between the bottoms of the four isolation columns 16 and the rotary table 14. Hemispherical grooves 19 are provided on the bottom surfaces of the four spacer posts 16 and on the surface of the rotating table 14. The hemispherical grooves 19 on the surfaces of the four spacer posts 16 are aligned one by one with the four hemispherical grooves 19 on the surface of the rotating table 14 to form four point-to-point detection spaces. Positioning holes are provided inside the corners of the upper injection mold 1, and guide posts 18 that can be snap-fitted into the positioning holes are fixed to the tops of the corners of the lower injection mold 2. After the upper injection mold 1 and the lower injection mold 2 are closed, the guide posts 18 can be completely snap-fitted inside the positioning holes. The number of the positioning holes is the same as the number of the guide posts 18 and is not less than two, and the top corners of the guide posts 18 are provided with rounded corner structures.

[0028] During use, considering the problem of increased transmission error caused by structural wear during the long-term flipping adjustment of the rotating table 14, the mechanical forced constraint of the transmission accuracy of the rotating table 14 is achieved by snap-fitting a plurality of provided guide posts 18 with the corresponding number of positioning holes one by one, thereby reducing the speed of increase in the transmission error of the rotating table 14. To ensure that the operator has convenient conditions to understand the transmission error situation of the rotating table 14 in real time, the hemispherical grooves 19 provided on the four spacer posts 16 are aligned pairwise with the four hemispherical grooves 19 provided on the rotating table 14. Subsequently, after the rotating table 14 and related structures are used for a period of time, the distance between two opposite hemispherical grooves 19 is measured using the two opposite tip structures inside the vernier caliper, and four groups of distance values are obtained. After taking the average value and comparing it with the set error range, if it is within the error, it indicates that the transmission error of the rotating table 14 is acceptable; otherwise, if it is within the error, it indicates that the transmission error of the rotating table 14 is already large and needs to be repaired in time.

[0029] Please refer to Figure 1 、 Figure 10 The operation method of the silicone two-color injection molding device that can bend multiple product links includes the following operation steps: S1. Use the existing lifting equipment to drive the upper injection mold 1 and make the upper injection mold 1 and the lower injection mold 2 perform the first mold closing. The existing lifting equipment includes a hydraulic rod and a lead screw lifting mechanism. S2. After the upper injection mold 1 and the lower injection mold 2 are closed, the injection channels 4 at the tops of the two molding modules 3 will be respectively aligned and communicated with the first-color injection head 7 and the second-color injection head 8, and the two molding modules 3 and the first matching cavity and the second matching cavity inside the upper injection mold 1 are sequentially sleeved. S3. Inject the single-color material in a hot-melt state into the interior of the single-color injection head 7 through the hot-flow injection system 15. The single-color material is a PC material. Then, convey the single-color material in a hot-melt state to the injection channel 4 in the first matching cavity through the single-color injection head 7. Subsequently, under the diversion and conveyance of the injection channel 4 and the second discharge holes 12 respectively communicating with the injection channel 4 in several first forming grooves 5, the single-color material in a hot-melt state forms a single first workpiece 9 in several first forming grooves 5, and the first matching cavity provides spatial constraints during the forming process; S4. After the first workpiece 9 in each of the several first forming grooves 5 is cooled, use the existing lifting equipment to drive the upper injection mold 1 and make the upper injection mold 1 and the lower injection mold 2 perform the first mold opening. After the upper injection mold 1 and the lower injection mold 2 are completely separated, use the existing rotary power output equipment to drive the rotary table 14. Then, the rotary table 14 drives the lower injection mold 2 and the relevant structures of the two forming modules 3 and the two forming modules 3 to perform a 180-degree rotation adjustment. The rotary power output equipment includes a power equipment composed of a reducer, an encoder, and a servo motor; S5. After the rotation of the second discharge hole 12 is completed, use the existing lifting equipment to drive the upper injection mold 1 and make the upper injection mold 1 and the lower injection mold 2 perform the second mold closing. Similarly, after the upper injection mold 1 and the lower injection mold 2 are closed, the injection channels 4 at the tops of the two forming modules 3 will be respectively aligned and communicated with the single-color injection head 7 and the two-color injection head 8. However, the forming module 3 with several first workpieces 9 formed on its surface will be sleeved with the second matching cavity, and the forming module 3 idle during the first mold opening and closing cycle will be sleeved with the first matching cavity; S6. For the two forming modules 3 after the second mold closing, synchronous injection operations will be carried out. Among them, for the forming module 3 with several first workpieces 9 formed on its surface, the cold-flow processed two-color material will be conveyed into the two-color injection head 8 through the cold-flow injection system 13. Then, through the two-color injection head 8, the corresponding injection channel 4, and the second discharge holes 12 communicating with the injection channel 4 in the second forming grooves 6 for further diversion and expansion and under the spatial constraint of the second matching cavity, a second workpiece 10 integrally connected to several first workpieces 9 will be formed in the second forming grooves 6; Meanwhile, inject the single-color material in a hot-melt state into the interior of the single-color injection head 7 through the hot-flow injection system 15. Then, convey the single-color material in a hot-melt state to the injection channel 4 in the first matching cavity through the single-color injection head 7. Subsequently, under the diversion and conveyance of the injection channel 4 and the second discharge holes 12 respectively communicating with the injection channel 4 in several first forming grooves 5, the single-color material in a hot-melt state forms a single first workpiece 9 in several first forming grooves 5, and the first matching cavity provides spatial constraints during the forming process; S7. After the second workpiece 10 and several new first workpieces 9 are cooled and formed, use the existing lifting equipment to drive the upper injection mold 1 and perform the second mold opening of the upper injection mold 1 and the lower injection mold 2. After the upper injection mold 1 and the lower injection mold 2 are completely separated, take out the assembly formed by the integration of the second workpiece 10 and several first workpieces 9. For the idle forming module 3, use the existing rotary power output equipment to drive the rotary table 14, and then make the rotary table 14 drive the lower injection mold 2, the two forming modules 3 and the related structures of the two forming modules 3 to perform a 180-degree rotation adjustment. Use the existing lifting equipment to drive the upper injection mold 1 and perform the second mold closing of the upper injection mold 1 and the lower injection mold 2. Similarly, after the upper injection mold 1 and the lower injection mold 2 are closed, the injection channels 4 at the tops of the two forming modules 3 will be aligned and communicated with the single-color injection head 7 and the two-color injection head 8 respectively. However, the forming module 3 with several first workpieces 9 formed on its surface will be sleeved with the second matching cavity, and the idle forming module 3 will be sleeved with the first matching cavity. Then, repeat the operations according to the steps in S4 to S5 above.

[0030] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0031] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A silicone two-color in-mold injection molding device capable of linking and bending multiple products, comprising an upper injection mold (1) and a lower injection mold (2), wherein a rotating table (14) is provided at the bottom of the lower injection mold (2), wherein a single-color injection head (7), a two-color injection head (8) and a first matching cavity and a second matching cavity in a relative state are provided inside the upper injection mold (1), and two opposing molding modules (3) are installed on the top of the lower injection mold (2), wherein the tops of the two molding modules (3) are both provided with an injection channel (4), and during the process of the two molding modules (3) rotating and adjusting together with the lower injection mold (2) and the rotating table (14), the injection channels (4) on the tops of the two molding modules (3) can be alternately aligned with the single-color injection head (7) and the two-color injection head (8); The surfaces of the two molding modules (3) are both provided with a plurality of first molding grooves (5) and second molding grooves (6). After the plurality of first molding grooves (5) and the second molding grooves (6) are alternately molded in the two injection molding channels (4), the second workpieces (10) molded inside the second molding grooves (6) are integrally connected with the first workpieces (9) molded inside the plurality of first molding grooves (5).

2. The silicone two-color in-mold injection molding equipment capable of bending the links of multiple products according to claim 1, wherein: There is a clearance space between two adjacent first forming grooves (5), and the second forming groove (6) is spatially connected to the first forming groove (5) and is away from the central axis of the corresponding forming module (3).

3. The silicone two-color in-mold injection molding equipment capable of bending the links of multiple products according to claim 1, characterized in that: A first discharge hole (11) and a second discharge hole (12) are respectively provided between the first molding groove (5) and the corresponding injection channel (4), and between the second molding groove (6) and the corresponding injection channel (4). The second discharge hole (12) is provided in the clearance space between two adjacent first molding grooves (5).

4. A silicone two-color in-mold injection device capable of bending and linking multiple products according to claim 3, characterized in that: A cold flow injection molding system (13) in spatial communication with the two-color injection molding head (8) and a hot flow injection molding system (15) in spatial communication with the one-color injection molding head (7) are installed on the top of the upper injection mold (1).

5. A silicone two-color in-mold injection molding device capable of bending and linking multiple products according to claim 1, characterized in that: A plurality of cooling tubes (17) are provided inside the upper injection mold (1), and both ends of the plurality of cooling tubes (17) extend outside the surface of the upper injection mold (1) and can introduce a cooling solution into the upper injection mold (1) in a circulating manner for cooling; the cooling solution includes water, saline solution, and mineral oil.

6. A silicone two-color in-mold injection device capable of bending the links of multiple products according to claim 1, characterized in that: The rotating table (14) is provided with a threaded hole inside, and the bottom structure of the lower injection mold (2) is provided with a clearance hole aligned with the threaded hole, and the rotating table (14) and the lower injection mold (2) can be installed and fixed by means of screws fitting into the clearance hole and then screw-locking with the threaded hole; The number of the threaded holes is the same as the number of the clearance holes and is no less than two.

7. An in-mold injection device for silicone two-color molding capable of bending and linking multiple products according to claim 1, characterized in that: Isolation columns (16) are provided on the outside of the four corners of the lower injection mold (2), and anti-interference spaces are provided between the bottoms of the four isolation columns (16) and the rotating platform (14); Hemispherical grooves (19) are provided on the bottom surfaces of the four isolation posts (16) and the surface of the rotating table (14). The hemispherical grooves (19) on the surfaces of the four isolation posts (16) are aligned with the four hemispherical grooves (19) on the surface of the rotating table (14) one by one to form four point-to-point detection spaces.

8. A silicone two-color in-mold injection molding device capable of bending and linking multiple products according to claim 1, characterized in that: Positioning holes are provided inside the corners of the upper injection mold (1). Guide posts (18) that can be snap-fitted into the positioning holes are fixed to the tops of the corners of the lower injection mold (2). After the upper injection mold (1) and the lower injection mold (2) are closed, the guide posts (18) can be completely snap-fitted inside the positioning holes.

9. The silicone two-color in-mold injection device capable of bending the links of multiple products according to claim 8, characterized in that: The number of the positioning holes is the same as the number of the guide posts (18), and both are not less than two. The top corners of the guide posts (18) are provided with rounded corner structures.

10. A method for silicone two-color in-mold injection molding capable of bending the links of multiple products, using a silicone two-color in-mold injection molding device capable of bending the links of multiple products as described in claim 4, characterized in that, It includes the following operating steps: S1. Use the existing lifting equipment to drive the upper injection mold (1) and make the upper injection mold (1) and the lower injection mold (2) perform the first mold closing. S2. After the upper injection mold (1) and the lower injection mold (2) are closed, the injection channels (4) at the tops of the two molding modules (3) will be aligned and communicated with a first-color injection head (7) and a second-color injection head (8) respectively. And the two molding modules (3) are sequentially sleeved with the first matching cavity and the second matching cavity inside the upper injection mold (1). S3. Inject the first-color material in a molten state into the first-color injection head (7) through the hot runner injection system (15). Then, guide the first-color material in a molten state to the injection channel (4) in the first matching cavity through the first-color injection head (7). Subsequently, under the diversion and conveyance of the injection channel (4) and the second discharge holes (12) respectively communicating with the injection channel (4) in a number of first molding grooves (5), the first-color material in a molten state is molded into a single first workpiece (9) in the number of first molding grooves (5), and the first matching cavity provides space limitation during the molding process. S4. After the first workpieces (9) in the respective first molding grooves (5) are cooled, use the existing lifting equipment to drive the upper injection mold (1) and make the upper injection mold (1) and the lower injection mold (2) perform the first mold opening. After the upper injection mold (1) and the lower injection mold (2) are completely separated, use the existing rotary power output equipment to drive the rotating table (14). Then, the rotating table (14) drives the lower injection mold (2), the two molding modules (3), and the related structures of the two molding modules (3) to perform a 180-degree rotation adjustment. S5. After the rotation of the second discharge holes (12) is completed, use the existing lifting equipment to drive the upper injection mold (1) and make the upper injection mold (1) and the lower injection mold (2) perform the second mold closing. Similarly, after the upper injection mold (1) and the lower injection mold (2) are closed, the injection channels (4) at the tops of the two molding modules (3) will be aligned and communicated with the first-color injection head (7) and the second-color injection head (8) respectively. However, the molding module (3) with a number of first workpieces (9) formed on its surface will be sleeved with the second matching cavity, and the molding module (3) idle during the first mold opening and closing cycle will be sleeved with the first matching cavity. S6. For the two molding modules (3) after the second mold closing, a synchronous injection molding operation will be performed, wherein for the molding module (3) with a plurality of first workpieces (9) molded on the surface, the cold-flow treated two-color material is guided to the two-color injection molding head (8) through the cold-flow injection molding system (13), and then further guided and expanded through the two-color injection molding head (8), the corresponding injection molding channel (4), and the second discharge hole (12) of the second molding groove (6) communicating with the injection molding channel (4) and the space constraint of the second matching cavity, the second workpiece (10) integrally connected with the plurality of first workpieces (9) is molded in the second molding groove (6); At the same time, the single-color material in a hot-melt state is injected into the interior of the single-color injection head (7) through the hot-flow injection molding system (15), and then the single-color material in a hot-melt state is guided to the injection channel (4) in the first matching cavity through the single-color injection molding head (7), and then the single-color material in a hot-melt state is molded into a single first workpiece (9) in the plurality of first molding grooves (5) under the diversion and guidance of the injection channel (4) and the second discharge holes (12) of the plurality of first molding grooves (5) that are respectively connected to the injection channel (4), and the first matching cavity provides space restriction during the molding process; S7, after the second workpiece (10) and the new plurality of first workpieces (9) are cooled and formed, the upper injection mold (1) is driven by the existing lifting equipment and the upper injection mold (1) and the lower injection mold (2) are opened for the second time, and after the upper injection mold (1) and the lower injection mold (2) are completely separated, the second workpiece (10) and the plurality of first workpieces (9) are taken out as a single-piece assembly; As for the idle molding modules (3), the existing rotary power output device is used to drive the rotary table (14), and then the rotary table (14) drives the lower injection mold (2) and the two molding modules (3) and the related structures of the two molding modules (3) to perform a 180-degree rotation adjustment, and the existing lifting device is used to drive the upper injection mold (1) and make the upper injection mold (1) and the lower injection mold (2) perform a second mold closing. Similarly, after the upper injection mold (1) and the lower injection mold (2) are completed, the injection channels (4) on the top of the two molding modules (3) will be aligned with the single-color injection head (7) and the two-color injection head (8) respectively and communicate with each other, but the molding module (3) with a plurality of first workpieces (9) formed on the surface will be set with the second matching cavity, and the idle molding module (3) will be set with the first matching cavity, thereby repeating the above steps S4 to S5.

Images