Different material double-color precision injection molding mold

Abstract

The utility model discloses a different material double-color precision injection molding mold which comprises an upper mold base and a lower mold base used for being fixed to an injection molding machine, a cavity is formed between the upper mold base and the lower mold base, and a demolding mechanism is further arranged between the upper mold base and the cavity. A first injection molding device and a second injection molding device which are used for injecting two different materials are arranged on the two sides of the cavity, the cavity comprises a detachable mold core and a fixing structure used for installing the mold core, and locking structures are arranged at the positions, corresponding to the first injection molding device and the second injection molding device, of the two sides of the mold core. The locking structure is connected with the first injection molding device and the second injection molding device respectively, a plurality of injection molding grooves are formed in the mold core, and adhesion assisting mechanisms for assisting injection molding of two different materials are arranged on the outer sides of the injection molding grooves. According to the structure and the actual use condition, the precision reaches + / -0.01 mm, the forming period does not exceed 60 seconds, the efficiency is higher, the service life is long, the precision is high, no leakage phenomenon exists, and installation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a heterogeneous material two-color precision injection molding mold. Background Art

[0002] Two-color injection molding, also known as dual-material injection molding, refers to the process of injecting two different materials (soft, hard or color) into the same mold, so that the parts produced by injection molding are formed by two materials. In the existing two-color injection molding application, one material is usually used to inject into a semi-finished product in a mold, and then the semi-finished product is taken out for cooling, and then moved to another mold for secondary injection molding with another material to finally obtain the finished product.

[0003] However, this type of injection molding operation process is cumbersome, time-consuming, and has low production efficiency. In addition, injection molding after cooling will cause a large error between the injection molded product and the actual requirements, resulting in a mismatch, which makes the cost too high and affects actual use. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art solutions, the utility model provides a two-color precision injection molding mold of different materials, which can effectively solve the problems raised by the background technology.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A heterogeneous material two-color precision injection molding mold, comprising an upper mold base and a lower mold base for fixing on an injection molding machine, a mold cavity is provided between the upper mold base and the lower mold base, a demoulding mechanism is further provided between the upper mold base and the mold cavity, a first injector and a second injector for injecting two different materials are provided on both sides of the mold cavity, the mold cavity comprises a detachable mold core and a fixing structure for installing the mold core, locking structures are provided on both sides of the mold core for the positions of the first injector and the second injector, the locking structures are respectively connected to the first injector and the second injector, wherein a plurality of injection molding grooves are provided on the mold core, and an adhesion-promoting mechanism for assisting injection molding of two different materials is provided on the outer side of the injection molding groove;

[0007] The upper mold base is also provided with a monitoring module and a control module, wherein the monitoring module is connected to the control module, and the control module is controlled and connected to an adhesion-promoting mechanism, wherein the adhesion-promoting mechanism includes a medicine dispenser and two independently arranged die presses, and the medicine dispenser is embedded in the upper mold base, wherein the positions of the die presses corresponding to the cavities are respectively arranged in the upper mold base and the lower mold base.

[0008] As a further description of the above technical solution, the demoulding mechanism includes a push rod and a plurality of guide blocks connected to the push rod, the push rod is vertically arranged on the cavity, and the guide blocks are symmetrically arranged on both sides of the upper mold base.

[0009] As a further description of the above technical solution, the first injector and the second injector are symmetrically arranged on both sides of the lower mold base, the first injector is used for injecting silicone material, and the second injector is used for injecting glass material. The first injector and the second injector are both provided with an injection port and a plurality of limit rings, and the diameter of the limit ring decreases successively along the axial direction of the injection port.

[0010] As a further description of the above technical solution, the injection molding grooves are symmetrically arranged on the mold core, the fixed structure is arranged around the mold core, and the fixed structure includes a fixed frame, wherein injection molding channels are arranged between the injection molding grooves, and the injection molding channels are respectively connected to the first injector and the second injector.

[0011] As a further description of the above technical solution, the lower die base is also provided with a plurality of guide rods connected to the upper die base, and the upper die base moves along the direction of the lower die base through the guide rods.

[0012] As a further description of the above technical solution, the adhesion-promoting mechanism also includes a conveying pipe for connecting the medicine dispenser and a nozzle connected to the conveying pipe, and a control valve is provided on the conveying pipe, wherein the conveying pipe connected to the nozzle is inserted into the injection molding groove.

[0013] As a further description of the above technical solution, a plurality of condensing gas nozzles are provided on the outer edge of the injection molding groove, and the condensing gas nozzles are connected to the control module.

[0014] As a further description of the above technical solution, the monitoring module includes a temperature sensor, the temperature sensor is control-connected to the control module, and the control module also includes a signal transceiver module.

[0015] As a further description of the above technical solution, the locking structure includes a fixing hoop, and the fixing hoop is wedge-shaped.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model provides a heterogeneous material two-color precision injection molding mold, which has at least one of the following beneficial effects during use:

[0018] The mold structure is optimized from the traditional two-color mold design and manufacturing process improvement. Factors such as the difference in fluidity of the two materials in the mold, the difference in thermal expansion coefficients, and the stress distribution during the molding process are taken into account to ensure the quality and precision of the materials during the molding process. Temperature is a key parameter in the precision molding of glass and silicone two-color molds. One of the technical innovations is to achieve simultaneous molding of glass and silicone through precise temperature control and molding parameters, and to ensure the quality and dimensional stability of the two materials. In order to ensure the stability and controllability of the precision molding of glass and silicone two-color molds, one of the technical innovations is the introduction of advanced molding process monitoring and control systems. Through real-time monitoring and feedback control, the molding parameters can be adjusted in time to achieve higher molding accuracy and consistency. This embodiment uses non-contact measurement technology to monitor key parameters such as temperature, shape and size during the molding process. From the perspective of structure and actual use, its accuracy reaches ±0.01mm, the molding cycle does not exceed 60 seconds, the efficiency is faster, its service life is not less than 100,000 times, the surface finish of the molded product reaches Ra0.2p, the dimensional deviation of the molded product does not exceed 0.02mm, the molded product has excellent sealing performance, no leakage, easy installation, and a high pass rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a first overall structural schematic diagram of a heterogeneous material two-color precision injection molding mold of the utility model;

[0020] Figure 2 This is a second overall structural schematic diagram of a heterogeneous material two-color precision injection molding mold of the utility model;

[0021] Figure 3 It is a schematic diagram of the first overall side structure of a two-color precision injection molding mold of different materials according to the utility model;

[0022] Figure 4 This is a second overall side structural schematic diagram of a heterogeneous material two-color precision injection molding mold of the utility model;

[0023] Figure 5 This is a schematic diagram of the top view of a two-color precision injection molding mold of different materials according to the utility model;

[0024] Figure 6 It is a partial perspective structural schematic diagram of a heterogeneous material two-color precision injection molding mold of the utility model.

[0025] Numbers in the figure:

[0026] 1. Upper mold base; 101. Drug dispenser; 102. Delivery pipe; 103. Mold press; 104. Control valve; 105. Nozzle; 2. Demolding mechanism; 201. Guide block; 202. Ejector; 3. Mold core; 301. Injection molding groove; 302. Injection molding runner; 4. Monitoring module; 401. Temperature sensor; 5. Fixed structure; 501. Condensation gas nozzle; 502. Fixed frame; 6. Locking structure; 601. Fixed hoop; 7. Lower mold base; 701. First injector; 702. Second injector; 703. Guide rod; 704. Injection port; 705. Limit ring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figure 1-6 As shown, the utility model provides a two-color precision injection molding mold for different materials, including an upper mold base 1 and a lower mold base 7 for fixing on an injection molding machine, a cavity is provided between the upper mold base 1 and the lower mold base 7, a demolding mechanism 2 is also provided between the upper mold base 1 and the cavity, a first injector 701 and a second injector 702 for injecting two different materials are provided on both sides of the cavity, the cavity includes a detachable mold core 3 and a fixing structure 5 for installing the mold core 3, locking structures 6 are provided on both sides of the mold core 3 for the positions of the first injector 701 and the second injector 702, the locking structures 6 are respectively connected to the first injector 701 and the second injector 702, wherein a plurality of injection molding grooves 301 are provided on the mold core 3, and an adhesion-aiding mechanism for assisting the injection molding of two different materials is provided on the outer side of the injection molding groove 301.

[0029] Since glass and silicone are two materials of different natures, and since glass and silicone have different chemical and physical properties, it is difficult to combine them. Therefore, one of the technical innovations is to achieve a stronger adhesion between glass and silicone by surface treatment or introducing an intermediate layer. This can be done by physical and chemical methods to enhance the interfacial adhesion to ensure that no separation or peeling occurs during the molding process. In this example, by arranging a medicine dispenser 101 and a die press 103 in the mold, the medicine that can be fully bonded and molded with glass and silicone can be placed in the medicine dispenser 101, and the medicine dispenser 101 is placed in the injection molding groove 301 in the mold core 3 by a control valve 104 and a nozzle 105. The die press 103 uses pneumatics to squeeze the structure toward the center to further provide the tightness of injection molding.

[0030] The above method needs to follow up with the temperature sensor 401 to monitor the appropriate temperature. First, the glass material is injected from the second injector 702, and the glass material flows into the injection mold groove 301 through the flow channel. After the temperature reaches a suitable range, the silicone material is injected through the first injector 701. In this process, in order to achieve the purpose of injection molding of two different materials, glass and silicone, the medicine dispenser 101 and the mold press 103 are physically and chemically combined, which greatly improves the tightness of the injection structure.

[0031] The upper mold base 1 is also provided with a monitoring module 4 and a control module, wherein the monitoring module 4 is connected to the control module, and the control module is controlled and connected to an adhesion-promoting mechanism, wherein the adhesion-promoting mechanism includes a medicine dispenser 101 and two independently arranged die presses 103, wherein the medicine dispenser 101 is embedded in the upper mold base 1, wherein the positions of the cavities corresponding to the die presses 103 are respectively arranged in the upper mold base 1 and the lower mold base 7.

[0032] In order to achieve two-color molding in this embodiment, a two-color mold suitable for glass and silicone is designed and manufactured. The mold structure is optimized and the manufacturing process is improved from the traditional two-color mold. Factors such as the difference in fluidity of the two materials in the mold, the difference in thermal expansion coefficients, and the stress distribution during the molding process are taken into account to ensure the quality and precision of the materials during the molding process. In the precision molding process of the two-color mold of glass and silicone, temperature is a key parameter. One of the technical innovations is to achieve simultaneous molding of glass and silicone through precise temperature control and molding parameters, and to ensure the quality and dimensional stability of the two materials. In order to ensure the stability and controllability of the precision molding of the two-color mold of glass and silicone, one of the technical innovations is to introduce advanced molding process monitoring and control systems. Through real-time monitoring and feedback control, the molding parameters can be adjusted in time to achieve higher molding accuracy and consistency. This embodiment uses non-contact measurement technology to monitor key parameters such as temperature, shape and size during the molding process.

[0033] The precision of the two-color injection mold of glass and silicone materials in this embodiment reaches ±0.01mm, the molding cycle does not exceed 60 seconds, the efficiency is faster, and its service life is not less than 100,000 times. The surface finish of the molded product reaches Ra0.2p, the dimensional deviation of the molded product does not exceed 0.02mm, the molded product has excellent sealing performance, no leakage, easy installation, and a high pass rate.

[0034] It is further explained that the demoulding mechanism 2 includes a push rod 202 and a plurality of guide blocks 201 connected to the push rod 202 , wherein the push rod 202 is vertically arranged on the cavity, and the guide blocks 201 are symmetrically arranged on both sides of the upper mold base 1 .

[0035] It is further explained that the first injector 701 and the second injector 702 are symmetrically arranged on both sides of the lower mold base 7, the first injector 701 is used for injecting silicone material, and the second injector 702 is used for injecting glass material. The first injector 701 and the second injector 702 are both provided with an injection port 704 and a plurality of limiting rings 705, and the diameter of the limiting ring 705 decreases successively along the axial direction of the injection port 704.

[0036] It is further explained that the injection molding grooves 301 are symmetrically arranged on the mold core 3, the fixed structure 5 is arranged around the mold core 3, and the fixed structure 5 includes a fixed frame 502, wherein an injection molding channel 302 is arranged between the injection molding grooves 301, and the injection molding channel 302 is respectively connected to the first injector 701 and the second injector 702.

[0037] It is further explained that the lower die base 7 is also provided with a plurality of guide rods 703 connected to the upper die base 1 , and the upper die base 1 moves along the direction of the lower die base 7 via the guide rods 703 .

[0038] It is further explained that the adhesion-promoting mechanism also includes a conveying pipe 102 for connecting the drug dispenser 101 and a nozzle 105 connected to the conveying pipe 102, and a control valve 104 is provided on the conveying pipe 102, wherein the conveying pipe 102 connected to the nozzle 105 is inserted into the injection molding groove 301.

[0039] It is further explained that a plurality of condensation gas nozzles 501 are provided on the outer edge of the injection molding groove 301 , and the condensation gas nozzles 501 are connected to the control module.

[0040] It is further explained that the monitoring module 4 includes a temperature sensor 401, and the temperature sensor 401 is control-connected to the control module, and the control module also includes a signal transceiver module.

[0041] It is further explained that the locking structure 6 includes a fixing hoop 601, and the fixing hoop 601 is wedge-shaped.

[0042] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A two-color precision injection molding mold for different materials, comprising an upper mold base and a lower mold base for fixing on an injection molding machine, a cavity is provided between the upper mold base and the lower mold base, a demoulding mechanism is also provided between the upper mold base and the cavity, and a first injector and a second injector for injecting two different materials are provided on both sides of the cavity, characterized in that: The mold cavity includes a detachable mold core and a fixing structure for installing the mold core, and locking structures are provided on both sides of the mold core for the positions of the first injector and the second injector, and the locking structures are respectively connected to the first injector and the second injector, wherein a plurality of injection molding grooves are provided on the mold core, and an adhesion-promoting mechanism for assisting injection molding of two different materials is provided on the outer side of the injection molding groove; The upper mold base is also provided with a monitoring module and a control module, wherein the monitoring module is connected to the control module, and the control module is controlled and connected to an adhesion-promoting mechanism, wherein the adhesion-promoting mechanism includes a medicine dispenser and two independently arranged die presses, and the medicine dispenser is embedded in the upper mold base, wherein the positions of the die presses corresponding to the cavities are respectively arranged in the upper mold base and the lower mold base.

2. The heterogeneous material two-color precision injection molding mold according to claim 1, characterized in that: The demoulding mechanism comprises a push rod and a plurality of guide blocks connected to the push rod, wherein the push rod is vertically arranged on the cavity, and the guide blocks are symmetrically arranged on both sides of the upper mold base.

3. The heterogeneous material two-color precision injection molding mold according to claim 1, characterized in that: The first injector and the second injector are symmetrically arranged on both sides of the lower mold base. The first injector is used for injecting silicone material, and the second injector is used for injecting glass material. The first injector and the second injector are both provided with an injection port and a plurality of limiting rings, and the diameter of the limiting ring decreases successively along the axial direction of the injection port.

4. The heterogeneous material two-color precision injection molding mold according to claim 1, characterized in that: The injection molding grooves are symmetrically arranged on the mold core, the fixing structure is arranged around the mold core, and the fixing structure includes a fixing frame, wherein injection molding channels are arranged between the injection molding grooves, and the injection molding channels are respectively connected to the first injector and the second injector.

5. The heterogeneous material two-color precision injection molding mold according to claim 1, characterized in that: The lower die base is also provided with a plurality of guide rods connected with the upper die base, and the upper die base moves along the direction of the lower die base through the guide rods.

6. The heterogeneous material two-color precision injection molding mold according to claim 1, characterized in that: The adhesion-promoting mechanism also includes a delivery pipe for connecting to the medicine dispenser and a nozzle connected to the delivery pipe, wherein a control valve is provided on the delivery pipe, wherein the delivery pipe connected to the nozzle is inserted into the injection molding groove.

7. The heterogeneous material two-color precision injection molding mold according to claim 1, characterized in that: A plurality of condensing air nozzles are arranged on the outer edge of the injection molding groove, and the condensing air nozzles are connected to the control module.

8. The heterogeneous material two-color precision injection molding mold according to claim 1, characterized in that: The monitoring module includes a temperature sensor, which is control-connected to the control module. The control module also includes a signal transceiver module.

9. The heterogeneous material two-color precision injection molding mold according to claim 1, characterized in that: The locking structure comprises a fixing hoop which is wedge-shaped.

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