Injection molding device for double-color mold injection molding

Abstract

The present invention provides an injection molding device applied to double-color mold injection molding, comprising a double-color mold injection mold, the double-color mold injection mold comprising an upper mold base and a lower mold base, the upper mold base is arranged above the lower mold base, a hot runner mechanism is arranged above the upper mold base, a double-color mold injection molding mechanism is arranged between the upper mold base and the lower mold base, the double-color mold injection molding mechanism comprises a first lateral core pulling mechanism and a second lateral core pulling mechanism, the first lateral core pulling mechanism and the second lateral core pulling mechanism are centrally symmetrically arranged; the above structure, through the locking mold assembly, enables the first color mold device and the second color mold device to perform lateral core pulling when the mold is opened, thereby preventing the problem of insufficient core pulling stroke due to insufficient mold space, and continuously and evenly heating the plastic melt during the conveying process, so that the plastic always remains in a molten state during injection molding, ensuring the fluidity of the plastic during injection molding, so that it will not solidify and harden in the runner.

Description

Technical Field

[0001] The invention relates to the technical field of double-color molds, and in particular to an injection molding device used for double-color mold injection molding. Background Art

[0002] In the prior art, when parts of different materials are injected into a two-color mold, and molten materials of different materials are injected successively, the selection of the mold injection flow channel needs to take more consideration of economy due to the change of material temperature. In addition, the fixed mold plates of mold A and mold B are switched successively, while the movable mold plate is shared. During the switching process of the fixed mold plate of the two-color mold, the slider on the movable mold plate may be loose. The conventional limit device limits it, and manual assistance is required to release the limit function when demolding the B mold. The operation is relatively troublesome, which affects production efficiency.

[0003] A floating core-pulling two-color injection mold is disclosed in a patent document with Chinese patent application number 202110093024.6 and announcement date 2021.05.07. Two groups of cavities are symmetrically arranged on the fixed mold plate, two groups of cores and two groups of movable mold core-pulling inserts are symmetrically arranged on the movable mold plate, and a movable mold insert driving device for driving the movable mold core-pulling insert to move up and down is arranged between the movable mold plate and the movable mold fixed plate. Side oblique glue-pulling devices for mold closing and sealing are symmetrically arranged on the left and right sides of the fixed mold plate. The movable and fixed molds are closed, and the first During the first molding, the movable mold insert driving device drives the movable mold core-pulling insert to move upward, and the lateral oblique glue-pulling device moves forward to complete the first glue sealing, thereby forming a first mold cavity for molding the hard glue part of the product. After the first molding, the movable mold insert driving device drives the movable mold core-pulling insert to move downward, and the lateral oblique glue-pulling device moves backward to complete the second glue sealing, thereby forming a second mold cavity for molding the soft glue part of the product, thereby realizing two-color injection molding. This invention replaces the rotary two-color mold, has a simple structure, a simple process, high production efficiency and low cost.

[0004] However, the movable mold core pulling insert of the invention is arranged inside the mold and needs to be driven by a movable mold insert driving device to perform core pulling. Due to the narrow space inside the mold, the moving stroke of the movable mold core pulling insert is greatly limited, and it is impossible to achieve a large-scale core pulling action, making it difficult to ensure that the workpiece can be smoothly removed from the mold cavity.

[0005] In the existing injection molding production, the injection volume of the two colors of plastic is different. Therefore, when the first color plastic is injected, the second color plastic must be kept heated and ready for injection at any time. Similarly, when the second color plastic is injected, the first color plastic is waiting in a high temperature molten state so that continuous injection can be performed at any time. Otherwise, it will be impossible to realize the two pouring systems to alternately and continuously inject different colors of molten plastics into the mold cavity. Summary of the invention

[0006] The present invention provides an injection molding device for double-color mold injection molding. Through the device of the present invention, lateral core pulling can be better realized, and the device of the present invention can solve the problem that the high-temperature molten state cannot be maintained due to different injection volumes of two color plastics.

[0007] To achieve the above-mentioned purpose, the technical scheme of the present invention is: an injection molding device applied to double-color mold injection molding, comprising a double-color mold injection mold, the double-color mold injection mold comprising an upper mold base and a lower mold base, the upper mold base is arranged above the lower mold base, a hot runner mechanism is arranged above the upper mold base, a double-color mold injection molding mechanism is arranged between the upper mold base and the lower mold base, the double-color mold injection molding mechanism comprises a first lateral core pulling mechanism and a second lateral core pulling mechanism, two first lateral core pulling mechanisms are arranged, two second lateral core pulling mechanisms are arranged, a first color mold core is arranged between the upper mold base and the lower mold base and between the two first lateral core pulling mechanisms, and a first color mold core is arranged between the upper mold base and the lower mold base. A second color mold core is provided between the seats and between the two second lateral core-pulling mechanisms, a first cavity is provided in the first color mold core, and a second cavity is provided in the second color mold core, and the first lateral core-pulling mechanism and the second lateral core-pulling mechanism are centrally symmetrically arranged; the hot runner mechanism includes a first hot runner device and a second hot runner device, a hot runner plate is provided above the upper mold seat, the first hot runner device and the second hot runner device are arranged in the hot runner plate, and a first hot runner hole and a second hot runner hole are provided on the upper mold seat, the first hot runner device is connected to the first cavity through the first hot runner hole, and the second hot runner device is connected to the second cavity through the second hot runner hole.

[0008] In the above structure, after the first color molded part is injection molded, the upper mold base is fixed and the lower mold base moves downward to open the mold. At this time, under the action of the first locking assembly and the second locking assembly, the first color mold device and the second color mold device follow the lower mold base to move downward while moving toward the outer sides of the first color mold core and the second color mold core. When the lower mold base moves downward to a certain position, the first locking assembly and the second locking assembly are opened, and the first color mold device and the second color mold device can be separated from the lower mold base, and the lower mold base can continue to move downward to a rotatable position and then rotate to interchange the positions of the first color mold core and the second color mold core. After the interchange is completed, the lower mold base moves upward, and the first locking assembly and the second locking assembly reconnect the first color mold device and the second color mold device. When the lower mold base moves to contact the upper mold base, the mold is closed and the second color injection molding can be started. After the second color injection molding is completed, the lower mold base is continued to be opened, and the workpiece completed with two-color injection molding can be taken out to complete one injection molding process. The first color mold device and the second color mold device are driven to move downward on the lower mold base by the action of the locking assembly. The first color mold device and the second color mold device follow downward at the same time, thereby making the first color mold device and the second color mold device perform lateral core pulling when the mold is opened. Therefore, not only can core pulling be achieved, but also the lower mold base can be moved after the core pulling is completed. In the case of no interference, the lower mold base can achieve smooth rotation. When injection molding is performed, the first color plastic flows into the first cavity through the first hot runner device. During the transportation process, the first hot runner device heats the first color plastic, and continuously detects whether the first color plastic is in a molten state, and evenly heats the first color plastic, so that the first color plastic is always in a high-temperature molten state; the second color plastic flows into the second cavity through the second hot runner device. During the transportation process, the second hot runner device heats the second color plastic, and continuously detects whether the second color plastic is in a molten state, and evenly heats the second color plastic, so that the second color plastic is always in a high-temperature molten state, thereby making the plastic always remain in a molten state during injection molding, thereby ensuring the fluidity of the plastic during injection molding, so that it will not solidify and harden in the flow channel.

[0009] Furthermore, the first hot runner device includes a first diverter plate, a first main nozzle, a first heating component, a first hot nozzle and a first hot runner, the first diverter plate is arranged on the hot runner plate, the first main nozzle is arranged on the top of the first diverter plate, the first hot nozzle is arranged on the bottom of the first diverter plate, the first hot runner is arranged in the first diverter plate between the first main nozzle and the first hot nozzle, the first heating component is arranged on the first diverter plate; the first hot nozzle is connected to the first cavity.

[0010] The first heating assembly includes a first heating tube, a first main nozzle sensor, a first main nozzle heater, a first hot nozzle sensor and a first hot nozzle heater. A first heating pipe groove is provided at the top and bottom of the first diverter plate. The first heating pipe groove is arranged along the shape of the first diverter plate. The first heating tube is arranged in the first heating pipe groove. The first main nozzle sensor is connected to the first main nozzle. A first main nozzle heater is arranged on the first main nozzle sensor. The first hot nozzle sensor is connected to the first hot nozzle. A first hot nozzle heater is arranged on the first hot nozzle sensor. Thus, when the first color injection molding is performed, the plastic melt is injected from the first main nozzle, and the plastic enters the first hot runner and flows to the first hot nozzle. During the flow, the first heating tube continuously heats the first hot runner, so that the plastic is always in a high-temperature molten state. The first main nozzle sensor and the first hot nozzle sensor are also provided, which can detect the temperature of the plastic located at the first main nozzle and the first hot nozzle in real time, thereby controlling whether the plastic needs to be heated or cooled, thereby keeping the temperature of the plastic balanced when flowing to the first cavity.

[0011] Furthermore, the second hot runner device includes a second manifold plate, a second main nozzle, a second manifold, a second hot nozzle and a second heating tube, the second manifold plate is arranged in the second accommodating cavity of the hot runner plate, a second main nozzle is arranged at one end of the second manifold plate, a second manifold is arranged in the second manifold plate, the second manifold includes a main manifold and a hot nozzle manifold, the main manifold is connected to the second main nozzle, a hot nozzle manifold is arranged in the other end of the second manifold plate, the main manifold is also connected to the hot nozzle manifold, the second hot nozzle is arranged below the other end of the second manifold plate and connects the two ends of the hot nozzle manifold, a second heating tube is arranged at the top and bottom ends of the second manifold, and the second heating tube is arranged along the outer contour of the second manifold plate; a second heating tube is arranged on the second hot nozzle Two hot nozzle sensors, the second hot nozzle sensor is provided with a second hot nozzle heater, the second main nozzle is also provided with a heating ring, and the heating ring is provided with a second main nozzle sensor; the second hot nozzle is also connected to the second cavity, thereby, when the second color injection molding is carried out, the plastic melt is injected from the second main nozzle, the plastic enters the second branch channel and flows to the second hot nozzle, during the flow, the second heating tube continuously heats the second branch channel, so that the plastic is always in a high-temperature molten state, and a second main nozzle sensor and a second hot nozzle sensor are also provided, which can detect the temperature of the plastic located at the second main nozzle and the second hot nozzle in real time, so as to control whether the plastic needs to be heated or cooled, thereby keeping the temperature of the plastic balanced when flowing to the second cavity.

[0012] The first lateral core-pulling mechanism includes a first color mold device, a first color mold core is provided at one end of the lower mold base, and first color mold devices are respectively provided on both sides of the first color mold core, the first color mold device is connected to one end of the upper mold base, the first color mold core includes a first color mold core lower seat and a first color mold core upper seat, the first color mold core lower seat is arranged on the lower mold base, a first color mold core upper seat is provided above the first color mold core lower seat, a first injection through hole is provided on the first color mold core upper seat, a first cavity is arranged in the first color mold core upper seat, the first hot nozzle is arranged in the first injection through hole and is fixedly connected to the first injection through hole; the second lateral core-pulling mechanism includes a second color mold device, a second color mold core is provided at the other end of the lower mold base, and second color mold devices are respectively provided on both sides of the second color mold core, the second The color mold device is connected to the other end of the upper mold base, the second color mold core includes a second color mold core lower seat and a second color mold core upper seat, the second color mold core lower seat is arranged on the lower mold base, a second color mold core upper seat is arranged above the second color mold core lower seat, a second injection through hole is arranged on the second color mold core upper seat, the second cavity is arranged in the second color mold core upper seat, the second hot nozzle is arranged in the second injection through hole and fixedly connected to the first injection through hole; the first color mold device is provided with a first clamping assembly, the first clamping assembly is also connected to the lower mold base, the second color mold device is provided with a second clamping assembly, the second clamping assembly is also connected to the lower mold base, thereby, the plastic melt flows from the hot runner mechanism to the first lateral core pulling mechanism and the second lateral core pulling mechanism to perform first color and second color injection molding processing.

[0013] Further, the first color mold device includes a first color mold seat, a first color mold oblique guide block, a first color mold limiting block, a first color mold oblique guide column and a first color mold fixing block, the first color mold fixing block is fixedly connected to the upper mold seat, a first color mold oblique guide column is arranged on the first color mold fixing block, the first color mold oblique guide column is inclined from top to outside of the first color mold core, a first color mold oblique through hole corresponding to the first color mold oblique guide column is arranged on the first color mold seat, the first color mold oblique guide column is slidably connected in the first color mold oblique through hole, and a first color mold oblique guide column is arranged on one side of the first color mold seat to extend downward and outward from the top of the first color mold seat. A first color mold limiting groove to the bottom end of the first color mold seat, a first limiting portion is provided on the first color mold seat at the upper end of the first color mold limiting groove, a first color mold limiting block is provided in the first color mold limiting groove, the first color mold limiting block is connected to the upper mold seat through the first color mold limiting block column, and first color mold oblique guide grooves are provided at both ends of the first color mold seat, which extend downward and outward from the top end of the first color mold seat to the bottom end of the first color mold seat, the inclination angle of the first color mold oblique guide groove is the same as the inclination angle of the first color mold oblique guide column, the first color mold oblique guide block is arranged in the first color mold oblique guide groove, and the first color mold oblique guide block passes through The upper mold base is connected to the upper mold base through the first color mold oblique guide block connecting column, and a first locking mold assembly is provided below the first color mold base; the first color mold device is provided with two, and the first color mold core is arranged between the first color mold devices, thereby arranging that when the lower mold base moves downward, the first color mold oblique guide block is fixed, and under the action of the first locking mold assembly, the first color mold base moves downward with the first locking mold assembly, and under the action of the first color mold oblique guide column and the first color mold oblique through hole, the first color mold oblique guide groove and the first color mold oblique guide block are guided, and the first color mold base moves to both sides of the first color mold core, thereby slowly opening the first color mold device. The first color mold base is open, and because a first color mold limit block fixed to the upper mold base is provided, when the first color mold base moves downward, the first color mold limit block slides relatively in the first color mold limit groove. When the first color mold limit block contacts the first limit portion at the top of the first color mold limit groove, the first color mold base is stuck, thereby stopping the movement of the first color mold base. At this time, the first locking mold assembly is disengaged, and the lower mold base can continue to move downward, while the first color mold base stops moving. In this way, lateral core pulling can be further and better realized, and after lateral core pulling, the lower mold base can continue to move downward and the first color mold device stops moving.

[0014] Further, the first mold locking assembly includes a first mold locking connection block and a first mold locking fixed block, the first mold locking fixed block is fixedly connected to the lower mold base, the first mold locking connection block is arranged on the first color mold base, the first mold locking fixed block includes a first mold locking fixed part and a first mold locking limiting part, the first mold locking fixed part is connected to the lower mold base, and a first mold locking limiting part is arranged at the top of the first mold locking fixed part, the first mold locking connection block includes a first mold locking connection fixing part and a first mold locking connection part, the first mold locking connection fixing part is arranged at the bottom end of the first color mold base, and a first mold locking connection part is arranged on the first mold locking connection fixing part, and the first mold locking limiting part is pressed and connected to the first mold locking connection part, thereby, when the lower mold base moves downward, the first color mold base will move to both sides of the first color mold core and drive the first mold locking The connecting block moves, and when the first color mold base moves downward to the first limiting part at the top end of the first color mold limiting groove, the first locking mold connecting block disengages from the first locking mold fixing block, thereby the lower mold base is disconnected from the first color mold device, and the lower mold base can continue to move downward and then rotate, so as to avoid the lower mold base from interfering with the first color mold device or the second color mold device during rotation; the top end of the first locking mold limiting part is provided with an arc surface extending outward and downward in an arc shape from the center of the first locking mold limiting part, and the top end of the first locking mold connecting part is provided with an arc surface extending outward and downward in an arc shape from the center of the first locking mold connecting part, thereby, when the upper mold base and the lower mold base are molded, the first locking mold connecting part and the first locking mold limiting part contact each other, and the first locking mold connecting part is more conveniently slid to the bottom of the first locking mold limiting part through the action of the arc surface.

[0015] Furthermore, a first color mold is provided on the other side of the first color mold seat, the first color mold core lower seat is arranged between the two first color molds, the first color mold core upper seat is arranged above the first color mold and covers and connects to the first color mold, and an injection space is formed between the first color mold core upper seat, the first color mold core lower seat and the first color mold. According to this arrangement, after the first mold closing is completed, the first color injection can be performed in the first injection space.

[0016] Further, the second color mold device includes a second color mold base, a second color mold oblique guide block, a second color mold limiting block, a second color mold oblique guide column and a second color mold fixed block, the second color mold fixed block is fixedly connected to the upper mold base, a second color mold oblique guide column is arranged on the second color mold fixed block, the second color mold oblique guide column is inclined from top to outside of the second color mold core, a second color mold oblique through hole corresponding to the second color mold oblique guide column is arranged on the second color mold base, the second color mold oblique guide column is slidably connected in the second color mold oblique through hole, and a second color mold oblique guide column is arranged on one side of the second color mold base, which extends downward and outward from the top of the second color mold base. A second color mold limiting groove extending to the bottom end of the second color mold base, a second limiting portion is provided on the second color mold base at the upper end of the second color mold limiting groove, a second color mold limiting block is provided in the second color mold limiting groove, the second color mold limiting block is connected to the upper mold base through the second color mold limiting block column, and second color mold oblique guide grooves are provided at both ends of the second color mold base, which extend downward and outward from the top end of the second color mold base to the bottom end of the second color mold base, the inclination angle of the second color mold oblique guide groove is the same as the inclination angle of the second color mold oblique guide column, the second color mold oblique guide block is arranged in the second color mold oblique guide groove, and the second color mold oblique guide block The upper mold base is connected through the second color mold oblique guide block connecting column, and a second locking mold assembly is provided below the second color mold base; the second color mold device is provided with two, and the second color mold core is arranged between the second color mold devices. Thus, when the lower mold base moves downward, the second color mold oblique guide block is fixed, and under the action of the second locking mold assembly, the second color mold base moves downward with the second locking mold assembly. Under the action of the second color mold oblique guide column and the second color mold oblique through hole, the second color mold oblique guide groove and the second color mold oblique guide block are guided, and the second color mold base moves to both sides of the second color mold core, thereby slowly opening the second color mold device. The second color mold base is open, and because a second color mold limit block fixed to the upper mold base is provided, when the second color mold base moves downward, the second color mold limit block slides relatively in the second color mold limit groove, and when the second color mold limit block contacts the second limit portion at the top end of the second color mold limit groove, the second color mold base is stuck, thereby stopping the second color mold base from moving. At this time, the second locking mold assembly is disengaged, and the lower mold base can continue to move downward, while the second color mold base stops moving. In this way, the lateral core pulling can be further and better realized, and the lower mold base can continue to move downward after the lateral core pulling, and the second color mold device stops moving.

[0017] Further, the second mold locking assembly includes a second mold locking connection block and a second mold locking fixed block, the second mold locking fixed block is fixedly connected to the lower mold base, the second mold locking connection block is arranged on the second color mold base, the second mold locking fixed block includes a second mold locking fixed part and a second mold locking limiting part, the second mold locking fixed part is connected to the lower mold base, and a second mold locking limiting part is arranged at the top of the second mold locking fixed part, the second mold locking connection block includes a second mold locking connection fixing part and a second mold locking connection part, the second mold locking connection fixing part is arranged at the bottom end of the second color mold base, and a second mold locking connection part is arranged on the second mold locking connection fixing part, and the second mold locking limiting part is pressed and connected to the second mold locking connection part, thereby arranging that when the lower mold base moves downward, the second color mold base will move to The two sides of the second color mold core move and drive the second locking mold connecting block to move. When the second color mold base moves downward to the top of the second color mold limiting groove, the second locking mold connecting block disengages from the second locking mold fixing block, thereby the lower mold base is disconnected from the second color mold device, and the lower mold base can continue to move downward and rotate; the top of the second locking mold limiting part is provided with an arc surface extending outward and downward in an arc shape from the center of the second locking mold limiting part, and the top of the second locking mold connecting part is provided with an arc surface extending outward and downward in an arc shape from the center of the second locking mold connecting part. Thus, when the upper mold base and the lower mold base are closed, the second locking mold connecting part and the second locking mold limiting part contact each other, and the second locking mold connecting part is more conveniently slid to the bottom of the second locking mold limiting part through the action of the arc surface.

[0018] Furthermore, a second color mold is provided on the other side of the second color mold base, the second color mold core lower seat is arranged between the two second color molds, the second color mold core upper seat is arranged above the second color mold and covers and connects to the second color mold, and an injection space is formed between the second color mold core upper seat and the second color mold core lower seat and the second color mold. According to this arrangement, after the second mold closing is completed, the second color injection can be carried out in the second injection space. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an exploded schematic diagram of the double-color mold injection molding device of the present invention.

[0020] Figure 2 It is a schematic diagram of the structure of the first hot runner device of the present invention.

[0021] Figure 3 It is a cross-sectional view of the first hot runner device of the present invention.

[0022] Figure 4 It is a schematic diagram of the mechanism of the second hot runner device of the present invention.

[0023] Figure 5 It is a cross-sectional view of the second manifold in the second hot runner device of the present invention.

[0024] Figure 6 It is a structural schematic diagram of the double-color mold injection molding mechanism of the present invention.

[0025] Figure 7 The figure is a schematic structural diagram of the double-color injection molding mechanism of the present invention without the upper mold base.

[0026] Figure 8 It is a schematic exploded view of the first color mode device of the present invention.

[0027] Fig. 9 It is a schematic structural diagram of the first clamping assembly of the present invention.

[0028] Fig.10 Schematic diagram of the explosion of the second color mode device of the present invention.

[0029] Fig.11 It is a schematic diagram of the mechanism of the second clamping assembly of the present invention.

[0030] Fig.12 It is an exploded schematic diagram of the first lateral core pulling mechanism and the second lateral core pulling mechanism of the present invention.

[0031] Fig.13 It is a schematic diagram of the connection between the hot runner mechanism and the double-color mold injection mechanism of the present invention. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figures 1 to 13 As shown, an injection molding device for double-color mold injection molding includes a double-color mold injection mold, and the double-color mold injection mold includes an upper mold plate 01, a hot runner plate 70, an upper mold base 1, a lower mold base 2, a support plate 02 and a lower mold plate 100. The upper mold plate 01 is mounted on the upper end of the hot runner plate 70, the hot runner plate 70 is mounted on the upper end of the upper mold base 1, the lower mold base 2 is mounted on the support plate 02, and the support plate 02 is mounted on the lower mold plate 100. A first cavity and a second cavity are provided at the bottom of the upper mold base 1. The upper mold base 1 is arranged above the lower mold base 2, and a hot runner mechanism 7 is arranged above the upper mold base 1. A two-color mold injection molding mechanism 03 is arranged between the upper mold base 1 and the lower mold base 2, and the two-color mold injection molding mechanism 03 includes a first lateral core pulling mechanism 3 and a second lateral core pulling mechanism 4, and the first lateral core pulling mechanism 3 and the second lateral core pulling mechanism 4 are centrally symmetrically arranged; the hot runner mechanism 7 includes a first hot runner device 71 and a second hot runner device 72, and a hot runner plate 70 is arranged above the upper mold base 1, and the first hot runner device 71 and the second hot runner device 72 are arranged in the hot runner plate 70, and a first hot runner hole 11 and a second hot runner hole 12 (in Figure 6As shown in FIG. 1 , the first hot runner device 71 is connected to the first cavity through the first hot runner hole 11, and the second hot runner device 72 is connected to the second cavity through the second hot runner hole 12.

[0034] In order to better realize the movement guidance of the upper and lower mold bases, a guide sleeve is installed on the upper mold base 1, and guide pillars 200 corresponding to the upper and lower positions of the guide sleeve and the same number are installed on the lower mold base 2. In order to better realize the ejection of the workpiece, an ejection mechanism 300 passing through the lower mold base 2 is installed on the lower mold plate 100. In this embodiment, the ejection mechanism 300 is an existing structure.

[0035] like Figure 2 and Figure 3 As shown, the first hot runner device 71 includes a first manifold plate 711, a first main nozzle 712, a first heating assembly 713, a first hot nozzle 714 and a first hot runner 715 (in Figure 3 As shown in the figure, the first diverter plate 711 is arranged in the first accommodating cavity 700 of the hot runner plate 70, a first main nozzle 712 is provided at the top end of the first diverter plate 711, a first hot nozzle 714 is provided at the bottom end of the first diverter plate 711, a first hot runner 715 is provided in the first diverter plate 711 between the first main nozzle 712 and the first hot nozzle 714, and the first heating component 713 is arranged on the first diverter plate 711; the first hot nozzle 714 is connected to the first cavity.

[0036] The first heating assembly 713 includes a first heating tube 710, a first main nozzle sensor 716, a first main nozzle heater 717, a first nozzle sensor 718 and a first nozzle heater 719. A first heating pipe groove 7101 is provided at the top and bottom of the first diverter plate 711. The first heating pipe groove 7101 is arranged along the length direction of the first diverter plate 711. The first heating tube 710 is arranged in the first heating pipe groove 7101. The first main nozzle sensor 716 is connected to the first main nozzle 712. A first main nozzle heater 717 is provided on the first main nozzle sensor 716. The first nozzle sensor 718 is connected to the first nozzle 712. 4. A first hot nozzle heater 719 is provided on the first hot nozzle sensor 718. Thus, when the first color injection molding is performed, the plastic melt is injected from the first main nozzle 712, and the plastic enters the first hot runner 715 and flows to the first hot nozzle 714. During the flow, the first heating tube 710 continuously heats the first hot runner 715, so that the plastic is always in a high-temperature molten state. A first main nozzle sensor 716 and a first hot nozzle sensor 718 are also provided, which can detect the temperature of the plastic located at the first main nozzle 712 and the first hot nozzle 714 in real time, so as to control whether the plastic needs to be heated or cooled, thereby keeping the temperature of the plastic balanced when flowing to the first cavity.

[0037] like Figure 4 and Figure 5 As shown, the second hot runner 72 device includes a second manifold plate 721, a second main nozzle 722, a second manifold 723 (in Figure 5 ), a second hot nozzle 724 and a second heating tube 725, the second manifold plate 721 is arranged in the second accommodating cavity 701 of the hot runner plate 70, a second main nozzle 722 is arranged at one end of the second manifold plate 721, a second manifold channel 723 is arranged in the second manifold plate 721, and the second manifold channel 723 includes a main manifold channel 7231 and a hot nozzle channel 7232 (in Figure 5 As shown in the figure, the main flow diversion channel 7231 is connected to the second main nozzle 722, and a hot nozzle flow channel 7232 is provided in the other end of the second diverter plate 721, and the main flow diversion channel 7231 is also connected to the hot nozzle flow channel 7232. The second hot nozzle 724 is arranged below the other end of the second diverter plate 721 and connects the two ends of the hot nozzle flow channel 7232. A second heating tube 725 is provided at the top and bottom of the second diverter channel 723, and the second heating tube 725 is arranged along the outer contour shape of the second diverter plate; a second hot nozzle sensor 7241 is provided on the second hot nozzle sensor 7241, and a second hot nozzle heater 7242 is provided on the second main nozzle 722. A heating ring 7221 (in Figure 5 As shown in the figure, a second main nozzle sensor 7222 is provided on the heating coil 7221; the second hot nozzle 724 is also connected to the second cavity, and thus, when the second color injection molding is performed, the plastic melt is injected from the second main nozzle 722, and the plastic enters the second branch channel 723 and flows to the second hot nozzle 724. During the flow, the second heating tube 725 continuously heats the second branch channel 723, so that the plastic is always in a high-temperature molten state, and a second main nozzle sensor 7222 and a second hot nozzle sensor 7241 are also provided, which can detect the temperature of the plastic located at the second main nozzle 722 and the second hot nozzle 724 in real time, so as to control whether the plastic needs to be heated or cooled, thereby keeping the temperature of the plastic balanced when flowing to the second cavity.

[0038] like Figures 6 to 13 As shown, the first lateral core-pulling mechanism 3 includes a first color mold device 5, a first color mold core 31 is installed at one end of the lower mold base 2, and the first color mold devices 5 are respectively provided on both sides of the first color mold core 31, the first color mold device 5 is connected to one end of the upper mold base 1, and the first color mold device 5 can move relative to the upper mold base 1, and the first color mold core 31 includes a first color mold core lower seat 311 and a first color mold core upper seat 312 (at Fig.13As shown in the figure, the first color mold core lower seat 311 is arranged on the lower mold base 2, and a first color mold core upper seat 312 is arranged above the first color mold core lower seat 311, and a first injection through hole 313 is arranged on the first color mold core upper seat 312, and a first cavity is arranged on the first color mold core upper seat 312, and the first hot nozzle 714 is arranged in the first injection through hole 313 and fixedly connected to the first injection through hole 313; the second lateral core pulling mechanism 4 includes a second color mold device 6, a second color mold core 41 is installed at the other end of the lower mold base 2, and second color mold devices 6 are respectively arranged on both sides of the second color mold core 41, the second color mold device 6 is connected to the other end of the upper mold base 1 and the second color mold device 6 can move relative to the upper mold base 1, the second color mold core 41 includes a second color mold core lower seat 411 and a second color mold core upper seat 412 (in Fig.13 As shown in the figure, the second color mold core lower seat 411 is arranged on the lower mold base 2, and a second color mold core upper seat 412 is arranged above the second color mold core lower seat 411, and a second injection through hole 413 is arranged on the second color mold core upper seat 412, and a second cavity is arranged on the second color mold core upper seat 412, and the second hot nozzle 724 is arranged in the second injection through hole 413 and fixedly connected to the first injection through hole 413; the first color mold device 5 is provided with a first clamping assembly 50, and the first clamping assembly 50 is also connected to the lower mold base 2, and the second color mold device 6 is provided with a second clamping assembly 60, and the second clamping assembly 60 is also connected to the lower mold base 2.

[0039] like Figure 7 and Figure 8 As shown, the first color mold device 5 includes a first color mold seat 51, a first color mold oblique guide block 52, a first color mold limit block 53, a first color mold oblique guide column 54 and a first color mold fixed block 55. The first color mold fixed block 55 is fixedly connected to the upper mold seat 1. The first color mold oblique guide column 54 is arranged on the first color mold fixed block 55. The first color mold oblique guide column 54 is inclined from top to bottom toward the outer side of the first color mold core 31. The upper end of the first color mold oblique guide column 54 has a first step, and the first step is located at the first The first color mold oblique guide column 54 is axially limited by the upper mold base 1 in the first step hole at the upper end of the color mold fixing block 55, and a first color mold oblique through hole 541 corresponding to the first color mold oblique guide column 54 is provided on the first color mold base 51, and the first color mold oblique guide column 54 is slidably connected in the first color mold oblique through hole 541, and a first color mold limiting groove 531 (at the bottom of the first color mold base 51) extending downward and outward from the top of the first color mold base 51 to the bottom of the first color mold base 51 is provided on one side of the first color mold base 51. Figure 7As shown in the figure, a first limiting portion 5311 is provided on the first color mold base 51 at the upper end of the first color mold limiting groove 531. In this embodiment, the outer side surface of the first color mold base 51 is an inclined surface, and the inclination angle of the first color mold limiting groove 531 is the same as the inclination angle of the first color mold oblique guide column 54. A first color mold limiting block 53 is provided in the first color mold limiting groove 531. The first color mold limiting block 53 is connected to the upper mold base through a first color mold limiting block column (not shown in the figure). A first color mold base 51 is provided at both ends thereof. The top end of the first color mold oblique guide groove 521 is inclined downward and outward and extends to the bottom end of the first color mold seat 51. The inclination angle of the first color mold oblique guide groove 521 is the same as the inclination angle of the first color mold oblique guide column 54. The first color mold oblique guide block 52 is arranged in the first color mold oblique guide groove 521. The first color mold oblique guide block 52 is connected to the upper mold seat 1 through the first color mold oblique guide block connecting column (not shown in the figure). A first clamping mold assembly 50 is arranged below the first color mold seat 51; the first color mold device 5 is provided with two, and the first color mold core 31 is arranged in the first The color mold device 5 is arranged between the color mold devices 5, and thus, when the lower mold base 2 moves downward, the first color mold oblique guide block 52 is fixed, and the first color mold base 51 moves downward with the first clamping mold assembly 50. Under the action of the first color mold oblique guide column 54 and the first color mold oblique through hole 541, due to the guiding action of the first color mold oblique guide groove 521, the first color mold base 51 moves toward the outside of the first color mold core 31, thereby slowly opening the first color mold device 5 laterally, and because the first color mold limit block 53 fixed to the upper mold base 1 is provided, the first color mold base 51 moves toward the outside of the first color mold core 31. When moving downward, the first color mold limit block 53 slides relatively in the first color mold limit groove 531. When the first color mold limit block 53 contacts the first limit portion at the top of the first color mold limit groove 531, the first color mold base 51 is stuck, so that the first color mold base 51 stops moving. At this time, the first locking mold assembly is disengaged, and the lower mold base can continue to move downward, while the first color mold base stops moving. In this way, lateral core pulling can be further and better realized, and after lateral core pulling, the lower mold base can continue to move downward and the first color mold device stops moving.

[0040] like Figures 7 to 9As shown, the first mold locking assembly 50 includes a first mold locking connection block 501 and a first mold locking fixed block 502, the first mold locking fixed block 502 is fixedly connected to the lower mold base 2, the first mold locking connection block 501 is arranged on the first color mold base 51, the first mold locking fixed block 502 includes a first mold locking fixed part 5021 and a first mold locking limiting part 5022, the first mold locking fixed part 5021 is connected to the lower mold base 2, and the first mold locking limiting part 5022 is arranged on the top of the first mold locking fixed part 5021, the first mold locking connection block 501 includes a first mold locking connection fixed part 5011 and a first mold locking connection part 5012, the first mold locking connection fixed part 5011 is arranged on the first color mold base 51, At the bottom end of a color mold base 51, a first locking mold connecting portion 5012 is provided on the first locking mold connecting fixed portion 5011, and the first locking mold limiting portion 5022 is pressed and connected to the first locking mold connecting portion 5012. Thus, when the lower mold base 2 moves downward, the first color mold base 51 will move toward the outside of the first color mold core 31 and drive the first locking mold connecting block 501 to move. When the first color mold base 51 moves downward to the first limiting portion at the top end of the first color mold limiting groove 531, the first locking mold connecting block 501 is separated from the first locking mold fixing block 502, thereby disconnecting the lower mold base 2 from the first color mold device 5, and the lower mold base 2 can continue to move downward and then rotate, which can better avoid interference.

[0041] like Fig. 9 As shown, the top end of the first mold locking limit portion 5022 is provided with an arcuate surface extending outward and downward from the center of the first mold locking limit portion 5022, and the top end of the first mold locking connection portion 5012 is provided with an arcuate surface extending outward and downward from the center of the first mold locking connection portion 5012. Thus, when the upper mold base 1 and the lower mold base 2 are closed, the first mold locking connection portion 5012 contacts the first mold locking limit portion 5022, and the first mold locking connection portion is more conveniently slid to the bottom of the first mold locking limit portion through the action of the arcuate surface.

[0042] like Figure 8 , Fig.12 and Fig.13 As shown, a first color mold 511 is provided on the other side of the first color mold base 51, the first color mold core lower seat 311 is arranged between the two first color molds 511, the first color mold core upper seat 312 is arranged above the first color mold 511 and covers and connects the first color mold 511, and an injection space (not shown in the figure) is formed between the first color mold core upper seat 312 and the first color mold core lower seat 311 and the first color mold 511. According to this arrangement, after the first mold closing is completed, the first color injection can be performed in the first injection space.

[0043] like Figure 7 and Fig.10As shown, the second color mold device 6 includes a second color mold base 61, a second color mold oblique guide block 62, a second color mold limiting block 63, a second color mold oblique guide column 64 and a second color mold fixed block 65, the second color mold fixed block 65 is fixedly connected to the upper mold base 1, and a second color mold oblique guide column 64 is provided on the second color mold fixed block 65, and the second color mold oblique guide column is inclined from top to outside of the second color mold core, and the upper end of the second color mold oblique guide column 64 has a second step, and the second step is located in the second step hole at the upper end of the second color mold fixed block 65, and the second color mold oblique guide column is axially limited by the upper mold base 1, and a second color mold oblique through hole 641 corresponding to the second color mold oblique guide column 64 is provided on the second color mold base 61, and the second color mold oblique guide column 64 is slidably connected in the second color mold oblique through hole 641, and a second color mold limiting groove 631 (at the bottom of the second color mold base 61) extending downward and outward from the top of the second color mold base 61 to the bottom of the second color mold base 61 is provided on one side of the second color mold base 61. Figure 7As shown in the figure, a second limiting portion 6311 is provided on the second color mold base 61 at the upper end of the second color mold limiting groove 631. In this embodiment, the outer side surface of the second color mold base 61 is an inclined surface, and the inclination angle of the second color mold limiting groove 631 is the same as the inclination angle of the second color mold oblique guide column 64. A second color mold limiting block 63 is provided in the second color mold limiting groove 631. The second color mold limiting block 63 is connected to the upper mold base 1 through a second color mold limiting block column (not shown in the figure). A second color mold oblique guide groove 621 extends downward and outward from the top of the second color mold base 61 to the bottom of the second color mold base 61, and the inclination angle of the second color mold oblique guide groove 621 is the same as the inclination angle of the second color mold oblique guide column 64. The second color mold oblique guide block 62 is arranged in the second color mold oblique guide groove 621. The second color mold oblique guide block 62 is connected to the upper mold base 1 through the second color mold oblique guide block connecting column (not shown in the figure). A second clamping mold assembly 60 is arranged below the second color mold base 61; the second color mold device 6 is provided with The second color mold core 41 is arranged between the second color mold device 6, and thus, when the lower mold base 2 moves downward, the second color mold oblique guide block 62 is fixed, and the second color mold base 61 moves downward with the second clamping mold assembly 60. Due to the guiding effect of the second color mold oblique guide groove 621, the second color mold base 61 moves to the outside of the second color mold core 41, thereby the second color mold device 6 can be slowly opened, and because a second color mold limiting block 63 fixed to the upper mold base 1 is provided, when the second color mold base 61 moves downward, the second color mold The two-color mold limit block 63 slides relatively in the second color mold limit groove 631. When the second color mold limit block 63 contacts the second limit portion at the top of the second color mold limit groove 631, the second color mold base 61 is stuck, so that the second color mold base 61 stops moving. At this time, the second locking mold assembly is disengaged, and the lower mold base can continue to move downward, while the second color mold base stops moving. In this way, the lateral core pulling can be further and better realized, and the lower mold base can continue to move downward after the lateral core pulling, so that the second color mold device stops moving.

[0044] like Fig.10 and Fig.11As shown, the second mold locking assembly 60 includes a second mold locking connection block 601 and a second mold locking fixed block 602, the second mold locking fixed block 602 is fixedly connected to the lower mold base 2, the second mold locking connection block 601 is arranged on the second color mold base 61, the second mold locking fixed block 602 includes a second mold locking fixed part 6021 and a second mold locking limiting part 6022, the second mold locking fixed part 6021 is connected to the lower mold base 2, and a second mold locking limiting part 6022 is arranged on the top of the second mold locking fixed part 6021, the second mold locking connection block 601 includes a second mold locking connection fixed part 6011 and a second mold locking connection part 6012, and the second mold locking connection fixed part 6011 is arranged on At the bottom end of the second color mold base 61, a second locking mold connecting portion 6012 is provided on the second locking mold connecting fixed portion 6011, and the second locking mold limiting portion 6022 is pressed and connected to the second locking mold connecting portion 6012. Thus, when the lower mold base 2 moves downward, the second color mold base 61 will move toward the outside of the second color mold core 41 and drive the second locking mold connecting block 601 to move. When the second color mold base 61 moves downward to the second limiting portion at the top end of the second color mold limiting groove 631, the second locking mold connecting block 601 is separated from the second locking mold fixing block 602, thereby the lower mold base 2 is disconnected from the second color mold device 6, and the lower mold base can continue to move downward and then rotate, which can better avoid interference.

[0045] like Fig.11 As shown, the top end of the second mold locking limit portion 6022 is provided with an arc surface extending outward and downward in an arc shape from the center of the second mold locking limit portion 6022, and the top end of the second mold locking connection portion 6012 is provided with an arc surface extending outward and downward in an arc shape from the center of the second mold locking connection portion 6012. Thus, when the upper mold base 1 and the lower mold base 2 are closed, the second mold locking connection portion 6012 contacts the second mold locking limit portion 6022, and the second mold locking connection portion is more conveniently slid to the bottom of the second mold locking limit portion through the action of the arc surface.

[0046] like Fig.10 , Fig.12 and Fig.13 As shown, a second color mold 611 is provided on the other side of the second color mold base 61, the second color mold core lower seat 411 is arranged between the two second color molds 611, the second color mold core upper seat 412 is arranged above the second color mold 611 and covers and connects the second color mold 611, and an injection space (not shown in the figure) is formed between the second color mold core upper seat 412 and the second color mold core lower seat 411 and the second color mold 611. According to this arrangement, after the second mold closing is completed, the second color injection molding can be carried out in the second injection molding space.

[0047] In the above structure, after the first color molded part is injection molded, the upper mold base 1 is fixed and the lower mold base 2 moves downward to open the mold. At this time, under the action of the first clamping assembly and the second clamping assembly, the first color mold device 5 and the second color mold device 6 move toward the outer side of the first color mold core 31 and the second color mold core 32 while following the downward movement of the lower mold base 2. When the lower mold base 2 moves downward to a certain position, the first clamping assembly 50 and the second clamping assembly 60 are opened, and the first color mold device 5 and the second color mold device 6 can be separated from the lower mold base 2, and the lower mold base 2 can continue to After the lower mold base 2 is moved down to a position where it can rotate, it is rotated to interchange the positions of the first color mold core 31 and the second color mold core 41. After the interchange is completed, the lower mold base 2 moves upward, and the first clamping assembly 50 and the second clamping assembly 60 reconnect the first color mold device 5 and the second color mold device 6. When the lower mold base 2 moves to contact the upper mold base 1, the mold is closed and the second color injection molding can be started. After the second color injection molding is completed, the lower mold base 2 is opened and the workpiece after the two-color injection molding is taken out to complete the one-time injection molding process. The first color mold device and the second color mold device are driven by the action of the clamping assembly. The color mold device follows the lower mold base downward when it moves downward, so that the first color mold device and the second color mold device can perform lateral core pulling when the mold is opened. Therefore, not only can core pulling be achieved, but the lower mold base can also be moved after the core pulling is completed. Without interference, the lower mold base can achieve smooth rotation. When injection molding is performed, the first color plastic flows into the first cavity through the first hot runner device 71. During the transportation process, the first hot runner device 71 heats the first color plastic, and continuously detects whether the first color plastic is in a molten state, and evenly heats the first color plastic so that the first color plastic is always in a high-temperature molten state. The second color plastic flows into the second cavity through the second hot runner device 72. During the transportation process, the second hot runner device 72 heats the second color plastic, and continuously detects whether the second color plastic is in a molten state, and evenly heats the second color plastic so that the second color plastic is always in a high-temperature molten state. Therefore, the plastic always remains in a molten state during injection molding, thereby ensuring the fluidity of the plastic during injection molding and preventing it from solidifying and hardening in the flow channel.

Claims

1. An injection molding device for double-color mold injection molding, comprising a double-color mold injection mold, wherein the double-color mold injection mold comprises an upper mold base and a lower mold base, wherein the upper mold base is arranged above the lower mold base, and is characterized in that: A hot runner mechanism is provided above the upper mold base, a two-color mold injection mechanism is provided between the upper mold base and the lower mold base, the two-color mold injection mechanism includes a first lateral core pulling mechanism and a second lateral core pulling mechanism, two first lateral core pulling mechanisms are provided, two second lateral core pulling mechanisms are provided, a first color mold core is provided between the upper mold base and the lower mold base and between the two first lateral core pulling mechanisms, a second color mold core is provided between the upper mold base and the lower mold base and between the two second lateral core pulling mechanisms, a first cavity is provided in the first color mold core, A second cavity is provided in the second color mold core, and the first lateral core pulling mechanism and the second lateral core pulling mechanism are centrally symmetrically arranged; the hot runner mechanism includes a first hot runner device and a second hot runner device, a hot runner plate is provided above the upper mold base, the first hot runner device and the second hot runner device are arranged in the hot runner plate, and a first hot runner hole and a second hot runner hole are provided on the upper mold base, the first hot runner device is connected to the first cavity through the first hot runner hole, and the second hot runner device is connected to the second cavity through the second hot runner hole; The first lateral core-pulling mechanism includes a first color mold device, a first color mold core is provided at one end of the lower mold base, and first color mold devices are provided on both sides of the first color mold core respectively, the first color mold device is connected to one end of the upper mold base, the first color mold core includes a first color mold core lower seat and a first color mold core upper seat, the first color mold core lower seat is arranged on the lower mold base, a first color mold core upper seat is arranged above the first color mold core lower seat, a first injection through hole is arranged on the first color mold core upper seat, a first cavity is arranged in the first color mold core upper seat, a first hot nozzle is arranged in the first injection through hole and is fixedly connected to the first injection through hole; the second lateral core-pulling mechanism includes a second color mold device, a second color mold core is provided at the other end of the lower mold base, A second color mold device is provided on both sides of the second color mold core, the second color mold device is connected to the other end of the upper mold base, the second color mold core includes a second color mold core lower seat and a second color mold core upper seat, the second color mold core lower seat is arranged on the lower mold base, a second color mold core upper seat is arranged above the second color mold core lower seat, a second injection through hole is arranged on the second color mold core upper seat, a second cavity is arranged in the second color mold core upper seat, a second hot nozzle is arranged in the second injection through hole and fixedly connected to the first injection through hole; a first clamping mold assembly is provided on the first color mold device, the first clamping mold assembly is also connected to the lower mold base, and a second clamping mold assembly is provided on the second color mold device, the second clamping mold assembly is also connected to the lower mold base; The first color mold device comprises a first color mold seat, a first color mold oblique guide block, a first color mold limiting block, a first color mold oblique guide column and a first color mold fixing block, wherein the first color mold fixing block is fixedly connected to the upper mold seat, a first color mold oblique guide column is arranged on the first color mold fixing block, the first color mold oblique guide column is inclined from top to outside of the first color mold core, a first color mold oblique through hole corresponding to the first color mold oblique guide column is arranged on the first color mold seat, the first color mold oblique guide column is slidably connected in the first color mold oblique through hole, a first color mold limiting groove is arranged on one side of the first color mold seat, and extends downward and outward from the top end of the first color mold seat to the bottom end of the first color mold seat, and a first color mold limiting groove is arranged on the first color mold seat at the upper end of the first color mold limiting groove. A first limiting portion is provided at the end, a first color mold limiting block is provided in the first color mold limiting groove, the first color mold limiting block is connected to the upper mold base through the first color mold limiting block column, and first color mold oblique guide grooves are provided at both ends of the first color mold base, extending downward and outward from the top of the first color mold base to the bottom of the first color mold base, the inclination angle of the first color mold oblique guide groove is the same as the inclination angle of the first color mold oblique guide column, the first color mold oblique guide block is arranged in the first color mold oblique guide groove, the first color mold oblique guide block is connected to the upper mold base through the first color mold oblique guide block connecting column, and a first locking mold assembly is provided below the first color mold base; two first color mold devices are provided, and the first color mold core is arranged between the first color mold devices; The second color mold device comprises a second color mold seat, a second color mold oblique guide block, a second color mold limiting block, a second color mold oblique guide column and a second color mold fixed block, the second color mold fixed block is fixedly connected to the upper mold seat, a second color mold oblique guide column is arranged on the second color mold fixed block, the second color mold oblique guide column is inclined from top to outside of the second color mold core, a second color mold oblique through hole corresponding to the second color mold oblique guide column is arranged on the second color mold seat, the second color mold oblique guide column is slidably connected in the second color mold oblique through hole, a second color mold limiting groove is arranged on one side of the second color mold seat, which extends downward and outward from the top end of the second color mold seat to the bottom end of the second color mold seat, and an upper portion of the second color mold limiting groove is arranged on the second color mold seat. A second limiting portion is provided at the end, and a second color mold limiting block is provided in the second color mold limiting groove, the second color mold limiting block is connected to the upper mold base through the second color mold limiting block column, and second color mold oblique guide grooves are provided at both ends of the second color mold base, which extend downward and outward from the top of the second color mold base to the bottom of the second color mold base, and the inclination angle of the second color mold oblique guide groove is the same as the inclination angle of the second color mold oblique guide column. The second color mold oblique guide block is arranged in the second color mold oblique guide groove, and the second color mold oblique guide block is connected to the upper mold base through the second color mold oblique guide block connecting column, and a second locking mold assembly is provided below the second color mold base; two second color mold devices are provided, and the second color mold core is arranged between the second color mold devices.

2. The injection molding device for double-color mold injection molding according to claim 1, characterized in that: The first hot runner device comprises a first manifold plate, a first main nozzle, a first heating assembly, a first hot nozzle and a first hot runner, wherein the first manifold plate is arranged in a first accommodating cavity of the hot runner plate, a first main nozzle is arranged at the top end of the first manifold plate, a first hot nozzle is arranged at the bottom end of the first manifold plate, a first hot runner is arranged in the first manifold plate between the first main nozzle and the first hot nozzle, and the first heating assembly is arranged on the first manifold plate; the first hot nozzle is connected to the first cavity; The first heating assembly includes a first heating tube, a first main nozzle sensor, a first main nozzle heater, a first hot nozzle sensor and a first hot nozzle heater. A first heating pipe groove is provided at the top and bottom ends of the first diverter plate. The first heating pipe groove is arranged along the shape of the first diverter plate. The first heating tube is arranged in the first heating pipe groove. The first main nozzle sensor is connected to the first main nozzle. A first main nozzle heater is provided on the first main nozzle sensor. The first hot nozzle sensor is connected to the first hot nozzle. A first hot nozzle heater is provided on the first hot nozzle sensor.

3. The injection molding device for double-color mold injection molding according to claim 1, characterized in that: The second hot runner device includes a second diverter plate, a second main nozzle, a second diverter channel, a second hot nozzle and a second heating tube. The second diverter plate is arranged in the second accommodating cavity of the hot runner plate. A second main nozzle is provided at one end of the second diverter plate. A second diverter channel is provided in the second diverter plate. The second diverter channel includes a diverter main channel and a hot nozzle channel. The diverter main channel connects the second main nozzle. A hot nozzle channel is provided in the other end of the second diverter plate. The diverter main channel is also connected to the hot nozzle channel. The second hot nozzle is arranged below the other end of the second diverter plate and connects the two ends of the hot nozzle channel. A second heating tube is provided at the top and bottom ends of the second diverter. The second heating tube is arranged along the outer contour of the second diverter plate. A second hot nozzle sensor is provided on the second hot nozzle. A second hot nozzle heater is provided on the second hot nozzle sensor. A heating coil is also provided on the second main nozzle. The second main nozzle sensor is provided on the heating coil. The second hot nozzle is also connected to the second cavity.

4. The injection molding device for double-color mold injection molding according to claim 1, characterized in that: The first mold locking assembly includes a first mold locking connection block and a first mold locking fixed block, the first mold locking fixed block is fixedly connected to the lower mold base, the first mold locking connection block is arranged on the first color mold base, the first mold locking fixed block includes a first mold locking fixed part and a first mold locking limiting part, the first mold locking fixed part is connected to the lower mold base, and the first mold locking limiting part is arranged at the top of the first mold locking fixed part, the first mold locking connection block includes a first mold locking connection fixing part and a first mold locking connection part, the first mold locking connection fixing part is arranged at the bottom end of the first color mold base, the first mold locking connection part is arranged on the first mold locking connection fixing part, and the first mold locking limiting part is pressed and connected to the first mold locking connection part; the top end of the first mold locking limiting part is provided with an arc surface extending outward and downward in an arc shape from the center of the first mold locking limiting part, and the top end of the first mold locking connection part is provided with an arc surface extending outward and downward in an arc shape from the center of the first mold locking connection part.

5. The injection molding device for double-color mold injection molding according to claim 1, characterized in that: A first color mold is provided on the other side of the first color mold seat, the first color mold core lower seat is arranged between the two first color molds, the first color mold core upper seat is arranged above the first color mold and covers and connects the first color mold, and an injection space is formed between the first color mold core upper seat, the first color mold core lower seat and the first color mold.

6. The injection molding device for double-color mold injection molding according to claim 1, characterized in that: The second mold locking assembly includes a second mold locking connection block and a second mold locking fixed block, the second mold locking fixed block is fixedly connected to the lower mold base, the second mold locking connection block is arranged on the second color mold base, the second mold locking fixed block includes a second mold locking fixing part and a second mold locking limiting part, the second mold locking fixing part is connected to the lower mold base, and a second mold locking limiting part is arranged at the top of the second mold locking fixing part, the second mold locking connection block includes a second mold locking connection fixing part and a second mold locking connection part, the second mold locking connection fixing part is arranged at the bottom end of the second color mold base, a second mold locking connection part is arranged on the second mold locking connection fixing part, and the second mold locking limiting part is pressed and connected to the second mold locking connection part; the top end of the second mold locking limiting part is provided with an arc surface extending outward and downward in an arc shape from the center of the second mold locking limiting part, and the top end of the second mold locking connection part is provided with an arc surface extending outward and downward in an arc shape from the center of the second mold locking connection part.

7. The injection molding device for double-color mold injection molding according to claim 1, characterized in that: A second color mold is provided on the other side of the second color mold base, the second color mold core lower seat is arranged between the two second color molds, the second color mold core upper seat is arranged above the second color mold and covers and connects to the second color mold, and an injection space is formed between the second color mold core upper seat and the second color mold core lower seat and the second color mold.

Images