Two-color injection molding apparatus

Abstract

The utility model discloses a kind of two-color injection molding devices, it is related to mould technical field, wherein, the two-color injection molding device includes rotating base and mould, mould includes the front mould and rear mould of being arranged in rotating base upper, front mould has one injection molding end, two injection molding ends, one injection front mould and two injection front mould, rear mould has at least one one injection rear mould and at least one two injection rear mould, one injection rear mould, two injection rear mould can be movably arranged in rotating base;Wherein, the two-color injection molding device has the first injection molding state of forming one injection semi-finished product and the second injection molding state of forming two injection products on one injection semi-finished product;In the first injection molding state, one injection molding end communicates one injection front mould, one injection rear mould;In the second injection molding state, rotating base rotates, and drive rear mould to rotate, two injection molding end communicates two injection front mould and two injection rear mould;At the same time, one injection molding end communicates one injection front mould and one injection rear mould, to form the one injection state semi-product of another product.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a two-color injection molding device. Background Technology

[0002] Two-color injection molding equipment is a molding process that can inject two different materials into the same mold, thereby achieving the molding of parts made of two materials.

[0003] In two-color injection molding, the product requires two injection processes, each using different materials (such as hard rubber and soft rubber). To achieve this, the mold needs to be designed to perform both injections. However, traditional two-color injection molding machines simply switch between two different front molds to achieve the second injection. For products where the soft rubber extends into the rear mold, the rear mold portion also requires secondary molding, typically using a separate set of molds. This not only affects the product's aesthetics and performance but also increases the production cycle and reduces production efficiency. Utility Model Content

[0004] The main purpose of this utility model is to propose a two-color injection molding device, which aims to solve the technical problem that the front and rear molds of the two-color injection molding device need to be injected twice in related technologies.

[0005] To achieve the above objectives, this utility model proposes a two-color injection molding device, which includes: Rotating base; The mold includes a front mold and a rear mold disposed above the rotating base. The front mold has a first injection end, a second injection end, a first injection front mold core, and a second injection front mold core. The rear mold has at least one first injection rear mold core and at least one second injection rear mold core. The first injection rear mold core and the second injection rear mold core are movably disposed on the rotating base. The two-color injection molding device has a first injection molding state for forming a semi-finished product and a second injection molding state for forming a second product on the semi-finished product. In the first injection state, the injection end is connected to the pre-injection mold core and the post-injection mold core; In the second injection state, the rotating base rotates and drives the rear mold to rotate. The two injection ends are connected to the two front mold cores and the two rear mold cores. At the same time, the one injection end is connected to the one front mold core and the one rear mold core, for molding a one-shot semi-finished product of another product. Attached Figure Description

[0006] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0007] Figure 1 A first-view structural schematic diagram of the two-color injection molding device provided by this utility model; Figure 2 A structural schematic diagram of the two-color injection molding device provided by this utility model from a second perspective; Figure 3 A structural schematic diagram of the two-color injection molding device provided by this utility model from a third-view perspective; Figure 4 A schematic diagram of another embodiment of the two-color injection molding device provided by this utility model; Figure 5 for Figure 4 A magnified view of a section at point A in the middle; Figure 6 This is a structural schematic diagram of the two-color injection molding device provided by this utility model from a fourth perspective.

[0008] Explanation of icon numbers: 1000. Two-color injection molding device; 1. Rotating base; 2. Mold; 21. Rear mold; 211. First injection rear mold core 1; 212. First injection rear mold core 2; 213. Second injection rear mold core 1; 214. Second injection rear mold core 2; 22. Lower fixed plate; 31. Drive assembly; 311. Drive component; 312. Gear; 313. Rack; 314. Bearing; 32. Moving assembly; 321. Sliding seat; 322. Sliding plate; 33. Connecting rod.

[0009] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0010] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0011] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0012] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0013] This utility model proposes a two-color injection molding device 1000.

[0014] Please see Figure 1 and Figure 3 In one embodiment of this utility model, the two-color injection molding device 1000 includes a rotating base 1 and a mold 2. The mold 2 includes a front mold and a rear mold 21 disposed above the rotating base 1. The front mold has a first injection end, a second injection end, a first injection front mold core, and a second injection front mold core. The rear mold 21 has at least one first injection rear mold core and at least one second injection rear mold core. Both the first injection rear mold core and the second injection rear mold core are movably disposed on the rotating base 1. The two-color injection molding device 1000 has a first injection state for forming a first injection semi-finished product and a second injection state for forming a second injection product on the first injection semi-finished product. In the first injection state, the first injection end is connected to the first injection front mold core and the first injection rear mold core. In the second injection state, the rotating base 1 rotates and drives the rear mold 21 to rotate. The second injection end is connected to the second injection front mold core and the second injection rear mold core. At the same time, the first injection end is connected to the first injection front mold core and the first injection rear mold core to form a first injection semi-finished product of another product.

[0015] In this embodiment, the two-color injection molding device 1000 can be applied to scenarios such as automotive parts, consumer electronics, and toy manufacturing, and is not limited here. The rotating base 1 supports the entire two-color injection molding device 1000. The rotating base 1 is rotatably connected to the rear mold 21 of the mold 2. The rotating base 1 can be a rotatable machine base, chassis, etc. It is understood that the implementation method of the rotating base 1 driving the rear mold 21 to rotate is not limited here. In one embodiment, a motor passes through the rotating base 1, and the rear mold 21 is connected to the motor's rotating shaft. When the motor starts, it drives the rear mold 21 to rotate. In another embodiment, a hydraulic cylinder is installed in the bottom groove of the rotating base 1. The piston rod of the hydraulic cylinder is connected to the rear mold 21. The piston of the hydraulic cylinder is driven by the pressure change of the hydraulic oil, thereby driving the rear mold 21 to rotate. The mold 2 includes a front mold and a rear mold 21, which together form a cavity. The shape and size of the cavity determine the shape and size of the product. It is understood that the number of first-shot and second-shot rear mold cores of the rear mold 21 is not limited; it can be one or two, depending on specific needs. In the first injection state, the first-shot injection end, the first-shot front mold core, and the first-shot rear mold core of the front mold form a cavity for molding a first-shot semi-finished product. In the second injection state, the second-shot injection end, the second-shot front mold core, and the second-shot rear mold core of the rear mold 21 form a new cavity for molding a second-shot product. Simultaneously, the first-shot injection end connects to the first-shot front mold core and the first-shot rear mold core for molding a first-shot semi-finished product of another product. The first-shot front mold core and the second-shot front mold core are only named in the initial state and do not mean that the first-shot front mold core is only connected to the first-shot injection end. It should be noted that the position of the front mold of the dual-color injection molding device 1000 provided by this utility model does not need to be adjusted; only the position of the rear mold 21 needs to be adjusted to adapt to the first-shot and second-shot injection ends of the front mold in different states. When a product completes its first injection molding and then proceeds to its second injection molding, the next product can be injection molded simultaneously, effectively improving production efficiency.

[0016] The two-color injection molding device 1000 provided by this utility model solves the problems of frequent mold or equipment changes, low production efficiency, and complex operation in traditional two-color injection molding processes by employing a rotating base 1 and a mold 2 with a specific structure. Specifically, the mold 2 of this device includes a front mold and a rear mold 21 disposed above the rotating base 1. The front mold has a first injection end, a second injection end, and two front mold cores. The rear mold 21 has two rear mold cores and is movably disposed on the rotating base 1. In the first injection state, the first injection end connects to the first injection front mold core and the first injection rear mold core, completing the molding of a one-shot semi-finished product. In the second injection state, the rotating base 1 rotates, driving the rear mold 21 to rotate. The second injection end connects to the second injection front mold core and the second injection rear mold core, while the first injection end continues to connect to the first injection front mold core and the first injection rear mold core to mold another finished product in the one-shot state semi-finished product. This structure allows the injection molding device to achieve continuous molding of one-shot and two-shot injections on the same equipment, without the need for frequent mold changes or equipment adjustments, greatly improving production efficiency. Simultaneously, while completing the first injection molding of one product and then the second injection molding, the first injection molding of the next product can be carried out at the same time, which simplifies the operation process, reduces production costs, and ensures the molding quality of the products.

[0017] In one embodiment of the present invention, the two-color injection molding device 1000 further includes a lower fixed plate 22, a driving component 31, and a moving component 32. The lower fixed plate 22 is rotatably disposed on the rotating base 1. The driving component 31 is connected to the moving component 32 and is disposed on the lower fixed plate 22. The moving component 32 is movably disposed on the lower fixed plate 22. The rear mold 21 is located above the moving component 32. The driving component 31 is configured to drive the moving component 32 to move in the second injection state, thereby driving each first injection rear mold core and each second injection rear mold core to move, so that the two injection ends are connected to the two injection front mold cores and the two injection rear mold cores.

[0018] In this embodiment, combined with Figure 2 and Figure 4To improve the flexibility of mold 2, the drive assembly 31 and the moving assembly 32 work together to enable the rear mold 21 to rotate. The two cavities of the rear mold 21 then engage with the first injection end and the first injection front mold core, and the second injection end and the second injection front mold core of the front mold, respectively. The drive assembly 31 provides power for the movement of the moving assembly 32, which in turn moves the cavities of the rear mold 21. It is understood that the moving assembly 32 can be mounted on the lower fixed plate 22 via bolts, snap-fit ​​connections, welding, etc. The lower fixed plate 22 rotates with the rotating base 1, and the two cavities of the rear mold 21 share the same lower fixed plate 22. The type of drive assembly 31 includes, but is not limited to, gear 312 transmission, belt transmission, and lead screw transmission, etc., and is not limited here. In one embodiment, a stepper motor or servo motor is fixed on a rotating base 1, and the motor shaft is connected to a transmission device (such as a gear 312 or a lead screw) via a coupling. When using gear 312 transmission, the motor shaft is connected to a driving gear 312, which meshes with a driven gear 312, which is connected to the moving component 32. When using lead screw transmission, the motor shaft is directly connected to the lead screw, which engages with a nut on the moving component 32, and the rotation of the motor drives the moving component 32 to move along the lead screw. In another embodiment, a hydraulic cylinder or pneumatic cylinder, etc., is used, with its piston rod connected to the moving component 32 via a connector, thereby realizing the movement of the moving component 32. The type of moving component 32 includes, but is not limited to, slide rail type, linear guide type, hydraulic cylinder type, etc., and is not limited here. In one embodiment, a slide rail and slider are used. The slide rail can be a linear guide rail or a hydraulic guide rail, and is mounted on the rotating base 1 by means of bolts or other methods. The slider moves on the guide rail by rolling elements (such as balls or rollers). The rear mold 21 is mounted on the slider by means of bolts, screws, or other methods. In another embodiment, a hydraulic slide rail and a hydraulic slider are used. The hydraulic slide rail is fixed to the rotating base 1 by means of bolts, snap-fits, or other methods. The rear mold 21 is mounted on the hydraulic slider by means of bolts, screws, or other methods. The hydraulic slider moves on the slide rail by the pressure of hydraulic oil, ensuring that the movement direction of the rear mold 21 is accurate and stable. It should be noted that the first and second injection ends of the front mold can correspond to the same rear mold 21. Specifically, in the first injection state, the first injection end and the first front mold core correspond to the cavity of the first rear mold core of the rear mold 21, forming a first-shot semi-finished product. In the second injection state, driven by the drive assembly 31 and the moving assembly 32, the second rear mold core of the rear mold 21 is pushed to correspond to the second injection end and the second front mold core, thus forming a second-shot product based on the first-shot semi-finished product. Alternatively, they can correspond to two sets of first-shot rear mold cores and two sets of second-shot rear mold cores of the rear mold 21, as described in subsequent embodiments; no limitation is made here.

[0019] In one embodiment of the present invention, the moving component 32 includes a sliding seat 321 and a sliding plate 322 disposed on the lower fixed plate 22. Each sliding plate 322 is slidably connected to a sliding seat 321. Each post-injection mold core and each second post-injection mold core are located above the sliding plate 322. The sliding seat is connected to the driving end of the driving component 31.

[0020] In this embodiment, combined with Figure 2 To improve production efficiency, the sliding seat 321 and the sliding plate 322 achieve relative movement through a sliding fit. The sliding seat 321 is fixed on the rotating base 1, and the sliding plate 322 can slide along a predetermined trajectory on the sliding seat 321. That is, the sliding plate 322 slides on the guide rail of the sliding seat 321, thereby realizing the movement of the sliding plate 322.

[0021] In one embodiment of the present invention, the drive assembly 31 includes a drive member 311, a gear 312 and a rack 313. The rack 313 is disposed on the moving assembly 32, and the gear 312 is sleeved on the drive end of the drive member 311. The rack 313 and the gear 312 are meshed and connected.

[0022] In this embodiment, combined with Figure 4 To achieve precise motion control, the meshing connection between gear 312 and rack 313 enables high-precision linear motion control. The drive component 311 can be a motor, cylinder, or similar device, but is preferably an electric motor. It is understood that, combined with... Figure 4 The rack 313 is disposed on the bottom side of the slide plate 322 of the moving assembly 32, so that the gear 312 rotates as driven by the drive member 311, and the slide plate 322 moves along the sliding seat 321 through the meshing of the gear 312 and the rack 313.

[0023] In one embodiment of the present invention, the drive assembly 31 further includes a bearing 314, which is sleeved on the drive end of the drive member 311 and located between the drive member 311 and the gear 312.

[0024] In this embodiment, combined with Figure 4 To improve transmission efficiency and precision, the addition of bearing 314 significantly reduces friction between the drive end of drive component 311 and gear 312, resulting in smoother and more efficient power transmission. The type of bearing 314 includes, but is not limited to, deep groove ball bearings 314, angular contact ball bearings 314, and tapered roller bearings 314, etc., and is not limited here. It is understood that the drive end of drive component 311 is fitted with bearing 314, and bearing 314 also houses bearing gear 312. The shaft of bearing gear 314 is fitted with gear 312. Through the intermediate transmission of bearing gear 314, the rotation of gear 312 can be controlled more precisely, reducing errors that may be caused by direct connection, and further enhancing the stability and precision of the transmission.

[0025] In one embodiment of this utility model, the rear mold 21 has two first-shot rear mold cores and two second-shot rear mold cores, each of which is located above the moving component 32. The moving component 32 is connected to the driving component 31. In the second injection molding state, the rotating base 1 rotates and drives the two rear molds 21 to rotate. Under the drive of the driving component 31, the moving component 32 drives one of the rear mold cores of one of the rear molds 21 to connect with a first-shot front mold core and a first-shot injection end, and drives the other rear mold core of the other rear mold 21 to connect with a second-shot front mold core and a second-shot injection end.

[0026] In this embodiment, combined with Figure 1 and Figure 2 To achieve efficient production, mold 2 can perform both first and second injection operations simultaneously within a single injection cycle, significantly shortening production time. The two cavities of the rear mold 21 are located above the two moving components 32 and are symmetrically arranged. Each first-injection rear mold core corresponds to one cavity with a first-injection front mold core, and each second-injection rear mold core corresponds to one cavity with a second-injection front mold core. It can be understood that one of the front mold cores and one of the rear mold cores are spaced apart from the other two front mold cores and the other two rear mold cores, and are symmetrically arranged. They are connected by connecting components such as the first connecting rod 33, thereby achieving synchronous movement of the two rear molds 21. Through the movement of the moving components 32, the front mold cores can be aligned with the rear mold cores of the rear mold 21 in both the first-injection and second-injection states. That is, in the first-injection state, the first-injection injection end connects to the first-injection front mold core and the first-injection rear mold core; in the second-injection state, the second-injection injection end connects to the second-injection front mold core and the second-injection rear mold core. Combined with... Figure 1 It is understood that the two first-shot and two second-shot mold cores of the rear mold 21 are arranged side by side on the lower fixed plate 22, sharing the same lower fixed plate 22. The lower fixed plate 22 is mounted on the rotating base 1 by bolts, snap-fits, or other means. The implementation of the drive assembly 31 and the moving assembly 32 is as follows: In one embodiment, the drive assembly 31 is connected to two driven gears 312 via a central gear 312. The two driven gears 312 are respectively mounted on the drive shafts of the two moving assemblies 32, thereby enabling the drive assembly 31 to synchronously drive the two moving assemblies 32. The central gear 312 is driven to rotate by a motor, and the central gear 312 meshes with the two driven gears 312 to rotate synchronously, thereby driving the two moving assemblies 32 to move synchronously. In another embodiment, the drive assembly 31 is connected to two pulleys via a belt, and the two pulleys are respectively mounted on the drive shafts of the two moving assemblies 32. The motor drives the pulley to rotate, and the belt moves under the drive of the pulley, thereby driving the two pulleys to rotate synchronously, realizing the synchronous movement of the two moving components 32.

[0027] In one embodiment of this utility model, the rear mold 21 has a first injection rear mold core 211, a second injection rear mold core 213, a second injection rear mold core 212, and a second injection rear mold core 214; in the first injection state, the first injection end is connected to the first injection front mold core and the second injection rear mold core 212, and the second injection end is connected to the second injection front mold core and the second injection rear mold core 214; in the second injection state, the rotating base 1 rotates and drives the two rear molds 21 to rotate, and the moving component 32, driven by the driving component 31, drives the second injection rear mold core 213 to connect with the second injection front mold core and the second injection end; and drives the second injection rear mold core 212 to connect with the first injection front mold core and the first injection end.

[0028] In this embodiment, combined with Figure 6 It should be noted that the front mold core corresponding to the first injection end of mold 2 is called the first-injection front mold core, and the front mold core corresponding to the second injection end of mold 2 is called the second-injection front mold core. Here, the number of front molds can be one, with each front mold corresponding to one front mold core, and the two injection ends of the front molds being the first-injection end and the second-injection end, respectively. Alternatively, one front mold can include two front mold cores, with two injection ends set on the same upper fixing plate, one for first-injection and one for second-injection. In the first injection state, the first injection rear mold core 211 is connected to the first injection front mold core and the first injection end, and the second injection rear mold core 213 is correspondingly set to the second injection front mold core and the second injection end. In the second injection state, the rear mold 21 rotates 180 degrees. At this time, the first injection end and the first injection front mold core are set to correspond to the second injection rear mold core 214, and the second injection end and the second injection front mold core are set to correspond to the first injection rear mold core 211. At this time, the front mold and rear mold 21 of the first injection cannot correspond, and the front mold and rear mold 21 of the second injection cannot correspond. Through the drive component 31 and the moving component 32, the front mold and rear mold 21 of the first injection are made to correspond, and the front mold and rear mold 21 of the second injection are made to correspond, that is, the second injection rear mold core 213 is connected to the second injection front mold core and the second injection end; and the first injection rear mold core 212 is driven to connect to the first injection front mold core and the first injection end.

[0029] In one embodiment of the present invention, the two-color injection molding device 1000 further includes a connecting rod 33, which is located between each of the first and second post-injection mold cores and is connected to two moving components 32 respectively. Each of the first and second post-injection mold cores is located above the moving components 32.

[0030] In this embodiment, combined with Figure 2 To ensure synchronized movement of the two moving components 32, a connecting rod 33 is located between the first and second injection mold cores, and is connected to each of the two moving components 32. The function of the connecting rod 33 is to evenly transmit the power from the drive component 31 to the two moving components 32, ensuring synchronized movement. The drive component 31 transmits power to the two moving components 32 via the connecting rod 33, enabling the two moving components 32 to move simultaneously. Figure 1 and Figure 2 It should be noted that the connecting rod 33 is connected to the sliding plate 322 of the moving assembly 32, and the connection method includes, but is not limited to, bolt connection, snap-fit ​​connection, etc. Each mold 2 has one post-shot mold core and two post-shot mold cores corresponding to one moving assembly 32. Driven by the drive assembly 31, the connecting rod 33 moves left and right, thereby causing each post-shot mold core and each post-shot mold core of the rear mold 21 of each mold 2 to move left and right with the corresponding sliding plate 322 in the moving assembly 32. It can be understood that the number of connecting rods 33 includes, but is not limited to, one or two.

[0031] In one embodiment of the present invention, the drive assembly 31 includes a drive member 311, a gear 312 and a rack 313. The rack 313 is disposed on the bottom side of the connecting rod 33 and meshes with the gear 312. The gear 312 is sleeved on the drive end of the drive member 311. Each moving component 32 includes two sliding seats 321 and two sliding plates 322 disposed on the lower fixed plate 22. Each sliding plate 322 is slidably connected to a sliding seat 321. Each post-injection mold core and each of the two post-injection mold cores are respectively located above a sliding plate 322. The two ends of the connecting rod 33 are respectively connected to a sliding plate 322.

[0032] In this embodiment, combined with Figure 2 and Figure 5 To achieve synchronized movement, the drive component 311 transmits power to the gear 312. A rack 313 is mounted on the bottom side of the connecting rod 33 and meshes with the gear 312, allowing the connecting rod 33 to move left and right under the drive of the drive component 311. The connecting rod 33 is connected to the sliding plate 322 of the moving assembly 32 via bolts or other means, enabling the sliding plate 322 to move along the sliding seat 321. It can be understood that the sliding plate 322 moves a distance of 100m relative to the sliding seat 321. Combined with... Figure 1 It should be noted that, in order to further achieve synchronous movement, the two-color injection molding device 1000 includes two connecting rods 33. The two ends of one connecting rod 33 are respectively connected to the top surfaces of the two sliding plates 322, and the two ends of the other connecting rod 33 are connected to the sides of the two sliding plates 322. A rack 313 is provided on the bottom side of the connecting rod 33 connected to the side of the sliding plate 322 so that it can mesh with the gear 312.

[0033] It should be noted that the process of the two-color injection molding device 1000 provided by this utility model is as follows: First, in the initial mold-closing state, the first-shot rear mold 21 is in the correct position corresponding to the first-shot front mold, and the second-shot mold is in the correct position corresponding to the second-shot front mold, ready for one-shot molding. Second, after the first-shot molding is completed, the rear mold 21 performs the mold-opening action, the action of which will not be described in detail here. Next, the rotating base 1, driven by the relevant structure, drives the rear mold 21 in the two-color injection molding device 1000 to rotate 180 degrees. At this time, the position of the first-shot rear mold 21 of the mold 2 is misaligned with the first-shot front mold, and the position of the second-shot rear mold 21 is misaligned with the second-shot front mold. The positions of the first-shot / second-shot rear molds 21 need to be changed. Next, the drive unit 311 begins operation. Gear 312 meshes with rack 313 under drive. At this time, connecting rod 33, driven by gear 312, moves sliding plate 322 100mm to the left along sliding seat 321, ensuring that the first-shot rear mold 21 is correctly positioned to mate with the first-shot front mold, and the second-shot rear mold 21 is also correctly positioned to mate with the second-shot front mold. Then, the mold closes, preparing for injection molding. The first and second shots are molded simultaneously. Here, the first shot is the injection molding process for the next product, and the second shot is the injection molding process for the previous product. Finally, the above actions are repeated to produce other products.

[0034] In one embodiment of the present invention, the two-color injection molding device 1000 further includes an upper fixing plate and a lower fixing plate 22. The upper fixing plate is located above the front mold, and the first injection end and the second injection end are respectively inserted through the upper fixing plate. Each first injection mold core and each second injection mold core share the same lower fixing plate 22.

[0035] In this embodiment, combined with Figure 2 It should be noted that the two injection ends of the front mold share the same upper fixing plate, which not only reduces the overall volume of mold 2 and lowers its manufacturing cost, but also, since the two sets of rear mold cores share the same lower fixing plate 22, mold changes only require adjustment of the upper fixing plate and the front mold, reducing mold change time and operational complexity, and further improving production efficiency. The lower fixing plate 22 has an arc-shaped groove on the side facing the drive mechanism, and the drive end of the drive component 311 of the drive mechanism is confined within the arc-shaped groove. Combined with... Figure 2 To achieve precise positioning of the mold 2, an arc-shaped groove is formed on the side of the lower fixed plate 22 facing the drive mechanism, and the drive end of the drive mechanism is confined within the arc-shaped groove. Through the limiting effect of the arc-shaped groove, the movement trajectory of the drive end is more stable, reducing the direct friction between the drive component 311 and the mold 2, thereby extending the service life of the mechanical parts.

[0036] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A two-color injection molding device, characterized in that, The two-color injection molding device includes: Rotating base; The mold includes a front mold and a rear mold disposed above the rotating base. The front mold has a first injection end, a second injection end, a first injection front mold core, and a second injection front mold core. The rear mold has at least one first injection rear mold core and at least one second injection rear mold core. The first injection rear mold core and the second injection rear mold core are movably disposed on the rotating base. The two-color injection molding device has a first injection molding state for forming a semi-finished product and a second injection molding state for forming a second product on the semi-finished product. In the first injection state, the injection end is connected to the pre-injection mold core and the post-injection mold core; In the second injection state, the rotating base rotates and drives the rear mold to rotate. The two injection ends are connected to the two front mold cores and the two rear mold cores. At the same time, the one injection end is connected to the one front mold core and the one rear mold core, for molding a one-shot semi-finished product of another product.

2. The two-color injection molding apparatus as described in claim 1, characterized in that, The two-color injection molding device further includes a lower fixed plate, a drive assembly, and a moving assembly. The lower fixed plate is rotatably mounted on the rotating base. The drive assembly is connected to the moving assembly and is mounted on the lower fixed plate. The moving assembly is movably mounted on the lower fixed plate. The rear mold is located above the moving assembly. The drive assembly is configured to drive the moving assembly to move in the second injection state, thereby moving each of the first-shot rear mold cores and each of the second-shot rear mold cores, so that the second-shot injection end is connected to the second-shot front mold core and the second-shot rear mold core.

3. The two-color injection molding apparatus as described in claim 2, characterized in that, The moving component includes a sliding seat and a sliding plate disposed on the lower fixed plate. Each sliding plate is slidably connected to a sliding seat. Each first injection mold core and each second injection mold core are located above the sliding plate. The sliding seat is connected to the driving end of the driving component.

4. The two-color injection molding apparatus as described in claim 2, characterized in that, The drive assembly includes a drive element, a gear, and a rack. The rack is disposed on the moving assembly, the gear is sleeved on the drive end of the drive element, and the rack is meshed with the gear.

5. The two-color injection molding apparatus as described in claim 4, characterized in that, The drive assembly further includes a bearing, which is sleeved on the drive end of the drive member and located between the drive member and the gear.

6. The two-color injection molding apparatus as described in any one of claims 1 to 5, characterized in that, The rear mold has two first-shot rear mold cores and two second-shot rear mold cores, each of which is located above the moving assembly. The moving assembly is connected to the driving assembly. In the second injection molding state, the rotating base rotates and drives the rear mold to rotate. Under the drive of the driving assembly, the moving assembly drives one of the first-shot rear mold cores of the rear mold to connect with the first-shot front mold core and the first-shot injection end, and drives the other of the second-shot rear mold cores of the rear mold to connect with the second-shot front mold core and the second-shot injection end.

7. The two-color injection molding apparatus as described in claim 6, characterized in that, The rear mold has a first injection mold core, a second injection mold core, a second injection mold core, and a second injection mold core. In the first injection state, the first injection end is connected to the first injection mold core and the second injection mold core, and the second injection end is connected to the second injection mold core and the second injection mold core. In the second injection state, the rotating base rotates and drives the two rear molds to rotate. The moving component, driven by the driving component, drives the second injection mold core to connect with the second injection mold core and the second injection end; and drives the second injection mold core to connect with the first injection mold core and the first injection end.

8. The two-color injection molding apparatus as described in claim 6, characterized in that, The two-color injection molding device also includes a connecting rod, which is located between each of the first and second injection mold cores and is connected to the two moving components respectively. Each of the first and second injection mold cores is located above the moving components.

9. The two-color injection molding apparatus as described in claim 7, characterized in that, The drive assembly includes a drive element, a gear, and a rack. The rack is located on the bottom side of the connecting rod and meshes with the gear. The gear is sleeved on the drive end of the drive element. Each of the moving components includes two sliding seats and two sliding plates disposed on the lower fixed plate. Each sliding plate is slidably connected to one of the sliding seats. Each of the first and second post-injection mold cores is located above one of the sliding plates. The two ends of the connecting rod are respectively connected to one of the sliding plates.

10. The two-color injection molding apparatus according to any one of claims 1 to 5, characterized in that, The dual-color injection molding device further includes an upper fixed plate and a lower fixed plate. The upper fixed plate is located above the front mold. The first injection end and the second injection end are respectively inserted through the upper fixed plate. Each first injection mold core and each second injection mold core share the same lower fixed plate.

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