Double-color injection mold for USB charging switch shell

Abstract

The utility model relates to a double-color injection mold for a USB charging switch shell. The double-color injection mold comprises a turntable mechanism, a first mold assembly and a second mold assembly, the rotating disc mechanism provides a rotating station, the first mold assembly is provided with a first upper mold and a first lower mold which are provided with first-color glue injection openings, and the second mold assembly comprises a second upper mold and a second lower mold which are provided with second-color glue injection openings. The two lower dies have the same structure, are provided with male dies and vertical inserts, and can be driven by the turntable mechanism to exchange positions. A female die A of the first upper die is composed of a fixed die A and a movable die A, the movable die A is driven by a slide mechanism A, the movable die A moves inwards during die assembly, and a side loose core abuts against the fixed die A to form a lug forming cavity and forms a main shell forming cavity with a male die; and outward retreating and demolding are performed during mold opening. And a female die B of the second upper die comprises a fixed die B and a movable die B, the movable die B is driven by a slide mechanism B and moves inwards during die assembly, the convex core abuts against the fixed die A, the convex core and the convex die with the main shell form a shell cover forming cavity, and when the die is opened, the convex core retreats outwards to complete shell cover demolding. And step surface contact during injection molding of the main shell and the shell cover is realized, and heat concentration is avoided.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a two-color injection mold for a USB charging switch housing. Background Technology

[0002] With the widespread use of electronic products, USB charging switches, as commonly used power transmission and control components, are facing increasingly higher market demands for their appearance quality and functionality. Two-color injection molding, due to its ability to create diverse color combinations and a sense of depth, is widely used in the manufacture of USB charging switch housings. These housings typically consist of a main housing and a cover at its front, molded using two-color injection molding. However, existing two-color injection molding technology for USB charging switch housings has significant drawbacks. Specifically, the joint between the cover and the main housing is a simple planar contact, with the edges pressed together. Due to the high temperature and pressure environment during injection molding, the contact area between the main housing and the cover is highly susceptible to localized overheating, leading to material melting and deformation, resulting in defects such as flash and weld lines. Furthermore, the small contact area between the cover and the main housing at only the edge plane causes heat to concentrate and dissipate rapidly, making them prone to overheating.

[0003] To address the aforementioned issues, a USB charging switch housing with stepped surface contact was proposed. The main shell 100 consists of an upper shell plate 101 and two side shell plates 102. Its lower end and front and rear ends are open. The upper shell plate 101 has multiple first through holes 103. The outer surfaces of the front ends of the two side shell plates 102 have protruding lugs 104. The lugs 104 have second through holes 105. The first through holes 103 extend vertically, and the second through holes 105 extend horizontally. The upper shell plate 101 has a recess 106 at its front end. The shell cover 200 has a front cover plate 201 and an upper cover plate 202 extending from the front cover plate 201 to the recess 106. The two sides of the front cover plate 201 are connected to the two side shell plates 102. The upper cover plate 202 is located inside the recess 106 and is connected to the side wall of the recess 106. The front end of the front cover plate 201 is provided with a protrusion 203 with an insertion slot 2031. The core improvement of this invention lies in designing the joint between the cover 200 and the main shell 100 as a stepped structure: the front end of the upper shell plate 101 has a layered design of a lower plate A107 and an upper plate A108, wherein the lower plate A107 protrudes relative to the upper plate A108 to form a stepped structure; the rear end of the upper cover plate 202 has a layered design of a lower plate B204 and an upper plate B205, wherein the lower plate B204 is recessed relative to the upper plate B205 to form a shoulder-step structure. When the cover 200 is joined to the main shell 100, the upper plate B205 is located on the lower plate A107, wherein the outer edge of the upper plate B205 abuts against the upper plate A108 and the upper surfaces of both are flush, and the outer edge of the lower plate B204 abuts against the lower plate A107 and the lower surfaces of both are flush. This stepped contact structure enhances product performance in two ways: First, compared to traditional planar contact, the stepped structure significantly increases the surface area of ​​the contact interface, thereby preventing excessive heat concentration in the contact area and reducing the risk of thermal deformation of the first-color main shell 100. Second, the lower plate B204 of the cover 200 has a concave design, reducing the amount of second-color material used and shrinking the volume of molten material during injection molding, thus reducing heat accumulation when in contact with the first-color main shell 100 and suppressing material melting caused by high temperature in the contact area from the source. Based on the above innovative structure, this application further proposes a two-color injection mold adapted to this new USB charging switch shell to achieve efficient and high-quality product manufacturing. Utility Model Content

[0004] The purpose of this utility model is to provide a two-color injection mold for USB charging switch housings, which can effectively solve the problems of poor product appearance quality, low structural precision, and low production efficiency in the existing two-color injection molding of USB charging switch housings.

[0005] The technical solution of this utility model: A two-color injection mold for a USB charging switch housing, comprising a turntable mechanism, a first mold assembly, and a second mold assembly, wherein:

[0006] The rotary table mechanism is used to provide a rotating workstation;

[0007] The first mold assembly includes a first upper mold and a first lower mold, wherein the first upper mold is provided with a first color injection port;

[0008] The second mold assembly includes a second upper mold and a second lower mold, wherein the second upper mold is provided with a second color injection port;

[0009] The first lower mold and the second lower mold are fixed to the turntable mechanism and rotate synchronously with it, so that the positions of the first lower mold and the second lower mold can be interchanged. Both lower molds are equipped with product ejection mechanisms, and the two upper molds are synchronously opened and closed. The first lower mold and the second lower mold have the same structure and are both provided with a punch. The punch is provided with a vertical insert for forming the first through hole of the main shell part.

[0010] The first upper mold is provided with a concave mold A, which includes a fixed mold A and a movable mold A. The movable mold A is driven to slide horizontally by a sliding mechanism A. One end of the inner top wall of the fixed mold A is provided with a shaping protrusion for forming the notch of the main shell part. One end of the shaping protrusion is provided with a lower shaping layer for forming the lower plate A of the main shell part and an upper shaping layer for forming the upper plate A of the main shell part. The upper shaping layer protrudes relative to the lower shaping layer to form a shoulder step structure. Side core heads are provided on both sides of the movable mold A. The end face of the side core head has a side core pull for forming the second through hole of the main shell part. When the first mold assembly is closed, the movable mold A moves inward and closes to the fixed mold A, so that the side core pull abuts against the end face of the fixed mold A, and the side core head cooperates with the end face of the fixed mold A to form a lug forming cavity. At this time, the punch and the concave mold A cooperate to form the main shell part forming cavity. When the mold is opened, the movable mold A moves outward and away from the fixed mold A, so as to drive the side core pull to detach from the main shell part after forming.

[0011] The second upper mold is provided with a concave mold B, which includes a fixed mold B and a movable mold B. The movable mold B is driven to slide horizontally by a sliding mechanism B. The movable mold B is provided with an inner cavity and a protrusion located in the cavity. The protrusion is used to form the shell cover insertion. The protrusion and the inner wall of the inner cavity cooperate to form a protruding head forming cavity. When the second mold assembly is closed, the movable mold B moves inward and closes to the fixed mold B. At this time, the protrusion and the concave mold B with the formed main shell part cooperate to form the shell cover forming cavity. When the mold is opened, the movable mold B moves outward and away from the fixed mold B, so as to drive the protrusion and the inner cavity to detach from the formed shell cover.

[0012] By adopting the above technical solution, this utility model achieves stepped surface contact between the main shell and the shell cover through innovative design of the mold structure, as detailed below:

[0013] In the structural design of the first mold assembly, the first upper mold cavity A includes a fixed mold A and a movable mold A. The molding protrusion at one end of the inner top wall of the fixed mold A is a key structure for forming stepped surface contact. During injection molding, the first lower mold punch and cavity A cooperate to form the main shell molding cavity. When the first mold assembly closes, plastic is injected into the molding cavity through the first color injection port. Under high temperature and pressure, the plastic fills the entire main shell molding cavity. After cooling and solidification, the main shell is formed. Specifically, the lower molding layer on the molding protrusion forms the lower plate A of the main shell, and the upper molding layer forms the upper plate A of the main shell. The upper molding layer protrudes outward relative to the lower molding layer, thus forming a stepped structure at the corresponding part of the main shell. This stepped structure on the main shell causes the corresponding part of the subsequently injection-molded shell cover to form a shoulder-step structure, changing the contact method between the main shell and the shell cover from traditional planar contact to stepped surface contact. The stepped structure allows for a more even distribution of pressure and heat during injection molding, avoiding localized concentrations and effectively reducing appearance defects such as flash and weld lines, thus improving the product's appearance quality and structural strength.

[0014] A further feature of this invention is that the sliding mechanism A includes a sliding block A and an actuator A. The sliding block A is connected to the movable mold A. The actuator A and the sliding block A are vertically inserted and form an inclined abutment fit. When the mold is opened and closed, the actuator A moves vertically relative to the sliding block A, driving the sliding block A to slide horizontally on the first upper mold, thereby driving the movable mold A to move inward or outward.

[0015] The sliding mechanism B includes a sliding block B and an actuator B. The sliding block B is connected to the movable mold B. The actuator B and the sliding block B are vertically inserted and form an inclined abutment fit. When the mold is opened and closed, the actuator B moves vertically relative to the sliding block B, driving the sliding block B to slide horizontally on the first upper mold, thereby driving the movable mold B to move inward or outward.

[0016] With the above-mentioned further configuration, the sliding mechanism A and the sliding mechanism B can automatically slide the movable mold A and the movable mold B during the mold opening and closing process by cooperating with the inclined surface of the sliding block through the actuator. No additional driving device is required, which simplifies the mold structure and improves the automation and reliability of the mold.

[0017] A further feature of this invention is as follows: the first upper mold of the first mold assembly includes a withdrawal plate A and a core plate A located below it. The concave mold A is disposed at the bottom of the core plate A. The actuator A is directly or indirectly connected to the withdrawal plate A. The withdrawal plate A can perform opening and closing actions relative to the core plate A. When the first mold assembly opens, the withdrawal plate A in the first upper mold moves upward before the core plate A, and drives the actuator A upward, thereby driving the sliding block A to move the movable mold A outward. When the mold closes, the withdrawal plate A can move downward relative to the core plate A, and drives the actuator A downward, thereby driving the sliding block A to move the movable mold A inward.

[0018] The second upper mold of the second mold assembly includes a withdrawal plate B and a core plate B located below it. The cavity mold B is disposed at the bottom of the core plate B. The actuator B is directly or indirectly connected to the withdrawal plate B. The withdrawal plate B can perform opening and closing actions relative to the core plate B. When the second mold assembly opens, the withdrawal plate B in the second upper mold moves upward before the core plate B, and drives the actuator B upward, thereby driving the slide block B to move the movable mold B outward. When the mold closes, the withdrawal plate B can move downward relative to the core plate B, and drives the actuator B downward, thereby driving the slide block B to move the movable mold B inward.

[0019] By adopting the above-mentioned further settings, it is ensured that during the mold opening process, movable mold A and movable mold B can exit from cavity mold A and cavity mold B first, avoiding mold jamming or damage.

[0020] A further feature of this invention is that the positioning mechanism A includes a driving component fixed to the side of the ejector template A and a guide component fixed to the side of the core template A. The transmission head at the lower end of the driving component is horizontally inserted into the actuator A and forms a vertical positioning, and the actuator A and the guide component form a vertical sliding fit.

[0021] The actuator B of the sliding mechanism B is directly connected to the retraction template B. The sliding block B has an oblique guide cavity, and the lower end of the actuator B has an oblique guide head inserted into the oblique guide cavity.

[0022] With the above-described further configuration, in the sliding mechanism A, the driving component provides the necessary power to the sliding mechanism, while the guide component ensures the accuracy of the actuator A during its up-and-down sliding, avoiding offset or jamming. The horizontal insertion design of the transmission head and the actuator A not only simplifies the structure but also enhances the durability of the mold.

[0023] For the sliding mechanism B, the actuator B is directly connected to the ejector platen B, ensuring the synchronicity and consistency of the movements. The cooperation between the inclined guide cavity and the inclined guide head allows the movable mold B to move smoothly and accurately, further improving the molding quality of the product and the service life of the mold.

[0024] A further feature of this invention is that the first mold assembly has two sets of main shell forming cavities, and the second mold assembly has two sets of shell cover forming cavities.

[0025] With the above-mentioned further configuration, both the first mold assembly and the second mold assembly are provided with two sets of product forming cavities, which can form multiple products at the same time, greatly improving production efficiency. Attached Figure Description

[0026] Figure 1 This is a structural diagram of the USB charging switch housing in the background art of this utility model;

[0027] Figure 2 for Figure 1 Product bottom view;

[0028] Figure 3 for Figure 1 Structural diagram of the main shell component;

[0029] Figure 4 for Figure 1 Structural diagram of the middle shell cover;

[0030] Figure 5 This is a structural diagram of a two-color injection mold according to a specific embodiment of the present utility model;

[0031] Figure 6 This is a structural diagram of the first lower mold in a specific embodiment of the present utility model;

[0032] Figure 7 This is a structural diagram of the punch on the first lower die in a specific embodiment of this utility model;

[0033] Figure 8 This is a structural diagram of the first upper mold in a specific embodiment of the present utility model;

[0034] Figure 9 This is a structural diagram of the concave mold A in a specific embodiment of this utility model;

[0035] Figure 10 for Figure 9 A magnified view of part I in the middle;

[0036] Figure 11 This is a structural diagram of the positioning mechanism A in a specific embodiment of this utility model;

[0037] Figure 12 This is an exploded view of the positioning mechanism A in a specific embodiment of this utility model;

[0038] Figure 13 This is a structural diagram of the second lower mold in a specific embodiment of the present invention;

[0039] Figure 14 This is a structural diagram of the second upper mold in a specific embodiment of the present invention;

[0040] Figure 15 This is a structural diagram of the concave mold B in a specific embodiment of this utility model;

[0041] Figure 16 for Figure 15 A magnified view of a section II;

[0042] Figure 17 This is a structural diagram of the positioning mechanism B in a specific embodiment of this utility model;

[0043] Figure 18 This is an exploded view of the positioning mechanism B in a specific embodiment of this utility model. Detailed Implementation

[0044] The technical solutions in this embodiment will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0045] like Figure 1-18 As shown, this utility model discloses a two-color injection mold for a USB charging switch housing, comprising a turntable mechanism 1, a first mold assembly 2, and a second mold assembly 3, wherein:

[0046] The turntable mechanism 1 is used to provide a rotary workstation and has a rotatable turntable;

[0047] The first mold assembly 2 includes a first upper mold 21 and a first lower mold 22, wherein the first upper mold 21 is provided with a first color injection port;

[0048] The second mold assembly 3 includes a second upper mold 31 and a second lower mold 32, wherein the second upper mold 31 is provided with a second color injection port;

[0049] The first lower mold 22 and the second lower mold 32 are fixed to the turntable mechanism 1 and rotate synchronously with it, which can realize the 180° position interchange between the first lower mold 22 and the second lower mold 32. Both lower molds are equipped with product ejection mechanisms to eject the product from the existing ejection mechanism or to remove it manually. The two upper molds have synchronous opening and closing actions. The first lower mold 22 and the second lower mold 32 have the same structure and are both provided with a punch 4. The punch 4 is provided with a vertical insert 5 for forming the first through hole of the main shell part.

[0050] The first upper mold 21 is provided with a concave mold A6, which includes a fixed mold A61 and a movable mold A62. The movable mold A62 is driven to slide horizontally by a sliding mechanism A7. One end of the inner top wall of the fixed mold A61 is provided with a shaping protrusion 611 for forming the notch of the main shell part. The inner end of the shaping protrusion 611 is provided with a lower shaping layer 612 for forming the lower plate A of the main shell part and an upper shaping layer 613 for forming the upper plate A of the main shell part. The upper shaping layer 613 protrudes relative to the lower shaping layer 612 to form a shoulder step structure. The movable mold A62 is provided with... A side core head 621 is provided, and a side core puller 622 for forming the second through hole of the main shell is provided on the end face of the side core head 621. When the first mold assembly 2 is closed, the movable mold A62 moves inward and closes to the fixed mold A61, so that the side core puller 622 abuts against the end face of the fixed mold A61, and the side core head 621 and the end face of the fixed mold A61 cooperate to form a lug forming cavity 60. At this time, the punch 4 and the die A6 cooperate to form the main shell forming cavity. When the mold is opened, the movable mold A62 moves outward away from the fixed mold A61, so as to drive the side core puller 622 to detach from the main shell after forming.

[0051] The second upper mold 31 is provided with a concave mold B8, which includes a fixed mold B81 and a movable mold B82. The movable mold B82 is driven to slide horizontally by a sliding mechanism B9. The movable mold B82 is provided with an inner cavity 821 and a protrusion 822 located in the cavity. The protrusion 822 is used to form the shell cover insertion. The protrusion 822 cooperates with the inner wall of the inner cavity 821 to form a protruding head forming cavity. When the second mold assembly 3 is closed, the movable mold B82 moves inward and closer to the fixed mold B81. At this time, the protrusion 4 with the formed main shell and the concave mold B8 cooperate to form the shell cover forming cavity. When the mold is opened, the movable mold B82 moves outward and away from the fixed mold B81 to drive the protrusion 822 and the inner cavity 821 to detach from the formed shell cover.

[0052] Specifically, the sliding mechanism A7 includes a sliding block A71 and an actuator A72. The sliding block A71 is connected to the movable mold A62. The actuator A72 and the sliding block A71 are vertically inserted and form an inclined abutment fit. When the mold is opened and closed, the actuator A72 moves vertically relative to the sliding block A71, driving the sliding block A71 to slide horizontally on the first upper mold 21, thereby driving the movable mold A62 to move inward or outward. The first upper mold 21 of the first mold assembly 2 includes a withdrawal template A211 and a core template A212 located below it. The cavity mold A6 is disposed at the bottom of the core template A212. The actuator A72 is directly or indirectly connected to the withdrawal template A211. The withdrawal template A211 can perform opening and closing actions relative to the core template A212. When the first mold assembly 2 opens, the withdrawal template A211 in the first upper mold 21 moves upward before the core template A212, and drives the actuator A72 upward, thereby driving the sliding block A71 to move the movable mold A62 outward. When closing, the withdrawal template A211 can move upward relative to the core template A212. 212 moves downward and drives the actuator A72 downward, thereby driving the sliding block A71 to drive the movable mold A62 to move inward; the sliding mechanism A7 also includes a driving member 73 fixed to the side of the ejector template A211 and a guide member 74 fixed to the side of the core template A212. The transmission head 731 at the lower end of the driving member 73 and the actuator A72 are horizontally inserted (it is a T-shaped structure fit, the transmission head 741 is T-shaped, and the actuator A has a T-shaped groove 721 that fits with it) and form a vertical positioning, and the actuator A72 and the guide member 74 form a vertical sliding fit, and the sliding is guided by the vertical guide rail groove.

[0053] The sliding mechanism B9 includes a sliding block B91 and an actuator B92. The sliding block B91 is connected to the movable mold B82 (by plug-in or screw connection). The actuator B92 and the sliding block B91 are vertically inserted and form an inclined abutment fit. When the mold is opened and closed, the actuator B92 moves vertically relative to the sliding block B91, causing the sliding block B91 to slide horizontally on the first upper mold 21, thereby driving the movable mold B82 to slide inward or outward. The second upper mold 31 of the second mold assembly 3 includes a withdrawal template B311 and a core template B312 located below it. The cavity mold B8 is disposed at the bottom of the core template B312. The actuator B92 is directly or indirectly connected to the withdrawal template B311. The withdrawal template B311 can perform opening and closing actions relative to the core template B312. When the second mold assembly 3 opens, the withdrawal template B311 in the second upper mold 31 moves upward before the core template B312, and drives the actuator B92 upward, thereby driving the slide block B91 to drive the movable mold B82 to move outward. When the mold closes, the withdrawal template B311 can move downward relative to the core template B312, and drives the actuator B92 downward, thereby driving the slide block B91 to drive the movable mold B82 to move inward. The actuator B92 of the sliding mechanism B9 is directly connected to the retraction template B311. The sliding block B91 has an oblique guide cavity 911, and the lower end of the actuator B92 has an oblique guide head 921 inserted into the oblique guide cavity.

[0054] The specific inclined surface abutment fit between the aforementioned actuator and the slide block can be the slide mechanism 400 or 700 disclosed in CN212528536U, which designs the actuator and the slide block as a T-type fit structure; or it can be the core-pulling drive group A disclosed in CN222495147U, which designs the actuator and the slide block as an inclined guide cavity and an inclined insert block fit. When the actuator is connected to the ejection platen, the inclined surface of its fit with the slide block extends inclinedly from top to bottom away from the fixed mold.

[0055] The following are some common ways to achieve the retraction template moving first: (1) Set up elastic elements such as springs. When the mold opens, the mold opening force of the injection molding machine acts on the retraction template first, overcoming the spring force, so that the retraction template moves before the core template. When the mold closes, the spring resets and pushes the retraction template back to the initial position. (2) Use a sequential mold opening mechanism, such as a swing hook type, a pull plate type or a hydraulic sequence valve. Taking the swing hook type as an example, at the beginning of the mold opening, the swing hook locks the retraction template, so that the retraction template moves a distance with the moving template first. When the swing hook is released, the core template starts to move. Other methods. Or, do not set up a retraction template, connect the actuator to the lower mold, and at this time, the inclined surface of the actuator and the sliding block is inclined from top to bottom towards the side closer to the fixed mold.

[0056] Specifically, the first mold assembly 2 is provided with two sets of main shell forming cavities, and the second mold assembly 3 is provided with two sets of shell cover forming cavities.

[0057] The working principle of this utility model:

[0058] The first mold assembly 2 and the second mold assembly 3 can be injection molded simultaneously.

[0059] The main shell is injection molded by the first mold assembly 2. When the mold is closed, the ejector plate A211 and the core plate A212 in the first upper mold 21 will both move downward, and the ejector plate A211 will move downward independently relative to the core plate A212, thereby driving the actuator A72 to move downward. Since the actuator A72 and the sliding block A71 are in inclined contact, the sliding block A71 slides horizontally under the action of the actuator A72, and drives the movable mold A62 to move inward and close to the fixed mold A61. At this time, the side core pull 622 abuts against the end face of the fixed mold A61, and the side core head 621 cooperates with the end face of the fixed mold A61 to form a lug forming cavity 60. The punch 4 and the die A6 cooperate to form the main shell forming cavity. The first color plastic is injected through the first color injection port to complete the first injection molding of the main shell.

[0060] When the mold is opened, the ejector plate A211 in the first upper mold 21 moves upward before the core plate A212, which drives the actuator A72 to move upward. The sliding block A71 slides horizontally in the opposite direction under the action of the actuator A72, which drives the movable mold A62 to move outward away from the fixed mold A61. The side core puller 622 is separated from the main shell after molding. Then the core plate A212 moves upward to complete the mold opening.

[0061] Subsequently, the turntable mechanism 1 drives the first lower mold 22 and the second lower mold 32 to rotate synchronously, so that the first lower mold 22 with the formed main shell part is swapped with the original second lower mold 32 to become the new second lower mold, and the shell cover is injected by the second mold assembly 3.

[0062] During the injection molding process of the second mold assembly 3, when the mold is closed, both the ejector platen B311 and the core platen B312 in the second upper mold 31 will move downwards, and the ejector platen B311 will move downwards independently relative to the core platen B312, thereby driving the actuator B92 to move downwards. The slide block B91 slides horizontally under the action of the actuator B92, driving the movable mold B82 to move inwards and approach the fixed mold B81. The core 822 abuts against the end face of the fixed mold A61. The punch 4 with the main shell part after molding and the die B8 cooperate to form the shell cover molding cavity. The second color plastic is injected through the second color injection port to complete the injection molding of the shell cover, realizing the dual-color injection molding of the USB charging switch shell.

[0063] When the mold is opened, the ejector plate B311 in the second upper mold 31 moves upward before the core plate B312, which drives the actuator B92 to move upward. The sliding block B91 slides horizontally in the opposite direction under the action of the actuator B92, which drives the movable mold B82 to move away from the fixed mold B81. The protruding core 822 and the inner cavity 821 are separated from the molded shell cover. Then the core plate B312 moves upward to complete the mold opening.

[0064] Finally, the product ejection mechanism of the second lower mold ejects the molded USB charging switch shell out of the mold, completing the entire injection molding process.

[0065] It should be noted that in the description of this utility model, all directional indicators (such as up, down, forward, backward, etc.) are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0066] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is 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. In the description of this utility model, "a number" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0067] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "installation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A two-color injection mold for a USB charging switch housing, comprising a turntable mechanism (1), a first mold assembly (2), and a second mold assembly (3), wherein: The turntable mechanism (1) is used to provide a rotating station; The first mold assembly (2) includes a first upper mold (21) and a first lower mold (22), wherein the first upper mold (21) is provided with a first color injection port; The second mold assembly (3) includes a second upper mold (31) and a second lower mold (32), wherein the second upper mold (31) is provided with a second color injection port; The first lower mold (22) and the second lower mold (32) are fixed to the turntable mechanism (1) and rotate synchronously with it, so that the positions of the first lower mold (22) and the second lower mold (32) can be interchanged. Both lower molds are equipped with product ejection mechanisms, and the two upper molds are synchronously opened and closed. The first lower mold (22) and the second lower mold (32) have the same structure and are both provided with a punch (4). The punch (4) is provided with a vertical insert (5) for forming the first through hole of the main shell. The first upper mold (21) is provided with a concave mold A (6), which includes a fixed mold A (61) and a movable mold A (62). The movable mold A (62) is driven to slide horizontally by a sliding mechanism A (7). The inner top wall of the fixed mold A (61) is provided with a shaping protrusion (611) for forming the notch of the main shell. One end of the shaping protrusion (611) is provided with a lower shaping layer (612) for forming the lower plate A of the main shell and an upper shaping layer (613) for forming the upper plate A of the main shell. The upper shaping layer (613) protrudes relative to the lower shaping layer (612) to form a shoulder step structure. The movable mold A (62) is provided with two sides. The side core head (621) has a side core pull (622) on its end face for forming the second through hole of the main shell. When the first mold assembly (2) is closed, the movable mold A (62) moves inward and closes to the fixed mold A (61), so that the side core pull (622) abuts against the end face of the fixed mold A (61) and the side core head (621) cooperates with the end face of the fixed mold A (61) to form a lug forming cavity (60). At this time, the punch (4) and the die A (6) cooperate to form the main shell forming cavity. When the mold is opened, the movable mold A (62) moves outward away from the fixed mold A (61) so as to drive the side core pull (622) to detach from the main shell after forming. The second upper mold (31) is provided with a concave mold B (8), which includes a fixed mold B (81) and a movable mold B (82). The movable mold B (82) is driven to slide horizontally by a sliding mechanism B (9). The movable mold B (82) is provided with an inner cavity (821) and a protrusion (822) located in the cavity. The protrusion (822) is used to form the shell cover socket. The protrusion (822) cooperates with the inner wall of the inner cavity (821) to form a protruding head forming cavity. When the second mold assembly (3) is closed, the movable mold B (82) moves inward and closes to the fixed mold B (81). At this time, the protrusion (4) with the main shell part after molding and the concave mold B (8) cooperate to form the shell cover forming cavity. When the mold is opened, the movable mold B (82) moves outward and away from the fixed mold B (81) so as to drive the protrusion (822) and the inner cavity (821) to detach from the shell cover after molding.

2. The dual-color injection mold for the USB charging switch housing according to claim 1, characterized in that, The sliding mechanism A (7) includes a sliding block A (71) and an actuator A (72). The sliding block A (71) is connected to the movable mold A (62). The actuator A (72) and the sliding block A (71) are interlocked vertically and form a sloped contact fit. When the mold is opened and closed, the actuator A (72) moves vertically relative to the sliding block A (71), causing the sliding block A (71) to slide horizontally on the first upper mold (21), thereby driving the movable mold A (62) to move inward or outward. The sliding mechanism B (9) includes a sliding block B (91) and an actuator B (92). The sliding block B (91) is connected to the movable mold B (82). The actuator B (92) and the sliding block B (91) are interlocked vertically and form a sloped contact fit. When the mold is opened and closed, the actuator B (92) moves vertically relative to the sliding block B (91), causing the sliding block B (91) to slide horizontally on the first upper mold (21), thereby driving the movable mold B (82) to move inward or outward.

3. The dual-color injection mold for the USB charging switch housing according to claim 2, characterized in that, The first upper mold (21) of the first mold assembly (2) includes a withdrawal template A (211) and a core template A (212) located below it. The cavity mold A (6) is disposed at the bottom of the core template A (212). The actuator A (72) is directly or indirectly connected to the withdrawal template A (211). The withdrawal template A (211) can perform opening and closing actions relative to the core template A (212). When the first mold assembly (2) opens, the withdrawal template A (211) in the first upper mold (21) moves upward before the core template A (212) and drives the actuator A (72) upward, thereby driving the slide block A (71) to drive the movable mold A (62) outward. When the mold closes, the withdrawal template A (211) can move downward relative to the core template A (212) and drive the actuator A (72) downward, thereby driving the slide block A (71) to drive the movable mold A (62) inward. The second upper mold (31) of the second mold assembly (3) includes a withdrawal template B (311) and a core template B (312) located below it. The cavity mold B (8) is located at the bottom of the core template B (312). The actuator B (92) is directly or indirectly connected to the withdrawal template B (311). The withdrawal template B (311) can perform opening and closing actions relative to the core template B (312). When the second mold assembly (3) opens, the withdrawal template B (311) in the second upper mold (31) moves upward before the core template B (312) and drives the actuator B (92) upward, thereby driving the slide block B (91) to drive the movable mold B (82) outward. When the mold closes, the withdrawal template B (311) can move downward relative to the core template B (312) and drive the actuator B (92) downward, thereby driving the slide block B (91) to drive the movable mold B (82) inward.

4. The dual-color injection mold for the USB charging switch housing according to claim 3, characterized in that, The positioning mechanism A (7) further includes a driving member (73) fixed to the side of the ejector template A (211) and a guide member (74) fixed to the side of the core template A (212). The transmission head (731) at the lower end of the driving member (73) is horizontally inserted with the actuator A (72) and forms a vertical positioning, and the actuator A (72) and the guide member (74) form a vertical sliding fit. The actuator B (92) of the sliding mechanism B (9) is directly connected to the ejector plate B (311). The sliding block B (91) has an oblique guide cavity (911), and the lower end of the actuator B (92) has an oblique guide head (921) inserted into the oblique guide cavity.

5. The dual-color injection mold for the USB charging switch housing according to claim 1, 2, or 3, characterized in that, The first mold assembly (2) is provided with two sets of main shell forming cavities, and the second mold assembly (3) is provided with two sets of shell cover forming cavities.

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