Mold structure for frame injection molding of hardware
By introducing positioning needles and positioning components into the injection mold, combined with the lateral movement of the shovel base assembly, the problem of difficult injection molding of special holes of hardware is solved, and precise injection molding of the frame part of the mobile phone is achieved, improving the reliability and accuracy of the mold.
Patent Information
- Application Number
- CN202422304775.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-21
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-09-21
AI Technical Summary
The existing injection molds have complex structures and troublesome positioning operations, especially the special holes of hardware are difficult to injection mold, resulting in low reliability of injection molding of mobile phone frames.
A mold structure including front mold core, rear mold core, rear mold frame and pad plate is adopted, and positioning needles and row position components are set for limit extrusion. Combined with the lateral movement of the base component, and combined with the inner row position and guide rail guide grooves, precise hole injection molding is achieved.
The mold structure is optimized, the reliability and accuracy of injection molding is improved, and the problems such as burrs are avoided, ensuring accurate injection molding of the frame parts of the hardware.
Smart Images
Figure CN223199453U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection molds, in particular to a mold structure for performing frame injection molding on hardware parts. Background Art
[0002] The midframe is a crucial component of a phone, located in the middle, connecting the front and back panels. Its primary function is to support and protect the phone's internal components while also enhancing its appearance and overall quality. The midframe has become an integral part of modern smartphone design, with its material, craftsmanship, and design directly impacting both the phone's performance and appearance.
[0003] The midframe is the frame between the phone's screen and back cover, supporting various internal components. Components like the battery, motherboard, camera, cables, sensors, microphones, and earpiece are all mounted on a metal skeleton called the midframe. The bezel is the edge around the phone's screen, the narrow edge between the screen and the body.
[0004] In order to improve the overall structural strength of the mobile phone and enhance the heat dissipation performance, the middle frame is usually made of metal, and in order to transmit wireless signals and enhance the anti-drop performance, the frame is usually made of plastic.
[0005] For the preparation of such injection-molded parts with metal inserts, the current injection mold structure is complex, the positioning operation is troublesome, and the reliability is not high. In particular, the mobile phone middle frame also has some holes in special positions, such as the hole for installing the mobile phone SIM card, the hole for installing the speaker, the hole for installing the headphone jack, etc., which makes the injection molding more difficult and requires more precise positional relationship of the hardware within the injection molding space.
[0006] Therefore, how to provide a mold structure for frame injection molding of hardware parts, thereby optimizing the injection molding process of the mobile phone middle frame, is a technical problem that needs to be solved. Utility Model Content
[0007] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.
[0008] The utility model provides a mold structure for injection molding the frame of hardware, comprising a front mold core, a rear mold core, a rear mold frame and a backing plate, wherein the rear mold core is installed on the rear mold frame and, driven by the rear mold frame, is molded together with the front mold core to form an injection molding space, and the rear mold core is provided with a positioning pin, and the positioning pin is used to place the hardware in the injection molding space so that the injection mold can perform injection molding operations on the frame portion of the hardware; the rear mold core is provided with a slide assembly, one end of the slide assembly is connected to the rear mold core, and the other end thereof abuts against the hardware, thereby limiting and squeezing the hardware when the mold is closed, so that the hardware is placed in a preset position; the backing plate is provided with a shovel base assembly, one end of the shovel base assembly is fixedly connected to the backing plate, and the other end thereof can drive the slide assembly to move laterally a certain distance, thereby reaching the preset mold closing position, and performing injection molding operations on the edge portion of the hardware.
[0009] As a further solution of the present invention: the slider assembly is provided with an inner slider and a slider seat, the slider seat is fixed to the rear mold core, the inner slider is slidably connected to the rear mold core through the slider seat, and the slider seat forms a limit for the inner slider in the mold closing direction.
[0010] As a further solution of the present invention: the shovel base assembly is provided with a guide rail, and the inner position is provided with a guide groove corresponding to the position of the guide rail. The guide rail and the guide groove cooperate with each other to form a sliding connection, so that when the shovel base assembly moves along the mold closing direction, the inner position can be driven to move laterally.
[0011] As a further solution of the present invention: a spring and a bolt are provided between the rear mold frame and the pad, and the pad is provided with a through hole and a step position corresponding to the position of the bolt. The bolt passes through the through hole and is fixed to the rear mold frame, and the nut of the bolt is free to move on the other side of the rear mold frame at the step position. One end of the spring abuts against the rear mold frame, and the other end abuts against the step position, thereby driving the rear mold frame away from the pad.
[0012] As a further solution of the present invention: the inner position is provided with a first position, the shovel base assembly is provided with a first shovel base, the first position and the first shovel base cooperate with each other, so as to perform injection molding on the first hole position of the hardware.
[0013] As a further solution of the present invention: the inner row position is provided with a second row position, the shovel base assembly is provided with a second shovel base, and the second row position and the second shovel base cooperate with each other to perform injection molding on the second hole position of the hardware.
[0014] As a further solution of the present invention: the inner row position is provided with a third row position, the shovel base assembly is provided with a third shovel base, and the third row position and the third shovel base cooperate with each other to perform injection molding on the third hole position of the hardware.
[0015] As a further solution of the present invention: it also includes side inserts, which are installed on the rear mold frame and form an enclosure on the four sides of the rear mold core, thereby forming an injection space together with the rear mold core and the front mold core.
[0016] As a further solution of the present invention: it also includes a front mold frame, a front mold fixing plate, a casting system, a cooling system, an ejection system, a guide system and a rear mold fixing plate, the front mold core is installed on the front mold frame, the front mold frame is installed on the front mold fixing part, the casting system is used to perform hot flow casting in the injection molding space, the cooling system cools the injection molded parts in the injection molding space, the ejection system ejects the cooled injection molded parts, the rear mold frame is installed on the rear mold fixing plate, and the guide system is used to guide the injection mold during the mold closing process.
[0017] Compared with the prior art, the beneficial effects of the present invention are:
[0018] 1. By setting up the slide assembly, the hardware can be limited and squeezed first when the mold is closed, so that the position of the hardware can be more accurately placed. Then, the shovel base assembly installed on the pad of delayed mold closing is used to drive the slide assembly so that it can move horizontally a certain distance, and then the corresponding holes are injected into the mold, thereby optimizing the structural complexity of the entire injection mold and improving its reliability.
[0019] 2. Through the cooperation of the inner slider, slider seat and shovel base assembly, after the shovel base assembly is driven by the pad, it can drive the inner slider to move horizontally accordingly, so that it can move a certain distance from the inside of the middle frame to the edge position, avoiding the protrusions on the hardware and entering the corresponding hole for injection molding operation.
[0020] Therefore, after the above-mentioned improvements, the utility model can provide a mold structure for performing frame injection molding on hardware parts, so that it can perform frame injection molding operations on the four sides of the middle frame of the mobile phone. The injection mold structure is simple, the positioning is accurate, and the reliability is higher, so that the injection shape of the frame part is more precise, avoiding problems such as burrs.
[0021] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0023] Figure 1 This is a schematic diagram of the overall structure of the injection mold of the utility model;
[0024] Figure 2 This is a schematic structural diagram of the front mold core and side inserts of the utility model;
[0025] Figure 3 This is a structural diagram of the rear mold core and the backing plate of the utility model;
[0026] Figure 4 This is a structural diagram of the bolt and step position of the utility model;
[0027] Figure 5 It is a structural diagram of the inner slide and the slide seat of the utility model.
[0028] The reference numerals and names in the figures are as follows:
[0029] 10 front mold core; 11 front mold frame; 12 front mold fixing plate; 13 casting system; 14 cooling system; 15 ejection system; 16 guide system; 17 rear mold fixing plate; 20 rear mold core; 21 positioning pin; 22 slide assembly; 23 inner slide; 24 guide groove; 25 slide seat; 26 shovel base assembly; 27 guide rail; 31 first slide; 32 first shovel base; 33 second slide; 34 second shovel base; 35 third slide; 36 third shovel base; 40 rear mold frame; 41 spring; 42 bolt; 43 side insert; 50 pad; 51 through hole; 52 step position; 60 hardware; 61 first hole position; 62 second hole position; 63 third hole position. DETAILED DESCRIPTION
[0030] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0031] See also Figures 1 to 5In the embodiment of the present invention, a mold structure for injection molding a frame of a hardware part comprises a front mold core 10, a rear mold core 20, a rear mold frame 40 and a backing plate 50. The rear mold core 20 is mounted on the rear mold frame 40 and is driven by the rear mold frame 40 to close the mold with the front mold core 10, thereby forming an injection molding space. The rear mold core 20 is provided with a positioning pin 21, and the positioning pin 21 is used to place the hardware part 60 in the injection molding space so that the injection mold can perform injection molding operations on the frame portion of the hardware part 60; the ... The mold core 20 is provided with a slide assembly 22, one end of which is connected to the rear mold core 20, and the other end thereof abuts against the hardware 60, thereby limiting and squeezing the hardware 60 when the mold is closed, so that the hardware 60 is placed in a preset position; the pad 50 is provided with a shovel base assembly 26, one end of which is fixed to the pad 50, and the other end thereof can drive the slide assembly 22 to move laterally a certain distance, thereby reaching the preset mold closing position, and performing injection molding operations on the edge of the hardware 60.
[0032] Specifically, in order to improve the overall structural strength of the mobile phone and enhance the heat dissipation performance, the middle frame is usually made of metal, and in order to transmit wireless signals and enhance the anti-drop performance, the frame is usually made of plastic. At the same time, in order to enhance the connection strength between the middle frame and the frame, it is best to directly injection mold a plastic frame around the middle frame. However, since the middle frame needs to install various components, its structure is relatively complex, especially the edge part and the plastic frame are combined. The position has a complex structure and is difficult to perform injection molding conveniently. In particular, some special spaces, such as the SIM card installation hole, the speaker installation hole, etc., need to make room for the corresponding frame holes on the middle frame, and it is necessary to set metal protrusions on the edge of the hole to reinforce the corresponding hole. As a result, when the plastic frame is injection molded, its positioning structure is very complex, the positioning operation is troublesome, and the reliability is not high.
[0033] Secondly, by setting up the slide assembly 22, it can first limit the extrusion of the hardware 60 when the mold is closed, so that the position of the hardware 60 can be placed more accurately. Then, the shovel base assembly 26 installed on the delayed mold closing pad 50 is used to drive the slide assembly 22 so that it can move horizontally a certain distance, and then the corresponding holes are injection molded, thereby optimizing the structural complexity of the entire injection mold and improving its reliability.
[0034] Furthermore, through the cooperation between the inner slider 23, the slider seat 25, and the shovel base assembly 26, the shovel base assembly 26, after being driven by the backing plate 50, can drive the inner slider 23 to move horizontally accordingly, so that it can move a certain distance from the interior of the middle frame to the edge position, avoiding the protrusions on the hardware 60 and entering the corresponding hole for injection molding. Therefore, the injection mold can perform the injection molding operation on the surrounding parts of the mobile phone middle frame. The injection mold has a simple structure, accurate positioning, and higher reliability, making the injection molding shape of the frame more precise and avoiding burrs and other problems.
[0035] like Figure 4 and Figure 5 As shown, preferably, the slide assembly 22 is provided with an inner slide 23 and a slide seat 25, the slide seat 25 is fixed to the rear mold core 20, the inner slide 23 is slidably connected to the rear mold core 20 through the slide seat 25, and the slide seat 25 forms a limit for the inner slide 23 in the mold closing direction.
[0036] Specifically, the slider seat 25 can restrain the inner slider 23 on the rear mold core 20, allowing it to move synchronously with the rear mold core 20 in the mold closing direction, thereby allowing it to abut against the hardware 60. Furthermore, the slider seat 25 and the rear mold core 20 cooperate to form a slide rail for the lateral movement of the inner slider 23, allowing it to move a certain distance laterally under the drive of the shovel base assembly 26.
[0037] like Figure 5 As shown, preferably, the shovel base assembly 26 is provided with a guide rail 27, and the inner position 23 is provided with a guide groove 24 corresponding to the position of the guide rail 27. The guide rail 27 and the guide groove 24 cooperate with each other to form a sliding connection, so that when the shovel base assembly 26 moves along the mold closing direction, it can drive the inner position 23 to move laterally.
[0038] Specifically, in order to move the inner position 23 laterally, it is preferred to set an oblique guide groove 24 and an oblique guide rail 27. The guide rail 27 of the shovel base assembly 26 that moves along the mold closing direction can drive the guide groove 24 that is also obliquely set. By cooperating with the guide rail 27 and the guide groove 24, the inner position 23 can be moved laterally a certain distance and embedded in the corresponding hole for injection molding.
[0039] like Figure 3 and Figure 4As shown, preferably, a spring 41 and a bolt 42 are provided between the rear mold frame 40 and the pad 50, and the pad 50 is provided with a through hole 51 and a step position 52 corresponding to the position of the bolt 42. The bolt 42 passes through the through hole 51 and is fixed to the rear mold frame 40, and the nut of the bolt 42 is free to move on the other side of the rear mold frame 40 at the step position 52. One end of the spring 41 abuts against the rear mold frame 40, and the other end abuts against the step position 52, thereby driving the rear mold frame 40 away from the pad 50.
[0040] Specifically, due to the elastic force of spring 41, the rear mold frame 40 moves away from the backing plate 50. The nut of bolt 42 cooperates with the step 52 to form a stop, limiting the movement of the rear mold frame 40. That is, when the injection mold is in the open state, there is a certain distance between the rear mold frame 40 and the backing plate 50, meaning that the rear mold frame 40 is away from the backing plate 50 and maintains a certain distance. Therefore, when the mold is closed, the rear mold frame 40 can drive the rear mold core 20 to contact the front mold core 10 first, thereby placing the hardware 60 in the injection molding space. The slide assembly 22 mounted on the rear mold core 20 then abuts the hardware 60, accurately securing it within the injection molding space. Then continue to close the mold, so that the pad 50 continues to move toward the rear mold frame 40, and compress the spring 41 to cause it to deform, thereby causing the pad 50 to continue to move toward the rear mold frame 40, and at the same time drive the shovel base assembly 26 to move synchronously toward the injection space, so that its guide rail 27 cooperates with the guide groove 24 of the inner position 23, thereby driving the inner position 23 to move horizontally a certain distance, completing the positioning and fixation of the hardware 60.
[0041] like Figure 4 and Figure 5 As shown, preferably, the inner position 23 is provided with a first position 31, and the shovel base assembly 26 is provided with a first shovel base 32. The first position 31 and the first shovel base 32 cooperate with each other to perform injection molding on the first hole 61 of the hardware 60. The inner position 23 is provided with a second position 33, and the shovel base assembly 26 is provided with a second shovel base 34. The second position 33 and the second shovel base 34 cooperate with each other to perform injection molding on the second hole 62 of the hardware 60. The inner position 23 is provided with a third position 35, and the shovel base assembly 26 is provided with a third shovel base 36. The third position 35 and the third shovel base 36 cooperate with each other to perform injection molding on the third hole 63 of the hardware 60.
[0042] Specifically, the corresponding slide assembly 22 can be set according to the specific location and number of the mobile phone installation parts. For example, multiple slide assemblies 22 can be set to perform injection molding operations on multiple different holes. Similarly, the corresponding number of shovel base assemblies 26 needs to be set to cooperate.
[0043] like Figure 2As shown, preferably, it also includes side inserts 43, which are installed on the rear mold frame 40 and form an enclosure on the four sides of the rear mold core 20, thereby forming an injection space together with the rear mold core 20 and the front mold core 10.
[0044] Specifically, since the frame has a certain thickness and corresponding pores, the injection molding space formed by directly combining the front mold core 10 and the rear mold core 20 is insufficient to perform a complete injection molding operation on the frame. Therefore, corresponding side inserts 43 are required. Preferably, corresponding side inserts 43 are provided on all four sides of the frame to enclose the injection molding space, thereby forming a complete injection molding space and performing a complete injection molding operation on the frame.
[0045] like Figure 1 As shown, preferably, it also includes a front mold frame 11, a front mold fixing plate 12, a casting system 13, a cooling system 14, an ejection system 15, a guide system 16 and a rear mold fixing plate 17, the front mold core 10 is installed on the front mold frame 11, the front mold frame 11 is installed on the front mold fixing part, the casting system 13 is used to perform hot flow casting in the injection space, the cooling system 14 cools the injection molded parts in the injection space, the ejection system 15 ejects the cooled injection molded parts, the rear mold frame 40 is installed on the rear mold fixing plate 17, and the guide system 16 is used to guide the injection mold during the mold closing process.
[0046] Specifically, to install the front mold core 10, a corresponding front mold frame 11 and front mold fixing plate 12 are also required. Similarly, the rear mold frame 40 also requires a matching rear mold fixing plate 17, so that the entire injection mold can perform corresponding mold closing and mold opening operations. It is understandable that the entire injection mold also requires a corresponding pouring system 13, cooling system 14, ejection system 15, and guide system 16 to enable the entire injection mold to perform the predetermined injection molding operation. These systems can all be configured using existing technologies and will not be described in detail again.
[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.
Claims
1. A mold structure for frame injection molding of hardware, characterized in that: The invention comprises a front mold core (10), a rear mold core (20), a rear mold frame (40) and a backing plate (50), wherein the rear mold core (20) is installed on the rear mold frame (40) and is driven by the rear mold frame (40) to close the mold with the front mold core (10), thereby forming an injection molding space, and the rear mold core (20) is provided with a positioning pin (21), and the positioning pin (21) is used to place the hardware (60) in the injection molding space so that the injection mold can perform an injection molding operation on the frame portion of the hardware (60); the rear mold core (20) is provided with a slide assembly (21) 2), one end of the slide assembly (22) is connected to the rear mold core (20), and the other end thereof abuts against the hardware (60), thereby limiting and squeezing the hardware (60) when the mold is closed, so that the hardware (60) is placed in a preset position; the pad (50) is provided with a shovel base assembly (26), one end of the shovel base assembly (26) is fixed to the pad (50), and the other end thereof can drive the slide assembly (22) to move a certain distance laterally, thereby reaching the preset mold closing position, and performing injection molding operation on the edge of the hardware (60).
2. A mold structure for frame injection molding of hardware according to claim 1, characterized in that: The slide assembly (22) is provided with an inner slide (23) and a slide seat (25), wherein the slide seat (25) is fixed to the rear mold core (20), the inner slide (23) is slidably connected to the rear mold core (20) via the slide seat (25), and the slide seat (25) forms a limit for the inner slide (23) in the mold closing direction.
3. A mold structure for frame injection molding of hardware according to claim 2, characterized in that: The shovel base assembly (26) is provided with a guide rail (27), and the inner position (23) is provided with a guide groove (24) at a position corresponding to the guide rail (27). The guide rail (27) and the guide groove (24) cooperate with each other to form a sliding connection, so that when the shovel base assembly (26) moves along the mold closing direction, the inner position (23) can be driven to move horizontally.
4. The mold structure for performing frame injection molding on hardware according to claim 1, characterized in that: A spring (41) and a bolt (42) are provided between the rear mold frame (40) and the backing plate (50); a through hole (51) and a step position (52) are provided on the backing plate (50) at a position corresponding to the bolt (42); the bolt (42) passes through the through hole (51) and is fixed to the rear mold frame (40); and the nut of the bolt (42) is free to move relative to the other side of the rear mold frame (40) at the step position (52); one end of the spring (41) abuts against the rear mold frame (40), and the other end abuts against the step position (52), thereby driving the rear mold frame (40) away from the backing plate (50).
5. The mold structure for performing frame injection molding on hardware according to claim 2, characterized in that: The inner row position (23) is provided with a first row position (31), and the shovel base assembly (26) is provided with a first shovel base (32). The first row position (31) and the first shovel base (32) cooperate with each other to perform injection molding on the first hole position (61) of the hardware (60).
6. The mold structure for performing frame injection molding on hardware according to claim 2, characterized in that: The inner row position (23) is provided with a second row position (33), and the shovel base assembly (26) is provided with a second shovel base (34). The second row position (33) and the second shovel base (34) cooperate with each other to perform injection molding on the second hole position (62) of the hardware (60).
7. The mold structure for performing frame injection molding on hardware according to claim 2, characterized in that: The inner row position (23) is provided with a third row position (35), and the shovel base assembly (26) is provided with a third shovel base (36). The third row position (35) and the third shovel base (36) cooperate with each other to perform injection molding on the third hole position (63) of the hardware (60).
8. The mold structure for frame injection molding of hardware according to claim 1, characterized in that: The side insert (43) is also included. The side insert (43) is installed on the rear mold frame (40) and forms an enclosure on the four sides of the rear mold core (20), thereby forming an injection space together with the rear mold core (20) and the front mold core (10).
9. The mold structure for frame injection molding of hardware according to claim 1, characterized in that: The invention also includes a front mold frame (11), a front mold fixing plate (12), a casting system (13), a cooling system (14), an ejection system (15), a guide system (16) and a rear mold fixing plate (17), wherein the front mold core (10) is mounted on the front mold frame (11), the front mold frame (11) is mounted on the front mold fixing portion, the casting system (13) is used to perform hot flow casting in the injection molding space, the cooling system (14) cools the injection molded parts in the injection molding space, the ejection system (15) ejects the cooled injection molded parts, the rear mold frame (40) is mounted on the rear mold fixing plate (17), and the guide system (16) is used to guide the injection mold during the mold closing process.