Mobile phone protective sleeve main body and key two-color LSR forming die

Abstract

The application discloses a mobile phone protective sleeve main body and key two-color LSR forming die, which comprises an upper die, a lower die, a slider structure and an ejection mechanism, wherein the slider structure comprises a slider body, a slider insert, an inclined guide column and a slider block, the slider insert is arranged on the slider body, the slider insert is provided with an insertion end and a connecting end, the insertion end is provided with a containing groove for arranging the key, and the connecting end is hinged to the slider body; the ejection mechanism comprises a ejector pin plate, an ejection seat and an ejector rod, the top of the ejection seat is provided with a sliding groove, the bottom of the ejector rod is transversely movably arranged in the sliding groove; the top of the ejector rod is provided with a guide rod, the slider insert is provided with a transverse guide groove, and the ejection mechanism drives the slider insert to turn up and down through the vertical movement of the ejector rod. The arrangement that the ejector rod and the connecting end are hinged to the slider body realizes automatic turning of the slider insert, the structure design is ingenious, the key feeding is convenient, and the production efficiency of the mobile phone protective sleeve is improved.

Description

Technical Field

[0001] This invention relates to the field of LSR molding die technology, and in particular to a dual-color LSR molding die for a mobile phone case body and buttons. Background Technology

[0002] A mobile phone case includes a case body, a back plate, and buttons. The case body has a cavity for housing the mobile phone, the back plate is located on the bottom wall of the cavity, and the buttons are located on the outer wall of the case. Usually, the case body and buttons are injection molded simultaneously. During the injection molding process, the buttons are prone to overflow and misalignment. To address this issue, a method has been developed where the buttons are molded first, and then the case body is LSR molded onto the outside of the buttons. In this method, the buttons need to be mounted on a slider, which is then inserted into the mold cavity. Therefore, a slider capable of holding materials is required.

[0003] In the prior art, the slider structure for loading materials is disclosed in Chinese Patent ZL201910171610.0. This structure features an insertion end on the slider insert with a socket for terminal insertion. During electronic component encapsulation, the terminals can be accurately inserted into the socket of the slider insert, eliminating the risk of compression molding. The mold then closes to inject plastic casing into the electronic component, successfully completing the encapsulation process. However, in actual use, due to the high temperature inside the mold and the slider's close contact with the mold, directly inserting materials (i.e., terminals) onto the slider can easily burn the operator's hands. Furthermore, the small size of the materials makes operation inconvenient while wearing gloves. Therefore, it is necessary to wait for the mold temperature to drop before inserting materials, resulting in a long waiting time and affecting production continuity. Additionally, removing the slider insert before inserting materials is cumbersome and time-consuming, leading to low production efficiency.

[0004] Therefore, it is necessary to design a new technical solution to solve the above problems. Summary of the Invention

[0005] In view of this, the present invention addresses the deficiencies of the existing technology. Its main objective is to provide a dual-color LSR molding die for a mobile phone case body and buttons. By incorporating an ejector seat and an ejector rod, when the upper and lower molds open, the upper mold moves the slider bundle away from the slider body. Simultaneously, the inclined guide post moves the slider insert on the slider body away from the mold cavity. The slider body also moves the ejector rod in a sliding groove. The ejector rod is slidably mounted on the slider insert and its connecting end is hinged to the slider body. This allows the ejector rod to rotate the slider insert upwards relative to the slider body during ejection, facilitating material insertion by the operator in the receiving groove. At this time, the receiving groove is away from the lower mold, making material loading easier and preventing burns. Furthermore, when the upper and lower molds close, the ejector rod resets, simultaneously resetting the slider insert. The hinged connection of the ejector rod and its connecting end to the slider body enables automatic rotation of the slider insert. This ingenious structural design facilitates button loading and improves the production efficiency of mobile phone cases.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A dual-color LSR molding die for a mobile phone protective case body and buttons includes an upper die, a lower die, and a slider structure. The upper die and the lower die form a mold cavity. The lower die is provided with an ejection mechanism. The slider structure includes a slider body, a slider insert, an inclined guide post, and a slider bundle. The slider body is slidably disposed on the lower die. The slider insert is disposed on the slider body. The inclined guide post and the slider bundle are both disposed on the upper die. The inclined guide post is used to move the slider body laterally, and the slider bundle is used to press the slider body.

[0008] The slider insert has an insertion end and a connecting end. The insertion end has a receiving groove for mounting the button, and the connecting end is hinged to the slider body.

[0009] The lower mold is provided with a limiting part, and the limiting part is provided with a guide hole for the insertion end to pass through. The guide hole is used to limit the sliding insert to flip and prevent the sliding insert from shaking during mold opening, mold closing and mobile phone case forming.

[0010] The ejection mechanism includes an ejector plate, an ejector seat, and an ejector rod. The ejector plate is located on the lower mold, and the ejector seat is located on the ejector plate. The top of the ejector seat has a sliding groove, and the bottom of the ejector rod is laterally movable in the sliding groove. The slider body drives the ejector rod to move laterally in the sliding groove. The top of the ejector rod has a guide rod, and correspondingly, the slider insert has a transverse guide groove that matches the guide rod. The top of the ejector rod is slidably located in the transverse guide groove through the guide rod. The ejection mechanism drives the slider insert to flip up and down relative to the slider body through the vertical movement of the ejector rod. The ejector rod and its connecting end are hinged to the slider body, realizing automatic flipping of the slider insert. The structure is ingeniously designed, the button loading is convenient, and the production efficiency of mobile phone cases is improved.

[0011] As a preferred embodiment, the slider insert includes a main body, with the insertion end and the connecting end respectively located at both ends of the main body. An extension plate is provided at the bottom of the main body, and the transverse guide groove is provided on the extension plate. The extension plate facilitates the installation of the ejector rod.

[0012] As a preferred embodiment, the extension plates are two plates spaced apart, the top of the ejector rod is located between the two extension plates, and the two ends of the guide rod extend into the corresponding transverse guide grooves.

[0013] As a preferred embodiment, the insertion end, connecting end, and extension plate are all integrally formed in the main body, making the manufacturing of the slider insert convenient.

[0014] As a preferred embodiment, the top of the slider body is recessed with a mounting position, the mounting position is provided with a first hinge part, the slider insert is disposed in the mounting position and the top of the slider insert does not exceed the top of the slider body, the connecting end is provided with a second hinge part that matches the first hinge part, and the slider insert is hinged to the slider body through the cooperation of the first hinge part and the second hinge part.

[0015] The bottom of the mounting position is provided with a clearance groove that passes through the bottom of the slider body, and the ejector rod passes through the clearance groove.

[0016] As a preferred embodiment, the slider body is also provided with a sliding spring, and the lower mold is provided with a limiting component corresponding to the slider body. The sliding spring is still pre-compressed after the mold is opened, and the elastic force generated by the pre-compression restricts the slider body from sliding back. The limiting component, together with the sliding spring, restricts the stroke of the slider body.

[0017] As a preferred embodiment, the bottom of the ejector rod is provided with a rotating shaft, and both ends of the rotating shaft are provided with rollers. Correspondingly, the side wall of the sliding groove is provided with roller guide grooves, and the rollers are adapted to the roller guide grooves. The design of the rollers and roller guide grooves reduces the friction of the ejector rod when it moves in the sliding groove, making the ejector rod move more smoothly.

[0018] As a preferred embodiment, the two ends of the sliding groove pass through the ejector seat, and the top periphery of the ejector seat is provided with a stop block, which blocks the openings at both ends of the sliding groove. The arrangement of the two ends of the sliding groove passing through the ejector seat facilitates the installation of the roller in the roller guide groove.

[0019] As a preferred embodiment, the inclined guide post is disposed on the slider bundle block, and both the slider bundle block and the slider body are provided with inclined grooves for the inclined guide post to pass through.

[0020] As a preferred embodiment, the slider body is provided with a first guide surface, and correspondingly, the slider bundle is provided with a second guide surface that matches the first guide surface. The first guide surface and the second guide surface abut against each other. The arrangement of the first guide surface and the second guide surface facilitates the slider bundle and the inclined guide post to drive the slider body to displacement.

[0021] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0022] The main feature is that, by setting an ejector seat and an ejector rod, when the upper and lower molds open, the upper mold drives the slider bundle away from the slider body, while the inclined guide post drives the slider insert on the slider body away from the mold cavity. At the same time, the slider body drives the ejector rod to move in the sliding groove. In conjunction with the ejector rod slidingly set on the slider insert and the connecting end hinged to the slider body, the ejector rod of the ejection mechanism drives the slider insert to flip upward relative to the slider body when ejecting, so that the operator can insert materials into the receiving groove. At this time, the receiving groove is away from the lower mold, which is convenient for the operator to load materials and is not easy to burn hands. When the upper and lower molds close, the ejector rod resets and drives the slider insert to reset. The setting of the ejector rod and the connecting end hinged to the slider body realizes the automatic flipping of the slider insert. The structure is ingeniously designed, the button loading is convenient, and the production efficiency of mobile phone protective cases is improved.

[0023] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0024] Figure 1 This is a perspective view of a preferred embodiment of the present invention;

[0025] Figure 2 This is a cross-sectional view of a preferred embodiment of the present invention;

[0026] Figure 3 This is a three-dimensional schematic diagram of the upper mold according to a preferred embodiment of the present invention;

[0027] Figure 4 This is a perspective view of the lower mold according to a preferred embodiment of the present invention;

[0028] Figure 5 This is a three-dimensional schematic diagram of the slider structure according to a preferred embodiment of the present invention;

[0029] Figure 6 yes Figure 5 Exploded view;

[0030] Figure 7 This is a cross-sectional view of the slider structure according to a preferred embodiment of the present invention;

[0031] Figure 8This is a schematic diagram of the slider feeder loading state according to a preferred embodiment of the present invention.

[0032] Explanation of reference numerals in the attached diagram:

[0033] 10. Slider body 11. Traveling spring

[0034] 101. Mounting position; 102. First hinge part

[0035] 103. Clearance groove; 104. First guide surface

[0036] 20. Slider insert 21. Insertion end

[0037] 211. Receiving groove; 22. Connecting end

[0038] 221. Second hinge section; 23. Main body section

[0039] 24. Extension plate 201, transverse guide groove

[0040] 30. Inclined guide post; 40. Slider bundle block

[0041] 401, Second guide surface; 50, Ejection mechanism

[0042] 51. Ejector seat 52. Ejector lever

[0043] 521, Guide rod; 522, Rotating shaft

[0044] 523, Roller; 53, Stop Block

[0045] 54. Ejector plate

[0046] 501, sliding groove; 502, roller guide groove

[0047] 60, slanted groove, 70, upper mold

[0048] 80. Lower mold; 81. Limiting part

[0049] 82. Guide hole; 83. Limiting component

[0050] 90. Mold cavity. Detailed Implementation

[0051] First, it should be noted that in the description of this invention, the terms "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0052] Please refer to Figures 1 to 8As shown, it illustrates the specific structure of a preferred embodiment of the present invention, including an upper mold 70, a lower mold 80, and a slider structure.

[0053] The upper mold 70 and the lower mold 80 form a mold cavity 90. The lower mold 80 is provided with an ejection mechanism 50. The slider structure includes a slider body 10, a slider insert 20, an inclined guide post 30, and a slider bundle 40. The slider body 10 is slidably disposed on the lower mold 80. The slider insert 20 is disposed on the slider body 10. The inclined guide post 30 and the slider bundle 40 are both disposed on the upper mold 70. The inclined guide post 30 is used to move the slider body 10 laterally, and the slider bundle 40 is used to press the slider body 10 toward the mold cavity 90.

[0054] Specifically, the lower mold 80 is provided with a limiting part 81, and the limiting part 81 is provided with a guide hole 82 for the insertion end to pass through. The guide hole 82 is used to restrict the slider insert 20 from flipping and to prevent the slider insert 20 from shaking during mold opening, mold closing, and mobile phone case molding. In this embodiment, the bottom of the upper mold 70 and the top of the lower mold 80 are both recessed with clearance positions for the slider structure to be installed. The general structure of the mold is a mature technology in the field and will not be described in detail here.

[0055] The top of the slider body 10 is recessed with a mounting position 101 for mounting the slider insert 20. The mounting position 101 is provided with a first hinge part 102. The bottom of the mounting position 101 is provided with a relief groove 103 that passes through the bottom of the slider body 10. Both the slider bundle 40 and the slider body 10 are provided with inclined grooves 60 for the inclined guide post 30 to pass through. The inclined grooves 60 are located on the side of the mounting position 101. Specifically, the slider body 10 is also provided with a sliding spring 11. The sliding spring 11 is still pre-compressed after the mold is opened. The elastic force generated by the pre-compression restricts the slider body 10 from sliding back. When the slider body 10 is installed in the mold, the lower mold 80 is provided with a limiting member 83 corresponding to the slider body 10. The limiting member 83, together with the sliding spring 11, restricts the stroke of the slider body 10. The design of the sliding spring 11 is a mature technology in this field and will not be described in detail here.

[0056] The slider insert 20 has an insertion end 21 and a connecting end 22. The insertion end 21 has a receiving groove 211 for material loading. The connecting end 22 is hinged to the slider body 10. The slider insert 20 is provided with a transverse guide groove 201.

[0057] Specifically, the slider insert 20 is disposed in the mounting position 101, and the top of the slider insert 20 does not exceed the top of the slider body 10. The connecting end 22 is provided with a second hinge part 221 that matches the first hinge part 102. The slider insert 20 is hinged to the slider body 10 through the cooperation of the first hinge part 102 and the second hinge part 221. The slider insert 20 includes a main body 23. The insertion end 21 and the connecting end 22 are respectively disposed at both ends of the main body 23. The bottom of the main body 23 is provided with an extension plate 24. The transverse guide groove 201 is disposed on the extension plate 24. Preferably, there are two extension plates 24 arranged at intervals. The insertion end 21, the connecting end 22, and the extension plate 24 are all integrally formed in the main body 23, which makes the slider insert 20 easy to manufacture.

[0058] In this embodiment, the first hinge portion 102 is provided with a ball structure facing the second hinge portion 221. Correspondingly, the second hinge portion 221 is provided with a guide groove for the ball structure to move. The two ends of the guide groove are provided with limiting grooves. When the slider insert flips upward and resets, the ball structure extends into the corresponding limiting grooves to avoid excessive rotation of the slider insert.

[0059] The inclined guide post 30 is used to move the slider body 10 laterally, and the slider bundle 40 is used to press the slider body 10. Specifically, the inclined guide post 30 is disposed on the slider bundle 40, the slider body 10 is provided with a first guide insertion surface 104, and correspondingly, the slider bundle 40 is provided with a second guide insertion surface 401 that matches the first guide insertion surface 104. The first guide insertion surface 104 and the second guide insertion surface 401 abut against each other. The arrangement of the first guide insertion surface 104 and the second guide insertion surface 401 facilitates the slider bundle 40 and the inclined guide post 30 to drive the slider body 10 to move.

[0060] The ejection mechanism 50 includes an ejection seat 51, an ejection rod 52, and an ejector plate 54. The ejector plate 54 is disposed on the lower mold 80, and the ejection seat 51 is disposed on the ejector plate 54. The top of the ejection seat 51 is provided with a sliding groove 501, and the bottom of the ejection rod 52 is movably disposed laterally in the sliding groove 501. The slider body 10 drives the ejection rod 52 to move laterally in the sliding groove 501. The top of the ejection rod 52 is provided with a guide rod 521 that is adapted to the transverse guide groove 201. The top of the ejection rod 52 is slidably disposed in the transverse guide groove 201 through the guide rod 521. The ejection mechanism 50 drives the slider insert 20 to flip up and down through vertical movement. The ejection mechanism 50 and the connecting end 22 are hinged to the slider body 10 to realize the automatic flipping of the slider insert 20. The structure is ingeniously designed, easy to load, and improves the production efficiency of mobile phone protective cases.

[0061] Specifically, the ejector rod 52 passes through the clearance groove 103, so that the movement of the slider body 10 drives the ejector rod 52 to move. The top of the ejector rod 52 is located between the two extension plates 24, and the two ends of the guide rod 521 extend into the corresponding transverse guide grooves 201; Figure 7 and Figure 8 As shown, when the ejector rod 52 drives the slider insert 20 to flip upward, the guide rod 521 slides to the right in the transverse guide groove 201;

[0062] Preferably, the bottom of the ejector rod 52 is provided with a rotating shaft 522, and both ends of the rotating shaft 522 are provided with rollers 523. Correspondingly, the side wall of the sliding groove 501 is provided with a roller guide groove 502. The rollers 523 are adapted to the roller guide groove 502. The design of the rollers 523 and the roller guide groove 502 reduces the friction of the ejector rod 52 when it moves in the sliding groove 501, and the ejector rod 52 moves more smoothly. Both ends of the sliding groove 501 pass through the ejector seat 51. The top periphery of the ejector seat 51 is provided with a stop block 53. The stop block 53 is fixed to the lower mold 80. The stop block 53 covers the openings at both ends of the sliding groove 501. The setting of the two ends of the sliding groove 501 passing through the ejector seat 51 facilitates the installation of the rollers 523 in the roller guide groove 502.

[0063] This invention relates to a mobile phone protective case made by a dual-color LSR molding mold for the main body and buttons. The main body of the mobile phone protective case is formed by LSR molding. The bottom wall of the cavity in the main body for placing the mobile phone is provided with a PC frame. The back of the PC frame is embedded in the bottom of the cavity. The buttons are formed by silicone hydraulic molding. During the LSR molding process of the main body of the mobile phone protective case, the buttons are placed in the mold cavity of the LSR molding mold and are formed together with the main body of the mobile phone protective case.

[0064] The working principle of this embodiment is described in detail below:

[0065] When the mold opens, the insertion end of the slider insert exits the mold cavity along with the slider body. At the same time, the slider body drives the ejector rod away from the mold cavity. When the upper mold and the lower mold separate, the ejector plate will push the ejector rod upward, and the ejector rod will drive the slider insert to flip upward relative to the slider body.

[0066] When the mold is closed, the ejector rod first drives the slider insert to flip down and reset relative to the slider body. Then the upper and lower molds begin to close. The inclined guide post drives the slider body to move toward the mold cavity. The insertion end of the slider insert is inserted into the mold cavity, and the slider bundle presses the slider body tightly.

[0067] The key design focus of this invention is:

[0068] By incorporating an ejector seat and ejector rod, when the upper and lower molds open, the upper mold drives the slider bundle away from the slider body. Simultaneously, the inclined guide post drives the slider insert on the slider body away from the mold cavity. At the same time, the slider body drives the ejector rod to move in the sliding groove. The ejector rod is slidably mounted on the slider insert and its connecting end is hinged to the slider body. This allows the ejector rod of the ejection mechanism to rotate the slider insert upwards relative to the slider body during ejection, enabling the operator to insert materials into the receiving groove. At this time, the receiving groove is away from the lower mold, facilitating material loading and reducing the risk of burns. When the upper and lower molds close, the ejector rod resets, simultaneously resetting the slider insert. The hinged design of the ejector rod and its connecting end to the slider body enables automatic rotation of the slider insert. This ingenious structural design facilitates button loading and improves the production efficiency of mobile phone cases.

[0069] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A dual-color LSR molding die for a mobile phone protective case body and buttons, comprising an upper die, a lower die, and a slider structure; the upper die and the lower die form a mold cavity, the lower die is provided with an ejection mechanism, the slider structure includes a slider body, a slider insert, an inclined guide post, and a slider bundle block, the slider body is slidably disposed on the lower die, the slider insert is disposed on the slider body, the inclined guide post and the slider bundle block are both disposed on the upper die, the inclined guide post is used to move the slider body laterally, and the slider bundle block is used to press the slider body; characterized in that: The slider insert has an insertion end and a connecting end. The insertion end has a receiving groove for mounting the button, and the connecting end is hinged to the slider body. The lower mold is provided with a limiting part, and the limiting part is provided with a guide hole for the insertion end to pass through. The guide hole is used to restrict the slider insert from flipping. The ejection mechanism includes an ejector plate, an ejector seat, and an ejector rod. The ejector plate is disposed on the lower mold, and the ejector seat is disposed on the ejector plate. The top of the ejector seat is provided with a sliding groove, and the bottom of the ejector rod is movably disposed laterally in the sliding groove. The slider body drives the ejector rod to move laterally in the sliding groove. The top of the ejector rod is provided with a guide rod, and correspondingly, the slider insert is provided with a transverse guide groove that matches the guide rod. The top of the ejector rod is slidably disposed in the transverse guide groove through the guide rod. The ejection mechanism drives the slider insert to flip up and down relative to the slider body through the vertical movement of the ejector rod.

2. The dual-color LSR molding die for a mobile phone protective case body and buttons according to claim 1, characterized in that: The slider insert includes a main body, with the insertion end and the connecting end respectively located at both ends of the main body. An extension plate is provided at the bottom of the main body, and the transverse guide groove is located on the extension plate.

3. The dual-color LSR molding die for a mobile phone protective case body and buttons according to claim 2, characterized in that: The extension plates are two plates spaced apart, the top of the ejector rod is located between the two extension plates, and the two ends of the guide rod extend into the corresponding transverse guide grooves.

4. A dual-color LSR molding die for a mobile phone protective case body and buttons according to claim 2 or 3, characterized in that: The insertion end, connecting end, and extension plate are all integrally formed on the main body.

5. The dual-color LSR molding die for a mobile phone protective case body and buttons according to claim 2, characterized in that: The top of the slider body has a recessed mounting position, the mounting position has a first hinge part, the slider insert is located in the mounting position and the top of the slider insert does not exceed the top of the slider body, the connecting end has a second hinge part that matches the first hinge part, and the slider insert is hinged to the slider body through the cooperation of the first hinge part and the second hinge part. The bottom of the mounting position is provided with a clearance groove that passes through the bottom of the slider body, and the ejector rod passes through the clearance groove.

6. A dual-color LSR molding die for a mobile phone protective case body and buttons according to claim 1 or 5, characterized in that: The slider body is also provided with a sliding spring, and the lower mold is provided with a limiting component corresponding to the slider body.

7. The dual-color LSR molding die for a mobile phone protective case body and buttons according to claim 1, characterized in that: The bottom of the ejector rod is provided with a rotating shaft, and both ends of the rotating shaft are provided with rollers. Correspondingly, the side wall of the sliding groove is provided with roller guide grooves, and the rollers are adapted to the roller guide grooves.

8. The dual-color LSR molding die for a mobile phone protective case body and buttons according to claim 7, characterized in that: The two ends of the sliding groove pass through the ejector seat, and the top periphery of the ejector seat is provided with a stop block, which blocks the openings at both ends of the sliding groove.

9. The dual-color LSR molding die for a mobile phone protective case body and buttons according to claim 1, characterized in that: The inclined guide post is disposed on the slider bundle block, and both the slider bundle block and the slider body are provided with inclined grooves for the inclined guide post to pass through.

10. A dual-color LSR molding die for a mobile phone protective case body and buttons according to claim 9, characterized in that: The slider body is provided with a first guide surface, and correspondingly, the slider bundle is provided with a second guide surface that matches the first guide surface, and the first guide surface and the second guide surface abut against each other.

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