A mold for molding a light guide

Abstract

The utility model discloses a mould for forming light guide piece, including upper die subassembly, lower die subassembly, the upper die subassembly includes upper die holder, upper die plate, upper die, and the lower die subassembly includes lower die, lower die plate, lower die holder, upper die has two upper cavities, and lower die has two lower cavities, and the upper cavity is adapted with corresponding lower cavity to form the cavity for forming the light guide piece of making, and the left and right sides between upper die plate and lower die plate are provided with core -pulling mechanism, and the core -pulling mechanism includes core block and linkage lever, the core block can be arranged between upper die plate and lower die plate and can move to towards or away from corresponding cavity displacement, the face of core block in horizontal direction and upper die plate contact is inclined plane, the upper end of linkage lever is connected in upper die plate, and the lower end of linkage lever passes through core block and extends into the accommodation slot of lower die plate, it realizes one mould double hole structure, improves the production capacity and production efficiency, realizes the sliding type core -pulling structure design, need not to set up air cylinder, reduces the occupation of space.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a mold for molding light guides. Background Technology

[0002] Molds are various molds and tools used in industrial production to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting or forging, smelting, and stamping. In short, molds are tools used to make shaped objects. These tools are composed of various parts, and different molds are composed of different parts. They mainly achieve the processing of the shape of objects by changing the physical state of the material being molded, and are known as the "mother of industry".

[0003] With the advancement of technology, the requirements for automated injection molding of light guide components are becoming increasingly stringent. Existing light guide components are typically manufactured using injection molding molds. While this method significantly improves production efficiency, current injection molding molds for light guide components generally consist of an upper mold base, upper mold plate, upper mold core, lower mold core, lower mold plate, and lower mold base. The upper and lower mold cores each contain an upper cavity and a lower cavity, respectively. This single-cavity structure allows only one product to be produced at a time, resulting in low production capacity and efficiency. Furthermore, since some existing light guide components emit light from the side, they often have side-extending protrusions, necessitating the inclusion of a core-pulling mechanism in the mold. To ensure smooth core-pulling, a cylinder is typically used to drive the mechanism. While this achieves the core-pulling action, the cylinder requires installation space, increasing the overall mold size. Additionally, the cylinder's susceptibility to failure leads to excessive maintenance and can even shorten the mold's lifespan.

[0004] Therefore, a new technology needs to be developed to solve the above problems. Utility Model Content

[0005] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide a mold for forming light guide components. It realizes a double cavity structure in one mold, which improves production capacity and efficiency. It also realizes a sliding core-pulling structure design, which eliminates the need for cylinders, reduces space occupation, reduces subsequent maintenance, and ensures the service life of the mold.

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

[0007] A mold for forming light guide components includes an upper mold assembly and a lower mold assembly connected to each other; the upper mold assembly includes an upper mold base, an upper mold plate, and an upper mold core arranged sequentially from top to bottom, the upper mold core being embedded in the lower surface of the upper mold plate; the lower mold assembly includes a lower mold core, a lower mold plate, and a lower mold base arranged sequentially from top to bottom, the lower mold core being embedded in the upper surface of the lower mold plate.

[0008] The upper mold core is provided with a glue injection channel, which is located at the center of the upper mold core. The upper mold core has two upper cavities arranged symmetrically along the glue injection channel. The lower mold core has two lower cavities arranged symmetrically. The upper cavities and the corresponding lower cavities are adapted to form a cavity for molding and manufacturing light guide parts.

[0009] Both sides of the upper and lower templates are provided with core-pulling mechanisms, each including a core block and a linkage rod. The core block is movably arranged between the upper and lower templates to move toward or away from the corresponding cavity. The surface of the core block that contacts the upper template in the horizontal direction is an inclined surface, which extends obliquely outward from top to bottom. The upper end of the linkage rod is connected to the upper template, and the lower end of the linkage rod passes through the core block and extends into the clearance groove of the lower template. The linkage rod extends obliquely outward from top to bottom.

[0010] As a preferred embodiment, the upper template is provided with an oblique contact block extending obliquely outward from top to bottom. The oblique contact block is fixedly connected to the upper template by a first locking screw. The oblique contact block has an oblique contact surface extending obliquely outward from top to bottom, and the oblique surface contacts the oblique contact surface.

[0011] As a preferred embodiment, a connecting block is provided between the upper template and the lower template. The connecting block is detachably fixed to the upper template by a second locking screw. The connecting block has a mounting surface that extends obliquely outward from top to bottom, and the mounting surface is oriented towards the core block. The oblique contact block is fixedly connected to the mounting surface by the first locking screw, and the oblique contact surface protrudes outward from the mounting surface.

[0012] As a preferred embodiment, the lower end of the connecting block is provided with a positioning boss, and the lower template is provided with a positioning groove on the outside of the relief groove, and the positioning boss is adapted to the positioning groove.

[0013] As a preferred embodiment, the linkage rod includes a main rod and a limiting head integrally connected to the upper end of the main rod. The peripheral sidewall of the limiting head extends outward to the outer peripheral sidewall of the main rod. The upper template has a through hole extending obliquely outward from top to bottom. A limiting step is provided on the upper side of the through hole. The upper end of the main rod extends into the through hole. The lower end face of the limiting head is restricted by the limiting step. The lower end of the main rod passes through the core block and extends into the clearance groove of the lower template.

[0014] As a preferred embodiment, the core block has several grooves arranged side by side on the side facing the cavity; as the core block moves toward or away from the cavity, the grooves move toward or away from the cavity; the core block has an insert embedded in it, and the side of the groove away from the cavity extends to the side of the insert.

[0015] As a preferred embodiment, both the upper and lower templates are rectangular in shape. The bottom four corners of the upper template are recessed with positioning holes, and sleeves are embedded in the positioning holes. The top four corners of the lower template are protruding with guide posts, and the guide posts are adapted to the corresponding sleeves.

[0016] As a preferred embodiment, both the upper mold core and the lower mold core are rectangular in shape. The four corners of the bottom of the upper mold core are recessed with positioning grooves, and the four corners of the top of the lower mold core are protruding with positioning protrusions. The positioning protrusions are adapted to the corresponding positioning grooves.

[0017] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly involves setting two upper cavities with a symmetrical spacing along the injection channel in the upper mold core and setting two lower cavities with a symmetrical spacing in the lower mold core. The upper cavities and the corresponding lower cavities are matched to form a cavity for molding and manufacturing light guide parts. In this way, it can have two cavities, thereby enabling the molding of two products at one time, realizing a one-mold-two-cavity structure, improving production capacity and efficiency.

[0018] Furthermore, by providing core-pulling mechanisms on both the left and right sides between the upper and lower mold plates, each core-pulling mechanism includes a core block and a linkage rod. The core block is movably arranged between the upper and lower mold plates to move towards or away from the corresponding cavity. The surface of the core block that contacts the upper mold plate in the horizontal direction is an inclined plane, extending obliquely downwards and outwards. The upper end of the linkage rod is connected to the upper mold plate, and the lower end of the linkage rod passes through the core block and extends into the clearance groove of the lower mold plate, extending obliquely downwards and outwards. In this way, the upper mold plate can move upwards, causing the linkage rod to move upwards. The linkage rod then moves the core block. Since the linkage rod extends obliquely outwards, its upward movement causes the core block to move outwards for core pulling. This achieves a sliding core-pulling structure design, eliminating the need for a cylinder, reducing space occupation, reducing subsequent maintenance, and ensuring the service life of the mold.

[0019] To more clearly illustrate the structural features, technical means, and specific objectives and functions of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the overall structure of an embodiment of this utility model;

[0021] Figure 2 This is a cross-sectional schematic diagram of an embodiment of the present utility model;

[0022] Figure 3 This is a three-dimensional structural schematic diagram of the lower mold assembly according to an embodiment of the present utility model;

[0023] Figure 4 This is a partial three-dimensional structural schematic diagram of the lower mold assembly according to an embodiment of the present utility model;

[0024] Figure 5 This is a three-dimensional schematic diagram of the upper mold component according to an embodiment of the present utility model;

[0025] Figure 6 This is a three-dimensional schematic diagram of a light guide component according to an embodiment of the present utility model;

[0026] Figure 7 This is a three-dimensional schematic diagram of the light guide component according to an embodiment of the present utility model.

[0027] Explanation of reference numerals in the attached diagram:

[0028] 10. Upper mold base; 20. Upper template

[0029] 21. Sleeve 22. Perforation

[0030] 23. Limiting step; 30. Upper mold core

[0031] 31. Upper cavity; 32. Positioning groove

[0032] 40. Lower mold core; 41. Lower cavity

[0033] 42. Positioning bump; 50. Lower template

[0034] 51. Guide post; 52. Relief groove

[0035] 53. Positioning groove; 60. Lower mold base

[0036] 70. Support plate assembly; 71. Vertical plate

[0037] 72. Shock-absorbing spring 73. Connecting column

[0038] 74. Upper horizontal panel 75. Lower horizontal panel

[0039] 76. Buffer pad; 80. Core block

[0040] 81. Incline 82. Groove

[0041] 83. Inlay 90. Linkage rod

[0042] 91. Main body rod 92. Limiting head

[0043] 101. Glue injection channel; 102. Angled contact block

[0044] 1021, Angled contact surface; 103, Connecting block

[0045] 1031, Mounting surface; 1032, Positioning boss

[0046] 104. Second locking screw; 105. Light guide component

[0047] 1051, Light-entry surface; 1052, Light-exit surface

[0048] 1053. Extended convex portion. Detailed Implementation

[0049] Please refer to Figures 1 to 7 As shown, it illustrates the specific structure of the mold for forming light guides provided in an embodiment of the present invention.

[0050] The mold for molding light guide components includes an upper mold assembly and a lower mold assembly connected to each other. The upper mold assembly includes an upper mold base 10, an upper template 20, and an upper mold core 30 arranged sequentially from top to bottom, with the upper mold core 30 embedded in the lower surface of the upper template 20. The lower mold assembly includes a lower mold core 40, a lower template 50, and a lower mold base 60 arranged sequentially from top to bottom, with the lower mold core 40 embedded in the upper surface of the lower template 50. The upper mold core 30 is provided with a through-hole injection channel 101, through which the injection channel... The channel 101 is located at the center of the upper mold core 30. The upper mold core 30 has two upper cavities 31 arranged symmetrically along the injection channel 101. The lower mold core 40 has two lower cavities 41 arranged symmetrically. The upper cavities 31 and the corresponding lower cavities 41 are adapted to form a cavity for molding light guide parts. In this way, it can have two cavities, so that two products can be molded at one time, realizing a one-mold-two-cavity structure, improving production capacity and efficiency.

[0051] Both the upper template 20 and the lower template 50 are rectangular in structure. The four corners of the bottom of the upper template 20 are recessed with positioning holes, and sleeves 21 are embedded in the positioning holes. The four corners of the top of the lower template 50 are protruding with guide posts 51, and the guide posts 51 are adapted to the corresponding sleeves 21. Furthermore, both the upper mold core 30 and the lower mold core 40 are rectangular in structure. The four corners of the bottom of the upper mold core 30 are recessed with positioning grooves 32, and the four corners of the top of the lower mold core 40 are protruding with positioning protrusions 42, and the positioning protrusions 42 are adapted to the corresponding positioning grooves 32. This facilitates the mutual cooperation between the upper mold core 30 and the lower mold core 40.

[0052] A support plate assembly 70 is provided between the lower template 50 and the lower mold base 60. The support plate assembly 70 includes two vertical plates 71, two horizontal plates, a shock-absorbing spring 72, and a connecting column 73. The two vertical plates 71 are symmetrically arranged with a vertical front-to-back spacing. The two horizontal plates are stacked vertically and located between the front-to-back spacing of the two vertical plates 71. The two horizontal plates are locked together by positioning screws. One end of the connecting column 73 passes through the upper horizontal plate, extends into the lower template 50, and extends to the upper surface of the lower template 50. The other end is flush with the lower surface of the upper horizontal plate. The shock-absorbing spring 72 is sleeved on the connecting column 73. One end of the shock-absorbing spring 72 abuts against the lower template 50, and the other end abuts against the upper horizontal plate. Here, the design of the support plate assembly 70 with the shock-absorbing spring 72 improves its shock absorption capacity, strengthens the overall structural strength, enables it to withstand greater impact forces, and further extends its service life.

[0053] The lower template 50, lower mold base 60, and two vertical plates 71 form a buffer space, and the two horizontal plates are located within the buffer space. The two horizontal plates are an upper horizontal plate 74 and a lower horizontal plate 75, respectively. One end of the connecting column 73 passes through the upper horizontal plate 74, extends into the lower template 50, and extends to the upper surface of the lower template 50. The other end is flush with the lower surface of the upper horizontal plate 74. One end of the shock-absorbing spring 72 abuts against the lower template 50, and the other end abuts against the upper horizontal plate 74.

[0054] The lower transverse plate 75 and the lower mold base 60 are spaced apart, and a buffer pad 76 is provided between the lower transverse plate 75 and the lower mold base 60. The buffer pad 76 further enhances the cushioning capacity. The buffer pad 76 can be secured to the lower surface of the lower transverse plate 75 with locking screws. The buffer pad 76 protrudes from the lower surface of the lower transverse plate 75, and its lower surface is constrained by the upper surface of the lower mold base 60. Thus, the buffer pad 76 can be securely connected to the lower transverse plate 75 using locking screws.

[0055] Core-pulling mechanisms are provided on both the left and right sides between the upper template 20 and the lower template 50. Each core-pulling mechanism includes a core block 80 and a linkage rod 90. The core block 80 is movably arranged between the upper template 20 and the lower template 50 to move towards or away from the corresponding cavity. The surface of the core block 80 that contacts the upper template 20 in the horizontal direction is an inclined surface 81, which extends obliquely outward from top to bottom. The upper end of the linkage rod 90 is connected to the upper template 20, and the lower end of the linkage rod 90 passes through the core block 80 and extends into the clearance groove 52 of the lower template 50. The upper mold plate 20 is provided with an inclined contact block 102 extending obliquely outward from top to bottom. The inclined contact block 102 is fixedly connected to the upper mold plate 20 by a first locking screw. The inclined contact block 102 has an inclined contact surface 1021 extending obliquely outward from top to bottom. The inclined surface 81 contacts the inclined contact surface 1021. In this way, the core block 80 and the inclined contact block 102 can be mutually pushed against each other. And, after the inclined contact block 102 is worn too much, it can be disassembled and replaced by the first locking screw. Here, when the mold is opened, the upper mold plate 20 moves upward, which drives the inclined contact block 102 to move upward to make room for the core block 80. The upward movement of the upper mold plate 20 drives the linkage rod 90 to move upward. The linkage rod 90 drives the core block 80 to move. Since the linkage rod 90 extends obliquely outward, when the linkage rod 90 moves upward, it drives the core block 80 to move outward for core pulling.

[0056] A connecting block 103 is provided between the upper template 20 and the lower template 50. The connecting block 103 is detachably fixed to the upper template 20 by a second locking screw 104. The connecting block 103 has a mounting surface 1031 that extends obliquely outward from top to bottom. The mounting surface 1031 is positioned facing the core block 80. The oblique contact block 102 is fixedly connected to the mounting surface 1031 by the first locking screw. The oblique contact surface 1021 protrudes out of the mounting surface 1031. Thus, when the oblique contact block 102 and the connecting block 103 are worn excessively, they can be disassembled and replaced by the first locking screw and the second locking screw 104.

[0057] The lower end of the connecting block 103 is provided with a positioning boss 1032, and the lower template 50 is provided with a positioning groove 53 on the outside of the relief groove 52. The positioning boss 1032 and the positioning groove 53 are adapted to each other, which is more conducive to the mutual positioning and cooperation between the connecting block 103 and the lower template 50.

[0058] The linkage rod 90 includes a main rod 91 and a limiting head 92 integrally connected to the upper end of the main rod 91. The peripheral sidewall of the limiting head 92 extends outward to the outside of the peripheral sidewall of the main rod 91. The upper template 20 is provided with a through hole 22 extending obliquely outward from top to bottom. A limiting step 23 is provided on the upper side of the through hole 22. The upper end of the main rod 91 extends into the through hole. The lower end face of the limiting head 92 is restricted by the limiting step 23. The lower end of the main rod 91 passes through the core block 80 and extends into the relief groove 52 of the lower template 50.

[0059] The core block 80 has several grooves 82 arranged side by side on the side facing the cavity; as the core block 80 moves toward or away from the cavity, the grooves 82 move toward or away from the cavity; the core block 80 has an insert 83 embedded in it, and the side of the groove 82 away from the cavity extends to the side of the insert 83; here, when the light-emitting surface of the light guide needs to be textured, the corresponding insert 83 structure can be designed according to the processing requirements.

[0060] like Figure 6 and Figure 7 As shown, the light guide 105 provided in this embodiment has a light-inlet surface 1051 located on the lower side and a light-outlet surface 1052 located on the upper side. The light-outlet surface 1052 is formed on an extension protrusion 1053, which is formed by the groove 82.

[0061] In summary, the key design feature of this utility model lies in its use of two upper cavities arranged symmetrically along the injection channel in the upper mold core, and two lower cavities arranged symmetrically in the lower mold core. These upper and lower cavities are fitted together to form a cavity for molding light guide components. This allows for the production of two products in a single molding process, achieving a dual-cavity structure and improving production capacity and efficiency. Furthermore, the invention incorporates core-pulling mechanisms on both sides between the upper and lower mold plates. These mechanisms, including core blocks and linkage rods, allow the core blocks to be movably positioned between the upper and lower mold plates. The core block is oriented towards or away from the corresponding cavity displacement, making the surface of the core block in contact with the upper mold plate in the horizontal direction an inclined plane. The inclined plane extends diagonally downwards and outwards. The upper end of the linkage rod is connected to the upper mold plate, and the lower end of the linkage rod passes through the core block and extends into the relief groove of the lower mold plate, so that the linkage rod extends diagonally downwards and outwards. In this way, the upper mold plate can move upwards, driving the linkage rod to move upwards. The linkage rod moves the core block in conjunction with the upper mold plate. Since the linkage rod extends diagonally outwards, when the linkage rod moves upwards, it drives the core block to move outwards for core pulling. This achieves a sliding core pulling structure design, eliminating the need for a cylinder, reducing space occupation, reducing subsequent maintenance, and ensuring the service life of the mold.

[0062] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A mold for forming a light guide component, comprising an upper mold assembly and a lower mold assembly connected to each other; the upper mold assembly includes an upper mold base, an upper mold plate, and an upper mold core arranged sequentially from top to bottom, the upper mold core being embedded in the lower surface of the upper mold plate; the lower mold assembly includes a lower mold core, a lower mold plate, and a lower mold base arranged sequentially from top to bottom, the lower mold core being embedded in the upper surface of the lower mold plate; characterized in that: The upper mold core is provided with a glue injection channel, which is located at the center of the upper mold core. The upper mold core has two upper cavities arranged symmetrically along the glue injection channel. The lower mold core has two lower cavities arranged symmetrically. The upper cavities and the corresponding lower cavities are adapted to form a cavity for molding and manufacturing light guide parts. Both sides of the upper and lower templates are provided with core-pulling mechanisms, each including a core block and a linkage rod. The core block is movably arranged between the upper and lower templates to move toward or away from the corresponding cavity. The surface of the core block that contacts the upper template in the horizontal direction is an inclined surface, which extends obliquely outward from top to bottom. The upper end of the linkage rod is connected to the upper template, and the lower end of the linkage rod passes through the core block and extends into the clearance groove of the lower template. The linkage rod extends obliquely outward from top to bottom.

2. The mold for forming light guide components according to claim 1, characterized in that: The upper template is provided with an oblique contact block extending obliquely outward from top to bottom. The oblique contact block is fixedly connected to the upper template by a first locking screw. The oblique contact block has an oblique contact surface extending obliquely outward from top to bottom, and the oblique surface is in contact with the oblique contact surface.

3. A mold for forming light guide components according to claim 2, characterized in that: A connecting block is provided between the upper template and the lower template. The connecting block is detachably fixed to the upper template by a second locking screw. The connecting block has a mounting surface that extends obliquely outward from top to bottom. The mounting surface faces the core block. The oblique contact block is fixed to the mounting surface by the first locking screw. The oblique contact surface protrudes outward from the mounting surface.

4. A mold for forming light guide components according to claim 3, characterized in that: The lower end of the connecting block is provided with a positioning boss, and the lower template is provided with a positioning groove on the outside of the relief groove. The positioning boss is adapted to the positioning groove.

5. A mold for forming light guide components according to claim 1, characterized in that: The linkage rod includes a main rod and a limiting head integrally connected to the upper end of the main rod. The peripheral sidewall of the limiting head extends outward to the outside of the peripheral sidewall of the main rod. The upper template has a through hole extending obliquely outward from top to bottom. A limiting step is provided on the upper side of the through hole. The upper end of the main rod extends into the through hole. The lower end face of the limiting head is restricted by the limiting step. The lower end of the main rod passes through the core block and extends into the relief groove of the lower template.

6. A mold for forming light guide components according to claim 1, characterized in that: The core block has several grooves arranged side by side on the side facing the cavity; as the core block moves toward or away from the cavity, the grooves move toward or away from the cavity; the core block has an insert embedded in it, and the side of the groove away from the cavity extends to the side of the insert.

7. A mold for forming light guide components according to claim 1, characterized in that: Both the upper and lower templates are rectangular in shape. The bottom four corners of the upper template are recessed with positioning holes, and sleeves are embedded in the positioning holes. The top four corners of the lower template are protruding with guide posts, and the guide posts are adapted to the corresponding sleeves.

8. A mold for forming light guide components according to claim 1, characterized in that: Both the upper mold core and the lower mold core are rectangular in shape. The four corners of the bottom of the upper mold core are recessed with positioning grooves, and the four corners of the top of the lower mold core are protruding with positioning protrusions. The positioning protrusions are adapted to the corresponding positioning grooves.

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