A forming die for an automobile rearview mirror inner cover

Abstract

This utility model relates to a molding die for an inner cover of an automotive rearview mirror, comprising a moving mold assembly and a fixed mold assembly arranged front to rear and cooperating with each other. The moving mold assembly includes a moving module, a flow divider fixed to the front of the moving module, a feed plate fixed to the front of the flow divider, and a moving mold core embedded at the rear of the moving module. The fixed mold assembly includes a fixed module, a base plate fixed to the rear of the fixed module, an ejection mechanism disposed between the base plate and the fixed module, and a fixed mold core embedded at the front of the fixed module and cooperating with the moving mold core. A first composite core-pulling assembly and a second composite core-pulling assembly are also provided between the moving module and the fixed module, respectively distributed to the left and right. A first passive core-pulling assembly is also provided between the moving module and the fixed module, located to the left of the fixed mold core. This utility model can form all assembly surfaces with different orientations in one go, eliminating the need for additional core-pulling cylinders to reduce mold manufacturing costs and simplifying the demolding process to shorten demolding time.

Description

Technical Field

[0001] This utility model relates to a molding die for the inner cover of a car rearview mirror. Background Technology

[0002] The rearview mirror inner cover refers to the protective cover installed inside the rearview mirror frame. It is usually used to prevent direct sunlight and reduce scratches and damage, and has both protective and decorative functions. Since the rearview mirror inner cover is basically made of plastic, its production process relies on matching molding molds and injection molding machines.

[0003] Because the assembly surfaces on the outer wall of the inner cover of the rearview mirror have different orientations and directions, the existing core-pulling blocks of the molding mold only have the function of unidirectional reciprocating movement. Therefore, they cannot meet the needs of assembly surface forming and cannot form all the assembly surfaces with different orientations at one time. It is necessary to add a large number of core-pulling cylinders from the inside to achieve this, but this results in high mold manufacturing costs and a more complicated demolding process, which in turn leads to a longer demolding time. Further improvements are needed. Utility Model Content

[0004] In view of the current state of the prior art, the technical problem to be solved by this utility model is to provide a molding mold for the inner cover of a car rearview mirror that reduces the cost of mold making and simplifies the demolding steps to shorten the demolding time.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a molding die for an inner cover of a car rearview mirror, comprising a moving mold assembly and a fixed mold assembly respectively arranged front and rear and cooperating with each other. The moving mold assembly includes a moving module, a flow divider block fixed to the front side of the moving module, a feed plate fixed to the front side of the flow divider block, and a moving mold core embedded in the rear side of the moving module; the fixed mold assembly includes a fixed module, a base plate fixed to the rear side of the fixed module, an ejection mechanism disposed between the base plate and the fixed module, and a fixed mold core embedded in the front side of the fixed module and cooperating with the moving mold core, characterized in that:

[0006] The moving mold core has a main cavity on its end face. Correspondingly, the fixed mold core has an inner core protrusion on its end face facing the moving mold core. The bottom surface of the main cavity and the left edge of the bottom outer wall of the moving mold core are provided with a first and a second inclined groove, which are respectively distributed vertically. The bottom surface of the main cavity and the right edge of the bottom outer wall of the moving mold core are provided with a third inclined groove.

[0007] The moving module and the fixed module are further provided with a first composite core-pulling assembly and a second composite core-pulling assembly distributed on the left and right respectively. The first composite core-pulling assembly includes a first core-pulling cylinder fixed on the outer wall of the left side of the fixed module, a first slider movably connected to the front side of the fixed module to have the function of left and right translation and located on the left side of the fixed mold core, and a first auxiliary forming block and a second auxiliary forming block movably inserted into the first inclined groove and the second inclined groove respectively. The telescopic end of the first core-pulling cylinder is arranged laterally to the right and fixed on the first slider. The front sides of the first auxiliary forming block and the second auxiliary forming block are movably connected to the first slider to have the function of forward and backward tilting movement.

[0008] The second composite core-pulling assembly includes a second core-pulling cylinder fixed on the outer wall of the right side of the fixed module, a second slider movably connected to the front side of the fixed module to have left and right translation function and located to the right of the fixed mold core, and a third auxiliary forming block movably inserted into the third inclined groove. The telescopic end of the second core-pulling cylinder is arranged laterally to the left and fixed on the second slider. The front side of the third auxiliary forming block is movably connected to the second slider to have the function of forward and backward tilting movement.

[0009] Preferably, a first extension block is formed outward from the rear side of the first auxiliary molding block, and a first molding surface is formed at the end of the first extension block to cooperate with the outer wall of the inner core protrusion. A plurality of first ribs are formed outward from the first molding surface at equal intervals from left to right.

[0010] Preferably, a second extension block is formed outward from the rear side of the second auxiliary forming block, and a second forming curved surface is formed at the end of the second extension block to cooperate with the outer wall of the inner core protrusion. A plurality of second ribs are formed outward from the second forming curved surface and are arranged at equal intervals from left to right.

[0011] Preferably, a third extension block is formed outward from the rear side of the third auxiliary molding block, and the end of the third extension block is formed with a third molding surface that cooperates with the outer wall of the inner core protrusion.

[0012] Preferably, a first passive core-pulling assembly is provided between the moving module and the fixed module, located to the left of the fixed mold core. The first passive core-pulling assembly includes a third slider movably connected to the front of the fixed module to have a left and right lateral movement function and located behind the first composite core-pulling assembly, a first guide block fixed on the third slider, a first side forming block movably connected to the first guide block to have a left and right tilting movement function, and a first traction post obliquely interspersed in the third slider and the first guide block. The front end of the first traction post is fixed on the moving module.

[0013] Preferably, the moving module and the fixed module are further provided with two second passive core-pulling assemblies symmetrically located above and below the fixed mold core, respectively. The second passive core-pulling assembly includes a fourth slider movably connected to the front side of the fixed module to have the function of vertical movement, a second guide block fixed on the fourth slider, a second side forming block movably connected to the second guide block to have the function of tilting left and right, and a second traction post obliquely inserted in the fourth slider and the second guide block. The front end of the second traction post is fixed on the moving module.

[0014] Preferably, a fourth extension block is formed outward on the side of the first side forming block facing the fixed mold core, and a fourth forming curved surface is formed at the end corner of the fourth extension block to cooperate with the outer wall of the inner core protrusion. A plurality of first forming protrusions are formed outward on the fourth forming curved surface.

[0015] Preferably, a fifth extension block is formed outward on the side of the second side forming block facing the fixed mold core, and a fifth forming curved surface is formed at the end corner of the fifth extension block to cooperate with the outer wall of the inner core protrusion. A plurality of second forming protrusions are formed outward on the fifth forming curved surface.

[0016] Compared with the prior art, the advantages of this utility model are as follows: This utility model combines active core pulling and passive core pulling methods by means of a first composite core pulling component and a second composite core pulling component, thereby enabling the core pulling process to have a two-stage steering function to adapt to the needs of assembly surface forming. Thus, all assembly surfaces with different directions can be formed at one time. This eliminates the need to install a number of core pulling cylinders to reduce mold manufacturing costs and simplifies the demolding steps to shorten demolding time. Attached Figure Description

[0017] The above and other features, advantages, and aspects of the embodiments of this application will become more apparent when taken in conjunction with the accompanying drawings and the following detailed description; throughout the drawings, the same or similar reference numerals denote the same or similar elements; it should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale; in the drawings:

[0018] Figure 1 This is an exploded view of the right front side of this utility model;

[0019] Figure 2 This is a structural diagram of the left rear side of the moving mold core of this utility model;

[0020] Figure 3 This is a structural diagram of the right front side of the fixed module of this utility model;

[0021] Figure 4 This is an exploded view of the left rear side of the second composite core-pulling assembly of this utility model;

[0022] Figure 5This is an exploded view of the left rear side of the first composite core-pulling assembly of this utility model;

[0023] Figure 6 This is an exploded view of the right front side of the second passive core-pulling assembly of this utility model;

[0024] Figure 7 This is an exploded view of the right front side of the first passive core-pulling assembly of this utility model. Detailed Implementation

[0025] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0027] like Figures 1-7 As shown, a molding die for an inner cover of a car rearview mirror includes a moving mold assembly and a fixed mold assembly arranged at the front and rear of the car and cooperating with each other. The moving mold assembly includes a moving module 1, a flow divider block 5 fixed to the front side of the moving module 1, a feed plate 6 fixed to the front side of the flow divider block 5, and a moving mold core 3 embedded in the rear side of the moving module 1. The fixed mold assembly includes a fixed module 2, a base plate 7 fixed to the rear side of the fixed module 2, an ejection mechanism 8 disposed between the base plate 7 and the fixed module 2, and a fixed mold core 4 embedded in the front side of the fixed module 2 and cooperating with the moving mold core 3.

[0028] A main cavity 31 is provided on the end face of the moving mold core 3. Correspondingly, an inner core protrusion 41 is formed on the end face of the fixed mold core 4 in the direction of the moving mold core 3. A first inclined groove 35 and a second inclined groove 34 are respectively distributed vertically between the bottom surface of the main cavity 31 and the left edge of the bottom outer wall of the moving mold core 3. A third inclined groove 33 is provided between the bottom surface of the main cavity 31 and the right edge of the bottom outer wall of the moving mold core 3.

[0029] Between the moving module 1 and the fixed module 2, there are also a first composite core-pulling assembly 10 and a second composite core-pulling assembly 9 distributed on the left and right respectively. The first composite core-pulling assembly 10 includes a first core-pulling cylinder 101 fixed on the outer wall of the left side of the fixed module 2, a first slider 102 movably connected to the front side of the fixed module 2 to have the function of left and right translation and located on the left side of the fixed mold core 4, and a first auxiliary forming block 103 and a second auxiliary forming block 104 movably inserted into the first inclined groove 35 and the second inclined groove 34 respectively. The telescopic end of the first core-pulling cylinder 101 is arranged laterally to the right and fixed on the first slider 102. The front sides of the first auxiliary forming block 103 and the second auxiliary forming block 104 are movably connected to the first slider 102 to have the function of forward and backward tilting movement.

[0030] The second composite core-pulling assembly 9 includes a second core-pulling cylinder 91 fixed on the outer wall of the right side of the fixed module 2, a second slider 92 movably connected to the front side of the fixed module 2 to have left and right translation function and located to the right of the fixed mold core 4, and a third auxiliary molding block 93 movably inserted into the third inclined groove 33. The telescopic end of the second core-pulling cylinder 91 is set laterally to the left and fixed on the second slider 92. The front side of the third auxiliary molding block 93 is movably connected to the second slider 92 to have the function of tilting forward and backward.

[0031] The rear side of the first auxiliary forming block 103 has a first extension block 1031 formed outward. The end of the first extension block 1031 has a first forming surface 1032 that cooperates with the outer wall of the inner core protrusion 41. Multiple first ribs 1033 are formed outward from left to right at equal intervals on the first forming surface 1032.

[0032] The rear side of the second auxiliary forming block 104 has a second extension block 1041 formed outward. The end of the second extension block 1041 has a second forming surface 1042 that cooperates with the outer wall of the inner core protrusion 41. Multiple second ribs 1043 are formed outward from left to right at equal intervals on the second forming surface 1042.

[0033] The rear side of the third auxiliary molding block 93 forms a third extension block 931, and the end of the third extension block 931 forms a third molding surface 932 that cooperates with the outer wall of the inner core protrusion 41.

[0034] A first passive core-pulling assembly 12 is also provided between the moving module 1 and the fixed module 2, located to the left of the fixed mold core 4. The first passive core-pulling assembly 12 includes a third slider 121 movably connected to the front of the fixed module 2 to have the function of left and right lateral movement and located behind the first composite core-pulling assembly 10, a first guide block 122 fixed on the third slider 121, a first side forming block 123 movably connected to the first guide block 122 to have the function of left and right tilting movement, and a first traction post 124 obliquely intersected in the third slider 121 and the first guide block 122. The front end of the first traction post 124 is fixed on the moving module 1.

[0035] A fourth extension block 1231 is formed outward on the side of the first side forming block 123 facing the fixed mold core 4. A fourth forming curved surface 1232 is formed at the end corner of the fourth extension block 1231, which cooperates with the outer wall of the inner core protrusion 41. Several first forming protrusions 1233 are formed outward on the fourth forming curved surface 1232.

[0036] Two second passive core-pulling assemblies 11 are also provided between the moving module 1 and the fixed module 2, respectively symmetrically located above and below the fixed mold core 4. The second passive core-pulling assembly 11 includes a fourth slider 111 movably connected to the front side of the fixed module 2 to have the function of vertical movement, a second guide block 112 fixed on the fourth slider 111, a second side forming block 113 movably connected to the second guide block 112 to have the function of tilting left and right, and a second traction post 114 obliquely inserted in the fourth slider 111 and the second guide block 112. The front end of the second traction post 114 is fixed on the moving module 1.

[0037] A fifth extension block 1131 is formed outward on the side of the second side forming block 113 facing the fixed mold core 4. A fifth forming curved surface 1132 is formed at the end corner of the fifth extension block 1131, which cooperates with the outer wall of the inner core protrusion 41. Several second forming protrusions 1133 are formed outward on the fifth forming curved surface 1132.

[0038] A positioning recess 32 is also provided on the bottom surface of the main cavity 31. Correspondingly, a positioning boss 42 that cooperates with the positioning recess 32 is formed on the outer wall of the inner core protrusion 41 in the direction of the moving mold core 3.

[0039] Working principle:

[0040] The feed plate 6 in the moving mold assembly and the base plate 7 in the fixed mold assembly are respectively installed on the action mechanism and the machine body of the injection molding machine. The action mechanism drives the feed plate 6 to move backward, and then the flow divider 5 drives the moving module 1 to move backward and towards the fixed module 2 until the two are joined together (existing technology). At the same time, the end face of the moving mold core 3 and the end face of the fixed mold core 4 are joined together, and then the inner core protrusion 41 extends into the positioning cavity 32.

[0041] Then, the telescopic end of the first core-pulling cylinder 101 in the first composite core-pulling assembly 10 is driven to extend outward to drive the first slider 102 to move to the right, thereby driving the first auxiliary molding block 103 and the second auxiliary molding block 104 to move in an inclined direction toward the fixed mold core 4 along the first inclined groove 35 and the second inclined groove 34, so that the ends of the first extension block 1031 and the second extension block 1041 extend into the space between the inner core protrusion 41 and the positioning cavity 32.

[0042] At the same time, the telescopic end of the second core-pulling cylinder 91 in the second composite core-pulling assembly 9 is driven to extend outward to drive the second slider 92 to move to the left, thereby driving the third auxiliary molding block 93 to move tilted along the third inclined groove 33 toward the fixed mold core 4, so that the third extension block 931 extends into the space between the inner core protrusion 41 and the positioning cavity 32.

[0043] During the movement, the moving module 1 will drive the first traction column 124 in the first passive core pulling assembly 12 and the second traction column 114 in each of the second passive core pulling assemblies 11 to move backward, thereby forcing the third slider 121 and each of the fourth sliders 111 to move towards the fixed mold core 4, thereby forcing the first side molding block 123 and each of the second side molding blocks 113 to tilt and move towards the fixed mold core 4, thereby causing the end of the fourth extension block 1231 on the first side molding block 123 and the end of the fifth extension block 1131 on each of the second side molding blocks 113 to extend into the space between the inner core protrusion 41 and the positioning cavity 32.

[0044] Subsequently, the molten material enters the space between the inner core protrusion 41 and the positioning cavity 32 through the gate in the feed plate 6 and the runner in the diverter block 5. After cooling, it forms the inner cover of the rearview mirror (existing technology). Then, the telescopic ends of the first core-pulling cylinder 101 and the second core-pulling cylinder 91 are driven to retract inward, so that the first auxiliary molding block 103, the second auxiliary molding block 104 and the third auxiliary molding block 93 are reversed and reset in the same way. Then, the feed plate 6 is driven to move forward by the action mechanism, and then the moving module 1 and the moving mold core 3 are driven to move forward by the diverter block 5 and move away from the fixed module 2 and the fixed mold core 4 respectively. Finally, the inner cover of the rearview mirror is ejected forward by the ejection mechanism 8 (existing technology).

[0045] This invention combines active and passive core-pulling methods by using a first composite core-pulling component 10 and a second composite core-pulling component 9, thereby enabling the core-pulling process to have a two-stage steering function to adapt to the needs of assembly surface forming. This allows all assembly surfaces with different directions to be formed at once, eliminating the need to install additional core-pulling cylinders to reduce mold manufacturing costs and simplifying the demolding steps to shorten demolding time.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A molding die for an inner cover of an automotive rearview mirror, comprising a moving mold assembly and a fixed mold assembly respectively arranged front to rear and cooperating with each other; the moving mold assembly includes a moving module, a flow divider fixed to the front side of the moving module, a feed plate fixed to the front side of the flow divider, and a moving mold core embedded in the rear side of the moving module; the fixed mold assembly includes a fixed module, a base plate fixed to the rear side of the fixed module, an ejection mechanism disposed between the base plate and the fixed module, and a fixed mold core embedded in the front side of the fixed module and cooperating with the moving mold core, characterized in that: The moving mold core has a main cavity on its end face. Correspondingly, the fixed mold core has an inner core protrusion on its end face facing the moving mold core. The bottom surface of the main cavity and the left edge of the bottom outer wall of the moving mold core are provided with a first and a second inclined groove, which are respectively distributed vertically. The bottom surface of the main cavity and the right edge of the bottom outer wall of the moving mold core are provided with a third inclined groove. The moving module and the fixed module are further provided with a first composite core-pulling assembly and a second composite core-pulling assembly distributed on the left and right respectively. The first composite core-pulling assembly includes a first core-pulling cylinder fixed on the outer wall of the left side of the fixed module, a first slider movably connected to the front side of the fixed module to have the function of left and right translation and located on the left side of the fixed mold core, and a first auxiliary forming block and a second auxiliary forming block movably inserted into the first inclined groove and the second inclined groove respectively. The telescopic end of the first core-pulling cylinder is arranged laterally to the right and fixed on the first slider. The front sides of the first auxiliary forming block and the second auxiliary forming block are movably connected to the first slider to have the function of forward and backward tilting movement. The second composite core-pulling assembly includes a second core-pulling cylinder fixed on the outer wall of the right side of the fixed module, a second slider movably connected to the front side of the fixed module to have left and right translation function and located to the right of the fixed mold core, and a third auxiliary forming block movably inserted into the third inclined groove. The telescopic end of the second core-pulling cylinder is arranged laterally to the left and fixed on the second slider. The front side of the third auxiliary forming block is movably connected to the second slider to have the function of forward and backward tilting movement.

2. The molding die for the inner cover of a car rearview mirror according to claim 1, characterized in that, The rear side of the first auxiliary forming block has a first extension block formed outward, and the end of the first extension block has a first forming curved surface that cooperates with the outer wall of the inner core protrusion. Multiple first ribs are formed outward from left to right at equal intervals on the first forming curved surface.

3. The molding die for the inner cover of a car rearview mirror according to claim 1, characterized in that, The rear side of the second auxiliary forming block has a second extension block formed outward, and the end of the second extension block has a second forming curved surface that cooperates with the outer wall of the inner core protrusion. Multiple second ribs are formed outward from left to right at equal intervals on the second forming curved surface.

4. The molding die for the inner cover of a car rearview mirror according to claim 1, characterized in that, The rear side of the third auxiliary forming block has a third extension block formed outward, and the end of the third extension block has a third forming surface that cooperates with the outer wall of the inner core protrusion.

5. The molding die for the inner cover of a car rearview mirror according to claim 1, characterized in that, A first passive core-pulling assembly is also provided between the moving module and the fixed module, located to the left of the fixed mold core. The first passive core-pulling assembly includes a third slider that is movably connected to the front of the fixed module to have a left and right lateral movement function and is located behind the first composite core-pulling assembly, a first guide block fixed on the third slider, a first side forming block that is movably connected to the first guide block to have a left and right tilting movement function, and a first traction post that is obliquely interspersed in the third slider and the first guide block. The front end of the first traction post is fixed on the moving module.

6. The molding die for the inner cover of a car rearview mirror according to claim 1, characterized in that, The moving module and the fixed module are further provided with two second passive core-pulling assemblies symmetrically located above and below the fixed mold core, respectively. The second passive core-pulling assembly includes a fourth slider movably connected to the front side of the fixed module to have the function of vertical movement, a second guide block fixed on the fourth slider, a second side forming block movably connected to the second guide block to have the function of tilting left and right, and a second traction column obliquely inserted in the fourth slider and the second guide block. The front end of the second traction column is fixed on the moving module.

7. The molding die for an inner cover of a car rearview mirror according to claim 5, characterized in that, A fourth extension block is formed outward on the side of the first side forming block facing the fixed mold core. A fourth forming curved surface is formed at the end corner of the fourth extension block, which cooperates with the outer wall of the inner core protrusion. Several first forming protrusions are formed outward on the fourth forming curved surface.

8. The molding die for an inner cover of a car rearview mirror according to claim 6, characterized in that, A fifth extension block is formed outward on the side of the second side forming block facing the fixed mold core. A fifth forming curved surface is formed at the end corner of the fifth extension block, which cooperates with the outer wall of the inner core protrusion. Several second forming protrusions are formed outward on the fifth forming curved surface.

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