Injection mold for a lower mirror housing of an automobile rearview mirror

Abstract

The utility model relates to an injection mold of automobile rear -view mirror lower mirror shell, including respectively front and rear arrangement and mutually cooperate's mobile mould frame and fixed mould frame, mobile mould frame includes initiative module, fixed in initiative module front side's shunt module and the feed template of vertical fixed in shunt module front side, fixed mould frame includes shaping module, the base template of vertical in shaping module rear, and the top material unit of being arranged in base template with shaping module, still be equipped with two upper and lower symmetry distribution's forming module group between mobile mould frame and fixed mould frame, and forming module group includes the dynamic die core of embedding in initiative module rear side inside, and the fixed die core of embedding in shaping module front side inside and with dynamic die core each other cooperation, the utility model has simplified the processing to reduced manufacturing cost, and still reduced use cost.

Description

Technical Field

[0001] This utility model relates to an injection mold for the lower housing of a car rearview mirror. Background Technology

[0002] The lower mirror housing is the outer shell component of a car rearview mirror, used to protect internal electronic components and enhance the aesthetics. Since the lower mirror housing is usually made of plastic, its manufacturing depends on matching molds and corresponding injection molding machines.

[0003] Since the part of the rearview mirror housing connected to the rotating mechanism needs to be formed with two arc-shaped slots set one above the other, the core-pulling blocks used to form the two arc-shaped slots in the existing injection molds are mostly one-piece structures, which are complicated to process and have high manufacturing costs. In addition, once wear or damage occurs, the whole thing can only be replaced, so the cost of use is also high. Therefore, 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 an injection mold for the lower mirror housing of a car rearview mirror that simplifies the processing to reduce manufacturing costs and also reduces usage costs.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problem is as follows: an injection mold for a lower mirror housing of an automobile rearview mirror, comprising a movable mold frame and a fixed mold frame respectively arranged front and rear and cooperating with each other; the movable mold frame includes an active module, a flow distribution module fixed to the front side of the active module, and a feeding template vertically fixed to the front side of the flow distribution module; the fixed mold frame includes a shaping module, a base template vertically arranged behind the shaping module, and an ejector unit arranged between the base template and the shaping module, characterized in that:

[0006] Two symmetrically distributed molding modules are provided between the movable mold frame and the fixed mold frame. The molding module includes a movable mold core embedded in the rear side of the active module and a fixed mold core embedded in the front side of the shaping module and cooperating with the movable mold core.

[0007] A triangular cavity is formed on the end face of the moving mold core, and correspondingly, a triangular protrusion that cooperates with the triangular cavity is formed on the end face of the fixed mold core in the direction of the moving mold core.

[0008] A fan-shaped notch is provided at the right corner of the triangular convex bulge. Correspondingly, a fan-shaped protrusion is formed at the right corner of the triangular concave cavity in the direction of the fixed mold core, which cooperates with the fan-shaped notch.

[0009] The molding module further includes a slot molding assembly, which includes a first core-pulling block movably connected to the front of the shaping module to have left and right tilting movement function and located to the right of the fixed mold core, a first traction rod obliquely inserted in the first core-pulling block, and a first slot molding strip and a second slot molding strip detachably fixed on the first core-pulling block facing the fixed mold core. The ends of the first slot molding strip and the second slot molding strip are both set towards the right corner of the triangular protrusion and both cooperate with the fan-shaped notch. The front end of the first traction rod is fixed to the rear of the active module.

[0010] Preferably, the molding module further includes a flanging forming component, which includes a second core-pulling block movably connected to the front of the shaping module to have left and right translation function and located to the right of the mold core, at least one second traction rod obliquely inserted in the second core-pulling block and arranged in parallel from top to bottom, and a flanging forming block fixed on the second core-pulling block facing the mold core. The side of the flanging forming block facing the triangular convex hull cooperates with the right outer wall of the triangular convex hull. The front end of each second traction rod is fixed to the rear of the active module.

[0011] Preferably, an inclined notch is provided at the rear corner of the end of the first slot forming strip, and an inclined forming slope is formed at the rear edge of the opening of the notch.

[0012] Preferably, an arc-shaped notch is formed at the corner of the end of the second slot forming strip facing the first slot forming strip, and an arc-shaped rib is formed outward on the inner wall of the arc-shaped notch.

[0013] Preferably, the front and rear edges of the flanged forming block facing a corner of the triangular convex bulge are respectively provided with a first arc-shaped limiting groove and a second arc-shaped limiting groove.

[0014] Compared with the prior art, the advantages of this utility model are as follows: In this utility model, the first slot forming strip and the second slot forming strip used to form two arc-shaped slots are both fixed to the first core-pulling block in a detachable manner, thereby realizing a split assembly structure, which simplifies the processing process and reduces manufacturing costs. Moreover, once wear or damage occurs, only the first slot forming strip or the second slot forming strip needs to be replaced, thus reducing the cost of use. Attached Figure Description

[0015] 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:

[0016] Figure 1 This is an exploded view of the right front side of this utility model;

[0017] Figure 2 This is a structural diagram of the right front side of the fixed mold core of this utility model;

[0018] Figure 3 This is a structural diagram of the left rear side of the moving mold core of this utility model;

[0019] Figure 4 This is a structural diagram of the right front side of the flange forming component of this utility model;

[0020] Figure 5 This is a structural diagram of the left rear side of the flange forming component of this utility model;

[0021] Figure 6 This is a structural diagram of the front right side of the slot forming assembly of this utility model;

[0022] Figure 7 This is a structural diagram of the left rear side of the slot forming component of this utility model. Detailed Implementation

[0023] 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.

[0024] 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.

[0025] like Figures 1-7As shown, an injection mold for a rearview mirror housing of an automobile includes a movable mold frame 1 and a fixed mold frame 2, which are respectively arranged in front of and behind each other and cooperate with each other. The movable mold frame 1 includes an active module 11, a flow distribution module 12 fixed to the front side of the active module 11, and a feeding template 13 vertically fixed to the front side of the flow distribution module 12. The fixed mold frame 2 includes a shaping module 21, a base template 23 vertically arranged behind the shaping module 21, and an ejector unit 22 arranged between the base template 23 and the shaping module 21.

[0026] Two molding modules 3 are also provided between the movable mold frame 1 and the fixed mold frame 2, which are symmetrically distributed vertically. The molding module 3 includes a movable mold core 31 embedded in the rear side of the active module 11 and a fixed mold core 32 embedded in the front side of the shaping module 21 and cooperating with the movable mold core 31.

[0027] A triangular cavity 311 is formed on the end face of the moving mold core 31. Correspondingly, a triangular protrusion 321 that cooperates with the triangular cavity 311 is provided on the end face of the fixed mold core 32 in the direction of the moving mold core 31.

[0028] A fan-shaped notch 322 is provided at the right corner of the triangular convex bulge 321. Correspondingly, a fan-shaped protrusion 312 is formed at the right corner of the triangular concave cavity 311 in the direction of the fixed mold core 32, which cooperates with the fan-shaped notch 322.

[0029] The molding module 3 also includes a slot molding assembly 34. The slot molding assembly 34 includes a first core-pulling block 341 movably connected to the front side of the shaping module 21 to have left and right tilting movement function and located to the right of the fixed mold core 32, a first traction rod 342 obliquely inserted in the first core-pulling block 341, and a first slot molding strip 343 and a second slot molding strip 344 detachably fixed on the first core-pulling block 341 facing the side of the fixed mold core 32. The ends of the first slot molding strip 343 and the second slot molding strip 344 are both set towards the right corner of the triangular protrusion 321 and both cooperate with the fan-shaped notch 322. The front end of the first traction rod 342 is fixed to the rear side of the active module 11.

[0030] The molding module 3 also includes a flanging forming component 33. The flanging forming component 33 includes a second core-pulling block 331 that is movably connected to the front side of the shaping module 21 to have left and right translation function and is located to the right of the fixed mold core 32; at least one second traction rod 332 that is obliquely inserted in the second core-pulling block 331 and distributed in parallel from top to bottom; and a flanging forming block 333 fixed on the side of the second core-pulling block 331 facing the fixed mold core 32. The side of the flanging forming block 333 facing the triangular protrusion 321 cooperates with the right outer wall of the triangular protrusion 321. The front end of each second traction rod 332 is fixed to the rear side of the active module 11.

[0031] The rear corner of the end of the first slot forming strip 343 is provided with an inclined notch 3431, and the rear edge of the opening of the notch 3431 is formed with an inclined forming slope 3432.

[0032] An arc-shaped notch 3441 is formed at the corner of the end of the second slot forming strip 344 facing the first slot forming strip 343, and an arc-shaped rib 3442 is formed outward on the inner wall of the arc-shaped notch 3441.

[0033] The front and rear edges of the flanged forming block 333 at a corner facing the triangular protrusion 321 are respectively provided with a first arc-shaped limiting groove 3331 and a second arc-shaped limiting groove 3332.

[0034] The radial cross-sectional shape of the first arc-shaped limiting groove 3331 is L-shaped.

[0035] The bottom surface of the second arc-shaped limiting groove 3332 has a guide slope 3333.

[0036] Working principle:

[0037] The feeding template 13 in the movable mold frame 1 and the base template 23 in the fixed mold frame 2 are respectively installed on the action mechanism and the machine body of the injection molding machine. The action mechanism is operated to drive the feeding template 13 to move backward, and then the flow diversion module 12 drives the active module 11 to move backward and towards the shaping module 21 until the two are joined together (existing technology).

[0038] During the above process, the moving mold core 31 in each molding module 3 will also move backward with the active module 11 until the end face of each moving mold core 31 is matched with the end face of a corresponding fixed mold core 32, so that the triangular protrusion 321 on each fixed mold core 32 extends into the corresponding triangular cavity 311, and each fan-shaped protrusion 312 extends into the corresponding fan-shaped notch 322.

[0039] During the movement of the feeding template 13, the telescopic end of the second core-pulling cylinder 91 in the second composite core-pulling assembly 9 will extend outward to drive the second slider 92 to move to the left, thereby driving the third auxiliary forming block 93 to tilt and move along the third inclined groove 33 towards 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.

[0040] During the movement of the moving module 1, the first traction rod 342 in the slot forming assembly 34 will move synchronously, thereby forcing the first core-pulling block 341 to tilt and move towards the fixed mold core 32, so that the ends of the first slot forming strip 343 and the second slot forming strip 344 on the first core-pulling block 341 extend into the fan-shaped notch 322.

[0041] Meanwhile, during the movement of the moving module 1, each of the second traction rods 332 in the flanging forming component 33 will move synchronously, thereby forcing the second core-pulling block 331 to translate towards the fixed mold core 32, so that the first arc-shaped limiting groove 3331 and the second arc-shaped limiting groove 3332 on the flanging forming block 333 will approach the right outer wall of the triangular convex 321.

[0042] Subsequently, the molten material enters through the gate in the feed template 13 and the runner in the flow distribution module 12 into the space between the triangular protrusion 321 on the fixed mold core 32 and the triangular cavity 311 on the moving mold core 31, and between the fan-shaped protrusion 312 on the moving mold core 31 and the fan-shaped notch 322 on the fixed mold core 32. After cooling, the rearview mirror lower housing (existing technology) is formed. The notch 3431 on the first slot forming strip 343 and the forming slope 3432 on the notch 3431 will form an oblique slot on the rearview mirror lower housing. The arc notch 3441 on the second slot forming strip 344 and the arc rib 3442 on the arc notch 3441 will form an arc slot on the rearview mirror lower housing. The first arc limiting groove 3331 and the second arc limiting groove 3332 will form an arc flange on the rearview mirror lower housing.

[0043] Subsequently, the feeding template 13 is driven forward by the action mechanism, and then the active module 11 is driven forward by the diversion module 12 to leave the shaping module 21, thereby driving each moving mold core 31 to also move forward to leave each fixed mold core 32. Finally, the ejector unit 22 pushes the formed rearview mirror lower mirror shell forward (existing technology).

[0044] In this invention, the first slot forming strip 343 and the second slot forming strip 344 used to form two arc-shaped slots are both fixed to the first core-pulling block 341 in a detachable manner, thereby realizing a split assembly structure, which simplifies the processing process and reduces manufacturing costs. Moreover, once wear or damage occurs, only the first slot forming strip 343 or the second slot forming strip 344 needs to be replaced, thus reducing the cost of use.

[0045] 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. An injection mold for a rearview mirror lower housing of an automobile, comprising a movable mold frame and a fixed mold frame respectively arranged front to rear and cooperating with each other; the movable mold frame includes an active module, a flow distribution module fixed to the front side of the active module, and a feeding template vertically fixed to the front side of the flow distribution module; the fixed mold frame includes a shaping module, a base template vertically arranged behind the shaping module, and an ejector unit arranged between the base template and the shaping module, characterized in that: Two symmetrically distributed molding modules are provided between the movable mold frame and the fixed mold frame. The molding module includes a movable mold core embedded in the rear side of the active module and a fixed mold core embedded in the front side of the shaping module and cooperating with the movable mold core. A triangular cavity is formed on the end face of the moving mold core, and correspondingly, a triangular protrusion that cooperates with the triangular cavity is formed on the end face of the fixed mold core in the direction of the moving mold core. A fan-shaped notch is provided at the right corner of the triangular convex bulge. Correspondingly, a fan-shaped protrusion is formed at the right corner of the triangular concave cavity in the direction of the fixed mold core, which cooperates with the fan-shaped notch. The molding module further includes a slot molding assembly, which includes a first core-pulling block movably connected to the front of the shaping module to have left and right tilting movement function and located to the right of the fixed mold core, a first traction rod obliquely inserted in the first core-pulling block, and a first slot molding strip and a second slot molding strip detachably fixed on the first core-pulling block facing the fixed mold core. The ends of the first slot molding strip and the second slot molding strip are both set towards the right corner of the triangular protrusion and both cooperate with the fan-shaped notch. The front end of the first traction rod is fixed to the rear of the active module.

2. The injection mold for the lower housing of a car rearview mirror according to claim 1, characterized in that, The molding module further includes a flanging molding component, which includes a second core-pulling block movably connected to the front of the shaping module to have left and right translation function and located to the right of the fixed mold core, at least one second traction rod obliquely inserted in the second core-pulling block and distributed in parallel from top to bottom, and a flanging molding block fixed on the second core-pulling block facing the fixed mold core. The side of the flanging molding block facing the triangular convex hull cooperates with the right outer wall of the triangular convex hull. The front end of each second traction rod is fixed to the rear of the active module.

3. The injection mold for the lower housing of a car rearview mirror according to claim 1, characterized in that, An inclined notch is provided at the rear corner of the end of the first slot forming strip, and an inclined forming slope is formed at the rear edge of the opening of the notch.

4. The injection mold for the lower housing of a car rearview mirror according to claim 1, characterized in that, An arc-shaped notch is formed at the corner of the end of the second slot forming strip facing the first slot forming strip, and an arc-shaped rib is formed outward on the inner wall of the arc-shaped notch.

5. The injection mold for the lower housing of a car rearview mirror according to claim 2, characterized in that, The front and rear edges of the flanged forming block facing a corner of the triangular convex bulge are respectively provided with a first arc-shaped limiting groove and a second arc-shaped limiting groove.

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