A forming die for a triangular seat cover of an automobile rearview mirror
By employing a two-stage mold-closing method and an inner core component design, the processing procedures and installation steps for the automotive rearview mirror triangular seat cover mold are simplified, solving the problems of cumbersome and expensive moving modules in existing technologies, and achieving efficient molding of the oblique slot.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO ZHONGYUE PRECISION MOLD CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-05-29
AI Technical Summary
When using existing injection molds to process the triangular seat cover of automotive rearview mirrors, the processing of the moving module is cumbersome, involves many steps, and is costly, making it difficult to efficiently form the internal oblique groove.
The two-stage mold-closing method simplifies the processing and installation steps through the design of the inner core component and the splicing component. The active core block, the forming core block and the secondary core block in the inner core component are used to form the oblique groove, avoiding the use of the core-pulling cylinder.
It simplifies the mold processing procedures and installation steps, shortens the production time, and reduces the mold production cost.
Smart Images

Figure CN224296465U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a molding die for a car rearview mirror triangular seat cover. Background Technology
[0002] The rearview mirror triangular bracket cover is a decorative part installed on the outside of the car's rearview mirror. Its function is to cover the gap between the rearview mirror and the car body to improve the overall aesthetics. More importantly, it can reduce blind spots after installation to improve driving safety. Most rearview mirror triangular bracket covers on the market are made of plastic, so their production process relies on matching injection molds and injection molding machines.
[0003] Because the rearview mirror triangular seat cover is triangular in shape and has an internal angled slot for assembly, existing injection molds have to add several hydraulic cylinders for core pulling to the moving module in order to form the internal angled slot. This makes the processing of the moving module more complicated, with more installation steps and longer production time. In addition, it also leads to higher mold manufacturing costs, which needs further improvement. 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 die for a car rearview mirror triangular seat cover that simplifies the processing procedures and installation steps to shorten the production time and reduces the mold manufacturing cost.
[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a molding die for a car rearview mirror triangular seat cover, comprising an active module and a molding module that cooperate with each other and are respectively arranged front and rear, an end plate fixed to the front side of the active module, a base plate fixed to the rear side of the molding module, and a top material assembly disposed between the base plate and the molding module, characterized in that:
[0006] It also includes two inner core components that are symmetrically distributed vertically between the active module and the molding module. The inner core components include an active core block embedded in the rear side of the active module, a molding core block embedded in the front side of the molding module, and a secondary core block that is inclined and movably interspersed in the active core block and the active module. A molding socket is formed on the side of the secondary core block facing the molding core block.
[0007] It also includes a traction block that is movably located on the front side of the active module to have a forward and backward translation function. The end plate is fixed on the front side of the traction block. The inner core assembly also includes a seat block fixed on the rear side of the traction block. The side of the secondary core block away from the forming core block is inclined and movably connected to the seat block.
[0008] The active core block has a main cavity on its end face, and correspondingly, the molded core block has a guide cavity on its end face. The bottom surface of the guide cavity has a protrusion that cooperates with the main cavity in the direction of the active core block.
[0009] A splicing groove is provided on the right edge of the opening of the main cavity, and a stop is formed on the left edge of the opening of the main cavity towards the forming core block;
[0010] A transition block is formed between the lower outer wall of the protrusion and the lower inner wall of the guide cavity to cooperate with the end of the molded socket.
[0011] Preferably, the inner core assembly further includes a first splicing component and a second splicing component respectively arranged on the left and right sides. The first splicing component includes a first guide block that is tilted and movably connected to the front side of the molding module to have the function of tilting and moving left and right and located on the left side of the molding core block, a first guide post that is tilted and interspersed in the first guide block, and a first splicing block fixed on the outer wall of the first guide block facing the molding module. The front end of the first guide post is fixed on the active module.
[0012] Preferably, the front side of the first splicing block has a shaped arc surface, and a first shaped notch is provided on the side of the first splicing block facing the shaped core block.
[0013] Preferably, the second splicing component includes a second guide block that is tilted and movably connected to the front side of the molding module to have left and right tilting movement function and is located to the right of the molding core block, a second guide post that is tilted and interspersed in the second guide block, and a second splicing block fixed on the outer wall of the second guide block facing the molding module, wherein the front end of the second guide post is fixed on the active module.
[0014] Preferably, a second molding notch is provided on the side of the second splicing block facing the molding core block, and a connecting block is formed between the front edge of the opening of the second molding notch and the front outer wall of the second splicing block.
[0015] Preferably, a first positioning cavity is provided on the left and right outer walls of the transition block, and a second positioning cavity is provided on the left and right outer walls of the protrusion.
[0016] Preferably, a first positioning block is formed on the side of the first splicing block facing the molded core block and located below the first molding notch, and a second positioning block is formed on the bottom surface of the first molding notch facing the molded core block. The first positioning block and the second positioning block respectively cooperate with a first positioning cavity and a second positioning cavity on the left side.
[0017] Preferably, a third positioning block is formed on the side of the second splicing block facing the molded core block and located below the second molding notch, and a fourth positioning block is formed on the bottom surface of the second molding notch facing the molded core block. The third positioning block and the fourth positioning block cooperate with a first positioning cavity and a second positioning cavity on the right side, respectively.
[0018] Compared with the prior art, the advantages of this utility model are: this utility model can form the oblique groove inside the triangular seat cover of the sight glass through a two-stage mold closing method without adding any hydraulic cylinder for core pulling, thereby simplifying the processing procedures and installation steps to shorten the production time and reducing the mold manufacturing cost. Attached Figure Description
[0019] 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:
[0020] Figure 1 This is an exploded view of the right front side of this utility model;
[0021] Figure 2 This is an exploded view of the left rear side of the active chip and the secondary chip of this utility model;
[0022] Figure 3 This is a structural diagram of the left front side of the molded core block of this utility model;
[0023] Figure 4 This is a structural diagram of the right front side of the first splicing component of this utility model;
[0024] Figure 5 This is a structural diagram of the left front side of the second splicing component 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 1-5 As shown, a molding die for a car rearview mirror triangular seat cover includes an active module 1 and a molding module 2 that cooperate with each other and are respectively arranged in front and behind, an end plate 3 fixed to the front side of the active module 1, a base plate 4 fixed to the rear side of the molding module 2, and a top material assembly 5 disposed between the base plate 4 and the molding module 2.
[0028] It also includes two inner core components 6 disposed between the active module 1 and the molding module 2 and symmetrically distributed vertically. The inner core components 6 include an active core block 61 embedded in the rear side of the active module 1, a molding core block 62 embedded in the front side of the molding module 2, and a secondary core block 63 that is inclined and movably interspersed in the active core block 61 and the active module 1. A molding socket 631 is formed outward on the side of the secondary core block 63 facing the molding core block 62.
[0029] It also includes a traction block 7 that is movably located in front of the active module 1 to have a forward and backward translation function, an end plate 3 that is fixed in front of the traction block 7, and an inner core assembly 6 that includes a seat block 64 fixed in the rear of the traction block 7, and a side of the secondary core block 63 that is away from the forming core block 62 that is tilted and movably connected to the seat block 64.
[0030] The active core block 61 has a main cavity 611 on its end face. Correspondingly, the molded core block 62 has a guide cavity 621 on its end face. The bottom surface of the guide cavity 621 has a protrusion 623 that cooperates with the main cavity 611 in the direction of the active core block 61.
[0031] A splicing groove 612 is provided on the right edge of the opening of the main cavity 611, and a stop block 613 is formed on the left edge of the opening of the main cavity 611 toward the forming core block 62.
[0032] A transition block 622 is formed between the lower outer wall of the boss 623 and the lower inner wall of the guide cavity 621, which cooperates with the end of the molded socket 631.
[0033] The inner core assembly 6 also includes a first splicing assembly 66 and a second splicing assembly 65 respectively arranged on the left and right. The first splicing assembly 66 includes a first guide block 661 that is tilted and movably connected to the front side of the molding module 2 to have the function of tilting left and right and is located on the left side of the molding core block 62, a first guide post 662 that is tilted and inserted into the first guide block 661, and a first splicing block 663 fixed on the outer wall of the first guide block 661 facing the molding module 2. The front end of the first guide post 662 is fixed on the active module 1.
[0034] The front side of the first splicing block 663 has a shaped arc surface 6631, and the first splicing block 663 has a first shaped notch 6632 on the side facing the shaped core block 62.
[0035] The second splicing component 65 includes a second guide block 651 that is tilted and movably connected to the front side of the molding module 2 to enable left and right tilting movement and is located to the right of the molding core block 62, a second guide post 652 that is tilted and interspersed in the second guide block 651, and a second splicing block 653 that is fixed on the outer wall of the second guide block 651 facing the molding module 2. The front end of the second guide post 652 is fixed on the active module 1.
[0036] A second molding notch 6531 is provided on the side of the second splicing block 653 facing the molding core block 62, and a connecting block 6532 is formed between the front edge of the opening of the second molding notch 6531 and the front outer wall of the second splicing block 653.
[0037] A first positioning cavity 624 is provided on the outer walls of both the left and right sides of the transition block 622, and a second positioning cavity 625 is provided on the outer walls of both the left and right sides of the protrusion 623.
[0038] On the side of the first splicing block 663 facing the molding core block 62, a first positioning block 6633 is formed outward and located below the first molding notch 6632. On the bottom surface of the first molding notch 6632 facing the molding core block 62, a second positioning block 6634 is formed. The first positioning block 6633 and the second positioning block 6634 respectively cooperate with a first positioning cavity 624 and a second positioning cavity 625 on the left side.
[0039] On the second splicing block 653, a third positioning block 6533 is formed outward on the side facing the molding core block 62, located below the second molding notch 6531. A fourth positioning block 6534 is formed on the bottom surface of the second molding notch 6531 in the direction facing the molding core block 62. The third positioning block 6533 and the fourth positioning block 6534 respectively cooperate with a first positioning cavity 624 and a second positioning cavity 625 on the right side.
[0040] On the side of the first splicing block 663 facing the molding core block 62, a fifth positioning block 6635 is formed outward and located above the first molding notch 6632. Correspondingly, on the side of the second splicing block 653 facing the molding core block 62, a third positioning cavity 6535 is formed above the second molding notch 6531 and cooperates with the fifth positioning block 6635.
[0041] A sixth positioning block 6636 is formed on the front outer wall of the first splicing block 663 in the direction of the active core block 61, located above the second forming notch 6531. A seventh positioning block 6536 is formed on the front outer wall of the second splicing block 653 in the direction of the active core block 61, located above the connecting block 6532. Correspondingly, two fourth positioning cavities 615 are opened on the end face of the active core block 61, which are respectively distributed on the left and right and located above the splicing groove 612 and the stop block 613. The two fourth positioning cavities 615 cooperate with the sixth positioning block 6636 and the seventh positioning block 6536 respectively.
[0042] A first oblique hole 614 is provided between the lower inner wall of the main cavity 611 and the root outer wall of the active core block 61. Correspondingly, two second oblique holes 101 are provided between the front and rear outer walls of the active module 1. The two second oblique holes 101 are respectively engaged with the first oblique holes 614 on the active core blocks 61 in the two inner core components 6. The secondary core blocks 63 in each inner core component 6 are movably inserted into the corresponding first oblique hole 614 and second oblique hole 101.
[0043] Working principle:
[0044] The end plate 3 and the active module 1 are both installed on the action mechanism of the injection molding machine. The base plate 4 is then installed on the body of the injection molding machine. The action mechanism first drives the active module 1 to move backward, which in turn drives the active core block 61 in each inner core assembly 6 to move backward and towards the molding core block 62 until the two are joined together. At this time, the active module 1 and the molding module 2 are also joined together (existing technology). At the same time, the end face of the moving mold core 3 is joined together with the end face of the fixed mold core 4, which in turn makes the main body cavity 611 on the active core block 61 and the guide cavity 621 on the molding core block 62 join together. The boss 623 and the transition block 622 on the guide cavity 621 both extend into the main body cavity 611.
[0045] During its movement, the active module 1 drives the first guide post 662 in the first splicing component 66 and the second guide post 652 in the second splicing component 65 to move synchronously. This forces the first guide block 661 and the second guide block 651 to move towards the forming core block 62, thereby causing the first splicing block 663 and the second splicing block 653 to be inserted between the main body cavity 611 and the guide cavity 621. This continues until the first positioning block 6633 and the second positioning block 6634 on the first splicing block 663 are respectively inserted into a first positioning cavity 624 and a second positioning cavity 625 on the left side. At the same time, the second splicing block 663... The third positioning block 6533 and the fourth positioning block 6534 on the 53 are respectively inserted into a first positioning cavity 624 and a second positioning cavity 625 on the right side. At this time, the fifth positioning block 6635 on the first splicing block 663 is inserted into the third positioning cavity 6535 on the second splicing block 653. In addition, the sixth positioning block 6636 on the first splicing block 663 and the seventh positioning block 6536 on the second splicing block 653 are respectively inserted into two fourth positioning cavities 615. In this way, the first splicing block 663, the second splicing block 653, the active core block 61 and the molding core block 62 are all fixed together to prevent loosening.
[0046] Subsequently, the end plate 3 is driven to move backward by the action mechanism, which in turn drives the traction block 7 to move backward and toward the active module 1 until the traction block 7 and the active module 1 are joined together (existing technology); during this process, the traction block 7 will use the seat block 64 to force the secondary core block 63 to move backward along the first inclined hole 614 and the second inclined hole 101, thereby causing the end of the molding socket 631 to be inserted obliquely between the main body cavity 611 and the guide cavity 621.
[0047] Subsequently, the molten material enters the space between the main cavity 611 and the guide cavity 621 through the gate in the end plate 3 and the runner in the traction block 7. Under the action of the boss 623, the splicing groove 612, the stop block 613, the forming arc surface 6631, the first forming notch 6632, the second forming notch 6531, the connecting block 6532 and the forming socket 631, it is injection molded and formed after cooling. After cooling, the rearview mirror triangular seat cover is formed. Then, the traction block 7 is driven forward to move away from the active module 1. Then, the secondary core block 63 is driven to move back to its original position. Then, the active module 1 is driven forward to move away from the forming module 2. Then, each first splicing block 663 and each second splicing block 653 are driven to move back to their original position. Finally, the formed rearview mirror triangular seat cover is pushed forward by the ejector assembly 5 (existing technology).
[0048] This invention can form the oblique groove inside the sight glass triangular seat cover through a two-stage mold-closing method without adding any hydraulic cylinders for core pulling. This simplifies the processing and installation steps, shortens the production time, and also reduces the mold manufacturing cost.
[0049] 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 a rearview mirror triangular seat cover, comprising an active module and a molding module that cooperate with each other and are respectively arranged front and rear, an end plate fixed to the front side of the active module, a base plate fixed to the rear side of the molding module, and an ejector assembly disposed between the base plate and the molding module, characterized in that: It also includes two inner core components that are symmetrically distributed vertically between the active module and the molding module. The inner core components include an active core block embedded in the rear side of the active module, a molding core block embedded in the front side of the molding module, and a secondary core block that is inclined and movably interspersed in the active core block and the active module. A molding socket is formed on the side of the secondary core block facing the molding core block. It also includes a traction block that is movably located on the front side of the active module to have a forward and backward translation function. The end plate is fixed on the front side of the traction block. The inner core assembly also includes a seat block fixed on the rear side of the traction block. The side of the secondary core block away from the forming core block is inclined and movably connected to the seat block. The active core block has a main cavity on its end face, and correspondingly, the molded core block has a guide cavity on its end face. The bottom surface of the guide cavity has a protrusion that cooperates with the main cavity in the direction of the active core block. A splicing groove is provided on the right edge of the opening of the main cavity, and a stop is formed on the left edge of the opening of the main cavity towards the forming core block; A transition block is formed between the lower outer wall of the protrusion and the lower inner wall of the guide cavity to cooperate with the end of the molded socket.
2. The molding die for a car rearview mirror triangular seat cover according to claim 1, characterized in that, The inner core assembly also includes a first splicing assembly and a second splicing assembly respectively arranged on the left and right. The first splicing assembly includes a first guide block that is tilted and movably connected to the front side of the molding module to have the function of tilting and moving left and right and located on the left side of the molding core block, a first guide post that is tilted and interspersed in the first guide block, and a first splicing block fixed on the outer wall of the first guide block facing the molding module. The front end of the first guide post is fixed on the active module.
3. The molding die for a car rearview mirror triangular seat cover according to claim 2, characterized in that, The front side of the first splicing block has a shaped arc surface, and a first shaped notch is provided on the side of the first splicing block facing the shaped core block.
4. The molding die for a car rearview mirror triangular seat cover according to claim 3, characterized in that, The second splicing component includes a second guide block that is tilted and movably connected to the front side of the molding module to have left and right tilting and moving functions and is located to the right of the molding core block, a second guide post that is tilted and interspersed in the second guide block, and a second splicing block fixed on the outer wall of the second guide block facing the molding module. The front end of the second guide post is fixed on the active module.
5. The molding die for a car rearview mirror triangular seat cover according to claim 4, characterized in that, The second splicing block has a second molding notch on one side facing the molding core block, and a connecting block is formed between the front edge of the opening of the second molding notch and the front outer wall of the second splicing block.
6. The molding die for a car rearview mirror triangular seat cover according to claim 5, characterized in that, A first positioning cavity is provided on the outer walls of both the left and right sides of the transition block, and a second positioning cavity is provided on the outer walls of both the left and right sides of the protrusion.
7. The molding die for a car rearview mirror triangular seat cover according to claim 6, characterized in that, A first positioning block is formed on the side of the first splicing block facing the molded core block, located below the first molding notch. A second positioning block is formed on the bottom surface of the first molding notch facing the molded core block. The first positioning block and the second positioning block cooperate with a first positioning cavity and a second positioning cavity on the left side, respectively.
8. The molding die for a car rearview mirror triangular seat cover according to claim 6, characterized in that, A third positioning block is formed on the side of the second splicing block facing the molded core block, located below the second molding notch. A fourth positioning block is formed on the bottom surface of the second molding notch facing the molded core block. The third positioning block and the fourth positioning block cooperate with a first positioning cavity and a second positioning cavity on the right side, respectively.