An injection mold for an automobile charging port cover assembly

Abstract

The application relates to an injection mold of a car charging port cover assembly, which comprises a movable mold module and a fixed mold module which are matched and arranged in front and back respectively, a flow divider fixed on the front side of the movable mold module, a feeding plate fixed on the front side of the flow divider, a base plate arranged on the rear side of the fixed mold module, and an ejection mechanism arranged between the base plate and the fixed mold module; a rubber ring forming unit and a main body forming unit are arranged between the movable mold module and the fixed mold module and are distributed in an upper and lower mode, the rubber ring forming unit comprises a first positioning block and a second positioning block which are fixed on the front and rear sides of the movable mold module and are matched, a third positioning block embedded in the second positioning block, and a fourth positioning block embedded on the front side of the fixed mold module; the main body forming unit comprises a movable mold core and a fixed mold core which are embedded on the rear side of the movable mold module and the front side of the fixed mold module and are matched, and an inner forming module arranged between the fixed mold core and the fixed mold module; the application simplifies the production steps, improves the work efficiency, reduces the labor cost, and saves the mold manufacturing cost.

Description

Technical Field

[0001] This invention relates to the field of injection molding technology, and in particular to an injection mold for an automotive charging port cover assembly. Background Technology

[0002] With the rapid development of the global automotive industry, the recycling of waste plastics from automobiles has become an important issue in promoting the circular economy and achieving sustainable development. At the same time, in order to solve the problem of plastic waste pollution, the international automotive industry has required automakers to use recycled waste plastics and apply them to some parts of automobiles to achieve the effect of reuse, and has made this clear in relevant regulations.

[0003] The car charging port cover assembly is a protective device for the charging interface of electric vehicles. It is mainly used to protect the charging interface and prevent rainwater or foreign objects from entering the charging port. It mainly consists of a seat cover embedded in the vehicle body and a pressure cover on the seat cover that can be opened by swinging. Since the car charging port cover assembly does not involve critical safety components for vehicle operation, it can use recycled plastics.

[0004] To effectively prevent rainwater or foreign objects from entering the charging port, rubber flanges and rubber pressure rings must be installed on the seat cover and pressure cover for sealing. Most commercially available rubber flanges and pressure rings are manufactured separately in rubber injection molding equipment and then glued to the seat cover and pressure cover after manufacturing. This process is cumbersome, and because the gluing process is all done manually, work efficiency is low and labor costs are high. Furthermore, the rubber flanges and pressure rings glued on are prone to detachment and lack firmness, causing the sealing effect of the car charging port cover assembly to be inconsistent over a long period, which urgently needs to be addressed. Summary of the Invention

[0005] In view of the current state of the prior art, the technical problem to be solved by the present invention is to provide an injection mold for an automotive charging port cover assembly that simplifies the production steps, improves work efficiency, reduces labor costs, ensures that the sealing effect of the automotive charging port cover assembly can be maintained for a long time, saves mold making costs, reduces the number of injection molding machines required, and shortens the interval between process flows.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: an injection mold for an automotive charging port cover assembly, comprising a moving module and a fixed module that cooperate with each other and are respectively arranged front and rear, a flow divider block fixed on the front side of the moving module, a feed plate fixed on the front side of the flow divider block, a base plate disposed on the rear side of the fixed module, and an ejection mechanism disposed between the base plate and the fixed module, characterized in that:

[0007] Between the moving module and the fixed module, there are rubber ring forming units and main body forming units respectively distributed vertically. The rubber ring forming unit includes a first positioning block and a second positioning block respectively fixed on the front and rear sides of the moving module and cooperating with each other, a third positioning block embedded in the second positioning block, and a fourth positioning block embedded on the front side of the fixed module.

[0008] The rubber ring forming unit also includes a limiting component and an alignment component that cooperate with each other. The limiting component includes a drive block that is movably connected to the front side of the fixed module to have the function of left and right translation and is located behind the fourth positioning block, a first traction block and a second traction block that are fixed to the left side of the drive block and respectively arranged in front and behind, a positioning cylinder that is fixed on the outer wall of the right side of the fixed module, and a linkage module that is arranged between the first traction block and the second traction block. The telescopic end of the positioning cylinder is arranged laterally to the left and fixed on the drive block.

[0009] The linkage module includes a guide block fixedly inserted in the first traction block, a guide pin vertically and movably inserted in the guide block to have the function of tilting left and right in the horizontal direction, a limiting block rotatably connected to the guide pin, an arc-shaped block concentrically and rotatably inserted in the fourth positioning block and located to the left of the limiting block, and a connecting rod between the arc-shaped block and the second traction block. The two ends of the connecting rod are rotatably connected to the rear side of the arc-shaped block and the front side of the second traction block, respectively. The arc-shaped outer wall of the arc-shaped block is set to the left. The upper and lower ends of the guide pin are movably connected to the fourth positioning block and have the function of forward and backward translation.

[0010] Preferably, a first limiting groove is provided on the front side of the limiting block, a second limiting groove is provided on the left edge of the bottom surface of the first limiting groove, and an L-shaped corner cavity is provided between the middle of the bottom surface of the second limiting groove and the middle of the bottom surface of the first limiting groove. Correspondingly, a stop is formed on the right side of the front end of the bow-shaped block in the direction of the limiting block, and an L-shaped notch is provided at the rear corner of the end of the stop to cooperate with the L-shaped corner cavity.

[0011] Preferably, the alignment component includes a first slider movably connected to the front side of the first positioning block to have a vertical movement function, a first core-pulling cylinder fixed on the upper outer wall of the moving module, and a first alignment post obliquely inserted into the first positioning block. The telescopic end of the first core-pulling cylinder is vertically downward and fixed on the first slider. The first alignment post is set with the front higher than the rear. The front end of the first alignment post is movably connected to the first slider to have the function of tilting forward and backward while keeping the left and right positions unchanged. The rear end of the first alignment post forms a first forming post outward.

[0012] Preferably, the linkage module further includes a seat block fixed on the rear outer wall of the fourth positioning block and located to the left of the bow-shaped block, and a second alignment post obliquely inserted into the seat block. The second alignment post is set with the front higher than the rear. The rear end of the second alignment post is movably connected to the front side of the second traction block so as to have the function of tilting and moving forward and backward without changing the left and right position. The front end of the second alignment post forms a second forming post that cooperates with the end of the first forming post.

[0013] Preferably, a tapered protrusion is formed on the front outer wall of the third positioning block, which is inclined upward. The second forming column is movably inserted into the third positioning block and the tapered protrusion. The left and right sides of the fourth positioning block are each provided with a splicing module that cooperates with the tapered protrusion.

[0014] Preferably, the splicing module includes a second slider movably connected to the front side of the fixed module to have a left and right translation function, and a second core-pulling cylinder fixed on the left or right outer wall of the fixed module. The telescopic end of the second core-pulling cylinder is arranged laterally and towards the direction of the second slider and fixed on the second slider. A first extension block is formed outward on the side of the second slider facing the fourth positioning block, and a second extension block is formed upward and inclined backward on the upper side of the first extension block.

[0015] Preferably, a left-right oriented oblique slot is formed between the upper and lower outer walls of the guide block, and a straight extension section is formed outward at both ends of the oblique slot. A guide slot is formed between the oblique slot and the two straight extension sections, and the guide pin is vertically inserted into the guide slot.

[0016] Preferably, the main forming unit includes a moving mold core and a fixed mold core respectively embedded on the rear side of the moving module and the front side of the fixed module and cooperating with each other, and an inner forming module disposed between the fixed mold core and the fixed module; the inner forming module includes a third slider movably connected to the front side of the fixed module to have a left and right translation function and located to the right of the fixed mold core, a third core-pulling cylinder fixed to the outer wall of the right side of the fixed module, and a steering block movably connected to the fixed mold core to have a front and back translation function. The rear side of the steering block is movably connected to the third slider to have a left and right tilting movement function. The telescopic end of the third core-pulling cylinder is arranged laterally to the left and fixed to the third slider.

[0017] Preferably, the front side of the fixed mold core is formed with a base, and the right edge of the end of the base is provided with a positioning opening groove. The inner forming module also includes a locking block disposed inside the positioning opening groove. The left end of the locking block is rotatably connected in the positioning opening groove, and the right end of the locking block is movably connected to the front side of the steering block.

[0018] Preferably, the right end of the positioning block is provided with a U-shaped guide groove, and the rear corner of the right end of the positioning block is also provided with a guide notch that intersects with and communicates with the rear inner wall of the U-shaped guide groove. Correspondingly, a guide traction block is formed outward on the front side of the steering block. The guide traction block moves through the guide notch and extends into the U-shaped guide groove. A vertically arranged traction pin is also inserted and fixed in the guide traction block. Both the upper and lower ends of the traction pin are movably inserted into the U-shaped guide groove. An inclined alignment forming cavity is provided on the front outer wall of the left end of the positioning block.

[0019] Compared with the prior art, the advantages of the present invention are as follows:

[0020] 1. This invention uses an integrated injection molding process to directly mold the rubber flange and rubber pressure ring onto the seat and pressure cover of the car charging port cover assembly, and connect them tightly to each other. This eliminates the need to separately mold and mold the rubber flange and rubber pressure ring, and also eliminates the need for manual pasting, thereby simplifying the production process, improving work efficiency, and reducing labor costs.

[0021] 2. The rubber flanges and rubber pressure rings, which are formed on the seat cover and pressure cover by high-temperature injection molding, are not easy to fall off, thereby improving the firmness and ensuring that the sealing effect of the car charging port cover assembly can be maintained for a long time.

[0022] 3. This invention integrates the plastic molding mold and the rubber molding mold into a single mold, thereby saving mold manufacturing costs and requiring only one injection molding machine. After mold closing, the plastic molding and rubber molding processes are carried out simultaneously. After mold separation, the main structure of the injection-molded charging port cover assembly is removed from the plastic molding position and directly placed into the rubber molding position. The rubber molding process is completed after the next mold closing. This eliminates one loading and unloading operation and shortens the process flow interval, further improving production efficiency. Attached Figure Description

[0023] 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:

[0024] Figure 1 This is an exploded view of the right front side of the present invention;

[0025] Figure 2 This is an exploded structural view of the left front side of the limiting component of the present invention;

[0026] Figure 3 This is an exploded view of the right front side of the alignment component of the present invention;

[0027] Figure 4 This is a structural diagram of the front right side of the splicing module of the present invention;

[0028] Figure 5 This is a structural diagram of the left rear side of the splicing module of the present invention;

[0029] Figure 6 This is a structural diagram of the right front side of the internal molding module of the present invention;

[0030] Figure 7 This is a structural diagram of the right front side of the anti-deviation unit of the present invention. Detailed Implementation

[0031] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention 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.

[0032] To keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of known functions and known components are omitted.

[0033] like Figures 1-7 As shown, an injection mold for an automotive charging port cover assembly includes a moving module 1 and a fixed module 2 that cooperate with each other and are respectively arranged front and rear, a flow divider block 3 fixed on the front side of the moving module 1, a feed plate 4 fixed on the front side of the flow divider block 3, a base plate 5 located on the rear side of the fixed module 2, and an ejection mechanism located between the base plate 5 and the fixed module 2.

[0034] Between the moving module 1 and the fixed module 2, there are rubber ring forming units 7 and main body forming units 8 respectively distributed vertically. The rubber ring forming unit 7 includes a first positioning block 71 and a second positioning block 72 respectively fixed on the front and rear sides of the moving module 1 and cooperating with each other, a third positioning block 73 embedded in the second positioning block 72, and a fourth positioning block 77 embedded on the front side of the fixed module 2.

[0035] The rubber ring forming unit 7 also includes a limiting component 76 and an alignment component 75 that cooperate with each other. The limiting component 76 includes a drive block 761 that is movably connected to the front side of the fixed module 2 to have the function of left and right translation and is located behind the fourth positioning block 77, a first traction block 763 and a second traction block 766 that are fixed to the left side of the drive block 761 and respectively arranged in front and behind, a positioning cylinder 762 that is fixed on the outer wall of the right side of the fixed module 2, and a linkage module that is arranged between the first traction block 763 and the second traction block 766. The telescopic end of the positioning cylinder 762 is arranged laterally to the left and fixed on the drive block 761.

[0036] The linkage module includes a guide block 764 that is inserted and fixed in the first traction block 763, a guide pin 7610 that is vertically and movably inserted in the guide block 764 to have the function of tilting left and right in the horizontal direction, a limiting block 765 that is rotatably connected to the guide pin 7610, an arc-shaped block 769 that is concentric and rotatably inserted in the fourth positioning block 77 and located to the left of the limiting block 765, and a connecting rod 7611 that is provided between the arc-shaped block 769 and the second traction block 766. The two ends of the connecting rod 7611 are rotatably connected to the rear side of the arc-shaped block 769 and the front side of the second traction block 766, respectively. The arc-shaped outer wall of the arc-shaped block 769 is set to the left. The upper and lower ends of the guide pin 7610 are movably connected to the fourth positioning block 77 and have the function of forward and backward translation.

[0037] A first limiting groove 7651 is provided on the front side of the limiting block 765. A second limiting groove 7652 is provided on the left edge of the bottom surface of the first limiting groove 7651. An L-shaped corner cavity 7653 is provided between the middle of the bottom surface of the second limiting groove 7652 and the middle of the bottom surface of the first limiting groove 7651. Correspondingly, a stop block 7691 is formed on the right side of the front end of the arc-shaped block 769 towards the limiting block 765. An L-shaped notch 7692 that cooperates with the L-shaped corner cavity 7653 is provided at the rear corner of the end of the stop block 7691.

[0038] The alignment component 75 includes a first slider 751 movably connected to the front side of the first positioning block 71 to have the function of vertical movement, a first core-pulling cylinder 753 fixed on the upper outer wall of the moving module 1, and a first alignment post 752 obliquely inserted into the first positioning block 71. The telescopic end of the first core-pulling cylinder 753 is vertically downward and fixed on the first slider 751. The first alignment post 752 is set with the front higher than the rear. The front end of the first alignment post 752 is movably connected to the first slider 751 to have the function of tilting forward and backward while keeping the left and right positions unchanged. The rear end of the first alignment post 752 forms a first forming post 7521 outward.

[0039] The linkage module also includes a seat block 767 fixed on the rear outer wall of the fourth positioning block 77 and located to the left of the bow-shaped block 769, and a second alignment post 768 obliquely inserted in the seat block 767. The second alignment post 768 is set with the front higher than the rear. The rear end of the second alignment post 768 is movably connected to the front side of the second traction block 766 so as to have the function of tilting and moving back and forth without changing the left and right position. The front end of the second alignment post 768 forms a second forming post 7681 that cooperates with the end of the first forming post 7521.

[0040] An extension column 7682 is formed outward from the end of the second forming column 7681.

[0041] A tapered protrusion 731 is formed on the front outer wall of the third positioning block 73, which is inclined upward. The second forming column 7681 is movably inserted into the third positioning block 73 and the tapered protrusion 731. The left and right sides of the fourth positioning block 77 are each provided with a splicing module 74 that cooperates with the tapered protrusion 731.

[0042] The splicing module 74 includes a second slider 741 movably connected to the front side of the fixed module 2 to have a left and right translation function, and a second core-pulling cylinder 742 fixed on the left or right outer wall of the fixed module 2. The telescopic end of the second core-pulling cylinder 742 is horizontally arranged and fixed on the second slider 741 in the direction of the second slider 741. A first extension block 7411 is formed outward on the side of the second slider 741 facing the fourth positioning block 77. A second extension block 7412 is formed upward on the upper side of the first extension block 7411 and is inclined and rearward.

[0043] The second extension block 7412 has a first semi-circular recess 7413 on its front edge, and a second semi-circular recess 7414 concentrically distributed on the outer edge of the bottom surface of the first semi-circular recess 7413. The second extension block 7412 has an open recess 7416 on its rear edge, and a tapered recess 7417 inclinedly distributed and cooperating with the outer wall of the tapered protrusion 731 on the outer edge of the bottom surface of the open recess 7416. A semi-circular groove 7415 cooperating with the outer circumferential surface of the first forming column 7521 is formed between the outer edge of the bottom surface of the tapered recess 7417 and the outer edge of the bottom surface of the second semi-circular recess 7414.

[0044] A left-right oriented oblique slot hole 7641 is provided between the upper and lower outer walls of the guide block 764. Both ends of the oblique slot hole 7641 form a straight extension section 7642 extending outward. A guide slot hole 7643 is formed between the oblique slot hole 7641 and the two straight extension sections 7642. The guide pin 7610 is vertically inserted into the guide slot hole 7643.

[0045] The main molding unit 8 includes a moving mold core 81 and a fixed mold core 82 respectively embedded on the rear side of the moving module 1 and the front side of the fixed module 2 and cooperating with each other, and an inner molding module 83 disposed between the fixed mold core 82 and the fixed module 2.

[0046] The inner forming module 83 includes a third slider 831 movably connected to the front of the fixed module 2 to have left and right translation function and located to the right of the fixed mold core 82, a third core-pulling cylinder 832 fixed to the outer wall of the right side of the fixed module 2, and a steering block 833 movably connected in the fixed mold core 82 to have front and back translation function. The rear side of the steering block 833 is movably connected to the third slider 831 to have left and right tilting function. The telescopic end of the third core-pulling cylinder 832 is arranged laterally to the left and fixed to the third slider 831.

[0047] A base 821 is formed on the front side of the fixed mold core 82. A positioning opening slot 822 is provided on the right edge of the end of the base 821. The inner molding module 83 also includes a locking block 834 disposed inside the positioning opening slot 822. The left end of the locking block 834 is rotatably connected in the positioning opening slot 822, and the right end of the locking block 834 is movably connected to the front side of the steering block 833.

[0048] The right end of the locking block 834 is provided with a U-shaped guide groove 8341. The rear corner of the right end of the locking block 834 is also provided with a guide notch 8342 that intersects with and communicates with the rear inner wall of the U-shaped guide groove 8341. Correspondingly, the front side of the steering block 833 forms a guide traction block 8331. The guide traction block 8331 moves through the guide notch 8342 and extends into the U-shaped guide groove 8341.

[0049] A vertically arranged traction pin 835 is also inserted and fixed in the guide traction block 8331. Both the upper and lower ends of the traction pin 835 are movably inserted into the U-shaped guide groove 8341. An inclined alignment forming cavity 8343 is opened on the outer wall of the left front side of the positioning block 834.

[0050] The front side of the moving module 1 is also provided with two anti-deviation units, which are respectively distributed on the left and right and located in front of the second sliders 741 in the two splicing modules 74. The anti-deviation unit includes a carrier block 78 fixed on the moving module 1 and a pressure block 79 fixed on the front side of the carrier block 78. A first semi-circular limiting groove 781 that is diagonally distributed is provided on the opposite outer wall of the carrier block 78 in the two anti-deviation units. Correspondingly, a second semi-circular limiting groove 791 that is diagonally distributed is provided on the opposite outer wall of the pressure block 79 in the two anti-deviation units. The second semi-circular limiting groove 791 on each pressure block 79 is concentrically arranged with the first semi-circular limiting groove 781 on a carrier block 78 on the same side.

[0051] Working principle:

[0052] The feed plate 4 and the base plate 5 are respectively installed on the action mechanism and the machine body of the injection molding machine. When the mold is closed, the action mechanism is operated to drive the feed plate 4 to move backward, and then the moving module 1 is driven to move backward and approach the fixed module 2 with the help of the flow divider block 3 until the two are joined together (existing technology). During the movement, the moving module 1 will also drive the first positioning block 71, the second positioning block 72 and the third positioning block 73 in the rubber ring forming unit 7 to move synchronously until the third positioning block 73 and the fourth positioning block 77 are joined together. At the same time, it will also drive the moving mold core 81 in the main body forming unit 8 to move synchronously until the end face of the moving mold core 81 and the end face of the fixed mold core 82 are joined together.

[0053] Next, the telescopic end of the third core-pulling cylinder 832 in the drive inner molding module 83 extends outward to drive the third slider 831 to move to the left, thereby driving the steering block 833 to move backward. Thus, with the cooperation of the traction pin 835 and the U-shaped guide groove 8341, the right end of the locking block 834 is forced to swing backward, thereby driving the left end of the locking block 834 to swing forward, so that the end of the insert rod inclined on the end face of the moving mold core 81 is inserted into the alignment molding cavity 8343. Subsequently, the molten plastic material enters between the moving mold core 81 and the fixed mold core 82 through the special gate in the feed plate 4 and the special runner in the flow divider block 3. After cooling, the main structure of the charging port cover assembly is formed (prior art).

[0054] After the main structure of the charging port cover assembly is formed, the telescopic end of the third core-pulling cylinder 832 is first driven to retract inward to drive the third slider 831 to move to the right. Then, in the same way, the left end of the locking block 834 is driven to swing backward so that the end of the insert rod inclined on the end face of the moving mold core 81 leaves the alignment forming cavity 8343. Next, in the same way, the action mechanism is operated to drive the moving module 1 to move forward to leave the fixed module 2, thereby causing the end face of the moving mold core 81 to separate from the end face of the fixed mold core 82. Then, the main structure of the formed charging port cover assembly is ejected forward by means of the ejection mechanism 6 (existing technology).

[0055] The main body of the removed charging port cover assembly is flipped back and forth and placed on the end face of the fourth positioning block 77 in the rubber ring forming unit 7; then the telescopic end of the positioning cylinder 762 in the drive limiting assembly 76 extends outward to drive the first traction block 763 and the second traction block 766 to move to the left with the help of the drive block 761. Since both the upper and lower ends of the guide pin 7610 are fixed on the fourth positioning block 77, and since the initial position of the guide pin 7610 is located at the left end of the guide slot 7643, when the guide block 764 moves to the left, it will force the guide pin 7610 to move along the guide slot 7643. 43 moves to the right, thereby forcing the front side of the limiting block 765 to swing to the left; at the same time, when the second traction block 766 moves to the left, it will drive the connecting rod 7611 to move synchronously, thereby causing the front side of the bow-shaped block 769 to swing to the right, so that the front side of the bow-shaped block 769 and the front side of the limiting block 765 come closer to each other, thereby causing the end of the stop block 7691 on the bow-shaped block 769 to pass through the cavity on the main structure of the charging port cover assembly and make the inner wall of the L-shaped notch 7692 fit against the inner wall of the L-shaped corner cavity 7653, thus completing the positioning of the main structure of the charging port cover assembly.

[0056] Subsequently, the telescopic end of the first core-pulling cylinder 753 in the drive alignment assembly 75 extends outward to drive the first slider 751 to move downward, thereby driving the end of the first alignment post 752 to move backward and downward, so that the first forming post 7521 on the first alignment post 752 passes between the first semi-circular limiting groove 781 on the carrier block 78 and the second semi-circular limiting groove 791 on the pressure block 79 in the two anti-deviation units; at the same time, during the leftward movement, the second traction block 766 will also drive the end of the second alignment post 768 to move forward and upward with the help of the seat block 767 until the end of the second forming post 7681 on the second alignment post 768 and the end of the first forming post 7521 are in contact with each other.

[0057] In addition, the telescopic ends of the second core-pulling cylinders 742 in the two splicing modules 74 are simultaneously driven to extend outwards to drive the two second sliders 741 to move toward the third positioning block 73 and move closer to each other until the ends of the two first extension blocks 7411 and the ends of the two second extension blocks 7412 are in contact with each other. At this time, the openings of the first semi-circular recess 7413, the second semi-circular recess 7414, the open recess 7416, the conical recess 7417 and the semi-circular groove 7415 on the two second extension blocks 7412 are all spliced ​​together, and the inner walls of the two conical recesses 7417 are in contact with the outer wall of the conical protrusion 731.

[0058] Subsequently, the molten rubber material enters the corresponding position on the main structure of the charging port cover assembly through a dedicated gate in the feed plate 4 and a dedicated runner in the flow divider block 3. After cooling, a rubber flange and a rubber pressure ring (existing technology) are formed at the aforementioned position. It is worth mentioning that the forming of the rubber flange and the rubber pressure ring is carried out simultaneously with the injection molding of the main structure of the charging port cover assembly, and the mold is closed and opened at the same time. After the mold is opened, the finished product with the rubber flange and the rubber pressure ring formed is taken out, while the main structure of the charging port cover assembly that has been injection molded is first taken out and then placed into the rubber ring forming unit 7 for rubber flange and rubber pressure ring forming. Finally, the mold is closed again, thus forming a cyclical production process.

[0059] This invention uses an integrated injection molding process to directly mold the rubber flange and rubber pressure ring onto the seat and pressure cover of the car charging port cover assembly, and connect them tightly to each other. This eliminates the need to separately mold and mold the rubber flange and rubber pressure ring, and also eliminates the need for manual pasting, thereby simplifying the production process, improving work efficiency, and reducing labor costs.

[0060] Meanwhile, the rubber flanges and rubber pressure rings, which are formed onto the seat cover and pressure cover through high-temperature injection molding, are not easy to fall off, thereby improving the firmness and ensuring that the sealing effect of the car charging port cover assembly can be maintained for a long time.

[0061] Furthermore, this invention integrates the plastic molding mold and the rubber molding mold into a single mold, thereby saving mold manufacturing costs and requiring only one injection molding machine. After mold closing, the plastic molding and rubber molding processes are carried out simultaneously. After mold separation, the main structure of the injection-molded charging port cover assembly is removed from the plastic molding position and directly placed into the rubber molding position. The rubber molding process is completed after the next mold closing. This eliminates one loading and unloading operation and shortens the process flow interval, further improving production efficiency.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention 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 the present invention.

Claims

1. An injection mold for an automotive charging port cover assembly, comprising a movable module and a fixed module that cooperate with each other and are respectively arranged front and rear, a flow divider block fixed to the front side of the movable module, a feed plate fixed to the front side of the flow divider block, a base plate disposed on the rear side of the fixed module, and an ejection mechanism disposed between the base plate and the fixed module, characterized in that: Between the moving module and the fixed module, there are rubber ring forming units and main body forming units respectively distributed vertically. The rubber ring forming unit includes a first positioning block and a second positioning block respectively fixed on the front and rear sides of the moving module and cooperating with each other, a third positioning block embedded in the second positioning block, and a fourth positioning block embedded on the front side of the fixed module. The rubber ring forming unit also includes a limiting component and an alignment component that cooperate with each other. The limiting component includes a drive block that is movably connected to the front side of the fixed module to have the function of left and right translation and is located behind the fourth positioning block, a first traction block and a second traction block that are fixed to the left side of the drive block and respectively arranged in front and behind, a positioning cylinder that is fixed on the outer wall of the right side of the fixed module, and a linkage module that is arranged between the first traction block and the second traction block. The telescopic end of the positioning cylinder is arranged laterally to the left and fixed on the drive block. The linkage module includes a guide block fixedly inserted in the first traction block, a guide pin vertically and movably inserted in the guide block to have the function of tilting left and right in the horizontal direction, a limiting block rotatably connected to the guide pin, an arc-shaped block concentrically and rotatably inserted in the fourth positioning block and located to the left of the limiting block, and a connecting rod between the arc-shaped block and the second traction block. The two ends of the connecting rod are rotatably connected to the rear side of the arc-shaped block and the front side of the second traction block, respectively. The arc-shaped outer wall of the arc-shaped block is set to the left. The upper and lower ends of the guide pin are movably connected to the fourth positioning block and have the function of forward and backward translation.

2. The injection mold for an automotive charging port cover assembly according to claim 1, characterized in that, The front side of the limiting block is provided with a first limiting groove, and the left edge of the bottom surface of the first limiting groove is provided with a second limiting groove. An L-shaped corner cavity is provided between the middle of the bottom surface of the second limiting groove and the middle of the bottom surface of the first limiting groove. Correspondingly, a stop is formed on the right side of the front end of the bow-shaped block in the direction of the limiting block. An L-shaped notch is provided at the rear corner of the end of the stop, which cooperates with the L-shaped corner cavity.

3. The injection mold for an automotive charging port cover assembly according to claim 1, characterized in that, The alignment component includes a first slider movably connected to the front side of the first positioning block to have the function of vertical movement, a first core-pulling cylinder fixed on the upper outer wall of the moving module, and a first alignment post obliquely inserted into the first positioning block. The telescopic end of the first core-pulling cylinder is vertically downward and fixed on the first slider. The first alignment post is set with the front higher than the rear. The front end of the first alignment post is movably connected to the first slider to have the function of tilting forward and backward while keeping the left and right positions unchanged. The rear end of the first alignment post forms a first forming post outward.

4. The injection mold for an automotive charging port cover assembly according to claim 3, characterized in that, The linkage module also includes a seat block fixed on the rear outer wall of the fourth positioning block and located to the left of the bow-shaped block, and a second alignment post obliquely inserted into the seat block. The second alignment post is set with the front higher than the rear. The rear end of the second alignment post is movably connected to the front side of the second traction block so as to have the function of tilting and moving forward and backward without changing the left and right position. The front end of the second alignment post forms a second forming post that cooperates with the end of the first forming post.

5. The injection mold for an automotive charging port cover assembly according to claim 4, characterized in that, The third positioning block has a tapered protrusion that is inclined upward on the front outer wall. The second forming column is movably inserted into the third positioning block and the tapered protrusion. The fourth positioning block also has a splicing module on both its left and right sides that cooperates with the tapered protrusion.

6. The injection mold for an automotive charging port cover assembly according to claim 5, characterized in that, The splicing module includes a second slider movably connected to the front of the fixed module to have left and right translation function, and a second core-pulling cylinder fixed on the left or right outer wall of the fixed module. The telescopic end of the second core-pulling cylinder is horizontally set towards the direction of the second slider and fixed on the second slider. A first extension block is formed outward on the side of the second slider facing the fourth positioning block, and a second extension block is formed upward on the upper side of the first extension block and inclined backward.

7. The injection mold for an automotive charging port cover assembly according to claim 1, characterized in that, The guide block has a left-right oriented oblique slot between its upper and lower outer walls. Both ends of the oblique slot have a straight extension section extending outwards. A guide slot is formed between the oblique slot and the two straight extension sections. The guide pin is vertically inserted into the guide slot.

8. The injection mold for an automotive charging port cover assembly according to claim 1, characterized in that, The main forming unit includes a moving mold core and a fixed mold core respectively embedded on the rear side of the moving module and the front side of the fixed module and cooperating with each other, and an inner forming module disposed between the fixed mold core and the fixed module; the inner forming module includes a third slider movably connected to the front side of the fixed module to have a left and right translation function and located to the right of the fixed mold core, a third core-pulling cylinder fixed to the outer wall of the right side of the fixed module, and a steering block movably connected in the fixed mold core to have a front and back translation function. The rear side of the steering block is movably connected to the third slider to have a left and right tilting movement function. The telescopic end of the third core-pulling cylinder is arranged laterally to the left and fixed to the third slider.

9. The injection mold for an automotive charging port cover assembly according to claim 8, characterized in that, The front side of the fixed mold core has a base formed forward, and the right edge of the end of the base has a positioning opening groove. The inner forming module also includes a locking block disposed inside the positioning opening groove. The left end of the locking block is rotatably connected in the positioning opening groove, and the right end of the locking block is movably connected to the front side of the steering block.

10. The injection mold for an automotive charging port cover assembly according to claim 9, characterized in that, The right end of the positioning block is provided with a U-shaped guide groove, and the rear corner of the right end of the positioning block is also provided with a guide notch that intersects with and communicates with the rear inner wall of the U-shaped guide groove. Correspondingly, the front side of the steering block forms a guide traction block, which moves through the guide notch and extends into the U-shaped guide groove. A vertically arranged traction pin is also inserted and fixed in the guide traction block, and both the upper and lower ends of the traction pin are movably inserted into the U-shaped guide groove. The left front outer wall of the positioning block is provided with inclined alignment forming cavities.

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