Liquid silicone injection mold structure of new energy vehicle charging port

Abstract

This invention provides a liquid silicone injection mold structure for a charging port of a new energy vehicle, belonging to the field of silicone injection mold technology. It includes a rear mold base, a front mold connected to the output end of an injection molding machine, and a connecting seat detachably fixed to the outer wall of the rear mold base. A rear mold mechanism is provided on the side of the connecting seat away from the rear mold base. The rear mold mechanism includes the rear mold and multiple mold cavities opened on the side of the rear mold base away from the connecting seat. A top frame mechanism is provided inside the mold cavity for ejecting the molded silicone sealing ring from the cavity. Through the above method, this invention can effectively separate the silicone sealing ring from the mold, effectively demolding the tightly adsorbed part inside the mold cavity, significantly reducing the probability of manual peeling. This not only reduces process time but also further reduces the potential damage to the precision molding texture on the surface of the mold cavity due to manual operation, reducing silicone residue and improving the injection molding quality of the silicone sealing ring.

Description

Technical Field

[0001] This invention relates to the field of silicone injection mold technology, and in particular to a liquid silicone injection mold structure for a charging port of a new energy vehicle. Background Technology

[0002] As a crucial interface for power replenishment, the sealing performance of the charging port in new energy vehicles directly affects safety and charging efficiency. Liquid silicone sealing rings, due to their excellent resistance to high and low temperatures, elasticity, and aging resistance, have become the core component for sealing charging ports. These sealing rings are typically integrally molded using liquid silicone injection molds, and the demolding process is a key step determining the production efficiency and product quality of the sealing rings.

[0003] In existing technologies, silicone sealing rings are demolded by lifting or air jetting after injection molding. However, because silicone sealing rings are frame-shaped and the material itself is elastic, when the molded silicone sealing ring adheres tightly to the mold cavity, lifting demolding only works on specific points within the silicone sealing ring. Air jetting demolding, due to the frame structure of the silicone sealing ring, can cause localized demolding, leading to air leakage and uneven pressure distribution within the mold cavity. This results in only localized demolding of the silicone sealing ring, while the tightly adhered parts, being far from the lifting or air jetting points, cannot be effectively separated from the mold. Therefore, manual peeling is required, which not only increases processing time but also may scratch the precision molding texture on the mold cavity surface, increasing silicone residue and affecting the injection molding quality of the silicone sealing ring.

[0004] Therefore, this application provides a liquid silicone injection mold structure for a new energy vehicle charging port to meet the requirements. Summary of the Invention

[0005] The technical problem this invention aims to solve is to provide a liquid silicone injection mold structure for charging ports of new energy vehicles. This addresses the issue that existing methods can only demold a localized area of ​​the silicone sealing ring, while the tightly adhered parts inside the mold cavity cannot be effectively separated from the mold due to their distance from the lifting or air jet demolding point. This necessitates manual peeling, which not only increases the processing time but also risks scratching the precision molding texture on the mold cavity surface. Furthermore, if residual silicone is not thoroughly cleaned before entering the next injection molding cycle, it affects the injection molding quality of the silicone sealing ring.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A liquid silicone injection mold structure for a charging port of a new energy vehicle includes a rear mold base, a front mold connected to the output end of an injection molding machine, and a connecting seat detachably fixed to the outer wall of the rear mold base. A rear mold mechanism is provided on the side of the connecting seat away from the rear mold base. The rear mold mechanism includes a rear mold and multiple mold cavities opened on the side of the rear mold base away from the connecting seat. A top frame mechanism is provided inside the mold cavity for ejecting the molded silicone sealing ring from the mold cavity. The top frame mechanism includes a demolding frame movably connected inside the mold cavity, so that the bottom of the molding area of ​​the mold cavity is movable.

[0008] The demolding frame is equipped with a demolding mechanism for separating the silicone sealing ring adsorbed on the top of the demolding frame;

[0009] The bottom of the top frame mechanism is equipped with a pushing mechanism, which works in conjunction with the top frame mechanism and the demolding mechanism to form a multi-stage demolding process that first pushes the demolding frame upward, and then pushes the demolding mechanism upward.

[0010] The bottom of the pushing mechanism is equipped with a linkage mechanism, which works in conjunction with the demolding mechanism to simultaneously separate the silicone sealing rings adsorbed on the demolding mechanism and the demolding frame by shoveling and peeling.

[0011] Optionally, a storage groove is provided on the side of the rear mold away from the connecting seat, and the storage groove is connected to multiple mold cavities. The top frame mechanism includes a connecting frame that is slidably connected inside the storage groove, and the connecting frame is fixedly connected to multiple demolding frames.

[0012] Optionally, the top frame mechanism also includes a lifting cylinder fixed to the bottom of the connecting frame. A spring plate is fixedly connected to the bottom of the lifting cylinder. The lifting cylinder slides through to the side of the rear mold base away from the rear mold. A primary spring is fixedly connected between the spring plate and the rear mold base. A secondary spring is fixedly connected to the side of the spring plate away from the primary spring. A base frame is fixedly connected to the end of the secondary spring away from the spring plate. Multiple connecting rods are fixedly connected to the side of the front mold near the rear mold base. A pressing frame is fixedly connected to the end of the multiple connecting rods away from the front mold. The pressing frame abuts against the base frame.

[0013] Optionally, the pushing mechanism includes two sets of receiving holes opened on each demolding frame. The two sets of receiving holes are distributed adjacently, and are divided into a longer set of receiving holes and a shorter set of receiving holes. An insertion groove is opened on the inner wall of the receiving hole. The demolding mechanism includes front and rear pusher bars that are slidably connected inside the longer set of receiving holes. Front and rear insertion rods are fixedly connected to the outer wall of the front and rear pusher bars. The front and rear insertion rods are inserted into the insertion groove inside the longer set of receiving holes. Connecting strips are fixedly connected to the bottom of the front and rear pusher bars on multiple demolding frames, and all front and rear pusher bars and front and rear insertion rods are arranged in the same direction.

[0014] Optionally, the shorter receiving hole has left and right push strips slidably connected inside, and left and right insertion rods are fixedly connected to the outer walls of the left and right push strips. The left and right insertion rods are used in conjunction with the insertion slots inside the shorter receiving hole. The bottom of the left and right push strips on multiple demolding frames is fixedly connected to mating connecting strips, and the intersection of the mating connecting strips and the connecting strips is provided with an interlocking part.

[0015] The rear mold has through holes at the connection points between the left and right pusher bars, the front and rear pusher bars and the mold cavity.

[0016] Optionally, a soil-shaped secondary push plate is detachably fixed to the bottom of the connecting strip. A sliding hole is provided at the connection between the soil-shaped secondary push plate and the lifting cylinder. The linkage mechanism includes a front sliding hole plate 1 fixed to the connecting strip. A front sliding hole plate 2 is fixedly connected to the outer wall of the soil-shaped secondary push plate. Front connecting rods are movably connected inside both the front sliding hole plate 1 and the front sliding hole plate 2. The ends of the two front connecting rods away from the front sliding hole plate 2 are rotatably connected to the matching connecting strip. A control plate is fixedly connected to the side of the soil-shaped secondary push plate away from the front sliding hole plate 2. The control plate slides through the rear mold to the outside. A connecting part is fixedly connected to the side of the control plate away from the soil-shaped secondary push plate. A strip-shaped hole is provided at the connection between the connecting part and the rear mold base. An electric push rod is fixedly connected to the outer wall of the base frame. The output end of the electric push rod is slidably connected to the connecting part.

[0017] Optionally, two rear sliding plates are fixedly connected to the side of the second-stage push plate away from the front sliding plate. The rear sliding plates are movably connected to rear connecting rods, and the ends of the two rear connecting rods away from the rear sliding plates are rotatably connected to the mating connecting strip.

[0018] Optionally, the pushing mechanism includes multiple lifting holes opened on the outer wall of the lifting cylinder near one end of the connecting frame. A top plate is slidably connected inside the multiple lifting holes. A top column is fixedly connected to the bottom of the top plate. The bottom of the top column is fixedly connected to the base frame, and the top of the top plate abuts against the soil-shaped secondary push plate.

[0019] Optionally, the demolding frame is provided with an ejector mechanism, which includes three shrinkage holes on the top of the demolding frame. Air passages are provided on the inner wall of the insertion slot away from the receiving hole, and the air passages are connected to the shrinkage holes. A limit groove is provided on the inner wall of the shrinkage hole. A limit slider is slidably connected inside the limit groove. An ejector is fixedly connected to the outer wall of the limit slider. The ejector is slidably connected to the inside of the shrinkage hole, and the bottom of the ejector is located above the air passages. An air hole is provided on the top of the ejector. A return spring is fixedly connected between the inner wall of the top and the bottom of the shrinkage hole. A sealing rod is fixedly connected to the inner wall of the bottom of the shrinkage hole, and the sealing rod is inserted into the air hole.

[0020] The front and rear insertion rods are equipped with air passages, and the ends of the air passages are equipped with one-way valves. When the front and rear insertion rods are inserted into the insertion slots, the one-way valves are closed due to the reverse thrust of the air pressure inside the insertion slots. When the front and rear insertion rods are removed from the insertion slots, the one-way valves will open.

[0021] Compared with the prior art, the present invention has at least the following beneficial effects:

[0022] In the above solution, by replacing the existing push rods with large-area front and rear pusher bars and left and right pusher bars, the contact area between the demolding mechanism and the silicone sealing ring during the lifting process is increased, thereby improving the demolding effect. When the push rod rises to its maximum height, the front and rear pusher bars and the left and right pusher bars will correspond to the insertion slots inside the two sets of receiving holes, respectively. The bottoms of the front and rear pusher bars and the left and right pusher bars are located at the top of the demolding frame, and during the movement of the base frame, they drive the electric push rod to move synchronously. The output end of the electric push rod will slide to connect with the connecting part, thereby applying a pushing force to the connecting part through the electric push rod. The control board pulls the second-stage push plate of the earth-shaped mold to move inside the rear mold. Since the second-stage push plate of the earth-shaped mold is connected to the connecting bar by bolts, it can directly pull the front and rear pusher bars and the front and rear pusher bars to move inside the longer set of receiving holes, so that the front and rear pusher bars insert into the insertion slots inside the longer set of receiving holes. At the same time, the front and rear pusher bars slide on the top of the demolding frame to scoop. The method involves separating the silicone sealing rings adsorbed on the top of the demolding frame. As the front and rear pusher bars move, the silicone sealing rings adsorbed on the top of the pusher bars are simultaneously peeled off. When the secondary pusher plate moves multiple connecting bars, a linkage mechanism can drive the mating connecting bars to move laterally, causing the left and right pusher bars and left and right insertion rods to move inside another set of shorter receiving holes. This allows the left and right insertion rods to insert into the insertion slots inside the other set of shorter receiving holes, demolding the silicone sealing rings adsorbed on adjacent sides of the same demolding frame. This further improves the demolding effect. Through this method, the silicone sealing rings can be effectively separated from the mold, effectively demolding the tightly adsorbed parts inside the mold cavity, significantly reducing the probability of manual peeling. This not only reduces process time but also further reduces the potential damage to the precision molding texture of the mold cavity surface caused by manual operation, reducing silicone residue and improving the injection molding quality of the silicone sealing rings.

[0023] After the insert rods enter the insertion slot, they move like pistons, pushing the gas inside the slot into the shrinkage hole through the air passage. The air pressure inside the shrinkage hole pushes the ejector cylinder upward, causing the limit slider to slide inside the limit groove. The limit groove limits the maximum height of the ejector cylinder, preventing it from completely detaching from the shrinkage hole and becoming unable to return to its original position. During the upward movement of the ejector cylinder, the silicone sealing ring adsorbed at the top corner of the demolding frame is demolded, significantly reducing demolding dead angles and further improving the demolding effect. After the ejector cylinder rises, the air hole separates from the sealing rod, allowing the gas inside the shrinkage hole to be ejected from the air hole. This further separates the silicone sealing gasket adsorbed on the upper part of the ejector cylinder. At the same time, the gas ejected from the air hole is blocked by the silicone sealing gasket at the top of the ejector cylinder and diffuses downward and outward. The ejected gas can simultaneously blow away the top corner of the demolding frame and the attached trace amounts of silicone debris, reducing the possibility of debris being mixed into the new product during the next liquid silicone injection molding process and affecting the production quality of the silicone sealing gasket.

[0024] After silicone injection molding, the front mold and rear mold mechanisms separate, and the front mold drives the pressing frame to move synchronously via a connecting rod. After the front mold moves a certain distance, the pressing frame will abut against the base frame. As the front mold continues to move, the pressing frame presses against the base frame. Since the elastic force of the first-stage spring is less than that of the second-stage spring, the thrust on the base frame is directly transmitted to the lifting cylinder through the second-stage spring and spring plate. This causes the lifting cylinder to slide through the top plate, sliding hole, and receiving groove, compressing the first-stage spring. This causes the demolding frame to rise inside the mold cavity, pushing out the silicone sealing ring inside the mold cavity. By replacing the existing mold cavity with a combination of mold cavity and demolding frame, the bottom of the mold cavity can be lifted directly during demolding, and the molded silicone sealing ring can be pushed out of the mold cavity directly. There is no need for manual demolding of the silicone sealing ring inside the mold cavity, avoiding damage caused by prying, pulling, and tearing of the silicone sealing ring caused by manual demolding. This facilitates the demolding of the molded silicone sealing ring and improves the yield of silicone sealing rings. Attached Figure Description

[0025] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the front mold structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the rear mold base structure of the present invention;

[0029] Figure 4 This is a schematic diagram of the rear mold mechanism of the present invention;

[0030] Figure 5 This is a schematic diagram showing the cooperation between the rear mold mechanism and the top frame mechanism of the present invention;

[0031] Figure 6 This is a schematic diagram of the top frame mechanism of the present invention;

[0032] Figure 7 This is a partial cross-sectional view of the driving mechanism of the present invention;

[0033] Figure 8 for Figure 7 Enlarged view of point A in the middle;

[0034] Figure 9 This is a schematic diagram of the top cylinder mechanism of the present invention;

[0035] Figure 10This is a schematic diagram showing the cooperation between the push plate and the demolding mechanism of the present invention;

[0036] Figure 11 This is a schematic diagram of the cooperation between the push plate and the linkage mechanism of the present invention;

[0037] Figure 12 This is a schematic diagram of the demolding mechanism of the present invention.

[0038] Figure Labels

[0039] 1. Rear mold base; 101. Strip hole; 102. Connecting seat; 2. Rear mold mechanism; 201. Rear mold; 202. Mold cavity; 203. Through hole; 204. Storage slot; 3. Front mold; 4. Top frame mechanism; 401. Connecting frame; 402. Demolding frame; 403. Lifting cylinder; 404. Spring plate; 405. Secondary spring; 406. Base frame; 407. Primary spring; 408. Connecting rod; 409. Pressing frame; 5. Pushing mechanism; 501. Lifting hole; 502. Top plate; 503. Top column; 504. Storage hole; 505. Insertion slot; 506. Earth-shaped secondary push plate; 507. Sliding hole; 6. Demolding mechanism; 601, front and rear pusher bars; 602, front and rear insertion rods; 603, connecting bar; 604, left and right pusher bars; 605, left and right insertion rods; 606, mating connecting bar; 7, ejector mechanism; 701, air passage; 702, shrinkage hole; 703, limiting slide groove; 704, ejector; 705, limiting slider; 706, air hole; 707, return spring; 708, sealing rod; 8, linkage mechanism; 801, front sliding hole plate one; 802, front sliding hole plate two; 803, front connecting rod; 804, rear sliding hole plate; 805, rear connecting rod; 806, control board; 807, connecting part; 808, electric push rod.

[0040] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0041] The liquid silicone injection mold structure for a charging port of a new energy vehicle provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0042] It should be noted that embodiments referred to in the specification as "an embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," etc., may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0043] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0044] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0045] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0046] Example 1, such as Figures 1 to 10As shown, an embodiment of the present invention provides a liquid silicone injection mold structure for a charging port of a new energy vehicle, including a rear mold base 1, a front mold 3 connected to the output end of an injection molding machine, and a connecting seat 102 detachably fixed to the outer wall of the rear mold base 1. A rear mold mechanism 2 is provided on the side of the connecting seat 102 away from the rear mold base 1. The rear mold mechanism 2 includes a rear mold 201 and a plurality of mold cavities 202 opened on the side of the rear mold base 1 away from the connecting seat 102. A top frame mechanism 4 is provided inside the mold cavity 202 for ejecting the molded silicone sealing ring from the mold cavity 202. The top frame mechanism 4 includes a demolding frame 402 movably connected inside the mold cavity 202, making the bottom of the molding area of ​​the mold cavity 202 movable. A receiving groove 204 is provided on the side of mold 201 away from the connecting seat 102, and the receiving groove 204 communicates with multiple mold cavities 202. The top frame mechanism 4 includes a connecting frame 401 slidably connected inside the receiving groove 204. The connecting frame 401 is fixedly connected to multiple demolding frames 402. The top frame mechanism 4 also includes a lifting cylinder 403 fixedly attached to the bottom of the connecting frame 401. A spring plate 404 is fixedly connected to the bottom of the lifting cylinder 403. The lifting cylinder 403 slides through to the side of the rear mold base 1 away from the rear mold 201. A primary spring 407 is fixedly connected between the spring plate 404 and the rear mold base 1. A secondary spring 405 is fixedly connected to the side of the spring plate 404 away from the primary spring 407. A base frame 406 is fixedly connected to the end of the secondary spring 405 away from the spring plate 404. Multiple connecting rods 408 are fixedly connected to the side of the front mold 3 near the rear mold base 1. A pressing frame 409 is fixedly connected to the end of each connecting rod 408 away from the front mold 3. The pressing frame 409 abuts against the base frame 406. After silicone injection molding is completed, the front mold 3 separates from the rear mold mechanism 2, and the front mold 3 drives the pressing frame 409 to move synchronously via the connecting rods 408. After the front mold 3 moves a certain distance, the pressing frame 409 abuts against the base frame 406. As the front mold 3 continues to move, the pressing frame 409 presses against the base frame 406. Because the elastic force of the primary spring 407 is less than that of the secondary spring 405, the base frame 406 is pressed down. The thrust received by the frame 406 is directly transmitted to the lifting cylinder 403 through the secondary spring 405 and the spring plate 404, causing the lifting cylinder 403 to slide through the top plate 502, the sliding hole 507 and the receiving groove 204, and compressing the primary spring 407. This causes the demolding frame 402 to rise inside the mold cavity 202, and the silicone sealing ring inside the mold cavity 202 is pushed out through the demolding frame 402. By replacing the mold cavity part of the existing technology with a combination of the mold cavity 202 and the demolding frame 402, the bottom of the mold cavity 202 can be lifted directly during demolding, and the molded silicone sealing ring can be pushed out of the mold cavity 202 directly without manual demolding of the silicone sealing ring inside the mold cavity 202.

[0047] like Figure 1 , Figure 2 , Figures 5 to 7As shown, the top frame mechanism 4 has a pushing mechanism 5 at its bottom, which cooperates with the top frame mechanism 4 and the demolding mechanism 6 to form a multi-stage demolding process, first pushing the demolding frame 402 upward, and then pushing the demolding mechanism 6 upward. The pushing mechanism 5 includes multiple lifting holes 501 opened on the outer wall of the lifting cylinder 403 near the connecting frame 401. A top plate 502 is slidably connected inside the multiple lifting holes 501. A top column 503 is fixedly connected to the bottom of the top plate 502. The bottom of the top column 503 is fixedly connected to the base frame 406, and the top of the top plate 502 is flush with the base frame 406. The secondary push plate 506 abuts against each other. The pushing mechanism 5 includes two sets of receiving holes 504 opened on each demolding frame 402. The two sets of receiving holes 504 are distributed adjacently, and are divided into a longer set of receiving holes 504 and a shorter set of receiving holes 504. The inner wall of the receiving hole 504 is provided with an insertion groove 505. The demolding frame 402 is provided with a demolding mechanism 6 for separating the silicone sealing ring adsorbed on the top of the demolding frame 402. The demolding mechanism 6 includes front and rear push strips 601 slidably connected inside the longer set of receiving holes 504. The outer wall of the rear pusher bar 601 is fixedly connected to the front and rear insertion rods 602. The front and rear insertion rods 602 are inserted into the insertion slots 505 inside a set of longer receiving holes 504. The bottom of the front and rear pusher bars 601 on multiple demolding frames 402 is fixedly connected to the connecting strips 603, and all the front and rear pusher bars 601 and the front and rear insertion rods 602 are arranged in the same direction. After the silicone sealing ring is pushed out of the mold cavity 202, the base frame 406 is continuously pressed by the pressing frame 409, which will compress the secondary spring 405 and push the top column 503 into the lifting cylinder 403. The sliding mechanism 6 is pushed up by the top plate 502 to raise the secondary push plate 506. The secondary push plate 506 supports the bottom of the connecting strip 603 and the mating connecting strip 606, pushing the demolding mechanism 6 to rise as a whole. This causes the front and rear push strips 601 and the left and right push strips 604 to rise inside the two sets of receiving holes 504 respectively. The silicone sealing strip at the top of the demolding frame 402 is further lifted and demolded. The rear mold 201 has a through hole 203 at the connection between the left and right push strips 604, the front and rear push strips 601 and the mold cavity 202.

[0048] like Figures 5 to 7 and Figures 10 to 12As shown, a soil-shaped secondary push plate 506 is detachably fixed to the bottom of the connecting strip 603. A sliding hole 507 is provided at the connection between the soil-shaped secondary push plate 506 and the lifting cylinder 403. A linkage mechanism 8 is provided at the bottom of the pushing mechanism 5, which is used to cooperate with the demolding mechanism 6 to simultaneously separate the silicone sealing rings adsorbed on the demolding mechanism 6 and the demolding frame 402 by shoveling and peeling. The linkage mechanism 8 includes a front sliding hole plate 801 fixed to the connecting strip 603, and a front sliding hole plate 802 fixedly connected to the outer wall of the soil-shaped secondary push plate 506. Both the front sliding hole plate 801 and the front sliding hole plate 802 are movable inside. The system is dynamically connected by front connecting rods 803. The ends of the two front connecting rods 803 furthest from the second front sliding plate 802 are rotatably connected to the connecting strip 606. A control plate 806 is fixedly connected to the side of the second soil-shaped push plate 506 furthest from the second front sliding plate 802. The control plate 806 slides through the rear mold 201 to the outside. A connecting part 807 is fixedly connected to the side of the control plate 806 furthest from the second soil-shaped push plate 506. A slotted hole 101 is provided at the connection point between the connecting part 807 and the rear mold base 1. An electric actuator 808 is fixedly connected to the outer wall of the base frame 406. The output end of the electric actuator 808 is connected to the connecting part 806. 7. Sliding connection: When the top column 503 rises to its maximum height, the front and rear insertion rods 602 and the left and right insertion rods 605 will correspond to the insertion slots 505 inside the two sets of receiving holes 504 respectively. The bottoms of the front and rear pusher bars 601 and the left and right pusher bars 604 are located at the top of the demolding frame 402. During the movement of the base frame 406, the electric push rod 808 moves synchronously. The output end of the electric push rod 808 will slide with the connecting part 807, thereby applying a pushing force to the connecting part 807 through the electric push rod 808. The control plate 806 pulls the second-stage push plate 506 inside the rear mold 201. The movement is achieved because the secondary push plate 506 and the connecting strip 603 are connected by bolts, which can directly pull the front and rear push strips 601 and the front and rear insertion rods 602 to move inside the longer set of receiving holes 504. This allows the front and rear insertion rods 602 to insert into the insertion slots 505 inside the longer set of receiving holes 504. At the same time, the front and rear push strips 601 slide on the top of the demolding frame 402, separating the silicone sealing rings adsorbed on the top of the demolding frame 402 in a shoveling manner. As the front and rear push strips 601 move, the silicone sealing rings adsorbed on the top of the front and rear push strips 601 are also separated by peeling.

[0049] like Figures 5 to 7 and Figures 10 to 12As shown, two rear sliding plates 804 are fixedly connected to the side of the earth-shaped secondary push plate 506 away from the front sliding plate 802. Rear connecting rods 805 are movably connected inside the rear sliding plates 804. The ends of the two rear connecting rods 805 away from the rear sliding plates 804 are rotatably connected to the mating connecting strips 606. Left and right push strips 604 are slidably connected inside the shorter receiving hole 504. Left and right insertion rods 605 are fixedly connected to the outer walls of the left and right push strips 604. The left and right insertion rods 605 are connected to the insertion grooves 505 inside the shorter receiving hole 504. In conjunction with each other, the bottom of the left and right pusher strips 604 on the multiple demolding frames 402 are fixedly connected to the mating connecting strips 606, and the intersection of the mating connecting strips 606 and the connecting strips 603 is provided with an interlocking part. When the earth-shaped secondary push plate 506 drives the multiple connecting strips 603 to slide, the rear sliding plate 804 will slide with the rear connecting rod 805, the front sliding plate 802 will slide with the front connecting rod 803, and one of the connecting strips 603 will slide on another front connecting rod 803 through the front sliding plate 801 during the movement. When the connecting strip 603 and After the secondary push plate 506 slides a certain distance, the two rear sliding plates 804 apply a thrust to the two rear connecting rods 805. The second front sliding plate 802 and the first front sliding plate 801 on one of the connecting bars 603 apply thrust to the two front connecting rods 803 respectively, causing the rear connecting rods 805 to rotate inside the rear sliding plates 804 and the two front connecting rods 803 to rotate inside the second front sliding plate 802 and the first front sliding plate 801 respectively. This causes the angles of the rear connecting rods 805 and the front connecting rods 803 to gradually become perpendicular to the mating connecting bar 606. In this state, the connecting strip 606 can be pushed to move laterally, causing the left and right pusher strips 604 and the left and right insertion rods 605 to move inside another set of shorter receiving holes 504. This allows the left and right insertion rods 605 to insert into the insertion slots 505 inside the other set of shorter receiving holes 504, and the silicone sealing rings adsorbed on the adjacent sides of the same demolding frame 402 to be demolded, further improving the demolding effect. It can also effectively separate the silicone sealing rings from the mold, effectively demolding the parts that are tightly adsorbed inside the mold cavity, and greatly reducing the probability of manual peeling.

[0050] The working principle of the technical solution provided by this invention is as follows:

[0051] After silicone injection molding is completed, the front mold 3 separates from the rear mold mechanism 2, and the front mold 3 drives the pressing frame 409 to move synchronously via the connecting rod 408. After the front mold 3 moves a certain distance, the pressing frame 409 will abut against the base frame 406. As the front mold 3 continues to move, the pressing frame 409 presses against the base frame 406. Due to the smaller elasticity of the primary spring 407 compared to the secondary spring 405, the thrust on the base frame 406 is directly transmitted to the lifting cylinder 403 through the secondary spring 405 and the spring plate 404. This causes the lifting cylinder 403 to slide through the top plate 502, the sliding hole 507, and the receiving groove 204, and to... The primary spring 407 is compressed, thereby causing the demolding frame 402 to rise inside the mold cavity 202. The silicone sealing ring inside the mold cavity 202 is pushed out through the demolding frame 402. By replacing the mold cavity part of the existing technology with a combination of mold cavity 202 and demolding frame 402, the bottom of the mold cavity 202 can be lifted directly during demolding, and the molded silicone sealing ring can be pushed out of the mold cavity 202 directly. There is no need for manual demolding of the silicone sealing ring inside the mold cavity 202, avoiding damage caused by large-scale actions such as prying, pulling and tearing of the silicone sealing ring caused by manual demolding, and facilitating the demolding of the molded silicone sealing ring.

[0052] After the silicone sealing ring is pushed out of the mold cavity 202, the base frame 406 is continuously pressed by the pressing frame 409, which compresses the secondary spring 405 and pushes the top column 503 to slide inside the lifting cylinder 403. The top plate 502 pushes the earth-shaped secondary push plate 506 to rise. The earth-shaped secondary push plate 506 supports the bottom of the connecting strip 603 and the mating connecting strip 606, pushing the demolding mechanism 6 to rise as a whole. This causes the front and rear push strips 601 and the left and right push strips 604 to rise inside the two sets of receiving holes 504 respectively. The silicone sealing strip at the top of the demolding frame 402 is further lifted and demolded. By setting a large area front and rear push strips 601 and left and right push strips 604 to replace the push rod of the existing technology, the contact area between the demolding mechanism 6 and the silicone sealing ring during the lifting process is increased, thereby improving the demolding effect.

[0053] When the top pillar 503 rises to its maximum height, the front and rear insertion rods 602 and the left and right insertion rods 605 will correspond to the insertion slots 505 inside the two sets of receiving holes 504, respectively. The bottoms of the front and rear pusher bars 601 and the left and right pusher bars 604 are located at the top of the demolding frame 402, and during the movement of the base frame 406, the electric push rod 808 moves synchronously. The output end of the electric push rod 808 will slide and connect with the connecting part 807, thereby applying a pushing force to the connecting part 807 through the electric push rod 808. The control plate 806 pulls the second-stage push plate 506 to move inside the rear mold 201. The earth-shaped secondary push plate 506 and the connecting strip 603 are connected by bolts, which can directly pull the front and rear push strips 601 and the front and rear insertion rods 602 to move inside the longer set of receiving holes 504, so that the front and rear insertion rods 602 are inserted into the insertion slots 505 inside the longer set of receiving holes 504. At the same time, the front and rear push strips 601 slide on the top of the demolding frame 402, and in a shoveling manner, separate the silicone sealing ring adsorbed on the top of the demolding frame 402. As the front and rear push strips 601 move, the silicone sealing ring adsorbed on the top of the front and rear push strips 601 is also separated by peeling.

[0054] When the secondary push plate 506 drives multiple connecting bars 603 to slide, the rear sliding plate 804 slides with the rear connecting rod 805, the second front sliding plate 802 slides with the front connecting rod 803, and one of the connecting bars 603 slides on another front connecting rod 803 via the first front sliding plate 801 during movement. After the connecting bar 603 slides a certain distance with the secondary push plate 506, the two rear sliding plates 804 apply a pushing force to the two rear connecting rods 805. The second front sliding plate 802 and the first front sliding plate 801 on one of the connecting bars 603 respectively apply a pushing force to the two front connecting rods 803, causing the rear connecting rod 805 to rotate inside the rear sliding plate 804, and the two front connecting rods 803 to rotate inside the second front sliding plate 802 and the first front sliding plate 801 respectively, causing the rear connecting rod 805 and the front connecting rod 803 to rotate. As the angle of rod 803 gradually becomes perpendicular to the mating connecting strip 606, it can push the mating connecting strip 606 to move laterally, causing the left and right pusher strips 604 and the left and right insertion rods 605 to move inside another set of shorter receiving holes 504. This allows the left and right insertion rods 605 to insert into the insertion slots 505 inside the other set of shorter receiving holes 504, demolding the silicone sealing rings adsorbed on the adjacent sides of the same demolding frame 402. This further improves the demolding effect and also allows the silicone sealing rings to be effectively separated from the mold. This effectively demolds the tightly adsorbed parts inside the mold cavity, significantly reducing the probability of manual peeling. This not only reduces process time but also further reduces the potential damage to the precision forming texture on the surface of the mold cavity due to manual operation, reducing silicone residue and improving the injection molding quality of the silicone sealing rings.

[0055] Example 2, as Figures 5 to 9As shown, the demolding frame 402 is equipped with an ejector mechanism 7. The ejector mechanism 7 includes three shrinkage holes 702 formed at the top of the demolding frame 402. Air passages 701 are formed on the inner wall of the insertion slot 505 on the side away from the receiving hole 504, and the air passages 701 communicate with the shrinkage holes 702. A limiting groove 703 is formed on the inner wall of the shrinkage hole 702. A limiting slider 705 is slidably connected inside the limiting groove 703. An ejector cylinder 704 is fixedly connected to the outer wall of the limiting slider 705. The ejector cylinder 704 is slidably connected to the inside of the shrinkage hole 702, and the bottom of the ejector cylinder 704 is located above the air passages 701. A vent 706 is provided at the top of the top of the cylinder 704. A return spring 707 is fixedly connected between the inner wall of the top and the bottom of the contraction hole 702. When the top cylinder 704 rises, it stretches the return spring 707, facilitating the return of the top cylinder 704. A sealing rod 708 is fixedly connected to the inner wall of the bottom of the contraction hole 702, and the sealing rod 708 is inserted into the vent 706. An air passage is provided inside the front and rear insertion rods 602, and a one-way valve is provided at the end of the air passage. When the front and rear insertion rods 602 are inserted into the insertion groove 505, the one-way valve is closed due to the reverse thrust of the air pressure inside the insertion groove 505. 2. When the insertion slot 505 is removed, the one-way valve will open, facilitating the removal of the front and rear insertion rods 602 from the insertion slot 505. After the front and rear insertion rods 602 enter the insertion slot 505, they will move like pistons, pushing the gas inside the insertion slot 505 into the contraction hole 702 through the air passage 701. The air pressure inside the contraction hole 702 will push the top cylinder 704 upward, causing the limiting slider 705 to slide inside the limiting groove 703. The limiting groove 703 limits the maximum height of the top cylinder 704, preventing the top cylinder 704 from completely disengaging from the contraction hole 702 and failing to return to its original position. 4. During the upward movement, the silicone sealing ring adsorbed at the top corner of the demolding frame 402 will be demolded, greatly reducing the demolding dead angle. After the top cylinder 704 rises, the air hole 706 will separate from the sealing rod 708, so that the gas inside the shrinkage hole 702 will be ejected from the air hole 706, which can further separate the silicone sealing pad adsorbed on the upper part of the top cylinder 704. At the same time, the gas ejected from the air hole 706 will diffuse downwards and around after being blocked by the silicone sealing pad at the top of the top cylinder 704. The ejected gas can simultaneously blow away the top corner of the demolding frame 402 and the attached trace silicone debris.

[0056] The working principle of the technical solution provided by this invention is as follows:

[0057] After the front and rear insertion rods 602 enter the insertion slot 505, they will move like pistons, pushing the gas inside the insertion slot 505 into the shrinkage hole 702 through the air passage 701. The air pressure inside the shrinkage hole 702 will push the ejector cylinder 704 upward, causing the limiting slider 705 to slide inside the limiting groove 703. The limiting groove 703 limits the maximum height of the ejector cylinder 704, preventing the ejector cylinder 704 from completely disengaging from the shrinkage hole 702 and being unable to return to its original position. During the upward movement of the ejector cylinder 704, it will demold the silicone sealing ring adsorbed at the top corner of the demolding frame 402, greatly reducing the demolding dead angle. This further improves the demolding effect. After the ejector cylinder 704 rises, the air hole 706 will separate from the sealing rod 708, so that the gas inside the shrinkage hole 702 will be ejected from the air hole 706. This can further separate the silicone sealing gasket adsorbed on the upper part of the ejector cylinder 704. At the same time, the gas ejected from the air hole 706 will diffuse downwards and around after being blocked by the silicone sealing gasket at the top of the ejector cylinder 704. The ejected gas can simultaneously blow away the top corner of the demolding frame 402 and the attached trace silicone debris, reducing the debris from being mixed into the new product in the next liquid silicone injection molding process and affecting the production quality of the silicone sealing gasket.

[0058] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0059] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A liquid silicone injection mold structure for a charging port of a new energy vehicle, comprising a rear mold base (1), a front mold (3) connected to the output end of an injection molding machine, and a connecting seat (102) detachably fixed to the outer wall of the rear mold base (1), wherein a rear mold mechanism (2) is provided on the side of the connecting seat (102) away from the rear mold base (1), the rear mold mechanism (2) comprising a rear mold (201) and a plurality of mold cavities (202) opened on the side of the rear mold base (1) away from the connecting seat (102), characterized in that: The mold cavity (202) is provided with a top frame mechanism (4) for ejecting the molded silicone sealing ring from the mold cavity (202). The top frame mechanism (4) includes a demolding frame (402) movably connected inside the mold cavity (202), so that the bottom of the molding area of ​​the mold cavity (202) is movable. The demolding frame (402) is provided with a demolding mechanism (6) for separating the silicone sealing ring adsorbed on the top of the demolding frame (402). The top frame mechanism (4) is provided with a pushing mechanism (5) at the bottom, which is used to cooperate with the top frame mechanism (4) and the demolding mechanism (6) to form a multi-stage demolding process that first pushes the demolding frame (402) up and then pushes the demolding mechanism (6) up. The bottom of the pushing mechanism (5) is provided with a linkage mechanism (8), which is used to cooperate with the demolding mechanism (6) to simultaneously separate the silicone sealing rings adsorbed on the demolding mechanism (6) and the demolding frame (402) by shoveling and peeling. The rear mold (201) has a storage groove (204) on the side away from the connecting seat (102), and the storage groove (204) is connected to multiple mold cavities (202). The top frame mechanism (4) includes a connecting frame (401) that is slidably connected inside the storage groove (204), and the connecting frame (401) is fixedly connected to multiple demolding frames (402). The top frame mechanism (4) also includes a lifting cylinder (403) fixed to the bottom of the connecting frame (401). A spring plate (404) is fixedly connected to the bottom of the lifting cylinder (403). The lifting cylinder (403) slides through to the side of the rear mold base (1) away from the rear mold (201). A primary spring (407) is fixedly connected between the spring plate (404) and the rear mold base (1). A secondary spring (405) is fixedly connected to the side of the spring plate (404) away from the primary spring (407). The elastic force of the primary spring (407) is less than that of the secondary spring (405). A base frame (406) is fixedly connected to the end of the secondary spring (405) away from the spring plate (404). A plurality of connecting rods (408) are fixedly connected to the side of the front mold (3) close to the rear mold base (1). A pressing frame (409) is fixedly connected to the end of the plurality of connecting rods (408) away from the front mold (3). The pressing frame (409) abuts against the base frame (406). The pushing mechanism (5) includes two sets of receiving holes (504) opened on each demolding frame (402). The two sets of receiving holes (504) are distributed adjacently, and are divided into a longer set of receiving holes (504) and a shorter set of receiving holes (504). An insertion groove (505) is opened on the inner wall of the receiving hole (504). The demolding mechanism (6) includes front and rear pusher bars (601) slidably connected inside the longer set of receiving holes (504). Front and rear insertion rods (602) are fixedly connected to the outer wall of the front and rear pusher bars (601). The front and rear insertion rods (602) are inserted into the insertion grooves (505) inside the longer set of receiving holes (504). Connecting strips (603) are fixedly connected to the bottom of the front and rear pusher bars (601) on multiple demolding frames (402), and all front and rear pusher bars (601) and front and rear insertion rods (602) are arranged in the same direction. The shorter receiving hole (504) has a sliding connection of left and right pusher bars (604) inside. The outer wall of the left and right pusher bars (604) is fixedly connected to left and right insertion rods (605). The left and right insertion rods (605) are used in conjunction with the insertion grooves (505) inside the shorter receiving hole (504). The bottom of the left and right pusher bars (604) on multiple demolding frames (402) is fixedly connected to a mating connecting strip (606), and the intersection of the mating connecting strip (606) and the connecting strip (603) is provided with an interlocking part. Among them, the rear mold (201) has a through hole (203) at the connection between the left and right pusher bars (604), the front and rear pusher bars (601) and the mold cavity (202). The bottom of the connecting strip (603) is detachably fixed with a soil-shaped secondary push plate (506). A sliding hole (507) is provided at the connection between the soil-shaped secondary push plate (506) and the lifting cylinder (403). The linkage mechanism (8) includes a front sliding hole plate one (801) fixed on the connecting strip (603). A front sliding hole plate two (802) is fixedly connected to the outer wall of the soil-shaped secondary push plate (506). Front connecting rods (803) are movably connected inside both the front sliding hole plate one (801) and the front sliding hole plate two (802). The ends of the two front connecting rods (803) away from the front sliding hole plate two (802) are engaged with the front sliding hole plate two (802). The connecting strip (606) is rotatably connected. The control plate (806) is fixedly connected to the side of the soil-shaped secondary push plate (506) away from the front sliding hole plate (802). The control plate (806) slides through the rear mold (201) to the outside. The connecting part (807) is fixedly connected to the side of the control plate (806) away from the soil-shaped secondary push plate (506). A strip hole (101) is opened at the connection between the connecting part (807) and the rear mold base (1). An electric push rod (808) is fixedly connected to the outer wall of the base frame (406). The output end of the electric push rod (808) is slidably connected to the connecting part (807). The earth-shaped secondary push plate (506) is fixedly connected to two rear sliding plates (804) on the side away from the front sliding plate (802). The rear sliding plate (804) is movably connected to a rear connecting rod (805). The ends of the two rear connecting rods (805) away from the rear sliding plate (804) are rotatably connected to the mating connecting strip (606). The pushing mechanism (5) includes multiple lifting holes (501) on the outer wall of the lifting cylinder (403) near the end of the connecting frame (401). A top plate (502) is slidably connected inside the multiple lifting holes (501). A top column (503) is fixedly connected to the bottom of the top plate (502). The bottom of the top column (503) is fixedly connected to the base frame (406), and the top of the top plate (502) abuts against the earth-shaped secondary push plate (506).

2. The liquid silicone injection mold structure of the new energy vehicle charging port according to claim 1, characterized in that, The demolding frame (402) is provided with an upper cylinder mechanism (7). The upper cylinder mechanism (7) includes three shrinkage holes (702) opened on the top of the demolding frame (402). The inner wall of the insertion slot (505) away from the receiving hole (504) is provided with air passages (701), and the air passages (701) are connected to the shrinkage holes (702). The inner wall of the shrinkage hole (702) is provided with a limiting slide groove (703). The limiting slide groove (703) is slidably connected to the limiting slider (705). (705) A top cylinder (704) is fixedly connected to the outer wall. The top cylinder (704) is slidably connected to the inside of the contraction hole (702). The bottom of the top cylinder (704) is located above the air passage (701). An air hole (706) is opened on the top of the top cylinder (704). A return spring (707) is fixedly connected between the inner wall of the top and the bottom of the contraction hole (702). A sealing rod (708) is fixedly connected to the inner wall of the bottom of the contraction hole (702). The sealing rod (708) is inserted into the air hole (706). The front and rear insertion rods (602) are equipped with air passages, and the ends of the air passages are equipped with one-way valves. When the front and rear insertion rods (602) are inserted into the insertion groove (505), the one-way valve is closed due to the reverse thrust of the air pressure inside the insertion groove (505). When the front and rear insertion rods (602) are moved out of the insertion groove (505), the one-way valve is opened.

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