A die for compression molding and punching lightweight composite LWRT parts for automobiles

Abstract

This utility model relates to the field of automotive stamping die manufacturing technology, and in particular to a compression molding and punching die for lightweight composite LWRT parts for automobiles. It includes a lower die, an upper die, and an electrical control system. The lower die includes a lower die base assembly, a lower die core assembly, a lower die pressure frame assembly, and a lower die forming limiting mechanism. The upper die includes an upper die base assembly, an upper die core assembly, a floating die assembly, and an upper die pressure frame assembly, each assembly mounted on its corresponding die base. The electrical control system includes electrical control components for the lower die and upper die, respectively electrically connected to the lower die and upper die. Integrated production is achieved by combining the lower die, upper die, and electrical control system. The limiting block, in conjunction with a displacement sensor, enables time-sharing of forming and punching actions. The electrical control system communicates with the press equipment via a 16-pin socket, and, combined with the coordinated action of an induction plate, solenoid valve, and cylinder, achieves full-process automation, improving production efficiency and quality stability. This solves the problems of low forming and punching quality stability and difficulty in achieving high-efficiency production requirements associated with traditional processes.

Description

Technical Field

[0001] This utility model belongs to the field of automotive stamping die manufacturing technology, and in particular relates to a compression molding and punching die for automotive lightweight composite material LWRT parts. Background Technology

[0002] In the manufacturing of lightweight composite material (LWRT) parts for automobiles, there are currently three main traditional processes. The first is compression molding followed by trimming and punching. This method requires two machines and two sets of molds. The parts need to be left to shrink and set for more than 24 hours before trimming and punching, resulting in high labor and manufacturing costs and low production efficiency. The second method involves manual removal of waste material after compression molding / trimming. Although this only requires one machine and one set of molds, the cutting edge of the mold lacks a waste material removal function. A special structure needs to be designed to partially connect the waste material to the product, which is then manually removed. Furthermore, the cutting edge requires frequent maintenance; untimely or improper maintenance increases rework or cleaning processes, leading to increased costs and reduced efficiency. The third method involves compression molding and punching simultaneously. This method also requires only one machine and one set of molds. The molds have a waste removal function, and the blades require regular maintenance, which can reduce costs and improve efficiency. However, because the material is not completely cooled in the mold and has insufficient rigidity, problems such as waste being carried along with the parts and deformation of the parts at the punching position may occur, affecting the stability of the forming and punching quality.

[0003] These traditional processes and methods are inadequate in terms of equipment investment, production cycle, cost control, and quality stability, making it difficult to adapt to the needs of industrial automation upgrades and efficient production. Utility Model Content

[0004] In view of this, the present invention aims to provide a die for molding and punching lightweight composite LWRT parts for automobiles, so as to solve the problems of low quality stability of molding and punching by traditional process methods and difficulty in achieving high-efficiency production requirements.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows: This utility model provides a compression molding and punching die for lightweight composite LWRT parts for automobiles, including a lower die, an upper die, and an electrical control system. The lower die and the upper die are arranged correspondingly. The lower die includes a lower die base assembly, a lower die core assembly, a lower die pressure frame assembly, and a lower die forming limiting mechanism. The lower die core assembly, the lower die pressure frame assembly, and the lower die forming limiting mechanism are all mounted on the lower die base assembly. The upper die includes an upper die base assembly, an upper die core assembly, a floating die assembly, and an upper die pressure frame assembly. The upper die core assembly, the floating die assembly, and the upper die pressure frame assembly are all mounted on the upper die base assembly. The electrical control system is electrically connected to the lower die and the upper die of the molding die, respectively. The electrical control system includes a lower die electrical control component and an upper die electrical control component, wherein the lower die electrical control component is disposed on the lower die of the molding die, and the upper die electrical control component is disposed on the upper die of the molding die.

[0006] Furthermore, the lower mold base assembly includes a lower mold base body, a first lifting handle, a scrap box, a guide sleeve, a buffer, upper and lower mold connecting plates, and a storage limiter. The first lifting handle is disposed on opposite sides of the lower mold base body. The lower mold base body is provided with a scrap box groove, and the scrap box is disposed in the scrap box groove. The upper surface of the lower mold base body is provided with a mounting hole, and the guide sleeve is disposed in the mounting hole. The buffer is disposed on the edge of the upper surface of the lower mold base body, and multiple buffers are disposed at intervals along its circumference. Multiple upper and lower mold connecting plates are provided, and multiple upper and lower mold connecting plates are disposed on opposite sides of the lower mold base body for connecting the lower mold base assembly and the upper mold base assembly. The storage limiter is disposed on the outside of the lower mold base body.

[0007] Furthermore, the lower mold core assembly includes a lower mold core body, a lower mold cooling water collection block, and a lower mold connecting hose. The lower mold core body is disposed on the upper surface of the lower mold base body, and the lower mold core body is provided with a cutting edge and a forming surface. The lower mold cooling water collection block is disposed on the lower mold base body, and the side of the lower mold cooling water collection block is provided with a lower mold water inlet channel and a lower mold water return channel. The lower mold cooling water collection block is also provided with a lower mold water inlet and a lower mold water return outlet. The lower mold water inlet communicates with the lower mold water inlet channel, and the lower mold water return outlet communicates with the lower mold water return channel. At least a portion of the lower mold connecting hose is disposed inside the lower mold core body, and one end of the lower mold connecting hose is connected to the lower mold water inlet, and the other end is connected to the lower mold water return outlet.

[0008] Furthermore, the lower die pressing frame assembly includes a lower die pressing frame body, a material positioning plate, and a pressing frame ejector. The lower die pressing frame body surrounds the outer side of the lower die core body. The material positioning plate is installed on the outer surface of the frame of the lower die pressing frame body for positioning the molding material. The pressing frame ejector is disposed on the frame, with one end connected to the outer surface of the frame and the other end connected to the lower die base body, providing elastic support for the lower die pressing frame body.

[0009] Furthermore, the lower mold forming limiting mechanism includes a lower mold forming limiting block, a forming limiting action cylinder, a displacement sensor, and a lower mold air collecting block. The forming limiting action cylinder is installed on the upper surface of the lower mold base body, and its output end is connected to the lower mold forming limiting block to drive the lower mold forming limiting block to perform linear displacement. The displacement sensor is installed on the forming limiting action cylinder to provide real-time feedback on the displacement state of the lower mold forming limiting block. The lower mold air collecting block is disposed on the lower mold base body and electrically connected to the lower mold electrical control system. The lower mold air collecting block is connected to the air passage interface of the forming limiting action cylinder through a first air pipe.

[0010] Furthermore, the lower mold electrical control assembly includes a lower mold electrical control box, a 16-pin socket A, a first solenoid valve, and a first sensing plate. The lower mold electrical control box, the 16-pin socket A, and the first solenoid valve are all installed on the lower mold base body, and the 16-pin socket A, the first solenoid valve, and the first sensing plate are respectively electrically connected to the lower mold electrical control box. The 16-pin socket A is used for communication connection with the press equipment. The first solenoid valve is used to receive control commands from the lower mold electrical control box to control the air circuit opening and closing of the forming limit cylinder, thereby driving the action of the forming limit cylinder. The first sensing plate is installed on the upper surface edge of the lower mold base body to sense the positioning status of the upper mold of the molding die and feed it back to the lower mold electrical control box.

[0011] Furthermore, the upper mold base assembly includes an upper mold base body, a second lifting handle, a guide post, an upper mold forming limiting block, and a floating mold hard limiter. The second lifting handle is disposed on opposite sides of the upper mold base body. The guide post is disposed on the lower surface of the upper mold base body and is disposed corresponding to the guide sleeve. The upper mold forming limiting block is disposed on the lower surface of the upper mold base body and is disposed corresponding to the lower mold forming limiting block. The floating mold hard limiter is disposed on the lower surface of the upper mold base body and is used to limit the floating mold assembly.

[0012] Furthermore, the upper mold core assembly includes an upper mold core body, an upper mold cutting edge, a punch, a fixing seat, and a material hanging pin. The upper mold core body is mounted on the lower surface of the upper mold base body. The upper mold cutting edge is disposed on the lower surface of the upper mold core body and corresponds to the cutting edge of the lower mold core body. Multiple fixing seats are provided, and all of the multiple fixing seats are disposed on the lower surface of the upper mold base body. The punch is disposed in a one-to-one correspondence with the fixing seat, and each punch is fixed on its corresponding fixing seat. Multiple material hanging pins are provided, and the multiple material hanging pins are distributed circumferentially at intervals along the upper mold cutting edge and are mounted on the lower surface of the upper mold core body.

[0013] Furthermore, the upper mold floating mold assembly includes a floating mold body, a nitrogen spring assembly, a floating mold guide assembly, an upper mold cooling water collection block, and an upper mold connecting hose. The floating mold body is disposed on the lower surface of the upper mold base body, and a hydraulic cylinder is provided between the floating mold body and the upper mold base body. The hydraulic cylinder is disposed on the lower surface of the upper mold base body, and its output end is connected to the upper surface of the floating mold body. The nitrogen spring assembly is disposed between the upper mold base body and the floating mold body, with one end of the nitrogen spring assembly connected to the lower surface of the upper mold base body and the other end connected to the floating mold body. The floating mold guide assembly is disposed on the upper mold base body. Between the floating mold body and the floating mold body, one end of the floating mold guide assembly is connected to the lower surface of the upper mold base body, and the other end is connected to the floating mold body; the upper mold cooling water collection block is disposed on the upper mold base body, and the side of the upper mold cooling water collection block is provided with an upper mold water inlet channel and an upper mold water return channel, and the upper mold cooling water collection block is also provided with an upper mold water inlet and an upper mold water return outlet, the upper mold water inlet communicating with the upper mold water inlet channel, and the upper mold water return outlet communicating with the upper mold water return channel; at least a portion of the upper mold connecting hose is disposed inside the floating mold body, and one end of the upper mold connecting hose is connected to the upper mold water inlet, and the other end is connected to the upper mold water return outlet.

[0014] Furthermore, the upper die pressing frame assembly includes an upper die pressing frame body, a material frame actuation cylinder, a pressing frame guide assembly, and an upper die air collecting block. The material frame actuation cylinder is disposed on the upper die base body, and the upper die pressing frame is connected to the output end of the material frame actuation cylinder and is correspondingly disposed with respect to the lower die pressing frame body. The pressing frame guide assembly is installed between the upper die pressing frame body and the upper die base body, with one end of the pressing frame guide assembly connected to the frame of the upper die pressing frame body and the other end connected to the upper die base body. The upper die air collecting block is disposed on the upper die base body, and the upper die air collecting block is connected to the air passage interface of the material frame actuation cylinder through a second air pipe. The upper mold electrical control assembly includes an upper mold electrical control box, a 16-pin socket B, a second solenoid valve, and a second sensing plate. The upper mold electrical control box, the 16-pin socket B, and the second solenoid valve are all mounted on the upper mold base body, and the 16-pin socket B, the second solenoid valve, and the second sensing plate are electrically connected to the upper mold electrical control box. The 16-pin socket B is used for communication connection with the press equipment. The second solenoid valve is used to receive control commands from the upper mold electrical control box to control the air circuit opening and closing of the material frame actuation cylinder, thereby driving the actuation of the material frame actuation cylinder. The second sensing plate is mounted on the lower surface edge of the upper mold base body via a fixing plate, corresponding to the first sensing plate, and is used to sense the positioning status of the upper mold of the molding die and feed it back to the upper mold electrical control box.

[0015] Compared with the prior art, the present invention can achieve the following beneficial effects: By integrating the lower die, upper die, and electrical control system of the compression molding and punching die, integrated production of LWRT parts compression molding and punching is achieved. Through the cooperation of the lower and upper die forming limit blocks, combined with real-time feedback of the limit status from displacement sensors, the compression molding and punching die can achieve time-sharing operation of compression molding and punching, avoiding deformation and scrap due to uncooled material. The electrical control system communicates with the press equipment via 16-pin sockets A and B, and works with the first and second sensing boards to detect the positioning status. Simultaneously, it drives the first solenoid valve and forming limit cylinder, and the second solenoid valve and material frame cylinder to coordinate their actions, thereby achieving fully automated production. This significantly improves production efficiency and the stability of part forming and punching quality, thus solving the problems of low forming and punching quality stability and difficulty in achieving high-efficiency production requirements associated with traditional processes. Attached Figure Description

[0016] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the compression molding and punching die provided in an embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of the lower die of the compression molding and punching die provided in an embodiment of the present utility model; Figure 3 This is a schematic diagram of the structure of the lower mold base assembly provided in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure of the lower mold core assembly provided in an embodiment of the present utility model; Figure 5This is a schematic diagram of the structure of the lower die pressing frame assembly provided in an embodiment of the present utility model; Figure 6 This is a schematic diagram of the structure of the upper die of the compression molding and punching die provided in an embodiment of the present utility model; Figure 7 This is a schematic diagram of the structure of the upper mold base assembly and the upper mold electrical control assembly provided in the embodiments of this utility model; Figure 8 This is a schematic diagram of the upper mold core assembly provided in an embodiment of the present utility model; Figure 9 This is a schematic diagram of the structure of the upper mold floating mold assembly provided in an embodiment of the present utility model; Figure 10 This is a schematic diagram of the structure of the upper mold pressing frame assembly provided in an embodiment of the present utility model; Figure 11 This is a structural schematic diagram of the mold compression molding state provided in an embodiment of the present utility model; Figure 12 This is a structural schematic diagram of the mold pressing and punching state provided in the embodiment of this utility model.

[0017] Explanation of reference numerals in the attached figures: 1. Lower die of compression molding punching die; 101. Lower die base assembly; 1011. Lower die base body; 1012. First lifting handle; 1013. Scrap box; 1014. Pressure plate; 1015. Buffer; 1016. Upper and lower die connecting plate; 1017. Storage limiter; 102. Lower die core assembly; 1021. Lower die core body; 1022. Lower die cooling water collector; 1023. Lower die connecting hose; 1024. Lower die water inlet channel; 1025. Lower die water return channel; 103. 1. Lower die pressure frame assembly; 1031. Lower die pressure frame body; 1032. Material positioning plate; 1033. Pressure frame ejector; 104. Lower die forming limit mechanism; 1041. Lower die forming limit block; 1042. Forming limit action cylinder; 2. Upper die of compression forming punching die; 201. Upper die base assembly; 2011. Upper die base body; 2012. Second lifting handle; 2013. Guide post; 2014. Upper die forming limit block; 2015. Floating die hard limit; 2016. Guide post 202. Plate; 2023. Upper die core assembly; 2024. Upper die core body; 2025. Upper die cutting edge; 2026. Punch; 2027. Fixing base; 2028. Material hanging pin; 2029. Floating die assembly; 2020. Floating die body; 2030. Nitrogen spring assembly; 2031. Floating die guide assembly; 2022. Upper die cooling water collector; 2033. Upper die connecting hose; 2034. Upper die water inlet channel; 2035. Upper die water return channel; 206. Upper die pressure frame assembly ; 2041, Upper die pressing frame body; 2042, Material frame actuation cylinder; 2043, Pressing frame guide assembly; 2044, Upper die air collection block; 3, Electrical control system; 301, Lower die electrical control assembly; 3011, Lower die electrical control box; 3012, 16-pin socket A; 3013, First solenoid valve; 3014, First sensing plate; 302, Upper die electrical control assembly; 3021, Upper die electrical control box; 3022, 16-pin socket B; 3023, Second solenoid valve; 3024, Second sensing plate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and do not constitute a limitation thereof. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to enable a better understanding of the present utility model. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present utility model are not shown or described in the specification. This is to avoid obscuring the core parts of the present utility model with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this utility model can be combined to form various implementation methods. Furthermore, the order of the steps or actions in the method description can be changed or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various orders in the specification and drawings are merely for the clear description of a particular embodiment and do not imply a mandatory order, unless otherwise stated that a particular order must be followed.

[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] like Figures 1 to 12 As shown, this embodiment provides a compression molding die for lightweight composite LWRT parts for automobiles, which is used to connect with a press. The press can drive the compression molding die to close or release the die. The compression molding die includes a lower die 1, an upper die 2, and an electrical control system 3. The lower die 1 and the upper die 2 are arranged vertically and vertically respectively. The lower die 1 may include a lower die base assembly 101, a lower die core assembly 102, a lower die pressure frame assembly 103, and a lower die forming limiting mechanism 104. The lower die core assembly 102, the lower die pressure frame assembly 103, and the lower die forming limiting mechanism 104 are all mounted on the lower die base assembly 101. The upper die 2 of the compression molding and punching die may include an upper die base assembly 201, an upper die core assembly 202, a floating die assembly 203, and an upper die pressure frame assembly 204. The upper die core assembly 202, the floating die assembly 203, and the upper die pressure frame assembly 204 are all mounted on the upper die base assembly 201. The modular design of the die structure is achieved through the separate assembly of the lower die 1 and the upper die 2 of the compression molding and punching die, facilitating assembly and maintenance. Simultaneously, the electrical control system 3 is electrically connected to both the lower die 1 and the upper die 2 of the compression molding and punching die. The electrical control system 3 may include a lower die electrical control component 301 and an upper die electrical control component 302, wherein the lower die electrical control component 301 is mounted on the lower die 1, and the upper die electrical control component 302 is mounted on the upper die 2. The lower mold electrical control component 301 and the upper mold electrical control component 302 can precisely control the forming and punching actions of the compression molding and punching die, laying a structural foundation for the subsequent realization of integrated production of compression molding and punching, time-sharing action control and full-process automation, and effectively improving the operational stability and production efficiency of the die.

[0024] In some embodiments, refer to Figure 2 , Figure 3 , Figure 6 and Figure 7The lower die base assembly 101 may include a lower die base body 1011, a first lifting handle 1012, a scrap box 1013, a guide sleeve, a buffer 1015, an upper and lower die connecting plate 1016, and a storage limiter 1017. In this embodiment, four first lifting handles 1012 are provided, which are integrally formed with the lower die base body 1011. The four first lifting handles 1012 are arranged in pairs on opposite sides of the lower die base body 1011, which facilitates the lifting and handling of the compression molding punching die. The lower die base body 1011 has a scrap box groove in the form of a rectangular through slot, and a discharge port is provided on the upper surface of the lower die base body 1011. The scrap box groove and the discharge port are connected. The scrap box 1013 is installed in the scrap box slot by a pull-out method. Punching scrap falls into the scrap box 1013 through the discharge port. The workers can pull out the scrap box 1013 periodically to clean the scrap and reduce pollution. The upper surface of the lower mold base body 1011 has a mounting hole, which is set along the height direction of the lower mold base body 1011. The guide sleeve is installed in the mounting hole and is used to slide with the guide post 2013 of the upper mold base assembly 201 mentioned below to ensure the mold closing guidance accuracy.

[0025] Furthermore, the outer wall of the guide sleeve and the inner wall of the mounting hole are in a transition fit. This transition fit allows the guide sleeve to obtain appropriate connection strength within the mounting hole. It avoids the difficulties in installation and potential damage to components caused by an interference fit, as well as the loosening and impact on guiding accuracy caused by a clearance fit. This ensures stable installation of the guide sleeve and provides a reliable foundation for guiding the mold closing of the compression molding die. When the guide sleeve is in conjunction with the guide post 2013, it can accurately guide the closing action of the lower die 1 and the upper die 2 of the compression molding die, thereby improving the stability of the compression molding die operation.

[0026] Furthermore, the lower mold base assembly 101 also includes a pressure plate 1014, which is disposed on the upper surface of the lower mold base body 1011 and coaxially arranged with the mounting hole. In this embodiment, the pressure plate 1014 is arranged in a ring shape and is connected to the lower mold base body 1011 by screws. The inner diameter of the ring-shaped pressure plate 1014 is equal to the inner diameter of the guide sleeve, allowing the guide post 2013 to pass through the pressure plate 1014 and be inserted into the guide sleeve. This prevents the guide sleeve from detaching from the mounting hole, further improving the guiding accuracy of the guide post 2013 and the guide sleeve. Specifically, the ring-shaped pressure plate 1014 is fastened to the upper surface of the lower mold base body 1011 by screws, and its bottom end forms a rigid limit with the top end of the guide sleeve. This effectively resists the axial impact force generated by the guide post 2013 on the guide sleeve during mold closing, preventing the guide sleeve from loosening from the mounting hole or being pulled out by the guide post 2013 due to long-term stress, thus extending the service life of the guide sleeve.

[0027] The buffer 1015 is detachably installed on the edges of the four corners of the upper surface of the lower mold base body 1011, and four buffers are arranged at circumferential intervals thereon. In this embodiment, the buffer 1015 can be a hydraulic buffer 1015, which is used to absorb impact loads during mold closing and protect the components on the mold.

[0028] Multiple upper and lower die connecting plates 1016 are disposed on opposite sides of the lower die base body 1011. In this embodiment, there are four upper and lower die connecting plates 1016, respectively disposed on opposite sides of the lower die base body 1011, for connecting the lower die base assembly 101 and the upper die base assembly 201. Specifically, the upper and lower die connecting plates 1016 are high-strength steel plates. One end is fixedly connected to the side of the lower die base body 1011 by bolts, and the other end is connected to the upper die base body 2011 (to be mentioned later) by a pin, realizing the connection between the lower die base assembly 101 and the upper die base assembly 201, which facilitates installation and the overall movement of the compression molding punching die by a crane. At one end of the upper and lower die connecting plates 1016 near the upper die base assembly 201, an oblong hole is provided along its extension direction, and the pin passes through the oblong hole. When the mold is closed and adjusted or the entire compression molding die is moved, the pin can slide within a small range within the oblong hole, effectively compensating for positional deviations caused by manufacturing tolerances and installation errors, and avoiding stress concentration problems caused by rigid connections. At the same time, a small adjustment space is reserved for the relative movement of the lower die base assembly 101 and the upper die base assembly 201 during the opening and closing of the compression molding die, improving the assembly adaptability and operational stability of the compression molding die, and allowing the upper and lower die connecting plates 1016 to have both connection and die adjustment functions.

[0029] The storage limiter 1017 is generally installed on the outside of the lower die holder body 1011 via a hook. In this embodiment, four storage limiters 1017 are provided, and the storage limiters 1017 are designed in a circular shape. When storing the die, the storage limiter 1017 can be placed on the upper surface of the pressure plate 1014 and coaxially arranged with it. The guide post 2013 can pass through the storage limiter 1017 and be inserted into the guide sleeve. Since the storage limiter 1017 has a certain thickness, it can separate and support the lower die 1 and the upper die 2 of the compression molding die when storing the compression molding die, so as to avoid the cutting edge on the lower die core body 1021 and the upper die cutting edge 2022 on the upper die core assembly 202 being crushed and damaged.

[0030] In some embodiments, refer to Figure 3 and Figure 4The lower die core assembly 102 may include a lower die core body 1021, a lower die cooling water collector 1022, and a lower die connecting hose 1023. The lower die core body 1021 is mounted on the upper surface of the lower die base body 1011, and the lower die core body 1021 is provided with cutting edges and forming surfaces. The cutting edges include peripheral cutting edges and punching cutting edges; the peripheral cutting edges are used for part contour punching, and the punching cutting edges are used for corresponding part hole positions. The lower die cooling water collector 1022 is detachably mounted on the lower die base body 1011 and located on one side of the lower die core body 1021. The lower mold cooling water collection block 1022 has a lower mold water inlet channel 1024 and a lower mold water return channel 1025 on its side. The lower mold cooling water collection block 1022 also has a lower mold water inlet and a lower mold water return outlet. The lower mold water inlet is connected to the lower mold water inlet channel 1024, and the lower mold water return outlet is connected to the lower mold water return channel 1025. The lower mold water inlet channel 1024 and the lower mold water return channel 1025 are quick-connect interfaces for external cooling water systems, enabling rapid access and discharge of cooling water. The lower mold water inlet and the lower mold water return outlet are quick-connect interfaces for the lower mold connecting hose 1023, enabling rapid connection of the cooling water path. At least a portion of the lower mold connecting hose 1023 is located inside the lower mold core body 1021. One end of the lower mold connecting hose 1023 is connected to the lower mold water inlet, and the other end is connected to the lower mold water return outlet, forming a circulation loop. By detachably installing the lower mold cooling water collector 1022 onto the lower mold base body 1011, and using a quick-connect method, rapid assembly, disassembly, and maintenance are achieved. The quick-connect adapters for the lower mold water inlet channel 1024 and the lower mold water return channel 1025 with the external cooling water system, as well as the quick-connect connections for the lower mold water inlet, lower mold water return port, and lower mold connecting hose 1023, significantly shorten the water circuit debugging time of the lower mold core assembly 102. The lower mold connecting hose 1023 is built into the lower mold core body 1021, precisely covering the key areas of forming and punching, effectively controlling the temperature field of the lower mold core assembly 102, and ensuring the dimensional accuracy and surface quality of the molded parts.

[0031] In some embodiments, refer to Figure 1 , Figure 2 , Figure 4 and Figure 5The lower die pressure frame assembly 103 may include a lower die pressure frame body 1031, a material positioning plate 1032, and a pressure frame ejector 1033. The lower die pressure frame body 1031 has a rectangular frame structure and surrounds the outer side of the lower die core body 1021. The inner contour of its rectangular frame structure is adapted to the outer contour of the lower die core body 1021. The material positioning plate 1032 is installed on the outer surface of the frame of the lower die pressure frame body 1031 by countersunk bolts, and the material positioning plate 1032 is at least partially higher than the top surface of the lower die pressure frame body 1031, for limiting the molding material. The pressure frame ejector 1033 is disposed on the frame, one end of which is connected to the outer surface of the frame, and the other end is connected to the lower die base body 1011, providing elastic support for the lower die pressure frame body 1031. Specifically, the pressure frame ejector 1033 may include a helical spring, a guide rod, and a connecting seat. The helical spring is sleeved on the guide rod, and the connecting seat is connected to the outer surface of the lower die pressure frame body 1031 by bolts. The top end of the guide rod is fixedly connected to the connecting seat. A through hole is provided on the side of the lower die body 1011 corresponding to the position of the connecting seat. The bottom end of the guide rod passes through the through hole and is movably engaged with it, and the guide rod does not detach from the through hole. Before mold closing, the helical spring is in a pre-compressed state, lifting the lower die pressure frame body 1031 so that it is higher than the lower die core body 1021, which facilitates material placement. When the mold closes, the upper die 2 of the compression molding and punching die presses down, and the helical spring is compressed to store energy, providing uniform pressure force to ensure that the material does not slip during molding and punching. After mold opening, the helical spring releases energy, pushing the lower die pressure frame body 1031 to reset, assisting in unloading and ensuring continuous and stable operation of the compression molding and punching die.

[0032] Furthermore, multiple ejector springs 1033 are evenly spaced along the circumference of the lower die pressure frame body 1031. The multiple ejector springs 1033 work together to ensure that the clamping force of the lower die pressure frame body 1031 on the material is consistent along its circumference, preventing material slippage due to insufficient local pressure or material damage due to excessive local pressure. The even arrangement can offset uneven pressure on the lower die pressure frame body 1031 during mold closing, preventing tilting or deformation due to uneven force, such as unilateral force, and ensuring the fitting accuracy between it and the upper die 2 of the die-cutting mold. Simultaneously, the multiple ejector springs 1033 extend synchronously, pushing the lower die pressure frame body 1031 back to its original position smoothly, avoiding material residue or difficulty in handling parts due to local jamming, and ensuring production continuity.

[0033] In some embodiments, refer to Figure 2 and Figure 7The lower mold forming limiting mechanism 104 may include a lower mold forming limiting block 1041, a forming limiting actuation cylinder 1042, a displacement sensor, and a lower mold air collecting block. The forming limiting actuation cylinder 1042 is installed on the upper surface of the lower mold base body 1011, and its output end is connected to the lower mold forming limiting block 1041 to drive the lower mold forming limiting block 1041 to perform linear displacement. The displacement sensor is installed on the forming limiting actuation cylinder 1042 to provide real-time feedback on the displacement state of the lower mold forming limiting block 1041. The lower mold air collecting block is located on the lower mold base body 1011 and is electrically connected to the lower mold electrical control component 301. The lower mold air collecting block is connected to the air passage interface of the forming limiting actuation cylinder 1042 through a first air pipe. The lower die forming limit block 1041 is linearly displaced by a forming limit cylinder 1042, driven by the forming limit cylinder 1042. With real-time position feedback from a displacement sensor, the lower die forming limit block 1041 can be precisely controlled to switch between the forming position and the avoidance position. During the forming stage, the lower die forming limit block 1041 extends to the forming position via the forming limit cylinder 1042, forming a rigid support with the upper die forming limit block 2014 (described below). This precisely limits the mold closing depth of the compression molding die, ensuring the dimensional accuracy of the formed parts. During the punching stage, the lower die forming limit block 1041 retracts to the avoidance position via the forming limit cylinder 1042, preventing interference with the upper die core assembly 202 (described below). Meanwhile, the lower mold air collection block, acting as the air circuit hub, is electrically connected to the lower mold electrical control component 301 and connected to the forming limit cylinder 1042 via the first air pipe. This enables automated control of the forming limit cylinder 1042's movement. Combined with feedback signals from the displacement sensor, a closed-loop control logic of "electrical control - cylinder drive - displacement monitoring" is formed. This structural design not only meets the time-sharing process requirements of forming parts first and then punching them, but also improves the stability of the compression molding punching die operation and the consistency of part quality through automated limit control, solving the problems of low limit accuracy and manual switching of traditional dies.

[0034] In some embodiments, refer to Figure 1 and Figure 2The lower mold electrical control assembly 301 may include a lower mold electrical control box 3011, a 16-pin socket A 3012, a first solenoid valve 3013, and a first sensing plate 3014. The lower mold electrical control box 3011, the 16-pin socket A 3012, and the first solenoid valve 3013 are all mounted on the lower mold base body 1011, and the 16-pin socket A 3012, the first solenoid valve 3013, and the first sensing plate 3014 are electrically connected to the lower mold electrical control box 3011. The 16-pin socket A 3012 is used for communication connection with the press equipment; the first solenoid valve 3013 is used to receive control commands from the lower mold electrical control box 3011 to control the air passage opening and closing of the molding limit cylinder 1042, thereby driving the action of the molding limit cylinder 1042. Using the lower die control box 3011 as the control core and the 16-pin socket A 3012 as the communication hub, signal interaction between the lower die 1 of the compression molding and punching die and the press equipment is realized, ensuring precise synchronization between the movement of the lower die 1 and the operating rhythm of the press equipment. The first solenoid valve 3013 converts the electrical control signal into pneumatic control, driving the forming limit action cylinder 1042 to complete the extension and retraction of the lower die forming limit block 1041, realizing the automated switching of forming and punching processes. The first sensing plate 3014 is installed on the upper surface edge of the lower die base body 1011 to sense the positioning status of the upper die 2 of the compression molding and punching die and feed it back to the lower die control box 3011. The first sensing plate 3014 monitors the position status of the upper die 2 of the compression molding and punching die in real time, providing a trigger signal to the lower die control box 3011 to avoid action timing conflicts. This integrated electronic control design not only achieves precise control of the movement of the molding and punching die itself, but also ensures coordinated linkage with the press equipment, so that the molding and punching process of the parts does not require manual intervention, significantly improving production efficiency and part quality stability.

[0035] In some embodiments, refer to Figure 1 , Figure 6 and Figure 7The upper mold base assembly 201 may include an upper mold base body 2011, a second lifting handle 2012, a guide post 2013, an upper mold forming limiting block 2014, and a floating mold hard limiting block 2015. The second lifting handle 2012 is disposed on opposite sides of the upper mold base body 2011. In this embodiment, four second lifting handles 2012 are provided, which are integrally formed with the upper mold base body 2011, and are disposed in pairs on opposite sides of the upper mold base body 2011. In this way, the upper mold base body 2011 serves as the basic support platform, and the second lifting handles 2012 provide convenient operating points for the overall lifting and installation of the molding die, facilitating the handling and debugging of the molding die. The lower surface of the upper mold base body 2011 is provided with four fixing holes corresponding to the mounting holes. The guide post 2013 is disposed on the lower surface of the upper mold base body 2011 and installed in the fixing holes, corresponding to the guide sleeve. The guide post 2013 is inserted into the guide sleeve, which can accurately guide the mold during the mold closing process, ensuring the coaxiality and accuracy of the upper mold 2 and the lower mold 1 of the compression molding die, and avoiding damage to the compression molding die or poor part forming due to misalignment. The upper mold forming limit block 2014 is set on the lower surface of the upper mold base body 2011 and is correspondingly set with the lower mold forming limit block 1041. The two work together to accurately limit the mold closing depth of the compression molding die during mold closing, ensuring that the forming size of the part meets the design requirements. The floating mold hard limit 2015 is set on the lower surface of the upper mold base body 2011 to limit the floating mold assembly 203, preventing the floating mold assembly 203 from being damaged due to excessive movement, ensuring the stability and reliability of the coordinated work of various components of the compression molding die, and improving the accuracy and stability of the upper mold base assembly 201 in the compression molding process, providing structural support for high-quality part forming.

[0036] In some embodiments, refer to Figure 4 , Figure 7 and Figure 8The upper die core assembly 202 may include an upper die core body 2021, an upper die cutting edge 2022, a punch 2023, a fixing seat 2024, and a material hanging pin 2025. The upper die core body 2021 is mounted on the lower surface of the upper die base body 2011, serving as the core load-bearing foundation and providing the mounting base for each functional component. The upper die cutting edge 2022 is located on the lower surface of the upper die core body 2021 and corresponds to the cutting edge of the lower die core body 1021, ensuring that the part contour is punched during die closing and guaranteeing the shape accuracy. Multiple fixing seats 2024 are provided, and all fixing seats 2024 are located on the lower surface of the upper die base body 2011. The punch 2023 is correspondingly set to the fixing seat 2024, and each punch 2023 is fixed to its corresponding fixing seat 2024. The fixed base 2024 cooperates with the punch 2023 to complete the punching of various holes on the part, meeting the needs of multi-feature processing. Multiple hanging pins 2025 are provided, distributed circumferentially along the cutting edge 2022 of the upper die, and are detachably installed on the lower surface of the upper die core body 2021. The hanging pins 2025 not only pick up the scrap edges punched by the cutting edge 2022 of the upper die during mold closing, but also physically fix the material by piercing it during the compression molding stage. This effectively prevents problems such as wrinkles and displacement of the material due to flow or force during the compression molding process, ensuring the flatness and dimensional accuracy of the formed part. During mold opening, the upper mold base assembly 201 moves upward, and the punch 2023 and the mounting pin 2025 simultaneously drive the molded part and the scrap edge upward. During this process, the molded part connects with the punch 2023 and the mounting pin 2025 to the scrap edge through the natural thermal expansion and contraction effect formed after injection molding, ensuring that the molded part will not detach from the punch 2023 and the scrap edge will not detach from the mounting pin 2025. This ensures both the continuity and stability of the mold opening action and reliable positioning of the molded part through physical properties, effectively preventing production interruptions or product damage caused by the detachment of the molded part or scrap edge, thus guaranteeing the smooth operation of subsequent processes.

[0037] In some embodiments, refer to Figure 1 , Figure 6 , Figure 7 and Figure 9The upper mold floating mold assembly 203 may include a floating mold body 2031, a nitrogen spring assembly 2032, a floating mold guide assembly 2033, an upper mold cooling water collector 2034, and an upper mold connecting hose 2035. The floating mold body 2031 is disposed on the lower surface of the upper mold base body 2011. A hydraulic cylinder is provided between the floating mold body 2031 and the upper mold base body 2011. One end of the hydraulic cylinder is fixed to the lower surface of the upper mold base body 2011, and the output end of the other end is rigidly connected to the upper surface of the floating mold body 2031. In this way, the physical connection of the hydraulic cylinder can ensure that the floating mold body 2031 will not fall off the upper mold 2 of the compression molding die. In addition, by controlling the extension and retraction of the output end of the hydraulic cylinder, the floating mold body 2031 can be driven to move downwards moderately during the mold opening stage, so as to smoothly remove the molded parts adsorbed on the upper mold core assembly 202, further optimizing the continuity and reliability of the automated production process. A nitrogen spring assembly 2032 is disposed between the upper mold base body 2011 and the floating mold body 2031, with one end connected to the lower surface of the upper mold base body 2011 and the other end connected to the floating mold body 2031. The nitrogen spring assembly 2032 provides stable elastic support and cushioning, and adaptively compresses as the upper mold 2 of the compression molding die descends during mold closing, ensuring uniform molding pressure. A floating mold guide assembly 2033 is disposed between the upper mold base body 2011 and the floating mold body 2031, with one end connected to the lower surface of the upper mold base body 2011 and the other end connected to the floating mold body 2031. The floating mold guide assembly 2033 can precisely constrain the movement trajectory of the floating mold body 2031, preventing deviation and improving molding accuracy. The upper mold cooling water collector 2034 is detachably installed on the upper mold base body 2011 and located on one side of the floating mold body 2031. The side of the upper mold cooling water collector 2034 is provided with an upper mold water inlet channel 2036 and an upper mold water return channel 2037. The upper mold cooling water collector 2034 also has an upper mold water inlet and an upper mold water return port. The upper mold water inlet is connected to the upper mold water inlet channel 2036, and the upper mold water return port is connected to the upper mold water return channel 2037. The upper mold water inlet channel 2036 and the upper mold water return channel 2037 are quick-connect interfaces for external cooling water systems, enabling rapid access and discharge of cooling water. The upper mold water inlet and the upper mold water return port are quick-connect interfaces for the upper mold connecting hose 2035, enabling rapid connection of the cooling water circuit. At least a portion of the upper mold connecting hose 2035 is disposed inside the floating mold body 2031, with one end of the upper mold connecting hose 2035 connected to the upper mold inlet and the other end connected to the upper mold outlet. By detachably installing the upper mold cooling water collector 2034 onto the upper mold base body 2011, quick assembly, disassembly, and maintenance are achieved through a quick-connect method.The quick-connect adapters for the upper mold water inlet channel 2036 and the upper mold water return channel 2037 with the external cooling water system, as well as the quick-connect connections for the upper mold water inlet, the upper mold water return port and the upper mold connecting hose 2035, construct a cooling water circulation loop, significantly shortening the water circuit debugging time of the upper mold floating mold assembly 203. The upper mold connecting hose 2035 is built into the floating mold body 2031, effectively controlling the working temperature of the floating mold body 2031 and preventing molding defects in the material due to abnormal temperature.

[0038] In some embodiments, refer to Figure 5 , Figure 7 and Figure 10 The upper die pressing frame assembly 204 may include an upper die pressing frame body 2041, a material frame actuation cylinder 2042, a pressing frame guide assembly 2043, and an upper die air collecting block 2044. The material frame actuation cylinder 2042 is mounted on the upper die base body 2011. The upper die pressing frame body 2041 is connected to the output end of the material frame actuation cylinder 2042 and is correspondingly positioned with respect to the lower die pressing frame body 1031. The material frame actuation cylinder 2042 drives the upper die pressing frame body 2041 to cooperate with the lower die pressing frame body 1031, thereby realizing the pressing and releasing action of the molding material. In this embodiment, multiple material frame actuation cylinders 2042 are evenly arranged along the circumference of the upper die pressing frame body 2041 to ensure that the pressing force is evenly distributed along the circumference of the upper die pressing frame body 2041. During mold closing, the material frame actuation cylinders 2042 extend synchronously, pushing the upper mold pressing frame body 2041 downwards to precisely fit against the upper surface of the lower mold pressing frame body 1031, forming a closed-loop pressing area. During mold opening, the material frame actuation cylinders 2042 retract synchronously, driving the upper mold pressing frame body 2041 upwards to reset, completing the release of the molding material. Through the coordinated action of multiple material frame actuation cylinders 2042, the stability and reliability of the pressing process are ensured, laying the foundation for high-quality edge forming of parts. The pressing frame guide assembly 2043 is installed between the upper mold pressing frame body 2041 and the upper mold base body 2011. One end of the pressing frame guide assembly 2043 is connected to the frame of the upper mold pressing frame body 2041, and the other end is connected to the upper mold base body 2011. The setting of the pressing frame guide assembly 2043 can ensure the stability of the movement trajectory of the upper mold pressing frame body 2041, avoid deviation, and improve the pressing accuracy. The upper mold air collecting block 2044 is installed on the upper mold base body 2011, and the upper mold air collecting block 2044 is connected to the air passage interface of the material frame actuation cylinder 2042 through the second air pipe. The upper mold air collecting block 2044 supplies air to the material frame actuation cylinder 2042 through the second air pipe, and manages the air passage in a unified manner, making the air passage layout simpler and maintenance more convenient.

[0039] In some embodiments, refer to Figure 1 , Figure 6 , Figure 7 and Figure 10The upper mold electrical control assembly 302 may include an upper mold electrical control box 3021, a 16-pin socket B 3022, a second solenoid valve 3023, and a second sensing plate 3024. The upper mold electrical control box 3021, the 16-pin socket B 3022, and the second solenoid valve 3023 are all mounted on the upper mold base body 2011, and the 16-pin socket B 3022, the second solenoid valve 3023, and the second sensing plate 3024 are electrically connected to the upper mold electrical control box 3021. The 16-pin socket B 3022 is used for communication with the press equipment; the second solenoid valve 3023 is used to receive control commands from the upper mold electrical control box 3021 to control the airflow of the material frame actuation cylinder 2042, thereby driving the actuation of the material frame actuation cylinder 2042. Using the upper mold control box 3021 as the control core and the 16-pin socket B 3022 as the communication hub, the upper mold 2 of the molding die and the press equipment are used to realize signal interaction, ensuring that the movement of the upper mold 2 of the molding die and the running rhythm of the press equipment are precisely synchronized. The second solenoid valve 3023 converts the electrical control signal into pneumatic control, driving the material frame movement cylinder 2042 to complete the pressing and releasing of the upper mold pressing frame body 2041, realizing automated pressing control of the molding material. The second sensing plate 3024 is installed on the lower surface edge of the upper mold base body 2011 through a fixing plate, corresponding to the first sensing plate 3014, and is used to monitor the relative position status of the upper mold 2 and the lower mold 1 of the molding die in real time. It generates a sensing signal by changing the distance with the first sensing plate 3014, and feeds the sensing signal back to the upper mold control box 3021. During the mold closing stage, the first sensing plate 3014 and the second sensing plate 3024 capture the dynamic relative positions of the upper mold 2 and the lower mold 1 of the compression molding and punching die in real time. Once the upper mold forming limit block 2014 of the upper mold 2 abuts against the lower mold forming limit block 1041 of the lower mold 1 at the forming position, the sensing signal is quickly fed back to the upper mold control box 3021. Alternatively, when the cutting edge 2022 of the upper mold penetrates 7mm into the cutting edge on the lower mold core body 1021, the sensing signal is quickly fed back to the upper mold control box 3021. This integrated electronic control design not only achieves precise control of the compression molding and punching die's own movements but also ensures coordinated linkage with the press equipment, eliminating the need for manual intervention in the compression molding and punching process of the parts, significantly improving production efficiency and part quality stability.

[0040] Furthermore, refer to Figure 1 and Figure 7The lower surface of the upper mold base body 2011 is also provided with a guide plate 2016, which is arranged around the guide post 2013. This provides auxiliary guidance and protection for the guide post 2013, preventing it from shifting due to lateral forces during mold closing, which could lead to mold closing failure or damage to the compression molding die. The upper surface of the lower mold base body 1011 is provided with protrusions that fit the guide plate 2016. During mold closing, the guide plate 2016 and the protrusions on the lower mold base body 1011 first guide the upper mold 2 and lower mold 1 of the compression molding die, providing precise pre-positioning for the guide post 2013 to insert into the guide sleeve. Subsequently, the guide post 2013 inserts into the guide sleeve to complete the precision guidance, making the mold closing process a smooth transition from initial contact to precise fit.

[0041] This design reduces the initial alignment difficulty between the guide post 2013 and the guide sleeve, and the guide plate 2016 distributes the lateral force on the guide post 2013, preventing the guide post 2013 from bending or the guide sleeve from deforming after long-term use, thus significantly improving the durability of the guiding mechanism. At the same time, the dual guidance ensures that the upper and lower dies remain coaxial throughout the mold closing process, laying the foundation for the precise matching of the upper mold forming limit block 2014 and the lower mold forming limit block 1041, and the punching alignment of the upper mold cutting edge 2022 and the cutting edge on the lower mold core body 1021. This reduces part dimensional deviations or mold damage caused by mold closing deviations from the source, further ensuring production stability and part quality.

[0042] Furthermore, refer to Figure 2 and Figure 7 The upper mold forming limit block 2014 can be set on the end face of the guide plate 2016 facing the lower mold base body 1011. In this way, the guide plate 2016 can simultaneously undertake the dual functions of guiding and limiting, forming an integrated structural design, reducing the space occupied by the parts installation and the positioning error. At the same time, the structural rigidity of the guide plate 2016 is used to enhance the support strength of the upper mold forming limit block 2014.

[0043] In actual use, refer to Figure 2 , Figure 3 , Figures 7 to 12 First, production preparation is carried out. The molding die is installed on the press equipment. The control cabinet of the press equipment is connected to the 16-pin socket A 3012 of the lower die 1 and the 16-pin socket B 3022 of the upper die 2 via data cables to establish electrical control communication between the molding die and the press equipment. Process parameters such as mold closing position, molding pressure, and holding time are set through the press equipment. Communication and operation of the molding die are completed, as well as the status of the lower die forming limit mechanism 104 and the inspection of the automated production line are monitored.

[0044] In the automated production process, the robot's gripper carries the heated molding material, which is precisely positioned into the mold via the lower die pressing frame body 1031 and the material positioning plate 1032. After the robot moves out of the mold to a safe position, it sends a start signal to the press equipment. The press equipment starts, and the upper die 2 of the molding die descends to close. The lower die's forming limit cylinder 1042 drives the lower die forming limit block 1041 to move to the forming position, making rigid contact with the upper die forming limit block 2014 (0mm gap, limiting the mold closing depth). Under the coordinated action of the material frame actuation cylinder 2042 and the pressing frame ejector 1033, the upper die pressing frame body 2041 and the lower die pressing frame body 1031 compress the material; the material hanging needle 2025 pierces the material to prevent wrinkles during molding. The press equipment performs molding according to the program and holds pressure for the set time. After the pressure holding period is completed, the press equipment controls the upper die 2 of the molding and punching die to rise 10mm away from the molding and pressure holding position according to the preset program. After rising to the position, it sends a retraction signal to the lower die forming limit mechanism 104. The forming limit action cylinder 1042 of the lower die drives the lower die forming limit block 1041 to retract to the avoidance position. After the displacement sensor on the forming limit action cylinder 1042 senses that the retraction has been completed, it sends a second downward signal to the press equipment, allowing the upper die 2 of the molding and punching die to continue to descend and punch. The press equipment controls the upper die 2 of the compression molding punching die to descend 10mm twice and then continue to descend until the floating die body 2031 contacts the floating die hard limit 2015. At the same time, the cutting edge 2022 of the upper die gradually cuts into the cutting edge on the lower die core body 1021 by 7mm, completing the cutting edge. Simultaneously, the punching cutting edge on the lower die core body 1021 cooperates with the punch 2023 on the upper die core assembly 202 to complete the punching of various holes on the part, and the waste material falls into the waste box 1013. At this time, the second sensing plate 3024 senses that the second mold closing is in place, delays for 2 seconds, and sends a second upward signal to the press equipment. After the upper die 2 of the compression molding die rises to its origin twice, the press equipment sends a signal to the robot to allow it to re-enter the die and a signal to the lower die forming limit mechanism 104 to activate. The forming limit cylinder 1042 of the lower die 1 drives the lower die forming limit block 1041 to the forming position. After the displacement sensor provides feedback, it sends a signal to the press equipment to allow it to descend. At the same time, the robot's lower gripper, carrying the heated forming material, re-enters the die and rises to the part removal position, sending a signal to the press equipment to indicate that it is in position. The press equipment sends activation signals to the material frame activation cylinder 2042 and the hydraulic cylinder. The material frame activation cylinder 2042 retracts and the output end of the hydraulic cylinder extends, simultaneously removing the scrap edge on the hanging needle 2025 and the forming part on the punch 2023. The robot's upper gripper picks up the part and moves it out of the compression molding die, while simultaneously sending a signal to the press equipment to descend. This cycle repeats continuously.

[0045] During mold forming, the forming limit cylinder 1042 drives the lower mold forming limit block 1041 to feed into position and contact the upper mold forming limit block 2014, with a distance of 0mm. The distance between the second sensing plate 3024 and the first sensing plate 3014 is 9mm-10mm, and no sensing signal is triggered, indicating that no punching has occurred. The distance between the floating mold body 2031 and the floating mold hard limit 2015 is 7mm, and the cutting edge 2022 of the upper mold and the cutting edge on the lower mold core body 1021 are not in contact, indicating that no punching has occurred.

[0046] During die punching, the lower die forming limit block 1041 retracts, and the press equipment controls the upper die 2 of the die forming punching die to descend 10mm twice and then continue to descend 7mm; the distance between the second sensing plate 3024 and the first sensing plate 3014 decreases to 2mm-3mm, triggering a sensing signal, indicating that the punching is in place. The floating die body 2031 and the floating die hard limit 2015 are 0mm apart and in contact, and the cutting edge 2022 of the upper die cuts into the cutting edge on the lower die core body 1021 by 7mm to complete the punching.

[0047] By integrating the lower die 1, the upper die 2, and the electrical control system 3, integrated production of LWRT parts compression molding and punching is achieved. Through the cooperation of the lower die forming limit block 1041 and the upper die forming limit block 2014, combined with real-time feedback of the limit status from a displacement sensor, the compression molding and punching die can achieve time-sharing operation of compression molding and punching, avoiding the phenomenon of material deformation and scrap due to insufficient material cooling. The electrical control system 3 communicates with the press equipment through 16-pin socket A 3012 and 16-pin socket B 3022, and works with the first sensing plate 3014 and the second sensing plate 3024 to detect the positioning status. Simultaneously, it drives the first solenoid valve 3013 to cooperate with the forming limit cylinder 1042 and the second solenoid valve 3023 to cooperate with the material frame cylinder 2042, thereby achieving fully automated production, significantly improving production efficiency and the stability of part forming and punching quality. This solves the problem of low forming and punching quality stability and difficulty in achieving high-efficiency production requirements in traditional processes.

[0048] If manual operation is used, the multiple hanging pins 2025 on the upper die body 2021 can be removed and distributed circumferentially along the peripheral cutting edge on the lower die body 1021, and installed on the lower surface of the lower die body 1021. During the mold opening process, the floating die body 2031, under the action of gravity and the return force of the nitrogen spring assembly 2032, will retract the forming part connected to the punch 2023, ensuring that the forming part is on the lower die 1 of the compression molding die. Since only manual removal of the part from the lower die 1 of the compression molding die is required, neither the hydraulic cylinder to remove the part from the punch 2023 nor the material frame actuation cylinder 2042 to retract the scrap edge is needed. Therefore, the upper die pressure frame assembly 204 can be replaced with a pressure frame ejector 1033, and the upper die hydraulic cylinder can be eliminated. This approach is suitable for manual part removal while controlling costs.

[0049] Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

[0050] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A die for compression molding and punching lightweight composite LWRT parts for automobiles, characterized in that: The die includes a lower die for compression molding and punching, an upper die for compression molding and punching, and an electrical control system. The lower die and the upper die are arranged correspondingly. The lower die includes a lower die base assembly, a lower die core assembly, a lower die pressure frame assembly, and a lower die forming limiting mechanism. The lower die core assembly, the lower die pressure frame assembly, and the lower die forming limiting mechanism are all mounted on the lower die base assembly. The upper die includes an upper die base assembly, an upper die core assembly, a floating die assembly, and an upper die pressure frame assembly. The upper die core assembly, the floating die assembly, and the upper die pressure frame assembly are all mounted on the upper die base assembly. The electrical control system is electrically connected to the lower die and the upper die of the molding die, respectively. The electrical control system includes a lower die electrical control component and an upper die electrical control component, wherein the lower die electrical control component is disposed on the lower die of the molding die, and the upper die electrical control component is disposed on the upper die of the molding die.

2. The die for compression molding and punching of lightweight composite LWRT parts for automobiles according to claim 1, characterized in that: The lower mold base assembly includes a lower mold base body, a first lifting handle, a scrap box, a guide sleeve, a buffer, upper and lower mold connecting plates, and a storage limiter. The first lifting handle is located on opposite sides of the lower mold base body. The lower mold base body has a scrap box groove, and the scrap box is located in the scrap box groove. The upper surface of the lower mold base body has a mounting hole, and the guide sleeve is located in the mounting hole. The buffer is located on the edge of the upper surface of the lower mold base body, and multiple buffers are spaced apart along its circumference. Multiple upper and lower mold connecting plates are provided, and multiple upper and lower mold connecting plates are located on opposite sides of the lower mold base body for connecting the lower mold base assembly and the upper mold base assembly. The storage limiter is located on the outside of the lower mold base body.

3. The compression molding and punching die for lightweight composite LWRT parts for automobiles according to claim 2, characterized in that: The lower mold core assembly includes a lower mold core body, a lower mold cooling water collection block, and a lower mold connecting hose. The lower mold core body is disposed on the upper surface of the lower mold base body, and the lower mold core body is provided with a cutting edge and a forming surface. The lower mold cooling water collection block is disposed on the lower mold base body, and the side of the lower mold cooling water collection block is provided with a lower mold water inlet channel and a lower mold water return channel. The lower mold cooling water collection block is also provided with a lower mold water inlet and a lower mold water return outlet. The lower mold water inlet is connected to the lower mold water inlet channel, and the lower mold water return outlet is connected to the lower mold water return channel. At least a portion of the lower mold connecting hose is disposed inside the lower mold core body, and one end of the lower mold connecting hose is connected to the lower mold water inlet, and the other end is connected to the lower mold water return outlet.

4. The compression molding and punching die for lightweight composite LWRT parts for automobiles according to claim 3, characterized in that: The lower die pressing frame assembly includes a lower die pressing frame body, a material positioning plate, and a pressing frame ejector. The lower die pressing frame body surrounds the outer side of the lower die core body. The material positioning plate is installed on the outer surface of the frame of the lower die pressing frame body for positioning the molding material. The pressing frame ejector is disposed on the frame, with one end connected to the outer surface of the frame and the other end connected to the lower die base body, providing elastic support for the lower die pressing frame body.

5. The die for compression molding and punching of lightweight composite LWRT parts for automobiles according to claim 2, characterized in that: The lower mold forming limiting mechanism includes a lower mold forming limiting block, a forming limiting action cylinder, a displacement sensor, and a lower mold air collecting block. The forming limiting action cylinder is installed on the upper surface of the lower mold base body, and its output end is connected to the lower mold forming limiting block to drive the lower mold forming limiting block to make linear displacement. The displacement sensor is installed on the forming limiting action cylinder to provide real-time feedback on the displacement state of the lower mold forming limiting block. The lower mold air collecting block is located on the lower mold base body and is electrically connected to the lower mold electrical control system. The lower mold air collecting block is connected to the air passage interface of the forming limiting action cylinder through a first air pipe.

6. The die for compression molding and punching of lightweight composite LWRT parts for automobiles according to claim 2, characterized in that: The lower mold electrical control assembly includes a lower mold electrical control box, a 16-pin socket A, a first solenoid valve, and a first sensing plate. The lower mold electrical control box, the 16-pin socket A, and the first solenoid valve are all installed on the lower mold base body, and the 16-pin socket A, the first solenoid valve, and the first sensing plate are respectively electrically connected to the lower mold electrical control box. The 16-pin socket A is used for communication connection with the press equipment. The first solenoid valve is used to receive control commands from the lower mold electrical control box to control the air circuit opening and closing of the forming limit action cylinder, thereby driving the action of the forming limit action cylinder. The first sensing plate is installed on the upper surface edge of the lower mold base body to sense the positioning status of the upper mold of the molding and punching die and feed it back to the lower mold electrical control box.

7. The die for compression molding and punching of lightweight composite LWRT parts for automobiles according to claim 6, characterized in that: The upper mold base assembly includes an upper mold base body, a second lifting handle, a guide post, an upper mold forming limiting block, and a floating mold hard limiter. The second lifting handle is disposed on opposite sides of the upper mold base body. The guide post is disposed on the lower surface of the upper mold base body and is disposed corresponding to the guide sleeve. The upper mold forming limiting block is disposed on the lower surface of the upper mold base body and is disposed corresponding to the lower mold forming limiting block. The floating mold hard limiter is disposed on the lower surface of the upper mold base body and is used to limit the floating mold assembly.

8. The die for compression molding and punching of lightweight composite LWRT parts for automobiles according to claim 7, characterized in that: The upper die core assembly includes an upper die core body, an upper die cutting edge, a punch, a fixing seat, and a material hanging pin. The upper die core body is mounted on the lower surface of the upper die base body. The upper die cutting edge is located on the lower surface of the upper die core body and corresponds to the cutting edge of the lower die core body. Multiple fixing seats are provided, and all of the multiple fixing seats are located on the lower surface of the upper die base body. Each punch is corresponding to one of the fixing seats, and each punch is fixed to its corresponding fixing seat. Multiple material hanging pins are provided, and the multiple material hanging pins are distributed circumferentially along the upper die cutting edge and are mounted on the lower surface of the upper die core body.

9. The die for compression molding and punching of lightweight composite LWRT parts for automobiles according to claim 7, characterized in that: The upper mold floating mold assembly includes a floating mold body, a nitrogen spring assembly, a floating mold guide assembly, an upper mold cooling water collector, and an upper mold connecting hose. The floating mold body is disposed on the lower surface of the upper mold base body. A hydraulic cylinder is provided between the floating mold body and the upper mold base body, and the hydraulic cylinder is disposed on the lower surface of the upper mold base body, with its output end connected to the upper surface of the floating mold body. The nitrogen spring assembly is disposed between the upper mold base body and the floating mold body, with one end of the nitrogen spring assembly connected to the lower surface of the upper mold base body and the other end connected to the floating mold body. The floating mold guide assembly is disposed between the upper mold base body and the upper mold base body. Between the floating mold bodies, one end of the floating mold guide assembly is connected to the lower surface of the upper mold base body, and the other end is connected to the floating mold body; the upper mold cooling water collection block is disposed on the upper mold base body, and the side of the upper mold cooling water collection block is provided with an upper mold water inlet channel and an upper mold water return channel, and the upper mold cooling water collection block is also provided with an upper mold water inlet and an upper mold water return port, the upper mold water inlet communicating with the upper mold water inlet channel, and the upper mold water return port communicating with the upper mold water return channel; at least a portion of the upper mold connecting hose is disposed inside the floating mold body, and one end of the upper mold connecting hose is connected to the upper mold water inlet, and the other end is connected to the upper mold water return port.

10. The die for compression molding and punching of lightweight composite LWRT parts for automobiles according to claim 7, characterized in that: The upper die pressing frame assembly includes an upper die pressing frame body, a pressing frame actuation cylinder, a pressing frame guide assembly, and an upper die air collecting block. The pressing frame actuation cylinder is mounted on the upper die base body, and the upper die pressing frame is connected to the output end of the pressing frame actuation cylinder and is correspondingly arranged with respect to the lower die pressing frame body. The pressing frame guide assembly is installed between the upper die pressing frame body and the upper die base body, with one end connected to the frame of the upper die pressing frame body and the other end connected to the upper die base body. The upper die air collecting block is mounted on the upper die base body, and the upper die air collecting block is connected to the air passage interface of the pressing frame actuation cylinder through a second air pipe. The upper mold electrical control assembly includes an upper mold electrical control box, a 16-pin socket B, a second solenoid valve, and a second sensing plate. The upper mold electrical control box, the 16-pin socket B, and the second solenoid valve are all mounted on the upper mold base body, and the 16-pin socket B, the second solenoid valve, and the second sensing plate are electrically connected to the upper mold electrical control box. The 16-pin socket B is used for communication connection with the press equipment. The second solenoid valve is used to receive control commands from the upper mold electrical control box to control the air circuit opening and closing of the material frame actuation cylinder, thereby driving the actuation of the material frame actuation cylinder. The second sensing plate is mounted on the lower surface edge of the upper mold base body through a fixing plate, corresponding to the first sensing plate, and is used to sense the positioning status of the upper mold of the molding and punching die and feed it back to the upper mold electrical control box.

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