Battery box cover R angle forming equipment

Abstract

The utility model relates to the field of battery box covers, in particular to battery box cover R angle forming equipment. Comprising a machine table, a lower die assembly and an upper die assembly. The lower die assembly comprises at least one lower die unit installed on the machine table, and each lower die unit comprises a lower die fixing plate fixedly connected with the machine table, a lower die heat insulation plate fixedly installed on the lower die fixing plate, a lower die carrier fixedly installed on the lower die heat insulation plate and a lower die heating rod fixedly installed on the lower die carrier. The lower die carrier is provided with a cavity which corresponds to the shape of a corner of a product and is arranged in a concave mode. The upper die assembly comprises a press-fit upper plate fixedly arranged above the lower die assembly, at least one upper die unit and a press-fit driving device. Each upper mold unit comprises an upper mold mounting plate, an upper mold heat insulation plate, an upper mold carrier fixedly mounted on the upper mold heat insulation plate and an upper mold heating rod, the battery box cover R-angle forming equipment can prefabricate corner sheet bodies, and therefore the problem that in the related technology, the corners of products are prone to wrinkling is solved.

Description

Technical Field

[0001] This application relates to the field of battery box covers, and in particular to a battery box cover R-angle forming device. Background Technology

[0002] The descriptions in this section provide background information related to this disclosure only and do not constitute prior art. The battery box cover is the outer casing of the battery pack. Battery box covers typically have four rounded corners. In related technologies, during the one-piece thermoforming process of battery box covers, wrinkles are easily formed at the corners of products with deep cavities, and fabric overlap is severe, thus affecting the product's appearance and molding. Therefore, it is necessary to pre-form each corner before splicing the corner to the main body of the cover. Summary of the Invention

[0003] In view of this, this application provides a battery box cover R-corner forming equipment that can prefabricate corner pieces, thereby solving the problem of easy wrinkling at the corners of products in related technologies.

[0004] To achieve the above objectives, this application employs the following technical solution:

[0005] A battery box cover R-corner forming device, characterized in that: it includes a machine base, a lower mold assembly disposed on the machine base, and an upper mold assembly disposed on the machine base and located above the lower mold assembly; the lower mold assembly includes at least one lower mold unit mounted on the machine base, each lower mold unit including a lower mold fixing plate fixedly connected to the machine base, a lower mold heat insulation plate fixedly mounted on the lower mold fixing plate, a lower mold carrier fixedly mounted on the lower mold heat insulation plate, and a lower mold heating rod fixedly mounted on the lower mold carrier for heating the lower mold carrier; the lower mold carrier is provided with a cavity that is recessed and corresponds to the product corner shape; the upper mold assembly includes a pressing upper plate fixedly disposed above the lower mold assembly, at least one opposite... The upper mold unit, which moves up and down on the upper pressing plate, and the pressing drive device, which is installed on the upper pressing plate to drive the upper mold unit to move up and down, are included. Each upper mold unit includes an upper mold mounting plate, an upper mold heat insulation plate fixedly installed on the upper mold mounting plate, an upper mold carrier fixedly installed on the upper mold heat insulation plate, and an upper mold heating rod fixedly installed on the upper mold carrier for heating the upper mold carrier. The upper mold carrier is provided with a protrusion that protrudes downward and corresponds to the shape of the inner wall of the corner of the product. The upper mold carrier and the lower mold carrier are arranged opposite to each other. During the pressing process, the protrusion of the lower mold carrier enters the cavity of the upper mold carrier, so that the cavity and the protrusion cooperate to press the sheet into a preset corner sheet.

[0006] The aforementioned battery box cover R-corner forming equipment can pre-form corner pieces by pressing the lower mold unit and the upper mold unit. In this way, the corner pieces formed by pressing alone are not prone to wrinkles, which can solve the problem of poor product appearance and forming in related technologies.

[0007] In some embodiments, the upper mold carrier is further fixedly provided with two vertically distributed limiting blocks. The inner sidewalls of the two limiting blocks are parallel to the two included angle surfaces of the cavity, and the inner sidewalls of the two limiting blocks are used to position the sheet. The two limiting blocks are mainly used to position the sheet, and in use, the two sides of the sheet directly rest against the inner sidewalls of the limiting blocks.

[0008] In some embodiments, the upper mold carrier is further fixedly provided with at least one pin for fixing the sheet material, the pin being located within the area enclosed by the inner sidewalls of the two limiting blocks. The number of pins can be increased or decreased as needed. After the sheet material is positioned by the limiting blocks, it is pressed into the pin, ensuring that the sheet material is fixed in the preset position and not easily moved.

[0009] In some embodiments, the upper mold unit further includes a pre-pressing mechanism mounted on the upper mold mounting plate for pressing the sheet material onto the lower mold carrier. The pre-pressing mechanism includes a pre-pressing block, a spring post fixedly connected to the pre-pressing block and movable vertically relative to the upper mold mounting plate, a compression spring sleeved around the outer periphery of the spring post and with its two ends respectively pressing against the pre-pressing block and the upper mold mounting plate, and a retaining ring fixedly disposed at the upper end of the spring post to prevent the spring post from detaching downwards from the upper mold mounting plate. During the downward pressing process of the upper mold unit, the pre-pressing block of the pre-pressing mechanism presses the sheet material onto the lower mold carrier. During protrusion pressing, this pre-pressing mechanism can press the sheet material firmly, preventing it from being stretched and displaced, thereby ensuring the finished quality of the prefabricated corner sheet.

[0010] In some embodiments, the preload block includes a preload plate fixedly connected to the spring column, and a preload wear block detachably fixedly connected to the preload plate. This detachability can be achieved using bolted connections, with the preload wear block being a wear component and employing a detachable structure for easy replacement later. Furthermore, preload wear blocks of different thicknesses can be replaced to adapt to different mold applications, thereby increasing flexibility.

[0011] In some embodiments, the preload block is located within the area enclosed by the inner sidewalls of the two limiting blocks.

[0012] In some implementations, two lower mold units are fixedly mounted on the same mold fixing plate, which is connected to the upper mold plate by guide rods and guide sleeves for relative pressing.

[0013] In some embodiments, the pressing drive device is a cylinder or hydraulic cylinder connected to the mold fixing plate.

[0014] In some embodiments, a lower mold temperature control sensor is also provided in the lower mold carrier, and an upper mold temperature control sensor is also provided in the upper mold carrier. The temperature control sensors are mainly used to provide temperature feedback, thereby facilitating the control of the heating temperature of the heating rod.

[0015] In some embodiments, the pressing plate is fixedly connected to the machine tool via guide posts that are fixedly mounted to the machine tool.

[0016] As can be seen from the above technical solution, this application has at least the following advantages and positive effects:

[0017] This application discloses a battery box cover R-corner forming equipment, which can pre-form corner pieces by pressing the lower mold unit and the upper mold unit. The corner pieces formed by pressing them separately are not prone to wrinkles, which can solve the problem of poor product appearance and forming in related technologies. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0019] Figure 2 This is a partial structural schematic diagram of an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the lower mold unit and the upper mold unit during pressing in an embodiment of this application;

[0021] Figure 4 This is a schematic diagram of the lower module unit in an embodiment of this application;

[0022] Figure 5 This is a schematic diagram of the upper mold unit in an embodiment of this application;

[0023] Figure 6 This is a cross-sectional view of the upper mold unit in an embodiment of this application.

[0024] Labeling Explanation: 1. Machine base; 2. Lower mold assembly; 21. Lower mold unit; 211. Lower mold fixing plate; 212. Lower mold heat insulation plate; 213. Lower mold carrier; 2131. Cavity; 21311. Angle surface; 214. Lower mold heating rod; 215. Limiting block; 2151. Inner side wall; 216. Pin; 217. Lower mold temperature control sensor; 3. Upper mold assembly; 31. Pressing plate; 32. Upper mold unit; 321. Upper mold mounting plate; 322. Upper mold heat insulation plate; 323. Upper mold carrier; 3231. Protrusion; 324. Upper mold heating rod; 325. Pre-pressing mechanism; 3251. Pre-pressing block; 32511. Pre-pressing plate; 32512. Pre-pressing wear block; 3252. Spring pillar; 3253. Compression spring; 3254. Retaining ring; 326. Upper mold temperature control sensor; 33. Pressing drive device; 34. Mold fixing plate; 35. Guide rod; 36. Guide post; 4. Sheet material; Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The terminology used in the embodiments section of this application is only for explaining specific embodiments and is not intended to limit the application.

[0026] See Figures 1 to 6 This application provides a battery box cover R-corner forming device, including a machine base 1, a lower mold assembly 2 disposed on the machine base 1, and an upper mold assembly 3 disposed on the machine base 1 and located above the lower mold assembly 2. The lower mold assembly 2 includes at least one lower mold unit 21 mounted on the machine base 1. Each lower mold unit 21 includes a lower mold fixing plate 211 fixedly connected to the machine base 1, a lower mold heat insulation plate 212 fixedly mounted on the lower mold fixing plate 211, a lower mold carrier 213 fixedly mounted on the lower mold heat insulation plate 212, and a lower mold heating rod 214 fixedly mounted on the lower mold carrier 213 for heating the lower mold carrier 213. The lower mold carrier 213 is provided with a cavity 2131 that is recessed and corresponds to the corner shape of the product. The upper mold assembly 3 includes a pressing upper plate 31 fixedly disposed above the lower mold assembly 2, and at least one vertically movable relative to the pressing upper plate 31. The upper mold unit 32 and the pressing drive device 33 mounted on the pressing plate 31 for driving the upper mold unit 32 to move up and down; the upper mold unit 32 includes an upper mold mounting plate 321, an upper mold heat insulation plate 322 fixedly mounted on the upper mold mounting plate 321, an upper mold carrier 323 fixedly mounted on the upper mold heat insulation plate 322, and an upper mold heating rod 324 fixedly mounted on the upper mold carrier 323 for heating the upper mold carrier 323. The upper mold carrier 323 is provided with a protrusion 3231 that protrudes downward and corresponds to the shape of the inner wall of the corner of the product. The upper mold carrier 323 and the lower mold carrier 213 are arranged opposite to each other. During the pressing process of the upper mold carrier 323, the protrusion 3231 of the lower mold carrier 213 enters the cavity 2131 of the upper mold carrier 323, so that the cavity 2131 and the protrusion 3231 cooperate to press the sheet 4 into a preset corner sheet.

[0027] The number of lower mold unit 21 and upper mold unit 32 can be set as needed; in this embodiment, there are eight. The function of the lower mold heat insulation plate 212 and the upper mold heat insulation plate 322 is to block the lower mold carrier 213 and the upper mold carrier 323, preventing excessive heat loss. The materials of the lower mold heat insulation plate 212 and the upper mold heat insulation plate 322 can be Teflon.

[0028] This battery box cover R-corner forming equipment can pre-form corner pieces by pressing the lower mold unit 21 and the upper mold unit 32. The corner pieces formed by pressing them separately are not prone to wrinkles, which can solve the problem of poor product appearance and forming in related technologies.

[0029] See Figure 4The upper mold carrier 323 is also fixedly provided with two vertically distributed limiting blocks 215. The inner sidewalls 2151 of the two limiting blocks 215 are parallel to the two included angle surfaces 21311 of the cavity 2131, and the inner sidewalls 2151 of the two limiting blocks 215 are used to position the sheet 4. The two limiting blocks 215 are mainly used to position the sheet 4. When in use, the two sides of the sheet 4 directly rest against the inner sidewalls 2151 of the limiting blocks 215.

[0030] See Figure 2 and Figure 4 At least one pin 216 for fixing the sheet 4 is fixedly installed on the upper mold carrier 323. The pin 216 is located in the area enclosed by the inner sidewalls 2151 of the two limiting blocks 215. The number of pins 216 can be increased or decreased as needed. After the sheet 4 is positioned by the limiting blocks 215, it is pressed into the pin 216 to ensure that the sheet 4 is fixed in the preset position and does not move easily.

[0031] See Figure 3 , Figure 5 and Figure 6 The upper mold unit 32 also includes a pre-pressing mechanism 325 mounted on the upper mold mounting plate 321 for pressing the sheet 4 onto the lower mold carrier 213. The pre-pressing mechanism 325 includes a pre-pressing block 3251, a spring column 3252 fixedly connected to the pre-pressing block 3251 and movable up and down relative to the upper mold mounting plate 321, a compression spring 3253 sleeved on the outer periphery of the spring column 3252 and pressing the pre-pressing block 3251 and the upper mold mounting plate 321 at both ends respectively, and a retaining ring 3254 fixedly disposed on the upper end of the spring column 3252 to prevent the spring column 3252 from detaching downward from the upper mold mounting plate 321. During the downward pressing process of the upper mold unit, the pre-pressing block 3251 of the pre-pressing mechanism 325 presses the sheet 4 onto the lower mold carrier 213. When the protrusion 3231 is pressed, the pre-pressing mechanism 325 can press the sheet 4 to prevent the sheet 4 from being stretched and displaced, thereby ensuring the finished quality of the prefabricated corner sheet.

[0032] The preload block 3251 includes a preload plate 32511 fixedly connected to the spring column 3252, and a preload wear block 32512 detachably fixedly connected to the preload plate 32511. This detachable design can be achieved using bolted connections. The preload wear block 32512, being a wear component, is designed for easy replacement. Furthermore, preload wear blocks 32512 of varying thicknesses can be replaced to accommodate different mold applications, thus increasing flexibility.

[0033] The pre-compression block 3251 is located in the area enclosed by the inner sidewalls 2151 of the two limiting blocks 215.

[0034] Two lower mold units 21 are fixedly installed on the same mold fixing plate 34. The mold fixing plate 34 is connected to the upper plate 31 by guide rods 35 and guide sleeves for relative pressing.

[0035] The pressing drive device 33 is a cylinder or hydraulic cylinder connected to the mold fixing plate 34.

[0036] The lower mold carrier 213 is also equipped with a lower mold temperature control sensor 217, and the upper mold carrier 323 is also equipped with an upper mold temperature control sensor 326. The temperature control sensors are mainly used to provide temperature feedback, thereby facilitating the control of the heating temperature of the heating rod.

[0037] The pressing plate 31 is fixedly connected to the machine base 1 via the guide post 36 which is fixedly installed on the machine base 1.

[0038] The following is a brief description of the working process and usage method of a battery box cover R-angle forming device according to the above embodiments:

[0039] See Figure 1 In the initial state, the upper mold unit 32 is located above the lower mold unit 21. The two sides of the sheet 4 are aligned with the inner walls 2151 of the two limiting blocks 215, and inserted downwards into the pins 216, at which point the sheet 4 is in place. The sheet 4 is placed in each lower mold unit 21 in the same manner. The equipment is then started, and the pressing drive device 33 drives each upper mold unit 32 to press down. During the descent of the upper mold unit 32, the pre-pressing block 3251 elastically presses down on the sheet 4, and the protrusion 3231 gradually extends into the cavity 2131. The upper mold carrier 323 and the lower mold carrier 213 are heated, pre-forming the sheet 4 into corresponding corner pieces. Finally, the pressing drive device 33 drives the upper mold carrier 323 to return to its original position, completing the manufacturing process. In the next step, the four corner pieces are placed at the four corners of the battery box cover, and the four corner pieces are joined to the battery box cover through secondary hot pressing.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them; although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery case cover R-angle forming apparatus, characterized by: The application relates to a product corner sheet pressing device, which comprises a machine table, a lower die assembly arranged on the machine table, and an upper die assembly arranged on the machine table and above the lower die assembly; the lower die assembly comprises at least one lower die unit mounted on the machine table, each of the lower die units comprises a lower die fixed plate fixedly connected with the machine table, a lower die heat insulation plate fixedly mounted on the lower die fixed plate, a lower die carrier fixedly mounted on the lower die heat insulation plate, and a lower die heating rod fixedly mounted on the lower die carrier for heating the lower die carrier, and a cavity corresponding to the product corner shape is arranged on the lower die carrier; the upper die assembly comprises a pressing upper plate fixedly arranged above the lower die assembly, at least one upper die unit capable of moving up and down relative to the pressing upper plate, and a pressing driving device mounted on the pressing upper plate for driving the upper die unit to move up and down; each of the upper die units comprises an upper die mounting plate, an upper die heat insulation plate fixedly mounted on the upper die mounting plate, an upper die carrier fixedly mounted on the upper die heat insulation plate, and an upper die heating rod fixedly mounted on the upper die carrier for heating the upper die carrier, and a convex part corresponding to the shape of the inner wall of the product corner is arranged on the upper die carrier in a downward protruding mode, the upper die carrier is arranged opposite to the lower die carrier, and in the pressing process, the convex part of the lower die carrier enters the cavity of the upper die carrier, so that the cavity and the convex part cooperate to press the sheet into a preset corner sheet body.

2. The battery box cover R-angle forming apparatus according to claim 1, characterized by: The upper die carrier is further fixedly provided with two limiting blocks vertically distributed, the inner side walls of the two limiting blocks are parallel to the two corner surfaces of the cavity respectively, and the inner side walls of the two limiting blocks are used for positioning the position of the sheet.

3. The battery box cover R-angle forming apparatus according to claim 2, characterized by: The upper die carrier is further fixedly provided with at least one pin for fixing the sheet, and the pin is located in the area surrounded by the inner side walls of the two limiting blocks.

4. The battery box cover R-angle forming apparatus according to claim 2, characterized by: The upper die unit further comprises a pre-pressing mechanism mounted on the upper die mounting plate for pressing the sheet on the lower die carrier, the pre-pressing mechanism comprises a pre-pressing block, a spring column fixedly connected with the pre-pressing block and capable of moving up and down relative to the upper die mounting plate, a compression spring sleeved on the outer periphery of the spring column and abutting against the pre-pressing block and the upper die mounting plate at two ends respectively, and a stop ring fixedly arranged on the upper end of the spring column for preventing the spring column from being separated downward from the upper die mounting plate, and in the downward pressing process, the pre-pressing block of the pre-pressing mechanism presses the sheet on the lower die carrier.

5. The battery box cover R-angle forming apparatus according to claim 4, characterized by: The pre-pressing block comprises a pre-pressing plate fixedly connected with the spring column, and a pre-pressing wear block detachably fixedly connected on the pre-pressing plate.

6. The battery box cover R-angle forming apparatus according to claim 4, characterized by: The pre-pressing block is located in the area surrounded by the inner side walls of the two limiting blocks.

7. The battery box cover R-angle forming apparatus according to claim 1, characterized by: The two lower die units are fixedly mounted on the same die fixed plate, and the die fixed plate is connected with the pressing upper plate in a guiding mode through a guide rod and a guide sleeve.

8. The battery box cover R-angle forming apparatus according to claim 7, characterized by: The pressing driving device is a pneumatic cylinder or an oil cylinder connected with the die fixed plate.

9. The battery box cover R-angle forming apparatus according to claim 1, characterized by: The lower die carrier is further provided with a lower die temperature control sensor, and the upper die carrier is further provided with an upper die temperature control sensor.

10. The battery box cover R-angle forming apparatus according to claim 1, characterized by: The pressing upper plate is fixedly connected with the machine table through a guide column fixedly mounted on the machine table.

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