Hydraulic stretching equipment for battery case

Abstract

The invention discloses battery case hydraulic stretching equipment which comprises a fixed base, lower die bodies and upper die bodies, a plurality of groups of lower die bodies are fixedly mounted on the inner side of the upper end of the fixed base, a plurality of groups of upper die bodies are movably mounted above the lower die bodies, and the plurality of groups of upper die bodies are connected and fixed through stamping plates; the upper end of the punching plate is driven by a hydraulic rod, material moving clamping strips are movably installed at the positions, located on the two sides of the lower die body, of the upper end of the fixed base, a plurality of sets of deviation correctors used for positioning the battery shell are installed on the side edges of the material moving clamping strips, a cooling groove is formed in the upper die body, and the upper ends of the multiple sets of upper die bodies are connected in series through a flow guide pipe. The outer surface of the upper die body is movably sleeved with a stripper plate, a transverse clamping plate is spliced and installed at the lower end of the stripper plate, an unwinding box is slidably installed on the outer surface of one side of the fixed base, and a conveying frame is arranged at the upper end of the unwinding box. And a deviation rectifying type auxiliary material moving structure is arranged, so that the deformation phenomenon of the battery shell during continuous stamping operation can be avoided, and the stamping effect of the battery shell is improved.

Description

Technical Field

[0001] The present invention belongs to the field related to battery shell processing technology, and more specifically relates to a battery shell hydraulic stretching device. Background Art

[0002] The working principle of the battery shell hydraulic stretching equipment is based on the high pressure provided by the hydraulic system, which gradually deforms the metal sheet into the battery shell shape that meets the design requirements through the stretching process. The equipment is usually composed of hydraulic system, mold system, heating system and intelligent control system to ensure the efficiency and accuracy of the forming process.

[0003] The patent application with publication number CN117206393A records a power battery shell stamping and stretching device, including an equipment box, both ends of which are provided with mounting grooves for installing conveyor belts, a bracket is installed on the equipment box between the two sets of mounting grooves, a hydraulic system for driving the stamping die to move is installed on the bracket, a forming die is arranged below the stamping die, and also includes: a driving mechanism, the output end of the driving mechanism is respectively connected to the feeding mechanism and the unloading mechanism; the unloading mechanism includes a moving seat, a connecting column, a connecting assembly and a rotating assembly. In the power battery shell stamping and stretching device of the present invention, the loading mechanism and the unloading mechanism realize automatic loading of the shell sheet and automatic unloading of the stamping shell by cooperating with the driving mechanism, the conveyor belt and the equipment box, abandoning the manual unloading method, improving the production efficiency of the battery shell, and thus improving the working efficiency and practicality of the equipment.

[0004] The above-mentioned equipment has certain deficiencies when performing battery shell stamping and stretching operations. The shaping of the battery shell requires multiple stamping and stretching. After the battery shell completes one stamping, it needs to be transferred to another set of molds for continuous stamping. The above-mentioned equipment does not have an auxiliary positioning structure, which causes the battery shell to tilt or offset during the transfer operation, affecting the continuous stamping effect of the battery shell; secondly, when the battery shell is continuously stamped, the punch runs continuously, which increases the temperature of the punch. Long-term continuous stamping will cause the punch to overheat and reduce its hardness, thereby accelerating wear and reducing its stability during use. It does not have an auxiliary cooling structure; at the same time, the above-mentioned equipment does not have an auxiliary material transfer structure, and cannot make full use of the remaining material for stamping operations, so that the continuous stamping mold will produce more waste during the stamping process, resulting in reduced material utilization. Summary of the invention

[0005] The purpose of the present invention is to provide a battery shell hydraulic stretching device that can solve the existing problems.

[0006] The problem to be solved by the present invention is:

[0007] 1. The shaping of the battery shell requires multiple stamping and stretching. After the battery shell is stamped once, it needs to be transferred to another set of molds for continuous stamping. However, the above equipment does not have an auxiliary positioning structure, so that the battery shell will tilt or deviate during the transfer operation, affecting the continuous stamping effect of the battery shell;

[0008] 2. Secondly, when the battery shell is continuously stamped, the punch is in continuous operation, which increases the temperature of the punch. Long-term continuous stamping will overheat the punch, reduce its hardness, and accelerate wear, which reduces its stability during use, and does not have an auxiliary cooling structure;

[0009] 3. At the same time, the above equipment does not have an auxiliary material transfer structure, and cannot fully utilize the remaining materials for stamping operations, so that the continuous stamping die will generate more waste during the stamping process, resulting in reduced material utilization.

[0010] The purpose of the present invention can be achieved through the following technical solutions:

[0011] A battery shell hydraulic stretching equipment comprises a fixed base, a lower mold body and an upper mold body, a plurality of groups of lower mold bodies are fixedly installed on the inner side of the upper end of the fixed base, a plurality of groups of upper mold bodies are movably installed above the lower mold body, the plurality of groups of upper mold bodies are connected and fixed by a stamping plate, the upper end of the stamping plate is driven by a hydraulic rod, the upper end of the fixed base is located on both sides of the lower mold body and material shifting strips are movably installed, a plurality of groups of deviation correctors for positioning the battery shell are installed on the side edges of the material shifting strips, a cooling groove is provided inside the upper mold body, the upper ends of the plurality of upper mold bodies are connected in series through a guide pipe, a stripping plate is movably sleeved on the outer surface of the upper mold body, and a transverse clamping plate is spliced ​​and installed on the lower end of the stripping plate, a reel box is slidably installed on the outer surface of one side of the fixed base, and a feed rack is provided on the upper end of the reel box.

[0012] As a further technical solution of the present invention, the material shifting card strip and the fixed base are slidably connected via a sliding base, a transverse push rod for driving the material shifting card strip is arranged inside the sliding base, and several groups of sliding bases are connected and fixed by a movable frame. The material shifting card strip can be used to clamp and fix the battery shell, and when the battery shell is continuously stamped, stretched and shaped, the battery shell is continuously moved forward one station, and the transverse push rod is used to drive the material shifting card strip, so that the two groups of material shifting card strips are clamped and fixed on both sides of the battery shell, and then the sliding base is used to drive the two groups of material shifting card strips to move forward, so that the battery shell moves forward to above the next group of lower mold bodies.

[0013] As a further technical solution of the present invention, the middle position of one side of the sliding base is driven by a moving top rod, and the side and top of the material moving card strip are provided with limiting slide grooves used in conjunction with the deviation corrector. The sliding base can be driven by the moving top rod, and the setting of the moving frame can be used to make several groups of sliding bases move synchronously. The limiting slide groove can move the deviation corrector according to the position of the battery shell, adjust the position of the deviation corrector, and correct the position of the battery shell through the deviation corrector to avoid tilting of the battery shell.

[0014] As a further technical solution of the present invention, the corrector includes a docking slider and a positioning socket, the positioning socket is fixedly installed on the side outer surface of the docking slider, the corrector and the limiting slide groove are slidably connected through the docking slider, and the docking slider can be used to move the corrector as a whole so that the correctors on both sides are aligned with each other. At the same time, the position of the corrector can be adjusted as a whole according to the position of the battery shell.

[0015] As a further technical solution of the present invention, two groups of side-rotating clamps are movably installed on one side of the positioning base, and the positioning base and the side-rotating clamps are movably connected via a rotating slide. A slide groove is provided on the side of the positioning base for cooperating with the rotating slide. The rotating slide is moved by the slide groove, and the distance between the two groups of side-rotating clamps can be adjusted on the positioning base, so that the two groups of side-rotating clamps can meet the fixing operation of battery shells of different sizes. When the two groups of deviation correctors move, the side-rotating clamps contact the sides of the battery shell. When the battery shell is stuck between the two groups of side-rotating clamps, the angle of the battery shell is corrected by the side-rotating clamps, so that the battery shell is vertically installed on the two groups of side-rotating clamps, so that the corrected battery shell and the mold body are accurately docked.

[0016] As a further technical solution of the present invention, several groups of guide wheels are movably installed on the side of the side-rotating clamp block, and the rotating slide and the positioning clamp seat as well as the docking slider and the material transfer clamp strip are all locked and fixed by fastening bolts. The fastening bolts can be used to lock and fix the moving rotating slide and the docking slider. Secondly, the setting of the guide wheels can reduce the friction between the side-rotating clamp block and the battery shell when they contact. At the same time, the side-rotating clamp block can make corresponding tilt adjustments according to the angle of the battery shell. When the battery shell is completely inserted between the two groups of side-rotating clamp blocks, the battery shell correction operation is completed.

[0017] As a further technical solution of the present invention, a cooling groove is provided inside the upper mold body, and a circulating pump is provided at the end of the guide pipe. An upper cover is installed above the fixed base, and the stripping plate and the upper cover are connected and fixed by a lifting push rod. When the upper mold body is in use, the circulating pump can be used to transport the coolant to several groups of upper mold bodies through the guide pipe, so that the coolant circulates in several groups of upper mold bodies to complete the cooling of the upper mold body and avoid accelerated wear of the upper mold body under high temperature conditions.

[0018] As a further technical solution of the present invention, an adjustment frame is installed at the lower part of the stripping plate, and a rectangular slot is provided in the middle of the stripping plate. A roller is movably installed on the inner side of the rectangular slot. When the upper mold body moves upward, the separation operation between the upper mold body and the battery shell can be completed by cooperating with the stripping plate and the adjustment frame, so that the material moving card strips can clamp and fix the two sides of the battery shell.

[0019] As a further technical solution of the present invention, two groups of transverse clamps are slidably installed at the bottom of the adjusting frame, and the stripping plate and the adjusting frame are spliced ​​and fixed by docking clamps. By setting the rollers, the friction between the stripping plate and the upper mold body can be reduced. Secondly, the two groups of transverse clamps can be moved according to the width of the upper mold body, so that the two groups of transverse clamps are located on both sides of the upper mold body. When the upper mold body moves upward, the stripping plate remains fixed under the action of the lifting push rod, so that the two groups of transverse clamps push the battery shell downward, thereby separating the battery shell and the upper mold body.

[0020] As a further technical solution of the present invention, a side material box is fixedly installed on one side of the unwinding box, the bottom of the unwinding box and the side material box are both provided with casters, a unwinding rod is movably installed on the inner side of the unwinding box, and a feeding rack is fixedly installed on the upper ends of the unwinding box and the side material box, and a feeding roller is movably installed on the inner side of the feeding rack, the unwinding box and the fixed base, as well as the side material box and the fixed base are all slidably connected by sliding strips, and a material storage box is provided at one end of the fixed base, and the casters are driven by a motor so that the unwinding box and the side material box can move on both sides of the fixed base, and the motor is used to drive the feeding roller to rotate, and the unwinding rod is cooperated to complete the release operation of the metal coil, so that the metal material passes through the bottom of the punching die, and when the stamping plate drives the punching die to move downward, the metal material is punched once, and the unwinding box and the side material box are driven to translate by the casters, and the punching position of the metal material is adjusted, so that the punching die can perform punching operations on the remaining metal material, thereby reducing material loss.

[0021] Beneficial effects of the present invention:

[0022] 1. By setting a material transfer card strip and a deviation corrector, when the battery shell hydraulic stretching equipment is used, it has a deviation correcting auxiliary material transfer structure, which can avoid deformation of the battery shell during continuous stamping operation and improve the stamping effect of the battery shell;

[0023] During operation, the metal coil is released through the unwinding rod and the feeding rack, so that the coil passes through the lower part of the punching die, and the stamping plate is driven by the hydraulic rod, so that the stamping plate drives the punching die and several groups of upper mold bodies to move downward at the same time, and the punching die is used to complete the preliminary punching and shaping of the battery shell, so that the battery shell is separated from the metal coil. The battery shell can be clamped and fixed by the setting of the material shifting card strip. When the battery shell is continuously stamped, stretched and shaped, the battery shell is continuously moved forward one station, and the material shifting card strip is driven by the horizontal push rod so that the two groups of material shifting card strips are clamped and fixed on both sides of the battery shell. The sliding base can be driven by the moving top rod, and the several groups of sliding bases can be moved synchronously with the setting of the moving rack. The sliding base drives the two groups of material shifting card strips forward, so that the battery shell moves forward to the top of the next group of lower mold bodies, and the limiting slide groove cooperates with the docking slider to move the corrector according to the stamping position of the battery shell, adjust the docking position of the corrector, and correct the position of the battery shell through the corrector to avoid the battery shell from The tilt phenomenon can be corrected by moving the deviation corrector as a whole through the docking slider, so that the deviation correctors on both sides are aligned with each other, so that the position of the deviation corrector can be adjusted as a whole according to the position of the battery shell. Secondly, the sliding groove is used to move the rotating slide, and the distance between the two sets of side-rotating clamps can be adjusted on the positioning clamp, so that the two sets of side-rotating clamps can meet the fixing operation of battery shells of different sizes. When the two sets of deviation correctors move, the side-rotating clamps contact the sides of the battery shell. When the battery shell is stuck between the two sets of side-rotating clamps, the angle of the battery shell is corrected by the side-rotating clamps, so that the battery shell is vertically installed on the two sets of side-rotating clamps, so that the corrected battery shell and the mold body are accurately docked. The fastening bolt can be used to lock and fix the moved rotating slide and the docking slider. Secondly, the setting of the guide wheel can reduce the friction when the side-rotating clamps contact the battery shell. At the same time, the side-rotating clamps can make corresponding tilt adjustments according to the angle of the battery shell. When the battery shell is completely stuck between the two sets of side-rotating clamps, the battery shell correction operation is completed.

[0024] 2. By setting a circulating pump and a guide pipe, when the battery shell hydraulic stretching equipment is used, it has a stamping cooling structure, so that its mold always maintains a good stamping effect and improves its stability;

[0025] When the upper mold body is in use, a circulating pump can be used to transport the coolant to several groups of upper mold bodies through the guide pipe. The upper mold body is provided with a cooling groove inside, so that the coolant can pass through the inside of the upper mold body, and has a cooling effect on the metal upper mold body. The coolant circulates in several groups of upper mold bodies to complete the cooling of the upper mold body, avoid accelerated wear of the upper mold body under high temperature conditions, and improve its stability during stamping and finalizing;

[0026] Secondly, when the upper mold body moves upward, the separation operation between the upper mold body and the battery shell can be completed by cooperating with the stripping plate and the adjusting frame, which makes it convenient for the material moving card bar to clamp and fix the two sides of the battery shell. The optimized stripping structure can reduce the friction contact with the upper mold body and reduce the temperature of the upper mold body. The friction between the stripping plate and the upper mold body can be reduced by setting the roller. Secondly, the two sets of horizontal card plates can be moved according to the width of the upper mold body, so that the two sets of horizontal card plates are located on both sides of the upper mold body. When the upper mold body moves upward, the stripping plate remains fixed under the action of the lifting push rod, so that the two sets of horizontal card plates push the battery shell downward, thereby separating the battery shell and the upper mold body.

[0027] 3. Through the unwinding box and the edge material box, when the battery shell hydraulic stretching equipment is used, it is provided with an auxiliary material transfer structure, which can make full use of the remaining materials for battery shell processing and reduce the material loss rate;

[0028] During operation, the casters are driven by a motor so that the unwinding box and the edge material box can move on both sides of the fixed base, and the motor is used to drive the feed roller to rotate, and cooperate with the unwinding rod to complete the release operation of the metal coil, so that the metal material passes under the punching die. When the stamping plate drives the punching die to move downward, the metal material is punched once, and the unwinding box and the edge material box are driven to move horizontally by the casters to adjust the punching position of the metal material, and the remaining metal material is translated to the bottom of the punching die, so that the punching die can punch the remaining metal material, thereby reducing material loss and improving material utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] Figure 1 It is a schematic diagram of the overall structure of a battery shell hydraulic stretching device of the present invention;

[0031] Figure 2 This is an overall structural diagram of a material transfer card strip in a battery shell hydraulic stretching device of the present invention;

[0032] Figure 3 It is a planar structural diagram of a deviation corrector in a battery shell hydraulic stretching device of the present invention;

[0033] Figure 4 It is an overall structural diagram of a deviation corrector in a battery shell hydraulic stretching device of the present invention;

[0034] Figure 5 It is an overall structural diagram of a lower mold body and an upper mold body in a battery shell hydraulic stretching device of the present invention;

[0035] Figure 6 It is an overall structural diagram of a stripping plate in a battery shell hydraulic stretching device of the present invention;

[0036] Figure 7It is an overall structural diagram of an unwinding box and a side material box in a battery shell hydraulic stretching device of the present invention.

[0037] In the figure: 1. unwinding box; 2. fixed base; 3. material transfer card strip; 4. material storage box; 5. lower mold body; 6. upper mold body; 7. hydraulic rod; 8. lifting push rod; 9. punching plate; 10. punching and cutting die; 11. feed rack; 12. mobile rack; 13. sliding base; 14. horizontal push rod; 15. limit slide; 16. mobile push rod; 17. deviation corrector; 18. docking slide block; 19. side rotating clamp block; 20. positioning card seat; 21. fastening bolt; 22. rotating slide seat; 23. guide wheel; 24. circulating pump; 25. stripping plate; 26. unwinding rod; 27. feed roller rod; 28. docking clamp head; 29. ​​horizontal clamp plate; 30. adjustment frame; 31. roller; 32. side material box; 33. sliding card strip; 34. guide pipe. DETAILED DESCRIPTION

[0038] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0039] like Figure 1 As shown, a battery shell hydraulic stretching equipment includes a fixed base 2, a lower mold body 5 and an upper mold body 6, a plurality of groups of lower mold bodies 5 are fixedly installed on the inner side of the upper end of the fixed base 2, a plurality of groups of upper mold bodies 6 are movably installed above the lower mold body 5, the plurality of groups of upper mold bodies 6 are connected and fixed by a stamping plate 9, the upper end of the stamping plate 9 is driven by a hydraulic rod 7, the upper end of the fixed base 2 is located on both sides of the lower mold body 5, and a material shifting card strip 3 is movably installed, and a plurality of groups of deviation correctors 17 for positioning the battery shell are installed on the side of the material shifting card strip 3, a cooling groove is arranged inside the upper mold body 6, the upper ends of the plurality of upper mold bodies 6 are connected in series through a guide tube 34, a stripping plate 25 is movably sleeved on the outer surface of the upper mold body 6, and a transverse card plate 29 is spliced ​​and installed on the lower end of the stripping plate 25, a reel box 1 is slidably installed on the outer surface of one side of the fixed base 2, and a material conveying rack 11 is arranged on the upper end of the reel box 1.

[0040] To solve the problem of tilting when the battery case moves, such as Figure 2As shown, the material moving card strip 3 and the fixed base 2 are slidably connected by a sliding base 13, and a transverse push rod 14 for driving the material moving card strip 3 is arranged inside the sliding base 13. Several groups of sliding bases 13 are connected and fixed by a movable frame 12. The material moving card strip 3 can be used to clamp and fix the battery shell. When the battery shell is continuously stamped and stretched to shape, the battery shell is continuously moved forward one station, and the transverse push rod 14 is used to drive the material moving card strip 3, so that the two groups of material moving card strips 3 are clamped and fixed on both sides of the battery shell, and the sliding base 13 is used to drive the two groups of material moving card strips 3 to move forward, so that the battery shell moves forward to the top of the next group of lower mold bodies 5.

[0041] The middle position of one side of the sliding base 13 is driven by a moving push rod 16. The side and top of the material transfer card strip 3 are provided with a limiting slide groove 15 used in conjunction with the deviation corrector 17. The moving push rod 16 can drive the sliding base 13, and the setting of the moving frame 12 can make several groups of sliding bases 13 move synchronously. The limiting slide groove 15 can move the deviation corrector 17 according to the position of the battery block, and adjust the position of the deviation corrector 17. The position of the battery block can be corrected by the deviation corrector 17 to avoid tilting of the battery shell.

[0042] like Figure 3 As shown, the corrector 17 includes a docking slider 18 and a positioning socket 20. The positioning socket 20 is fixedly installed on the side outer surface of the docking slider 18. The corrector 17 and the limiting slide groove 15 are slidably connected through the docking slider 18. The docking slider 18 can be used to move the corrector 17 as a whole, so that the correctors 17 on both sides are aligned with each other. At the same time, the position of the corrector 17 can be adjusted as a whole according to the position of the battery shell.

[0043] To solve the problem of tilting when the battery case moves, such as Figure 4 As shown, two groups of side-rotating clamps 19 are movably installed on one side of the positioning base 20, and the positioning base 20 and the side-rotating clamps 19 are movably connected via a rotating slide 22. A slide groove is provided on the side of the positioning base 20 for use with the rotating slide 22. The rotating slide 22 is moved by the slide groove, and the distance between the two groups of side-rotating clamps 19 can be adjusted on the positioning base 20, so that the two groups of side-rotating clamps 19 can meet the fixing operation of battery shells of different sizes. When the two groups of deviation correctors 17 move, the side-rotating clamps 19 contact the sides of the battery shell. When the battery shell is stuck between the two groups of side-rotating clamps 19, the angle of the battery shell is corrected by the side-rotating clamps 19, so that the battery shell is vertically installed on the two groups of side-rotating clamps 19, so that the corrected battery shell and the mold body are accurately docked.

[0044] like Figure 4As shown, several groups of guide wheels 23 are movably installed on the side of the side-rotating clamp 19, and the rotating slide 22 and the positioning clamp 20 as well as the docking slider 18 and the material transfer clamp 3 are locked and fixed by fastening bolts 21. The fastening bolts 21 can be used to lock and fix the rotating slide 22 and the docking slider 18 after movement. Secondly, the setting of the guide wheels 23 can reduce the friction between the side-rotating clamp 19 and the battery shell when they are in contact. At the same time, the side-rotating clamp 19 can make corresponding tilt adjustments according to the angle of the battery block. When the battery shell is fully inserted between the two groups of side-rotating clamps 19, the battery shell correction operation is completed.

[0045] To solve the problem of mold cooling during continuous stamping, such as Figure 5 As shown, a cooling groove is provided inside the upper mold body 6, and a circulating pump 24 is provided at the end of the guide pipe 34. An upper cover is installed above the fixed base 2, and the stripping plate 25 and the upper cover are connected and fixed by a lifting push rod 8. When the upper mold body 6 is in use, the circulating pump 24 can be used to transport the coolant to several groups of upper mold bodies 6 through the guide pipe 34, so that the coolant circulates in several groups of upper mold bodies 6, thereby completing the cooling of the upper mold body 6 and avoiding accelerated wear of the upper mold body 6 under high temperature conditions.

[0046] like Figure 6 As shown, the lower part of the stripping plate 25 is spliced ​​and installed with an adjusting frame 30, the middle part of the stripping plate 25 has a rectangular notch, and the inner side of the rectangular notch is movably installed with a roller 31. When the upper mold body 6 moves upward, the stripping plate 25 cooperates with the adjusting frame 30 to complete the separation operation between the upper mold body 6 and the battery shell, making it convenient for the material moving card strip 3 to clamp and fix the two sides of the battery shell.

[0047] Two groups of transverse clamps 29 are slidably installed at the bottom of the adjusting frame 30. The stripping plate 25 and the adjusting frame 30 are spliced ​​and fixed by docking clamps 28. The setting of the roller 31 can reduce the friction between the stripping plate 25 and the upper mold body 6. Secondly, the two groups of transverse clamps 29 can be moved according to the width of the upper mold body 6, so that the two groups of transverse clamps 29 are located on both sides of the upper mold body 6. When the upper mold body 6 moves upward, the stripping plate 25 remains fixed under the action of the lifting push rod 8, so that the two groups of transverse clamps 29 push the battery shell downward, so that the battery shell and the upper mold body 6 are separated.

[0048] To solve the problem of material translation during stamping operation, such as Figure 7As shown, a side material box 32 is fixedly installed on one side of the unwinding box 1, and casters are provided at the bottom of the unwinding box 1 and the side material box 32. A unwinding rod 26 is movably installed on the inner side of the unwinding box 1. A material feeding rack 11 is fixedly installed on the upper ends of the unwinding box 1 and the side material box 32, and a material feeding roller 27 is movably installed on the inner side of the material feeding rack 11. The unwinding box 1 and the fixed base 2 as well as the side material box 32 and the fixed base 2 are slidably connected by a sliding card strip 33. A material storage box 4 is provided at one end of the fixed base 2, and the casters are driven by a motor. The unwinding box 1 and the edge material box 32 can move on both sides of the fixed base 2, and the motor is used to drive the feed roller 27 to rotate, and the unwinding rod 26 is cooperated to complete the release operation of the metal coil, so that the metal material passes under the punching die 10. When the punching die 10 is driven by the stamping plate 9 to move downward, the metal material is punched once, and the unwinding box 1 and the edge material box 32 are driven to move horizontally by casters to adjust the punching position of the metal material, so that the punching die 10 can punch the remaining metal material, thereby reducing material loss.

[0049] During use, the shaping of the battery shell needs to be done through multiple stamping and stretching. After the battery shell is stamped once, it needs to be transferred to another set of dies for continuous stamping. However, the above-mentioned equipment does not have an auxiliary positioning structure, so that the battery shell will be tilted or offset during the transfer operation, affecting the continuous stamping effect of the battery shell.

[0050] By providing the material transfer card strip 3 and the deviation corrector 17, when the battery shell hydraulic stretching device is used, it has a deviation correcting auxiliary material transfer structure, which can avoid deformation of the battery shell during continuous stamping operations and improve the stamping effect of the battery shell;

[0051] During operation, the metal coil is released by the unwinding rod 26 in cooperation with the feeding rack 11, so that the coil passes through the lower part of the punching die 10, and the punching plate 9 is driven by the hydraulic rod 7, so that the punching plate 9 simultaneously drives the punching die 10 and several groups of upper mold bodies 6 to move downward, and the punching die 10 is used to complete the preliminary punching and shaping of the battery shell, so that the battery shell is separated from the metal coil. The battery shell can be clamped and fixed by the setting of the material transfer card strip 3. When the battery shell is continuously punched, stretched and shaped, the battery shell is continuously moved forward by one station, and the material transfer card strip is driven by the lateral push rod 14. The two groups of material moving card strips 3 are clamped and fixed on both sides of the battery shell, and the sliding base 13 can be driven by the movable top rod 16, and the setting of the movable frame 12 can make several groups of sliding bases 13 move synchronously, and the sliding base 13 drives the two groups of material moving card strips 3 to move forward, so that the battery shell moves forward to the top of the next group of lower mold bodies 5, and the limiting slide groove 15 cooperates with the docking slider 18 to move the corrector 17 according to the punching position of the battery shell, adjust the docking position of the corrector 17, and the position of the battery shell can be corrected by the corrector 17 to avoid the battery shell from being out of place. The deviation corrector 17 is tilted, and the correction device 17 can be moved as a whole through the docking slider 18, so that the correction devices 17 on both sides are aligned with each other, so that the position of the correction device 17 can be adjusted as a whole according to the position of the battery shell. Secondly, the sliding groove is used to move the rotating slide 22, and the distance between the two sets of side rotating clamps 19 can be adjusted on the positioning clamp 20, so that the two sets of side rotating clamps 19 can meet the fixing operation of battery shells of different sizes. When the two sets of correction devices 17 move, the side rotating clamps 19 contact the side of the battery shell. When the battery shell is stuck between the two sets of side rotating clamps 19, the side rotating clamps 19 are used to adjust the distance between the two sets of side rotating clamps 19. The rotating clamp block 19 corrects the angle of the battery shell so that the battery shell is vertically mounted on the two sets of side rotating clamp blocks 19, so that the corrected battery shell and the mold body are precisely docked. The fastening bolt 21 can be used to lock and fix the moving rotating slide 22 and the docking slide block 18. Secondly, the setting of the guide wheel 23 can reduce the friction when the side rotating clamp block 19 contacts the battery shell. At the same time, the side rotating clamp block 19 can make corresponding tilt adjustments according to the angle of the battery shell. When the battery shell is completely inserted between the two sets of side rotating clamp blocks 19, the battery shell deviation correction operation is completed;

[0052] Secondly, when the battery shell is continuously stamped, the punch is in continuous operation, which increases the temperature of the punch. Long-term continuous stamping will overheat the punch, reduce its hardness, and accelerate wear, which reduces its stability during use, and there is no auxiliary cooling structure.

[0053] To this end, by providing a circulating pump 24 and a guide pipe 34, when the battery shell hydraulic stretching device is used, it has a stamping cooling structure, so that its mold always maintains a good stamping effect and improves its stability;

[0054] When in use, when the upper mold body 6 is in use, the circulating pump 24 can be used to transport the coolant to several groups of upper mold bodies 6 through the guide pipe 34. The upper mold body 6 is provided with a cooling groove inside, so that the coolant can pass through the inside of the upper mold body 6, and the upper mold body 6 made of metal material has a cooling effect, so that the coolant circulates in several groups of upper mold bodies 6 to complete the cooling of the upper mold body 6, avoid accelerated wear of the upper mold body 6 under high temperature conditions, and improve its stability during stamping and finalization;

[0055] Secondly, when the upper mold body 6 moves up, the stripping plate 25 cooperates with the adjusting frame 30 to complete the separation operation between the upper mold body 6 and the battery shell, which is convenient for the material moving card strip 3 to clamp and fix the two sides of the battery shell. The optimized stripping structure can reduce the friction contact with the upper mold body 6 and reduce the temperature of the upper mold body 6. The setting of the roller 31 can reduce the friction between the stripping plate 25 and the upper mold body 6. Secondly, according to the width of the upper mold body 6, the two groups of horizontal card plates 29 can be moved so that the two groups of horizontal card plates 29 are located on both sides of the upper mold body 6. When the upper mold body 6 moves up, the stripping plate 25 remains fixed under the action of the lifting push rod 8, so that the two groups of horizontal card plates 29 push the battery shell downward, so that the battery shell and the upper mold body 6 are separated;

[0056] At the same time, the above equipment does not have an auxiliary material transfer structure, and cannot fully utilize the remaining materials for stamping operations, so that the continuous stamping die will produce more waste during the stamping process, resulting in a decrease in material utilization;

[0057] To this end, through the unwinding box 1 and the edge material box 32, when the battery shell hydraulic stretching equipment is used, it is provided with an auxiliary material moving structure, which can make full use of the remaining materials for battery shell processing and reduce the material loss rate;

[0058] During operation, the casters are driven by a motor so that the unwinding box 1 and the edge material box 32 can move on both sides of the fixed base 2, and the motor is used to drive the feed roller 27 to rotate, and cooperate with the unwinding rod 26 to complete the release operation of the metal coil, so that the metal material passes under the punching die 10. When the punching die 10 is driven by the stamping plate 9 to move downward, the metal material is punched once, and the unwinding box 1 and the edge material box 32 are driven to translate by the casters to adjust the punching position of the metal material, and the remaining metal material is translated to the bottom of the punching die 10, so that the punching die 10 can perform punching operations on the remaining metal material, thereby reducing material loss and improving material utilization.

[0059] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A battery shell hydraulic stretching device, characterized in that: The invention comprises a fixed base (2), a lower mold body (5) and an upper mold body (6), wherein a plurality of groups of lower mold bodies (5) are fixedly installed on the inner side of the upper end of the fixed base (2), a plurality of groups of upper mold bodies (6) are movably installed above the lower mold bodies (5), the plurality of groups of upper mold bodies (6) are connected and fixed by a stamping plate (9), the upper end of the stamping plate (9) is driven by a hydraulic rod (7), the upper end of the fixed base (2) is located on both sides of the lower mold body (5) and a material transfer card strip (3) is movably installed, and the material transfer card strip The side of (3) is provided with a plurality of groups of correctors (17) for positioning the battery shell, the interior of the upper mold body (6) is provided with a cooling groove, the upper ends of the plurality of groups of upper mold bodies (6) are connected in series through a guide tube (34), the outer surface of the upper mold body (6) is movably sleeved with a stripping plate (25), and the lower end of the stripping plate (25) is spliced ​​and installed with a transverse clamping plate (29), the outer surface of one side of the fixed base (2) is slidably installed with a reeling box (1), and the upper end of the reeling box (1) is provided with a feed rack (11).

2. A battery shell hydraulic stretching device according to claim 1, characterized in that: The material transfer card strip (3) and the fixed base (2) are slidably connected via a sliding base (13), a transverse push rod (14) for driving the material transfer card strip (3) is arranged inside the sliding base (13), and a plurality of groups of sliding bases (13) are connected and fixed via a moving frame (12).

3. A battery shell hydraulic stretching device according to claim 2, characterized in that: The middle position of one side of the sliding base (13) is driven by a movable top rod (16), and the side and top of the material transfer card strip (3) are provided with a limiting slide groove (15) used in conjunction with the deviation corrector (17).

4. A battery shell hydraulic stretching device according to claim 1, characterized in that: The deflection corrector (17) comprises a docking slider (18) and a positioning card seat (20), wherein the positioning card seat (20) is fixedly mounted on the side outer surface of the docking slider (18), and the deflection corrector (17) and the limiting slide groove (15) are slidably connected via the docking slider (18).

5. A battery shell hydraulic stretching device according to claim 4, characterized in that: Two groups of side rotating clamps (19) are movably mounted on one side of the positioning clamp (20); the positioning clamp (20) and the side rotating clamp (19) are movably connected via a rotating slide (22); and a sliding groove for cooperating with the rotating slide (22) is provided on the side of the positioning clamp (20).

6. A battery shell hydraulic stretching device according to claim 5, characterized in that: A plurality of guide wheels (23) are movably mounted on the side of the side-rotating clamp block (19), and the rotating slide seat (22), the positioning clamp seat (20), the docking slide block (18) and the material transfer clamping strip (3) are all locked and fixed by means of a fastening bolt (21).

7. A battery shell hydraulic stretching device according to claim 6, characterized in that: A cooling groove is provided inside the upper mold body (6), and a circulating pump (24) is provided at the end of the guide pipe (34). An upper cover is installed above the fixed base (2), and the stripping plate (25) and the upper cover are fixedly connected by a lifting push rod (8).

8. The battery shell hydraulic stretching equipment according to claim 1, characterized in that: An adjusting frame (30) is spliced ​​and installed at the lower part of the stripping plate (25), and a rectangular notch is provided in the middle part of the stripping plate (25), and a roller (31) is movably installed inside the rectangular notch.

9. A battery shell hydraulic stretching device according to claim 8, characterized in that: Two groups of transverse clamping plates (29) are slidably mounted on the bottom of the adjusting frame (30), and the stripping plate (25) and the adjusting frame (30) are spliced ​​and fixed via a docking clamp (28).

10. The battery shell hydraulic stretching equipment according to claim 1, characterized in that: A side material box (32) is fixedly mounted on one side of the unwinding box (1), and casters are provided at the bottom of the unwinding box (1) and the side material box (32). A unwinding rod (26) is movably mounted on the inner side of the unwinding box (1), and a material feed rack (11) is fixedly mounted on the upper ends of the unwinding box (1) and the side material box (32), and a material feed roller (27) is movably mounted on the inner side of the material feed rack (11). The unwinding box (1) and the fixed base (2) as well as the side material box (32) and the fixed base (2) are slidably connected via a sliding clip (33), and a material storage box (4) is provided at one end of the fixed base (2).

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