A multi-stage stamping forming device for the chassis of a children's electric car

Abstract

A multi-stage stamping forming device for a chassis of a children's electric car relates to the technical field of metal parts stamping, including a support base and a stamping workbench. The support base and the stamping workbench are of the same size and are both horizontally arranged square tables. Two symmetrical vertical support plates are fixedly connected to the lateral ends of the support base, and the upper ends of the vertical support plates are fixedly connected to the stamping workbench. A clamping and positioning assembly is slidably provided on the support base, and a driving transfer assembly and a multi-stage stamping assembly are respectively provided on the stamping workbench. The present invention solves the problems that the stamping equipment in the traditional technology has a single stamping method that is difficult to meet the diverse stamping needs, the stamping size is poorly adjustable, the continuous stamping transfer is inconvenient, and the stamping deformation is difficult to control.

Description

Technical Field

[0001] The invention relates to the technical field of metal part stamping, and in particular to a multi-stage stamping forming device for a chassis of a children's electric car. Background Art

[0002] Toy cars are toys designed for children, usually with bright colors, rich sounds and easy operation to attract children's attention. Toy cars are not only a recreational tool for children, but also can train children's spatial thinking, logical thinking, number sense, observation, color matching, hand-eye coordination and other abilities through a series of early education games, so that they can experience the fun of driving while also exercising their reaction speed and operation skills.

[0003] There are many types of toy cars, including cars, trains, trucks, excavators, remote control cars, etc. Each vehicle has its own unique characteristics and functions. For large electric vehicles that can be driven by children, although they are much smaller than real cars in size, they also have basic components such as motors, chassis, batteries, bodies, and electrical control systems. Unlike real cars, the components of children's electric vehicles are often small in size, simpler in structure, and easy to produce. Specifically for the chassis part, similar to real cars, the chassis of children's electric vehicles also adopts a stamping manufacturing process, but unlike the complex chassis structure of real cars, the chassis of children's electric vehicles usually only contains motor slots, battery slots, and a tilting plate for installing a shock-absorbing suspension at the four-wheel assembly. Therefore, during the manufacturing process of the chassis of children's electric vehicles, a multi-stage stamping and one-time forming process of plates is often used.

[0004] The above-mentioned chassis multi-stage stamping manufacturing process needs to be carried out on professional stamping equipment. However, since children's electric vehicles have multiple parts that need to be stamped, and the specific stamping processes required for different parts are also different, the existing stamping equipment often has a series of problems during application, including:

[0005] 1. The stamping method is single and cannot meet the stamping needs of different parts. Specifically, for the stamping of different parts of children's electric vehicles, it is often necessary to adopt a variety of forming methods including stamping, drawing, and flanging. The lack of forming methods will make it difficult to achieve multi-stage stamping and one-time forming processes on one device.

[0006] 2. Poor adjustability, difficult to adapt to stamping processes of different sizes. Specifically, in the process of chassis stamping of children's electric vehicles, the same shape and different sizes are involved. For example, the motor slot and the battery slot are both grooves, but they are often different in size and even depth. In this case, the stamping method used for the two is the same, but different stamping dies are required. The frequent replacement of stamping dies will inevitably affect the continuous multi-stage stamping process.

[0007] 3. During the continuous stamping process, it is inconvenient to transfer the plates between different stations, which affects the stamping efficiency. Specifically, during the continuous multi-stage stamping process, due to the difference in stamping methods, the stamped plates often need to be transferred and switched between multiple stations, but the change in the shape of the plates caused by a single forming will increase the difficulty of the transfer operation of the stamped plates.

[0008] 4. The deformation during the stamping process is not easy to control, which affects the stamping quality. Specifically, stamping is essentially to cause the workpiece to deform by applying pressure, but during the stamping process, the deformation needs to be constrained to avoid excessive or insufficient deformation.

[0009] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0010] In view of the defects in the prior art, the present invention provides a multi-stage stamping forming device for the chassis of a children's electric car, which is used to solve the problems of the stamping equipment in the traditional technology in the process of multi-stage stamping and one-time forming of the chassis of a children's electric car, such as the single stamping method is difficult to meet the diverse stamping needs, the stamping size adjustability is poor, the continuous stamping transfer is inconvenient, and the stamping deformation is difficult to control.

[0011] To achieve the above object, the present invention provides the following technical solutions:

[0012] A multi-stage stamping forming device for the chassis of a children's electric car comprises a support base and a stamping workbench. The support base and the stamping workbench have the same size and are both horizontally arranged square tables. Two symmetrical vertical support plates are respectively fixedly connected to the lateral ends of the support base, and the upper ends of the vertical support plates are fixedly connected to the stamping workbench. A clamping and positioning assembly is slidably provided on the support base, and a driving transfer assembly and a multi-stage stamping assembly are respectively provided on the stamping workbench.

[0013] As an optimized solution, a square stamping and forming opening is opened in the middle of the upper surface of the stamping workbench, and a laterally extending displacement avoidance opening is also opened on the upper surface of the stamping workbench. The stamping and forming opening is connected to the displacement avoidance opening, and four symmetrical lifting and lowering connecting openings are opened on both sides of the stamping and forming opening.

[0014] As an optimized solution, a longitudinally extending supporting bridge plate is provided above the stamping and forming port, and two symmetrical hydraulic telescopic cylinders are respectively fixedly connected to the longitudinal sides of the stamping and forming port, and the upper telescopic ends of the hydraulic telescopic cylinders are fixedly connected to the lower surface of the supporting bridge plate.

[0015] As an optimized solution, the multi-stage stamping assembly includes a stamping outer die and a stamping inner die. The stamping outer die is fixedly connected to the center of the lower surface of the supporting bridge plate. A receiving groove is opened in the middle of the lower surface of the stamping outer die. The stamping inner die is telescopically mounted in the stamping outer die and is arranged tightly against the circumferential inner wall of the receiving groove.

[0016] As an optimized solution, a number of lifting cylinders are fixedly connected to the inner top surface of the storage groove, and the lower telescopic end of each lifting cylinder is respectively fixed to the upper end surface of the stamping inner die. The storage groove on the stamping outer die can be supplemented by driving the stamping inner die up and down by the lifting cylinder, thereby obtaining a complete upper stamping die.

[0017] As an optimized solution, a drawing outer die and a drawing inner die are respectively provided in the stamping forming port. The drawing outer die lifting card is installed in the stamping forming port and is arranged close to its circumferential inner wall, and the drawing inner die lifting card is installed in the drawing outer die and is arranged close to its circumferential inner wall.

[0018] As an optimized solution, a supplementary support plate is provided in the inner drawing die for lifting, and the outer peripheral wall of the supplementary support plate is arranged in close contact with the inner peripheral wall of the inner drawing die.

[0019] As an optimized solution, the multi-stage stamping assembly also includes a flanging die that is lifted and lowered in the lifting connecting port, and the upper surface of the support base is respectively fixed with four groups of top support telescopic cylinders corresponding to the four flanging dies, and the upper telescopic end of each group of the top support telescopic cylinders is respectively fixed to the lower surface of the flanging die.

[0020] As an optimized solution, the clamping and positioning assembly includes two symmetrically arranged double-shaft motors, and the two double-shaft motors are respectively fixed to the two longitudinal side end faces of the support base. A horizontal driving threaded rod is respectively fixed to the end of each output shaft of the double-shaft motor, and a sliding square seat is threadedly sleeved on each driving threaded rod, and the sliding square seat is arranged tightly against the longitudinal side end face of the support base.

[0021] As an optimized solution, a downward clamping arm is provided above the two longitudinally opposite sliding square seats. The downward clamping arm is a vertically arranged U-shaped arm with an open lower end. A lifting and telescopic cylinder is fixedly connected to the center of the upper surface of each sliding square seat, and the upper telescopic end of the lifting and telescopic cylinder is fixedly connected to the lower end surface of the downward clamping arm.

[0022] As an optimized solution, a positioning seat is fixedly connected to the transverse outer end face of the downward pressing clamping arm, and two symmetrical sliding limit openings are opened on the transverse side wall of the downward pressing clamping arm. The two sliding limit openings are longitudinally arranged on both sides of the positioning seat, and a lateral clamping plate is respectively clamped in each of the sliding limit openings. The two ends of the lateral clamping plate respectively pass through the sliding limit openings and extend to the outside thereof, and a horizontal clamping telescopic cylinder is respectively fixedly connected to each longitudinal outer end face of the positioning seat, and the telescopic end of the clamping telescopic cylinder is fixedly connected to the inner side wall of the lateral clamping plate near the end.

[0023] As an optimized solution, a central telescopic cylinder is provided below the supplementary pallet, the lower fixed end of the central telescopic cylinder is fixedly connected to the upper surface of the support base, and the upper telescopic end of the central telescopic cylinder is fixedly connected to the lower surface of the supplementary pallet.

[0024] As an optimized solution, a plurality of centrally symmetrical first-level telescopic cylinders are provided below the drawing inner die, the lower fixed end of the first-level telescopic cylinder is fixedly connected to the upper surface of the support base, and the upper telescopic end of the first-level telescopic cylinder is fixedly connected to the lower surface of the drawing inner die.

[0025] As an optimized solution, a plurality of centrally symmetrical secondary telescopic cylinders are provided below the drawing outer die, the lower fixed ends of the secondary telescopic cylinders are fixedly connected to the upper surface of the support base, and the upper telescopic ends of the secondary telescopic cylinders are fixedly connected to the lower surface of the drawing outer die.

[0026] As an optimized solution, the drive transfer assembly includes two conveying installation ports, which are transversely opened on the upper surface of the stamping workbench, and are arranged on both sides of the stamping forming port. A plurality of transfer conveying rollers are arranged side by side in the transverse direction in each of the conveying installation ports, and the upper end surface of each of the transfer conveying rollers is flush with the upper surface of the stamping workbench.

[0027] As an optimized solution, a transmission shaft is fixedly connected to the longitudinal side end face of each transfer conveying roller, and the transmission shaft passes through the longitudinal inner wall of the conveying mounting port and extends to the outside of the stamping workbench. A transmission wheel is fixedly connected to the end of the transmission shaft, and a transmission belt is provided between two adjacent transmission wheels.

[0028] As an optimized solution, a rotary drive motor is fixedly connected to each of the conveying installation ports on the longitudinal outer wall of the stamping workbench, and the output shaft end of the rotary drive motor passes through the side wall of the stamping workbench and is fixedly connected to the last transmission shaft.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The multi-stage stamping assembly provided in the present invention can realize continuous multi-stage stamping of chassis panels, and realize adaptive stamping forming for different parts, different shapes and different sizes through the cooperation of stamping inner die and stamping outer die, deep drawing inner die and deep drawing outer die. Specifically, by controlling the extension and contraction of the lifting cylinder and the hydraulic telescopic cylinder to change the relative position of the deep drawing inner die and the deep drawing outer die, upper stamping dies of different shapes and sizes are formed to adapt to the stamping forming of the motor slot and the battery slot; further, the supplementary support plate, the deep drawing inner die and the deep drawing outer die can be lifted and moved respectively under the drive of the central telescopic cylinder, the first telescopic cylinder and the second telescopic cylinder to change the size of the stamping notch to adapt to the stamping forming of motor slots and battery slots of different sizes; in addition, by driving the flanging die upward through the supporting telescopic cylinder, the flanging die can be supported and flanging can be performed on the cutting plate on the side of the chassis.

[0031] The clamping and positioning assembly provided in the present invention can not only realize the pushing, transfer and alignment of the stamping plate, but also can press down and clamp the relevant positions of the plate by pressing down the clamping arm in multiple different stamping processes. On the one hand, it can prevent the plate from displacement during the stamping process and avoid stamping deviation. On the other hand, it can also constrain the deformation of the stamping part and improve the stamping quality. Furthermore, the clamping and positioning assembly can also clamp and lift the chassis that has completed stamping as a whole, so that the deformed part of the plate can be separated from the stamping workbench, which is convenient for subsequent transportation and transfer.

[0032] The driving transfer assembly provided in the present invention can realize the continuous transfer of the stamping plate parts between multiple stamping stations by driving the transfer conveying roller to rotate, thereby greatly improving the stamping processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0034] Figure 1 It is a schematic cross-sectional view of the internal structure of each component in the present invention in a top view direction;

[0035] Figure 2It is a schematic cross-sectional view of the internal structure of each component in the present invention in the main viewing direction;

[0036] Figure 3 It is a schematic cross-sectional view of the internal structure of the multi-stage stamping assembly in the present invention in the side view direction;

[0037] Figure 4 It is a side view schematic diagram of each component in the flanging forming process of the present invention;

[0038] Figure 5 It is a schematic cross-sectional view of the internal structure of the clamping and positioning assembly and the driving and transferring assembly in the present invention in the side view direction;

[0039] Figure 6 It is a schematic cross-sectional view of the internal structure of the present invention in the main viewing direction;

[0040] Figure 7 It is a schematic cross-sectional view of the internal structure of the present invention in a top view direction.

[0041] In the figure: 1-support base, 2-stamping workbench, 3-vertical support plate, 4-double-output shaft motor, 5-driving threaded rod, 6-sliding square seat, 7-pressing clamping arm, 8-lifting telescopic cylinder, 9-positioning seat, 10-sliding limit port, 11-lateral clamping plate, 12-clamping telescopic cylinder, 13-stamping forming port, 14-displacement avoidance port, 15-lifting connecting port, 16-support bridge plate, 17-hydraulic telescopic cylinder, 18- Stamping outer die, 19-stamping inner die, 20-storage groove, 21-lifting cylinder, 22-drawing outer die, 23-drawing inner die, 24-supplementary pallet, 25-center telescopic cylinder, 26-first-stage telescopic cylinder, 27-second-stage telescopic cylinder, 28-flanging die, 29-top support telescopic cylinder, 30-conveying installation port, 31-transfer conveying roller, 32-transmission shaft, 33-transmission wheel, 34-transmission belt, 35-rotation drive motor. DETAILED DESCRIPTION

[0042] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0043] like Figures 1 to 7 As shown, a multi-stage stamping forming device for the chassis of a children's electric car includes a support base 1 and a stamping workbench 2. The support base 1 and the stamping workbench 2 have the same size and are both horizontally arranged square tables. Two symmetrical vertical support plates 3 are fixedly connected to the lateral ends of the support base 1, and the upper ends of the vertical support plates 3 are fixedly connected to the stamping workbench 2. A clamping and positioning assembly is slidably provided on the support base 1, and a driving transfer assembly and a multi-stage stamping assembly are respectively provided on the stamping workbench 2.

[0044] The clamping and positioning assembly includes two symmetrically arranged double-shaft motors 4, which are respectively fixed to the two longitudinal side end surfaces of the support base 1. A horizontal driving threaded rod 5 is respectively fixed to the end of each output shaft of the double-shaft motor 4, and a sliding square seat 6 is respectively threadedly sleeved on each driving threaded rod 5. The sliding square seat 6 is arranged close to the longitudinal side end surface of the support base 1.

[0045] A downward pressing clamping arm 7 is provided above the two longitudinally opposite sliding square seats 6. The downward pressing clamping arm 7 is a U-shaped arm which is vertically arranged and open at the lower end. A lifting and telescopic cylinder 8 is fixedly connected to the center of the upper surface of each sliding square seat 6, and the upper telescopic end of the lifting and telescopic cylinder 8 is fixedly connected to the lower end surface of the downward pressing clamping arm 7.

[0046] A positioning seat 9 is fixedly connected to the transverse outer end face of the pressing clamping arm 7, and two symmetrical sliding limit openings 10 are opened on the transverse side wall of the pressing clamping arm 7. The two sliding limit openings 10 are longitudinally arranged on both sides of the positioning seat 9, and a lateral clamping plate 11 is respectively clamped in each sliding limit opening 10. The two ends of the lateral clamping plate 11 respectively pass through the sliding limit opening 10 and extend to the outside thereof. A horizontal clamping telescopic cylinder 12 is respectively fixedly connected to each longitudinal outer end face of the positioning seat 9, and the telescopic end of the clamping telescopic cylinder 12 is fixed to the inner wall of the lateral clamping plate 11 near the end.

[0047] A square stamping opening 13 is provided in the middle of the upper surface of the stamping workbench 2. A laterally extending displacement avoidance opening 14 is also provided on the upper surface of the stamping workbench 2. The stamping opening 13 is connected to the displacement avoidance opening 14. Four lifting connecting openings 15 symmetrically arranged in pairs are provided on both sides of the stamping opening 13.

[0048] A longitudinally extending supporting bridge plate 16 is provided above the stamping and forming opening 13 , and two symmetrical hydraulic telescopic cylinders 17 are fixedly connected to the longitudinal sides of the stamping and forming opening 13 , respectively. The upper telescopic ends of the hydraulic telescopic cylinders 17 are fixedly connected to the lower surface of the supporting bridge plate 16 .

[0049] The multi-stage stamping assembly includes a stamping outer die 18 and a stamping inner die 19. The stamping outer die 18 is fixedly connected to the center of the lower surface of the supporting bridge plate 16. A receiving groove 20 is opened in the middle of the lower surface of the stamping outer die 18. The stamping inner die 19 is telescopically clamped in the stamping outer die 18 and is arranged close to the circumferential inner wall of the receiving groove 20.

[0050] A number of lifting cylinders 21 are fixedly connected to the inner top surface of the storage groove 20. The lower telescopic end of each lifting cylinder 21 is respectively fixedly connected to the upper end surface of the stamping inner die 19. The lifting cylinders 21 drive the stamping inner die 19 to move up and down to supplement the storage groove 20 on the stamping outer die 18, thereby obtaining a complete upper stamping die.

[0051] The punching opening 13 is provided with an outer drawing die 22 and an inner drawing die 23. The outer drawing die 22 is lifted and mounted in the punching opening 13 and is arranged close to the circumferential inner wall thereof. The inner drawing die 23 is lifted and mounted in the outer drawing die 22 and is arranged close to the circumferential inner wall thereof.

[0052] A supplementary support plate 24 is provided in the inner drawing die 23 so as to be lifted and lowered, and the outer peripheral wall of the supplementary support plate 24 is arranged in close contact with the inner peripheral wall of the inner drawing die 23 .

[0053] A central telescopic cylinder 25 is provided below the supplementary support plate 24 , the lower fixed end of the central telescopic cylinder 25 is fixedly connected to the upper surface of the support base 1 , and the upper telescopic end of the central telescopic cylinder 25 is fixedly connected to the lower surface of the supplementary support plate 24 .

[0054] A plurality of centrally symmetrical first-stage telescopic cylinders 26 are provided below the inner drawing die 23 . The lower fixed end of the first-stage telescopic cylinder 26 is fixedly connected to the upper surface of the support base 1 , and the upper telescopic end of the first-stage telescopic cylinder 26 is fixedly connected to the lower surface of the inner drawing die 23 .

[0055] A plurality of centrally symmetrical secondary telescopic cylinders 27 are provided below the outer drawing die 22 . The lower fixed ends of the secondary telescopic cylinders 27 are fixedly connected to the upper surface of the support base 1 , and the upper telescopic ends of the secondary telescopic cylinders 27 are fixedly connected to the lower surface of the outer drawing die 22 .

[0056] The multi-stage stamping assembly also includes a flanging die 28 that is lifted and lowered in the lifting connecting port 15. Four groups of top support telescopic cylinders 29 are respectively fixedly connected to the upper surface of the support base 1 corresponding to the four flanging dies 28. The upper telescopic end of each group of top support telescopic cylinders 29 is respectively fixedly connected to the lower surface of the flanging die 28.

[0057] The drive transfer assembly includes two conveying installation openings 30, which are transversely opened on the upper surface of the stamping workbench 2. The two conveying installation openings 30 are arranged on both sides of the stamping forming opening 13. A plurality of transfer conveying rollers 31 are arranged side by side in the transverse direction in each conveying installation opening 30, and the upper end surface of each transfer conveying roller 31 is flush with the upper surface of the stamping workbench 2.

[0058] A transmission shaft 32 is fixedly connected to the longitudinal side end face of each transfer conveying roller 31. The transmission shaft 32 passes through the longitudinal inner wall of the conveying installation opening 30 and extends to the outside of the stamping workbench 2. A transmission wheel 33 is fixedly connected to the end of the transmission shaft 32, and a transmission belt 34 is sleeved between two adjacent transmission wheels 33.

[0059] A rotary drive motor 35 is fixedly connected to each conveying installation opening 30 on the longitudinal outer wall of the stamping workbench 2 , and the end of the output shaft of the rotary drive motor 35 passes through the side wall of the stamping workbench 2 and is fixedly connected to the end transmission shaft 32 .

[0060] When the present invention is in use: first, place the sheet that has completed the cutting pretreatment flat on one side of the upper surface of the stamping workbench 2, and start the two double-output shaft motors 4 respectively. The double-output shaft motor 4 drives the driving threaded rod 5 to rotate, and drives the sliding square seat 6 to slide horizontally. At the same time, the lifting and telescopic cylinder 8 is controlled to shorten, so that the pressing clamping arm 7 is close to the upper surface of the stamping workbench 2. The two pressing clamping arms 7 move towards each other, and the stamping sheet is pushed to the stamping station from both sides. During the horizontal pushing and transferring process, the side clamping plate 11 is driven to move by controlling the extension and contraction of the clamping telescopic cylinder 12, and the stamping sheet is side clamped and positioned to prevent the sheet from shifting during the horizontal pushing process; start the rotating drive motor 35, and the rotating drive motor 35 drives the transfer conveying roller 31 at the initial end to rotate, and then Through the transmission of the transmission wheel 33 and the transmission belt 34, each transfer conveying roller 31 rotates in sequence to provide a driving force for the movement of the plate; the chassis motor slot stamping process is first performed, specifically: the plate is moved to the motor slot stamping position by rotating the transfer conveying roller 31, the lifting and telescopic cylinder 8 is controlled to extend, and the two downward clamping arms 7 are driven to move to the two ends above the plate, and then the lifting and telescopic cylinder 8 is controlled to shorten, and the downward clamping arm 7 is used to clamp the plate to prevent the plate from moving during the stamping process, and the first-level telescopic cylinder 26 and the second-level telescopic cylinder 27 are controlled to extend respectively, and the inner drawing die 23 and the outer drawing die 22 are driven to move up to a position flush with the stamping workbench 2, and the central telescopic cylinder 25 is controlled to extend, and the supplementary support plate 24 is used to limit the punching To achieve the desired stamping depth, the lifting cylinder 21 is started. The lifting cylinder 21 pushes out the stamping inner die 19, and then the hydraulic telescopic cylinder 17 is controlled to shorten, driving the supporting bridge plate 16 to descend as a whole. The stamping inner die 19 and the drawing inner die 23 are used to cooperate to realize the stamping of the motor slot. During the stamping process of the motor slot, the stamping outer die 18 can press the stamping transition part of the plate to prevent deformation. After the stamping of the motor slot is completed, the first-level telescopic cylinder 26 and the second-level telescopic cylinder 27 are controlled to shorten, and the hydraulic telescopic cylinder 17 is extended to demould. The pressing clamping arm 7 is used again to push the stamping plate to move horizontally, so that the stamped part is transferred from the stamping forming port 13 to the displacement avoidance port 14, and the battery slot is stamped. Specifically: the lifting cylinder 21 is shortened to make the stamping inner die 19 and the drawing inner die 23 cooperate to realize the stamping of the motor slot. During the stamping process of the motor slot, the stamping outer die 18 can press the stamping transition part of the plate to prevent deformation. After the stamping of the motor slot is completed, the first-level telescopic cylinder 26 and the second-level telescopic cylinder 27 are controlled to shorten, and the hydraulic telescopic cylinder 17 is extended to demould. The stamping plate is pushed to move horizontally by the pressing clamping arm 7 again, so that the stamped part is transferred from the stamping forming port 13 to the displacement avoidance port 14, and the battery slot is stamped. 19 is retracted to accommodate the groove 20, and the lower end of the stamping inner die 19 is kept horizontal with the lower end of the stamping outer die 18, so as to obtain a complete upper stamping die, and the first-level telescopic cylinder 26 is controlled to shorten and the central telescopic cylinder 25 is extended, and the deep drawing inner die 23 is driven to move down to a position where the upper end is flush with the lower surface of the deep drawing outer die 22, and the deep drawing inner die 23 is supplemented by the supplementary support plate 24, and the hydraulic telescopic cylinder 17 is controlled to shorten, and the upper stamping die is pressed down to perform a second battery slot stamping process on the plate; after the battery slot is stamped and formed, the top support telescopic cylinder 29 is controlled to extend, and the cutting plate at the four-wheel installation of the chassis is flanged by the flanging die 28. During the flanging process, the downward clamping arm 7 is controlled to move to the top of the flanging die 28 to limit the flanging deformation;After the multi-stage stamping is completed, each component is driven to reset, and the chassis of the children's toy car is clamped and lifted from both sides by the clamping and positioning components to separate it from the stamping workbench 2, and then the chassis is transferred to the transfer conveying roller 31 for secondary transfer by driving the clamping and positioning components as a whole to move horizontally, and finally the stamped chassis is taken out as a whole. ;

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A multi-stage stamping forming device for the chassis of a children's electric car, characterized in that: The invention comprises a support base (1) and a stamping workbench (2), wherein the support base (1) and the stamping workbench (2) have the same size and are both horizontally arranged square tables, two symmetrical vertical support plates (3) are respectively fixedly connected to the two lateral ends of the support base (1), and the upper ends of the vertical support plates (3) are fixedly connected to the stamping workbench (2), a clamping and positioning component is slidably provided on the support base (1), and a driving transfer component and a multi-stage stamping component are respectively provided on the stamping workbench (2); A square punching and forming opening (13) is provided in the middle of the upper surface of the punching workbench (2); a laterally extending displacement avoidance opening (14) is also provided on the upper surface of the punching workbench (2); the punching and forming opening (13) is connected to the displacement avoidance opening (14); and four lifting and lowering connecting openings (15) are provided on both sides of the punching and forming opening (13) and are symmetrical in pairs; A longitudinally extending support bridge plate (16) is provided above the punching and forming opening (13) for lifting, and two symmetrical hydraulic telescopic cylinders (17) are respectively fixedly connected to the longitudinal sides of the punching and forming opening (13), and the upper telescopic ends of the hydraulic telescopic cylinders (17) are fixedly connected to the lower surface of the support bridge plate (16); The multi-stage stamping assembly comprises a stamping outer die (18) and a stamping inner die (19); the stamping outer die (18) is fixedly connected to the center of the lower surface of the supporting bridge plate (16); a receiving groove (20) is provided in the middle of the lower surface of the stamping outer die (18); the stamping inner die (19) is telescopically mounted in the stamping outer die (18) and is arranged closely to the circumferential inner wall of the receiving groove (20); A plurality of lifting cylinders (21) are fixedly connected to the inner top surface of the receiving groove (20), and the lower telescopic end of each lifting cylinder (21) is respectively fixedly connected to the upper end surface of the punching inner die (19). The lifting cylinder (21) drives the punching inner die (19) to move up and down to supplement the receiving groove (20) on the punching outer die (18), thereby obtaining a complete upper punching die; A deep drawing outer die (22) and a deep drawing inner die (23) are respectively arranged in the stamping and forming opening (13); the deep drawing outer die (22) is lifted and clamped in the stamping and forming opening (13) and is arranged closely to the circumferential inner wall thereof; the deep drawing inner die (23) is lifted and clamped in the deep drawing outer die (22) and is arranged closely to the circumferential inner wall thereof; A supplementary support plate (24) is provided in the inner drawing die (23) so as to be lifted and lowered, and an outer peripheral wall of the supplementary support plate (24) is arranged in close contact with an inner peripheral wall of the inner drawing die (23); The multi-stage stamping assembly also includes a flanging die (28) that is lifted and arranged in the lifting connecting port (15); the upper surface of the support base (1) is respectively fixedly connected with four groups of top support telescopic cylinders (29) corresponding to the four flanging dies (28); the upper telescopic end of each group of the top support telescopic cylinders (29) is respectively fixedly connected to the lower surface of the flanging die (28); The clamping and positioning assembly comprises two symmetrically arranged double-shaft motors (4), the two double-shaft motors (4) being fixedly connected to two longitudinal side end surfaces of the support base (1), and each output shaft end of the double-shaft motor (4) being fixedly connected to a horizontal driving threaded rod (5), and each driving threaded rod (5) being threadedly sleeved with a sliding square seat (6), and the sliding square seat (6) being arranged closely against the longitudinal side end surface of the support base (1); A downward pressing clamping arm (7) is provided on the upper part of the two longitudinally opposite sliding square seats (6), and the downward pressing clamping arm (7) is a U-shaped arm arranged vertically and open at the lower end. A lifting and telescopic cylinder (8) is fixedly connected at the center of the upper surface of each sliding square seat (6), and the upper telescopic end of the lifting and telescopic cylinder (8) is fixedly connected to the lower end surface of the downward pressing clamping arm (7); A positioning seat (9) is fixedly connected to the transverse outer end surface of the downward pressing clamping arm (7), and two symmetrical sliding limit openings (10) are provided on the transverse side wall of the downward pressing clamping arm (7). The two sliding limit openings (10) are longitudinally arranged on both sides of the positioning seat (9), and a lateral clamping plate (11) is respectively clamped in each of the sliding limit openings (10). The two ends of the lateral clamping plate (11) respectively pass through the sliding limit opening (10) and extend to the outside thereof. A horizontal clamping telescopic cylinder (12) is fixedly connected to each longitudinal outer end surface of the positioning seat (9), and the telescopic end of the clamping telescopic cylinder (12) is fixedly connected to the inner wall of the lateral clamping plate (11) near the end.

2. A multi-stage stamping forming device for a chassis of a children's electric vehicle according to claim 1, characterized in that: A central telescopic cylinder (25) is provided below the supplementary support plate (24); a lower fixed end of the central telescopic cylinder (25) is fixedly connected to the upper surface of the support base (1); and an upper telescopic end of the central telescopic cylinder (25) is fixedly connected to the lower surface of the supplementary support plate (24).

3. The multi-stage stamping forming device for the chassis of a children's electric vehicle according to claim 1, characterized in that: A plurality of centrally symmetrical first-stage telescopic cylinders (26) are provided below the inner drawing die (23); the lower fixed ends of the first-stage telescopic cylinders (26) are fixedly connected to the upper surface of the support base (1); and the upper telescopic ends of the first-stage telescopic cylinders (26) are fixedly connected to the lower surface of the inner drawing die (23).

4. The multi-stage stamping forming device for the chassis of a children's electric vehicle according to claim 1, characterized in that: A plurality of centrally symmetrical secondary telescopic cylinders (27) are provided below the drawing outer die (22); the lower fixed ends of the secondary telescopic cylinders (27) are fixedly connected to the upper surface of the support base (1); and the upper telescopic ends of the secondary telescopic cylinders (27) are fixedly connected to the lower surface of the drawing outer die (22).

5. The multi-stage stamping forming device for the chassis of a children's electric vehicle according to claim 1, characterized in that: The drive transfer assembly comprises two conveying installation openings (30), the two conveying installation openings (30) are transversely opened on the upper surface of the stamping workbench (2), the two conveying installation openings (30) are respectively arranged on both sides of the stamping forming opening (13), and a plurality of transfer conveying rollers (31) are respectively arranged in parallel in the transverse direction in each of the conveying installation openings (30), and the upper end surface of each of the transfer conveying rollers (31) is respectively flush with the upper surface of the stamping workbench (2).

6. A multi-stage stamping forming device for a chassis of a children's electric vehicle according to claim 5, characterized in that: A transmission shaft (32) is fixedly connected to the longitudinal side end surface of each transfer conveying roller (31), the transmission shaft (32) passes through the longitudinal inner wall of the conveying installation opening (30) and extends to the outside of the stamping workbench (2), the end of the transmission shaft (32) is fixedly connected to a transmission wheel (33), and a transmission belt (34) is sleeved between two adjacent transmission wheels (33).

7. A multi-stage stamping forming device for a chassis of a children's electric vehicle according to claim 6, characterized in that: A rotary drive motor (35) is fixedly connected to each of the conveying installation openings (30) on the longitudinal outer wall of the punching workbench (2), and the output shaft end of the rotary drive motor (35) passes through the side wall of the punching workbench (2) and is fixedly connected to the last transmission shaft (32).

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