A stamping device and method for automobile metal workpieces with automatic cross-section rust prevention

Abstract

The present invention relates to the technical field of metal stamping equipment, and discloses a stamping device and method for an automobile metal workpiece with automatic rust prevention treatment of a cross-section, comprising a double-axis punch press, wherein the double-axis punch press is used to continuously stamp metal plates to form metal workpieces for new energy vehicles, wherein the double-axis punch press is provided with a lifting and lowering pressing plate, and the double-axis punch press is also provided with a base; a support box is provided at the side end of the double-axis punch press, wherein rust prevention liquid is provided in the support box, and two groups of support tubes are symmetrically provided in the support box, and contact tubes are rotatably provided on the outer walls of the support tubes, and the metal plate contacts the two groups of contact tubes, and a guide assembly is provided in the support tube, and a transmission frame is provided on the two groups of the guide assemblies; the beneficial effect of the present invention is that by integrating the support box at the side end of the double-axis punch press, and providing a contact tube that is in dynamic contact with the cross-section of the metal plate, and combining the guide assembly driven by the lifting and lowering of the pressing plate, real-time and automatic rust prevention treatment of the cross-section of the metal plate is achieved during the stamping and feeding process.

Description

Technical Field

[0001] The invention relates to the technical field of metal stamping equipment, in particular to a stamping device and method for an automobile metal workpiece with automatic cross-section rust prevention treatment. Background Art

[0002] In the production process of metal workpieces for new energy vehicles, such as special-shaped battery pack shells, automatic clamping springs for electric vehicle cooling pipes, corrugated cards for automobile air compressor control valve plates, intake and exhaust valve plates, wipers and other metal workpieces, they are generally made of iron plates through stamping. The stamping process will produce processing edges on their surfaces. At the same time, the storage and processing of iron are carried out in the air, and the metal surface will also stick to moisture in the air, and the iron will rust. In order to ensure that the product does not rust, the commonly used method is to electroplate the processed products, and electroplating of the products will increase the cost of the products.

[0003] In order to keep up with product demand, anti-rust oil must be added to the cross-section to reduce the time it takes for the product to rust. Previously, operators would brush the end surface of the material with oil once in a while. Due to manual operation, there would be certain errors, and the punched products would often rust after a period of time due to missed brushing. In view of this, the present invention proposes an automotive metal workpiece stamping device and method for automatic cross-section rust prevention treatment to solve the above problem. Summary of the Invention

[0004] The object of the present invention is to provide a stamping device and method for automobile metal workpieces with automatic cross-section rust prevention treatment to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A stamping device for automobile metal workpieces with automatic cross-section rust prevention treatment includes a biaxial punch press, which is used to continuously punch metal plates to form metal workpieces for new energy vehicles. The biaxial punch press is provided with a lifting and lowering pressing plate and a base.

[0007] A support box is provided at the side end of the double-axis punch press, and anti-rust liquid is provided in the support box. Two groups of support tubes are symmetrically provided in the support box, and contact tubes are rotatably provided on the outer walls of the support tubes. The metal plate contacts the two groups of contact tubes. A guide assembly is provided in the support tube, and a transmission frame is provided on the two groups of guide assemblies. The transmission frame cooperates with the pressure plate to make the guide assembly move in the support tube, guiding the anti-rust liquid into the inner cavity of the support tube, flowing out from the top of the support tube and wrapping around the outer wall of the contact tube.

[0008] As an improvement to the above technical solution, a support shell is provided in the support box, the support shell is provided with a T-shaped guide groove, a support rod is rotatably provided in the support shell, and the support rod is provided with two sets of threaded outer walls with opposite thread directions;

[0009] A T-shaped block is provided at the bottom end of the support tube, and the T-shaped block is slidably arranged in the T-shaped guide groove. The T-shaped block is provided with threaded holes, and the two groups of threaded holes are respectively matched with the two groups of threaded outer walls;

[0010] The support box is provided with a guiding inclined surface, and the support box is provided with a connecting plate, and the connecting plate is connected to the side wall of the double-axis punch press by bolts;

[0011] An extension rod is provided on the outer wall of the support box, a rotating hand wheel is provided on the extension rod, and the extension rod is transmission-connected with the support rod.

[0012] As an improvement to the above technical solution, two groups of limiting circular plates are symmetrically provided on the outer wall of the support tube, and the contact tube is rotatably provided between the two groups of limiting circular plates;

[0013] The support tube is provided with multiple groups of liquid outlet grooves, which are arranged in a ring array. The support tube is provided with two groups of elastic liquid inlet pipes, the liquid outlet grooves are arranged at the top end of the support tube, and the elastic liquid inlet pipes are arranged at the bottom end of the support tube.

[0014] As an improvement to the above technical solution, the support tube is provided with a top plate;

[0015] The guide assembly includes a guide rod connected to the transmission frame, the guide rod is slidably arranged on the top plate, the bottom end of the guide rod is provided with a sealing plug, and the sealing plug is slidably arranged in the inner cavity of the support tube.

[0016] As an improvement to the above technical solution, the sealing plug is provided with a liquid outlet pipe;

[0017] The elastic liquid inlet pipe is provided with a liquid inlet one-way valve, and the liquid inlet one-way valve is used to prevent the anti-rust oil from flowing from the support pipe into the elastic liquid inlet pipe;

[0018] The liquid outlet pipe is provided with a liquid outlet one-way valve, and the liquid outlet one-way valve is used to prevent air from entering the liquid outlet pipe.

[0019] As an improvement to the above technical solution, a filter housing is provided at the upper pipe opening of the elastic liquid inlet pipe, and a plurality of filter holes are provided on the surface of the filter housing;

[0020] The outer wall of the guide rod is sleeved with a disturbance circular plate, and the disturbance circular plate is slidably arranged in the inner cavity of the support tube;

[0021] Two groups of first fixing plates are symmetrically arranged on the disturbance circular plate, a second fixing plate is arranged on the first fixing plate, fixing holes are opened on the second fixing plate, and the two groups of elastic liquid inlet pipes are respectively arranged in the two groups of fixing holes.

[0022] As an improvement to the above technical solution, a spring is provided on the disturbance circular plate, the spring is sleeved on the outer wall of the guide rod, and the spring is provided between the disturbance circular plate and the top plate;

[0023] A disturbance plate is provided at the bottom end of the second fixed plate;

[0024] The second fixing plate is further provided with a contact plate, which contacts the surface of the contact tube.

[0025] As an improvement of the above technical solution, the double-axis punch press is provided with two sets of transmission holes;

[0026] The transmission frame includes a first transmission plate, which is connected to two groups of guide rods, two groups of second transmission plates are provided at both ends of the first transmission plate, a third transmission plate is provided between the two groups of second transmission plates, the two groups of second transmission plates are respectively provided in two groups of transmission holes, and the third transmission plate is connected to the pressure plate.

[0027] A method for using a stamping device for an automobile metal workpiece with automatic cross-section rust prevention treatment, comprising the following steps:

[0028] S1. Dynamic spacing adjustment:

[0029] The rotating hand wheel drives the support rod to rotate through the extension rod, and uses its two sets of oppositely threaded outer walls to synchronously adjust the distance between the two sets of support tubes so that the contact tubes contact the sections on both sides of the metal plate;

[0030] S2, anti-rust liquid self-circulation start:

[0031] The double-axis punch press is started, and the pressing plate is raised and lowered, driving the guide rod to reciprocate through the transmission frame, causing the sealing plug to pump the rust-proof liquid into the inner cavity of the support tube. When the sealing plug is raised, the liquid inlet check valve opens, and the rust-proof liquid is sucked into the inner cavity of the support tube through the elastic liquid inlet pipe. When the sealing plug is pressed down, the liquid outlet check valve opens, and the rust-proof liquid enters the top of the sealing plug through the liquid outlet pipe. When the sealing plug is raised next time, it is driven by the sealing plug to seep out from the liquid outlet groove to the surface of the contact tube.

[0032] S3, Spin coating and self-cleaning:

[0033] The metal plates are continuously fed into the double-axis punch press, where their cross sections rub against the rotating contact tube, allowing the anti-rust liquid to evenly coat the cross sections. Simultaneously, the movement of the guide rod drives the disturbance circular plate to vibrate, which is then transmitted to the fixed hole, shaking off impurities on the surface of the filter housing on the elastic liquid inlet pipe.

[0034] S4, stamping synergistic anti-rust treatment:

[0035] The metal sheet that has been treated with anti-rust treatment is punched into shape in a biaxial punch press. The cross-section anti-rust film provides lubrication during the punching process, reduces material flow resistance and inhibits oxidation after punching.

[0036] As an improvement of the above technical solution, in step S1, the support tube is adjusted in spacing by sliding the bottom T-block along the T-shaped guide groove, and during the adjustment process, the elastic liquid inlet pipe maintains communication with the support box through deformation.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] By integrating a support box at the side of the dual-axis punch press and providing a contact tube that dynamically contacts the metal plate cross-section, combined with a guide assembly that drives the platen's lift, real-time, automatic rust prevention of the metal plate cross-section is achieved during the punching and feeding process. The rust-proofing liquid is actively transported to the contact tube surface through the guide assembly inside the support tube, continuously coating the metal plate cross-section as it moves. This solves the problem of exposed and oxidized cross-sections requiring additional processing steps in traditional processes.

[0039] The lifting motion of the dual-axis punch press's platen is linked to the transmission frame guide assembly, converting mechanical energy into the delivery power of the anti-rust liquid. No additional energy is required to drive the liquid supply system. This design significantly reduces energy consumption and ensures the recycling of the anti-rust liquid. It achieves online automated protection of metal sections in a low-cost, low-energy manner, effectively improving product quality and production efficiency while reducing equipment footprint and maintenance requirements.

[0040] The metal section is immediately wrapped with anti-rust liquid before stamping to form a protective film that isolates oxygen, effectively preventing metal atoms from reacting with oxygen to form a hard oxide layer, thus preventing the oxide layer from causing micro cracks during the stamping process. The flexible protective film formed by the anti-rust liquid maintains the active state of the metal section, improving the ductility of the material during stamping deformation, and avoiding stamping cracking defects caused by surface hardening.

[0041] The lubricating film formed by the rust-proof liquid on the metal cross-section can reduce the dynamic friction coefficient between the stamping die and the material, thereby reducing the material flow resistance during the stamping process and avoiding rebound deformation caused by local stress concentration. At the same time, it can make the metal plate fill the mold cavity more evenly, thereby improving the dimensional tolerance qualification rate of key parts (such as hinge holes and mounting slots) of metal workpieces such as battery pack special-shaped shells, automatic clamping springs for electric vehicle cooling pipes, corrugated cards for automobile air compressor control valve plates, intake and exhaust valve plates, wipers, etc.

[0042] By frictionally contacting and clamping the cross-sections of the metal plate during rotation, the contact tube can form a dynamic guide limit. When the metal plate is continuously fed into the stamping area, the rotational friction force and lateral pressure of the contact tube constrain the lateral deviation of the metal plate, preventing it from swinging during transportation and ensuring that it accurately enters the center position of the stamping die. Moreover, the clamping force of the two sets of contact tubes works in coordination with the direction of travel of the metal plate, eliminating the need for additional guide rollers or positioning fixtures, thereby simplifying the equipment structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the structure of the present invention;

[0044] Figure 2 It is a structural schematic diagram of the transmission frame of the present invention;

[0045] Figure 3 It is a structural schematic diagram of the support box of the present invention;

[0046] Figure 4 Schematic diagram of the structure of the contact roller of the present invention;

[0047] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure at A in the middle;

[0048] Figure 6 For the present invention Figure 4 Schematic diagram of the enlarged structure at B in the middle;

[0049] Figure 7 Schematic diagram of the structure of the support tube of the present invention;

[0050] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at C in the middle;

[0051] Figure 9 It is a structural schematic diagram of the guide assembly of the present invention;

[0052] Figure 10 Schematic diagram of the structure of the sealing plug of the present invention;

[0053] Figure 11 is a schematic structural diagram of the second fixing plate of the present invention;

[0054] Figure 12 For the present invention Figure 11 Schematic diagram of the enlarged structure at D in FIG;

[0055] Figure 13 This is a schematic structural diagram of the support box of the present invention from another angle;

[0056] Figure 14 For the present invention Figure 13 Schematic diagram of the enlarged structure at E in the middle;

[0057] Figure 15 A front view of the contact roller of the present invention;

[0058] Figure 16 For the present invention Figure 15 Cross-sectional view of FF in.

[0059] Figure: 10, double-axis punch press; 11, pressing plate; 12, base; 13, transmission hole; 20, transmission frame; 21, first transmission plate; 22, second transmission plate; 23, third transmission plate; 30, metal plate; 40, support box; 41, support shell; 42, T-shaped guide groove; 43, guide slope; 44, connecting plate; 45, support rod; 46, threaded outer wall; 47, extension rod; 48, rotating handwheel; 50, support tube; 51, contact tube; 52, top Plate; 53, liquid outlet groove; 54, disturbance circular plate; 541, first fixed plate; 542, second fixed plate; 543, spring; 544, disturbance plate; 545, fixing hole; 546, contact plate; 55, elastic liquid inlet pipe; 551, filter housing; 552, liquid inlet one-way valve; 56, limit circular plate; 57, T-block; 571, threaded hole; 60, guide assembly; 61, guide rod; 62, sealing plug; 63, liquid outlet pipe; 64, liquid outlet one-way valve. DETAILED DESCRIPTION

[0060] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0061] Example:

[0062] like Figure 1-16 As shown, this embodiment provides a stamping device for an automobile metal workpiece with automatic cross-section rust prevention treatment, comprising a biaxial punching machine 10, which is used to continuously punch a metal plate 30 to form a new energy automobile metal workpiece. The biaxial punching machine 10 is provided with a lifting and lowering pressing plate 11, and the biaxial punching machine 10 is also provided with a base 12;

[0063] A support box 40 is provided at the side end of the biaxial punch press 10, in which anti-rust liquid is provided. Two groups of support tubes 50 are symmetrically provided in the support box 40, and contact tubes 51 are rotatably provided on the outer wall of the support tube 50. The metal plate 30 contacts the two groups of contact tubes 51. A guide assembly 60 is provided in the support tube 50, and a transmission frame 20 is provided on the two groups of guide assemblies 60. The transmission frame 20 cooperates with the pressing plate 11 to make the guide assembly 60 move in the support tube 50, guiding the anti-rust liquid into the inner cavity of the support tube 50 and flowing out from the top of the support tube 50 to wrap around the outer wall of the contact tube 51.

[0064] In this case, metal workpieces include but are not limited to special-shaped battery pack shells, automatic clamping springs for electric vehicle cooling pipes, corrugated cards for automobile air compressor control valve plates, intake and exhaust valve plates, and wipers.

[0065] In this embodiment, when stamping the metal plate 30, a top stamping die is installed on the pressing plate 11, a bottom stamping die is installed on the base 12, and the metal plate 30 is placed on the bottom stamping die. Then, the top stamping die and the bottom stamping die cooperate to stamp the metal plate 30, so that the metal plate 30 is formed into the shape of an automobile metal workpiece after stamping.

[0066] Of course, during the stamping process, the metal plate 30 is fed into the biaxial punch press 10 by a feeding mechanism, which includes but is not limited to a robotic arm that clamps the metal plate 30 and drives the metal plate 30 to move;

[0067] Of course, during the stamping process, since the metal plate 30 can be continuously displaced and is disposed between the two sets of contact tubes 51, the end sections of the metal plate 30 on both sides are in continuous contact with the two sets of contact tubes 51. At the same time, since the pressing plate 11 is continuously lifted and lowered during the stamping process, the transmission frame 20 is continuously lifted and lowered, causing the guide assembly 60 to move in the support tube 50, guiding the rust-proof liquid into the inner cavity of the support tube 50 and outflowing from the top of the support tube 50 to wrap around the outer wall of the contact tube 51. This allows the rust-proof liquid to continuously contact the end sections of the metal plate 30 on both sides and wrap around the sections on both sides of the metal plate 30 before being fed into the double-axis punch press 10 for the stamping process.

[0068] By integrating a support box 40 at the side of the dual-axis punch press 10 and providing a contact tube 51 that dynamically contacts the cross-section of the metal plate 30, combined with a guide assembly 60 that drives the platen 11 up and down, real-time, automatic rust prevention treatment of the cross-section of the metal plate 30 is achieved during the punching and feeding process. The rust-proofing liquid is actively transported to the surface of the contact tube 51 through the guide assembly 60 within the support tube 50, continuously coating the cross-section of the metal plate 30 as it moves. This solves the problem of exposed and oxidized cross-sections requiring additional processing steps in traditional processes.

[0069] The lifting motion of the pressure plate 11 of the dual-axis punch press 10 is linked to the guide assembly 60 through the transmission frame 20, converting mechanical energy into the power to deliver the anti-rust liquid. No additional energy is required to drive the liquid supply system. This design significantly reduces energy consumption and ensures the recycling of the anti-rust liquid. It achieves online automated protection of metal sections in a low-cost and low-energy manner, effectively improving product quality and production efficiency while reducing equipment footprint and maintenance requirements.

[0070] The cross section of the metal plate 30 is immediately wrapped with the anti-rust liquid before stamping, forming a protective film that isolates oxygen, effectively preventing metal atoms from reacting with oxygen to form a hard oxide layer, thereby preventing the oxide layer from causing micro cracks during the stamping process. The flexible protective film formed by the anti-rust liquid maintains the active state of the metal cross section, thereby improving the ductility of the material during stamping deformation and avoiding stamping cracking defects caused by surface hardening.

[0071] The lubricating film formed by the rust-proof liquid on the metal cross-section can reduce the dynamic friction coefficient between the stamping die and the material, thereby reducing the material flow resistance during the stamping process and avoiding rebound deformation caused by local stress concentration. At the same time, it can make the metal plate 30 fill the mold cavity more evenly, thereby improving the dimensional tolerance acceptance rate of key parts (such as hinge holes and mounting slots) of metal workpieces such as battery pack special-shaped housings, automatic clamping springs for electric vehicle cooling pipes, corrugated cards for automobile air compressor control valve plates, intake and exhaust valve plates, and wipers.

[0072] By frictionally contacting and clamping the cross-sections on both sides of the metal plate 30 during rotation, the contact tube 51 can form a dynamic guide limit. When the metal plate 30 is continuously fed into the stamping area, the rotational friction force and lateral pressure of the contact tube 51 constrain the lateral deviation of the metal plate 30, preventing it from swinging during transportation and ensuring that it accurately enters the center position of the stamping die. Moreover, the clamping force of the two sets of contact tubes 51 works in coordination with the travel direction of the metal plate 30, eliminating the need for additional guide rollers or positioning fixtures, thereby simplifying the equipment structure.

[0073] Specifically, the support box 40 is provided with a support shell 41, the support shell 41 is provided with a T-shaped guide groove 42, the support shell 41 is rotatably provided with a support rod 45, and the support rod 45 is provided with two sets of threaded outer walls 46 with opposite thread directions;

[0074] A T-shaped block 57 is provided at the bottom end of the support tube 50 , and the T-shaped block 57 is slidably set in the T-shaped guide groove 42 . Threaded holes 571 are opened on the T-shaped block 57 , and two groups of threaded holes 571 respectively cooperate with two groups of threaded outer walls 46 .

[0075] In this embodiment, by cooperating with the threaded holes 571 on the T-block 57 at the bottom end of the support tube 50 through the two sets of threaded outer walls 46 with opposite rotation directions provided on the support rod 45, and utilizing the sliding guiding effect of the T-block 57 by the T-guide groove 42, the spacing between the two sets of support tubes 50 can be adjusted synchronously, symmetrically and precisely. This structure ensures the balanced force exerted by the contact tube 51 on the cross-sections on both sides of the metal plate 30, so that the anti-rust liquid can evenly cover the cross-sections of the metal plates 30 of different widths, thereby effectively improving the adaptability of the device and the quality of the anti-rust treatment.

[0076] Specifically, the support box 40 is provided with a guide slope 43, and the support box 40 is provided with a connecting plate 44, and the connecting plate 44 is connected to the side wall of the biaxial punching machine 10 by bolts;

[0077] An extension rod 47 is provided on the outer wall of the support box 40 . A rotating hand wheel 48 is provided on the extension rod 47 . The extension rod 47 is in transmission connection with the support rod 45 .

[0078] In this embodiment, the coordinated design of the guiding slope 43, the modular connecting plate 44 and the rotating hand wheel 48 achieves the unity of rapid installation, efficient maintenance and convenient operation of the device;

[0079] The guiding slope 43 effectively guides the rust-proof liquid to flow back, preventing the liquid from being retained and corroding the components;

[0080] The modular connecting plate 44 is rigidly positioned with the dual-axis punch press 10 by bolts, ensuring precise coordination between the anti-rust treatment unit and the punching mainframe;

[0081] The rotating hand wheel 48 transmits the torque to the support rod 45 via the extension rod 47, so that the operator can adjust the spacing of the support tubes 50 safely and labor-savingly outside the equipment.

[0082] Specifically, two groups of limiting circular plates 56 are symmetrically provided on the outer wall of the support tube 50, and the contact tube 51 is rotatably provided between the two groups of limiting circular plates 56;

[0083] The support tube 50 is provided with multiple groups of liquid outlet grooves 53, which are arranged in a ring array. The support tube 50 is provided with two groups of elastic liquid inlet pipes 55, the liquid outlet grooves 53 are arranged at the top end of the support tube 50, and the elastic liquid inlet pipes 55 are arranged at the bottom end of the support tube 50.

[0084] In this case, the contact tube 51 is made of steel and wool felt from the inside out, and the anti-rust liquid is adsorbed by the wool felt.

[0085] In this embodiment, symmetrically arranged limiting circular plates 56 provide axial mechanical restraint for the contact tube 51, ensuring that the contact tube 51 rotates only about the axis of the support tube 50. This design effectively prevents axial displacement of the contact tube 51 during the conveyance of the metal plate 30, maintains the stability of its contact position with the cross-section of the metal plate 30, and avoids interruption of the anti-rust liquid coating or friction damage.

[0086] Multiple groups of liquid outlet slots 53 arranged in an annular array allow the rust-proof liquid to evenly seep from the inner cavity of the support tube 50 to the circumferential surface of the top of the contact tube 51. The annular liquid film completely wraps the cross-section of the metal plate 30 as the contact tube 51 rotates, eliminating coating blind spots and ensuring uninterrupted coverage of the rust-proof layer as the metal plate 30 continues to move.

[0087] The elastic liquid inlet pipe 55 absorbs the displacement deviation caused by the spacing adjustment or vibration of the support tube 50 through deformation, maintaining the liquid inlet channel always connected to the liquid source of the support box 40. Its flexible characteristics synchronously buffer the liquid pressure fluctuation, prevent uneven liquid discharge or pipe rupture due to sudden pressure changes, and enhance system reliability.

[0088] Specifically, the support tube 50 is provided with a top plate 52;

[0089] The guide assembly 60 includes a guide rod 61 , which is connected to the transmission frame 20 and is slidably set on the top plate 52 . A sealing plug 62 is provided at the bottom end of the guide rod 61 , and the sealing plug 62 is slidably set in the inner cavity of the support tube 50 .

[0090] In this embodiment, the guide rod 61 is linked to the transmission frame 20 to directly convert the lifting mechanical energy of the pressure plate 11 of the dual-axis punch press 10 into the reciprocating motion of the sealing plug 62, forming a piston pumping mechanism. This design does not require additional energy input and significantly reduces the energy consumption and equipment complexity of the rust prevention system by reusing the kinetic energy of the core moving parts.

[0091] Specifically, the sealing plug 62 is provided with a liquid outlet pipe 63;

[0092] The elastic liquid inlet pipe 55 is provided with a liquid inlet check valve 552, and the liquid inlet check valve 552 is used to prevent the anti-rust oil from flowing from the support pipe 50 into the elastic liquid inlet pipe 55;

[0093] The liquid outlet pipe 63 is provided with a liquid outlet one-way valve 64 , and the liquid outlet one-way valve 64 is used to prevent air from entering the liquid outlet pipe 63 .

[0094] In this embodiment, a liquid inlet check valve 552 is provided in the elastic liquid inlet pipe 55 to restrict the rust-proof liquid to flow in one direction only from the support box 40 to the inner cavity of the support tube 50, effectively preventing the rust-proof liquid from flowing back due to gravity or pressure fluctuations, thereby ensuring the irreversibility of the liquid delivery path.

[0095] A liquid outlet one-way valve 64 is provided on the liquid outlet pipe 63 of the sealing plug 62 to strictly prevent external air from entering the pipe and the inner cavity of the support tube 50, thereby avoiding discontinuous liquid outlet due to gas-liquid mixing;

[0096] Of course, under the cooperation of the liquid inlet check valve 552 and the liquid outlet check valve 64, when the guide rod 61 drives the sealing plug 62 to reciprocate, a directional pressure-boosting pumping mechanism is formed. When the sealing plug 62 moves upward, the liquid inlet check valve 552 opens to suck in liquid, and the liquid outlet check valve 64 closes to maintain the positive pressure in the cavity; when the sealing plug 62 moves downward, the liquid inlet check valve 552 closes to block backflow, and the liquid outlet check valve 64 opens to force the liquid out of the liquid outlet pipe 63. When the sealing plug 62 is subsequently lifted, the rust-proof liquid at this time is driven to be discharged through the liquid outlet groove 53.

[0097] By coordinating the liquid inlet check valve 552 and the liquid outlet check valve 64, the mechanical motion of the dual-axis punch press 10 is converted into directional pumping power for the rust-proof liquid, thereby constructing a passive, self-enclosed fluid delivery system. While eliminating energy dependence, it also achieves the continuity, stability and process integration of the rust-proof treatment.

[0098] Specifically, a filter housing 551 is provided at the upper end of the elastic liquid inlet pipe 55, and a plurality of filter holes are provided on the surface of the filter housing 551;

[0099] The outer wall of the guide rod 61 is provided with a disturbance circular plate 54, and the disturbance circular plate 54 is slidably arranged in the inner cavity of the support tube 50;

[0100] Two groups of first fixing plates 541 are symmetrically arranged on the disturbance circular plate 54 . A second fixing plate 542 is arranged on the first fixing plate 541 . A fixing hole 545 is opened on the second fixing plate 542 . The two groups of elastic liquid inlet pipes 55 are respectively arranged in the two groups of fixing holes 545 .

[0101] In this embodiment, when the liquid outlet pipe 63 is lifted along with the sealing plug 62, the liquid outlet pipe 63 contacts the disturbance circular plate 54, which lifts the disturbance circular plate 54, allowing the rust-proof fluid to flow out of the liquid outlet groove 53. At the same time, the disturbance circular plate 54 drives the first fixed plate 541 and the second fixed plate 542 to rise and fall back and forth, causing the elastic liquid inlet pipe 55 in the fixed hole 545 to shake back and forth and generate vibration. This vibration shakes off impurities on the surface of the filter housing 551, thereby ensuring a normal pumping process.

[0102] By providing a filter housing 551 with multiple groups of filter holes at the mouth of the elastic liquid inlet pipe 55, impurity particles in the rust-proof liquid are effectively intercepted. The reciprocating lifting motion of the disturbance circular plate 54 driven by the guide rod 61 is transmitted to the elastic liquid inlet pipe 55 in the fixing hole 545 through the first fixing plate 541 and the second fixing plate 542, causing the pipe and the filter housing 551 to vibrate continuously. The vibration force effectively shakes off impurities attached to the surface of the filter housing 551, thereby preventing the filter holes from being blocked, ensuring that the rust-proof liquid flows continuously and smoothly into the inner cavity of the support pipe 50, and maintaining the normal operation of the pumping process.

[0103] The lifting and lowering action of the disturbance circular plate 54 is directly triggered by the lifting of the sealing plug 62 in the liquid outlet pipe 63. Its power comes from the reciprocating punching motion of the upper pressure plate 11 of the double-axis punch press 10 and is transmitted through the transmission frame 20 and the guide rod 61. This design does not require an additional drive source or control device, and cleverly utilizes the mechanical kinetic energy of the punching device itself to realize the automation and integration of the self-cleaning function of the filtration system, reducing the system complexity and energy consumption.

[0104] Specifically, the disturbance circular plate 54 is provided with a spring 543 , the spring 543 is sleeved on the outer wall of the guide rod 61 , and the spring 543 is provided between the disturbance circular plate 54 and the top plate 52 ;

[0105] A disturbance plate 544 is provided at the bottom end of the second fixing plate 542;

[0106] The second fixing plate 542 is further provided with a contact plate 546 , and the contact plate 546 contacts the surface of the contact tube 51 .

[0107] In this embodiment, the spring 543 is sleeved on the outer wall of the guide rod 61 and pre-pressed between the disturbance circular plate 54 and the top plate 52 to form an elastic buffer structure. When the liquid outlet pipe 63 lifts the disturbance circular plate 54, the spring 543 compresses to absorb the impact energy; when the lifting force disappears, the spring 543 releases its elastic force to drive the disturbance circular plate 54 to return to its original position.

[0108] Of course, during the lifting and lowering process of the second fixing plate 542, the disturbance plate 544 can be driven to lift and lower, so as to disturb the anti-rust fluid in the support box 40 and avoid stratification of the anti-rust fluid;

[0109] Of course, by providing the contact plate 546 , while improving the rigidity of the second fixing plate 542 , impurities on the surface of the contact tube 51 can be scraped off, thereby preventing impurities from adhering to the surface of the metal plate 30 .

[0110] Specifically, the double-axis punch press 10 is provided with two sets of transmission holes 13;

[0111] The transmission frame 20 includes a first transmission plate 21, which is connected to two groups of guide rods 61. Two groups of second transmission plates 22 are provided at both ends of the first transmission plate 21. A third transmission plate 23 is provided between the two groups of second transmission plates 22. The two groups of second transmission plates 22 are respectively provided in two groups of transmission holes 13. The third transmission plate 23 is connected to the pressure plate 11.

[0112] In this embodiment, the transmission frame 20 adopts a three-stage plate linkage structure, namely the first transmission plate 21 to the second transmission plate 22 to the third transmission plate 23, to achieve efficient transmission of punching force and synchronous movement, and maintain the symmetry and stability of the rust-proof liquid pumping action.

[0113] A method for using a stamping device for an automobile metal workpiece with automatic cross-section rust prevention treatment, comprising the following steps:

[0114] S1. Dynamic spacing adjustment:

[0115] The rotating hand wheel 48 drives the support rod 45 to rotate through the extension rod 47, and uses its two sets of oppositely threaded outer walls 46 to synchronously adjust the distance between the two sets of support tubes 50, so that the contact tube 51 contacts the cross-sections on both sides of the metal plate 30;

[0116] S2, anti-rust liquid self-circulation start:

[0117] The biaxial punch press 10 is started, and the pressing plate 11 is raised and lowered, driving the guide rod 61 to reciprocate through the transmission frame 20. This causes the sealing plug 62 to pump the rust-proof liquid into the inner cavity of the support tube 50. When the sealing plug 62 is raised, the liquid inlet check valve 552 opens, and the rust-proof liquid is sucked into the inner cavity of the support tube 50 through the elastic liquid inlet pipe 55. When the sealing plug 62 is pressed downward, the liquid outlet check valve 64 opens, and the rust-proof liquid enters the top of the sealing plug 62 through the liquid outlet pipe 63. When the sealing plug 62 is raised again, it is driven by the sealing plug 62 to seep out of the liquid outlet groove 53 onto the surface of the contact tube 51.

[0118] S3, Spin coating and self-cleaning:

[0119] The metal sheet 30 is continuously fed into the biaxial punch press 10. Its cross section frictionally contacts the rotating contact tube 51, causing the anti-rust liquid to evenly coat the cross section. Simultaneously, the movement of the guide rod 61 causes the disturbance circular plate 54 to vibrate. The vibration is transmitted to the fixing hole 545, shaking off impurities on the surface of the filter housing 551 on the elastic liquid inlet pipe 55.

[0120] S4, stamping synergistic anti-rust treatment:

[0121] The metal plate 30 that has been treated with rust prevention is punched and formed in the biaxial punch press 10 . The cross-section rust prevention film provides lubrication during the punching process, reduces material flow resistance, and inhibits oxidation after punching.

[0122] Specifically, in step S1 , the support tube 50 is adjusted in spacing by sliding along the T-shaped guide groove 42 through the bottom T-shaped block 57 , and during the adjustment process, the elastic liquid inlet pipe 55 maintains communication with the support box 40 through deformation.

[0123] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A stamping device for automobile metal workpieces with automatic cross-section rust prevention treatment, characterized by: The invention comprises a double-axis punching machine (10), wherein the double-axis punching machine (10) is used for continuously punching a metal plate (30) to form a metal workpiece for a new energy vehicle, wherein the double-axis punching machine (10) is provided with a lifting and lowering pressing plate (11), and the double-axis punching machine (10) is also provided with a base (12); A support box (40) is provided at the side end of the double-axis punch press (10), and anti-rust liquid is provided in the support box (40). Two groups of support tubes (50) are symmetrically provided in the support box (40), and contact tubes (51) are rotatably provided on the outer wall of the support tube (50). The metal plate (30) contacts the two groups of contact tubes (51). A guide assembly (60) is provided in the support tube (50), and a transmission frame (20) is provided on the two groups of the guide assemblies (60). The transmission frame (20) cooperates with the pressing plate (11) so that the guide assembly (60) moves in the support tube (50), guides the anti-rust liquid into the inner cavity of the support tube (50), and flows out from the top end of the support tube (50) and wraps around the outer wall of the contact tube (51).

2. The automobile metal workpiece stamping device with automatic cross-section rust prevention according to claim 1, characterized in that: A support shell (41) is provided in the support box (40), the support shell (41) is provided with a T-shaped guide groove (42), a support rod (45) is rotatably provided in the support shell (41), and the support rod (45) is provided with two groups of threaded outer walls (46) with opposite thread directions; A T-shaped block (57) is provided at the bottom end of the support tube (50), and the T-shaped block (57) is slidably arranged in the T-shaped guide groove (42). The T-shaped block (57) is provided with threaded holes (571), and two groups of threaded holes (571) are respectively matched with two groups of threaded outer walls (46); A guide slope (43) is provided in the support box (40), and a connecting plate (44) is provided on the support box (40), and the connecting plate (44) is connected to the side wall of the double-axis punching machine (10) through bolts; An extension rod (47) is provided on the outer wall of the support box (40), a rotating hand wheel (48) is provided on the extension rod (47), and the extension rod (47) is transmission-connected to the support rod (45).

3. The stamping device for automobile metal workpieces with automatic cross-section rust prevention according to claim 2, characterized in that: Two groups of limiting circular plates (56) are symmetrically arranged on the outer wall of the support tube (50), and the contact tube (51) is rotatably arranged between the two groups of limiting circular plates (56); The support tube (50) is provided with a plurality of groups of liquid outlet grooves (53), which are arranged in a ring array. The support tube (50) is provided with two groups of elastic liquid inlet pipes (55), the liquid outlet grooves (53) are arranged at the top end of the support tube (50), and the elastic liquid inlet pipes (55) are arranged at the bottom end of the support tube (50).

4. The automobile metal workpiece stamping device with automatic cross-section rust prevention according to claim 3, characterized in that: The support tube (50) is provided with a top plate (52); The guide assembly (60) includes a guide rod (61), the guide rod (61) is connected to the transmission frame (20), the guide rod (61) is slidably arranged on the top plate (52), and a sealing plug (62) is provided at the bottom end of the guide rod (61), and the sealing plug (62) is slidably arranged in the inner cavity of the support tube (50).

5. The automobile metal workpiece stamping device with automatic cross-section rust prevention according to claim 4, characterized in that: The sealing plug (62) is provided with a liquid outlet pipe (63); The elastic liquid inlet pipe (55) is provided with a liquid inlet one-way valve (552), and the liquid inlet one-way valve (552) is used to prevent the anti-rust oil from flowing from the support pipe (50) into the elastic liquid inlet pipe (55); The liquid outlet pipe (63) is provided with a liquid outlet one-way valve (64), and the liquid outlet one-way valve (64) is used to prevent air from entering the liquid outlet pipe (63).

6. The automobile metal workpiece stamping device with automatic cross-section rust prevention according to claim 5, characterized in that: A filter housing (551) is provided at the upper end of the elastic liquid inlet pipe (55), and a plurality of filter holes are provided on the surface of the filter housing (551); The outer wall of the guide rod (61) is sleeved with a disturbance circular plate (54), and the disturbance circular plate (54) is slidably arranged in the inner cavity of the support tube (50); Two groups of first fixing plates (541) are symmetrically arranged on the disturbance circular plate (54), a second fixing plate (542) is arranged on the first fixing plate (541), a fixing hole (545) is opened on the second fixing plate (542), and the two groups of elastic liquid inlet pipes (55) are respectively arranged in the two groups of fixing holes (545).

7. The automobile metal workpiece stamping device with automatic cross-section rust prevention according to claim 6, characterized in that: The disturbance circular plate (54) is provided with a spring (543), the spring (543) is sleeved on the outer wall of the guide rod (61), and the spring (543) is provided between the disturbance circular plate (54) and the top plate (52); A disturbance plate (544) is provided at the bottom end of the second fixing plate (542); The second fixing plate (542) is further provided with a contact plate (546), and the contact plate (546) is in contact with the surface of the contact tube (51).

8. The automobile metal workpiece stamping device with automatic cross-section rust prevention according to claim 7, characterized in that: The double-axis punching machine (10) is provided with two sets of transmission holes (13); The transmission frame (20) includes a first transmission plate (21), the first transmission plate (21) is connected to two groups of guide rods (61), two groups of second transmission plates (22) are provided at both ends of the first transmission plate (21), a third transmission plate (23) is provided between the two groups of second transmission plates (22), the two groups of second transmission plates (22) are respectively provided in two groups of transmission holes (13), and the third transmission plate (23) is connected to the pressure plate (11).

9. A method for using the automobile metal workpiece stamping device with automatic cross-section rust prevention treatment according to claim 8, characterized in that: The following steps are involved: S1. Dynamic spacing adjustment: The hand wheel (48) is rotated to drive the support rod (45) to rotate via the extension rod (47), and the spacing between the two groups of support tubes (50) is synchronously adjusted by using the two groups of reverse threaded outer walls (46) thereof, so that the contact tube (51) contacts the cross sections on both sides of the metal plate (30); S2, anti-rust liquid self-circulation start: The double-axis punch press (10) is started, and the pressing plate (11) is lifted and lowered to drive the guide rod (61) to reciprocate through the transmission frame (20), so that the sealing plug (62) pumps the rust-proof liquid into the inner cavity of the support tube (50). When the sealing plug (62) is lifted, the liquid inlet check valve (552) is opened, and the rust-proof liquid is sucked into the inner cavity of the support tube (50) through the elastic liquid inlet pipe (55); when the sealing plug (62) is pressed down, the liquid outlet check valve (64) is opened, and the rust-proof liquid enters the top of the sealing plug (62) through the liquid outlet pipe (63), and when the sealing plug (62) is lifted next time, the sealing plug (62) drives the rust-proof liquid to seep out from the liquid outlet groove (53) to the surface of the contact tube (51); S3, Spin coating and self-cleaning: The metal plate (30) is continuously fed into the biaxial punching machine (10), and its cross section is in frictional contact with the rotating contact tube (51), so that the anti-rust liquid evenly covers the cross section. At the same time, the movement of the guide rod (61) drives the disturbance circular plate (54) to vibrate, and the vibration is transmitted to the fixing hole (545), thereby shaking off impurities on the surface of the filter housing (551) on the elastic liquid inlet pipe (55); S4, stamping synergistic anti-rust treatment: The metal plate (30) that has been subjected to rust prevention treatment is punched and formed in a biaxial punching machine (10).

10. The method for using the automobile metal workpiece stamping device with automatic cross-section rust prevention treatment according to claim 9, characterized in that: In step S1, the support tube (50) is adjusted in spacing by sliding along the T-shaped guide groove (42) via the bottom T-shaped block (57).

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