A method and system for stamping linear guide rails for high-speed rail battery trays

Abstract

The invention discloses a method and system for stamping a linear guide rail of a high-speed railway battery tray, and specifically relates to the technical field of guide rail stamping, including a punch press, an upper die and a lower die, the punch press comprising a pressing block and a workbench, the upper die comprising an upper die seat fixedly connected to the pressing block, a backing plate fixedly connected to one end of the upper die seat away from the pressing block, the lower die comprising a lower die seat fixedly connected to the workbench, a die fixedly connected to one end of the lower die seat away from the workbench, a wedge block slidably connected inside the die; the backing plate can cooperate with the wedge block to extrude the side of the stamped part, and the invention performs secondary correction on the bent guide rail and compensates for the die size through the stamping plate during the stamping process, so as to prevent rebound of the bent part of the stamped part after unloading and dimensional deviation caused by die wear, so as to ensure the dimensional accuracy and bending angle accuracy of the stamped part.

Description

Technical Field

[0001] The present invention relates to the technical field of guide rail stamping, and more specifically, to a method and system for stamping a linear guide rail for a high-speed railway battery tray. Background Art

[0002] High-speed rail basically uses alternating current as the current standard of the traction network of high-speed rail trains. The traction power supply system can transform the electric energy transmitted by the national power system into a form suitable for electric locomotives to ensure the traction power of high-speed rail. At the same time, each high-speed rail car also has its own battery as an emergency backup power source; the battery box is generally installed in a tray, and the tray is pulled out of the battery box through the guide rail to replace and maintain the battery.

[0003] However, in the production process of linear guide rails, when the linear guide rails are stamped and bent, the bending angle is easily inaccurate due to the uneven stress distribution inside the material. During the stamping process, the material will undergo elastic deformation when subjected to pressure. When the pressure is removed, the material will rebound to a certain extent, thereby affecting the bending angle of the stamped part. The mold for stamping the guide rails will wear during long-term use. The worn mold will cause the size of the stamped guide rails to change. Therefore, the present invention proposes a method and system for stamping linear guide rails for high-speed rail battery trays to solve the above problems. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a method and system for stamping a linear guide rail for a high-speed railway battery tray, which performs secondary stamping on the workpiece through the cooperation of a pad and a wedge block and compensates for wear through the stamping plate to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a method and system for stamping a linear guide rail for a high-speed railway battery tray, comprising: a punch press, the punch press comprising a pressing block and a workbench, and also comprising: an upper die and a lower die, the upper die comprising an upper die seat fixedly connected to the pressing block, and the end of the upper die seat away from the pressing block is fixedly connected to a pad; a punch is slidably connected to the inside of the pad, and both ends of the punch are respectively fixedly connected to limiting rods, and limiting grooves are respectively provided at both ends of the pad, and the limiting rods slide inside the limiting grooves, and a plurality of connecting columns are fixedly connected to one end of the punch close to the top of the pad, and the outer wall of each of the connecting columns is slidably connected to a first air cylinder, and the end of each of the first air cylinders away from the punch is fixedly connected to the pad; the lower die comprises a lower die seat fixedly connected to the workbench, and the end of the lower die seat away from the workbench is fixedly connected to a die, and a wedge block is slidably connected to the inside of the die.

[0006] Preferably, a plurality of second gas cylinders are fixedly connected to both sides of the concave mold, the inner wall of the second gas cylinder is slidably connected to the first piston, one end of each of the first pistons is fixedly connected to the first piston rod, a first elastic member is arranged in each of the second gas cylinders, one end of each of the first elastic members is fixedly connected to the end of the corresponding first piston away from the first piston rod, the other end of each of the first elastic members is fixedly connected to the inner wall of the second gas cylinder, and a second ventilation hole is provided at one end of the second gas cylinder close to the first elastic member.

[0007] Preferably, there are two wedge blocks which are symmetrically distributed along the center line of the die, and the ends of the two wedge blocks which are away from each other are fixedly connected to the first piston rod on the same side.

[0008] Preferably, a slide groove is opened in the concave mold, and a support block is slidably connected inside the slide groove. A second elastic member is arranged inside the slide groove, and one end of the second elastic member is fixedly connected to an end of the support block close to the slide groove, and the other end of the second elastic member is fixedly connected to the inner wall of the slide groove.

[0009] Preferably, air collecting grooves are symmetrically opened in the die, and the inner wall of each air collecting groove is slidably connected to a slider, one end of each slider is fixedly connected to a connecting plate, and the end of each connecting plate away from the slider is fixedly connected to a stamping plate, and a ventilation groove is opened in the die, and the ventilation groove is connected to the sliding groove and the air collecting groove.

[0010] Preferably, the outer wall of each of the first air cylinders is provided with a first vent hole, and adjacent first vent holes are interconnected. The outer walls of the first air cylinders at both ends of the pad are provided with a third vent hole, and the third vent hole is connected to the second vent hole.

[0011] Preferably, a plurality of pneumatic springs are fixedly connected to the lower die base, and a plurality of guide posts are fixedly connected to the upper die base, and each of the guide posts cooperates with the pneumatic spring.

[0012] Preferably, the pad is provided with an avoidance hole corresponding to the third vent hole.

[0013] A punching method for a high-speed railway battery tray linear guide stamping system is also provided, comprising the following steps:

[0014] S1. Place the workpiece to be stamped on the top surface of the wedge block;

[0015] S2. Start the punch press, and the pressing block pushes the upper die downward;

[0016] S3. When the punch is pressed down to the workpiece, as the punch continues to be pressed down, the workpiece is initially punched;

[0017] S4. When the punch drops to the limit position, the pad squeezes the wedge block to clamp the workpiece and perform secondary stamping on the workpiece;

[0018] S5. The stamping plate slides toward the punch to extrude the workpiece and compensate for the wear of the die.

[0019] Technical effects and advantages of the present invention:

[0020] 1. The present invention compensates the die size through the stamping plate to prevent the size deviation caused by die wear. After the die is unloaded, the matching clearance between the die and the stamping part becomes larger, reducing the friction between the die and the stamping part.

[0021] 2. The present invention performs secondary correction on the bent guide rail during the stamping process to prevent the bent portion of the stamping part from rebounding after the force is unloaded, thereby ensuring the accuracy of the bending angle.

[0022] 3. The present invention reduces stress concentration and prevents inaccurate bending angles due to uneven material stress distribution by gradually changing the material from a "U" shape to a "concave" shape during the stamping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a front view of the overall structure of the present invention.

[0025] Figure 3 It is a schematic diagram of the upper mold and lower mold structure of the present invention.

[0026] Figure 4 It is a sectional view of the overall structure of the upper mold and the lower mold of the present invention.

[0027] Figure 5 It is a cross-sectional view of the upper die and the lower die in the punching state of the present invention.

[0028] Figure 6 It is a cross-sectional view of the overall structure of the upper mold of the present invention.

[0029] Figure 7 It is a cross-sectional view of the overall structure of the lower mold of the present invention.

[0030] Figure 8 For the present invention Figure 7 A-axis structure enlarged view.

[0031] Fig. 9 It is a side view of the overall structure of the upper mold of the present invention.

[0032] The accompanying drawings are marked as follows: 1. punch press; 11. pressing block; 12. workbench; 2. upper die; 21. upper die seat; 211. guide column; 22. pad; 221. limit groove; 23. punch; 231. limit rod; 24. connecting column; 25. first air cylinder; 251. first vent hole; 252. third vent hole; 3. lower die; 31. lower die seat; 311. pneumatic spring; 32. die; 321. slide groove; 322. second elastic member; 323. vent groove; 324. air collecting groove; 33. wedge block; 34. second air cylinder; 341. first elastic member; 342. second vent hole; 35. first piston; 351. first piston rod; 36. support block; 37. slider; 371. connecting plate; 372. stamping plate. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0034] Example 1

[0035] In the actual production process, due to the uneven stress distribution inside the material, it is easy to cause inaccurate bending angle. When the pressure is removed, the material will rebound to a certain extent, thereby affecting the bending angle of the stamping part. This embodiment is specially invented to solve the above problem.

[0036] See also Figure 1 and Figure 2 As shown, a method and system for punching a linear guide rail of a high-speed railway battery tray according to an embodiment of the present invention includes a punching machine 1, the punching machine 1 includes a pressing block 11 and a workbench 12, and also includes: an upper die 2 and a lower die 3, the upper die 2 includes an upper die seat 21 fixedly connected to the pressing block 11, and an end of the upper die seat 21 away from the pressing block 11 is fixedly connected to a pad 22; the lower die 3 includes a lower die seat 31 fixedly connected to the workbench 12, and an end of the lower die seat 31 away from the workbench 12 is fixedly connected to a die 32, and a wedge block 33 is slidably connected inside the die 32; please refer to the embodiment of the present invention. Figure 3 and Figure 6 As shown, the backing plate 22 can cooperate with the wedge block 33 to press the side of the stamping part.

[0037] See also Figure 6 and Fig. 9 As shown, the inner part of the backing plate 22 is slidably connected with a punch 23, and the two ends of the punch 23 are respectively fixedly connected with a limit rod 231. The two ends of the backing plate 22 are respectively provided with a limit groove 221, and the limit rod 231 slides inside the limit groove 221. Figure 4 As shown, one end of the punch 23 close to the inner top of the pad 22 is fixedly connected to a plurality of connecting columns 24 , the outer wall of each connecting column 24 is slidably connected to a first air cylinder 25 , and one end of each first air cylinder 25 away from the punch 23 is fixedly connected to the pad 22 .

[0038] See also Figure 3 and Figure 7 As shown, a plurality of second air cylinders 34 are fixedly connected to both sides of the concave mold 32. Figure 8 As shown, the inner wall of the second gas cylinder 34 is slidably connected with the first piston 35, one end of each first piston 35 is fixedly connected with the first piston rod 351, and a first elastic member 341 is arranged in each second gas cylinder 34, one end of each first elastic member 341 is fixedly connected with the end of the corresponding first piston 35 away from the first piston rod 351, and the other end of each first elastic member 341 is fixedly connected with the inner wall of the second gas cylinder 34, and a second vent hole 342 is provided at the end of the second gas cylinder 34 close to the first elastic member 341, there are two wedge blocks 33 and they are symmetrically distributed along the center line of the die 32, and the ends of the two wedge blocks 33 away from each other are fixedly connected with the first piston rod 351 on the same side, wherein the first elastic member 341 is a spring.

[0039] See also Figure 6 and Figure 8 As shown, the outer wall of each first air cylinder 25 is provided with a first vent hole 251, and the adjacent first vent holes 251 are connected to each other. The outer walls of the first air cylinders 25 at both ends of the pad 22 are provided with third vent holes 252, and the third vent holes 252 are connected to the second vent holes 342 through a soft air tube. Figure 2 As shown, a avoidance hole corresponding to the third vent hole 252 is opened on the pad 22, wherein the soft air tube is a prior art and is not described in detail here.

[0040] See also Figure 3 and Figure 5 As shown, a plurality of pneumatic springs 311 are fixedly connected to the lower die base 31, and a plurality of guide posts 211 are fixedly connected to the upper die base 21. Each guide post 211 cooperates with a pneumatic spring 311, and the guide posts 211 correspond to the corresponding pneumatic springs 311 in the vertical direction.

[0041] When in use, the punch press 1 is started, and the pressing block 11 pushes the upper die seat 21 to move downward so that the pad 22 drives the punch 23 to move downward. When the punch 23 moves to the surface of the workpiece, the workpiece gradually produces a "U" shape deformation with the movement of the punch 23. When the punch 23 moves to the bottom of the die 32, the punch 23 and the die 32 squeeze each other so that the workpiece gradually changes from a "U" shape to a "concave" shape, thereby reducing stress concentration and preventing uneven stress distribution inside the material, which leads to an inaccurate bending angle. At this time, the pad 22 continues to Moving downward causes the punch 23 to slide inside the pad 22, thereby causing the connecting column 24 to slide inside the first air cylinder 25. The connecting column 24 squeezes the gas inside the first air cylinder 25, causing the gas to pass through the third air hole 252 and the first air hole 251. At the same time, the pad 22 pushes the two wedge blocks 33 to move toward the punch 23, causing the two wedge blocks 33 to gradually clamp the punch 23, thereby performing a secondary stamping on the workpiece to prevent the material from rebounding to a certain extent after the pressure is removed, thereby affecting the bending angle of the stamped part.

[0042] Example 2

[0043] It was found in actual production that since the mold for stamping the guide rail will wear out during long-term use, the worn mold will cause the size of the stamped guide rail to change, and further improvements are made on the basis of the above embodiment.

[0044] See also Figure 4 and Figure 5 As shown, a slide groove 321 is opened in the concave mold 32, and a support block 36 is slidably connected inside the slide groove 321. A second elastic member 322 is arranged inside the slide groove 321, and one end of the second elastic member 322 is fixedly connected to one end of the support block 36 close to the slide groove 321, and the other end of the second elastic member 322 is fixedly connected to the inner wall of the slide groove 321, wherein the second elastic member 322 is a spring.

[0045] See also Figure 5 As shown, air collecting grooves 324 are symmetrically provided in the die 32, and a slider 37 is slidably connected to the inner wall of each air collecting groove 324. A connecting plate 371 is fixedly connected to one end of each slider 37, and a stamping plate 372 is fixedly connected to the end of each connecting plate 371 away from the slider 37. Ventilation grooves 323 are provided in the die 32, and the ventilation grooves 323 are connected to the sliding grooves 321 and the air collecting grooves 324.

[0046] On the basis of the above embodiment, during use, when the mold is worn, when the punch 23 is pressed down to the top of the support block 36, the punch 23 continues to press down to make the support block 36 move downward, at this time, the gas inside the slide groove 321 is compressed, and the pressure inside the gas collecting groove 324 increases, so that the slider 37 slides inside the gas collecting groove 324, so that the connecting plate 371 drives the stamping plate 372 to move toward the punch 23, and the stamping plate 372 is squeezed toward the punch 23 to compensate for the mold size, so as to prevent the punching machine 1 from stamping multiple times, causing the stamping part to wear the stamping plate 372, causing the gap between the stamping plate 372 and the punch 23 to become smaller. Large, resulting in deviation in the size of the stamping parts. When the stamping is completed, the pressure block 11 drives the pad 22 to rise, and at the same time, the first elastic member 341 contracts, causing the first piston rod 351 to drive the wedge block 33 to move to both sides. When the wedge block 33 moves to the extreme position, the pad 22 drives the punch 23 to rise, so that the pressure on the top of the support block 36 is reduced, so that the second elastic member 322 relaxes and drives the support block 36 to move upward. At this time, the internal pressure of the air collecting groove 324 becomes smaller, and the slider 37 drives the stamping plate 372 to slide to both sides of the die 32, thereby increasing the fitting clearance between the mold and the stamping part and reducing the friction between the mold and the stamping part.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A linear guide rail punching system for a high-speed railway battery tray, comprising a punching machine (1), wherein the punching machine (1) comprises a pressing block (11) and a workbench (12), characterized in that: Also includes: An upper die (2), the upper die (2) comprising an upper die seat (21) fixedly connected to the pressing block (11), one end of the upper die seat (21) away from the pressing block (11) being fixedly connected to a backing plate (22), the inside of the backing plate (22) being slidably connected to a punch (23), both ends of the punch (23) being fixedly connected to limiting rods (231), both ends of the backing plate (22) being provided with limiting grooves (221), the limiting rods (231) sliding inside the limiting grooves (221), one end of the punch (23) close to the inner top of the backing plate (22) being fixedly connected to a plurality of connecting columns (24), the outer wall of each connecting column (24) being slidably connected to a first air cylinder (25), and one end of each first air cylinder (25) away from the punch (23) being fixedly connected to the backing plate (22); A lower die (3), the lower die (3) comprising a lower die base (31) fixedly connected to the workbench (12), one end of the lower die base (31) away from the workbench (12) being fixedly connected to a concave die (32), and a wedge block (33) being slidably connected inside the concave die (32); A plurality of second gas cylinders (34) are fixedly connected to both sides of the concave mold (32), the inner wall of the second gas cylinder (34) is slidably connected to a first piston (35), one end of each of the first pistons (35) is fixedly connected to a first piston rod (351), a first elastic member (341) is provided in each of the second gas cylinders (34), one end of each of the first elastic members (341) is fixedly connected to an end of the corresponding first piston (35) away from the first piston rod (351), the other end of each of the first elastic members (341) is fixedly connected to the inner wall of the second gas cylinder (34), and a second vent hole (342) is provided at one end of the second gas cylinder (34) close to the first elastic member (341); The outer wall of each first air cylinder (25) is provided with a first vent hole (251), and adjacent first vent holes (251) are connected to each other. The outer walls of the first air cylinders (25) at both ends of the pad (22) are provided with third vent holes (252), and the third vent holes (252) are connected to the second vent holes (342); The pad (22) can cooperate with the wedge block (33) to press the side surface of the stamping part.

2. The high-speed railway battery tray linear guide stamping system according to claim 1 is characterized in that: There are two wedge blocks (33) symmetrically distributed along the center line of the die (32); the ends of the two wedge blocks (33) that are away from each other are fixedly connected to the first piston rod (351) on the same side.

3. The high-speed railway battery tray linear guide stamping system according to claim 2 is characterized in that: A slide groove (321) is provided in the concave mold (32), a support block (36) is slidably connected inside the slide groove (321), a second elastic member (322) is provided inside the slide groove (321), one end of the second elastic member (322) is fixedly connected to an end of the support block (36) close to the slide groove (321), and the other end of the second elastic member (322) is fixedly connected to the inner wall of the slide groove (321).

4. The high-speed railway battery tray linear guide stamping system according to claim 3 is characterized in that: The die (32) is symmetrically provided with air collecting grooves (324), the inner wall of each air collecting groove (324) is slidably connected to a slider (37), one end of each slider (37) is fixedly connected to a connecting plate (371), and one end of each connecting plate (371) away from the slider (37) is fixedly connected to a stamping plate (372), and a ventilation groove (323) is provided in the die (32), and the ventilation groove (323) is connected to the sliding groove (321) and the air collecting groove (324).

5. The high-speed railway battery tray linear guide stamping system according to claim 4 is characterized in that: A plurality of pneumatic springs (311) are fixedly connected to the lower die base (31), and a plurality of guide posts (211) are fixedly connected to the upper die base (21), each of the guide posts (211) being matched with the pneumatic spring (311).

6. The high-speed railway battery tray linear guide stamping system according to claim 5 is characterized in that: The pad (22) is provided with an avoidance hole corresponding to the third vent hole (252).

7. A punching method for a linear guide rail punching system for a high-speed railway battery tray, using the linear guide rail punching system for a high-speed railway battery tray as claimed in claim 6, characterized in that: The following steps are involved: S1. The workpiece to be stamped is placed on the top surface of the wedge block (33); S2. Start the punch press (1), and the pressing block (11) pushes the upper die (2) downward; S3. When the punch (23) is pressed down to the workpiece, as the punch (23) continues to be pressed down, the workpiece is initially punched; S4. When the punch (23) drops to the limit position, the pad (22) squeezes the wedge block (33) to clamp the workpiece, and performs secondary stamping on the workpiece; S5. The punch plate (372) slides in the direction of the punch (23) to extrude the workpiece and compensate for the wear of the die.

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