A metal sheet punching device for mechanical engineering

Abstract

The invention discloses a metal sheet stamping device for mechanical engineering, and relates to the technical field of metal sheet stamping. The invention comprises a cabinet, wherein an operating table is fixedly installed on the top of the front side of the cabinet, a mother block is fixedly installed in the middle of the top surface of the cabinet, a circular opening is opened in the middle of the top surface of the cabinet, a circular opening is opened at the bottom end of the mother block, the circular opening of the mother block is aligned with the circular opening of the cabinet, a top plate assembly is arranged on the left and right sides of the inner wall of the cabinet, the top plate assembly comprises four ring blocks, the four ring blocks are fixedly installed on the inner wall of the cabinet in groups of two, and two electric telescopic rods are fixedly installed on the inner walls of the four ring blocks, respectively. The invention moves upward against the formed metal sheet by a disc, thereby avoiding the problem that when the stamping device completes stamping of the metal sheet for mechanical engineering, the metal sheet is stuck in the mother block, causing inconvenience in the equipment for stamping and taking out the parts.

Description

Technical Field

[0001] The invention relates to the technical field of metal sheet stamping, in particular to a metal sheet stamping device used in mechanical engineering. Background Art

[0002] Automotive sheet metal stamping is an important part of the automotive manufacturing process. It is mainly responsible for processing metal sheets into various parts of the car body. The metal sheet stamping device used in mechanical engineering applies high pressure to the metal sheet through different molds to form it into the desired shape, such as doors, hoods and other parts, effectively improving the quality of metal sheets and the efficiency of mechanical engineering.

[0003] The patent number CN216575063U discloses a continuous stamping device for metal sheet processing and production, which belongs to the field of metal processing technology, including a stamping machine, a stamping plate, a guide column and a stamping groove. The stamping plate is fixedly installed inside the stamping machine, and guide columns are fixedly installed on both sides of the stamping plate inside the stamping machine. A stamping groove is provided in the opening near the bottom of the stamping plate inside the stamping machine. The patent uses a worm sliding movable plate lip to quickly disassemble and install the upper stamping die, thereby increasing the stamping efficiency of the metal plate, making the metal plate stamping faster and more rapid, and increasing the practicality of the stamping machine. The stamping plate is quickly fixed and stamped by an electric telescopic rod and a fixed block to prevent the stamping plate from sliding during the stamping process, and the sliding fixed block can adapt to metal plates of different sizes, which is convenient for the staff to operate and process metal plates of different sizes.

[0004] However, the continuous stamping device for metal sheet processing and production currently has the following problems: when the continuous stamping device for metal sheet processing and production is in use, the metal sheet parts for mechanical engineering are easily stuck in the mother block during stamping, which makes it inconvenient to remove the parts from the equipment during stamping. Therefore, we propose a metal sheet stamping device for mechanical engineering. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a metal sheet stamping device for mechanical engineering, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A metal sheet stamping device for mechanical engineering, comprising a cabinet, an operating table is fixedly installed on the top of the front of the cabinet, a mother block is fixedly installed in the middle of the top surface of the cabinet, a round opening is opened in the middle of the top surface of the cabinet, a round opening is opened at the bottom end of the mother block, the round opening of the mother block is aligned with the round opening of the cabinet, and a top plate assembly is arranged on the left and right sides of the inner wall of the cabinet;

[0007] The top plate assembly includes four ring blocks, and the four ring blocks are fixedly installed on the inner wall of the cabinet in groups of two. Two electric telescopic rods are fixedly installed on the inner walls of the four ring blocks respectively. The telescopic ends of the two electric telescopic rods are respectively penetrated and slidably installed on the inner top of the cabinet. A pressure plate is fixed on the top surface of the telescopic ends of the two electric telescopic rods, and a sub-block is fixedly installed in the middle of the bottom surface of the pressure plate. The sub-block is located above the mother block. A U-shaped frame is fixed on the top of the outer wall of the telescopic ends of the two electric telescopic rods, and the outer wall of the U-shaped frame penetrates and is slidably connected to the inner top of the cabinet. A straight rod is fixed to the bottom end of the U-shaped frame, a disc is fixed to the top surface of the straight rod, and the disc is located inside the circular opening of the mother block. The pressure plate drives the sub-block to move downward. Under the action of the extrusion force, the metal sheet is punched into the mother block by the sub-block, so that the metal sheet is punched and formed. When the stamping of the metal sheet is completed, the telescopic end of the electric telescopic rod drives the U-shaped frame to move upward, the U-shaped frame drives the straight rod to move upward, the straight rod drives the disc to move upward, the disc moves upward against the formed metal sheet, so that the formed metal sheet is separated from the mother block, and a limit position component is set on the top of the inner wall of the U-shaped frame;

[0008] The limiting assembly includes a square plate, two of the square plates penetrate and are fixed on the top of the inner wall of the U-shaped frame, two straight frames are respectively fixed on the top surfaces of the two square plates, the top surfaces of the two straight frames are fixedly connected to the bottom surface of the pressure plate, the two straight frames are provided with round holes on the front and back surfaces, and two arc-shaped spring pieces are respectively fixed on the bottom surfaces of the two square plates, the arc-shaped spring pieces are in contact with the metal plate, and under the action of the extrusion force, the arc-shaped spring pieces are deformed, and under the elastic force of the arc-shaped spring pieces, the sub-blocks will not over-extrude the metal plate;

[0009] The inner walls of the circular holes of the two straight frames are provided with anti-deformation devices, and the outer walls of the anti-deformation devices are provided with heating devices.

[0010] According to the above technical solution, two buttons are provided on the top surface of the operating table, the bottom surfaces of the two electric telescopic rods are in contact with the inner bottom end of the cabinet, and the two square plates are respectively located on the left and right tops of the sub-block.

[0011] The cam is secured to the sides of the two rails and are easily broken by the two rails when the cam is engaged.

[0012] According to the above technical solution, the anti-deformation device also includes four connecting plates, four L-shaped rods and two baffles. The four connecting plates are respectively fixed on the side of the two horizontal plates away from each other, the four L-shaped rods are respectively fixed on the side of the four connecting plates away from each other, and the two baffles are respectively fixed on one end of the four L-shaped rods away from the four connecting plates. When the baffles move downward, the baffles prevent people from contacting the springs.

[0013] According to the above technical solution, two circular openings are respectively provided on the side away from each other of the two horizontal plates, the two long plates are located at the top of the front and back sides of the sub-block, the two rubber strips are located at the bottom of the front and back sides of the sub-block, and the two baffles are respectively located on the side away from each other of the two long plates.

[0014] According to the above technical solution, the heating device includes four racks, two square shells, two resistance heating rods and two heat conducting plates. The four racks are respectively fixed on four L-shaped rods, and the four racks are respectively located inside the circular openings of the two horizontal plates. The two square shells are respectively fixed on the ends of the four racks away from the four L-shaped rods. The two resistance heating rods are respectively fixed on the inner top ends of the two square shells. The two heat conducting plates are respectively fixed on the bottom of the inner walls of the two square shells. When the heat conducting plates move downward, the heat conducting plates transfer heat to the metal sheet, so that when the equipment is used in winter, the sub-blocks can more easily punch the metal sheet.

[0015] According to the above technical solution, the heating device also includes four round blocks, four L-shaped copper tubes and two strips. The four round blocks are fixedly installed in groups of two at the bottom of the two heat conducting plates. The four L-shaped copper tubes are fixed in the middle of the bottom surfaces of the four round blocks. The two strips are fixed at one end of the four L-shaped copper tubes away from the four round blocks. The heat conducting plates transfer heat to the strips, and the strips transfer heat to the sub-blocks, so that the sub-blocks can maintain a constant temperature to stamp metal sheets.

[0016] According to the above technical solution, the two heat conducting plates are respectively located below the two resistance heating rods, and the two strip plates are located above the left and right sides of the sub-block.

[0017] The present invention provides a metal sheet stamping device for mechanical engineering, which has the following beneficial effects:

[0018] (1) The present invention uses a ring block, an electric telescopic rod, a pressure plate, a sub-block, a U-shaped frame, a straight rod, a disc, a square plate and a straight frame in conjunction with an arc-shaped spring sheet. The pressure plate drives the sub-block to move downward. Under the action of the extrusion force, the metal sheet is punched into the mother block by the sub-block, so that the metal sheet is punched and formed. When the stamping of the metal sheet is completed, the telescopic end of the electric telescopic rod drives the U-shaped frame to move upward, the U-shaped frame drives the straight rod to move upward, the straight rod drives the disc to move upward, the disc moves upward against the formed metal sheet, so that the formed metal sheet is separated from the mother block, so that the metal sheet is prevented from being stuck in the mother block when the stamping device completes the stamping of the metal sheet for mechanical engineering, causing inconvenience in the equipment stamping and removing the parts. In addition, the arc-shaped spring sheet contacts the metal sheet, and under the action of the extrusion force, the arc-shaped spring sheet is deformed. Under the elastic force of the arc-shaped spring sheet, the sub-block will not over-press the metal sheet, so that the sub-block will not over-press the metal sheet, causing the metal sheet to be broken and damaged.

[0019] (2) The present invention sets an anti-deformation device so that the long rod, the horizontal plate, the sliding rod, the long plate, the spring, the rubber strip, the connecting plate and the L-shaped rod cooperate with the baffle plate, and the rubber strip contacts the metal plate. Under the action of the extrusion force, the sliding rod slides upward in the sliding hole of the horizontal plate, and the sliding rod drives the long plate to move upward. The long plate pulls the spring. Under the elastic force of the spring, the rubber strip is tightly pressed against the metal plate. When the metal plate is stamped by the quilt block, the rubber strip is pressed on the metal plate to prevent the metal plate from being greatly deformed during stamping, resulting in non-standard molding of the metal plate. In addition, when the baffle plate moves downward, the baffle plate blocks personnel from contacting the spring to prevent personnel from contacting the spring and causing injuries.

[0020] (3) The present invention arranges a heating device so that the frame rod, square shell, resistance heating rod, heat conductive plate, round block and L-shaped copper tube cooperate with the strip plate. When the heat conductive plate moves downward, the heat conductive plate transfers heat to the metal plate, so that when the equipment is used in winter, the sub-block can more easily punch the metal plate, and the metal plate can be prevented from being easily broken by punching when the punching device punches the metal plate in winter, resulting in poor punching effect. In addition, the heat conductive plate transfers heat to the strip plate, and the strip plate transfers heat to the sub-block, so that the sub-block can maintain a constant temperature to punch the metal plate, and the metal plate can be prevented from being stuck on the sub-block due to low-temperature punching when the punching device punches the metal plate in winter. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the present invention as a whole;

[0022] Figure 2 It is a cross-sectional schematic diagram of the present invention as a whole;

[0023] Figure 3 It is a cross-sectional schematic diagram of the cabinet of the present invention;

[0024] Figure 4 For the present invention Figure 3 A local enlarged schematic diagram of the middle A;

[0025] Figure 5 is a schematic diagram of the anti-deformation device of the present invention;

[0026] Figure 6 For the present invention Figure 5 A partial enlarged schematic diagram of point B in the middle;

[0027] Figure 7 is a schematic diagram of a temperature increasing device of the present invention;

[0028] Figure 8 For the present invention Figure 7 A partial enlarged schematic diagram of point C in the middle.

[0029] In the figure: 1. cabinet; 2. operating table; 3. mother block; 21. top plate assembly; 211. ring block; 212. electric telescopic rod; 213. pressure plate; 214. sub-block; 215. U-shaped frame; 216. straight rod; 217. disc; 22. limit assembly; 221. square plate; 222. straight frame; 223. arc spring; 4. anti-deformation device; 41. long rod; 42. horizontal plate; 43. sliding rod; 44. long plate; 45. spring; 46. rubber strip; 47. connecting plate; 48. L-shaped rod; 49. baffle; 5. heating device; 51. rack rod; 52. square shell; 53. resistance heating rod; 54. heat conducting plate; 55. round block; 56. L-shaped copper tube; 57. strip plate. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] See also Figure 1-Figure 8 One embodiment of the present invention is: a metal sheet stamping device for mechanical engineering, comprising a cabinet 1, an operating table 2 is fixedly installed on the top of the front of the cabinet 1, a mother block 3 is fixedly installed in the middle of the top surface of the cabinet 1, a round opening is opened in the middle of the top surface of the cabinet 1, a round opening is opened at the bottom end of the mother block 3, the round opening of the mother block 3 is aligned with the round opening of the cabinet 1, and two buttons are opened on the top surface of the operating table 2;

[0032] A top plate assembly 21 is provided on the left and right sides of the inner wall of the cabinet 1, and the top plate assembly 21 includes four ring blocks 211, and the four ring blocks 211 are fixedly installed on the inner wall of the cabinet 1 in groups of two. Two electric telescopic rods 212 are fixedly installed on the inner walls of the four ring blocks 211, respectively. The telescopic ends of the two electric telescopic rods 212 are respectively penetrated and slidably installed on the inner top of the cabinet 1, and a pressing plate 213 is fixed on the top surface of the telescopic end of the two electric telescopic rods 212, and a sub-block 214 is fixedly installed in the middle of the bottom surface of the pressing plate 213, and the sub-block 214 is located above the mother block 3, and a U-shaped frame 215 is fixed on the top of the outer wall of the telescopic end of the two electric telescopic rods 212, and the outer wall of the U-shaped frame 215 is penetrated and slidably connected with the inner top of the cabinet 1, and a straight rod 216 is fixed on the inner bottom end of the U-shaped frame 215, and a disc 21 is fixed on the top surface of the straight rod 216 7. The disc 217 is located inside the circular opening of the mother block 3. The bottom surfaces of the two electric telescopic rods 212 are in contact with the inner bottom end of the cabinet 1. The telescopic end of the electric telescopic rod 212 drives the pressure plate 213 to move downward, and the pressure plate 213 drives the sub-block 214 to move downward. Under the action of the extrusion force, the metal sheet is punched into the mother block 3 by the sub-block 214, so that the metal sheet is punched and formed. When the stamping of the metal sheet is completed, the telescopic end of the electric telescopic rod 212 drives the U-shaped frame 215 to move upward, and the U-shaped frame 215 drives the straight rod 216 to move upward, and the straight rod 216 drives the disc 217 to move upward. The disc 217 moves upward against the formed metal sheet, so that the formed metal sheet is separated from the mother block 3, so as to avoid the metal sheet being stuck in the mother block 3 when the stamping device is stamping the metal sheet for mechanical engineering, causing inconvenience in the equipment stamping and taking out.

[0033] A limit assembly 22 is provided at the top of the inner wall of the U-shaped frame 215. The limit assembly 22 includes a square plate 221. Two square plates 221 penetrate and are fixed on the top of the inner wall of the U-shaped frame 215. Two straight frames 222 are fixed on the top surfaces of the two square plates 221 respectively. The top surfaces of the two straight frames 222 are fixedly connected to the bottom surface of the pressing plate 213. The two straight frames 222 are provided with circular holes on the front and back sides. Two arc-shaped spring pieces 223 are fixed on the bottom surfaces of the two square plates 221 respectively. The two square plates 221 are respectively located at the top of the left and right sides of the sub-block 214. When the arc-shaped spring piece 223 moves downward, the arc-shaped spring piece 223 contacts the metal sheet. Under the action of the extrusion force, the arc-shaped spring piece 223 is deformed. Under the elastic force of the arc-shaped spring piece 223, the sub-block 214 will not over-extrude the metal sheet, so as to avoid excessive extrusion of the metal sheet by the stamping device when stamping the metal sheet, causing the metal sheet to be broken and damaged.

[0034] When in use, the cabinet 1 supports the operating table 2, and the cabinet 1 supports the mother block 3. The staff places the metal sheet parts for mechanical engineering on the mother block 3. Since the metal sheet parts for mechanical engineering are easily stuck in the mother block 3 during stamping, the staff presses the button on the operating table 2 with both hands to start the electric telescopic rod 212 on the ring block 211, and the telescopic end of the electric telescopic rod 212 begins to move downward, and the telescopic end of the electric telescopic rod 212 slides downward in the cabinet 1, and the telescopic end of the electric telescopic rod 212 drives the pressing plate 213 to move downward, and the pressing plate 213 drives the sub-block 214 to move downward. At the same time, the telescopic end of the electric telescopic rod 212 drives the U-shaped frame 215 to move downward, and the U-shaped frame 215 slides downward on the cabinet 1, and the U-shaped frame 215 drives the straight rod 216 to move downward, and the straight rod 216 drives the disc 217 to move downward, and the sub-block 214 moves downward. During the movement, the sub-block 214 contacts the metal sheet, and under the action of the extrusion force, the sub-block 214 moves downward against the metal sheet, and the metal sheet is punched into the mother block 3 by the sub-block 214, so that the metal sheet is punched and formed. When the stamping of the metal sheet is completed, the telescopic end of the electric telescopic rod 212 starts to move upward, and the telescopic end of the electric telescopic rod 212 slides upward in the cabinet 1, and the telescopic end of the electric telescopic rod 212 drives the U-shaped frame 215 to move upward, and the U-shaped frame 215 drives the straight rod 216 to move upward, and the straight rod 216 drives the disc 217 to move upward, and the disc 217 moves upward against the formed metal sheet, so that the formed metal sheet is separated from the mother block 3, so as to prevent the metal sheet from being stuck in the mother block 3 when the equipment is in use, thereby avoiding the problem that the metal sheet is stuck in the mother block 3 when the stamping device is stamping the metal sheet for mechanical engineering, causing inconvenience in the equipment stamping and taking out.

[0035] When the U-shaped frame 215 slides downward on the cabinet 1, the U-shaped frame 215 drives the square plate 221 to move downward, the square plate 221 drives the straight frame 222 to move downward, and the square plate 221 drives the arc spring piece 223 to move downward. In the process of the arc spring piece 223 moving downward, the arc spring piece 223 contacts the metal sheet. Under the action of the extrusion force, the arc spring piece 223 is deformed. Under the elastic force of the arc spring piece 223, the sub-block 214 will not over-extrude the metal sheet, preventing the sub-block 214 from over-extruding the metal sheet when the equipment is in use, thereby avoiding the problem of the metal sheet being broken or damaged due to the sub-block 214 over-extruding the metal sheet when the stamping device is stamping the metal sheet.

[0036] See also Figure 1-Figure 8 On the basis of the above embodiment, another embodiment of the present invention further includes an anti-deformation device 4 and a temperature rising device 5, wherein the inner wall of the circular hole of the two straight frames 222 is provided with an anti-deformation device 4, and the anti-deformation device 4 includes two long rods 41, two horizontal plates 42, four sliding rods 43, two long plates 44, a plurality of springs 45 and two rubber strips 46, the two long rods 41 are respectively fixed on the inner wall of the circular hole of the two straight frames 222, the two horizontal plates 42 are respectively fixed on the front and back sides of the two long rods 41, sliding holes are respectively opened on both sides of the top surfaces of the two horizontal plates 42, the four sliding rods 43 are respectively slidably installed on the inner walls of the sliding holes of the two horizontal plates 42, the two long plates 44 are respectively fixed on the top surfaces of the four sliding rods 43, the plurality of springs 45 are respectively fixed on the bottom surfaces of the two long plates 44, and the ends of the plurality of springs 45 away from the two long plates 44 are connected to the two The outer wall of the cross plate 42 is fixedly connected, and the two rubber strips 46 are respectively fixed on the bottom surfaces of the four sliding rods 43. Two circular openings are respectively arranged on the sides of the two cross plates 42 away from each other. The two long plates 44 are located at the top of the front and back sides of the sub-block 214, and the two rubber strips 46 are located at the front and back sides of the sub-block 214. When the rubber strips 46 move downward, the rubber strips 46 contact the metal sheet. Under the action of the extrusion force, the sliding rod 43 slides upward in the sliding hole of the cross plate 42, and the sliding rod 43 drives the long plate 44 to move upward. The long plate 44 pulls the spring 45. Under the elastic force of the spring 45, the rubber strips 46 are tightly pressed against the metal sheet, so that when the metal sheet is stamped by the sub-block 214, the rubber strips 46 are pressed on the metal sheet, so as to avoid large deformation of the metal sheet when the stamping device is stamping the metal sheet, resulting in non-standard forming of the metal sheet.

[0037] The anti-deformation device 4 also includes four connecting plates 47, four L-shaped rods 48 and two baffles 49. The four connecting plates 47 are respectively fixed on the side of the two horizontal plates 42 away from each other, the four L-shaped rods 48 are respectively fixed on the side of the four connecting plates 47 away from each other, the two baffles 49 are respectively fixed on one end of the four L-shaped rods 48 away from the four connecting plates 47, and the two baffles 49 are respectively located on the side of the two long plates 44 away from each other. When the baffles 49 move downward, the baffles 49 prevent people from contacting the springs 45, so as to avoid injuries to people caused by the staff contacting the springs 45 when the stamping device is stamping metal sheets.

[0038] The outer wall of the anti-deformation device 4 is provided with a heating device 5, which includes four racks 51, two square shells 52, two resistance heating rods 53 and two heat conducting plates 54. The four racks 51 are respectively fixed on the four L-shaped rods 48, and the four racks 51 are respectively located inside the circular mouths of the two horizontal plates 42. The two square shells 52 are respectively fixed on the ends of the four racks 51 away from the four L-shaped rods 48. The two resistance heating rods 53 are respectively fixed on the inner top ends of the two square shells 52, and the two heat conducting plates 54 are respectively fixed on the bottom of the inner walls of the two square shells 52. The two heat conducting plates 54 are respectively located below the two resistance heating rods 53. The resistance heating rods 53 transfer heat to the heat conducting plates 54. When the heat conducting plates 54 move downward, the heat conducting plates 54 transfer heat to the metal sheet, so that when the equipment is used in winter, the sub-block 214 is easier to stamp the metal sheet, so as to avoid the metal sheet being easily stamped and broken when the stamping device stamps the metal sheet in winter, resulting in poor stamping effect.

[0039] The heating device 5 also includes four round blocks 55, four L-shaped copper tubes 56 and two strips 57. The four round blocks 55 are fixedly installed in groups of two at the bottom of the two heat conducting plates 54, the four L-shaped copper tubes 56 are respectively fixed in the middle of the bottom surface of the four round blocks 55, and the two strips 57 are respectively fixed at one end of the four L-shaped copper tubes 56 away from the four round blocks 55. The two strips 57 are located above the left and right sides of the sub-block 214. When the strips 57 move downward, the heat conducting plate 54 transfers heat to the round blocks 55, the round blocks 55 transfer heat to the L-shaped copper tubes 56, the L-shaped copper tubes 56 transfer heat to the strips 57, and the strips 57 transfer heat to the sub-block 214, so that the sub-block 214 can maintain a constant temperature to stamp metal sheets, so as to avoid the metal sheets being stuck on the sub-block 214 when the stamping device stamps metal sheets at low temperature in winter.

[0040] When the square plate 221 drives the straight frame 222 to move downward, the straight frame 222 drives the long rod 41 to move downward, the long rod 41 drives the cross plate 42 to move downward, the cross plate 42 drives the spring 45 to move downward, the spring 45 drives the long plate 44 to move downward, the long plate 44 drives the sliding rod 43 to move downward, the sliding rod 43 drives the rubber strip 46 to move downward, and in the process of the rubber strip 46 moving downward, the rubber strip 46 contacts the metal sheet part, and under the action of the extrusion force, the sliding rod 43 slides upward in the sliding hole of the cross plate 42, the sliding rod 43 drives the long plate 44 to move upward, the long plate 44 pulls the spring 45, and under the elastic force of the spring 45, the rubber strip 46 is tightly pressed against the metal sheet part, so that when the metal sheet part is stamped by the quilt block 214, the rubber strip 46 is pressed on the metal sheet part, so as to prevent the metal sheet part from being greatly deformed during stamping when the equipment is in use, thereby avoiding the problem of non-standard forming of the metal sheet part caused by the large deformation of the metal sheet part when the stamping device is stamping the metal sheet part.

[0041] While the long rod 41 drives the cross plate 42 to move downward, the cross plate 42 drives the connecting plate 47 to move downward, the connecting plate 47 drives the L-shaped rod 48 to move downward, and the L-shaped rod 48 drives the baffle 49 to move downward. During the downward movement of the baffle 49, the baffle 49 blocks people from contacting the spring 45, preventing the staff from contacting the spring 45 when the equipment is in use, thereby avoiding the problem of staff contacting the spring 45 when the stamping device is stamping metal sheets and causing personal injury.

[0042] While the connecting plate 47 drives the L-shaped rod 48 to move downward, the L-shaped rod 48 drives the frame rod 51 to move downward, the frame rod 51 drives the square shell 52 to move downward, the square shell 52 drives the resistance heating rod 53 to move downward, the square shell 52 drives the heat conducting plate 54 to move downward, the staff starts the resistance heating rod 53 in the square shell 52, the resistance heating rod 53 begins to heat up, the resistance heating rod 53 transfers heat to the heat conducting plate 54, and in the process of the heat conducting plate 54 moving downward, the heat conducting plate 54 transfers heat to the metal sheet, so that when the equipment is used in winter, the sub-block 214 can more easily stamp the metal sheet to prevent the metal sheet from being easily stamped and broken when the equipment is used in winter, thereby avoiding the problem of poor stamping effect caused by the metal sheet being easily stamped and broken when the stamping device stamps the metal sheet in winter.

[0043] While the square shell 52 drives the heat conducting plate 54 to move downward, the heat conducting plate 54 drives the round block 55 to move downward, the round block 55 drives the L-shaped copper tube 56 to move downward, and the L-shaped copper tube 56 drives the strip 57 to move downward. When the strip 57 moves downward, the heat conducting plate 54 transfers heat to the round block 55, the round block 55 transfers heat to the L-shaped copper tube 56, the L-shaped copper tube 56 transfers heat to the strip 57, and the strip 57 transfers heat to the sub-block 214, so that the sub-block 214 can maintain a constant temperature to stamp metal sheets, preventing the sub-block 214 from stamping metal sheets at low temperature when the equipment is in use, thereby avoiding the problem of the metal sheets being stuck on the sub-block 214 due to the sub-block 214 stamping metal sheets at low temperature when the stamping device stamps metal sheets in winter.

[0044] 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 metal sheet stamping device for mechanical engineering, comprising a cabinet, an operating table is fixedly installed on the top of the front of the cabinet, and a mother block is fixedly installed in the middle of the top of the cabinet, characterized in that: A circular opening is provided in the middle of the top surface of the cabinet, a circular opening is provided at the bottom end of the inner part of the mother block, the circular opening of the mother block is aligned with the circular opening of the cabinet, and top plate components are provided on the left and right sides of the inner wall of the cabinet; The top plate assembly includes four ring blocks, and the four ring blocks are fixedly installed on the inner wall of the cabinet in groups of two. Two electric telescopic rods are fixedly installed on the inner walls of the four ring blocks respectively. The telescopic ends of the two electric telescopic rods are respectively penetrated and slidably installed on the inner top of the cabinet. A pressure plate is fixed on the top surface of the telescopic ends of the two electric telescopic rods, and a sub-block is fixedly installed in the middle of the bottom surface of the pressure plate. The sub-block is located above the mother block. A U-shaped frame is fixed on the top of the outer wall of the telescopic ends of the two electric telescopic rods. The outer wall of the U-shaped frame penetrates and is slidably connected to the inner top of the cabinet. A straight rod is fixed on the inner bottom end of the U-shaped frame, and a disc is fixed on the top surface of the straight rod. The disc is located inside the circular mouth of the mother block. A limiting component is arranged on the top of the inner wall of the U-shaped frame; The limiting assembly includes a square plate, two of the square plates penetrate and are fixed to the top of the inner wall of the U-shaped frame, two straight frames are respectively fixed to the top surfaces of the two square plates, the top surfaces of the two straight frames are fixedly connected to the bottom surface of the pressing plate, the two straight frames are provided with circular holes on the front and back surfaces, and two arc-shaped spring sheets are respectively fixed to the bottom surfaces of the two square plates; The inner walls of the circular holes of the two straight frames are provided with anti-deformation devices, and the outer walls of the anti-deformation devices are provided with heating devices; The anti-deformation device includes two long rods, two horizontal plates, four sliding rods, two long plates, a number of springs and two rubber strips. The two long rods are respectively fixed on the inner walls of the circular holes of the two straight frames, the two horizontal plates are respectively fixed on the front and back sides of the two long rods, sliding holes are respectively opened on both sides of the top surfaces of the two horizontal plates, the four sliding rods are respectively slidably installed on the inner walls of the sliding holes of the two horizontal plates, the two long plates are respectively fixed on the top surfaces of the four sliding rods, the several springs are respectively fixed on the bottom surfaces of the two long plates, the ends of the several springs away from the two long plates are fixedly connected to the outer walls of the two horizontal plates, and the two rubber strips are respectively fixed on the bottom surfaces of the four sliding rods.

2. A metal sheet punching device for mechanical engineering according to claim 1, characterized in that: Two buttons are arranged on the top surface of the operating table, the bottom surfaces of the two electric telescopic rods are in contact with the inner bottom end of the cabinet, and the two square plates are respectively located on the top of the left and right sides of the sub-block.

3. A metal sheet punching device for mechanical engineering according to claim 2, characterized in that: The anti-deformation device also includes four connecting plates, four L-shaped rods and two baffles. The four connecting plates are respectively fixed on the side of the two cross plates away from each other, the four L-shaped rods are respectively fixed on the side of the four connecting plates away from each other, and the two baffles are respectively fixed on one end of the four L-shaped rods away from the four connecting plates.

4. A metal sheet punching device for mechanical engineering according to claim 3, characterized in that: Two round openings are respectively arranged on the side away from each other of the two horizontal plates, the two long plates are located at the top of the front and back sides of the sub-block, the two rubber strips are located at the bottom of the front and back sides of the sub-block, and the two baffles are respectively located on the side away from each other of the two long plates.

5. A metal sheet punching device for mechanical engineering according to claim 4, characterized in that: The heating device includes four racks, two square shells, two resistance heating rods and two heat conducting plates. The four racks are respectively fixed on four L-shaped rods, and the four racks are respectively located inside the circular openings of the two horizontal plates. The two square shells are respectively fixed on one end of the four racks away from the four L-shaped rods, the two resistance heating rods are respectively fixedly installed on the inner top ends of the two square shells, and the two heat conducting plates are respectively fixed on the bottom of the inner walls of the two square shells.

6. A metal sheet punching device for mechanical engineering according to claim 5, characterized in that: The heating device also includes four round blocks, four L-shaped copper tubes and two strips. The four round blocks are fixedly installed in groups of two at the bottom of the two heat conducting plates, the four L-shaped copper tubes are fixed in the middle of the bottom surfaces of the four round blocks, and the two strips are fixed at one end of the four L-shaped copper tubes away from the four round blocks.

7. A metal sheet punching device for mechanical engineering according to claim 6, characterized in that: The two heat conducting plates are respectively located below the two resistance heating rods, and the two strip plates are located above the left and right sides of the sub-block.

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