Multi-station electric punching machine

Abstract

The invention relates to the field of punching machines, in particular to a multi-station electric punching machine which comprises a base, an electric push rod is fixedly mounted on the base, a punching head is fixedly mounted at one end of the electric push rod, a punching hole allowing the punching head to penetrate through and press downwards is formed in the base, a polishing hole is formed in the base, and a polishing wheel is mounted in the base. The diameter of the polishing hole is larger than that of the polishing wheel, and a driving assembly is installed in the base. The electric punching machine operates to push the punching head below to press downwards for punching, then the driving assembly below is pushed to operate, the driving assembly drives the grinding wheel to rotate and move upwards, the grinding wheel penetrates through the grinding hole, burrs generated after punching is completed are ground through rotation of the grinding wheel, and the punching efficiency is improved. Burrs generated by punching are synchronously polished through the downward pressing pushing force of the punching head, the punching efficiency of the punching machine is guaranteed, and meanwhile the burrs generated after punching are polished, so that the product quality is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of punching machines, in particular to a multi-station electric punching machine. Background Art

[0002] The punching machine is a mechanical device that installs the raw materials, drives the power mechanism, and acts on the materials with the punching die to complete the punching. It can also perform operations such as sheet processing, stamping, molding, embossing, etc. to force metal into the die.

[0003] The electric punching machine is an automated device driven by a motor to process holes in materials such as stainless steel, anti-theft nets, and aluminum alloys. It can replace and install punching dies of different specifications according to actual needs to achieve automatic punching. However, the size of the gap of the punching die has an important influence on the generation of burrs. Too large or too small a gap may cause uneven shear force on the material during the stamping process, thereby generating burrs. At the same time, for some tough materials such as iron sheets, the better the toughness, the stronger the deformation ability during the stamping process, resulting in the edge material not being easy to be completely cut off, thereby generating burrs. Therefore, the patent application with patent publication number CN221454026U provides a steel plate punching and grinding device. The burrs on both sides of the steel plate are ground. At the same time, since the grinding head is semicircular, it can adapt to holes of different sizes, with high grinding efficiency and good grinding effect. However, for the electric punching machine, it only needs to punch some thin iron sheets. The above equipment drives the grinding head to grind the steel plate through the driving motor, and the equipment cost is relatively high. For the iron sheet, the burrs can be easily ground. When using an electric punching machine with a driving motor to drive the grinding head, the production cost will increase, and using manual grinding on the punching of the iron sheet will lead to a decrease in production efficiency.

[0004] Therefore, a multi-station electric punching machine is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a multi-station electric punching machine to solve the problem that the burrs on the iron sheet can be easily polished away. When using an electric punching machine with a driving motor to drive the grinding head, it will lead to increased production costs, and using manual labor to polish the punching holes of the iron sheet will lead to a decrease in production efficiency.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A multi-station electric punching machine comprises a base, an electric push rod is fixedly mounted on the base, a punching head is fixedly mounted on one end of the electric push rod, a punching hole is opened on the base for the punching head to penetrate and press down, a grinding hole is provided on the base, a grinding wheel is installed in the base, the grinding hole is larger than the diameter of the grinding wheel, a driving assembly is installed in the base, the grinding wheel is installed on the driving assembly, one side of the driving assembly is connected to the punching head, when the electric punching machine is running, the driving assembly drives the grinding wheel to rotate and move upward through the extrusion of the electric push rod, grinds the burrs generated at the punching hole, and drives the grinding wheel to move down and back to its original position after the extrusion of the electric push rod is lost.

[0008] The electric push rod pushes the punch head on its active end downward, so that the punch head can squeeze the iron sheet below. Continuous squeezing makes a round hole appear on the iron sheet, and the downward punch head will pass through the punching hole below. Because a driving assembly is provided below the punching hole, when the electric push rod pushes the punch head below to press down for punching, the punch head continues to push the driving assembly below to operate after punching. The driving assembly drives the grinding wheel to rotate and move upward, so that the grinding wheel passes through the grinding hole and moves up to press against the iron sheet. The burrs generated after punching are polished by the rotation of the grinding wheel, and the burrs generated after punching are polished by the thrust generated when punching the iron sheet. While reducing the overall cost and subsequent maintenance cost of the punching machine, the punching efficiency of the punching machine is guaranteed.

[0009] Preferably, the driving assembly includes a piston cylinder, a first compression spring, a piston rod, a sleeve, a second compression spring, a cylinder, and an impeller. The piston cylinder is fixedly installed in the base, the first compression spring is installed in the piston cylinder, a piston rod is provided on one side of the piston cylinder, a sleeve is sleeved on the movable end of the piston rod, a second compression spring is placed in the sleeve, the two ends of the second compression spring are respectively abutted against the movable end of the piston rod and the inner wall of the sleeve, a cylinder is fixedly installed at one end of the sleeve, an impeller is rotatably connected in the cylinder, the output shaft of the impeller extends outside the cylinder and is connected to the grinding wheel, an air inlet and an air outlet are opened on the side wall of the cylinder, an air inlet part is installed between the air inlet, the piston rod and the piston cylinder, and the air inlet part introduces the gas in the piston cylinder into the piston rod and the cylinder.

[0010] The thrust generated by the downward pressing of the punch head drives the grinding wheel to rotate and grind the burrs. At the same time, the gas in the piston cylinder is constant, and the second compression spring in the sleeve can continuously move upward to drive the grinding wheel to rise and tightly press against the iron sheet, so that the grinding wheel can rotate and grind closely against the iron sheet, and compensate for the wear and tear of the grinding wheel caused by long-term use, so as to avoid the surface frosting falling off of the grinding wheel after long-term use, resulting in the inability to grind the burrs. At the same time, after a certain amount of gas pushes the grinding wheel to rise, the remaining gas can just drive the grinding wheel to grind the burrs flat, and will not move further to deeply grind the surface of the iron sheet, so as to avoid the continuous rotation and rise of the grinding wheel causing grinding grooves on the surface of the iron sheet.

[0011] Preferably, the air intake member includes a third compression spring, a first ventilation pipe, a second ventilation pipe, a first one-way valve, and a second one-way valve. The third compression spring is installed in the piston rod, and the third compression spring is sleeved on the movable end of the piston rod. A first ventilation pipe is opened at the bottom of the piston rod, and the other end of the first ventilation pipe is connected to the piston cylinder. A second ventilation pipe is fixedly installed on the side wall of the piston rod, and the other end of the second ventilation pipe is connected to the air inlet. The first one-way valve is installed on the second ventilation pipe, and a second one-way valve is installed on one side of the piston cylinder.

[0012] When the punch head moves downward to squeeze the piston cylinder below, the gas in the piston cylinder will be continuously discharged, and the second one-way valve installed on one side limits the gas outlet of the piston cylinder, so the gas in the piston rod can only be discharged through the first vent pipe on one side and discharged into the piston rod through the first vent pipe, so the movable end of the piston rod will move upward at this time, and because the second vent pipe is fixed on the side wall of the piston rod, when the gas wants to be discharged through the second vent pipe, it is necessary to push the piston rod up to the specified position first. When it rises to the specified position, the gas will be discharged into the cylinder through the second vent pipe, and push the impeller in the cylinder to rotate. By installing vents at different positions, the piston rod is first telescoped to avoid gas passing through the piston rod directly into the cylinder or not pushing the grinding wheel to move to the specified position, ensuring that the telescopic rod can accurately push the grinding wheel up for grinding, and ensuring that the burrs generated by the punching machine can be polished away without omissions.

[0013] Preferably, a long rod is provided in the base, one end of which is installed with the inner wall of the base through a hinge seat, a sliding groove is provided on the long rod, a slider is slidably connected in the sliding groove, one side of the slider is connected to the movable end of the piston cylinder by a hinge, and the piston cylinder is arranged on a side close to the hinge seat.

[0014] Because the telescopic rod needs to rise to the specified position first, the grinding wheel needs to be against the position to be ground before rotational grinding can be carried out. Therefore, a certain pressure is needed to push the impeller to rotate to avoid the grinding wheel being stuck in place and unable to rotate for grinding. Therefore, a long rod hinged to the inner wall of the base is used to push one end of the long rod downward, so that a lever structure is generated between it and the piston cylinder. The lever structure increases the thrust generated when the punching rod is pressed downward, so that the grinding wheel can completely overcome the friction at the burr for rotational grinding.

[0015] Preferably, a rotating rod is fixedly installed on the bottom of the grinding wheel, a driving ring is fixedly installed on the cylinder, a gear ring is fixedly installed on the inner wall of the driving ring, a driving gear is rotatably connected inside the driving ring, the driving gear is fixedly installed with the rotating shaft of the impeller, a transmission gear meshing with the gear ring and the driving gear is rotatably installed inside the driving ring, and the diameter of the transmission gear is smaller than the diameter of the driving gear, the transmission gear is fixedly installed on the rotating rod, a protective plate is rotatably installed on the driving ring, and the rotating rod passes through the protective plate and is connected to the grinding wheel.

[0016] Preferably, a lower pressure plate is provided directly above the grinding hole, and a push plate is slidably connected to the lower pressure plate, one end of the push plate is fixedly installed with the electric push rod, a pressing spring is installed between the push plate and the lower pressure plate, a lifting groove is provided on the base, a lifting block is slidably installed in the lifting groove, the grinding hole is arranged on the lifting block, a U-shaped air guide groove is provided on the base, and pushing columns are slidably connected to both sides of the U-shaped air guide groove when powered, and the pushing column is fixedly installed with the lifting block on the side close to the lifting block.

[0017] When the impeller rotates, the grinding wheel will rotate. Of course, the grinding wheel can be installed on the impeller shaft. At this time, the impeller can drive the grinding wheel to rotate and grind. However, the burrs generated by the punching machine when punching holes in the iron sheet will only be formed at the edges of the holes. Once the grinding wheel is rotated and polished at the center, the grinding wheel will use the same position for a long time to polish the burrs. After a period of time, the sand at the position where the grinding wheel polished the burrs will be scraped off. However, the sand at other positions of the grinding wheel remains intact. If the grinding wheel is replaced at this time, it will be a waste of resources. Therefore, by rotating in a circle, the grinding wheel can be evenly subjected to the friction generated by the burrs, thereby increasing the service life of the equipment.

[0018] Preferably, a tray is hinged at one end of the long rod, a tilting block is fixedly installed in the base, the tilting block is arranged on a side close to the tray, and the center of gravity of the tray is biased toward the side close to the tilting block.

[0019] The punching machine will continuously punch out waste when in use. If the waste is not cleared, it will cause waste accumulation, affecting the downward swing of the long rod and making the equipment unable to operate normally. Therefore, by installing a pallet, the punch head pushes the waste against the pallet when punching downward, so that the waste is placed on the pallet. When the punch head rises back to its original position, there is no abutment of the punch head, and the waste is discharged by the tilting block when the long rod is in its original position.

[0020] Preferably, a protective cover is fixedly mounted on the driving ring, a rubber ring is fixedly mounted on one end of the protective cover away from the driving ring, and the outer surface of the protective plate is arranged in a fan-blade shape.

[0021] The grinding wheel will generate a small amount of dust when grinding. Although the amount of dust is light, it will still cause the connection of the shaft. Because it is metal dust, it will cause wear of the shaft at the connection, seriously affecting the service life of the equipment. Therefore, the grinding area is wrapped with a protective cover, and the protective plate with a fan-shaped surface will rotate with the grinding wheel to absorb the generated dust and further reduce metal dust.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The electric punching machine pushes the punching head below to press down to punch, and then pushes the driving assembly below to operate. The driving assembly drives the grinding wheel to rotate and move upward, so that the grinding wheel passes through the grinding hole. The burrs generated after punching are polished by the rotation of the grinding wheel. The burrs generated by punching are polished synchronously by the downward driving force of the punching head. While ensuring the punching efficiency of the punching machine, the burrs generated after punching are polished to ensure product quality.

[0024] 2. The grinding wheel is driven to rotate by the rotation of the transmission gear. At the same time, because the other side of the transmission gear is meshed with the gear ring, the transmission gear will also rotate around the middle driving gear as a whole. The grinding wheel can be evenly subjected to the friction force generated by the burrs through circular rotation and grinding, so as to avoid the surface frosting and shedding of the same part of the grinding wheel after long-term use, resulting in the inability to grind the burrs, thereby ensuring the punching efficiency of the punching machine.

[0025] 3. The lower pressure plate presses against the push column below, and by pushing the push column on one side downward, the push column on the other side of the U-shaped air guide groove rises. The rise causes the push column to drive the lifting block to move upward, thereby supporting the upper iron sheet. The lifting block below and the pressing of the upper lower pressure plate clamp the middle iron sheet at the same time, so that the grinding wheel below will not shake during grinding, thereby ensuring the quality of the product after punching by the punching machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the internal structure of the base in the present invention;

[0028] Figure 3 It is a schematic diagram of the structure of the grinding wheel in the present invention;

[0029] Figure 4 It is a schematic diagram of the internal structure of the piston cylinder in the present invention;

[0030] Figure 5 It is a schematic diagram of the three-dimensional structure of the piston rod in the present invention;

[0031] Figure 6 Schematic diagram of the internal structure of the driving ring in the present invention;

[0032] Figure 7 It is a schematic diagram of the structure of the U-shaped air guide groove in the present invention;

[0033] Figure 8 It is a schematic structural diagram of the push column in the present invention.

[0034] In the figure: 1, base; 2, electric push rod; 3, punching head; 4, punching hole; 5, grinding hole; 6, push plate; 7, lower pressure plate; 8, pressing spring; 9, push column; 10, tilting block; 11, tray; 12, long rod; 13, piston cylinder; 14, piston rod; 15, protective cover; 16, grinding wheel; 17, rubber ring; 18, second ventilation pipe; 19, first one-way valve; 20, first ventilation pipe; 21, second One-way valve; 22. slide groove; 23. slider; 24. first compression spring; 25. third compression spring; 26. sleeve; 27. second compression spring; 28. cylinder; 29. ​​impeller; 30. drive ring; 31. air outlet; 32. air inlet; 33. protective plate; 34. gear ring; 35. drive gear; 36. transmission gear; 37. lifting block; 38. U-shaped air guide groove; 39. hinge seat; 40. rotating rod. DETAILED DESCRIPTION

[0035] See also Figures 1 to 8 The present invention provides a multi-station electric punching machine, and the technical solution is as follows:

[0036] A multi-station electric punching machine includes a base 1, an electric push rod 2 is fixedly installed on the base 1, a punch head 3 is fixedly installed at one end of the electric push rod 2, a punching hole 4 is opened on the base 1 for the punch head 3 to pass through and press down, a grinding hole 5 is opened on the base 1, a grinding wheel 16 is installed in the base 1, the grinding hole 5 is larger than the diameter of the grinding wheel 16, a driving assembly is installed in the base 1, the grinding wheel 16 is installed on the driving assembly, and one side of the driving assembly is connected to the punch head 3.

[0037] When the material is punched continuously, the feeding equipment on one side will push the punched material to the bottom of the punching head 3, and set the position to be punched to the top of the punching hole 4. At this time, the electric push rod 2 pushes the punching head 3 on its active end to move downward, so that the punching head 3 can squeeze the iron sheet below. Through continuous squeezing, a round hole appears on the iron sheet, and the downward pressed punching head 3 will pass through the punching hole 4 below. Because a driving component is provided below the punching hole 4, when the electric push rod 2 pushes the punching head 3 below to press down for punching, the punching head 3 continues to push the driving component below to operate after the punching is completed, and the driving component drives the grinding wheel 16 to rotate The grinding wheel 16 rotates and moves upward, so that the grinding wheel 16 passes through the grinding hole 5 and moves up to press against the iron sheet. The burrs generated after punching are ground by the rotation of the grinding wheel 16. When the punching head 3 completes the punching, the electric push rod 2 drives the punching head 3 to rise back to its original position. At this time, the driving component is not subjected to pressure, so it drives the grinding wheel 16 to move down back to its original position. The thrust generated when the punching head 3 punches downward drives the grinding wheel 16 to rotate, and the burrs generated after punching are ground. The burrs generated after punching are ground by the thrust generated when punching the iron sheet. While reducing the overall cost of the punching machine and the subsequent maintenance cost, the punching efficiency of the punching machine is guaranteed.

[0038] The driving assembly includes a piston cylinder 13, a first compression spring 24, a piston rod 14, a sleeve 26, a second compression spring 27, a cylinder 28, and an impeller 29. The piston cylinder 13 is fixedly installed in the base 1, and the first compression spring 24 is installed in the piston cylinder 13. A piston rod 14 is provided on one side of the piston cylinder 13. A sleeve 26 is sleeved on the movable end of the piston rod 14, and a second compression spring 27 is placed in the sleeve 26. The two ends of the second compression spring 27 are respectively abutted against the movable end of the piston rod 14 and the inner wall of the sleeve 26. A cylinder 28 is fixedly installed at one end of the sleeve 26. An impeller 29 is rotatably connected in the cylinder 28. The output shaft of the impeller 29 extends to the outside of the cylinder 28 and is connected to the grinding wheel 16. An air inlet 32 ​​and an air outlet 31 are opened on the side wall of the cylinder 28. An air inlet member is installed between the air inlet 32, the piston rod 14 and the piston cylinder 13. The air inlet member introduces the gas in the piston cylinder 13 into the piston rod 14 and the cylinder 28.

[0039] When the electric push rod 2 pushes the punch head 3 on its movable end to move downward for punching, the punch head 3 moving downward on the upper side will move downward to squeeze the piston cylinder 13 below, so that the gas in the piston cylinder 13 is pushed into the piston rod 14 through the air inlet, so that the movable end of the piston rod 14 will push the sleeve 26 upward through the second compression spring 27 of the sleeve 26, and the upward movement of the sleeve 26 drives the cylinder 28 fixed thereon to move, so that the grinding wheel 16 on the cylinder 28 continuously moves upward to approach the burr position generated by the punching hole 4. At the same time, the gas in the piston cylinder 13 will also enter the air inlet 32 ​​through the air inlet 32, and enter the sleeve 26 through the air inlet 32. Because there is gas constantly entering, the gas needs to be discharged from the air outlet 31 if it wants to be discharged from the sleeve 26, and the flow of air will drive the impeller 29 in the sleeve 26 to rotate, and the rotating impeller 29 drives The grinding wheel 16 installed on its rotating shaft rotates, and the burrs are ground by the rotation of the grinding wheel 16. The thrust generated when the punch head 3 punches downward drives the grinding wheel 16 to rotate and grind the burrs. At the same time, the gas in the piston cylinder 13 is constant, and the second compression spring 27 in the sleeve 26 can continuously move upward to drive the grinding wheel 16 to rise and tightly press against the iron sheet, so that the grinding wheel 16 can be tightly against the iron sheet for rotation and grinding. When the grinding wheel 16 produces a certain amount of wear due to long-term use, compensation is performed to avoid the grinding wheel 16. After long-term use, the surface of the grinding wheel 16 is not frosted and falls off, resulting in the inability to grind the burrs. At the same time, after a certain amount of gas pushes the grinding wheel 16 to rise, the remaining gas can just drive the grinding wheel 16 to grind the burrs flat, and will not move further to deeply grind the surface of the iron sheet, thereby avoiding the grinding wheel 16 constantly rotating and rising to cause grinding grooves to appear on the surface of the iron sheet.

[0040] The air intake component includes a third compression spring 25, a first ventilation pipe 20, a second ventilation pipe 18, a first one-way valve 19, and a second one-way valve 21. The third compression spring 25 is installed in the piston rod 14, and the third compression spring 25 is sleeved on the movable end of the piston rod 14. A first ventilation pipe 20 is opened at the bottom of the piston rod 14, and the other end of the first ventilation pipe 20 is connected to the piston cylinder 13. A second ventilation pipe 18 is fixedly installed on the side wall of the piston rod 14, and the other end of the second ventilation pipe 18 is connected to the air inlet 32. The first one-way valve 19 is installed on the second ventilation pipe 18, and a second one-way valve 21 is installed on one side of the piston cylinder 13.

[0041] When the punch head 3 moves downward to squeeze the piston cylinder 13 below, the gas in the piston cylinder 13 will be continuously discharged, and the second one-way valve 21 installed on one side limits the gas outlet of the piston cylinder 13, so the gas in the piston rod 14 can only be discharged through the first ventilation pipe 20 on one side, and discharged into the piston rod 14 through the first ventilation pipe 20, so at this time the movable end of the piston rod 14 will move upward, and because the second ventilation pipe 18 is fixed on the side wall of the piston rod 14, when the gas wants to be discharged through the second ventilation pipe 18, it is necessary to first push the piston rod 14 to rise to the specified position, and when it rises to the specified position, the gas will be discharged into the cylinder 28 through the second ventilation pipe 18, and push the impeller 29 in the cylinder 28 to rotate, and the piston rod 14 is retracted and extended by installing ventilation holes at different positions, so as to avoid the gas passing through the piston rod 14 directly into the cylinder 28 or failing to push the grinding wheel 16 to move to the specified position, thereby ensuring that the telescopic rod can accurately push the grinding wheel 16 The first one-way valve 21 in the piston rod 14 is used to refill the piston cylinder 13 with gas and the second one-way valve 21 in the piston rod 14 is used to refill the piston cylinder 13 with gas and return it to its original position. At the same time, because there is no gas to drive the impeller 29 to rotate, the piston in the piston rod 14 moves down quickly to block the air inlet 32 ​​of the second ventilation pipe 18, so that the impeller 29 will stop rotating and the grinding wheel 16 stops rotating to prevent the grinding wheel 16 from continuing to rotate. Continuing grinding will cause wear of the iron sheet, and the burrs generated by the stamping are ground by a certain amount of gas in the piston cylinder 13 to ensure that the piston rod 14 can drive the grinding wheel 16 to move to the specified position for grinding.

[0042] A long rod 12 is provided in the base 1, one end of which is mounted on the inner wall of the base 1 through a hinge seat 39, a slide groove 22 is provided on the long rod 12, a slider 23 is slidably connected in the slide groove 22, one side of the slider 23 is connected to the movable end of the piston cylinder 13 in a hinged manner, and the piston cylinder 13 is arranged on a side close to the hinge seat 39.

[0043] It should be noted that, because the telescopic rod needs to rise to the specified position first, the grinding wheel 16 needs to be against the position to be polished before rotational grinding can be carried out. Therefore, a certain pressure is needed at this time to push the impeller 29 to rotate to prevent the grinding wheel 16 from being stuck in place and unable to rotate for grinding. Therefore, the long rod 12 hinged to the inner wall of the base 1 is used to push one end of the long rod 12 downward, so that a lever structure is generated between it and the piston cylinder 13. The lever structure increases the thrust generated when the punching rod is pressed down, so that the grinding wheel 16 can completely overcome the friction at the burr for rotational grinding.

[0044] A rotating rod 40 is fixedly installed at the bottom of the grinding wheel 16, a driving ring 30 is fixedly installed on the cylinder 28, a gear ring 34 is fixedly installed on the inner wall of the driving ring 30, a driving gear 35 is rotatably connected inside the driving ring 30, the driving gear 35 is fixedly installed with the rotating shaft of the impeller 29, a transmission gear 36 meshing with the gear ring 34 and the driving gear 35 is fixedly installed inside the driving ring 30, and the diameter of the transmission gear 36 is smaller than the diameter of the driving gear 35, the transmission gear 36 is fixedly installed with the rotating rod 40, a protective plate 33 is rotatably installed on the driving ring 30, and the rotating rod 40 passes through the protective plate 33 and is connected to the grinding wheel 16.

[0045] The rotation of the impeller 29 will drive the grinding wheel 16 to rotate. Of course, the grinding wheel 16 can be installed on the rotating shaft of the impeller 29. At this time, the impeller 29 can drive the grinding wheel 16 to rotate and grind. However, the burrs generated by the punching machine when punching out the holes in the iron sheet will only be formed at the edges of the holes. Once the grinding wheel 16 rotates and grinds at the center, the grinding wheel 16 will use the same position for a long time to grind the burrs. After a period of time, the grinding wheel 16 will grind the burrs at the same position. The grinding wheel 16 will be scraped off the position where the burrs are polished, but at this time, the grinding wheel 16 will not be polished at other positions. Keep it intact. If the grinding wheel 16 is replaced at this time, it will be a waste of resources. Therefore, the rotation of the impeller 29 shaft drives the drive gear 35 to rotate, and the rotating drive gear 35 drives the transmission gear 36 meshing with it to rotate. The rotation of the transmission gear 36 drives the grinding wheel 16 to rotate. At the same time, because the other side of the transmission gear 36 is meshed with the gear ring 34, the transmission gear 36 will also rotate as a whole around the middle drive gear 35. Through circular rotation and grinding, the grinding wheel 16 can be evenly subjected to the friction force generated by the burrs, thereby increasing the service life of the equipment.

[0046] A lower pressure plate 7 is provided directly above the grinding hole 5, and a pushing plate 6 is slidably connected to the lower pressure plate 7. One end of the pushing plate 6 is fixedly installed with the electric push rod 2, and a pressing spring 8 is installed between the pushing plate 6 and the lower pressure plate 7. A lifting groove is provided on the base 1, and a lifting block 37 is slidably installed in the lifting groove. A U-shaped air guide groove 38 is provided on the base 1, and pushing columns 9 are slidably connected to both sides of the U-shaped air guide groove 38 when powered, and the pushing column 9 is fixedly installed with the lifting block 37 on the side close to the lifting block 37.

[0047] Among them, the punching machine drives the iron sheet to move and punch holes through the transmission roller on one side. It should be noted that the punched iron sheet will contact the surface of the equipment base 1 when moving. Long-term friction will cause damage to the equipment. At the same time, the burr position will be flipped from a vertical state to a parallel state with the surface of the iron sheet after friction with the base 1, and enter the hole produced by the punching. At this time, the grinding wheel 16 will cause some burrs to not be polished during grinding. It is necessary to ensure that the base 1 of the equipment will not contact the iron sheet when using it. However, if it does not contact the base 1, the iron sheet will be in a suspended state, causing the push plate 6 to pull the connection of the transmission roller on one side when pressing down, but there is also a certain probability of pulling one side. The hole is being punched or has been punched, because the punching head 3 will be stuck in the hole after punching, and the pulling on one side will cause the hole to deform, so the downward pressure of the punching head 3 drives the push plate 6 to move, and the push plate 6 will drive the lower pressure plate 7 to move downward through the pressing spring 8, so that the lower pressure plate 7 is against the pushing column 9 below, and by pushing the pushing column 9 on one side to move downward, the pushing column 9 on the other side of the U-shaped air guide groove 38 rises, and the rise makes the pushing column 9 drive the lifting block 37 to move upward, thereby supporting the upper iron sheet, and through the pushing and lifting of the lifting block 37 below and the pressing of the upper lower pressure plate 7, the middle iron sheet is clamped at the same time so that the grinding wheel 16 below can be better rotated for grinding.

[0048] A tray 11 is hinged at one end of the long rod 12 , and a tilting block 10 is fixedly installed in the base 1 . The tilting block 10 is arranged on a side close to the tray 11 , and the center of gravity of the tray 11 is biased toward the side close to the tilting block 10 .

[0049] Because the punching machine will continuously punch out waste when in use, and if the waste is not cleared, it will cause waste accumulation, affecting the downward swing of the long rod 12, and making the equipment unable to operate normally, so by installing the tray 11, the punching head 3 pushes the waste against the tray 11 when punching downward, so that the waste is placed on the tray 11, and when the punching head 3 rises back to its original position, because there is no abutment of the punching head 3, and the long rod 12 is in its original position, the tray 11 is tilted, so the waste can slide along the tilt direction of the tray 11 to one side of the tilting block 10, and the waste is discharged through the tilting block 10.

[0050] The cylinder protection cover 15 is fixedly mounted on the driving ring 30 , and a rubber ring 17 is fixedly mounted on one end of the protection cover 15 away from the driving ring 30 . The outer surface of the protection plate 33 is arranged in a fan-blade shape.

[0051] The grinding wheel 16 will generate a small amount of dust when grinding. Although the amount of dust is slight, it will still cause the connection of the shaft. Because it is metal dust, it will cause wear of the shaft at the connection, seriously affecting the service life of the equipment. Therefore, the grinding area is wrapped by the protective cover 15, and the protective plate 33 with a fan-shaped surface will rotate with the grinding wheel 16 to absorb the generated dust and further reduce the metal dust.

[0052] When in use, the feeding device on one side will push the punched material to the bottom of the punching head 3, and set the position to be punched to directly above the punching hole 4. At this time, the electric push rod 2 pushes the punching head 3 on its movable end to move downward, so that the punching head 3 can squeeze the iron sheet below. Through continuous squeezing, a round hole appears on the iron sheet, and the downward pressed punching head 3 will pass through the punching hole 4 below.

[0053] When the punch head 3 continues to move downward, it will press against the long rod 12 and push one end of the long rod 12 downward, so that a lever structure is generated between it and the piston cylinder 13. The lever structure increases the thrust generated when the punch rod is pressed downward, and the long rod 12 flipped downward will drive the slider 23 sliding on it to move downward, so that the movable end of the piston cylinder 13 installed on the slider 23 will also move downward, and the gas in the piston cylinder 13 will be continuously discharged, and the second one-way valve 21 installed on one side limits the gas outlet of the piston cylinder 13, so the gas in the piston rod 14 can only be discharged through the first ventilation pipe 20 on one side and discharged into the piston rod 14 through the first ventilation pipe 20, so at this time the movable end of the piston rod 14 will move upward, and because the second ventilation pipe 18 is fixed on the side wall of the piston rod 14, when the gas wants to be discharged through the second ventilation pipe 18, it is necessary to push the piston rod 14 to rise to the specified position first.

[0054] When it rises to the specified position, the gas will be discharged into the air inlet 32 ​​through the second vent pipe 18, and then into the sleeve 26 through the air inlet 32. Because the gas is constantly entering, the gas needs to be discharged from the air outlet 31 to be discharged from the sleeve 26. The flow of air will drive the impeller 29 in the sleeve 26 to rotate. The rotating impeller 29 drives the grinding wheel 16 installed on its rotating shaft to rotate. The burrs are ground by the rotation of the grinding wheel 16. The thrust generated by the downward punching of the punch head 3 drives the grinding wheel 16 to rotate and grind the burrs. At the same time, the gas in the piston cylinder 13 is constant, and the second compression spring 27 in the sleeve 26 can continuously move upward to drive the grinding wheel 16 to rise and tightly press against the iron sheet.

[0055] The rotation of the impeller 29 shaft drives the driving gear 35 to rotate, and the rotating driving gear 35 drives the transmission gear 36 meshing with it to rotate, and the rotation of the transmission gear 36 drives the grinding wheel 16 to rotate. At the same time, because the other side of the transmission gear 36 is meshed with the gear ring 34, the transmission gear 36 will also rotate as a whole around the middle driving gear 35. Of course, the upward movement of the grinding wheel 16 will drive the protective cover 15 to wrap the grinding area, and at the same time, the protective plate 33 with a fan-shaped surface will rotate with the grinding wheel 16 to absorb the generated dust and further reduce metal dust.

[0056] Of course, when the punching machine is punching holes, the downward pressure of the punch head 3 drives the push plate 6 to move, and the push plate 6 will drive the lower pressure plate 7 to move downward through the second compression spring 27, so that the lower pressure plate 7 is against the push column 9 below, and by pushing the push column 9 on one side to move downward, the push column 9 on the other side of the U-shaped air guide groove 38 rises, and the rise causes the push column 9 to drive the lifting block 37 to move upward, thereby supporting the upper iron sheet, and through the push and lifting of the lower lifting block 37 and the pressing of the upper lower pressure plate 7, the middle iron sheet is clamped at the same time so that the grinding wheel 16 below can be better rotated for grinding.

[0057] When the electric push rod 2 pushes the punch head 3 to rise and return to its original position, the first compression spring 24 in the piston cylinder 13 pushes the movable end of the piston cylinder 13 back to its original position. At this time, the second compression spring 27 in the piston rod 14 will also drive the gas in the piston rod 14 to be discharged, so that the gas enters the piston cylinder 13, and the piston cylinder 13 is refilled with gas through the piston rod 14 and the second one-way valve 21 to return to its original position. At the same time, because there is no gas to drive the impeller 29 to rotate, the piston in the piston rod 14 moves down quickly to block the air inlet 32 ​​of the second ventilation pipe 18, so that the impeller 29 will stop rotating at this time, and the grinding wheel 16 will stop rotating.

[0058] At the same time, the punch head 3 pushes the waste against the tray 11 when punching downward, so that the waste is placed on the tray 11. When the punch head 3 rises back to its original position, because there is no abutment of the punch head 3 and the long rod 12 is in its original position, the tray 11 is tilted, so the waste can slide along the tilt direction of the tray 11 to one side of the tilting block 10 and be discharged through the tilting block 10.

[0059] A specific embodiment of the present invention is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above described embodiment. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments without departing from the principles and ideas of the present invention should still fall within the scope of protection of the present invention.

Claims

1. A multi-station electric punching machine, comprising a base (1), an electric push rod (2) fixedly mounted on the base (1), a punch head (3) fixedly mounted on one end of the electric push rod (2), a punching hole (4) for the punch head (3) to penetrate and press downward is provided on the base (1), characterized in that: The base (1) is provided with a grinding hole (5), a grinding wheel (16) is installed in the base (1), the grinding hole (5) is larger than the diameter of the grinding wheel (16), a driving assembly is installed in the base (1), the grinding wheel (16) is installed on the driving assembly, one side of the driving assembly is connected to the punching head (3), when the electric punching machine is in operation, the driving assembly drives the grinding wheel (16) to rotate and move upwards through the extrusion of the electric push rod (2), grinds against the burrs generated at the punching position, and drives the grinding wheel (16) to move downward back to its original position after the extrusion of the electric push rod (2) is lost.

2. A multi-station electric punching machine according to claim 1, characterized in that The driving assembly comprises a piston cylinder (13), a first compression spring (24), a piston rod (14), a sleeve (26), a second compression spring (27), a cylinder (28), and an impeller (29). The piston cylinder (13) is fixedly installed in the base (1). The first compression spring (24) is installed in the piston cylinder (13). A piston rod (14) is provided on one side of the piston cylinder (13). A sleeve (26) is sleeved on the movable end of the piston rod (14). A second compression spring (27) is placed in the sleeve (26). The two ends of the second compression spring (27) are respectively connected to the movable end. The movable end of the plug rod (14) abuts against the inner wall of the sleeve (26); a cylinder (28) is fixedly mounted on one end of the sleeve (26); an impeller (29) is rotatably connected inside the cylinder (28); an output shaft of the impeller (29) extends outside the cylinder (28) and is connected to the grinding wheel (16); an air inlet (32) and an air outlet (31) are provided on the side wall of the cylinder (28); an air inlet member is installed between the air inlet (32), the piston rod (14) and the piston cylinder (13); the air inlet member guides the gas in the piston cylinder (13) into the piston rod (14) and the cylinder (28).

3. A multi-station electric punching machine according to claim 2, characterized in that The air intake member comprises a third compression spring (25), a first ventilation pipe (20), a second ventilation pipe (18), a first non-return valve (19), and a second non-return valve (21). The third compression spring (25) is installed in the piston rod (14). The third compression spring (25) is sleeved on the movable end of the piston rod (14). The bottom of the piston rod (14) is provided with a first ventilation pipe (20). The other end of the first ventilation pipe (20) is connected to the piston cylinder (13). The second ventilation pipe (18) is fixedly installed on the side wall of the piston rod (14). The other end of the second ventilation pipe (18) is connected to the air intake port (32). The first non-return valve (19) is installed on the second ventilation pipe (18). The second non-return valve (21) is installed on one side of the piston cylinder (13).

4. A multi-station electric punching machine according to claim 3, characterized in that The base (1) is provided with a long rod (12), one end of which is mounted on the inner wall of the base (1) via a hinge seat (39), a slide groove (22) is provided on the long rod (12), a slider (23) is slidably connected in the slide groove (22), one side of the slider (23) is connected to the movable end of the piston cylinder (13) in a hinged manner, and the piston cylinder (13) is arranged on a side close to the hinge seat (39).

5. A multi-station electric punching machine according to claim 4, characterized in that A rotating rod (40) is fixedly mounted on the bottom of the grinding wheel (16), a driving ring (30) is fixedly mounted on the cylinder (28), a toothed ring (34) is fixedly mounted on the inner wall of the driving ring (30), a driving gear (35) is rotatably connected inside the driving ring (30), the driving gear (35) is fixedly mounted on the rotating shaft of the impeller (29), a transmission gear (36) meshing with the toothed ring (34) and the driving gear (35) is rotatably mounted inside the driving ring (30), and the diameter of the transmission gear (36) is smaller than the diameter of the driving gear (35), the transmission gear (36) is fixedly mounted on the rotating rod (40), a protective plate (33) is rotatably mounted on the driving ring (30), and the rotating rod (40) passes through the protective plate (33) and is connected to the grinding wheel (16).

6. A multi-station electric punching machine according to claim 5, characterized in that A lower pressure plate (7) is provided directly above the grinding hole (5), and a push plate (6) is slidably connected to the lower pressure plate (7), one end of the push plate (6) is fixedly installed with the electric push rod (2), and a pressing spring (8) is installed between the push plate (6) and the lower pressure plate (7). A lifting groove is provided on the base (1), and a lifting block (37) is slidably installed in the lifting groove. The grinding hole (5) is set on the lifting block (37), and a U-shaped air guide groove (38) is provided on the base (1). Both sides of the U-shaped air guide groove (38) are slidably connected with a push column (9), and the push column (9) on the side close to the lifting block (37) is fixedly installed with the lifting block (37).

7. A multi-station electric punching machine according to claim 6, characterized in that One end of the long rod (12) is hinged with a tray (11), and a tilting block (10) is fixedly installed in the base (1). The tilting block (10) is arranged on a side close to the tray (11), and the center of gravity of the tray (11) is biased towards the side close to the tilting block (10).

8. The multi-station electric punching machine according to claim 5, characterized in that A protective cover (15) is fixedly mounted on the driving ring (30), a rubber ring (17) is fixedly mounted on one end of the protective cover (15) away from the driving ring (30), and the outer surface of the protective plate (33) is arranged in a fan-shaped shape.

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