Full-automatic hydraulic plate bending machine

Abstract

The invention relates to the technical field of bending machines, in particular to a full-automatic hydraulic plate bending machine which comprises a bending machine main body, a punch and a die are arranged on the bending machine main body, the die and the punch are matched with each other to be used for bending a plate, and an ejector block used for limiting the plate is arranged on the bending machine main body. The bending machine comprises a bending machine body, a feeding device is arranged on the bending machine body and comprises a turning plate, a separating device is arranged on the feeding device, the separating device uses air pressure to separate out independent plates to be machined in sequence, and the feeding device comprises a base fixedly installed on the bending machine body. A first hydraulic piston and an electric push rod are fixedly installed on the base, and two sliding frames are symmetrically and fixedly installed on the base. And rotating shafts are arranged on the two sliding frames. The automation degree of an existing bending machine is improved, and therefore the production efficiency of the bending machine is improved.

Description

Technical Field

[0001] The invention relates to the technical field of bending machines, in particular to a fully automatic hydraulic sheet metal bending machine. Background Art

[0002] Hydraulic bending machine is an important equipment used in sheet metal industry for workpiece bending and forming. Its function is to bend metal sheets into parts of various shapes according to process requirements.

[0003] The existing bending machine is generally in the form shown in the patent number: CN115301778B, and the patent name is: A sheet metal bending machine. This type of bending machine needs to be manually loaded when working, and the worker needs to keep holding the sheet metal during the bending process. Therefore, when the sheet metal is large in area and heavy in weight, it puts a great burden on the worker's physical strength, which is not conducive to improving the production efficiency of the bending machine.

[0004] Therefore, a fully automatic hydraulic sheet metal bending machine is proposed. Summary of the invention

[0005] The object of the present invention is to provide a fully automatic hydraulic sheet metal bending machine to improve the automation level of the existing bending machine, thereby improving the production efficiency of the bending machine.

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

[0007] A fully automatic hydraulic sheet metal bending machine comprises a bending machine body, on which a punch and a die are arranged, the die and the punch cooperate with each other to bend the sheet metal, the bending machine body is provided with a top block for limiting the sheet metal, the bending machine body is provided with a feeding device, and the feeding device is provided with a separation device.

[0008] Based on this arrangement, when it is necessary to bend sheet materials, all the sheets used as processing raw materials are first placed vertically, and all the sheets are neatly arranged in the horizontal direction, and then the arranged batch of sheets is placed on the feeding device. Then, when the present invention is working, the separation device can separate the sheets from the batch of sheets in sequence, and under the action of the feeding device, the separated sheets will be pushed onto the mold in sequence until one side edge of the sheet is sent forward to a position that abuts against the top block. Subsequently, the punch is pressed downward, so that the sheet material on the mold is bent into a fixed shape under the extrusion of the punch and the mold. Then, the punch retracts upward, the worker unloads the processed finished product, and then repeats the above processing process. As a result, the present invention can realize automatic loading of the bending machine, thereby improving production efficiency.

[0009] Preferably, the feeding device includes a base fixedly mounted on the main body of the bending machine, a hydraulic piston 1 and an electric push rod are fixedly mounted on the base, and two sliding frames are symmetrically fixedly mounted on the base; a rotating shaft is provided on each of the two sliding frames, and a flap is movably mounted on the two rotating shafts, and two sliding grooves are symmetrically provided on the flap, and the two sliding grooves are respectively mounted on two square parts; the electric push rod is used to push or lock the movement of the flap; a hydraulic piston 2 is provided on the main body of the bending machine, and a clamping head is fixedly mounted on the hydraulic piston 2, and the clamping head is used to clamp the sheet material to be bent.

[0010] With this arrangement, when the present invention is working, for a batch of sheet materials placed on the base, the feeding device will first push a batch of sheet materials arranged on the base through the hydraulic piston 1, so as to push a sheet material farthest from the hydraulic piston 1 to the separation device and then stop pushing. Then, the separation device separates the sheet material separately and makes the separated sheet material lean against the side of the flap at an angle. At this time, the electric push rod is in an upwardly extended state, and the plane on the output end of the electric push rod abuts against and is locked against the bottom side plane of the flap, so that the flap cannot rotate or translate at this time, so the sheet material can be stably leaned against the flap.

[0011] After that, the separation device stops working and resets, and the electric push rod also retracts downward and no longer contacts the bottom side of the flap. Therefore, under the gravity of the board, the flap can rotate in the direction of the slide rack, so that the board can be placed on the two slide racks in a certain and controllable movement mode, and the flap can pass through the gap between the two slide racks and finally return to the vertical position. Therefore, the output end of the retracted electric push rod will be opposite to the bottom side of the flap again. In addition, in this process, the adsorption relationship between the permanent magnet and the board can also be released by relying on the kinetic energy of the flap rotation. After the flap returns to the vertical position, the electric push rod extends upward again to push the flap upward to the side of the batch of sheets on the base until the electric push rod is locked with the flap again, thereby achieving the reset and locking of the flap.

[0012] As for the plate falling on the slide frame, the plate will slide down along the slide frame onto the main body of the bending machine, and continue to move on the main body of the bending machine by its own inertia until one side edge of the plate is sent forward to a position against the top block. Then, the punch can be pressed down to perform the bending operation. Therefore, the automatic loading of the present invention is conducive to improving the production efficiency of the bending machine.

[0013] It should be noted that, during the process of the punch pressing down, the hydraulic piston 2 first extends downward by a preset stroke, so that the clamping head presses the plate to be processed onto the bending machine body. After the clamping head presses the plate, the punch presses down again to bend the plate. In this way, the plate can be prevented from deviating from the working position when being bent, thereby ensuring the processing effect of the bending process.

[0014] In addition, it is worth adding that in order to limit the rotation of the flap, in addition to utilizing the abutment relationship between the plane on the output end of the electric push rod and the bottom plane of the flap, two docking holes can also be symmetrically opened on the flap to accommodate the output end of the electric push rod; at this time, when the output end of the electric push rod is located in the docking hole, the output end of the electric push rod abuts against the bottom end of the docking hole.

[0015] Compared with the aforementioned scheme, this arrangement can utilize the insertion and matching of the output end of the electric push rod with the docking hole to achieve more freedom restrictions on the flap, so that when the flap is pushed up to the highest point and locked by the electric push rod, the position of the flap is more stable. In addition, when the electric push rod locks the flap, if the flap attempts to rotate, the force of the flap on the output end of the electric push rod will act in the radial direction of the output end rather than in the axial direction. Therefore, the resistance of the output end of the electric push rod to the force applied by the flap can be improved on the outside of the electric push rod by simply setting a telescopic sleeve, which is helpful to prevent the electric push rod from being damaged due to excessive force. However, the plug-in matching relationship of this scheme will also require the stroke of the electric push rod to be increased, which is not conducive to the miniaturization of the present invention. At the same time, the plug-in matching relationship also has higher requirements on the matching accuracy between components, so it is bound to increase additional design costs and manufacturing costs.

[0016] Preferably, the separation device includes an air pump and a nozzle fixedly mounted on a base, the nozzle is connected to the air pump through a pipe, and a permanent magnet is fixedly mounted on the flap; a storage groove is provided on the base, a return spring 1 is fixedly mounted in the storage groove, a steel block is fixedly mounted on the other end of the return spring 1, and an electromagnet is fixedly mounted on the bottom end of the storage groove.

[0017] With this arrangement, the block extends from the receiving groove under the action of the return spring 1 to limit the movement of the sheet on the base. When the hydraulic piston 1 pushes a batch of sheets arranged on the base, the sheet farthest from the hydraulic piston 1 will be pushed to abut against the block first. At this time, the gap between the sheet and another sheet adjacent to it will be opposite to the nozzle. Subsequently, the air pump is started, and the nozzle sprays high-pressure gas into the above gap to form an air film, forcing the two sheets to separate. Next, the electromagnet is started, and the block is sucked back into the receiving groove. At this time, the two adjacent sheets will be pushed to both sides respectively under the action of the high-pressure gas, and the sheet farthest from the hydraulic piston 1 will be placed on the flap and finally adsorbed on the flap by the permanent magnet; the other sheet adjacent to the sheet will be abutted against the remaining sheets under the thrust of the high-pressure gas. Thereafter, the electromagnet is powered off, and the return spring 1 pushes the block out again. Therefore, except for the sheet adsorbed on the flap by the permanent magnet, the remaining sheets will be limited by the block again, waiting for the next separation operation.

[0018] Therefore, the separation device can sequentially separate individual plates from a batch of plates, thereby ensuring that the processing quantity of the bending machine each time is stable, thereby improving the reliability of the present invention.

[0019] Preferably, the end of the rotating shaft has a square portion; a mounting hole is opened on the sliding frame, a pawl is rotatably mounted on the side wall surface of the mounting hole, a second reset spring is fixedly mounted on the pawl, and the other end of the second reset spring is fixedly mounted on the side wall surface of the mounting hole; the rotating shaft is arranged in the mounting hole, and a ratchet is arranged on the side wall surface of the rotating shaft.

[0020] When the flap rotates to place the plate to be processed onto the slide rack, the flap will pass through the gap between the two slide racks and continue to rotate downward. At this time, due to the limited travel speed of the electric push rod, the electric push rod has not yet completely retracted, so the flap will hit the side of the output end of the electric push rod and finally rest on the electric push rod. Subsequently, when the electric push rod is completely retracted, the flap can be quickly swung back to a vertical position so that the electric push rod can push it upward. This is conducive to the flap quickly returning to a vertical position after rotation, thereby improving the working efficiency of the present invention.

[0021] However, since the electric actuator is fixed to the base, in this impact system, the residual momentum can only be reflected on the flap, which means that the flap will rebound and hit the electric actuator after a short time. This will cause damage to the service life and reliability of the electric actuator.

[0022] Therefore, a pawl and a ratchet are provided. Thus, due to the cooperation between the slide groove and the square portion, when the flap rotates, the flap will drive the rotating shaft to rotate. At this time, due to the cooperation between the pawl and the ratchet, the flap can only rotate in one direction toward the sliding frame when rotating, so that after the flap hits the electric push rod for the first time, the flap is prevented from rebounding, thereby reducing the number of times the flap hits the electric push rod, thereby increasing the service life of the electric push rod and the reliability of the present invention.

[0023] In addition, in order to reduce the force of the first impact of the flap on the electric push rod and further reduce the risk of damage to the electric push rod, a buffer strip can be fixedly installed on the side wall of the sliding frame close to the flap to rub against the side wall of the flap, thereby reducing the kinetic energy accumulated by the flap during the rotation under the action of gravity. This can further reduce the impact on the electric push rod and improve the service life of the electric push rod and the reliability of the present invention.

[0024] Preferably, a receiving hole is opened on the side wall surface of the slide groove, and a return spring three is fixedly installed in the receiving hole. A limiting pin is fixedly installed on the other end of the return spring three, and the limiting pin is used to limit the movement of the square part in the slide groove.

[0025] When the electric push rod pushes the flap to move upward, the rotating shaft also moves in the slide groove. When the rotating shaft moves to contact the limit pin, the rotating shaft squeezes the limit pin, and the reset spring 3 is compressed, so the limit pin retracts into the accommodating hole, thereby generating an avoidance. Therefore, with the help of the electric push rod, the rotating shaft can pass the limit of the limit pin. Thereafter, when the electric push rod retracts to allow the flap to rotate, due to the lack of the thrust of the electric push rod, the gravity of the flap itself is not enough to allow the limit pin to avoid, so the limit pin and the slide groove jointly limit the movement of the rotating shaft, and the flap can only rotate around the rotating shaft. Therefore, when the feeding device is working, even if the electric push rod retracts, the flap will not fall in the vertical direction, thereby ensuring the reliability of the present invention.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. By setting a feeding device, when the present invention is working, the hydraulic piston 1 is used to push the plates arranged on the base, and the plate farthest from the hydraulic piston 1 is pushed to the side of the flap, and the plate is then adsorbed by the permanent magnet and tilted against the flap. Then the electric push rod retracts downward, and under the action of the gravity of the plate, the flap rotates to place the plate on the sliding rack. Then the plate slides down along the sliding rack onto the main body of the bending machine until the plate abuts against the top block. Then, the punch can be pressed down to perform the bending operation. Therefore, the present invention can automatically load materials, which is beneficial to improving the production efficiency of the bending machine.

[0028] 2. By setting up a separation device, a nozzle is used to spray high-pressure gas into the gap between the plates to form an air film, which can force two adjacent plates to separate. Then, the electromagnet is started, and the block is sucked back into the receiving groove. Under the action of air pressure, the plate farthest from the hydraulic piston will be placed on the flap and finally adsorbed on the flap by the permanent magnet. After that, the electromagnet is powered off and the block is ejected again. At this time, the remaining plates will be limited by the block again, waiting for the next separation operation. Therefore, the present invention can ensure that the number of processing of the bending machine each time is stable, thereby improving the reliability of the present invention.

[0029] 3. By setting a pawl and a ratchet, when the flap rotates, the flap will drive the rotating shaft to rotate. At this time, due to the cooperation of the pawl and the ratchet, the flap can only rotate in one direction when rotating, thereby preventing the flap from rebounding after the flap hits the electric push rod for the first time, thereby reducing the number of times the flap hits the electric push rod, thereby improving the service life of the electric push rod and the reliability of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 for Figure 1 The front view of the plane;

[0032] Figure 3 This is a schematic diagram of the planar structure of the main inventive part in the first embodiment of the present invention;

[0033] Figure 4 for Figure 3 A partial enlarged schematic diagram of part A;

[0034] Figure 5 for Figure 3 A partial enlarged schematic diagram of part B;

[0035] Figure 6 It is a structural schematic diagram of the rotating shaft in the present invention;

[0036] Figure 7 Schematic diagram of the matching relationship between the rotating shaft and the pawl;

[0037] Figure 8 It is a schematic diagram of the coordination relationship between the flap, the sliding frame and the silo outlet in the present invention;

[0038] Fig. 9 This is a schematic diagram of the matching relationship between the output end of the electric push rod and the flap in the second embodiment of the present invention.

[0039] In the figure: 1. bending machine body; 2. base; 11. punch; 12. die; 13. ejector block; 14. clamping head; 15. hydraulic piston II; 21. slide frame; 22. flap; 23. hydraulic piston I; 24. silo; 25. plate to be processed; 26. electric push rod; 27. storage slot; 211. buffer strip; 212. mounting hole; 213. reset spring II; 214. ratchet; 221. slide slot; 222. permanent magnet; 223. rotating shaft; 224. square part; 225. ratchet; 226. accommodating hole; 227. limit pin; 228. reset spring III; 261. plane part I; 262. plane part II; 263. docking hole; 264. push block; 271. electromagnet; 272. reset spring I; 273. clamping block; 274. nozzle. DETAILED DESCRIPTION

[0040] The following content will use the drawings listed in the aforementioned "Description of Drawings" section to clearly explain the specific implementation methods of the present invention, in the hope that readers can have a more complete and objective understanding of the working principle of the present invention and the corresponding technical effects.

[0041] like Figures 1 to 8 As shown, a specific implementation of the present invention is demonstrated. It should be explained in advance that: first, the cooperation between the punch 11, the die 12 and the top block 13 on the bending machine body 1 has a mature prior art, so it is only briefly described below and no detailed introduction is given; second, the hydraulic piston 23, the electric push rod 26 and other hydraulic and electric components in the present invention are sequentially controlled by computer control; third, the air pump is a prior art and is not shown in the drawings of this embodiment; fourth, a special chamber is provided on the base 2 for storing the sheet materials to be processed, and the chamber is called a silo 24, and the flap 22 is arranged on one side of the silo 24, and in order to allow the sheet materials stored in the silo 24 to be smoothly placed on the slide rack 21, the width of these sheets should be greater than the width of the gap between the two slide racks 21, please refer to the details. Figure 8 .

[0042] When the present invention is installed, first, a punch 11 and a die 12 are arranged on the bending machine body 1, the die 12 and the punch 11 cooperate with each other for bending the sheet material, a top block 13 for limiting the sheet material is arranged on the bending machine body 1, a feeding device is arranged on the bending machine body 1, and a separation device is arranged on the feeding device.

[0043] Among them, the feeding device includes a base 2 fixedly installed on the bending machine body 1, a hydraulic piston 23 and an electric push rod 26 are fixedly installed on the base 2, and two sliding racks 21 are symmetrically fixedly installed on the base 2; a rotating shaft 223 is provided on the two sliding racks 21, and a flap 22 is movably installed on the two rotating shafts 223, and two slide grooves 221 are symmetrically provided on the flap 22, and the two slide grooves 221 are respectively installed on two square parts 224; the electric push rod 26 is used to push or lock the movement of the flap 22; a hydraulic piston 15 is provided on the bending machine body 1, and a clamping head 14 is fixedly installed on the hydraulic piston 15, and the clamping head 14 is used to clamp the sheet to be bent; a locking device is provided on the sliding rack 21.

[0044] The separation device includes an air pump and a nozzle 274 fixedly mounted on the base 2, the nozzle 274 is connected to the air pump through a pipeline, and a permanent magnet 222 is fixedly mounted on the flap 22; a receiving groove 27 is opened on the base 2, a return spring 272 is fixedly mounted in the receiving groove 27, a steel block 273 is fixedly mounted on the other end of the return spring 272, and an electromagnet 271 is fixedly mounted on the bottom end of the receiving groove 27.

[0045] Also, see Figure 6 , a square portion 224 is provided on the end of the rotating shaft 223. In addition, a mounting hole 212 is provided on the sliding frame 21, and a pawl 214 is rotatably installed on the side wall surface of the mounting hole 212, and a return spring 213 is fixedly installed on the pawl 214, and the other end of the return spring 213 is fixedly installed on the side wall surface of the mounting hole 212; the rotating shaft 223 is arranged in the mounting hole 212, and a ratchet 225 is provided on the side wall surface of the rotating shaft 223. The locking device includes a receiving hole 226 provided on the side wall surface of the slide groove 221, and a return spring 3 228 is fixedly installed in the receiving hole 226, and a limiting pin 227 is fixedly installed on the other end of the return spring 3 228, and the limiting pin 227 is used to limit the movement of the square portion 224 in the slide groove 221. As shown Figure 5 As shown, a plane part 1 261 is provided on the output end of the electric push rod 26, and two plane parts 262 are symmetrically provided on the flap 22, and the plane parts 262 are used to abut against the plane part 1 261. A buffer strip 211 is fixedly installed on the side wall of the sliding frame 21 close to the flap 22, and the buffer strip 211 is used to abut against the side wall of the flap 22.

[0046] When the present invention is working, all the sheets used as processing raw materials are first placed vertically, and all the sheets are neatly arranged in the horizontal direction, and then the arranged batch of sheets are placed on the feeding device. Then, when the present invention is working, the separation device can separate the sheets in the batch of sheets in sequence, and under the action of the feeding device, the separated sheets will be pushed onto the bending machine body 1 in sequence and slide under the punch 11 until one side edge of the sheet is sent forward to the position against the top block 13. Subsequently, the punch 11 is pressed down, so that the sheet on the die 12 is bent into a fixed shape under the extrusion of the punch 11 and the die 12. Then, the punch 11 shrinks upward, the worker takes out the finished workpiece, and then repeats the above processing process. As a result, the present invention can realize automatic feeding of the bending machine, thereby improving production efficiency.

[0047] Among them, for a batch of sheet materials placed on the base 2, the feeding device will first push a batch of sheet materials arranged on the base 2 through the hydraulic piston 1 23, so as to push a sheet farthest from the hydraulic piston 1 23 to the separation device and then stop pushing. Then, the separation device separates the sheet alone and makes the separated sheet lean on the side of the flap 22. At this time, the electric push rod 26 is in an upwardly extended state, and the plane 1 on the output end of the electric push rod 26 abuts against and is locked with the bottom side plane 2 of the flap 22, so that the flap 22 cannot rotate or translate at this time, so the sheet can be stably leaned on the flap 22.

[0048] After that, the separation device stops working and resets, and the electric push rod 26 also retracts downward and no longer contacts the bottom side of the flap 22. Therefore, under the gravity of the board, the flap 22 can rotate toward the slide rack 21, so that the board can be placed on the two slide racks 21 in a certain and controllable movement mode, and the flap 22 can pass through the gap between the two slide racks 21 and finally return to a vertical position. Therefore, after the electric push rod 26 retracts, plane 1 is opposite to another plane 2 on the flap 22. At this time, the electric push rod 26 extends upward again to push the flap 22 upward to the side of the batch of sheets on the base 2 until the electric push rod 26 is locked with the flap 22 again, thereby achieving the reset and locking of the flap 22.

[0049] As for the plate falling on the slide frame 21, the plate will slide down along the slide frame 21 onto the bending machine body 1, and continue to move on the bending machine body 1 by its own inertia until one side edge of the plate is sent forward to a position against the top block 13. Then, the punch 11 can be pressed down to perform the bending operation. Therefore, the present invention can realize automatic loading and improve the production efficiency of the bending machine.

[0050] It should be noted that, during the process of the punch 11 pressing down, the hydraulic piston 15 first extends downward by a preset stroke, so that the pressing head 14 presses the plate to be processed onto the bending machine body 1. After the pressing head 14 presses the plate, the punch 11 presses down again to bend the plate. In this way, the plate can be prevented from deviating from the working position when being bent, thereby ensuring the processing effect of the bending process.

[0051] As for the separation device, the block 273 thereof extends from the receiving groove 27 under the action of the return spring 272 to limit the movement of the sheet on the base 2. When the hydraulic piston 23 pushes a batch of sheet arranged on the base 2, the sheet farthest from the hydraulic piston 23 will be pushed to abut against the block 273 first. At this time, the gap between the sheet and another sheet adjacent to it will be opposite to the nozzle 274. Subsequently, the air pump is started, and the nozzle 274 sprays high-pressure gas into the above gap to form an air film, forcing the two sheets to separate. Next, the electromagnet 271 is started, and the block 273 is sucked back into the receiving groove 27. At this time, the two adjacent sheets will be pushed to both sides respectively under the action of the high-pressure gas, and the sheet farthest from the hydraulic piston 23 will be placed on the flap 22, and finally adsorbed on the flap 22 by the permanent magnet 222; the other sheet adjacent to the sheet will abut against the other sheets under the thrust of the high-pressure gas. Thereafter, the electromagnet 271 is powered off, and the reset spring 272 pushes the block 273 out again. Therefore, except for the plates adsorbed on the flap 22 by the permanent magnet 222, the remaining plates will be limited by the block 273, waiting for the next separation operation.

[0052] Therefore, the separation device can sequentially separate individual plates from a batch of plates, thereby ensuring that the processing quantity of the bending machine each time is stable, thereby improving the reliability of the present invention.

[0053] It is worth adding that, for materials such as aluminum alloy that cannot be adsorbed by magnets, a suction cup can be used instead of the permanent magnet 222 to adsorb the plate.

[0054] See also Fig. 9 , showing the second embodiment of the present invention. The difference between the second embodiment and the first embodiment is that two docking holes 263 are symmetrically provided on the flap 22, and the docking holes 263 are used to accommodate the output end of the electric push rod 26; when the output end of the electric push rod 26 is located in the docking hole 263, the output end of the electric push rod 26 abuts against the bottom end of the docking hole 263. Specifically, a push block 264 is fixedly mounted on the output end of the electric push rod 26, and the push block 264 abuts and abuts against the docking hole 263.

[0055] Compared with the matching mode of only plane matching in the first embodiment, the setting in this embodiment can utilize the insertion matching of the output end of the electric push rod 26 and the docking hole 263 to achieve more freedom restrictions on the flap 22, so that when the flap 22 is pushed upward to the highest point and stuck by the electric push rod 26, the position of the flap 22 is more stable. In addition, when the electric push rod 26 locks the flap 22, if the flap 22 attempts to rotate, the force of the flap 22 on the output end of the electric push rod 26 will act in the radial direction of the output end rather than in the axial direction. Therefore, the resistance of the output end of the electric push rod 26 to the force applied by the flap 22 can be improved by simply setting a telescopic sleeve on the outside of the electric push rod 26, so as to prevent the electric push rod 26 from being damaged due to excessive force. However, the insertion matching relationship of this scheme will also require the stroke of the electric push rod 26 to be increased, which is not conducive to the miniaturization of the present invention. At the same time, the insertion-type fitting relationship also has high requirements on the fitting accuracy between components, which is bound to increase additional design and manufacturing costs.

[0056] It should be emphasized that, based on the contents recorded in the above text, although the beneficial effects of the present invention have been elaborated in detail and corresponding specific implementation methods have been provided for this purpose, ordinary technicians in this field can still make conventional substitutions, deformations, etc. based on the given technical solutions without creative labor to achieve the same technical effects, based on the full understanding of the working principle of the present invention, but this should not be considered to exceed the scope of the present invention. Specifically, the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A fully automatic hydraulic sheet metal bending machine, comprising a bending machine body (1), wherein the bending machine body (1) is provided with a punch (11) and a die (12), wherein the die (12) and the punch (11) cooperate with each other to bend sheet metal, and wherein the bending machine body (1) is provided with a top block (13) for limiting the position of sheet metal, wherein: The bending machine body (1) is provided with a feeding device, the feeding device includes a flap (22), the flap (22) transfers the plate to the bending machine body (1) in a flipping manner, and the feeding device is provided with a separation device, the separation device uses air pressure to sequentially separate the individual plates to be processed.

2. A fully automatic hydraulic sheet metal bending machine according to claim 1, characterized in that: The feeding device comprises a base (2) fixedly mounted on the bending machine body (1), a hydraulic piston (23) and an electric push rod (26) fixedly mounted on the base (2), two sliding racks (21) symmetrically fixedly mounted on the base (2); a square portion (224) is provided on the end of the rotating shaft (223); the two sliding racks (21) are each provided with a rotating shaft (223), a flap (22) is movably mounted on the two rotating shafts (223), and the flap (22) is symmetrically mounted on the base (2). Two slide grooves (221) are symmetrically provided on the plate (22), and the two slide grooves (221) are respectively installed on two square parts (224); the electric push rod (26) is used to push or lock the movement of the flap (22); a hydraulic piston (15) is provided on the bending machine body (1), and a clamping head (14) is fixedly installed on the hydraulic piston (15), and the clamping head (14) is used to clamp the sheet material to be bent; a locking device is provided on the sliding frame (21).

3. A fully automatic hydraulic sheet metal bending machine according to claim 2, characterized in that: The separation device comprises an air pump and a nozzle (274) fixedly mounted on a base (2); the nozzle (274) is connected to the air pump via a pipeline; a permanent magnet (222) is fixedly mounted on the flap (22); a receiving groove (27) is provided on the base (2); a return spring (272) is fixedly mounted in the receiving groove (27); a steel clamping block (273) is fixedly mounted on the other end of the return spring (272); and an electromagnet (271) is fixedly mounted at the bottom end of the receiving groove (27).

4. A fully automatic hydraulic sheet metal bending machine according to claim 3, characterized in that: The sliding frame (21) is provided with a mounting hole (212), a ratchet (214) is rotatably mounted on the side wall of the mounting hole (212), a second return spring (213) is fixedly mounted on the ratchet (214), and the other end of the second return spring (213) is fixedly mounted on the side wall of the mounting hole (212); the rotating shaft (223) is arranged in the mounting hole (212), and a ratchet (225) is arranged on the side wall of the rotating shaft (223).

5. The fully automatic hydraulic sheet metal bending machine according to claim 3, characterized in that: The locking device comprises a receiving hole (226) formed on a side wall surface of the slide groove (221), a return spring (228) being fixedly installed in the receiving hole (226), a limit pin (227) being fixedly installed on the other end of the return spring (228), and the limit pin (227) being used for limiting the movement of the square portion (224) in the slide groove (221).

6. The fully automatic hydraulic sheet metal bending machine according to claim 3, characterized in that: A plane part 1 (261) is arranged on the output end of the electric push rod (26), and two plane parts 2 (262) are symmetrically arranged on the flap (22), and the plane parts 2 (262) are used to abut against the plane part 1 (261).

7. The fully automatic hydraulic sheet metal bending machine according to claim 3, characterized in that: Two docking holes (263) are symmetrically formed on the flap (22), and the docking holes (263) are used to accommodate the output ends of the electric push rod (26); when the output end of the electric push rod (26) is located in the docking hole (263), the output end of the electric push rod (26) abuts against the bottom end of the docking hole (263).

8. The fully automatic hydraulic sheet metal bending machine according to claim 3, characterized in that: A buffer strip (211) is fixedly mounted on a side wall surface of the sliding frame (21) close to the flap (22), and the buffer strip (211) is used to abut against the side wall surface of the flap (22).

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