A metal plate bending and shaping device

Abstract

The present application provides a metal plate bending and shaping device, belonging to the technical field of metal plate bending processing, which includes a bending machine and a material taking unit arranged on one side of the bending machine. The material taking unit includes: a first frame, which includes a first pallet that moves horizontally towards and away from the bending machine; a material taking assembly, which includes a lifting frame that moves up and down in the vertical direction and a plurality of second suction cups arranged above the lifting frame, and the plurality of second suction cups are respectively arranged on both sides of the lifting frame; a handling unit, which is arranged above the first pallet and includes a loading station and an unloading station. The first pallet can move between directly above the lifting frame and the loading station, and the handling unit is used to transport the plate above the first pallet to the unloading station. Through the cooperation of the material taking assembly, the first frame, and the handling unit, the auxiliary bending material handling work is carried out to improve the bending operation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of metal sheet bending processing, and particularly relates to a metal sheet bending and shaping device. Background Art

[0002] Metal cabinets are formed by bending sheets. When bending the sheets, a bending machine is used for operation. The processing process of the sheets includes: first cutting according to the size by a cutting device, then stacking the cut sheets by a material cart, transporting the stacked sheets to the front of the bending machine after stacking, and an operator bends the sheets one by one. Since the sheets are stacked, the sheet thickness is thin, and the edges of the sheets are not easy to pick up, thus affecting the operation efficiency. Summary of the Invention

[0003] The purpose of the present invention is to solve the above problems and provide a metal sheet bending and shaping device.

[0004] To achieve the above purpose, the technical solution of the present invention is: a metal sheet bending and shaping device, including a bending machine and a material taking unit arranged on one side of the bending machine. The material taking unit includes:

[0005] A first rack, including a first pallet that moves horizontally close to and away from the bending machine;

[0006] A material taking assembly, including a lifting frame that moves up and down in the vertical direction and a plurality of second suction cups arranged above the lifting frame. The plurality of second suction cups are arranged on both sides of the lifting frame;

[0007] A handling unit, arranged above the first pallet, including a loading station and an unloading station. The first pallet can move between directly above the lifting frame and the loading station. The handling unit is used to transport the sheet above the first pallet to the unloading station.

[0008] Further, the material taking assembly further includes a pressing member arranged above the lifting frame and a first elastic member arranged above the pressing member. The first elastic member can provide a vertically downward elastic force to the pressing member. A plurality of first suction cups are symmetrically arranged on both sides of the pressing member, and the lower end of the pressing member is located below the first suction cups.

[0009] Further, a connecting plate seat is arranged above the pressing member. A second rigid rod is vertically and guidingly arranged on the connecting plate seat, and the pressing member is arranged at the end of the second rigid rod.

[0010] Further, the first elastic member is a second compression spring sleeved on the second rigid rod.

[0011] Further, a displacement sensor is arranged between the connecting plate seat and the pressing member.

[0012] Further, along the horizontal direction perpendicular to the movement of the first pallet, arm plates are movably arranged on both sides of the connecting plate seat, and the first suction cup is arranged on the arm plate.

[0013] Further, second elastic members are arranged between the two arm plates and the connecting plate seat, and the elastic directions of the two second elastic members with respect to the connecting plate seat are opposite and the elastic forces are equal.

[0014] Further, two first guide rails are arranged on the connecting plate seat in parallel at intervals, and the two arm plates are in guiding sliding fit with the first guide rails.

[0015] Further, the handling unit includes two second guide rails arranged at intervals, a first movable frame slidably and guidingly arranged on the two second guide rails, and at least two suction cup assemblies arranged on the first movable frame at intervals.

[0016] Further, the suction cup assembly includes a second movable frame slidably arranged on the first movable frame, a power telescopic member vertically arranged on the second movable frame, and a second suction cup arranged at the lower end of the power telescopic member.

[0017] A metal plate bending and shaping device disclosed by the present invention has the following beneficial effects compared with the prior art:

[0018] 1. By providing a material taking unit, the material taking unit includes a material taking component, a first frame, and a handling unit that cooperate with each other. The material taking component sucks metal plates one by one through the lifting frame and the second suction cup arranged above the lifting frame. The first pallet on the first frame can move between directly above the lifting frame and the feeding station to transport the metal plates sucked by the material taking component. The handling unit transports the plates above the first pallet to the bending machine, assisting in the material handling work for bending and improving the bending operation efficiency.

[0019] 2. By arranging a pressing component between the first suction cups of the material taking component, the pressing member of the pressing component can apply a downward bending force to the first suction cup to bend it. When a metal plate is adsorbed below the adsorbed metal plate, since the top metal plate is bent, it is beneficial to generate a gap between adjacent metal plates, facilitating the rapid replenishment of external air between adjacent metal plates and separating the two metal plates, thus facilitating the separation of adjacent two plates.

[0020] 3. By setting the extending arm of the arm plate to include a first arm and a second arm in guiding fit, and a tension spring is arranged between the first arm and the second arm. When the pressing member presses the adsorbed metal plate, the first arm can move towards the middle area against the tension of the tension spring for displacement compensation, thereby ensuring that the pressing plate can effectively press the metal plate and cause the metal plate to bend. Description of the Drawings

[0021] Figure 1This is a schematic diagram of the overall structure of a metal plate bending and shaping device of the present invention.

[0022] Figure 2 This is a schematic diagram of the overall structure of the material taking unit in a metal plate bending and shaping device of the present invention.

[0023] Figure 3 This is a top view structure schematic diagram of the material taking unit in a metal plate bending and shaping device of the present invention.

[0024] Figure 4 This is a schematic diagram of the structure of the first frame in a metal plate bending and shaping device of the present invention.

[0025] Figure 5 For Figure 4 The partial enlarged structure schematic diagram of the A position in the present invention shown in the figure.

[0026] Figure 6 This is a schematic diagram of the overall structure of the lifting frame and the material taking assembly in a metal plate bending and shaping device of the present invention Figure 1 .

[0027] Figure 7 This is a schematic diagram of the overall structure of the lifting frame and the material taking assembly in a metal plate bending and shaping device of the present invention Figure 2 .

[0028] Figure 8 This is a schematic diagram of the structure of the material taking assembly in a metal plate bending and shaping device of the present invention.

[0029] Figure 9 This is a bottom view structure schematic diagram of the material taking assembly in a metal plate bending and shaping device of the present invention.

[0030] Figure 10 This is a schematic diagram of the structure of the arm plate and the material taking suction cup in a metal plate bending and shaping device of the present invention.

[0031] Figure 11 This is a bottom view structure schematic diagram of the arm plate and the material taking suction cup in a metal plate bending and shaping device of the present invention.

[0032] Figure 12 For Figure 10 The cross-sectional structure schematic diagram at the B-B position in the present invention shown in the figure.

[0033] Figure 13 For Figure 10 The cross-sectional structure schematic diagram at the C-C position in the present invention shown in the figure.

[0034] Figure 14 The bottom view structure schematic diagram of the elastic pressing assembly in a metal plate bending and shaping device of the present invention.

[0035] Figure 15Schematic diagram of the structure of the pressing component in a metal plate bending and shaping device of the present invention.

[0036] Figure 16 Schematic diagram of the structure of the lifting frame in a metal plate bending and shaping device of the present invention.

[0037] Figure 17 Schematic diagram of the structure when the material taking component takes the metal plate in a metal plate bending and shaping device of the present invention.

[0038] Figure 18 Schematic diagram of the overall structure of the lifting frame and the material taking component in another embodiment of a metal plate bending and shaping device of the present invention.

[0039] In the figure: 1, bending machine; 10, movable bracket; 2, first frame; 20, first support frame; 21, first pallet; 210, frame; 22, guide rod; 220, sliding member; 23, first lead screw; 230, first lead screw nut; 25, rolling member; 3, material taking unit; 31, lifting frame; 310, servo motor; 311, first plate; 312, guide member; 313, second lead screw; 314, second lead screw nut; 315, support plate; 316, vertical rod; 3160, sliding seat; 32, material taking component; 320, connecting beam; 321, support rod; 322, arm plate; 3220, hanging member; 3221, first arm; 3222, tension spring; 3223, second arm; 323, first suction cup; 3230, first rigid rod; 3231, first compression spring; 3232, end plate; 3233, ball joint; 3234, limiting step; 325, second elastic member; 326, air nozzle; 3270, connecting member; 32701, pin shaft; 3271, first swing arm; 32710, strip hole; 3272, first shaft; 32720, first wheel; 3273, second swing arm; 32730, second wheel; 328, limiting cylinder; 33, pressing component; 330, connecting plate seat; 331, guide sleeve; 332, pressing member; 333, second rigid rod; 334, second compression spring; 335, positioning column; 336, displacement sensor; 34, first guide rail; 4, handling unit; 41, second guide rail; 42, first movable frame; 43, suction cup assembly; 430, second movable frame; 431, power telescopic member; 432, second suction cup; 5, metal plate. Detailed description of the specific implementation

[0040] Now, the present invention will be further described in detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0041] Embodiment 1

[0042] Please refer to Figure 1, As a specific embodiment, the technical solution of the present invention is: a bending and shaping device for a metal plate 5, including a bending machine 1 and a material taking unit 3 arranged on one side of the bending machine 1. The material taking unit 3 includes:

[0043] The first frame 2, including a first pallet 21 that moves horizontally towards and away from the bending machine 1;

[0044] The material taking assembly 32, including a lifting frame 31 arranged to lift and lower in the vertical direction and a plurality of second suction cups 432 arranged above the lifting frame 31. The plurality of second suction cups 432 are respectively arranged on both sides of the lifting frame 31;

[0045] The handling unit 4 is arranged above the first pallet 21, including a loading station and an unloading station. The first pallet 21 can move between directly above the lifting frame 31 and the loading station. The handling unit 4 is used to transport the plate above the first pallet 21 to the unloading station.

[0046] As a specific embodiment, a bending and shaping device for a metal plate 5 provided in the present application includes: a bending machine 1. The bending machine 1 is a commonly used device in the prior art and is not an improvement point of the present application. The specific structure thereof will not be described in detail here. Refer to Figure 1 , The bending machine 1 includes a movable bracket 10. During use, the movable bracket 10 is used to support the metal plate 5 to be bent. The unloading station of the handling device is located directly above the movable bracket 10. Refer to Figures 2 - 5 , The first frame 2 includes a first support frame 20 arranged on the ground. The loading station is located directly above the first support frame 20.

[0047] Refer to Figures 2 - 5 , Two guide rods 22 are arranged at intervals on the first support frame 20, and a first lead screw 23 is arranged between the two guide rods 22. A sliding member 220 is slidably arranged on the guide rod 22 in a guiding manner. The first lead screw is threadedly connected with a first lead screw nut 230. The first pallet 21 includes a frame 210 and a plate member arranged on the upper surface of the frame 210. Both the first lead screw nut and the sliding member 220 are connected to the lower surface of the frame 210. Refer to Figure 4 , When the sliding member 220 is at the end of the guide rod 22 close to the bending machine 1, the first pallet 21 is directly above the first support frame 20. At the end of the first support frame 20 far from the bending machine 1, a rolling member 25 is also arranged. The axis of the rolling member 25 is perpendicular to the axis of the guide rod 22. The rolling member 25 is in supporting and rolling cooperation with the bottom surface of the frame 210. When the first lead screw is driven by a driving motor, it can drive the first lead screw nut to move, thereby driving the first pallet 21 to move in the horizontal direction.

[0048] Refer to Figure 6, the material taking assembly 32 includes a lifting frame 31 arranged vertically and a plurality of first suction cups 323 arranged above the lifting frame 31, refer to Figure 16 , the specific driving mode and specific cooperation structure of the lifting frame 31 are as follows: it includes a support plate 315 arranged at a distance from the ground. Four guide members 312 are arranged on the support plate 315 in a guiding manner. The lower end of the guide member 312 is connected to the first plate 311, and the upper end is connected to the lifting frame 31. A second lead screw nut 314 is arranged in an axially anti-creeper fit in the middle area of the first plate 311. The second lead screw nut 314 is connected to a vertically arranged second lead screw 313. The upper end of the second lead screw 313 is rotationally matched with the support plate 315, and the lower end is drivingly connected to a servo motor 310. By rotating the servo motor 310, the purpose of driving the lifting frame 31 to move in the vertical direction is achieved; as a further preferred method, two vertical rods 316 are also arranged on the first support frame 20. A sliding seat 3160 is slidably and guidingly matched on each vertical rod 316, and the sliding seat 3160 is connected to the lifting frame 31.

[0049] The working mode of a metal plate 5 bending and shaping device provided by this application is as follows:

[0050] Step 1: Stack the cut metal plates 5 on the lifting frame 31, control the lifting of the lifting frame 31, so that the upper surface of the uppermost metal plate 5 is not higher than the upper surface of the first support plate 21, and adjust the height of the second suction cup 432 so that the vertical distance between the lower surface of the second suction cup 432 and the upper surface of the first support plate 21 is between 10 cm and 20 cm, and obtain the initial distance between the second suction cup 432 and the first support plate 21;

[0051] Step 2: Obtain the initial height of the lifting frame 31 and the distance between the uppermost metal plate 5 and the upper surface of the first support plate 21;

[0052] Step 3: Control the lifting frame 31 to rise, lift the metal plate 5, and stop rising and hold when the uppermost metal plate 5 contacts the lower surface of the second suction cup 432;

[0053] Step 4: Control the first suction cup 323 to work to adsorb the metal plate 5, then control the lifting frame 31 to lower, and make the upper surface of the uppermost metal plate 5 of the lifting frame 31 lower than the lower surface of the first support plate 21 at this time;

[0054] Step 5: The first support plate 21 moves horizontally to the lower part of the first suction cup 323, the first suction cup 323 stops working, the metal plate 5 separates from the first suction cup 323 under the action of gravity, and the first support plate 21 holds the metal plate 5;

[0055] Step 6: The first pallet 21 moves horizontally to the loading station. Then, at the loading station, the handling device transports the metal plate 5 on the first pallet 21 to the unloading station and places the metal plate 5 on the movable bracket 10 at the unloading station, thereby completing the handling of the plates one by one, assisting the bending machine 1 to complete the bending operation, and improving the operation efficiency.

[0056] Further, in some preferred embodiments, the first pallet 21 may include a frame 210 and a plate body disposed on the frame 210. A lifting frame 31 is vertically disposed between the plate body and the first pallet 21 and the frame 210. The lifting frame 31 can drive the plate body to lift and lower in the vertical direction. Thus, when lifting the metal plate 5 adsorbed by the first suction cup 323, first control the lifting frame 31 to be in a contracted state. At this time, the upper surface of the plate body is lower than the metal plate 5 adsorbed on the first suction cup 323. Then move horizontally under the first suction cup 323, and then control the lifting frame 31 to drive the plate body to rise so that the plate body contacts the lower surface of the metal plate 5. Then control the first suction cup 323 to release the metal plate 5, so as to better lift the metal plate 5. Then control the lifting frame 31 to fall back to the contracted state and move horizontally to the loading station.

[0057] Embodiment 2

[0058] It can be understood that when the metal plates 5 are stacked, due to the very high surface finish of the metal plates 5, after the air between adjacent plates is squeezed out during the stacking of the plates, the plates are easily adsorbed due to negative pressure, especially when dealing with cold carbon steel plates. The surfaces of the plates are coated with an oil film, and the adsorption between adjacent plates is more frequent. When the plates are adsorbed, the material taking assembly 32 is likely to pick up and place two or more plates at a time. In order to reduce the occurrence of the above phenomenon, refer to Figure 6 、 Figure 7 As a further improvement, the present application provides a metal plate 5 bending and shaping device. Different from Embodiment 1, the material taking assembly 32 further includes a pressing member 332 disposed above the lifting frame 31 and a first elastic member disposed above the pressing member 332. The first elastic member can provide a vertically downward elastic force to the pressing member 332. A plurality of first suction cups 323 are symmetrically disposed on both sides of the pressing member 332, and the lower end of the pressing member 332 is located below the first suction cups 323.

[0059] Specifically, refer to Figure 6 、 Figure 7 、 Figure 13 、 Figure 17; The first suction cups 323 include four, which are respectively arranged at both ends of the lifting frame 31. A pressing assembly 33 is arranged between the two groups of suction cups. The pressing assembly 33 includes a strip-shaped pressing member 332 and a first elastic member applying force to the pressing member 332. The first elastic member provides a downward elastic force to the pressing member 332. In the initial state under the elastic force of the first elastic member, the lower end of the pressing member 332 is lower than the lower surface of the first suction cup 323. Refer to Figure 13 , the first suction cups 323 are hinged through ball joints 3233. Through this setting method, when the lifting frame 31 ascends, the uppermost metal plate 5 contacts the pressing member 332 first. At this time, it continues to move against the elastic force of the first elastic member until the metal plate 5 contacts the lower surface of the first suction cup 323. Then the first suction cup 323 generates negative pressure suction to adsorb and fix the metal plate 5. Then the lifting frame 31 moves downward. During the downward movement of the lifting frame 31, under the elastic force of the first elastic member, the pressing member 332 is pushed downward to provide a downward thrust to the metal plate 5 adsorbed by the first suction cup 323. Refer to Figure 17 , at this time, the metal plate 5 adsorbed by the first suction cup 323 can be bent, and both ends of the metal plate 5 are upturned. When there is a metal plate 5 adsorbed below the metal plate 5 adsorbed by the first suction cup 323, due to the bending of the uppermost metal plate 5, it is beneficial to generate a gap between adjacent metal plates 5, which is conducive to the rapid replenishment of external air between adjacent metal plates 5, separating the two metal plates 5, and thus facilitating the separation of adjacent two plates.

[0060] Furthermore, as a specific implementation manner, the specific structure of the pressing assembly 33 is: Refer to Figure 14 、 Figure 15 , a connecting plate seat 330 is arranged above the pressing member 332. A second rigid rod 333 is vertically and guidingly arranged on the connecting plate seat 330, and the pressing member 332 is arranged at the end of the second rigid rod 333. Specifically, the connecting plate seat 330 is horizontally arranged directly above the lifting frame 31. Along the movement direction of the first supporting plate 21, two second rigid rods 333 are spacedly arranged on the connecting plate seat 330. The upper end of the second rigid rod 333 is threadedly connected with a limit nut, and the lower end is connected with the strip-shaped pressing member 332. The first elastic member is two second compression springs 334 sleeved on the two second rigid rods 333. Under the elastic force of the second compression springs 334, the limit nut is limited above the connecting plate seat 330, and at this time the second compression springs 334 are in a compressed state.

[0061] Furthermore, the first elastic member is a second compression spring 334 sleeved on the second rigid rod 333.

[0062] Furthermore, as a preferred implementation manner, a displacement sensor 336 is arranged between the connecting plate seat 330 and the pressing member 332. Specifically, refer to Figure 14, which is the initial state of the pressing component 33. In the initial state, the displacement sensor 336 is at the working zero point. At this time, the distance between the lower end of the pressing member 332 and the lower surface of the first suction cup 323 in the vertical direction is known. When the lifting frame 31 moves up and down, the topmost metal plate 5 contacts the pressing member 332 first and squeezes the second compression spring 334 to push the pressing member 332 upward. At this time, the displacement sensor 336 can obtain the moving displacement of the pressing member 332, and the lifting and lowering of the lifting frame 31 can be controlled according to the displacement detected by the displacement sensor 336. When the topmost metal plate 5 contacts the lower surface of the first suction cup 323, the upward movement stops, so that the lifting and lowering of the lifting frame 31 can be controlled more accurately, ensuring the working reliability.

[0063] Further, as a specific implementation manner, along the horizontal direction perpendicular to the movement of the first support plate 21, arm plates 322 are movably arranged on both sides of the connecting plate seat 330, and the first suction cup 323 is arranged on the arm plate 322.

[0064] Reference Figures 6 - 11 , Figure 15 , two sets of guide sleeves 331 are arranged on the upper surface of the connecting plate seat 330, and a first guide rail 34 is inserted through each set of guide sleeves 331. The first guide rail 34 and the first guide sleeve 331 are locked by locking screws. The two ends of the two first guide rails 34 are slidably and guidingly fitted with the arm plates 322. Reference Figure 12 , Figure 13 , two first rigid rods 3230 are guidingly arranged on each arm plate 322. The lower end of the first rigid rod 3230 is hingedly connected to the first suction cup 323 through a ball hinge 3233. Through this setting method, the first suction cup 323 has a swinging amount in the vertical direction, so as to adapt to the bending state of the adsorbed metal plate 5. Each arm plate 322 is vertically connected with three support rods 321, and the lower ends of the three support rods 321 are connected with a horizontal connecting beam 320. The connecting beam 320 is horizontally guidingly fitted with the support plate 315. Through this setting method, the position of the arm plate 322 can be slidably adjusted according to the size of the metal plate 5 to be bent in the length direction of the first guide rail 34 to adapt to metal plates 5 of different sizes.

[0065] As a preferred implementation manner, reference Figure 13, it can be understood that when the first suction cup 323 adsorbs the metal plate 5 and until the metal plate 5 bends under the pressing force of the pressing member 332, the metal plate 5 will provide a force to the first suction cup 323 in the direction close to the pressing member 332. The arm plate 322 of the present application includes two protruding arms, and each protruding arm is provided with a first suction cup 323. The protruding arm includes a first arm 3221 and a second arm 3223 that are guided and fitted along a direction parallel to the first guide rail 34. The first suction cup 323 is arranged at the end of the first arm 3221. The second arm 3223 is connected to three support rods 321. A tension spring 3222 is arranged between the first arm 3221 and the second arm 3223. Under the pulling force of the tension spring 3222, the first arm 3221 abuts against the second arm 3223. Figure 13 The state shown is the initial state. When adsorbing the metal plate 5, the pressing member 332 presses the middle area of the metal plate 5 downward under the elastic force of the second compression spring 334. At this time, the first arm 3221 is pulled to move a certain displacement towards the middle area against the pulling force of the tension spring 3222 for horizontal displacement compensation, so as to ensure that the pressing member 332 can effectively press the metal plate 5 and make the metal plate 5 bend.

[0066] Embodiment III

[0067] Reference Figure 18 , the present application provides a metal plate 5 bending and shaping device, which is different from Embodiment II in that, referring to the figure, second elastic members 325 are arranged between the two arm plates 322 and the connecting plate seat 330, and the elastic directions of the two second elastic members 325 with respect to the connecting plate seat 330 are opposite and the elastic forces are equal. Specifically, referring to Figure 8 , Figure 9, wherein the second elastic member 325 is selected as a tensile elastic member, such as a tensile spring, a rubber elastic ring, etc. A hanging member 3220 for engaging with the second elastic member 325 is provided on the arm plate 322. Similarly, two second hanging members for engaging with the two second elastic members 325 are provided on the upper surface of the connecting plate seat 330. Through this setting method, the first guide rail 34 can be slidably engaged with the two arm plates 322 in a guiding manner, and the middle area of the first guide rail 34 is fixedly connected to the connecting plate seat 330. When the position of the arm plate 322 needs to be adjusted, the two arm plates 322 can be adjusted synchronously. At this time, the elastic force of the two second elastic members 325 ensures that the connecting plate seat 330 is at an equal distance from the two arm plates 322, so as to ensure that the pressing member 332 is between the two arm plates 322. Specifically, in the actual application process, a synchronous adjustment structure can be provided between the two sets of connecting beams 320. For example, a bidirectional lead screw can be provided below the support plate 315, and lead screw nuts are provided at both ends of the bidirectional lead screw. The two lead screw nuts are respectively connected to the two sets of connecting beams 320, so as to adjust the displacement of the two arm plates 322 in the direction of approaching and separating from each other by rotating the bidirectional lead screw. It should be noted that the second elastic member 325 is still in a stretched state that can provide a tensile force to the connecting plate seat 330 when the two arm plates 322 are at the closest position. The bidirectional synchronous adjustment structure formed by the cooperation of the bidirectional lead screw and the lead screw nut is a commonly used existing technology in the art, and the specific structure thereof is not shown and described in detail in this application. Those skilled in the art should understand.

[0068] Further, as a specific implementation manner, two first guide rails 34 are arranged on the connecting plate seat 330 in parallel at intervals, and the two arm plates 322 are slidably engaged with the first guide rails 34 in a guiding manner.

[0069] Embodiment 4

[0070] The present application provides a metal plate 5 bending and shaping device. Refer to Figure 12 , which is different from the above embodiment in that a first rigid rod 3230 is vertically and guidingly arranged at the end of the arm plate 322. A limiting step 3234 for limiting cooperation with the lower surface of the arm plate 322 is provided at the lower end of the first rigid rod 3230. An end plate 3232 is provided at the upper end of the first rigid rod 3230. A first compression spring 3231 is sleeved outside the first rigid rod 3230, and both ends of the first compression spring 3231 are respectively abutted against the end plate 3232 and the upper surface of the arm plate 322. Refer to Figure 13, on the upper surface of the arm plate 322, a limiting cylinder 328 is provided around the first compression spring 3231. In the initial state where the limiting step 3234 abuts against the lower surface of the arm plate 322, the end plate 3232 is spaced from the upper surface of the limiting cylinder 328. At this time, the distance between the upper end of the limiting cylinder 328 and the lower surface of the end plate 3232 is h1; when the pressing member 332 is in the initial state, the vertical distance between the lower end and the lower surface of the first suction cup 323 is h2, where h2 = h1 + (5 cm - 15 cm).

[0071] Furthermore, a connecting member 3270 is vertically provided on each arm plate 322. The connecting member 3270 is connected to the limiting steps 3234 on the two first rigid rods 3230. A pin shaft 32701 is horizontally provided at the upper end of the connecting member 3270. The axis of the pin shaft 32701 is perpendicular to the guiding direction of the first guide rail 34. A first swing arm 3271 is rotatably provided on the arm plate 322. The first swing arm 3271 is drivingly connected to a second swing arm 3273. The first shaft 3272 of the first swing arm 3271 and the second shaft of the second swing arm 3273 are both parallel to the pin shaft 32701. A first wheel 32720 is provided on the first shaft 3272, and a second wheel 32730 is provided on the second swing arm 3273. The first wheel 32720 and the second wheel 32730 are drivingly connected. Refer to Figure 12 , Figure 13 , in the initial state, the limiting step 3234 abuts against the lower surface of the arm plate 322. At this time, the states of the first swing arm 3271 and the second swing arm 3273 are as shown in Figure 12 , Figure 13 . The first swing arm 3271 is provided with a strip-shaped hole 32710 that cooperates with the pin shaft 32701. At this time, the states of the first swing arm 3271 and the second swing arm 3273 are as shown in Figure 12As shown in the figure, two groups of air nozzles 326 are arranged at intervals on the second swing arm 3273, and the two groups of air nozzles 326 are arranged staggeredly in the vertical direction. At this time, the end of the second swing arm 3273 deflects away from the pressing member 332. At this time, the air nozzles 326 do not contact the side surface of the metal plate 5 arranged on the lifting frame 31, which facilitates the lifting of the lifting frame 31. When taking and placing the metal plate 5, the first suction cup 323 contacts and adsorbs the metal plate 5. Then, when the lifting frame 31 descends, under the gravity of the metal plate 5 adsorbed by the first suction cup 323, the first rigid rod 3230 is pulled downwards, squeezing the first compression spring 3231, and driving the connecting member 3270 to move downwards in the vertical direction. During the downward movement of the connecting member 3270, the first swing arm 3271 is driven to swing through the pin shaft 32701. When swinging, the second swing arm 3273 is driven to swing through the first wheel 32720 and the second wheel 32730, so as to drive the lower end of the second swing arm 3273 to swing towards the direction close to the pressing member 332 and contact the side surface of the metal plate 5 arranged on the lifting frame 31. When the end plate 3232 contacts the upper end of the limiting cylinder 328, the first swing arm 3271 stops deflecting. At this time, the air nozzles 326 can be close to or contact the side surface of the metal plate 5. By arranging the air nozzles 326, gas can be ejected through the air nozzles 326, which is beneficial to the air flow to enter between the stacked metal plates 5 and is more convenient for separating adjacent metal plates 5. After the first suction cup 323 releases the metal plate 5 onto the first support plate 21, under the elastic force of the first compression spring 3231, the first swing arm 3271 returns to the initial position and will not interfere with the lifting plates.

[0072] Further, as a specific implementation manner, the first wheel 32720 and the second wheel 32730 can be selected from any one of a gear and a friction wheel, and a friction wheel is preferred.

[0073] Further, as a specific implementation manner, referring to Figures 1 - 3 , the handling unit 4 includes two second guide rails 41 arranged at intervals, a first movable frame 42 slidably guided on the two second guide rails 41, and at least two suction cup assemblies 43 arranged at intervals on the first sliding member 220. Specifically, the handling unit 4 includes two second guide rails 41 arranged at intervals and a first movable frame 42 slidably arranged on the second guide rails 41. The first movable frame 42 includes two cross beams perpendicular to the second guide rails 41. The first movable frame 42 can be driven by existing driving structures such as a ball screw drive structure and a rack and pinion linear reciprocating drive structure to achieve the purpose of moving the first movable frame 42 on the second guide rails 41. Three suction cup assemblies 43 are arranged on the first movable frame 42, and the three suction cup assemblies 43 can slide and adjust on the cross beam, so as to adjust the interval distance according to the size of the plate to be bent and adapt to plates of different sizes.

[0074] Specifically, the specific structure of each suction cup assembly 43 is as follows: the suction cup assembly 43 includes a second movable frame 430 slidably disposed on the first movable frame 42, a power telescopic member 431 vertically disposed on the second movable frame 430, and a second suction cup 432 disposed at the lower end of the power telescopic member 431. Specifically, the second movable frame 430 is in guiding sliding fit with the cross beam. The power telescopic member 431 is vertically disposed on the second movable frame 430. The power telescopic member 431 can be any one of a pneumatic telescopic rod and an electric telescopic rod. Preferably, it is a pneumatic telescopic rod. A suction cup seat is fixed at the lower end of the power telescopic member 431, and two second suction cups 432 are disposed on the suction cup seat. It should be noted that in this application, both the first suction cup 323 and the second suction cup 432 are air suction cups. The control methods of the first suction cup 323 and the second suction cup 432 both adopt the prior art, that is, by connecting a negative pressure air pump and a deflation valve. When it is necessary to adsorb the metal plate 5, the deflation valve is closed, and the negative pressure air pump is controlled to provide negative pressure suction for the suction cup. When it is necessary to release the metal plate 5, the negative pressure air pump is controlled to stop working, the deflation valve is controlled to open, and the negative pressure is released, so that the metal plate 5 can be released. The above control structure and method are the common structures and methods of suction cups in this field, and those skilled in the art should understand them.

[0075] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A metal plate bending and shaping device, comprising a bending machine (1) and a material taking unit (3) arranged on one side of the bending machine (1), characterized in that, The material taking unit (3) includes: The first rack (2), including a first pallet (21) that moves horizontally towards and away from the bending machine (1); The material taking assembly (32), including a lifting frame (31) arranged to lift and lower in the vertical direction and a plurality of second suction cups (432) arranged above the lifting frame (31), and the plurality of second suction cups (432) are arranged on both sides of the lifting frame (31); The handling unit (4) is arranged above the first pallet (21), including a loading station and an unloading station. The first pallet (21) can move between directly above the lifting frame (31) and the loading station, and the handling unit (4) is used to transport the sheet material above the first pallet (21) to the unloading station; The material taking assembly (32) further includes a pressing member (332) arranged above the lifting frame (31) and a first elastic member arranged above the pressing member (332). The first elastic member can provide a vertically downward elastic force to the pressing member (332). A plurality of first suction cups (323) are symmetrically arranged on both sides of the pressing member (332), and the lower end of the pressing member (332) is located below the first suction cups (323). Along the horizontal direction perpendicular to the movement of the first pallet (21), arm plates (322) are movably arranged on both sides of the connecting plate seat (330). The first suction cups (323) are arranged on the arm plates (322). Each arm plate is vertically connected with three support rods, and the lower ends of the three support rods are connected with a horizontal connecting beam. The arm plate includes two extending arms, and one first suction cup is arranged on each extending arm. The extending arm includes a first arm and a second arm that are guidingly fitted along the direction parallel to the first guide rail. The first suction cup is arranged at the end of the first arm. The second arm is connected with the three support rods. A tension spring is arranged between the first arm and the second arm, and under the action of the tension of the tension spring, the first arm abuts against the second arm.

2. The metal plate bending and shaping device according to claim 1, characterized in that, A connecting plate seat (330) is arranged above the pressing member (332), and a second rigid rod (333) is vertically guidingly arranged on the connecting plate seat (330). The pressing member (332) is arranged at the end of the second rigid rod (333).

3. A metal plate bending and shaping device according to claim 2, characterized in that, The first elastic member is a second compression spring (334) sleeved on the second rigid rod (333).

4. A metal plate bending and shaping device according to claim 2, characterized in that, A displacement sensor (336) is arranged between the connecting plate seat (330) and the pressing member (332).

5. A metal plate bending and shaping device according to claim 2, characterized in that, Second elastic members (325) are arranged between the two arm plates (322) and the connecting plate seat (330), and the elastic directions of the two second elastic members (325) with respect to the connecting plate seat (330) are opposite and the elastic forces are equal.

6. The metal plate bending and shaping device according to claim 5, characterized in that, Two first guide rails (34) are arranged in parallel and at intervals on the connecting plate seat (330), and the two arm plates (322) are guidingly slidably fitted with the first guide rails (34).

7. A metal plate bending and shaping device according to claim 1, characterized in that The handling unit (4) includes two second guide rails (41) arranged at intervals, a first movable frame (42) slidably and guidingly arranged on the two second guide rails (41), and at least two suction cup assemblies (43) arranged at intervals on the first movable frame (42).

8. A metal plate bending and shaping device according to claim 7, characterized in that, The suction cup assembly (43) includes a second movable frame (430) slidably disposed on the first movable frame (42), a power telescopic member (431) vertically disposed on the second movable frame (430), and a second suction cup (432) disposed at the lower end of the power telescopic member (431).

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