A hollow elevator guide rail punching device

Abstract

The present invention discloses a hollow elevator guide rail punching device, belonging to the field of punching devices, which includes a positioning and clamping component for clamping the hollow elevator guide rail. On both ends of the positioning and clamping component, a left punching component and a right punching component for punching the hollow elevator guide rail are arranged in parallel; a stepping feeding component is arranged on one side of the positioning and clamping component, and a conveyor line is arranged on the other side. A feeding component is arranged between the positioning and clamping component and the stepping feeding component, and a discharging component is arranged between the stepping feeding component and the conveyor line; the feeding component works to flip and fix the hollow elevator guide rail on the stepping feeding component to the positioning and clamping component. The discharging component and the conveyor line cooperate to transfer the hollow elevator guide rail on the positioning and clamping component. The V-shaped opening symmetric structure at the front end of the clamping drive block in the positioning and clamping component ensures the self-centering of the hollow elevator guide rail during the positioning process, effectively avoiding the position error of the connecting holes stamped at both ends due to the shape error of the hollow elevator guide rail.

Description

Technical Field

[0001] The present invention relates to a punching device for the interior of a long and hollow object, and more particularly to a punching device for a hollow elevator guide rail. Background Art

[0002] Elevator guide rails can be divided into three forms: T-shaped, L-shaped, and hollow according to different cross-sectional shapes. Due to a series of advantages such as light weight and material saving of hollow elevator guide rails, they are widely used.

[0003] In practical applications, it is necessary to connect several hollow elevator guide rails in series through connectors to adapt to elevators of different heights. Therefore, corresponding connection holes need to be processed at both ends of the hollow elevator guide rails. Currently, enterprises basically manually grasp the hollow elevator guide rails and insert them into the punching die for processing. This processing method has the following problems: 1) Due to certain errors in the shape of the hollow elevator guide rails, it often occurs that the hollow elevator guide rails are difficult to insert into the punching die, or there is poor fitting between the hollow elevator guide rails and the die, resulting in difficulties in punching; 2) Due to certain errors in the shape of the hollow elevator guide rails, when manually grasping the hollow elevator guide rails and inserting them into the punching die, self-centering cannot be achieved, resulting in certain position errors in the punched connection holes; 3) The punching at both ends of the hollow elevator guide rails is carried out in two times, and the operation efficiency is low; 4) Manual loading and unloading result in high labor intensity for workers. Summary of the Invention

[0004] The purpose of the present invention is to provide a punching device for a hollow elevator guide rail to realize full automation of loading, punching, and unloading during the processing of the hollow elevator guide rail, improve the processing quality and processing efficiency, and solve the shortcomings existing in the processing of the connection holes at both ends of the current hollow elevator guide rails.

[0005] To achieve the above object, the present invention is implemented by the following technical solution: A punching device for a hollow elevator guide rail includes a positioning and clamping component for clamping the hollow elevator guide rail, and a left punching component and a right punching component for punching the hollow elevator guide rail are arranged in parallel at both ends of the positioning and clamping component;

[0006] A stepping feeding component is arranged on one side of the positioning and clamping component, and a conveyor line is arranged on the other side. A loading component is arranged between the positioning and clamping component and the stepping feeding component, and a discharging component is arranged between the stepping feeding component and the conveyor line;

[0007] The loading component and the stepping feeding component cooperate to fix the hollow elevator guide rail on the stepping feeding component by flipping it onto the positioning and clamping component, and the discharging component and the conveyor line cooperate to transfer the hollow elevator guide rail after punching on the positioning and clamping component;

[0008] The feeding component includes two relatively arranged first lifting platforms. The structure of the first lifting platform is the same as that of the up-and-down lifting mechanism. A first turning shaft is installed between the top surfaces of the two first lifting platforms through a first pedestal bearing. A first motor is fixedly installed on one of the first lifting platforms through an L-shaped mounting plate. The output shaft of the first motor is connected to the first turning shaft through a coupling. At least two telescopic arm assemblies are installed on the first turning shaft, and the first motor drives the telescopic arm assemblies to rotate.

[0009] The telescopic arm assembly includes a fixed arm and a movable arm. The movable arm is sleeved on the fixed arm. An electric push rod is provided between the fixed arm and the movable arm. The two ends of the electric push rod are respectively connected to the fixed arm and the movable arm. A pneumatic gripper is fixed at the end of the movable arm, and a pair of forming fingers are installed on the pneumatic gripper. The shape after the two forming fingers are closed is consistent with the cross-section of the hollow elevator guide rail.

[0010] The right punching component has the same structure as the left punching component. The left punching component includes a moving platform and a punching machine. The punching machine is installed on the moving platform.

[0011] The moving platform includes a third support and a third flat plate. Two third guide rails are arranged in parallel on both sides of the top surface of the third support. A rodless cylinder is fixed on the top surface of the third support between the two third guide rails. The third flat plate is slidably installed on the two third guide rails through third sliders, and the third flat plate is connected to the slider on the rodless cylinder.

[0012] The punching machine includes a frame fixedly connected to the third flat plate and multiple third guide rods. A hydraulic cylinder is installed on the top surface of the frame. One end of the hydraulic rod of the hydraulic cylinder passes through a through hole in the middle of the top surface of the frame and is installed with an upper die mounting plate. Four third linear bearings are installed on the top surface of the frame in a linear array. The third guide rods correspondingly pass through the linear bearings and are connected to the upper die mounting plate. An upper die is also installed on the bottom surface of the upper die mounting plate. A lower die is installed on the bottom surface of the frame.

[0013] The positioning and clamping component includes at least two clamping components. The bottom surface of the clamping component is installed with a second lifting platform, and multiple clamping components are arranged in a linear array. The structure of the second lifting platform is the same as that of the up-and-down lifting mechanism.

[0014] The clamping component includes a clamp body. A clamping driving block is slidably arranged in the positioning groove of the clamp body. A pair of clamping claws are arranged in the V-shaped opening of the clamping driving block. The two clamping claws are elastically connected to the clamp body and correspondingly abut against the hypotenuse of the V-shaped opening of the clamping driving block. A clamping cylinder is installed on the surface of the clamp body away from the V-shaped opening of the clamping driving block. The piston rod of the clamping cylinder is connected to the clamping driving block. The clamping cylinder drives the clamping driving block to move back and forth to adjust the gap between the two clamping claws.

[0015] On the fixture body within the V-shaped opening of the clamping drive block, there are provided a pair of square through holes. The bottoms of the two clamping jaws are correspondingly placed within the square through holes. In the fixture body, there is a spring hole communicating the two square through holes, and a telescopic spring connecting the bottoms of the two clamping jaws is inserted into the spring hole.

[0016] The clamping jaw includes a jaw body connected to the telescopic spring. A fixed shaft is installed at the top end of the jaw body. At both ends of the top end of the jaw body, pressing rollers are installed through swing arms. A torsion spring is sleeved on the fixed shaft, and the torsion spring abuts against the pressing rollers.

[0017] A wedge block is integrally connected to the bottom surface of the jaw body. The slope of the inclined surface of the wedge block is equal to the slope of the V-shaped opening of the clamping drive block. An anti-detachment strip is fixed to the bottom surface of the wedge block.

[0018] In a further improvement of the solution of the present invention, the step feeding component includes a left storage rack, a right storage rack, and a feeding and shifting component. The left storage rack and the right storage rack are arranged in parallel on both sides of the feeding and shifting component. A plurality of slot positions for placing hollow elevator guide rails are equidistantly arranged on the top surfaces of the left storage rack and the right storage rack.

[0019] The feeding and shifting component includes a horizontal movement mechanism, a vertical lifting mechanism, and a bearing plate. A plurality of bearing slots matching the slot positions are provided on the bearing plate. The vertical lifting mechanism includes a first support. A first double-acting cylinder is installed in the through hole in the middle of the top surface of the first support. A plurality of first guide rods are arranged in an array on the top surface of the first support, and the first guide rods are movably installed on the top surface of the first support through linear bearings.

[0020] The horizontal movement mechanism includes a U-shaped bottom plate. The bottom surface of the U-shaped bottom plate is connected to the piston rod of the first double-acting cylinder and the first guide rods. Second guide rails are arranged in parallel on both sides of the U-shaped bottom plate. The bearing plate is slidably installed on the second guide rails through second sliders. A second double-acting cylinder is fixed to the edge of the U-shaped bottom plate, and the piston rod of the second double-acting cylinder is connected to the bearing plate through an L-shaped connecting plate. The second double-acting cylinder drives the bearing plate to move horizontally along the second guide rails.

[0021] In a further improvement of the solution of the present invention, the unloading component includes two second supports arranged opposite to each other. A second turning shaft is installed between the two second supports through a second pedestal bearing. A rotary cylinder is installed on any one of the second supports through an L-shaped mounting plate, and the rotating shaft of the rotary cylinder is connected to the second turning shaft. At least two turning arms with electromagnetic suction cups are fixedly connected to the shaft body of the second turning shaft.

[0022] In a further improvement of the solution of the present invention, the central points of the step feeding component, the loading component, the positioning and clamping component, the unloading component, and the conveyor line are in the same vertical plane.

[0023] According to the above technical solution, the present invention has at least the following effects:

[0024] 1) By clamping the V-shaped opening at the front end of the clamping drive block, the gap between the two clamping claws is changed to clamp the hollow elevator guide rail. The symmetrical structure of the V-shaped opening at the front end of the clamping drive block ensures the self-centering of the hollow elevator guide rail during the positioning process, effectively avoiding the position error of the connecting holes punched at both ends caused by the shape error of the hollow elevator guide rail.

[0025] 2) During the punching process, first insert the lower die installed in the punching machine into the inner holes at both ends of the hollow elevator guide rail, and then the second lifting platform of the positioning and clamping component drives the clamping assembly to move downward to ensure that the lower surface of the upper side of the hollow elevator guide rail fits on the upper surface of the lower die. This can effectively avoid the situation that the lower die cannot be inserted into the inner holes at both ends of the hollow elevator guide rail due to the too small inner hole of the hollow elevator guide rail, and can also effectively avoid the situation that there is a certain gap between the lower surface of the upper side of the hollow elevator guide rail and the upper surface of the lower die due to the too large inner hole of the hollow elevator guide rail, resulting in the inability to punch holes.

[0026] 3) During the punching process, the feeding, punching, and discharging are automated, and the punching operations at both ends of the hollow elevator guide rail are carried out simultaneously, with high operation efficiency and low labor intensity of workers. Description of the Drawings

[0027] Figure 1 Schematic structural diagram of the punching device for the hollow elevator guide rail

[0028] Figure 2 Schematic structural diagram of the stepping feeding component mechanism

[0029] Figure 3 Schematic structural diagram of the feeding and shifting component

[0030] Figure 4 Schematic structural diagram of the up and down lifting mechanism

[0031] Figure 5 Schematic structural diagram of the horizontal moving mechanism

[0032] Figure 6 Schematic structural diagram of the feeding component

[0033] Figure 7 Schematic structural diagram of the telescopic arm component

[0034] Figure 8 Schematic structural diagram of the left punching component

[0035] Figure 9 Schematic structural diagram of the positioning and clamping component

[0036] Figure 10 Schematic structural diagram of the clamping component

[0037] Figure 11 Top view of the clamping assembly

[0038] Figure 12 It is Figure 11 A - A sectional view of

[0039] Figure 13 Schematic diagram of the fixture body structure

[0040] Figure 14 Schematic diagram of the clamping jaw structure

[0041] Figure 15 Rear view of the clamping jaw

[0042] Figure 16 Schematic diagram of the unloading component structure

[0043] Figure 17 Schematic diagram of the hollow elevator guide rail structure

[0044] Among them: Among them, 1 is the stepping feeding component, 2 is the loading component, 3 is the left punching component, 4 is the positioning and clamping component, 5 is the unloading component, 6 is the conveyor line, 7 is the right punching component, 8 is the hollow elevator guide rail

[0045] 11 is the left storage rack, 12 is the feeding and shifting component, 13 is the right storage rack

[0046] 121 is the up - and - down lifting mechanism, 122 is the horizontal moving mechanism, 123 is the bearing plate, 123.1 is the bearing groove

[0047] 1211 is the first bracket, 1212 is the first guide rod, 1213 is the first linear bearing, 1214 is the first double - acting cylinder

[0048] 1221 is the U - shaped bottom plate, 1222 is the second slider, 1223 is the second guide rail, 1224 is the L - shaped connecting plate, 1225 is the second double - acting cylinder

[0049] 21 is the first upgrade platform, 22 is the first motor, 24 is the telescopic arm assembly, 25 is the first turning shaft, 26 is the support seat

[0050] 241 is the fixed arm, 242 is the electric push rod, 243 is the moving arm, 244 is the forming finger, 245 is the pneumatic gripper

[0051] 31 is the moving platform, 32 is the punching machine

[0052] 311 is the third guide rail, 312 is the third bracket, 313 is the third slider, 314 is the third flat plate, 315 is the rodless cylinder

[0053] 321 is the hydraulic cylinder, 322 is the third guide rod, 323 is the third linear bearing, 324 is the upper die mounting plate, 325 is the lower die and the frame 326

[0054] 41 is the second lifting platform, 42 is the clamping assembly

[0055] 421 fixture body, 422 clamping drive block, 423 clamping jaw, 424 clamping cylinder, 425 anti - detachment bar, 426 telescopic spring

[0056] 4231 jaw body, 4232 rotating arm, 4233 torsion spring, 4234 fixed shaft, 4235 pressing roller

[0057] 421.1 positioning groove, 421.2 square through - hole, 421.3 spring hole

[0058] 51 No.2 support, 52 slewing cylinder, 53 No.2 turning shaft, 54 turning arm, 55 No.2 pedestal bearing Embodiment

[0059] To make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0060] As Figure 1 shown, the hollow elevator guide rail punching device includes a stepping feeding component 1, a loading component 2, a left punching component 3, a positioning and clamping component 4, a discharging component 5, a conveying line 6 and a right punching component 7. The stepping feeding component 1, the loading component 2, two parallel - arranged positioning and clamping components 4, the discharging component 5 and the conveying line 6 are arranged in a straight line in sequence. The left punching component 3 and the right punching component 7 are respectively located on the left and right sides of the two parallel - arranged positioning and clamping components 4. The stepping feeding component 1 sequentially sends the hollow elevator guide rail 8 to be punched in front of the loading component 2. The loading component 2 sends the hollow elevator guide rail 8 to be punched to the positioning and clamping component 4. The positioning and clamping component 4 positions and clamps the hollow elevator guide rail 8 to be punched. The left punching component 3 and the right punching component 7 respectively punch corresponding connection holes at the left and right ends of the hollow elevator guide rail 8 to be punched. After punching, the discharging component 5 grabs and holds the hollow elevator guide rail 8 in the positioning and clamping component 4, flips it 180 degrees, and sends it onto the conveying line 6.

[0061] As Figure 2 shown, the stepping feeding component 1 includes a left storage rack 11, a feeding and shifting assembly 12 and a right storage rack 13. The left storage rack 11 and the right storage rack 13 are symmetrically arranged parallel to each other on the left and right sides of the feeding and shifting assembly 12. A plurality of slot positions for placing the hollow elevator guide rail 8 are equally spaced on the top surfaces of the left storage rack 11 and the right storage rack 13.

[0062] As Figure 3 shown, the feeding and shifting assembly 12 includes a vertical lifting mechanism 121, a horizontal moving mechanism 122 and a carrier plate 123. A plurality of loading slots 123.1 for placing the hollow elevator guide rail 8 are equally spaced on the top surface of the carrier plate 123. As Figure 4As shown, the up-and-down lifting mechanism 121 includes a first bracket 1211, a first guide rod 1212, a first linear bearing 1213, and a first double-acting cylinder 1214. One end of the linear bearing 1213 is a flange structure. Four first guide rods 1212 are movably installed on the top surface of the first bracket 1211 in a linear array through the linear bearing 1213. The first double-acting cylinder 1214 is installed in a through hole at the middle position of the top surface of the first bracket 1211. As Figure 5 shown, the horizontal moving mechanism 122 includes a U-shaped bottom plate 1221, a second slider 1222, second guide rails 1223, an L-shaped connecting plate 1224, and a second double-acting cylinder 1225. The second guide rails 1223 are installed on both sides of the U-shaped bottom plate 1221 in parallel. The second double-acting cylinder 1225 is installed at the middle position of the left end of the U-shaped bottom plate 1221. The carrier plate 123 is movably installed on the second guide rails 1223 through the second slider 1222 and is connected to the end of the piston rod of the second double-acting cylinder 1225 through the L-shaped connecting plate 1224. When the piston rod of the second double-acting cylinder 1225 extends and retracts, it drives the carrier plate 123 to move horizontally along the second guide rails 1223. The bottom surface of the U-shaped bottom plate 1221 is connected to the flange end of the first guide rod 1212 and is also connected to the end of the piston rod of the first double-acting cylinder 1214. When the piston rod of the first double-acting cylinder 1214 extends and retracts, it drives the horizontal moving mechanism 122 and the carrier plate 123 to move up and down. The working process of the step feeding component 1 is as follows: 1) Place a number of rod-shaped hollow elevator guide rails 8 in the slots on the top surfaces of the left storage rack 11 and the right storage rack 13; 2) The piston rod of the first double-acting cylinder 1214 extends, driving the horizontal moving mechanism 122 and the carrier plate 123 to move upward, so as to place the hollow elevator guide rails 8 placed in the slots on the top surfaces of the left storage rack 11 and the right storage rack 13 into the carrier slots 123.1 of the carrier plate 123; 3) The piston rod of the second double-acting cylinder 1225 extends, driving the carrier plate 123 and the hollow elevator guide rails 8 placed in the carrier slots 123.1 to move horizontally along the second guide rails 1223 by a certain distance; 4) The piston rod of the first double-acting cylinder 1214 retracts, driving the horizontal moving mechanism 122 and the carrier plate 123 to move downward, so as to place the hollow elevator guide rails 8 placed in the carrier slots 123.1 of the carrier plate 123 into the slots on the top surfaces of the left storage rack 11 and the right storage rack 13, completing one step of the hollow elevator guide rails 8; 5) The piston rod of the second double-acting cylinder 1225 retracts, driving the carrier plate 123 to move horizontally backward along the second guide rails 1223 by a certain distance and returning to the initial state.

[0063] As Figure 6 and Figure 7As shown in the figure, the loading component 2 includes a first lifting platform 21 and a loading assembly. The lifting mechanism of the first lifting platform 21 is the same as the up-and-down lifting mechanism 121 of the feeding and shifting assembly 12. The first lifting platform 21 drives the loading assembly to move up and down. The loading assembly includes a first motor 22, a telescopic arm assembly 24, a first turning shaft 25, and a first pedestal bearing 26. The first turning shaft 25 is installed between the left and right first lifting platforms 21 through the first pedestal bearing 26. The first motor 22 is installed on the top surface of the left first lifting platform 21 through an L-shaped mounting plate. The output shaft of the first motor 22 is connected to the first turning shaft 25 through a coupling. One end of the telescopic arm assembly 24 is installed on the first turning shaft 25. When the first motor 22 rotates, it drives the first turning shaft 25 and the telescopic arm assembly 24 mounted thereon to rotate. The telescopic arm assembly 24 includes a fixed arm 241, an electric push rod 242, a moving arm 243, a forming finger 244, and a pneumatic gripper 245. The moving arm 243 is sleeved on the fixed arm 241. One end of the electric push rod 242 is installed on the fixed arm 241, and the other end is installed on the moving arm 243, so that the electric push rod 242 can push the moving arm 243 to move relative to the fixed arm 241. The pneumatic gripper 245 is installed at the end of the moving arm 243. The forming finger 244 is installed on the pneumatic gripper 245. After the two forming fingers 244 are closed, their shape is consistent with the cross-sectional shape of the hollow elevator guide rail 8. The working process of the loading component 2 is as follows: 1) The first lifting platform 21 drives the loading assembly to rise a certain height; 2) The electric push rod 242 extends to push the moving arm 243 to move along the fixed arm 241; 3) The first motor 22 rotates to drive the first turning shaft 25 and the telescopic arm assembly 24 mounted thereon to rotate 90 degrees. The two forming fingers 244 installed on the pneumatic gripper 245 grasp the hollow elevator guide rail 8 placed in the top slots of the left storage rack 11 and the right storage rack 13 of the step feeding component 1 closest to the loading component 2; 4) The first motor 22 rotates in the reverse direction to drive the first turning shaft 25 and the telescopic arm assembly 24 mounted thereon to rotate 180 degrees in the reverse direction, and send the hollow elevator guide rail 8 to the positioning and clamping component 4.

[0064] As Figure 8As shown in the figure, the left punching component 3 includes a moving platform 31 and a punching machine 32, and the punching machine 32 is placed on the moving platform 31. The moving platform 31 includes a third guide rail 311, a third support 312, a third slider 313, a third flat plate 314, and a rodless cylinder 315. The third guide rails 311 are installed on both sides of the top surface of the third support 312 in parallel. The rodless cylinder 315 is installed between the third guide rails 311 on the top surface of the third support 312. The third flat plate 314 is movably installed on the third guide rails 311 through the third sliders 313 and is connected to the slider of the rodless cylinder 315. When the slider of the rodless cylinder 315 moves, it drives the third flat plate 314 to move horizontally along the third guide rails 311. The punching machine 32 includes a hydraulic cylinder 321, a third guide rod 322, a third linear bearing 323, an upper die mounting plate 324, a lower die 325, and a frame 326. The hydraulic cylinder 321 is installed on the top surface of the frame 326, and its hydraulic rod passes through the middle through hole on the top surface of the frame 326. Four third linear bearings 323 are installed on the top surface of the frame 326 in a linear array. The third guide rod 322 passes through the linear bearings 323, and its flange end is fixedly connected to the upper die mounting plate 324. The upper die mounting plate 324 is also connected to the end of the hydraulic rod of the hydraulic cylinder 321. The upper die (omitted in the figure) is installed on the upper die mounting plate 324, and the lower die 325 is installed on the bottom surface of the frame 326. The upper die and the lower die are designed and manufactured according to the shape of the holes to be punched at the left end of the hollow elevator guide rail. The right punching component 7 has the same structure as the left punching component 3, and the main difference is the different structures of the upper die and the lower die. The upper die and the lower die used in the right punching component 7 are designed and manufactured according to the shape of the holes to be punched at the right end of the hollow elevator guide rail. To facilitate the punching process, the lower die is inserted into the inner holes at both ends of the hollow elevator guide rail 8, and the outer dimension of the lower die is slightly smaller than the inner holes at both ends of the hollow elevator guide rail 8.

[0065] As Figure 9 shown, the positioning and clamping component 4 includes a second upgraded platform 41 and a clamping assembly 42. The clamping assembly 42 is installed on the second upgraded platform 41. The structure of the second upgraded platform 41 is the same as that of the up-and-down lifting mechanism 121 of the feeding and shifting component 12. The second upgraded platform 41 drives the clamping assembly 42 to move up and down to ensure that the lower die of the punching machine inserted into the inner holes at both ends of the hollow elevator guide rail 8 is in close fit with the inner holes at both ends of the hollow elevator guide rail 8.

[0066] As Figures 10 to 15As shown, the clamping assembly 42 includes a clamping body 421, a clamping drive block 422, clamping jaws 423, and a clamping cylinder 424. The clamping jaws 423 include a jaw body 4231, a rotating arm 4232, a torsion spring 4233, a fixed shaft 4234, and a pressing roller 4235. The fixed shaft 4234 is installed at the top of the jaw body 4231. The pressing roller 4235 is installed on the fixed shaft 4234 through the rotating arm 4232. The torsion spring 4233 is installed between the fixed shaft 4234 and the pressing roller 4235 to apply a certain pressing force to the pressing roller 4235. The front end of the clamping drive block 422 is a V-shaped opening. The clamping drive block 422 is inserted into the positioning groove 421.1 of the clamping body 421. The clamping cylinder 424 is installed at the rear end of the clamping body 421. The end of the piston rod of the clamping cylinder 424 is connected to one end of the clamping drive block 422. The extension and retraction of the piston rod of the clamping cylinder 424 drive the clamping drive block 422 to move in the positioning groove 421.1 of the clamping body 421. The jaw bodies 4231 of the two clamping jaws 423 pass through the square through-hole 421.2 of the clamping body 421, and their bottom surfaces are fixedly connected to the anti-detachment strip 425. The length of the anti-detachment strip 425 is greater than the length of the square through-hole 421.2 to ensure that the clamping jaws 423 are stuck in the square through-hole 421.2 of the clamping body 421. The two ends of the telescopic spring 426 passing through the spring hole 421.3 are connected to the jaw body 4231 of the clamping jaw 423. Under the action of the telescopic spring 426, the clamping jaws 423 are pushed apart, and a certain gap is formed between the two clamping jaws 423. A wedge block is integrally connected to the bottom surface of the jaw body 4231 of the clamping jaw 423. The slope of the inclined surface of the wedge block is equal to the slope of the V-shaped opening of the clamping drive block 422. Under the action of the spring force of the telescopic spring 426, the inclined surface of the wedge block of the jaw body 4231 of the clamping jaw 423 always fits on the side surface of the V-shaped opening at the front end of the clamping drive block 422. When the piston rod of the clamping cylinder 424 extends, the clamping drive block 422 moves forward in the positioning groove 421.1 of the clamping body 421, and the gap between the two clamping jaws 423 becomes smaller, clamping the hollow elevator guide rail 8. When the piston rod of the clamping cylinder 424 retracts, the clamping drive block 422 moves backward in the positioning groove 421.1 of the clamping body 421, and the gap between the two clamping jaws 423 becomes larger, releasing the clamping of the hollow elevator guide rail 8.

[0067] As Figure 16As shown in the figure, the unloading component 5 includes a second support 51, a rotary cylinder 52, a second turning shaft 53, a turning arm 54, and a second pedestal bearing 55. The second turning shaft 53 is installed between the left and right second supports 51 through the second pedestal bearing 55. The rotary cylinder 52 is installed on the top surface of the left second support 51 through an L-shaped mounting plate. The rotating shaft of the rotary cylinder 52 is connected to the second turning shaft 53. One end of the turning arm 54 is installed on the second turning shaft 53, and an electromagnetic chuck (omitted in the figure) is installed at the other end of the turning arm 54. When the rotary cylinder 52 rotates, it drives the second turning shaft 53 and the turning arm 54 mounted thereon to rotate. After the punching of the hollow elevator guide rail 8 is completed, the rotating shaft of the rotary cylinder 52 rotates 180 degrees, driving the second turning shaft 53 and the turning arm 54 to rotate 180 degrees. The electromagnetic chuck mounted on the turning arm 54 just touches the hollow elevator guide rail 8. The electromagnetic chuck is powered on and adsorbs the hollow elevator guide rail 8. The rotating shaft of the rotary cylinder 52 rotates reversely 180 degrees, driving the second turning shaft 53 and the turning arm 54 to rotate reversely 180 degrees, so as to turn the hollow elevator guide rail 8 adsorbed on the electromagnetic chuck and place it on the conveyor line 6. The electromagnetic chuck is powered off, and the hollow elevator guide rail 8 moves to the next working station along with the conveyor line 6.

[0068] The working process is as follows:

[0069] 1) The stepping feeding component 1 successively sends the hollow elevator guide rails 8 to be punched to the front of the feeding component 2.

[0070] 2) The feeding component 2 grabs a hollow elevator guide rail 8 and sends it to the positioning and clamping component 4, and the clamping assembly 42 grabs the hollow elevator guide rail 8 in the feeding component 2.

[0071] 3) The first lifting platform 21 of the feeding component 2 drives the feeding assembly to descend a certain height. The electric push rod 242 retracts, the moving arm 243 retracts along the fixed arm 241, and the first motor 22 rotates to drive the telescopic arm assembly 24 back to the initial state.

[0072] 4) The moving platform 31 of the left punching component 3 drives the punching machine 32 to move forward, so that the lower die 325 of the punching machine 31 installed on the left punching component 3 is inserted into the inner hole at the left end of the hollow elevator guide rail 8. The moving platform of the right punching component 7 drives the punching machine to move forward, so that the lower die of the punching machine installed on the right punching component 7 is inserted into the inner hole at the right end of the hollow elevator guide rail 8.

[0073] 5) The second lifting platform 41 of the positioning and clamping component 4 drives the clamping assembly 42 to move downwards to ensure that the upper wall of the inner cavity of the hollow elevator guide rail 8 fits on the upper surface of the lower die.

[0074] 6) The left punching component 3 and the right punching component 7 punch the upper side of the hollow elevator guide rail 8. After the punching is completed, the moving platform drives the punching machine to retract and return to the initial position.

[0075] 7) The unloading component 5 sends the hollow elevator guide rail 8 after punching to the conveyor line 6, and the hollow elevator guide rail 8 moves to the next working station along with the conveyor line 6.

[0076] As is known by common technical knowledge, the present invention can be implemented by other embodiments that do not depart from its spiritual essence or essential features. Therefore, the above-disclosed embodiments are illustrative in all aspects and not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are encompassed by the present invention.

Claims

1. A hollow elevator guide rail punching device, characterized in that, It includes a positioning and clamping component (4) for clamping a hollow elevator guide rail (8), and a left punching component (3) and a right punching component (7) for punching the hollow elevator guide rail (8) are arranged in parallel at both ends of the positioning and clamping component (4); A stepping feeding component (1) is arranged on one side of the positioning and clamping component (4), and a conveying line (6) is arranged on the other side. A feeding component (2) is arranged between the positioning and clamping component (4) and the stepping feeding component (1), and a discharging component (5) is arranged between the stepping feeding component (1) and the conveying line (6); The feeding component (2) and the stepping feeding component cooperate to fix the hollow elevator guide rail (8) on the stepping feeding component (1) by flipping and fixing it on the positioning and clamping component (4). The discharging component (5) and the conveying line (6) cooperate to transfer the hollow elevator guide rail (8) after punching on the positioning and clamping component (4); The feeding component (2) includes two relatively arranged first lifting platforms (21). The structure of the first lifting platform (21) is the same as that of the up-and-down lifting mechanism (121). A first rotating shaft (25) is installed between the top surfaces of the two first lifting platforms (21) through a first bearing with a seat (26). A first motor (22) is fixedly installed on one of the first lifting platforms (21) through an L-shaped mounting plate. The output shaft of the first motor (22) is connected to the first rotating shaft (25) through a coupling. At least two telescopic arm assemblies (24) are installed on the first rotating shaft (25), and the first motor (22) drives the telescopic arm assemblies (24) to rotate; The telescopic arm assembly (24) includes a fixed arm (241) and a movable arm (243). The movable arm (243) is sleeved on the fixed arm (241). An electric push rod (242) is arranged between the fixed arm (241) and the movable arm (243). The two ends of the electric push rod (242) are respectively connected to the fixed arm (241) and the movable arm (243). An air gripper (245) is fixed at the end of the movable arm (243), and a pair of forming fingers (244) are installed on the air gripper (245). The shape of the two forming fingers (244) after closing is consistent with the cross-section of the hollow elevator guide rail (8); The right punching component (7) has the same structure as the left punching component (3). The left punching component (3) includes a moving platform (31) and a punching machine (32). The punching machine (32) is installed on the moving platform (31); The moving platform (31) includes a third bracket (312) and a third flat plate (314). Two third guide rails (311) are arranged in parallel on both sides of the top surface of the third bracket (312). A rodless cylinder (315) is fixed on the top surface of the third bracket (312) between the two third guide rails (311). The third flat plate (314) is slidably installed on the two third guide rails (311) through third sliders (313), and the third flat plate (314) is connected to the slider on the rodless cylinder (315); The punching machine (32) includes a frame (326) fixedly connected to the third flat plate (314) and multiple third guide rods (322). A hydraulic cylinder (321) is installed on the top surface of the frame (326). One end of the hydraulic rod of the hydraulic cylinder (321) passes through a through hole in the middle of the top surface of the frame (326) and is installed with an upper die mounting plate (324). Four third linear bearings (323) are installed on the top surface of the frame (326) in a linear array. The third guide rods (322) correspondingly pass through the third linear bearings (323) and are connected to the upper die mounting plate (324). An upper die is further installed on the bottom surface of the upper die mounting plate (324), and a lower die is installed on the bottom surface of the frame (326). The positioning and clamping component (4) includes at least two clamping assemblies (42). A second upgrade platform (41) is installed on the bottom surface of the clamping assembly (42), and multiple clamping assemblies (42) are arranged linearly. The structure of the second upgrade platform (41) is the same as that of the up and down lifting mechanism (121). The clamping assembly (42) includes a clamp body (421). A clamping drive block (422) is slidably arranged in the positioning groove (421.1) of the clamp body (421). A pair of clamping claws (423) are arranged in the V-shaped opening of the clamping drive block (422). The two clamping claws (423) are elastically connected to the clamp body (421) and correspondingly abut against the hypotenuse of the V-shaped opening of the clamping drive block (422). A clamping cylinder (424) is installed on the surface of the clamp body (421) away from the V-shaped opening of the clamping drive block (422). The piston rod of the clamping cylinder (424) is connected to the clamping drive block (422). The clamping cylinder (424) drives the clamping drive block (422) to move back and forth to adjust the gap between the two clamping claws (423).

2. The hollow elevator guide rail punching device according to claim 1, wherein, The stepping feeding component (1) includes a left storage rack (11), a right storage rack (13) and a feeding and shifting component (12). The left storage rack (11) and the right storage rack (13) are arranged in parallel on both sides of the feeding and shifting component (12). A number of slots for placing the hollow elevator guide rail (8) are equally spaced on the top surfaces of the left storage rack (11) and the right storage rack (13). The feeding and shifting component (12) includes a horizontal moving mechanism (122), an up and down lifting mechanism (121) and a bearing plate (123). A number of bearing slots (123.1) matching the slots are provided on the bearing plate (123). The up and down lifting mechanism (121) includes a first bracket (1211). A first double-axis cylinder (1214) is installed in the through hole in the middle of the top surface of the first bracket (1211). A number of first guide rods (1212) are arranged in an array on the top surface of the first bracket (1211). The first guide rods (1212) are movably installed on the top surface of the first bracket (1211) through first linear bearings (1213). The horizontal movement mechanism (122) comprises a U-shaped bottom plate (1221), the bottom surface of the U-shaped bottom plate (1221) is connected to the piston rod of the No. 1 double-axis cylinder (1214) and the No. 1 guide rod (1212), and No. 2 guide rails (1223) are arranged in parallel on both sides of the U-shaped bottom plate (1221). The bearing plate (123) is slidably mounted on the No. 2 guide rail (1223) through the No. 2 slider (1222), and the No. 2 double-axis cylinder (1225) is fixed to the edge of the U-shaped bottom plate (1221). The piston rod of the No. 2 double-axis cylinder (1225) is connected to the bearing plate (123) through the L-shaped connecting plate (1224). The No. 2 double-axis cylinder (1225) drives the bearing plate (123) to move horizontally along the No. 2 guide rail (1223).

3. The hollow elevator guide rail punching device according to claim 1, characterized in that, A pair of square through holes (421.2) are provided on the clamping body (421) in the V-shaped opening of the clamping drive block (422); the bottoms of the two clamping claws (423) are correspondingly placed in the square through holes (421.2); a spring hole (421.3) communicating with the two square through holes (421.2) is provided in the clamping body (421); a telescopic spring (426) connecting the bottoms of the two clamping claws (423) is passed through the spring hole (421.3).

4. A hollow elevator guide rail punching device according to claim 3, characterized in that, The clamping claw (423) comprises a claw body (4231) connected to a telescopic spring (426); a fixed shaft (4234) is installed at the top of the claw body (4231); pressing rollers (4235) are installed at both ends of the top of the claw body (4231) via rotating arms (4232); a torsion spring (4233) is sleeved on the fixed shaft (4234), and the torsion spring (4233) abuts against the pressing roller (4235); The bottom surface of the gripper body (4231) is integrally connected with a wedge block, the slope of the wedge block is equal to the slope of the V-shaped opening of the clamping drive block (422), and the bottom surface of the wedge block is fixed with an anti-slip strip (425).

5. The hollow elevator guide rail punching device according to claim 1, characterized in that, The unloading component (5) comprises two second brackets (51) arranged opposite to each other, a second flip shaft (53) is installed between the two second brackets (51) via a second seat bearing (55), a rotary cylinder (52) is installed on any one of the second brackets (51) via an L-shaped mounting plate, and the rotary shaft of the rotary cylinder (52) is connected to the second flip shaft (53), and at least two flip arms (54) with electromagnetic suction cups are fixedly connected to the shaft body of the second flip shaft (53).

6. A hollow elevator guide rail punching device according to claim 1, characterized in that, The center points of the step-by-step feeding component (1), the loading component (2), the positioning and clamping component (4), the unloading component (5) and the conveying line (6) are in the same vertical plane.

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