A fast positioning platform for sheet metal processing

Abstract

A rapid positioning platform for sheet material processing belongs to the technical field of mechanical processing, and is designed to solve the problem that the existing sheet material processing positioning equipment has a poor positioning effect and is prone to damage to the sheet material. The present invention comprises a workbench and a negative pressure suction cup arranged below the workbench, a telescopic cylinder is arranged below the workbench on the periphery of a door ring, a motor, a transmission mechanism and an internal fixing mechanism are sequentially installed above the workbench from top to bottom, the door ring sheet material is adsorbed and fixed by the negative pressure suction cup, the motor and the transmission mechanism cause the internal fixing plate to move downward first, the internal fixing plate expands to position the inner side of the door ring sheet material, the telescopic cylinder extends to push the door ring sheet material to move, the door ring is quickly positioned under the joint action of the inside and outside, and then the inner fixing plate on the inside contracts first under the action of the resetting operation of the motor and the transmission mechanism, and then moves upward to leave the inner side of the door ring sheet material, so as to avoid affecting subsequent processing, the overall positioning speed is fast and will not damage the sheet material, and the operation is simple.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, and in particular to a rapid positioning platform for sheet material processing. Background Art

[0002] The car door knocker is made of A-pillar reinforcement plates, side reinforcement plates, B-pillar reinforcement plates and door sill reinforcement plates of different thicknesses and strengths that are laser welded and then stamped. The above four plates need to be positioned and fixed before welding.

[0003] The current existing method is to fix the four plates by negative pressure adsorption, and then set a pushing cylinder on the outside to make the four plates move closer to the middle and finally achieve the positioning of the four plates. However, due to the different initial positions of the reinforcing plates, the pushing cylinders on the outside are started at the same time, which may cause obstruction between the four plates. When the pushing cylinders are extended and pushed forward at the same time, it causes extrusion damage between the two adjacent plates. Summary of the invention

[0004] The purpose of the present invention is to provide a rapid positioning platform for plate processing, which solves the problem that the existing plate processing positioning equipment in the background technology has poor positioning effect and easily causes damage to the plate.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rapid positioning platform for sheet metal processing, comprising a workbench and a negative pressure suction cup arranged below the workbench, the negative pressure suction cup is used for negative pressure adsorption of a door ring, a telescopic cylinder is arranged below the workbench at the periphery of the door ring, the telescopic cylinder is used to push the door ring adsorbed by the negative pressure suction cup to move and complete the positioning, a roller is installed at the output end of the telescopic cylinder, the roller is used to reduce the friction between the door ring and the door ring, a distribution valve is installed at the top of the workbench near the edge, the distribution valve is connected to the negative pressure device through a pipeline, and the distribution valve is used to distribute the air pressure to the telescopic cylinder and the negative pressure suction cup;

[0006] A motor, a transmission mechanism and an internal fixing mechanism are installed above the workbench in sequence from top to bottom; an upper protective cover is installed on the top surface of the workbench; a groove is provided in the middle part of the workbench below the upper protective cover; the internal fixing mechanism is movably arranged below the upper protective cover; the transmission mechanism and the motor are arranged above the upper protective cover; the internal fixing mechanism includes a movable seat movably arranged below the upper protective cover; an internal fixing plate is slidably arranged below the movable seat; four groups of internal fixing plates are provided, and the four groups of internal fixing plates are radially slidably connected below the movable seat; the transmission mechanism and the motor are used to drive the internal fixing plate and the movable seat to rise and fall, and to drive the movable seat to radially contract or expand.

[0007] Furthermore, the negative pressure suction cup is arranged in multiple groups around the shape of the door ring, and the coverage area of ​​the negative pressure suction cup is smaller than the area of ​​the door ring. The negative pressure suction cup avoids the part of the door ring to be welded. A slide groove is arranged at the bottom of the movable seat, and a slider is fixedly connected to the top of the inner fixed plate, and the slider is slidably connected to the inner bottom of the slide groove.

[0008] Furthermore, the internal fixing mechanism also includes a sliding column rotatably connected to the middle part of the movable seat, the sliding column passes through the movable seat and the upper protective cover up and down, and one end of the sliding column at the bottom of the movable seat is fixedly connected to a turntable, and a guide groove passing through up and down is provided on the turntable, and there are four groups of guide grooves, and the four groups of guide grooves are spirally shaped. A guide column is fixedly installed on the top of the internal fixing plate, and the guide column is movably arranged in the guide groove. The four groups of internal fixing plates can be driven radially to approach and move away through the rotation of the sliding column and the turntable and under the guidance of the guide groove, the guide column, the slide groove and the slider. After the internal fixing plate moves away radially, it can limit the inner side of the door ring. After the internal fixing plate approaches radially, the limitation on the door ring is released to prevent affecting the welding.

[0009] Furthermore, the motor is fixedly installed above the workbench through a fixed frame, and the transmission mechanism includes a screw rod movably installed at the output end of the motor, and the bottom of the screw rod is fixedly connected to a gear plate. The transmission mechanism also includes a fixed seat fixedly installed above the workbench through the fixed frame, and a sliding rod is slidably connected through the fixed seat, and a threaded seat is fixedly connected to the top of the sliding rod, and the bottom of the sliding rod extends to the bottom of the upper protective cover and is fixedly connected to the movable seat, and the threaded seat is threadedly connected to the screw rod; when the motor drives the screw rod to rotate clockwise, the threaded seat moves downward under the guidance of the sliding rod and the fixed seat, and at the same time, the sliding rod drives the inner fixed plate and the movable seat to move downward, and the inner fixed plate moves downward from the inside of the groove to the inner side of the door ring.

[0010] Furthermore, the transmission mechanism also includes a rotating cylinder movably arranged below the threaded seat and inside the fixed seat, the rotating cylinder is not in contact with the fixed seat, and the top of the rotating cylinder is rotatably connected to the bottom of the threaded seat through a rotating ring.

[0011] Furthermore, the interior of the rotating cylinder is evenly distributed with teeth grooves, and the teeth grooves are meshed and connected with the toothed disc, and the bottom of the rotating cylinder is also fixedly connected with a second coupling disc, and the outer edge of the bottom of the second coupling disc is evenly distributed with teeth blocks, and the internal fixing mechanism also includes a first coupling disc rotatably connected in the middle of the upper protective cover, and the top of the first coupling disc is exposed from above the upper protective cover, and the outer edge of the top of the first coupling disc is evenly distributed with teeth blocks, the first coupling disc and the second coupling disc are arranged opposite to each other, and the first coupling disc is slidably connected to the sliding column; in the process of the threaded seat moving downward, the rotating cylinder also moves downward, and under the action of the meshing of the toothed disc and the teeth grooves, the second coupling disc rotates, and the second coupling disc gradually approaches the first coupling disc downward.

[0012] Furthermore, the output end of the motor is fixedly connected with a transmission block through a shaft, and the top of the screw rod is fixedly connected with a protrusion, and a sliding groove corresponding to the transmission block is arranged inside the protrusion, and the height of the sliding groove is greater than the thickness of the transmission block, and the cross-sections of the transmission block and the sliding groove are hexagonal; under the action of the internal fixing mechanism, the sliding rod, the threaded seat and the dead weight of the screw rod, the transmission block is always located in the upper position inside the sliding groove, and when the threaded seat moves downward to the top position of the fixed seat, the second engaging disk is just engaged with the first engaging disk. At this time, the rotation of the screw rod cannot make the threaded seat, the sliding rod and the movable seat continue to move downward. At this time, when the motor continues to drive the screw rod to rotate, the screw rod can move upward briefly until the transmission block is located in the lower position inside the sliding groove. In this process, the gear disk drives the rotating cylinder to rotate, the second engaging disk is engaged with the first engaging disk, and the rotating disk drives the inner fixed plate to expand outward. In the process of the inner fixed plate expanding outward to contact with the door ring, the inner fixed plate will not move downward, and will not cause friction and dislocation to the inner side of the door ring.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The present invention provides a rapid positioning platform for sheet material processing, which absorbs and fixes a door ring plate by a negative pressure suction cup, and the inner fixing plate is moved downward first by the cooperation of a motor and a transmission mechanism, and then the inner fixing plate is expanded to position the inner side of the door ring plate, and the outer telescopic cylinder is extended to push the door ring plate to move, and the door ring is quickly positioned under the joint action of the inside and outside, and then the inner fixing plate on the inside is contracted first under the action of the resetting operation of the motor and the transmission mechanism, and then moves upward to leave the inner side of the door ring plate to avoid affecting subsequent processing, and the overall positioning speed is fast without damaging the plate, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 3 It is a disassembled diagram of the overall structure of the present invention;

[0018] Figure 4 It is an exploded view of the internal fixing mechanism, transmission mechanism and motor structure of the present invention;

[0019] Figure 5 It is a schematic diagram of the structure of the internal fixing mechanism, transmission mechanism and motor part of the present invention;

[0020] Figure 6 It is an exploded view of the internal fixing mechanism, transmission mechanism and motor structure of the present invention;

[0021] Figure 7 This is a diagram of the internal fixing mechanism, transmission mechanism and motor structure of the present invention before and after movement.

[0022] In the figure: 1. workbench; 11. upper protective cover; 12. groove; 2. distribution valve; 3. telescopic cylinder; 4. negative pressure suction cup; 5. internal fixing mechanism; 51. internal fixing plate; 511. slider; 512. guide column; 52. movable seat; 521. slide groove; 53. turntable; 531. guide groove; 54. sliding column; 55. first coupling disk; 6. transmission mechanism; 61. screw rod; 611. toothed disk; 612. protrusion; 613. sliding groove; 62. threaded seat; 63. fixed seat; 64. sliding rod; 65. rotating cylinder; 651. rotating ring; 652. tooth groove; 653. second coupling disk; 7. motor; 71. transmission block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In order to solve the technical problem that the existing plate processing positioning equipment has poor positioning effect and easily causes plate damage, such as Figure 1-Figure 7 As shown, the following preferred technical solutions are provided:

[0025] like Figure 1-Figure 4 As shown, a rapid positioning platform for sheet metal processing comprises a workbench 1 and a negative pressure suction cup 4 arranged below the workbench 1, wherein multiple groups of negative pressure suction cups 4 are arranged around the shape of a door ring, and the coverage area of ​​the negative pressure suction cups 4 is smaller than the area of ​​the door ring, and the negative pressure suction cups 4 avoid the part of the door ring to be welded, and the negative pressure suction cups 4 are used for negative pressure adsorption of the door ring, and a telescopic cylinder 3 is arranged below the workbench 1 at the periphery of the door ring, and the telescopic cylinder 3 is used for pushing the door ring adsorbed by the negative pressure suction cup 4 to move and complete the positioning, and a roller is installed at the output end of the telescopic cylinder 3, and the roller is used for reducing the friction between the door ring and the door ring, and a distribution valve 2 is installed at the top of the workbench 1 near the edge, and the distribution valve 2 is connected to the negative pressure device through a pipeline, and the distribution valve 2 is used for distributing air pressure to the telescopic cylinder 3 and the negative pressure suction cup 4;

[0026] A motor 7, a transmission mechanism 6 and an internal fixing mechanism 5 are installed above the workbench 1 in sequence from top to bottom. An upper protective cover 11 is installed on the top surface of the workbench 1. A groove 12 is provided in the middle of the workbench 1 below the upper protective cover 11. The internal fixing mechanism 5 is movably arranged below the upper protective cover 11. The transmission mechanism 6 and the motor 7 are arranged above the upper protective cover 11. The internal fixing mechanism 5 includes a movable seat 52 movably arranged below the upper protective cover 11. An internal fixing plate 51 is slidably arranged below the movable seat 52. Four groups of internal fixing plates 51 are provided. The four groups of internal fixing plates 51 are radially slidably connected below the movable seat 52. The transmission mechanism 6 and the motor 7 are used to drive the internal fixing plate 51 and the movable seat 52 to rise and fall, and to drive the movable seat 52 to radially contract or expand.

[0027] like Figure 4-Figure 5 As shown, a slide groove 521 is provided at the bottom of the movable seat 52, a slider 511 is fixedly connected to the top of the inner fixed plate 51, and the slider 511 is slidably connected to the inner bottom of the slide groove 521. The inner fixing mechanism 5 also includes a sliding column 54 rotatably connected to the middle of the movable seat 52, and the sliding column 54 passes through the movable seat 52 and the upper protective cover 11 from top to bottom. The sliding column 54 is located at one end of the bottom of the movable seat 52 and is fixedly connected to a turntable 53. The turntable 53 is provided with a guide groove 531 that passes through from top to bottom, and the guide groove 531 is provided with four groups. The four groups of guide grooves 531 are spirally shaped, and a guide column 512 is fixedly installed on the top of the inner fixing plate 51. The guide column 512 is movably arranged in the guide groove 531, and rotates through the sliding column 54 and the turntable 53. Under the guidance of the guide grooves 531 and the guide columns 512 as well as the slide grooves 521 and the slider 511, the four groups of inner fixing plates 51 can be driven to radially approach and move away. After the inner fixing plate 51 moves away radially, it can limit the inner side of the door ring. After the inner fixing plate 51 approaches radially, the limit on the door ring is released to prevent affecting the welding.

[0028] like Figure 6 As shown, the motor 7 is fixedly installed above the workbench 1 through a fixed frame, and the transmission mechanism 6 includes a screw rod 61 movably installed at the output end of the motor 7, and the bottom of the screw rod 61 is fixedly connected to a toothed disc 611, and the transmission mechanism 6 also includes a fixed seat 63 fixedly installed above the workbench 1 through a fixed frame, and a sliding rod 64 is slidably connected through the fixed seat 63, and a threaded seat 62 is fixedly connected to the top of the sliding rod 64, and the bottom of the sliding rod 64 extends to the bottom of the upper protective cover 11 and is fixedly connected to the movable seat 52, and the threaded seat 62 is threadedly connected to the screw rod 61; when the motor 7 drives the screw rod 61 to rotate clockwise, the threaded seat 62 moves downward under the guidance of the sliding rod 64 and the fixed seat 63, and at the same time, the sliding rod 64 drives the inner fixed plate 51 and the movable seat 52 to move downward, and the inner fixed plate 51 moves downward from the inside of the groove 12 to the inner side of the door ring.

[0029] like Figure 6As shown, the transmission mechanism 6 also includes a rotating cylinder 65 movably arranged below the threaded seat 62 and inside the fixed seat 63. The rotating cylinder 65 does not contact the fixed seat 63. The top of the rotating cylinder 65 is rotatably connected to the bottom of the threaded seat 62 through a rotating ring 651. The interior of the rotating cylinder 65 is evenly distributed with tooth grooves 652, and the tooth grooves 652 are meshed and connected with the tooth disk 611. The bottom of the rotating cylinder 65 is also fixedly connected with a second coupling disk 653, and the outer edge of the bottom of the second coupling disk 653 is evenly distributed with tooth blocks.

[0030] The internal fixing mechanism 5 also includes a first coupling disk 55 rotatably connected in the middle of the upper protective cover 11, and the top of the first coupling disk 55 is exposed from above the upper protective cover 11, and the top outer edge of the first coupling disk 55 is evenly distributed with teeth blocks, and the first coupling disk 55 and the second coupling disk 653 are arranged opposite to each other, and the first coupling disk 55 is slidably connected to the sliding column 54; during the downward movement of the threaded seat 62, the rotating cylinder 65 also moves downward, and under the action of the engagement of the toothed disk 611 and the tooth groove 652, the second coupling disk 653 rotates, and the second coupling disk 653 gradually approaches the first coupling disk 55 downward.

[0031] The output end of the motor 7 is fixedly connected to a transmission block 71 through a shaft, and a protrusion 612 is fixedly connected to the top of the screw rod 61. A sliding groove 613 corresponding to the transmission block 71 is arranged inside the protrusion 612, and the height of the sliding groove 613 is greater than the thickness of the transmission block 71. The cross-sections of the transmission block 71 and the sliding groove 613 are hexagonal. Under the action of the self-weight of the internal fixing mechanism 5, the sliding rod 64, the threaded seat 62 and the screw rod 61, the transmission block 71 is always located at the upper position inside the sliding groove 613. When the threaded seat 62 moves downward to the top position of the fixed seat 63, the second combination plate 653 and the first combination plate 55 When the motor 7 continues to drive the screw rod 61 to rotate, the screw rod 61 can move upward briefly until the transmission block 71 is located at the lower inner position of the sliding groove 613. During this process, the toothed disc 611 drives the rotating cylinder 65 to rotate, and the second coupling disc 653 is coupled with the first coupling disc 55. The rotating disc 53 drives the inner fixed plate 51 to expand outward. During the process of the inner fixed plate 51 expanding outward to contact with the door ring, the inner fixed plate 51 will not move downward, and will not cause friction or dislocation to the inner side of the door ring.

[0032] Specifically, the entire positioning platform is installed on the mechanical arm, and the mechanical arm moves to cooperate with the negative pressure suction cup 4 to absorb the four door ring plates on the material pile. When positioning the door ring plate, the motor 7 is started first, and the motor 7 drives the screw rod 61 to rotate clockwise, so that the threaded seat 62 moves downward. When the threaded seat 62 moves downward, the sliding rod 64 makes the inner fixed plate 51 and the movable seat 52 move downward from the inside of the groove 12 to a position horizontal with the door ring. When the inner fixed plate 51 and the movable seat 52 are moved, the threaded seat 62 contacts the fixed seat 63, and the second coupling disk 653 engages with the first coupling disk 55. At this time, the threaded seat 62 cannot rotate. When the motor 7 drives the screw rod 61 to continue to rotate, the screw rod 61 moves slowly upward until the transmission block 71 contacts the bottom inner wall of the sliding groove 613. In the process of the screw rod 61 rotating clockwise and slowly moving upward, the toothed disk 611 drives the toothed disk 652 to move upward. The movable rotating cylinder 65 rotates, and the second coupling disk 653 drives the first coupling disk 55, and then drives the rotating disk 53 to rotate through the sliding column 54. Under the guidance of the guide groove 531, the guide column 512, the sliding block 511 and the sliding groove 521, the four groups of inner fixed plates 51 expand outwards and cooperate with the telescopic cylinder 3 to extend to position the door ring plate. After the positioning is completed, the telescopic cylinder 3 retracts, and the motor 7 rotates in the opposite direction. Under the action of the deadweight of the inner fixing mechanism 5 and the transmission mechanism 6, at the beginning of the reverse rotation of the motor 7, the screw rod 61 moves downward first, and the second coupling disk 653 drives the first coupling disk 55 to rotate counterclockwise and the rotating disk 53 to rotate, and the inner fixed plate 51 contracts. When the screw rod 61 cannot move downward, the screw rod 61 drives the threaded seat 62 to move upward, and the inner fixed plate 51 and the movable seat 52 move upward to the inside of the groove 12. The negative pressure suction cup 4 continues to maintain adsorption, and then the door ring is laser welded. The movement state of the transmission mechanism 6 and the motor 7 is shown in FIG. Figure 7 As shown, Figure 7 The left side is the initial state diagram. Figure 7 The right side shows the state where the threaded seat 62 moves downward to fit with the fixing seat 63 , and the inner fixing plate 51 is in an expanded state at this time.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rapid positioning platform for sheet metal processing, comprising a workbench (1) and a negative pressure suction cup (4) arranged below the workbench (1), characterized in that: The negative pressure suction cup (4) is used for negative pressure adsorption of the door ring. A telescopic cylinder (3) is arranged below the workbench (1) and on the periphery of the door ring. The telescopic cylinder (3) is used to push the door ring adsorbed by the negative pressure suction cup (4) to move and thereby complete positioning. A roller is installed at the output end of the telescopic cylinder (3). The roller is used to reduce friction between the door ring and the workbench (1). A distribution valve (2) is installed at a position near the edge of the top of the workbench (1). The distribution valve (2) is connected to the negative pressure device through a pipeline. The distribution valve (2) is used to distribute air pressure to the telescopic cylinder (3) and the negative pressure suction cup (4). A motor (7), a transmission mechanism (6) and an internal fixing mechanism (5) are sequentially installed above the workbench (1) from top to bottom; an upper protective cover (11) is installed on the top surface of the workbench (1); a groove (12) is arranged in the middle of the workbench (1) below the upper protective cover (11); the internal fixing mechanism (5) is movably arranged below the upper protective cover (11); the transmission mechanism (6) and the motor (7) are arranged above the upper protective cover (11); the internal fixing mechanism (5) comprises a movable seat (52) movably arranged below the upper protective cover (11); an internal fixing plate (51) is slidably arranged below the movable seat (52); four groups of the internal fixing plates (51) are arranged; the four groups of internal fixing plates (51) are radially slidably connected below the movable seat (52); the transmission mechanism (6) and the motor (7) are used to drive the internal fixing plate (51) and the movable seat (52) to rise and fall, and drive the movable seat (52) to radially contract or expand; The inner fixing mechanism (5) further comprises a sliding column (54) rotatably connected to the middle of the movable seat (52), the sliding column (54) vertically penetrating the movable seat (52) and the upper protective cover (11), one end of the sliding column (54) located at the bottom of the movable seat (52) is fixedly connected to a turntable (53), the turntable (53) is provided with a guide groove (531) penetrating vertically, and the guide groove (531) is provided with four groups, the four groups of guide grooves (531) are spiral-shaped, and a guide column (512) is fixedly installed on the top of the inner fixing plate (51), and the guide column (512) is movably arranged in the guide groove (531); The motor (7) is fixedly mounted above the workbench (1) via a fixing frame, the transmission mechanism (6) comprises a screw rod (61) movably mounted on the output end of the motor (7), the bottom of the screw rod (61) being fixedly connected to a toothed disc (611), the transmission mechanism (6) further comprises a fixing seat (63) fixedly mounted above the workbench (1) via the fixing frame, a sliding rod (64) slidably connected to the fixing seat (63), a threaded seat (62) being fixedly connected to the top of the sliding rod (64), the bottom of the sliding rod (64) extending to below the upper protective cover (11) and being fixedly connected to the movable seat (52), the threaded seat (62) being threadedly connected to the screw rod (61); The transmission mechanism (6) further comprises a rotating cylinder (65) movably arranged below the threaded seat (62) and inside the fixed seat (63); the rotating cylinder (65) is not in contact with the fixed seat (63); the top of the rotating cylinder (65) is rotatably connected to the bottom of the threaded seat (62) via a rotating ring (651); The rotating cylinder (65) has teeth grooves (652) evenly distributed inside, and the teeth grooves (652) are meshedly connected to the toothed disc (611); the bottom of the rotating cylinder (65) is also fixedly connected to a second coupling disc (653), and the outer edge of the bottom of the second coupling disc (653) has teeth blocks evenly distributed; The internal fixing mechanism (5) further comprises a first coupling disk (55) rotatably connected to the middle of the upper protective cover (11), and the top of the first coupling disk (55) is exposed from above the upper protective cover (11), and teeth are evenly distributed on the outer edge of the top of the first coupling disk (55), the first coupling disk (55) and the second coupling disk (653) are arranged opposite to each other, and the first coupling disk (55) is slidably connected to the sliding column (54); The output end of the motor (7) is fixedly connected to a transmission block (71) via a shaft, the top of the lead screw (61) is fixedly connected to a protrusion (612), a sliding groove (613) corresponding to the transmission block (71) is provided inside the protrusion (612), the height of the sliding groove (613) is greater than the thickness of the transmission block (71), and the cross-sections of the transmission block (71) and the sliding groove (613) are hexagonal.

2. A rapid positioning platform for sheet metal processing as claimed in claim 1, characterized in that: The negative pressure suction cups (4) are arranged in multiple groups around the shape of the door ring, and the coverage area of ​​the negative pressure suction cups (4) is smaller than the area of ​​the door ring, and the negative pressure suction cups (4) avoid the part of the door ring to be welded.

3. A rapid positioning platform for sheet metal processing as claimed in claim 1, characterized in that: The bottom of the movable seat (52) is provided with a slide groove (521), the top of the inner fixed plate (51) is fixedly connected with a slide block (511), and the slide block (511) is slidably connected to the lower part of the slide groove (521).

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