Fixture for preventing reinforcing flitch of long tubular structural member from deforming after automatic assembly welding

Abstract

The utility model relates to the technical field of clamps, and discloses a clamp for preventing a reinforced flitch of a long tubular structural member from deforming after automatic assembly welding, which comprises a frame, a pressing mechanism, a centering clamping mechanism, a hydraulic rotary pressing mechanism and a hydraulic reversible deformation center positioning mechanism, the pressing mechanism, the centering clamping mechanism, the hydraulic rotary pressing mechanism and the hydraulic reversible deformation center positioning mechanism are all installed on the frame through bolts, and the pressing mechanism is composed of an air cylinder protective cover, a powerful clamping air cylinder, an L-shaped installation plate, a copper pressing block, an adjusting gasket set and a pressing arm. Workpieces are automatically clamped and positioned through a hydraulic and pneumatic system, according to the size and specification of the assembled and welded workpieces, the PLC system is used for automatically calculating and automatically adjusting the reversible deformation amount, hydraulic reversible deformation straightening is conducted, the carrying robot is matched with the 3D visual system, automatic workpiece feeding and discharging are achieved, assembling is completed, flexible and automatic production can be achieved, the production efficiency is improved, and the production cost is reduced. The method is suitable for wide popularization and use.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamps, and in particular relates to a clamp for preventing a reinforcement plate of a long tubular structural member from being deformed after automatic assembly welding. Background Art

[0002] At present, the reinforcing plate welding fixture for long tubular structural parts is manually clamped and fixed, and is manually straightened by a pressure straightening machine after welding. If the product is changed, it is necessary to manually adjust the positioning and clamping components and adjust the pressure value of the correction. The work intensity is large, the time consumption is long, and the efficiency is low, which is not conducive to the flexible production and automated production of various models. In view of this, the utility model is proposed to solve the above problems by using a fixture for preventing the deformation of the reinforcing plate of a long tubular structural part after automatic welding. Utility Model Content

[0003] In order to solve the above technical problems of high work intensity, long time consumption, low efficiency, and disadvantageous flexible production and automated production of various models, the basic concept of the technical solution adopted by the utility model is:

[0004] A clamp for preventing deformation of a reinforcement plate of a long tubular structural member after automatic welding, comprising a frame, a clamping mechanism, a centering clamping mechanism, a hydraulic rotary clamping mechanism and a hydraulic anti-deformation center positioning mechanism, wherein the clamping mechanism, the centering clamping mechanism, the hydraulic rotary clamping mechanism and the hydraulic anti-deformation center positioning mechanism are all mounted on the frame by bolts, the clamping mechanism is composed of a cylinder guard, a strong clamping cylinder, an L-shaped mounting plate, a copper pressure block, an adjustment gasket group and a clamping arm, the centering clamping mechanism is composed of a first mounting seat, a synchronous opening and closing clamping claw cylinder, a first detection sensor, a first mounting bracket and a clamping block, The hydraulic rotary clamping mechanism is composed of a first hydraulic cylinder, a second mounting seat, a rotating shaft, a second mounting bracket, a second detection sensor, a baffle, a steel ball, a copper sleeve, an end flange, a pin shaft and a pressure plate. The second mounting bracket and the second detection sensor are each provided at two locations. The hydraulic anti-deformation center positioning mechanism is composed of a second hydraulic cylinder, a mounting plate, a connecting flange, a connecting plate, a spring, a guide shaft, an oil-free bushing, a three-jaw chuck, a third mounting seat, a claw, a third detection sensor, a top block and a distance sensor. The connecting plate is provided at two locations, and the spring, the guide shaft and the oil-free bushing are each provided at four locations.

[0005] As a preferred embodiment of the present utility model, the clamping mechanism is provided at six locations, and the centering clamping mechanism, the hydraulic rotary clamping mechanism and the hydraulic anti-deformation center positioning mechanism are each provided at two locations.

[0006] As a preferred embodiment of the utility model, the cylinder shield, the L-shaped mounting plate, the clamping arm and the strong clamping cylinder are connected by bolts, and the copper pressure block, the adjustment gasket group and the clamping arm are connected by bolts.

[0007] As a preferred embodiment of the utility model, the synchronous opening and closing jaw cylinder is connected to the first mounting seat by bolts, the clamping block is connected to the synchronous opening and closing jaw cylinder by bolts, the first mounting bracket is connected to the clamping block by bolts, and the first detection sensor is installed on the first mounting bracket.

[0008] As a preferred embodiment of the utility model, the first hydraulic cylinder, the second mounting bracket, the baffle and the second mounting seat are connected by bolts, the rotating shaft and the first hydraulic cylinder are floatingly connected by a T-slot, the pressure plate and the rotating shaft are floatingly connected by a pin shaft, the pin shaft is fixed with a retaining spring, the copper sleeve is installed between the rotating shaft and the second mounting seat, the steel ball is installed in the spiral groove of the rotating shaft, and the second detection sensor is installed on the second mounting bracket.

[0009] As a preferred embodiment of the utility model, the mounting plate and the oil-free bushing are both installed on the frame, the second hydraulic cylinder is fixedly connected to the mounting plate by bolts, the connecting flange is connected to the second hydraulic cylinder by threads, the connecting flange, connecting plate, guide shaft, three-jaw chuck, third detection sensor, top block, distance sensor and third mounting seat are connected by bolts, the spring and oil-free bushing are both installed on the guide shaft, and the claws are connected to the three-jaw chuck by bolts.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. The utility model automatically clamps and positions the workpiece through the hydraulic and pneumatic systems. According to the size and specifications of the welded workpiece, the PLC system automatically calculates and adjusts the anti-deformation amount, performs hydraulic anti-deformation straightening, and realizes automatic loading and unloading of the workpiece through the handling robot in conjunction with the 3D vision system. In conjunction with the welding robot system, flexible, intelligent and automated production can be achieved.

[0012] 2. The utility model controls the opening of the three-jaw chuck through the PLC system, the synchronous opening and closing of the clamping jaws and the cylinder for centering clamping, and the retraction of the hydraulic rotary clamping mechanism to automatically clamp the workpiece. After completion, the reinforcing plates are identified and located through the 3D visual camera, and the robot grabs the corresponding reinforcing plates in turn and puts them in the correct position. The clamping mechanism flips and clamps, and the workpiece is automatically welded after completion. After the automatic welding is completed, the deformation of the structural parts after the welding is completed is calculated through the feedback value of the distance sensor, and then the pressure value output by the hydraulic system is automatically adjusted through the PLC, and the extension amount of the hydraulic cylinder is indirectly controlled, thereby realizing automatic anti-deformation to straighten the workpiece.

[0013] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In the attached picture:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the framework structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the clamping mechanism of the utility model;

[0018] Figure 4 This is a schematic diagram of the centering clamping mechanism structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the hydraulic rotary clamping mechanism of the utility model;

[0020] Figure 6 It is a structural schematic diagram of the hydraulic anti-deformation center positioning mechanism of the utility model.

[0021] In the figure: 01, frame; 02, clamping mechanism; 021, cylinder shield; 022, strong clamping cylinder; 023, L-shaped mounting plate; 024, copper pressure block; 025, adjustment gasket set; 026, clamping arm; 03, centering clamping mechanism; 031, first mounting seat; 032, synchronous opening and closing clamping jaw cylinder; 033, first detection sensor; 034, first mounting bracket; 035, clamping block; 04, hydraulic rotary clamping mechanism; 041, first hydraulic cylinder; 042, second mounting seat; 043, rotating shaft; 044, second mounting bracket; 0 45. Second detection sensor; 046. Baffle; 047. Steel ball; 048. Copper sleeve; 049. End flange; 0410. Pin; 0411. Pressure plate; 05. Hydraulic anti-deformation center positioning mechanism; 051. Second hydraulic cylinder; 052. Mounting plate; 053. Connecting flange; 054. Connecting plate; 055. Spring; 056. Guide shaft; 057. Oil-free bushing; 058. Three-jaw chuck; 059. Third mounting seat; 0510. Claw; 0511. Third detection sensor; 0512. Top block; 0513. Distance sensor. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0023] like Figures 1 to 6 Shown

[0024] A clamp for preventing deformation of a reinforcement plate of a long tubular structure after automatic welding, comprising a frame 01, a clamping mechanism 02, a centering clamping mechanism 03, a hydraulic rotary clamping mechanism 04 and a hydraulic anti-deformation center positioning mechanism 05, wherein the clamping mechanism 02 is provided at six locations, and the centering clamping mechanism 03, the hydraulic rotary clamping mechanism 04 and the hydraulic anti-deformation center positioning mechanism 05 are provided at two locations, and the clamping mechanism 02, the centering clamping mechanism 03, the hydraulic rotary clamping mechanism 04 and the hydraulic anti-deformation center positioning mechanism 05 are symmetrically mounted on the frame 01 by bolts, and the clamping mechanism 02 is composed of a cylinder guard 021, a strong clamping cylinder 022, an L-shaped mounting plate 023, a copper pressure block 024, an adjustment gasket group 025 and a clamping arm 026, and the centering clamping mechanism 03 is composed of a first mounting seat 031, a synchronous opening and closing clamping claw cylinder 032, a first detection sensor 033, a first mounting bracket 034 and a clamp The hydraulic rotary clamping mechanism 04 is composed of a first hydraulic cylinder 041, a second mounting seat 042, a rotating shaft 043, a second mounting bracket 044, a second detection sensor 045, a baffle 046, a steel ball 047, a copper sleeve 048, an end flange 049, a pin 0410 and a pressure plate 0411. The second mounting bracket 044 and the second detection sensor 045 are each provided at two locations. The hydraulic anti-deformation center positioning mechanism 05 is composed of a second hydraulic cylinder 051, a mounting plate 052, a connecting flange 053, a connecting plate 054, a spring 055, a guide shaft 056, an oil-free bushing 057, a three-jaw chuck 058, a third mounting seat 059, a clamping claw 0510, a third detection sensor 0511, a top block 0512 and a distance sensor 0513. The connecting plate 054 is provided at two locations, and the spring 055, the guide shaft 056 and the oil-free bushing 057 are each provided at four locations.

[0025] In a specific embodiment, the cylinder guard 021, the L-shaped mounting plate 023, the clamping arm 026 and the strong clamping cylinder 022 are connected by bolts, the copper pressure block 024, the adjustment gasket group 025 and the clamping arm 026 are connected by bolts, and the reinforcing plate is clamped by the action of the strong clamping cylinder 022 to ensure that the reinforcing plate and the long tubular structure are tightly fitted during welding, the synchronous opening and closing jaw cylinder 032 is connected to the first mounting seat 031 by bolts, the clamping block 035 is connected to the synchronous opening and closing jaw cylinder 032 by bolts, the first mounting bracket 034 is connected to the clamping block 035 by bolts, and the first detection sensor 033 is installed on the first mounting bracket 034. The automatic centering, clamping and positioning functions of the workpiece are realized by the action time of the synchronous opening and closing jaw cylinder 032, and the first detection sensor 033 is used to detect whether the clamping is in place.

[0026] Furthermore, the first hydraulic cylinder 041, the second mounting bracket 044, the baffle 046 and the second mounting seat 042 are connected by bolts, the rotating shaft 043 and the first hydraulic cylinder 041 are floatingly connected through a T-slot, the pressure plate 0411 and the rotating shaft 043 are floatingly connected through a pin 0410, the pin 0410 is fixed with a retaining spring, the copper sleeve 048 is installed between the rotating shaft 043 and the second mounting seat 042 to reduce friction, the steel ball 047 is installed in the spiral groove of the rotating shaft 043, and is tightened with a set screw to realize automatic rotation when the rotating shaft 043 is extended and retracted, the second detection sensor 045 is installed on the second mounting bracket 044, and is used to detect the extension and retraction status of the first hydraulic cylinder 041. The action of the first hydraulic cylinder 041 can automatically realize the clamping and loosening of the workpiece by the pressure plate 0411.

[0027] Furthermore, the mounting plate 052 and the oil-free bushing 057 are both installed on the frame 01, the second hydraulic cylinder 051 is fixedly connected to the mounting plate 052 by bolts, the connecting flange 053 is connected to the second hydraulic cylinder 051 by threads, the connecting flange 053, the connecting plate 054, the guide shaft 056, the three-jaw chuck 058, the third detection sensor 0511, the top block 0512, the distance sensor 0513 and the third mounting seat 059 are connected by bolts, the spring 055 and the oil-free bushing 057 are both installed on the guide shaft 056, the clamping jaw 0510 is connected to the three-jaw chuck 058 by bolts, the workpiece can be reversely deformed by the action of the second hydraulic cylinder 051, the workpiece hole can be centrally positioned by the action of the three-jaw chuck 058, the presence or absence of the workpiece is detected by the set third detection sensor 0511, and the required amount of reverse deformation is detected by the set distance sensor 0513.

[0028] The implementation principle of a fixture for preventing deformation of a reinforcement plate of a long tubular structural member after automatic welding is as follows:

[0029] When in use, through the clamping mechanism 02 which is set up, and the clamping mechanism 02 is composed of a cylinder shield 021, a strong clamping cylinder 022, an L-shaped mounting plate 023, a copper pressure block 024, an adjustment gasket group 025 and a clamping arm 026, the reinforcing plate can be clamped by the action of the strong clamping cylinder 022 to ensure that the reinforcing plate and the long tubular structure are tightly fitted during welding. Through the centering clamping mechanism 03 which is set up, and the centering clamping mechanism 03 is composed of a first mounting seat 031, a synchronous opening and closing clamping cylinder 032, a first detection sensor 033, a first mounting bracket 034 and a clamping block 035, the workpiece can be automatically center clamped and positioned according to the action time of the synchronous opening and closing clamping cylinder 032. At the same time, the first detection sensor 033 is used to detect whether the clamping is in place, and the hydraulic rotary clamping mechanism 04 is set, and the hydraulic rotary clamping mechanism 04 is composed of a first hydraulic cylinder 041, a second mounting seat 042, a rotating shaft 043, a second mounting bracket 044, a second detection sensor 045, a baffle 046, a steel ball 047, a copper sleeve 048, an end flange 049, a pin 0410 and a pressure plate 0411, so that the clamping and loosening of the workpiece by the pressure plate 0411 can be automatically realized through the action of the first hydraulic cylinder 041, and the hydraulic anti-deformation center positioning mechanism 05 is set, and the hydraulic anti-deformation center positioning mechanism 05 is composed of a second hydraulic cylinder 051, a mounting plate 052, and a connecting flange 053, connecting plate 054, spring 055, guide shaft 056, oil-free bushing 057, three-jaw chuck 058, third mounting seat 059, clamping claw 0510, third detection sensor 0511, top block 0512 and distance sensor 0513, so that the workpiece can be reversely deformed by the action of the second hydraulic cylinder 051, the workpiece hole can be centrally positioned by the action of the three-jaw chuck 058, the presence or absence of the workpiece is detected by the set third detection sensor 0511, and the required reverse deformation amount is detected by the set distance sensor 0513. When working, according to the model, specification and size of the upper product, the handling robot grabs two long tubular structural workpieces for secondary positioning (this device The secondary positioning mechanism is not reflected in the center), placed on the fixture of this device, and the three-jaw chuck 058 is opened by the PLC system, and the jaw cylinder 032 is opened and closed synchronously to clamp the workpiece, and the hydraulic rotary clamping mechanism 04 is retracted to automatically clamp the workpiece. After completion, the reinforcing plate is identified and located by the 3D vision camera, and the robot grabs the corresponding reinforcing plate in turn and puts it in the correct position. The clamping mechanism 02 is flipped and clamped. After completion, the workpiece is automatically welded. After the automatic welding is completed, the deformation of the structural part after the welding is completed is calculated through the feedback value of the distance sensor 0513, and then the pressure value output by the hydraulic system is automatically adjusted through the PLC, and the extension amount of the second hydraulic cylinder 051 is indirectly controlled, so as to realize automatic anti-deformation and straighten the workpiece.

Claims

1. A clamp for preventing deformation of a reinforcement plate of a long tubular structure after automatic welding, comprising a frame (01), a clamping mechanism (02), a centering clamping mechanism (03), a hydraulic rotary clamping mechanism (04) and a hydraulic anti-deformation center positioning mechanism (05), characterized in that: The clamping mechanism (02), the centering clamping mechanism (03), the hydraulic rotary clamping mechanism (04) and the hydraulic anti-deformation center positioning mechanism (05) are all mounted on the frame (01) by bolts. The clamping mechanism (02) is composed of a cylinder shield (021), a strong clamping cylinder (022), an L-shaped mounting plate (023), a copper pressure block (024), an adjustment gasket group (025) and a clamping arm (026). The centering clamping mechanism (03) is composed of a first mounting seat (031), a synchronous opening and closing clamping claw cylinder (032), a first detection sensor (033), a first mounting bracket (034) and a clamping block (035). The hydraulic rotary clamping mechanism (04) is composed of a first hydraulic oil cylinder (041), a second mounting seat (042), a rotating shaft (043), a second mounting bracket (044), a second detection sensor (045), a stop The invention relates to a hydraulic anti-deformation center positioning mechanism (05) comprising a second hydraulic cylinder (051), a mounting plate (052), a connecting flange (053), a connecting plate (054), a spring (055), a guide shaft (056), an oil-free bushing (057), a three-jaw chuck (058), a third mounting seat (059), a clamping claw (0510), a third detection sensor (0511), a top block (0512) and a distance sensor (0513). The connecting plate (054) is provided at two locations, and the spring (055), the guide shaft (056) and the oil-free bushing (057) are provided at four locations.

2. A fixture for preventing deformation of a reinforcement plate of a long tubular structural member after automatic welding according to claim 1, characterized in that: The clamping mechanism (02) is provided at six locations, and the centering clamping mechanism (03), the hydraulic rotary clamping mechanism (04) and the hydraulic anti-deformation center positioning mechanism (05) are each provided at two locations.

3. A fixture for preventing deformation of a reinforcement plate of a long tubular structural member after automatic welding according to claim 1, characterized in that: The cylinder shield (021), the L-shaped mounting plate (023), the clamping arm (026) and the strong clamping cylinder (022) are connected by bolts, and the copper pressure block (024), the adjustment gasket group (025) and the clamping arm (026) are connected by bolts.

4. A fixture for preventing deformation of a reinforcement plate of a long tubular structural member after automatic welding according to claim 1, characterized in that: The synchronous opening and closing clamping jaw cylinder (032) is connected to the first mounting seat (031) by bolts, the clamping block (035) is connected to the synchronous opening and closing clamping jaw cylinder (032) by bolts, the first mounting bracket (034) is connected to the clamping block (035) by bolts, and the first detection sensor (033) is installed on the first mounting bracket (034).

5. A fixture for preventing deformation of a reinforcement plate of a long tubular structural member after automatic welding according to claim 1, characterized in that: The first hydraulic cylinder (041), the second mounting bracket (044), the baffle (046) and the second mounting seat (042) are connected by bolts, the rotating shaft (043) and the first hydraulic cylinder (041) are floatingly connected by a T-slot, the pressure plate (0411) and the rotating shaft (043) are floatingly connected by a pin shaft (0410), the pin shaft (0410) is fixed by a retaining spring, the copper sleeve (048) is installed between the rotating shaft (043) and the second mounting seat (042), the steel ball (047) is installed in the spiral groove of the rotating shaft (043), and the second detection sensor (045) is installed on the second mounting bracket (044).

6. A fixture for preventing deformation of a reinforcement plate of a long tubular structural member after automatic welding according to claim 1, characterized in that: The mounting plate (052) and the oil-free bushing (057) are both mounted on the frame (01); the second hydraulic cylinder (051) is fixedly connected to the mounting plate (052) by bolts; the connecting flange (053) is connected to the second hydraulic cylinder (051) by threads; the connecting flange (053), the connecting plate (054), the guide shaft (056), the three-jaw chuck (058), the third detection sensor (0511), the top block (0512), the distance sensor (0513) and the third mounting seat (059) are connected by bolts; the spring (055) and the oil-free bushing (057) are both mounted on the guide shaft (056); and the clamping claw (0510) is connected to the three-jaw chuck (058) by bolts.

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