CN114515904B - Laser welding equipment and method for drying towel rack - Google Patents
Laser welding equipment and method for drying towel rack Download PDFInfo
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- CN114515904B CN114515904B CN202210342702.2A CN202210342702A CN114515904B CN 114515904 B CN114515904 B CN 114515904B CN 202210342702 A CN202210342702 A CN 202210342702A CN 114515904 B CN114515904 B CN 114515904B
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- 238000003466 welding Methods 0.000 title claims abstract description 253
- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000001035 drying Methods 0.000 title claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 148
- 230000008569 process Effects 0.000 claims abstract description 32
- 230000000007 visual effect Effects 0.000 claims abstract description 8
- 230000033001 locomotion Effects 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 74
- 230000000903 blocking effect Effects 0.000 claims description 70
- 238000005192 partition Methods 0.000 claims description 36
- 239000013072 incoming material Substances 0.000 claims description 26
- 230000009471 action Effects 0.000 claims description 17
- 238000003825 pressing Methods 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 6
- 230000007306 turnover Effects 0.000 claims description 6
- 230000003993 interaction Effects 0.000 claims description 3
- 230000001678 irradiating effect Effects 0.000 claims 1
- 229910000679 solder Inorganic materials 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 238000005219 brazing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N Acetylene Chemical compound C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
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- Treatment Of Fiber Materials (AREA)
Abstract
A laser welding apparatus for drying a towel rack for welding a cross bar and a vertical bar of the towel rack, comprising: the three-dimensional adjusting platform controls the motion trail of the laser welding machine according to the program; the laser welding machine is arranged on the three-dimensional adjusting platform and used for generating high-energy laser irradiated on the welding part of the towel rack and welding the cross rod and the vertical rod; and the visual tracking system is used for acquiring video information of the welding position and tracking the welding position and displaying the welding process on a computer display. According to the structural characteristics of the towel rack, the welding track can be obtained according to the model, and then a laser welding mode which is easy to control by a program is adopted, so that the quality of the solder plastic is improved; and then a jacking mechanism and a positioning mechanism are arranged according to structural characteristics, so that continuous laser welding can be realized. The welding cost can be reduced by 70% compared with the original cost in the comprehensive benefit, and the full coverage of similar products is met through laser tracking, so that the cost is greatly saved.
Description
Technical Field
The invention relates to the field of welding, in particular to laser welding equipment for drying a towel rack, and further relates to a welding method for drying the towel rack based on the laser welding equipment.
Background
The existing drying towel rack in the market has various and novel forms, and has beautiful appearance and special pipes such as round pipes, square pipes, flat pipes, waist pipes and the like; the main production materials of the drying towel rack also comprise various materials such as low carbon steel, stainless steel, aluminum alloy, copper alloy and the like; and the central heating type and the electric heating element are used as heat sources to dry and sterilize the towel and the clothes.
The diversity of the material and wall thickness of the raw materials of the drying towel rack inevitably leads to various welding processes; at present, four welding processes of brazing, manual gas welding, argon arc welding and resistance welding are mainly adopted, and the welding processes have the following defects:
1. the brazing requires that the threaded plugging seats of the vertical pipe, the transverse pipe and the water inlet and outlet are required to be tightly matched or fixed by spot welding. The tight fit fixation has high requirement on the accuracy of the machining dimension of the inner hole of the vertical pipe, the production cost is high, and abnormal falling of the welded part can occur after the welding is performed at high temperature; the air leakage rate after brazing and welding is as high as more than 3 percent; the spot welding is fixed and is required to be accurate to the spot welding process, the size of a gap at the matched position after spot welding cannot be larger than 0.1mm, otherwise, the air leakage rate is high, and huge reworking and scrapping risks exist. The product is seriously deformed after high-temperature brazing, and shaping operation is needed; in addition, the brazing furnace needs a large amount of natural gas to maintain the furnace temperature and nitrogen to cool the product, the running cost of equipment is high, and the requirement on the quantity of production batches of the drying towel rack is high.
2. Manual gas welding involves burning a combustible gas and oxygen to heat the workpiece and melt the wire. The manual welding process has high requirements on manual welding technology, unstable welding quality easily causes water leakage of the drying towel rack and has low service life; the welding flux is unevenly piled up, three polishing processes are needed to remove redundant welding flux, the product is seriously deformed after being heated at a local high temperature, and shaping operation is needed; the production efficiency is low and the large-scale production of the drying towel rack is not suitable.
3. Argon arc welding requires argon and carbon dioxide for protection in the heating welding process, so that oxygen is prevented from oxidizing metals and alloys. In the welding process, air holes, false welding, slag inclusion and welding leakage can be generated, and arc radiation, high-frequency electromagnetic radiation and harmful gas can be generated.
4. The resistance welding process cannot meet the requirement on multi-station welding of a plurality of transverse pipes and vertical pipes of the drying towel rack, has great limitation in the welding process of the drying towel rack, and can be only applied to specific drying towel racks.
In view of this, in order to improve the versatility of the welding process of the drying towel rack of various shapes, the processing precision and the air leakage rate are reduced, the production efficiency is improved, the production cost is reduced, the welding quality is improved, and the environmental pollution is reduced. It is necessary to design and manufacture a laser welding process and method for drying towel racks and the application of the welding equipment.
Disclosure of Invention
According to the problems set forth in the background technology, the invention provides the laser welding equipment for the drying towel rack, which is used for tracking the welding position and the synchronous same frequency of laser welding by visual scanning, the gap at the welding position can be in the range of 0-0.3mm, the welding disposable yield can reach more than 99.5%, and the drying towel rack is ensured not to leak air and water. The present invention is further described below.
A laser welding apparatus for drying a towel rack for welding a cross bar and a vertical bar of the towel rack, comprising:
the three-dimensional adjusting platform controls the motion trail of the laser welding machine according to the program;
the laser welding machine is arranged on the three-dimensional adjusting platform and used for generating high-energy laser irradiated on the welding part of the towel rack and welding the cross rod and the vertical rod;
and the visual tracking system is used for acquiring video information of the welding position and tracking the welding position and displaying the welding process on a computer display.
Preferably, the towel rack is conveyed on a conveying device, the conveying device is discontinuous at the laser welding machine, an independent middle conveying device is arranged at the laser welding equipment, two sides of the middle conveying device are connected with an incoming material conveying device and a feeding conveying device at intervals, and the distance between the ends of the incoming material conveying device and the feeding conveying device is smaller than the length of the towel rack; the aim is to make use of the structural characteristic of the towel rack that is long enough to enable the towel rack to automatically cross the interval between the conveying devices under the friction action with the conveying belt, so as to maintain the continuous running of the towel rack;
the lifting mechanism is further provided with a lifting cylinder, the output of the lifting cylinder is connected with a lifting platform, and two sides of the lifting platform are connected with transverse plates, namely a first transverse plate capable of lifting at a first partition and a second transverse plate capable of lifting at a second partition;
the second partition is further provided with a second material blocking mechanism, the second material blocking mechanism comprises a first cylinder and a material blocking plate connected to the output end of the first cylinder, the second partition is provided with a second in-place sensor, and the second transverse plate and the second material blocking mechanism are spatially staggered.
Preferably, a longitudinal positioning mechanism and a lateral positioning mechanism are included; the longitudinal positioning mechanism comprises a longitudinal positioning plate and a longitudinal positioning cylinder, and a longitudinal push plate is arranged at the output of the longitudinal positioning cylinder; the lateral positioning mechanism comprises a lateral positioning cylinder and a lateral pressure plate, wherein the lateral positioning cylinder is fixed on the jacking platform, and the lateral pressure plate is arranged on the output of the lateral positioning cylinder. When the lifting mechanism lifts the towel rack to the welding height, the longitudinal positioning mechanism acts firstly, the piston rod extends out after the longitudinal positioning cylinder acts, the longitudinal pushing plate pushes the towel rack until the towel rack is pressed on the longitudinal positioning plate, the purpose of longitudinal positioning is achieved, the rear lateral positioning mechanism acts, and the towel rack is clamped and positioned by the lateral pressing plates at the two sides, so that the purpose of transverse positioning is achieved.
Preferably, the jacking platform is in an H shape, two sides of the jacking platform are positioned outside the conveying device, openings formed at two ends of the H-shaped jacking platform have the effect of reducing weight, space required by mounting the second material blocking mechanism can be provided, two ends of the jacking platform are connected with the first transverse plate and the second transverse plate, and the jacking platform is integrally formed into a Chinese character 'ri'; the middle part of the jacking platform is provided with a mounting plate, the lateral positioning cylinder is arranged on the mounting plate, and the output of the jacking cylinder is connected to the mounting plate; the middle conveying device is divided into a first conveying device and a second conveying device which are independent, a third partition is arranged between the first conveying device and the second conveying device, and the mounting plate is lifted at the third partition.
Preferably, the mounting plate is provided with a centering mechanism, the centering mechanism comprises a central gear arranged on the mounting plate, two opposite racks are meshed on two sides of the central gear, and the two racks are respectively connected with a side pressing plate of the lateral positioning mechanism; the lateral positioning cylinder is only provided with one positioning plate on the mounting plate, and the purpose that the central positioning point of the longitudinal positioning plate is positioned on the symmetrical central line of the clamped towel rack is achieved.
Preferably, the longitudinal positioning plate is provided with a chuck; the device is used for clamping the end part of the vertical pipe of the towel rack, which is abutted against the chuck, and aims to enable the mounting plate to descend by a certain height, so that a moving space is reserved for a welding head of the laser welding machine to move to the lower part of the towel rack to weld a welding part below the towel rack.
Preferably, the first partition is provided with a first material blocking mechanism consistent with the second material blocking mechanism in structure, and the first material blocking mechanism is used for blocking the towel rack on the incoming material conveying device from continuing to advance in the welding process, so that the post-welding lifting mechanism is prevented from being stacked with the incoming material towel rack when the towel rack is lowered.
A laser welding method for towel rack, comprising the steps of:
s1, intercepting incoming materials, wherein a second material blocking mechanism senses the end parts of vertical rods of the towel rack, triggers a material blocking plate to move upwards and intercepts the towel rack through the action of the material blocking plate and a cross rod at the end parts;
s2, lifting and positioning the towel rack, intercepting the subsequent towel rack, lifting the towel rack to a welding height by a jacking mechanism, pressing the towel rack on a longitudinal positioning plate forwards by a longitudinal positioning mechanism, performing longitudinal positioning, performing lateral positioning by the lateral positioning mechanism again, centering and clamping the towel rack, and performing clamping and positioning by a chuck; the first material blocking mechanism acts to block the subsequent towel rack while jacking, and the second material blocking mechanism resets;
s3, performing laser welding, namely moving the jacking mechanism downwards to a preset height, performing continuous laser welding on the position to be welded of the towel rack by the laser welding machine under a preset program of the three-dimensional adjusting platform, moving to the lower side to continue welding after the upper side of the towel rack is welded, tracking the welding position by the vision tracking system, displaying the welding process on a computer display, and resetting the laser welding machine to the position above the towel rack after welding;
s4, discharging and circulating, wherein the lifting mechanism moves up to the welding height, the chuck and the longitudinal pushing plate reset to release the towel rack on the lifting mechanism, then the motor drives the chuck to turn over by 90 degrees, and the lifting mechanism acts to lower the towel rack on the middle conveying device; the chuck rotates and resets, and simultaneously the first material blocking mechanism acts to release the subsequent towel rack, the welded towel rack and the subsequent towel rack synchronously advance with intervals therebetween, and when the welded towel rack advances to the second partition, the second material blocking mechanism senses the intervals and the subsequent towel rack in sequence, triggers the action of the second material blocking mechanism, intercepts the subsequent towel rack and carries out the next cycle.
Still another welding method is related, comprising the steps of:
s1, intercepting incoming materials, wherein a second material blocking mechanism senses the end parts of vertical rods of the towel rack, triggers a material blocking plate to move upwards and intercepts the towel rack through the action of the material blocking plate and a cross rod at the end parts;
s2, lifting and positioning the towel rack, intercepting the subsequent towel rack, lifting the towel rack to a welding height by a jacking mechanism, pressing the towel rack on a longitudinal positioning plate forwards by a longitudinal positioning mechanism, performing longitudinal positioning, performing lateral positioning by the lateral positioning mechanism again, centering and clamping the towel rack, and performing clamping and positioning by a chuck; the first material blocking mechanism acts to block the subsequent towel rack while jacking, and the second material blocking mechanism resets;
s3, laser welding: the lifting mechanism moves downwards to a preset height to provide space for overturning the towel rack, the laser welding machine continuously performs laser welding on a to-be-welded position on one side of the towel rack under a preset program of the three-dimensional adjusting platform, then the longitudinal positioning cylinder is reset, the motor drives the towel rack to overturn for 180 degrees, then the longitudinal positioning cylinder acts again to clamp the towel rack, the laser welding machine continuously performs laser welding on the unwelded side, the vision tracking system tracks the welding position and displays the welding process on a computer display, and the post-welding laser welding machine is reset to the position above the towel rack;
s4, discharging and circulating, wherein the lifting mechanism moves up to the welding height, the chuck and the longitudinal pushing plate reset to release the towel rack on the lifting mechanism, then the motor drives the chuck to turn over by 90 degrees, and the lifting mechanism acts to lower the towel rack on the middle conveying device; the chuck rotates and resets, and simultaneously the first material blocking mechanism acts to release the subsequent towel rack, the welded towel rack and the subsequent towel rack synchronously advance with intervals therebetween, and when the welded towel rack advances to the second partition, the second material blocking mechanism senses the intervals and the subsequent towel rack in sequence, triggers the action of the second material blocking mechanism, intercepts the subsequent towel rack and carries out the next cycle.
The beneficial effects are that: compared with the prior art, the invention can obtain welding tracks according to the structural characteristics of the towel rack and further adopts a laser welding mode which is easy to control by a program, thereby improving the quality of solder plastic; and then a jacking mechanism and a positioning mechanism are arranged according to structural characteristics, so that continuous laser welding can be realized. The comprehensive benefit is that the welding cost can be reduced by 70% compared with the original cost, the full coverage of similar products is satisfied through laser tracking, the cost is greatly saved, the effect of the laser welding process and method and welding equipment applied to the towel drying rack is remarkable, the welding can be performed on different raw material materials and wall thicknesses, the process universality and the equipment utilization rate are high, in addition, the laser welding process and method and the welding equipment do not need welding gas, welding wires and natural gas, a large amount of energy sources can be saved, and the technology development of the whole towel drying rack and radiator industry is greatly promoted and promoted.
Drawings
Fig. 1: the laser welding machine of the invention welds the towel rack schematic diagram;
fig. 2: an enlarged schematic view of the structure at a in fig. 1;
fig. 3: a schematic structural diagram of embodiment 1;
fig. 4: another structural schematic diagram of embodiment 1;
fig. 5: a top view of the jacking mechanism;
fig. 6: a structural schematic diagram of the centering mechanism;
fig. 7: before the towel rack is lowered, the chuck clamps the schematic diagram of the end part of the towel rack;
fig. 8: after the chuck releases the end of the towel rack, a schematic diagram of the towel rack is lowered;
fig. 9: a schematic structural diagram of embodiment 2;
fig. 10: the structure of example 3 is schematically shown.
Detailed Description
A specific embodiment of the present invention will be described in detail below with reference to fig. 1-10.
Referring to fig. 1, a laser welding device for drying towel rack is used for welding a cross bar and a vertical bar of the towel rack, and comprises a three-dimensional adjusting platform 100 and a laser welding machine 200, wherein the laser welding machine 200 is arranged on the three-dimensional adjusting platform 100, the three-dimensional adjusting platform 100 can respectively and independently adjust the space positions of the laser welding machine 200 on three mutually perpendicular direction axes of X, Y, Z, the laser welding machine 200 generates high-energy laser, laser irradiation generates high temperature at a welding position, and a melting pool is generated to weld the cross bar and the vertical bar. The laser welding head of the laser welding machine 200 is provided with a visual tracking system 300, and the visual tracking system 300 can track welding positions and display welding processes on a computer display.
The shape of the drying towel rack is diversified, the shape of the pipe fitting for production is various shapes such as D type, square, round and flat pipe, the pipe fitting material can also be low carbon steel, stainless steel, aluminum alloy and copper alloy, the wall thickness of the pipe fitting can be selected between 0.5 mm and 5mm, the laser welding is applicable, the characteristics that the X axis, the Y axis and the Z axis can all independently move are based on, the path of the laser welding machine 200 is controlled by a numerical control welding system according to a path equation calculated by a towel rack model, the size of the drying towel rack can be customized according to the size of the drying towel rack, the numerical control welding system inputs welding related parameters to realize high-speed welding, and the power of laser welding equipment can be adjusted according to the material and the wall thickness of a welding workpiece.
Referring to fig. 2, the three-dimensional adjustment platform 100 may independently adjust the laser welding machine 200 on three mutually perpendicular direction axes X, Y, Z, specifically, the three-dimensional adjustment platform 100 includes an X-axis assembly, a Y-axis assembly, and a Z-axis assembly, where the X-axis assembly is parallel to a vertical rod of the towel rack or is consistent with a feeding direction of the towel rack, the three-dimensional adjustment platform includes a cross beam 101, a sliding rail 102 is disposed on the cross beam 101, a sliding table 103 is disposed on the sliding rail 102, a rack 104 is further disposed on the cross beam 101, a gear 105 is disposed at a lower portion of the sliding table 103, the gear 105 is meshed with the rack 104, and the gear 105 rotates under a program instruction of the numerical control welding system, and slides on the sliding rail 102 through a meshing effect with the rack 104; the Y-axis assembly is fixed on the sliding table 103 of the X-axis assembly at one end, the movement and control principle of the Y-axis assembly is consistent with that of the X-axis assembly, the difference is that the sliding table is arranged on the lateral direction of the cross beam, the Z-axis assembly is arranged on the sliding table of the Y-axis assembly, the Y-axis assembly comprises a shafting mounting plate 106, a driving motor 107 is arranged on one side of the Z-axis assembly, a first gear 108, a first steering wheel 109, a second steering wheel 110 and a third steering wheel 111 are arranged on the other side of the Y-axis assembly, the output of the driving motor 107 is connected with the first gear 108 to drive the first gear 108 to rotate, the Y-axis assembly further comprises a vertical beam 112, the vertical beam 112 is provided with a sliding rail 113 towards one side of the Y-axis assembly, meanwhile, a guide sliding block 114 is arranged on the sliding table of the Y-axis assembly, the sliding rail 113 is matched with the guide sliding block 114, one side of the vertical beam 112 is connected with a strip 115, one end of the strip 115 is fixed at the lower end of the vertical beam 112, the other end of the strip 115 sequentially bypasses the first steering wheel 109, the first gear 108, the second steering wheel 110 and the third steering wheel 111 and then is fixed at the upper end, the strip is tensioned on the shafting and the vertical beam 112, and the strip 115 is meshed with the first gear 108, and the strip is meshed with the first gear 108, and at the lower end of the laser beam 200 by welding pin joint. When the driving motor 107 drives the first gear 108 to rotate, the height of the end portion of the strip in the vertical direction is changed based on the characteristic that the positions of the first gear 108, the first steering wheel 109, the second steering wheel 110 and the third steering wheel 111 are constant in height, so that the height of the laser welding machine 200 is changed. The three-dimensional adjustment platform 100 shown in this embodiment is a preferred embodiment, and other implementations in the prior art are equally applicable.
Referring to fig. 3-4, the towel rack is assembled before laser welding, i.e. the vertical rods and the cross rods are assembled together and then transferred to the laser welding apparatus of the present invention by a transfer device, such as a conveyor belt, based on which the present embodiment further comprises means for lifting and positioning the towel rack from the conveyor belt to a welding position at a certain height. Specifically, the conveying device is not continuous at the laser welding equipment, the laser welding equipment is provided with an independent middle conveying device 4, two sides of the middle conveying device 4 are connected with the incoming material conveying device 5 and the feeding conveying device 6 at intervals, and the end spacing between the incoming material conveying device 5 and the feeding conveying device 6 is smaller than the length of the towel rack, namely the first partition L of the middle conveying device 4 and the incoming material conveying device 5 1 A second partition L of the intermediate conveyor 4 and the feeding conveyor 6 2 Length L of intermediate transfer device 4 3 The total length of the towel rack is smaller than that of the towel rack, and the aim is to utilize the structural characteristic of the towel rack which is long enough to enable the towel rack to automatically cross the interval between the conveying devices under the friction action of the towel rack and maintain the continuous running of the towel rack.
Referring to fig. 3-5, the welding position of the towel rack is a matching position of the cross bar and the vertical bar, which is a closed loop line, and in order to realize the welding of the loop line, the first partition and the second partition are provided with a lifting mechanism 7, the lifting mechanism 7 lifts the towel rack to a welding height, and an action space of the laser welding heads is reserved on two sides of the towel rack. The jacking mechanism 7 comprises a jacking cylinder 701 for generating upward output, wherein the output of the jacking cylinder 701 is connected with a jacking platform 702, two sides of the jacking platform 702 are connected with transverse plates, namely a first transverse plate 703 for lifting and lowering at a first partition position and a second partition L 2 A second transverse plate 704 in lifting motion, and a second blocking mechanism 8 arranged at the second partition, comprising a first cylinder 801 and a second cylinder connected with the first cylinderThe material blocking plate 802 at the output end, the output of the first cylinder 801 is upward, and the effect is to lift the material blocking plate 802 upward to block the travel of the towel rack, retain the towel rack on the middle conveying device 4, and separate the second partition L 2 A second in-place sensor is arranged at the position to detect whether the towel rack is in place, and the second transverse plate 704 and the second material blocking mechanism 8 are spatially staggered, so that the second transverse plate 704 is prevented from colliding with the second material blocking mechanism in the lifting action process; after the towel rack is retained by the second material blocking mechanism 8, based on the characteristic that the distance between the ends of the conveying device 5 and the feeding conveying device 6 is smaller than the length of the towel rack, the lifting cylinder 701 acts to drive the lifting platform 702 to lift, so that the first transverse plate 703 and the second transverse plate 704 can lift the towel rack to the welding height.
Referring to fig. 3-5, in this embodiment, a laser welding mode is adopted, the matching position of the cross bar and the vertical bar of the towel rack is a laser welding position, and the laser welding weld is small, so that the positioning requirement on the welding position is strict in laser welding, in this embodiment, a longitudinal positioning mechanism is arranged at the welding height, and comprises a fixed longitudinal positioning plate 9 and a longitudinal positioning cylinder 10, and the output of the longitudinal positioning cylinder 10 is provided with a longitudinal push plate 101; the jacking platform 702 is further provided with a lateral positioning mechanism 11, which comprises a lateral positioning cylinder 111 and a lateral pressure plate 112, wherein the lateral positioning cylinder 111 is fixed on the jacking platform 702, and the lateral pressure plate 112 is arranged on the output of the lateral positioning cylinder 111. When the lifting mechanism 7 lifts the towel rack to the welding height, the longitudinal positioning mechanism acts firstly, the longitudinal positioning cylinder 10 acts and then the piston rod extends out, the longitudinal push plate 101 pushes the towel rack until the towel rack is pressed on the longitudinal positioning plate 9, the purpose of longitudinal positioning is achieved, the lateral positioning mechanism 11 acts, and the towel rack is clamped and positioned by the lateral pressure plates 112 on two sides, so that the purpose of transverse positioning is achieved.
Referring to fig. 5, the lifting platform 702 is in an H shape, two sides of the lifting platform 702 are located outside the conveying device to avoid interference with flanges at two sides of the conveying device, the openings formed at two ends of the lifting platform 702 in the H shape have weight-reducing effect, and a space required for installing the second material blocking mechanism 8 can be provided, two ends of the space are connected with the first transverse plate 703 and the second transverse plate 704, so that a day is integrally formedThe middle part of the jacking platform 702 is provided with a mounting plate 705, the lateral positioning cylinder 111 is arranged on the mounting plate 705, and the output of the jacking cylinder 701 is connected to the mounting plate 705 and acts on the gravity center of the jacking platform; correspondingly, the intermediate conveying device 4 is divided into a first conveying device 41 and a second conveying device 42 which are independent, and a third partition L exists between the first conveying device 41 and the second conveying device 42 3 The mounting plate 705 is separated from the third partition L And 3, lifting.
Referring to fig. 6, the laser welding is performed automatically according to an internally-arranged welding track curve equation, and based on the characteristic that two rows of welding positions of the towel rack are symmetrical, the embodiment is further provided with a centering mechanism for aligning the central axis of the towel rack at the central point of the longitudinal positioning plate 9, and the welding track of the towel rack is established by taking the central point of the longitudinal positioning plate 9 as a coordinate system, and the adopted technical scheme is as follows: the centering mechanism is arranged on the mounting plate 705 and comprises a central gear 706 arranged on the mounting plate 705, two opposite racks 707 are meshed with two sides of the central gear 706, the two racks 707 are respectively connected with the side pressing plates 112 of the lateral positioning mechanism 11, the lateral positioning cylinder 111 is only provided with one side pressing plate 112 which is positioned on the mounting plate 705, after the lateral positioning cylinder 111 acts, the side pressing plate 112 connected with the lateral positioning cylinder is pushed to slide, the side pressing plate 112 is linked with the rack 707 connected with the side pressing plate to slide, and then the side pressing plates 112 at the other side are driven to slide through the meshing transmission of the central gear 706, so that the two side pressing plates 112 act in opposite directions or back to back in the same amplitude, and the purpose that the central positioning point of the longitudinal positioning plate 9 is positioned on the symmetrical central line of the clamped towel rack is achieved.
Referring to fig. 3-4, the longitudinal positioning plate 9 is provided with a chuck 13, which is longitudinally arranged and is used for clamping the end part of the vertical tube of the towel rack, which is abutted against the chuck 13, and the towel rack can be constantly positioned at the welding height under the clamping of the chuck 13 and the longitudinal pushing plate 101 after being separated from the jacking mechanism 7, so as to enable the mounting plate 705 to descend by a certain height, and a moving space is reserved for moving the welding head of the laser welding machine to the lower side of the towel rack to weld the welding position below the towel rack.
After the laser welding is completed, a welding cycle is performed, and the present invention provides the following cycle examples:
example 1
Referring to fig. 3 to 4, the welded towel rack is lowered onto the initial intermediate conveyor 4, and the intermediate conveyor conveys the towel rack to the feed conveyor 6, and then the next towel rack to be welded enters the intermediate conveyor 4 for the next welding cycle.
The first partition L 1 The first material blocking mechanism 12 which is consistent with the structure of the second material blocking mechanism 8 is arranged at the position, and is used for blocking the towel rack on the incoming material conveying device 5 from continuously advancing in the welding process, so that the phenomenon that the welded jacking mechanism 7 stacks with the incoming material towel rack when the towel rack is lowered is avoided, the unwelded towel rack is omitted, and in the process, the welding time is matched with the time of the incoming material so as to avoid the gradual increase of the towel rack blocked by the incoming material conveying device 5.
It should be noted that, at two ends of the towel rack, the vertical rod has protruding parts for press-fitting plugs, i.e. a space exists between the end cross bar and the vertical rod, and referring to fig. 1, this makes it possible for the towel rack to cross the second partition L after the second material blocking mechanism 8 contacts the end cross bar 2 While contacting the feed conveyor 6, providing a portion of interaction with the second cross plate 704, the towel rack can also span the first partition L based on the characteristic that the end spacing of the feed conveyor 5 and the feed conveyor 6 is less than the length of the towel rack 1 And contacts the incoming material conveyor 5, providing a portion that interacts with the first cross plate 703. Before laser welding, after the lifting mechanism 7 lifts the towel rack, the first material blocking mechanism 12 acts to block the subsequent towel rack, based on the contact part between the lifted towel rack and the incoming material conveying device 5, the subsequent towel rack can be blocked by the first material blocking mechanism 12 after passing through the contact part, the lifted towel rack has a positioning procedure before welding, the longitudinal positioning cylinder 10 acts, the longitudinal push plate 101 pushes the towel rack until the towel rack is pressed on the longitudinal positioning plate 9, and the purpose of longitudinal positioning is achieved, namely, the towel rack forwards advances by a distance at one end at the moment, so that the towel rack can avoid the subsequent towel rack and the first material blocking mechanism 12 when the towel rack is just lowered onto the intermediate conveying device 4 after welding.
The longitudinal positioning plate 9 is connected to a motor 14, and the motor 14 can drive the longitudinal positioning plate 9 to rotate, so as to realize 90 degrees of overturning of the towel rack clamped and fixed by the chuck 13.
In this embodiment, a welding method includes the steps of:
s1, intercepting incoming materials, wherein the second material blocking mechanism 8 senses the end parts of vertical rods of the towel rack, triggers the material blocking plate 802 to move upwards and intercepts the towel rack by acting with end cross rods;
s2, lifting and positioning the towel rack and intercepting the subsequent towel rack, wherein the lifting mechanism 7 lifts the towel rack to a welding height, the longitudinal positioning mechanism acts to press the towel rack on the longitudinal positioning plate 9 forwards, the lateral positioning mechanism 11 acts again after longitudinal positioning to center and clamp the towel rack for positioning, and the chuck 13 acts to clamp the end part of the towel rack; the first material blocking mechanism 12 acts to block the subsequent towel rack while jacking, and the second material blocking mechanism 8 resets;
s3, laser welding, namely moving the jacking mechanism 7 downwards by a preset height, continuously performing laser welding on the position to be welded of the towel rack by the laser welding machine 200 under a preset program of the three-dimensional adjusting platform 100, moving to the lower side to continue welding before the upper side of the towel rack is welded, tracking the welding position by the vision tracking system 300, displaying the welding process on a computer display, and resetting the post-welding laser welding machine to the position above the towel rack;
s4, discharging and circulating, wherein the jacking mechanism 7 moves upwards to a welding height, the chuck 13 and the longitudinal pushing plate 101 reset and release the towel rack on the jacking mechanism 7, then the motor 14 drives the chuck 13 to turn over 90 degrees, the characteristics of the space between the end part of the towel rack and the top surface of the vertical rod are utilized to meet the requirement of the space of the towel rack over the chuck 13, and the jacking mechanism 7 acts to lower the towel rack on the middle conveying device 4; the chuck 13 rotates and resets, and simultaneously the first material blocking mechanism 12 acts to release the subsequent towel rack, the welded towel rack and the subsequent towel rack synchronously advance with intervals therebetween, when the welded towel rack advances to the second partition, the second material blocking mechanism senses the intervals and the subsequent towel rack in sequence, the action of the second material blocking mechanism is triggered, the subsequent towel rack is intercepted, and the next cycle is performed.
Example 2
Referring to fig. 9, the welding method in this embodiment differs from the welding method of embodiment 1 only in that, on the basis of embodiment 1:
step S3, laser welding: the lifting mechanism 7 moves downwards to a preset height to provide space for overturning the towel rack, the laser welding machine 200 continuously performs laser welding on the position to be welded on one side of the towel rack under the preset program of the three-dimensional adjusting platform 100, then the longitudinal positioning cylinder 10 is reset, the motor 14 drives the towel rack to overturn for 180 degrees, then the longitudinal positioning cylinder 10 acts again to clamp the towel rack, the laser welding machine 200 continuously performs laser welding on the unwelded side, the vision tracking system 300 tracks the welding position and displays the welding process on a computer display, and the post-welding laser welding machine is reset to the position above the towel rack.
Of course, for a small number of towel racks with end sections traversing less than the space required to clear the chuck 13 when lowered from the top surface of the standpipe, the longitudinal positioning plate 9 or motor 14 may be disposed on a moving platform to increase the distance traversed by the longitudinal positioning plate 9 and the end sections, the implementation means being conventional and not further described.
The embodiment 1 and the embodiment 2 realize the one-by-one welding of all incoming materials, wherein the incoming materials are towel racks to be welded by laser, the outgoing materials are towel racks after welding, and the process has high continuity.
Example 3
Referring to fig. 10, for the case where the incoming material rate is greater than the laser welding rate of the single towel rack, the number of the subsequent towel racks blocked by the first blocking mechanism 12 in the embodiments 1 and 2 is gradually increased, and the subsequent towel racks are stacked on the incoming material conveying device 5, that is, the single laser welding machine 200 is a process bottleneck, and is not suitable for the case of the production line where the pre-assembly process rate is greater than the welding rate. In this embodiment, a plurality of laser welders 200 are disposed on the same conveyor to compensate for the drying rate.
On the basis of embodiment 2, the output of the lifting cylinder 701 is connected to the side of the lifting platform 702, that is, the output rod of the lifting cylinder 701 is located at the side of the middle conveying device 4, so as to avoid blocking the conveying channel of the middle conveying device 4 to the towel rack, and after the towel rack is lifted above the middle conveying device 4, the subsequent towel rack to be welded can be conveyed forward and then be grabbed by the next laser welding machine 200; a post-welding feeding conveying device 500 is arranged below the longitudinal positioning plate 9, the right end part of the post-welding feeding conveying device 500 exceeds the longitudinal positioning plate 9 and does not exceed the leftmost end surface of the towel rack blocked by the second blocking mechanism 8, the purpose is that the lifting mechanism 7 is not interfered to lift the towel rack to the welding height, and when the post-welding lifting mechanism 7 moves the towel rack downwards, the left end part of the towel rack is borne on the post-welding feeding conveying device 500; the post-welding feeding conveying device 500 is provided with a blanking cylinder 15 in the feeding direction (right side), the output of the blanking cylinder 15 is connected with a blanking push plate 16, and when the towel rack moves down to the height of the post-welding feeding conveying device 500, the blanking cylinder 15 acts to push the towel rack to enter the post-welding feeding conveying device 500; the first material blocking mechanism 12 is provided with a first in-place sensor for sensing the in-place condition of the towel rack at the first partition.
In this embodiment, the welding method includes the steps of:
s1, intercepting incoming materials, wherein the second material blocking mechanism 8 senses the end parts of vertical rods of the towel rack, triggers the material blocking plate 802 to move upwards and intercepts the towel rack by acting with end cross rods;
s2, lifting and positioning the towel rack and intercepting a subsequent towel rack, wherein the lifting mechanism 7 lifts the towel rack to a welding height, the longitudinal positioning mechanism moves to press the towel rack on the longitudinal positioning plate 9 forwards, the lateral positioning mechanism 11 moves again after longitudinal positioning to center and position the towel rack, the chuck 13 moves to clamp the end of the towel rack, the second material blocking mechanism 8 resets, and the subsequent towel rack continues to travel;
s3, laser welding, namely, the jacking mechanism 7 moves downwards by a preset height, such as the height of the post-welding feeding conveying device 500, to provide space for overturning the towel rack, the laser welding machine 200 continuously performs laser welding on the position to be welded on one side of the towel rack under the preset program of the three-dimensional adjusting platform 100, then the motor 14 drives the towel rack to overturn by 180 degrees, the laser welding machine 200 continuously performs laser welding on the unwelded side, the vision tracking system 300 tracks the welding position and displays the welding process on a computer display, the post-welding laser welding machine is reset to the position above the towel rack, and the jacking mechanism 7 moves upwards to the welding height;
s4, discharging, resetting the chuck 13 and the longitudinal pushing plate 101 to release the towel rack on the jacking mechanism 7, driving the chuck 13 to turn over 90 degrees by the motor 14, enabling the jacking mechanism 7 to move down to the height of the post-welding feeding conveying device 500, and enabling the left end part of the towel rack to prop against the post-welding feeding conveying device 500; the chuck 13 rotates to reset, the blanking cylinder 15 acts to push the towel rack to enter the post-welding feeding conveying device 500, and the blanking cylinder 15 resets;
s4, resetting and circulating the lifting mechanism, wherein when the first in-place sensor detects that no towel rack exists at the current first partition, the first material blocking mechanism 12 acts to block the follow-up towel rack for a preset duration, the aim of ensuring that the descending towel rack is integrally blocked before the first partition, and the aim of the preset duration is to ensure that the towel rack on the middle conveying device 4 can be surely conveyed away from the middle conveying device 4, so that the lifting mechanism can be reset to the position under the middle conveying device, and the first material blocking mechanism 12 is reset to the position under the first partition to continue the next circulation.
In this embodiment 3, the incoming material is separated from the outgoing material, so that multiple groups of laser welders 200 can be arranged in the incoming material direction.
According to the structural characteristics of the towel rack, the welding track can be obtained according to the model, and then a laser welding mode which is easy to control by a program is adopted, so that the quality of the solder plastic is improved; and then a jacking mechanism and a positioning mechanism are arranged according to structural characteristics, so that continuous laser welding can be realized.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A laser welding equipment for drying towel rack, which is used for welding a cross bar and a vertical bar of the towel rack, and is characterized by comprising:
a three-dimensional adjusting platform (100) for controlling the motion trail of the laser welding machine according to the program;
a laser welding machine (200) arranged on the three-dimensional adjusting platform for generating high-energy laser irradiating the welding part of the towel rack for use
Welding the cross bars and the vertical bars;
a visual tracking system (300) for acquiring video information of the welding location for tracking the welding location and displaying on a computer display
Showing a welding process;
the towel rack is conveyed on a conveying device, the conveying device is discontinuous at a laser welding machine (200), and the laser welding equipment is provided with a plurality of towel racks
Is provided with an independent intermediate conveying device (4), and two sides of the intermediate conveying device (4) are connected with an incoming material conveying device (5) and a feeding device at intervals
A conveyor (6), and the end spacing between the feeding conveyor (5) and the feeding conveyor (6) is smaller than that of the towel rack
Is a length of (2);
the lifting mechanism (7) is further arranged, and comprises a lifting cylinder (701), wherein the output of the lifting cylinder (701) is connected with a lifting platform
(702) Two sides of the jacking platform (702) are connected with transverse plates which are respectively a first transverse plate (703) capable of lifting at a first partition position
And a second cross plate (704) which can be lifted and lowered at the second partition;
the device is also provided with a second material blocking mechanism (8) which is arranged at a second partition and comprises a first cylinder (801) and a second cylinder connected with the output end of the first cylinder
A second in-place sensor is arranged at a second partition position of the material blocking plate (802), and the second transverse plate (704) and a second material blocking mechanism
(8) There is a spatial misalignment;
comprises a longitudinal positioning mechanism and a lateral positioning mechanism (11); longitudinal positioning mechanism comprising a longitudinal positioning plate (9) and
the device comprises a longitudinal positioning cylinder (10), wherein a longitudinal push plate (101) is arranged at the output of the longitudinal positioning cylinder (10); a lateral positioning mechanism (11),
comprises a lateral positioning cylinder (111) and a lateral pressure plate (112), wherein the lateral positioning cylinder (111) is fixed on a jacking platform (702)
The upper side pressure plate (112) is arranged on the output of the lateral positioning cylinder (111);
the jacking platform (702) is H-shaped, two sides of the jacking platform are positioned outside the conveying device, and two ends of the jacking platform are connected with the first transverse plate (703) and the second transverse plate
Two cross plates (704) integrally formed in a Chinese character 'ri' shape; the middle part of the jacking platform (702) is provided with a mounting plate (705), and the lateral direction is provided with a plurality of holes
The positioning cylinder (111) is arranged on the mounting plate (705), and the output of the jacking cylinder (701) is connected with the mounting plate (705)
Applying; the intermediate conveyor (4) is divided into a first conveyor (41) and a second conveyor (42), the first conveyor being separate
A third partition is arranged between the conveying device (41) and the second conveying device (42), and the mounting plate (705) rises at the third partition
Descending.
2. The laser welding apparatus according to claim 1, wherein:
the mounting plate (705) is provided with a centering mechanism, which comprises a sun gear (706) arranged on the mounting plate (705), and the centering mechanism is arranged on the mounting plate
Two opposite racks (707) are meshed on two sides of the heart gear (706), and the two racks (707) are respectively connected with a side pressing plate (112) of the lateral positioning mechanism (11).
3. The laser welding apparatus according to claim 2, wherein:
the longitudinal positioning plate (9) is provided with a chuck (13);
the first partition is provided with a first material blocking mechanism (12) which is consistent with the second material blocking mechanism (8) in structure;
the longitudinal positioning plate (9) is connected to the output of a motor (14).
4. A laser welding method based on the laser welding apparatus as claimed in claim 3, characterized by comprising the steps of
The steps are as follows:
s1, intercepting incoming materials, sensing the end part of a vertical rod of a towel rack by a second material blocking mechanism (8), triggering a material blocking plate (802) to move upwards,
trapping the towel rack by interaction with the end rail;
s2, lifting and positioning the towel rack, intercepting the subsequent towel rack, and lifting the towel rack to a welding height by action of a jacking mechanism (7)
The degree and longitudinal positioning mechanism acts to move forward the towel rack to press on the longitudinal positioning plate (9), and the lateral positioning machine is used after longitudinal positioning
The mechanism (11) moves again to clamp and position the towel rack in a centering way, and then the chuck (13) moves to clamp the end part of the towel rack; lifting and lifting together
When the first material blocking mechanism (12) acts to block the subsequent towel rack, the second material blocking mechanism (8) resets;
s3, laser welding, wherein the jacking mechanism (7) moves downwards to a preset height, and the laser welding machine (200) is arranged on the three-dimensional adjusting platform (100)
Continuously laser welding the positions to be welded of the towel rack under a preset program, wherein the visual tracking system (300) tracks the welding positions and performs the laser welding on the positions to be welded
Displaying the welding process on a computer display, and resetting the post-welding laser welding machine to the position above the towel rack;
s4, discharging and circulating, wherein the jacking mechanism (7) moves upwards to the welding height, and the chuck (13) and the longitudinal pushing plate (101) are reset
The towel rack is released on the jacking mechanism (7), and then the motor (14) drives the chuck (13) to turn over by 90 degrees, and the jacking mechanism (7)
The towel rack is lowered onto the middle conveying device (4) through action; the chuck (13) rotates to reset, and meanwhile, the first material blocking mechanism (12)
The action releases the subsequent towel rack, the welded towel rack and the subsequent towel rack advance synchronously, and when the towel rack advances to the second partition, the second material is blocked
The mechanism senses the interval and the subsequent towel rack in sequence, triggers the action of the mechanism, intercepts the subsequent towel rack and carries out the next cycle.
5. A laser welding method based on the laser welding apparatus as claimed in claim 3, characterized by comprising the steps of
The steps are as follows:
s1, intercepting incoming materials, sensing the end part of a vertical rod of a towel rack by a second material blocking mechanism (8), triggering a material blocking plate (802) to move upwards,
trapping the towel rack by interaction with the end rail;
s2, lifting and positioning the towel rack, intercepting the subsequent towel rack, and lifting the towel rack to a welding height by action of a jacking mechanism (7)
The degree and longitudinal positioning mechanism acts to move forward the towel rack to press on the longitudinal positioning plate (9), and the lateral positioning machine is used after longitudinal positioning
The mechanism (11) moves again to clamp and position the towel rack in a centering way, and then the chuck (13) moves to clamp the end part of the towel rack; lifting and lifting together
When the first material blocking mechanism (12) acts to block the subsequent towel rack, the second material blocking mechanism (8) resets; s3, laser welding: the jacking mechanism (7) moves downwards to a preset height, and the laser welding machine (200) is arranged on the three-dimensional adjusting platform (100)
Continuously laser welding the position to be welded on one side of the towel rack under a preset program, resetting the longitudinal positioning cylinder and driving the motor
After the movable towel rack is turned over by 180 degrees, the longitudinal positioning air cylinder acts again to clamp the towel rack, and the laser welding machine (200) continues to weld the unwelded towel rack
One side is continuously welded by laser, the visual tracking system (300) tracks welding positions and displays welding processes on a computer display,
resetting the laser welding machine to the position above the towel rack after welding;
s4, discharging and circulating, wherein the jacking mechanism (7) moves upwards to the welding height, and the chuck (13) and the longitudinal pushing plate (101) are reset
The towel rack is released on the jacking mechanism (7), and then the motor (14) drives the chuck (13) to turn over by 90 degrees, and the jacking mechanism (7)
The towel rack is lowered onto the middle conveying device (4) through action; the chuck (13) rotates to reset, and meanwhile, the first material blocking mechanism (12)
The action releases the subsequent towel rack, the welded towel rack and the subsequent towel rack advance synchronously, and when the towel rack advances to the second partition, the second material is blocked
The mechanism senses the interval and the subsequent towel rack in sequence, triggers the action of the mechanism, intercepts the subsequent towel rack and carries out the next cycle.
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| US10591719B2 (en) * | 2017-12-19 | 2020-03-17 | Microvision, Inc. | Laser welded scanner assemblies |
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| CN207824188U (en) * | 2017-12-28 | 2018-09-07 | 大族激光科技产业集团股份有限公司 | A kind of laser soldering device |
| CN208991966U (en) * | 2018-02-05 | 2019-06-18 | 广州市花都志达不锈钢制品有限公司 | A kind of laser-beam welding machine with Multi-station working bench and device for visual identification |
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