Laser welding machine for meal heat preservation table and welding method

Abstract

The invention discloses a laser welding machine for a meal heat preservation table and a welding method, and relates to the technical field of laser welding machines.The laser welding machine comprises a welding mechanism and waste gas treatment equipment installed on one side of the interior of the welding mechanism, and a heat preservation table fixing mechanism is arranged on one side of the bottom of the welding mechanism; meshing racks are symmetrically arranged on one side of the bottom of the heat preservation table fixing mechanism, the welding mechanism comprises a first lifting support, a motor cover is fixedly installed on the top of the first lifting support, a lifting motor is fixedly installed on one side of the interior of the motor cover, and the output end of the lifting motor is fixedly connected with a first chain wheel transmission assembly; a third rotating motor drives a rotating worm to rotate, by means of the characteristic that the rotating worm is in meshed connection with a rotating worm gear, a switching support can drive a laser welding machine body and an infrared laser lamp to rotate, and by means of switching of the positions of the laser welding machine body and the infrared laser lamp, the infrared laser lamp is used for calibrating a welding point.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding machines, in particular to a laser welding machine and a welding method for a food warming table. Background Art

[0002] The warming table is an important equipment for large canteens to ensure that the food is healthy and delicious. At present, almost all large canteens use water-heating warming tables. The working principle of the water-heating warming table is: put the food tray on the groove of the warming table filled with tap water, use the electric heating pipe in the groove to heat the tap water, and under the heat conduction of water vapor and water, the food in the food tray is heated. When producing and processing the food warming table, a laser welding machine is required to weld the food warming table.

[0003] Announcement No. CN 211028629 U discloses a multi-station welding workbench for a laser welding machine. The connecting wire can be wound by a winding disk to prevent the connecting wire from being knotted due to the use of the operator, thereby extending the life of the connecting wire. Because of the internal spring, after the operator uses the laser welding gun, the laser welding gun is placed on the placement cylinder. At this time, the winding disk will automatically wind the connecting wire due to the retraction of the spring. Four laser welding guns are placed on the upper end of the welding workbench, so that one welding workbench can have four stations at the same time. In this way, not only does it not need to purchase multiple laser welding machines, but it also reduces the occupied area. The setting of goggles can prevent the operator from being stabbed by the strong light generated by welding during the welding operation, and it is also unnecessary for the operator to hold a protective mask during welding, so that the welding is more accurate. However, the above patent still has the following problems in actual use:

[0004] Although the multi-station welding workbench of the laser welding machine can use the laser welding gun for laser welding, it is necessary to ensure the accuracy of the laser welding gun and the welding part during laser welding to facilitate the focusing of the laser welding gun. The device is not convenient for focusing the laser welding gun before welding, which affects the stability of the welding position. At the same time, certain harmful gases will be generated during welding. The device is not equipped with relevant exhaust gas treatment equipment to purify the gas generated by welding, which causes environmental pollution.

[0005] A laser welding machine and a welding method for a food warming table are proposed to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide a laser welding machine and welding method for a food warming table, so as to solve the problem that although the multi-station welding workbench of the laser welding machine proposed in the above background technology can use a laser welding gun to perform laser welding, it is necessary to ensure the accuracy of the laser welding gun and the welding part during laser welding, so as to facilitate the focusing of the laser welding gun. The device is not convenient for focusing the laser welding gun before welding, which affects the stability of the welding position. At the same time, certain harmful gases will be generated during welding. The device is not equipped with relevant exhaust gas treatment devices to purify the gases generated by welding, thereby causing environmental pollution.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: a laser welding machine and welding method for a food warming table, comprising a welding mechanism, and an exhaust gas treatment device installed on one side of the inside of the welding mechanism;

[0008] A heat preservation table fixing mechanism is arranged on one side of the bottom of the welding mechanism, and meshing racks are symmetrically arranged on one side of the bottom of the heat preservation table fixing mechanism;

[0009] Also includes:

[0010] The welding mechanism comprises a first lifting bracket, a motor cover is fixedly installed on the top of the first lifting bracket, a lifting motor is fixedly installed on one side of the motor cover, an output end of the lifting motor is fixedly connected to a first sprocket transmission assembly, a lifting threaded rod is symmetrically connected to the bottom of the first sprocket transmission assembly, and the outer sides of the two lifting threaded rods are both threadedly connected to lifting threaded sleeves;

[0011] Among them, a second lifting bracket is fixedly installed on one side of the two lifting threaded sleeves, a first rotating motor is fixedly installed on one side of the top of the second lifting bracket, an output end of the first rotating motor is fixedly connected to a rotating bevel gear, a bottom of the rotating bevel gear is meshedly connected to a meshing bevel gear ring, and the meshing bevel gear ring is rotatably connected to the second lifting bracket;

[0012] Among them, first rotating connecting shafts are symmetrically installed on both sides of the inner part of the meshing bevel gear ring, a rotating inner ring is rotatably connected between the two first rotating connecting shafts, a translation bracket is fixedly installed in the middle of the rotating inner ring, a second rotating motor is fixedly installed on the top side of the translation bracket, the output end of the second rotating motor is fixedly connected to a rotating main gear, the bottom of the rotating main gear is meshed and connected with a rotating slave gear, and the rotating slave gear is fixedly installed on the outside of the first rotating connecting shaft.

[0013] Preferably, a translation motor is fixedly installed on one side of the translation bracket, and a translation threaded rod is fixedly connected to the output end of the translation motor, and a translation threaded sleeve is threadedly connected to the outer side of the translation threaded rod, and the bottom of the translation threaded sleeve is rotatably connected to a second rotating connecting shaft, and the bottom of the second rotating connecting shaft is fixedly connected to a switching bracket, and a rotating bracket is symmetrically installed on the outer side of the second rotating connecting shaft at the bottom of the translation threaded sleeve, and a third rotating motor is fixedly installed on the outer side of the rotating bracket.

[0014] By adopting the above technical scheme, the lifting motor is used to drive the first sprocket transmission assembly and the lifting threaded rod to rotate, so that the lifting threaded sleeve drives the second lifting bracket to move up and down, thereby adjusting the height of the laser welding machine body, not only can the top of the food insulation table be welded, but also the bottom of the food insulation table can be welded. The rotating bevel gear is driven to rotate by the first rotating motor, and the meshing connection between the rotating bevel gear and the meshing bevel gear ring is utilized to enable the laser welding machine body to rotate in the horizontal direction. At the same time, the second rotating motor is used to drive the rotating main gear to rotate, and the meshing connection between the rotating main gear and the rotating slave gear is utilized to enable the rotating inner ring to rotate in the vertical direction, thereby adjusting the welding angle of the laser welding machine body, and the translation motor drives the translation threaded rod to rotate, so that the translation threaded sleeve drives the laser welding machine body to move in the horizontal direction, thereby adjusting the welding position of the laser welding machine body, thereby realizing all-round welding of the food insulation table.

[0015] Preferably, the output end of the third rotating motor is fixedly connected to a rotating worm, one side of the rotating worm is meshingly connected to a rotating worm wheel, the rotating worm wheel is fixedly mounted on the outside of the first rotating connecting shaft, the bottom side of the switching bracket is fixedly mounted with a laser welding machine body, and the side of the switching bracket away from the laser welding machine body is fixedly mounted with an infrared laser lamp.

[0016] By adopting the above technical solution, the rotating worm is driven to rotate by the third rotating motor, and the characteristics of the meshing connection between the rotating worm and the rotating worm wheel are utilized, so that the switching bracket can drive the laser welding machine body and the infrared laser lamp to rotate. By switching the position of the laser welding machine body and the infrared laser lamp, the infrared laser lamp is used to calibrate the welding point, thereby improving the accuracy of the welding position of the laser welding machine body.

[0017] Preferably, a fixed base is fixedly installed on one side of the bottom of the first lifting bracket, an opening and closing gear is symmetrically rotatably connected inside the fixed base, an opening and closing gear is meshingly connected with an opening and closing rack on the top, a sliding bracket is fixedly installed on the top of the opening and closing rack, a lifting sliding rod is fixedly installed inside the sliding bracket, a lifting sliding sleeve is slidably connected to the outer side of the lifting sliding rod, and a support block is fixedly installed between the two lifting sliding sleeves.

[0018] By adopting the above technical solution,

[0019] Preferably, an exhaust fan is fixedly connected to the end of the support block, limiting slide grooves are provided on both sides of the support block and the exhaust fan, a dust cover is fixedly installed on the bottom of the exhaust fan, a collecting cover is fixedly installed on the top of the exhaust fan, a connecting pipe is fixedly connected to one side of the collecting cover, the exhaust gas treatment equipment is fixedly installed on the end of the connecting pipe, and the exhaust gas treatment equipment is fixedly connected to the support block.

[0020] By adopting the above technical solution and utilizing the characteristics of the inner ring connection between the opening and closing gear and the opening and closing rack, when the opening and closing gear rotates, the opening and closing rack can drive the sliding bracket and the exhaust fan to move, and the exhaust fan and the bottom collection box can be stored on the top of the fixed base, which not only improves the stability of the entire laser welding machine, but also saves space.

[0021] Preferably, a bottom connecting block is fixedly installed on one side of the bottom of the sliding bracket, a bottom collecting box is fixedly installed on the outer side of the bottom connecting block, a fixed pulley is symmetrically installed on the inner side of the top of the first lifting bracket, a connecting steel wire rope is wound around the outer side of the fixed pulley, and the connecting steel wire rope is fixedly connected to the support block and the second lifting bracket respectively.

[0022] By adopting the above technical solution, utilizing the characteristics of the sliding connection between the lifting sliding sleeve and the lifting sliding rod, and utilizing the fixed pulley and the connecting wire rope to connect the second lifting bracket and the support block, the exhaust fan and the second lifting bracket can slide relative to each other, thereby more closely fitting the top of the welding part, and the exhaust fan can be used to absorb the harmful gas generated by welding, and the exhaust gas treatment equipment can be used to treat the exhaust gas, thereby achieving the purpose of protecting the environment.

[0023] Preferably, the thermal insulation table fixing mechanism includes a movable base, universal wheels are fixedly installed around the bottom of the movable base, the meshing rack is symmetrically installed on one side of the bottom of the movable base, the meshing rack is meshed with the opening and closing gear, and a bottom adjustment bracket is symmetrically installed on the top of the movable base, one side of the two bottom adjustment brackets is rotatably connected to a second sprocket transmission assembly, one side of the second sprocket transmission assembly is fixedly connected to a first adjustment knob, the other side of the second sprocket transmission assembly is symmetrically connected to a first bidirectional threaded rod, and the outer side of the first bidirectional threaded rod is symmetrically threaded with an adjustment threaded sleeve.

[0024] By adopting the above technical solution, the movement of the mobile base is achieved by utilizing the universal wheel, and the connection between the mobile base and the bottom connecting block can be achieved by utilizing the characteristics of the meshing connection between the meshing rack and the opening and closing gear. When the mobile base is connected to the bottom connecting block, the opening and closing rack and the sliding bracket can be driven to slide, so that the exhaust fan and the bottom collection box can be moved out from the top of the fixed base. Therefore, when welding the laser welding machine body, harmful gases can be absorbed and the residues generated by welding can be collected at the same time.

[0025] Preferably, the top of the adjusting threaded sleeve is rotatably connected to an adjusting rotating rod, the top of the adjusting rotating rod is rotatably connected to an adjusting sliding sleeve, the middle parts of the two adjusting rotating rods are rotatably connected to an adjusting rotating shaft, the inner part of the adjusting sliding sleeve is slidably connected to the adjusting sliding rod, a top adjusting bracket is fixedly installed on the outer side of the adjusting sliding rod, a clamping bracket is fixedly installed on the top of the two top adjusting brackets, one side of the clamping bracket is rotatably connected to a third sprocket transmission assembly, and one side of the third sprocket transmission assembly is fixedly connected to a second adjusting knob.

[0026] By adopting the above technical solution, the second sprocket transmission assembly and the first bidirectional threaded rod are rotated by rotating the first adjusting knob, so that the adjusting threaded sleeve can slide relatively on the outside of the first bidirectional threaded rod and drive the adjusting rotating rod to rotate, thereby realizing the raising of the top adjusting bracket and the clamping bracket, which is convenient for welding the bottom of the food warming table.

[0027] Preferably, a second bidirectional threaded rod is symmetrically installed on the other side of the third sprocket transmission assembly, and the outer side of the second bidirectional threaded rod is symmetrically threadedly connected with a clamping threaded sleeve, and a clamping sliding plate is fixedly installed on the top of the clamping threaded sleeve on one side, and a rotating base is symmetrically installed on the top of the clamping sliding plate, one side of the rotating base is threadedly connected with a fixing bolt, and the inside of the rotating base is rotatably connected with a clamping arm.

[0028] By adopting the above technical solution, the third sprocket transmission assembly and the second bidirectional threaded rod are driven to rotate by rotating the second adjusting knob, so that the clamping threaded sleeve drives the clamping sliding plate and the clamping arm to move relative to each other, thereby the food warming table can be clamped and fixed. Due to the characteristic of the clamping arm being rotatably connected to the rotating base, the clamping arm can be rotated and fixed by the fixing bolt, thereby improving the clamping effect of the rotating clamping arm.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows: the laser welding machine and welding method for the food insulation table can drive the rotating worm to rotate by the third rotating motor, and utilize the characteristics of the meshing connection between the rotating worm and the rotating worm wheel to enable the switching bracket to drive the laser welding machine body and the infrared laser lamp to rotate, and through the switching of the positions of the laser welding machine body and the infrared laser lamp, the infrared laser lamp is used to calibrate the welding point, and through the characteristics of the rotatable connection between the clamping arm and the rotating base, the clamping arm can be rotated and fixed by the fixing bolt, thereby improving the clamping effect of the rotating clamping arm, and the specific contents are as follows:

[0030] 1. By setting up the welding mechanism, not only can the lifting motor be used to drive the first sprocket transmission assembly and the lifting threaded rod to rotate, so that the lifting threaded sleeve drives the second lifting bracket to lift and move, thereby adjusting the height of the laser welding machine body, not only can the top of the food insulation table be welded, but also the bottom of the food insulation table can be welded. The first rotating motor drives the rotating bevel gear to rotate, and the characteristics of the meshing connection between the rotating bevel gear and the meshing bevel gear ring are utilized to enable the laser welding machine body to rotate in the horizontal direction. At the same time, the second rotating motor drives the rotating main gear to rotate, and the characteristics of the meshing connection between the rotating main gear and the rotating slave gear are utilized to enable the rotating inner ring to rotate in the vertical direction, thereby adjusting the welding angle of the laser welding machine body, and the translation motor drives the translation threaded rod to rotate, so that the translation threaded sleeve drives the laser welding machine body to move in the horizontal direction, thereby adjusting the welding position of the laser welding machine body, thereby realizing all-round welding of the food insulation table, and the third rotating motor drives the rotating worm gear to rotate. The rod rotates, and the meshing connection between the rotating worm and the rotating worm wheel is utilized to enable the switching bracket to drive the laser welding machine body and the infrared laser lamp to rotate. By switching the positions of the laser welding machine body and the infrared laser lamp, the infrared laser lamp is utilized to calibrate the welding point, thereby improving the accuracy of the welding position of the laser welding machine body. By utilizing the inner ring connection between the opening and closing gear and the opening and closing rack, the opening and closing rack can drive the sliding bracket and the exhaust fan to move when the opening and closing gear rotates, and the exhaust fan and the bottom collection box can be stored on the top of the fixed base, which can not only improve the stability of the entire laser welding machine, but also save space. By utilizing the sliding connection between the lifting sliding sleeve and the lifting sliding rod, and by utilizing the fixed pulley and the connecting wire rope to connect the second lifting bracket to the support block, the exhaust fan and the second lifting bracket slide relatively, thereby fitting more closely to the top of the welding part, and the exhaust fan is utilized to absorb the harmful gas generated by welding, and the exhaust gas treatment equipment is utilized to treat the exhaust gas, thereby achieving the purpose of protecting the environment.

[0031] 2. By setting up the heat preservation table fixing mechanism, not only can the universal wheel be used to realize the movement of the mobile base, but also the characteristics of the meshing connection between the meshing rack and the opening and closing gear can be used to realize the connection between the mobile base and the bottom connecting block. When the mobile base is connected to the bottom connecting block, the opening and closing rack and the sliding bracket can be driven to slide, so that the exhaust fan and the bottom collection box can be moved out from the top of the fixed base. When the laser welding machine body is welded, the harmful gas can be absorbed and the residue generated by welding can be collected. The second sprocket transmission assembly and the first two-way transmission assembly are adjusted by turning the first adjusting knob. The threaded rod rotates, so that the adjusting threaded sleeve can slide relatively on the outside of the first two-way threaded rod, and at the same time can drive the adjusting rotating rod to rotate, thereby realizing the raising of the top adjusting bracket and the clamping bracket, which is convenient for welding the bottom of the food warming table. At the same time, by rotating the second adjusting knob, the third sprocket transmission assembly and the second two-way threaded rod are driven to rotate, so that the clamping threaded sleeve drives the clamping sliding plate and the clamping arm to move relative to each other, thereby clamping and fixing the food warming table. Due to the characteristic of the clamping arm being rotatably connected to the rotating base, the clamping arm can be rotated and fixed by the fixing bolt, thereby improving the clamping effect of the rotating clamping arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0033] Figure 2 It is a schematic diagram of the three-dimensional structure of the welding mechanism in the present invention;

[0034] Figure 3 It is a schematic diagram of the three-dimensional structure of the second lifting bracket in the present invention;

[0035] Figure 4 It is a schematic diagram of the three-dimensional structure of the rotating bevel gear and the meshing bevel gear ring in the present invention;

[0036] Figure 5 It is a schematic diagram of the three-dimensional structure of the cross section of the translation support in the present invention;

[0037] Figure 6 It is a schematic diagram of the three-dimensional structure of the rotating worm and the rotating worm wheel in the present invention;

[0038] Figure 7 It is a schematic diagram of the three-dimensional structure of the sliding bracket in the present invention;

[0039] Figure 8 It is a schematic diagram of the three-dimensional structure of the waste gas treatment equipment in the present invention;

[0040] Fig. 9 It is a schematic diagram of the three-dimensional structure of the heat preservation table fixing mechanism in the present invention;

[0041] Fig.10 It is a schematic diagram of the three-dimensional structure of the adjusting rotating rod in the present invention;

[0042] Fig.11 It is a schematic diagram of the three-dimensional structure of the clamping arm in the present invention.

[0043] In the figure: 1, welding mechanism; 101, first lifting bracket; 102, motor cover; 103, lifting motor; 104, first sprocket transmission assembly; 105, lifting threaded rod; 106, lifting threaded sleeve; 107, second lifting bracket; 108, first rotating motor; 109, rotating bevel gear; 110, meshing bevel gear ring; 111, first rotating connecting shaft; 112, rotating inner ring; 113, translation bracket; 114, second rotating motor; 115, rotating main gear; 116, Rotate the slave gear; 117, translation motor; 118, translation thread rod; 119, translation thread sleeve; 120, second rotation connecting shaft; 121, switching bracket; 122, rotation bracket; 123, third rotation motor; 124, rotation worm; 125, rotation worm wheel; 126, laser welding machine body; 127, infrared laser light; 128, fixed base; 129, opening and closing gear; 130, opening and closing rack; 131, sliding bracket; 132, lifting sliding rod; 133, lifting Sliding sleeve; 134, support block; 135, exhaust fan; 136, limited slide; 137, dust cover; 138, collection cover; 139, connecting pipe; 140, exhaust gas treatment equipment; 141, bottom connecting block; 142, bottom collection box; 143, fixed pulley; 144, connecting wire rope; 2, heating table fixing mechanism; 201, mobile base; 202, universal wheel; 203, meshing rack; 204, bottom adjustment bracket; 205, second sprocket transmission assembly; 206, first Adjusting knob; 207, first two-way threaded rod; 208, adjusting threaded sleeve; 209, adjusting rotating rod; 210, adjusting sliding sleeve; 211, adjusting rotating shaft; 212, adjusting sliding rod; 213, top adjusting bracket; 214, clamping bracket; 215, third sprocket transmission assembly; 216, second adjusting knob; 217, second two-way threaded rod; 218, clamping threaded sleeve; 219, clamping sliding plate; 220, rotating base; 221, fixing bolt; 222, clamping arm. DETAILED DESCRIPTION

[0044] 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 implementation regulations described 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.

[0045] See also Figure 1-Figure 11The present invention provides a technical solution: a laser welding machine and a welding method for a food insulation table, comprising a welding mechanism 1, and an exhaust gas treatment device 140 installed on one side of the inside of the welding mechanism 1, a heat preservation table fixing mechanism 2 is arranged on one side of the bottom of the welding mechanism 1, and a meshing rack 203 is symmetrically arranged on one side of the bottom of the heat preservation table fixing mechanism 2, the welding mechanism 1 comprises a first lifting bracket 101, a motor cover 102 is fixedly installed on the top of the first lifting bracket 101, a lifting motor 103 is fixedly installed on one side of the inside of the motor cover 102, and the output end of the lifting motor 103 is fixedly connected to a first sprocket transmission assembly 104, the bottom of the first sprocket transmission component 104 is symmetrically connected with a lifting threaded rod 105, and the outer sides of the two lifting threaded rods 105 are threadedly connected with a lifting threaded sleeve 106, wherein a second lifting bracket 107 is fixedly installed on one side of the two lifting threaded sleeves 106, and the lifting motor 103 is used to drive the first sprocket transmission component 104 and the lifting threaded rod 105 to rotate, so that the lifting threaded sleeve 106 drives the second lifting bracket 107 to move up and down, thereby adjusting the height of the laser welding machine body 126, which can not only weld the top of the food insulation table, but also weld the bottom of the food insulation table.

[0046] A first rotating motor 108 is fixedly installed on one side of the top of the second lifting bracket 107, and a rotating bevel gear 109 is fixedly connected to the output end of the first rotating motor 108. The bottom of the rotating bevel gear 109 is meshedly connected with a meshing bevel gear ring 110, and the meshing bevel gear ring 110 is rotatably connected to the second lifting bracket 107, wherein first rotating connecting shafts 111 are symmetrically installed on both sides of the inner side of the meshing bevel gear ring 110, and a rotating inner ring 112 is rotatably connected between the two first rotating connecting shafts 111. The rotating bevel gear 109 is driven to rotate by the first rotating motor 108, and the meshing connection between the rotating bevel gear 109 and the meshing bevel gear ring 110 is utilized to enable the laser welding machine body 126 to rotate in the horizontal direction. At the same time, the second rotating motor 114 is used to drive the rotating main gear 115 to rotate, and the meshing connection between the rotating main gear 115 and the rotating slave gear 116 is utilized to enable the rotating inner ring 112 to rotate in the vertical direction, thereby adjusting the welding angle of the laser welding machine body 126.

[0047] A translation bracket 113 is fixedly installed in the middle of the rotating inner ring 112, a second rotating motor 114 is fixedly installed on the top side of the translation bracket 113, an output end of the second rotating motor 114 is fixedly connected to a rotating main gear 115, a rotating slave gear 116 is meshedly connected to the bottom of the rotating main gear 115, and the rotating slave gear 116 is fixedly installed on the outside of the first rotating connecting shaft 111, a translation motor 117 is fixedly installed on one side of the translation bracket 113, and an output end of the translation motor 117 is fixedly connected to a translation threaded rod 116. 18, the outer side of the translation threaded rod 118 is threadedly connected with a translation threaded sleeve 119, the bottom of the translation threaded sleeve 119 is rotatably connected with a second rotation connecting shaft 120, the bottom of the second rotation connecting shaft 120 is fixedly connected with a switching bracket 121, the bottom of the translation threaded sleeve 119 is symmetrically installed with a rotating bracket 122 near the outer side of the second rotation connecting shaft 120, the outer side of the rotating bracket 122 is fixedly installed with a third rotating motor 123, the output end of the third rotating motor 123 is fixedly connected with a rotating worm 124, and the rotating worm 121 is fixedly connected with the output end of the third rotating motor 123. A rotating worm gear 125 is meshedly connected to one side of 24, and the rotating worm gear 125 is fixedly installed on the outer side of the first rotating connection shaft 111. A laser welding machine body 126 is fixedly installed on one side of the bottom of the switching bracket 121, and an infrared laser lamp 127 is fixedly installed on the side of the switching bracket 121 away from the laser welding machine body 126. The translation threaded rod 118 is driven to rotate by the translation motor 117, so that the translation threaded sleeve 119 drives the laser welding machine body 126 to move in the horizontal direction, thereby adjusting the welding position of the laser welding machine body 126, thereby realizing all-round welding of the food insulation table, and the rotating worm 124 is driven to rotate by the third rotating motor 123. The meshing connection between the rotating worm 124 and the rotating worm gear 125 can be used to enable the switching bracket 121 to drive the laser welding machine body 126 and the infrared laser lamp 127 to rotate. By switching the positions of the laser welding machine body 126 and the infrared laser lamp 127, the infrared laser lamp 127 is used to calibrate the welding point, thereby improving the accuracy of the welding position of the laser welding machine body 126.

[0048] A fixed base 128 is fixedly installed on one side of the bottom of the first lifting bracket 101, and an opening and closing gear 129 is symmetrically rotated inside the fixed base 128. An opening and closing rack 130 is meshed and connected to the top of the opening and closing rack 130. A sliding bracket 131 is fixedly installed on the top of the opening and closing rack 130. A lifting sliding rod 132 is fixedly installed inside the sliding bracket 131. A lifting sliding sleeve 133 is slidably connected to the outer side of the lifting sliding rod 132. A support block 134 is fixedly installed between the two lifting sliding sleeves 133. The end of the support block 134 is fixedly connected There is an exhaust fan 135, and both sides of the support block 134 and the exhaust fan 135 are provided with limited sliding grooves 136. A dust cover 137 is fixedly installed at the bottom of the exhaust fan 135, and a collecting cover 138 is fixedly installed on the top of the exhaust fan 135. A connecting pipe 139 is fixedly connected to one side of the collecting cover 138. An exhaust gas treatment device 140 is fixedly installed at the end of the connecting pipe 139. The exhaust gas treatment device 140 is fixedly connected to the support block 134. A bottom connecting block 141 is fixedly installed on one side of the bottom of the sliding bracket 131, and the outer side of the bottom connecting block 141 is fixedly installed. There is a bottom collection box 142, a fixed pulley 143 is symmetrically installed on the inner side of the top of the first lifting bracket 101, and a connecting wire rope 144 is wound around the outer side of the fixed pulley 143. The connecting wire rope 144 is fixedly connected to the support block 134 and the second lifting bracket 107 respectively. By utilizing the inner ring connection between the opening and closing gear 129 and the opening and closing rack 130, when the opening and closing gear 129 rotates, the opening and closing rack 130 can drive the sliding bracket 131 and the exhaust fan 135 to move, and the exhaust fan 135 and the bottom collection box 142 can be stored in the fixed base 128. The top can not only improve the stability of the entire laser welding machine, but also save space. It utilizes the characteristics of the sliding connection between the lifting sliding sleeve 133 and the lifting sliding rod 132, and utilizes the fixed pulley 143 and the connecting wire rope 144 to connect the second lifting bracket 107 and the support block 134, so that the exhaust fan 135 and the second lifting bracket 107 can slide relative to each other, so as to better fit the top of the welding part, and utilizes the exhaust fan 135 to absorb the harmful gas generated by welding, and utilizes the exhaust gas treatment equipment 140 to treat the exhaust gas, so as to achieve the purpose of protecting the environment.

[0049] The heat preservation table fixing mechanism 2 includes a movable base 201, and universal wheels 202 are fixedly installed around the bottom of the movable base 201. The meshing rack 203 is symmetrically installed on one side of the bottom of the movable base 201. The meshing rack 203 is meshed and connected with the opening and closing gear 129. The universal wheel 202 is used to realize the movement of the movable base 201. At the same time, the meshing connection between the meshing rack 203 and the opening and closing gear 129 can be used to realize the connection between the movable base 201 and the bottom connecting block 141. When the movable base 201 is connected to the bottom connecting block 141, the opening and closing rack 130 and the sliding bracket 131 can be driven to slide, so that the exhaust fan 135 and the bottom collecting box 142 can be moved out from the top of the fixed base 128. When the laser welding machine body 126 is welded, harmful gases can be absorbed and the residues generated by welding can be collected.

[0050] The top of the mobile base 201 is symmetrically installed with bottom adjustment brackets 204, one side of the two bottom adjustment brackets 204 is rotatably connected to the second sprocket transmission assembly 205, one side of the second sprocket transmission assembly 205 is fixedly connected to the first adjustment knob 206, the other side of the second sprocket transmission assembly 205 is symmetrically connected to the first bidirectional threaded rod 207, the outer side of the first bidirectional threaded rod 207 is symmetrically threadedly connected to the adjusting threaded sleeve 208, the top of the adjusting threaded sleeve 208 is rotatably connected to the adjusting rotating rod 209, the top of the adjusting rotating rod 209 is rotatably connected to the adjusting sliding sleeve 210, and the two adjustment The middle part of the section rotating rod 209 is rotatably connected with an adjusting rotating shaft 211, the inner part of the adjusting sliding sleeve 210 is slidably connected with an adjusting sliding rod 212, the outer side of the adjusting sliding rod 212 is fixedly installed with a top adjusting bracket 213, the tops of the two top adjusting brackets 213 are fixedly installed with a clamping bracket 214, one side of the clamping bracket 214 is rotatably connected with a third sprocket transmission assembly 215, one side of the third sprocket transmission assembly 215 is fixedly connected with a second adjusting knob 216, and the other side of the third sprocket transmission assembly 215 is symmetrically installed with a second bidirectional threaded rod 217, the second bidirectional threaded rod 217 The outer side of the clamping thread sleeve 218 is symmetrically threadedly connected, and a clamping sliding plate 219 is fixedly installed on the top of the clamping thread sleeve 218 on one side. A rotating base 220 is symmetrically installed on the top of the clamping sliding plate 219. A fixing bolt 221 is threadedly connected to one side of the rotating base 220. The inner part of the rotating base 220 is rotatably connected to a clamping arm 222. By rotating the first adjusting knob 206, the second sprocket transmission assembly 205 and the first bidirectional threaded rod 207 are rotated, so that the adjusting thread sleeve 208 can drive the adjusting rotating rod 209 to rotate while sliding relatively on the outer side of the first bidirectional threaded rod 207. , thereby realizing the raising of the top adjustment bracket 213 and the clamping bracket 214, which is convenient for welding the bottom of the food insulation table. At the same time, by rotating the second adjustment knob 216, the third sprocket transmission assembly 215 and the second bidirectional threaded rod 217 are driven to rotate, so that the clamping threaded sleeve 218 drives the clamping sliding plate 219 and the clamping arm 222 to move relative to each other, so that the food insulation table can be clamped and fixed. Through the characteristics of the clamping arm 222 being rotatably connected to the rotating base 220, the clamping arm 222 can be rotated and fixed by the fixing bolt 221, thereby improving the clamping effect of the rotating clamping arm 222.

[0051] Working principle: Before using the laser welding machine and welding method for food warming table, it is necessary to check the overall condition of the device to ensure that it can work normally. Figure 1 - Fig.11As shown, first, place the food insulation table to be welded on the top of the clamping bracket 214, and rotate the first adjusting knob 206 to mobilize the second sprocket transmission assembly 205 and the first bidirectional threaded rod 207 to rotate, so that the adjusting threaded sleeve 208 can slide relatively on the outside of the first bidirectional threaded rod 207 and drive the adjusting rotating rod 209 to rotate, thereby realizing the raising of the top adjusting bracket 213 and the clamping bracket 214, which is convenient for welding the bottom of the food insulation table. At the same time, the second adjusting knob 216 is used to drive the third sprocket transmission assembly 215 and the second bidirectional threaded rod 217 to rotate, so that the clamping threaded sleeve 218 drives the clamping sliding plate 219 and the clamping arm 222 to move relatively, so that the food insulation table can be clamped and fixed. The rotating base 220 has the characteristic of rotating connection, and the clamping arm 222 can be rotated and fixed by the fixing bolt 221, so as to improve the clamping effect of the rotating clamping arm 222, and the movement of the mobile base 201 is realized by the universal wheel 202. At the same time, the meshing connection between the meshing rack 203 and the opening and closing gear 129 can realize the connection between the mobile base 201 and the bottom connecting block 141. When the mobile base 201 is connected to the bottom connecting block 141, the opening and closing rack 130 and the sliding bracket 131 can be driven to slide, so that the exhaust fan 135 and the bottom collecting box 142 can be moved out from the top of the fixed base 128, so that when the laser welding machine body 126 is welded, it can not only absorb harmful gases, but also collect the residues produced by welding.

[0052] Secondly, the lifting motor 103 is used to drive the first sprocket transmission assembly 104 and the lifting threaded rod 105 to rotate, so that the lifting threaded sleeve 106 drives the second lifting bracket 107 to move up and down, thereby adjusting the height of the laser welding machine body 126, not only can the top of the food insulation table be welded, but also the bottom of the food insulation table can be welded. The rotating bevel gear 109 is driven to rotate by the first rotating motor 108, and the meshing connection between the rotating bevel gear 109 and the meshing bevel gear ring 110 is utilized. The laser welding machine body 126 can be moved horizontally. It rotates upward, and at the same time, the second rotating motor 114 is used to drive the rotating main gear 115 to rotate. By utilizing the meshing connection between the rotating main gear 115 and the rotating slave gear 116, the rotating inner ring 112 can be rotated in the vertical direction, thereby adjusting the welding angle of the laser welding machine body 126. The translation motor 117 drives the translation threaded rod 118 to rotate, so that the translation threaded sleeve 119 drives the laser welding machine body 126 to move in the horizontal direction, thereby adjusting the welding position of the laser welding machine body 126, thereby realizing all-round welding of the food warming table.

[0053] Finally, the rotating worm 124 is driven to rotate by the third rotating motor 123, and the meshing connection between the rotating worm 124 and the rotating worm wheel 125 is utilized to enable the switching bracket 121 to drive the laser welding machine body 126 and the infrared laser lamp 127 to rotate. By switching the positions of the laser welding machine body 126 and the infrared laser lamp 127, the infrared laser lamp 127 is used to calibrate the welding point, thereby improving the accuracy of the welding position of the laser welding machine body 126. By utilizing the inner ring connection between the opening and closing gear 129 and the opening and closing rack 130, when the opening and closing gear 129 rotates, the opening and closing rack 130 can drive the sliding bracket 131 and the exhaust fan 1 35 is movable, and the exhaust fan 135 and the bottom collecting box 142 can be stored on the top of the fixed base 128, which can not only improve the stability of the entire laser welding machine, but also save space. The lifting sliding sleeve 133 and the lifting sliding rod 132 are slidingly connected, and the fixed pulley 143 and the connecting wire rope 144 are used to connect the second lifting bracket 107 and the support block 134, so that the exhaust fan 135 and the second lifting bracket 107 can slide relative to each other, so as to better fit the top of the welding part, and the exhaust fan 135 is used to absorb the harmful gas generated by welding, and the exhaust gas treatment equipment 140 is used to treat the exhaust gas, so as to achieve the purpose of protecting the environment.

[0054] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser welding machine for a food warming table, comprising a welding mechanism (1), and an exhaust gas treatment device (140) installed on one side of the welding mechanism (1); A heat preservation table fixing mechanism (2) is provided on one side of the bottom of the welding mechanism (1), and meshing racks (203) are symmetrically provided on one side of the bottom of the heat preservation table fixing mechanism (2); It is characterized in that Also includes: The welding mechanism (1) comprises a first lifting bracket (101), a motor cover (102) is fixedly mounted on the top of the first lifting bracket (101), a lifting motor (103) is fixedly mounted on one side of the motor cover (102), an output end of the lifting motor (103) is fixedly connected to a first sprocket transmission assembly (104), a bottom of the first sprocket transmission assembly (104) is symmetrically connected to lifting threaded rods (105), and the outer sides of the two lifting threaded rods (105) are both threadedly connected to lifting threaded sleeves (106); A second lifting bracket (107) is fixedly installed on one side of the two lifting threaded sleeves (106); a first rotating motor (108) is fixedly installed on one side of the top of the second lifting bracket (107); an output end of the first rotating motor (108) is fixedly connected to a rotating bevel gear (109); a bottom of the rotating bevel gear (109) is meshedly connected to a meshing bevel gear ring (110); and the meshing bevel gear ring (110) is rotationally connected to the second lifting bracket (107); Wherein, first rotating connecting shafts (111) are symmetrically installed on both sides of the meshing bevel gear ring (110), a rotating inner ring (112) is rotatably connected between the two first rotating connecting shafts (111), a translation bracket (113) is fixedly installed in the middle of the rotating inner ring (112), a second rotating motor (114) is fixedly installed on the top side of the translation bracket (113), an output end of the second rotating motor (114) is fixedly connected to a rotating main gear (115), the bottom of the rotating main gear (115) is meshedly connected to a rotating slave gear (116), and the rotating slave gear (116) is fixedly installed on the outer side of the first rotating connecting shaft (111).

2. A laser welding machine for a food warming table according to claim 1, characterized in that: A translation motor (117) is fixedly mounted on one side of the translation bracket (113); a translation threaded rod (118) is fixedly connected to the output end of the translation motor (117); a translation threaded sleeve (119) is threadedly connected to the outer side of the translation threaded rod (118); a second rotation connecting shaft (120) is rotationally connected to the bottom of the translation threaded sleeve (119); a switching bracket (121) is fixedly connected to the bottom of the second rotation connecting shaft (120); a rotation bracket (122) is symmetrically mounted on the outer side of the bottom of the translation threaded sleeve (119) near the second rotation connecting shaft (120); and a third rotation motor (123) is fixedly mounted on the outer side of the rotation bracket (122).

3. The laser welding machine for a food warming table according to claim 2, characterized in that: The output end of the third rotating motor (123) is fixedly connected to a rotating worm (124), one side of the rotating worm (124) is meshingly connected to a rotating worm wheel (125), and the rotating worm wheel (125) is fixedly mounted on the outside of the first rotating connecting shaft (111); a laser welding machine body (126) is fixedly mounted on one side of the bottom of the switching bracket (121), and an infrared laser lamp (127) is fixedly mounted on a side of the switching bracket (121) away from the laser welding machine body (126).

4. The laser welding machine for a food warming table according to claim 3, characterized in that: A fixed base (128) is fixedly installed on one side of the bottom of the first lifting bracket (101); an opening and closing gear (129) is symmetrically rotatably connected inside the fixed base (128); an opening and closing rack (130) is meshedly connected to the top of the opening and closing gear (129); a sliding bracket (131) is fixedly installed on the top of the opening and closing rack (130); a lifting sliding rod (132) is fixedly installed inside the sliding bracket (131); a lifting sliding sleeve (133) is slidably connected to the outer side of the lifting sliding rod (132); and a support block (134) is fixedly installed between the two lifting sliding sleeves (133).

5. The laser welding machine for a food warming table according to claim 4, characterized in that: The end of the support block (134) is fixedly connected to an exhaust fan (135), and both sides of the support block (134) and the exhaust fan (135) are provided with limiting sliding grooves (136). The bottom of the exhaust fan (135) is fixedly installed with a dust cover (137), and the top of the exhaust fan (135) is fixedly installed with a collecting cover (138), and one side of the collecting cover (138) is fixedly connected to a connecting pipe (139). The exhaust gas treatment device (140) is fixedly installed at the end of the connecting pipe (139), and the exhaust gas treatment device (140) is fixedly connected to the support block (134).

6. The laser welding machine for a food warming table according to claim 5, characterized in that: A bottom connecting block (141) is fixedly mounted on one side of the bottom of the sliding bracket (131), a bottom collecting box (142) is fixedly mounted on the outer side of the bottom connecting block (141), a fixed pulley (143) is symmetrically mounted on the inner side of the top of the first lifting bracket (101), a connecting steel wire rope (144) is wound around the outer side of the fixed pulley (143), and the connecting steel wire rope (144) is fixedly connected to the supporting block (134) and the second lifting bracket (107) respectively.

7. The laser welding machine for a food warming table according to claim 6, characterized in that: The heat preservation table fixing mechanism (2) comprises a movable base (201), universal wheels (202) are fixedly installed around the bottom of the movable base (201), the meshing rack (203) is symmetrically installed on one side of the bottom of the movable base (201), the meshing rack (203) is meshedly connected with the opening and closing gear (129), the top of the movable base (201) is symmetrically installed with a bottom adjustment bracket (204), one side of the two bottom adjustment brackets (204) is rotatably connected to a second sprocket transmission assembly (205), one side of the second sprocket transmission assembly (205) is fixedly connected to a first adjustment knob (206), the other side of the second sprocket transmission assembly (205) is symmetrically connected to a first bidirectional threaded rod (207), and the outer side of the first bidirectional threaded rod (207) is symmetrically threadedly connected to an adjustment threaded sleeve (208).

8. The laser welding machine for a food warming table according to claim 7, characterized in that: The top of the adjusting threaded sleeve (208) is rotatably connected to an adjusting rotating rod (209), the top of the adjusting rotating rod (209) is rotatably connected to an adjusting sliding sleeve (210), the middle parts of the two adjusting rotating rods (209) are rotatably connected to an adjusting rotating shaft (211), the inside of the adjusting sliding sleeve (210) is slidably connected to an adjusting sliding rod (212), a top adjusting bracket (213) is fixedly installed on the outer side of the adjusting sliding rod (212), a clamping bracket (214) is fixedly installed on the top of the two top adjusting brackets (213), one side of the clamping bracket (214) is rotatably connected to a third sprocket transmission assembly (215), and one side of the third sprocket transmission assembly (215) is fixedly connected to a second adjusting knob (216).

9. The laser welding machine for a food warming table according to claim 8, characterized in that: A second bidirectional threaded rod (217) is symmetrically installed on the other side of the third sprocket transmission assembly (215); a clamping threaded sleeve (218) is symmetrically threadedly connected to the outer side of the second bidirectional threaded rod (217); a clamping sliding plate (219) is fixedly installed on the top of the clamping threaded sleeve (218) on one side; a rotating base (220) is symmetrically installed on the top of the clamping sliding plate (219); a fixing bolt (221) is threadedly connected to one side of the rotating base (220); and a clamping arm (222) is rotatably connected to the inside of the rotating base (220).

10. A welding method of a laser welding machine for a food warming table, using the laser welding machine for a food warming table as claimed in claim 9, the welding method steps are as follows: Step 1: Place the food warming table to be welded on the top of the clamping bracket (214), and rotate the first adjusting knob (206) to mobilize the second sprocket transmission assembly (205) and the first bidirectional threaded rod (207) to rotate, so that the adjusting threaded sleeve (208) can slide relatively on the outer side of the first bidirectional threaded rod (207) and drive the adjusting rotating rod (209) to rotate, thereby realizing the elevation of the top adjusting bracket (213) and the clamping bracket (214), so as to facilitate welding the bottom of the food warming table. At the same time, the second adjusting knob (216) is used to drive the third sprocket transmission assembly (215) and the second bidirectional threaded rod (217) to rotate, so that the clamping threaded sleeve (218) drives the clamping sliding plate (219) and the clamping arm (222) to move relatively, so that the food warming table can be clamped and fixed, and the clamping arm (222) and the rotating bottom are connected. The seat (220) is rotatably connected, and the clamping arm (222) can be rotated and fixed by the fixing bolt (221), thereby improving the clamping effect of the rotating clamping arm (222). The universal wheel (202) is used to realize the movement of the movable base (201). At the same time, the meshing connection between the meshing rack (203) and the opening and closing gear (129) can be used to realize the connection between the movable base (201) and the bottom connecting block (141). When the movable base (201) is connected to the bottom connecting block (141), the opening and closing rack (130) and the sliding bracket (131) can be driven to slide, so that the exhaust fan (135) and the bottom collecting box (142) can be moved out from the top of the fixed base (128). When the laser welding machine body (126) is welded, it can not only absorb harmful gases, but also collect the residues generated by welding. Step 2: Using the lifting motor (103) to drive the first sprocket transmission assembly (104) and the lifting threaded rod (105) to rotate, so that the lifting threaded sleeve (106) drives the second lifting bracket (107) to move up and down, thereby adjusting the height of the laser welding machine body (126). Not only can the top of the food insulation table be welded, but also the bottom of the food insulation table can be welded. The rotating bevel gear (109) is driven to rotate by the first rotating motor (108). The meshing connection between the rotating bevel gear (109) and the meshing bevel gear ring (110) is used to enable the laser welding machine body (126) to be moved horizontally. The laser welding machine body (126) is rotated upward, and the second rotating motor (114) is used to drive the rotating main gear (115) to rotate. The rotating inner ring (112) is rotated in the vertical direction by utilizing the meshing connection between the rotating main gear (115) and the rotating slave gear (116), thereby adjusting the welding angle of the laser welding machine body (126). The translation motor (117) drives the translation threaded rod (118) to rotate, so that the translation threaded sleeve (119) drives the laser welding machine body (126) to move in the horizontal direction, thereby adjusting the welding position of the laser welding machine body (126), thereby realizing all-round welding of the food insulation table; Step 3: The rotating worm (124) is driven to rotate by the third rotating motor (123), and the meshing connection between the rotating worm (124) and the rotating worm wheel (125) is utilized to enable the switching bracket (121) to drive the laser welding machine body (126) and the infrared laser light (127) to rotate. By switching the positions of the laser welding machine body (126) and the infrared laser light (127), the infrared laser light (127) is used to calibrate the welding point, thereby improving the accuracy of the welding position of the laser welding machine body (126). By utilizing the inner ring connection between the opening and closing gear (129) and the opening and closing rack (130), when the opening and closing gear (129) rotates, the opening and closing rack (130) can drive the sliding bracket (131) and the exhaust fan. The machine (135) can be moved, and the exhaust fan (135) and the bottom collecting box (142) can be stored on the top of the fixed base (128), which can not only improve the stability of the entire laser welding machine, but also save space. The characteristics of the sliding connection between the lifting sliding sleeve (133) and the lifting sliding rod (132) are utilized, and the fixed pulley (143) and the connecting wire rope (144) are used to connect the second lifting bracket (107) and the support block (134), so that the exhaust fan (135) and the second lifting bracket (107) slide relative to each other, so as to better fit the top of the welding part, and the exhaust fan (135) is used to absorb the harmful gas generated by welding, and the waste gas treatment equipment (140) is used to treat the waste gas, so as to achieve the purpose of protecting the environment.

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