Clamping equipment of rake type drying assembly for plasma arc welding machine and working method of clamping equipment

Abstract

The invention relates to the technical field of welding equipment, in particular to clamping equipment of a rake type drying assembly for a plasma arc welding machine and a working method thereof.The clamping equipment comprises a base, a conveying belt, a clamping assembly, a supporting seat and a rotary table, the upper end of the base is fixedly connected with a limiting frame, and the rotary table is rotationally connected into the limiting frame; the clamping assembly comprises a pair of concave clamping blocks, the concave clamping blocks are used for clamping the rake tooth rod, the outer ends of the concave clamping blocks are fixedly connected with nut pipes, the inner sides of the nut pipes are in threaded connection with first screws, the two ends of the concave clamping blocks are in sliding fit with guide frames, the first screws are rotationally connected with one ends of the guide frames, and the other ends of the first screws are in threaded connection with the guide frames. One end of the guide frame is fixedly connected with a rotating disc, and the concave clamping block is in sliding fit with the rotating disc; according to the automatic clamping device, the automatic clamping function is conveniently, rapidly and efficiently achieved.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, and in particular to a clamping device of a rake-type drying component for a plasma arc welding machine and a working method thereof. Background Art

[0002] The drying principle of the rake dryer is that the object to be dried is added from the middle of the top of the shell. Under the stirring of the rake teeth that rotate forward and backward continuously, the material moves back and forth axially, and the surface in contact with the inner wall of the shell is constantly renewed. It is indirectly heated by steam, evenly stirred by the rake teeth, and crushed by the crushing rods, so that the moisture on the surface of the material can be discharged more advantageously. The vaporized moisture passes through the dry dust collector, wet dust collector, and condenser and is discharged from the outlet of the vacuum pump. Therefore, the rake teeth are one of the indispensable and important components in the drying process.

[0003] Nowadays, in the actual production and manufacturing process of the rake tooth assembly, it is usually necessary to first insert the rake tooth into the slot opened in the center of one end of the rake tooth rod, and use a clamping tool to clamp the two to keep them stable, and then use a plasma arc welder to weld and fix the clamped parts of the two. However, nowadays, the assembly and clamping of the rake teeth are all done manually. After the staff dock the two, they need to keep the docking state stable and then clamp them. Finally, they are welded by a plasma arc welder. The automatic clamping function cannot be realized, the degree of automation is low, and the production efficiency is low.

[0004] Therefore, it is necessary to provide a clamping device for a rake-type drying assembly for a plasma arc welding machine and a working method thereof, which can achieve the effect of automatic clamping. Summary of the invention

[0005] The object of the present invention is to provide a clamping device for a rake-type drying assembly for a plasma arc welding machine and a working method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a holding device for a rake-type drying assembly for a plasma arc welding machine and a working method thereof, comprising a base, a conveyor belt, a holding assembly, a support seat and a turntable,

[0007] The upper end of the base is fixedly connected to a limit frame, and the turntable is rotatably connected in the limit frame;

[0008] The clamping assembly is provided with at least one group, and the clamping assembly includes a pair of concave clamping blocks, the pair of concave clamping blocks are used to clamp the rake tooth rod, the outer end of the concave clamping block is fixedly connected with a nut tube, the inner side of the nut tube is threadedly connected with a screw rod, the two ends of the concave clamping block are slidably matched with a guide frame, the screw rod is rotatably connected to one end of the guide frame, and one end of the guide frame is fixedly connected with a rotating disk, and the concave clamping block is slidably matched with the rotating disk;

[0009] The support seat is arranged on the upper side of the turntable, and a groove matching the rake tooth rod is arranged on the upper side of the support seat, and the support seat is arranged corresponding to the clamping assembly;

[0010] The conveyor belt is used for conveying the rake teeth and is in contact with the butt end of the rake tooth rod, and the rotating disk drives the rake tooth rod to rotate until it engages with the rake teeth.

[0011] In one embodiment, the plasma arc welding machine includes a welding gun and a horizontal displacement mechanism, wherein the horizontal displacement mechanism drives the welding gun to move, and the welding gun welds and fixes the joint between the rake tooth rod and the rake teeth.

[0012] In one embodiment, a center seat is fixedly connected to the middle side of the turntable, and the center seat is rotatably connected to the rotating disk. A transmission groove and a conical groove are opened on one side of the rotating disk. The outer end of the screw rod is fixedly connected to a bevel gear one, and one side of the bevel gear one is meshingly connected to a bevel gear two, and the bevel gear two is rotatably connected to the conical groove. One end of the bevel gear two is fixedly connected to a sprocket one, and a motor assembly is provided on the inner side of the center seat, and a sprocket two is provided on the driving end of the motor assembly. A pair of sprockets one and two are connected by chain transmission.

[0013] In one embodiment, trapezoidal grooves are provided at the upper and lower ends of the rotating disk, an inner concave plate is provided on the lower side of the rotating disk, a step groove is provided on the upper side of the inner concave plate, a convex block is fixedly connected to the upper end of the inner concave plate, the trapezoidal groove is adapted to the convex block, and the lower side of the inner concave plate passes through the turntable and slides with it.

[0014] In one embodiment, the lower end of the inner concave plate is fixedly connected to a connecting rod, the lower end of the connecting rod is fixedly connected to an abutment plate, one end of the abutment plate is provided with an oblique chamfer, the upper end of the abutment plate is provided with a pair of spring retractable rods, and the upper ends of the spring retractable rods are connected to the turntable;

[0015] An annular groove is provided at the upper end of the base, the abutment plate extends into the annular groove and moves along the annular groove, a pair of inner and outer arc bars are fixedly connected in the annular groove, one end of the inner and outer arc bars is provided with an oblique chamfer, the inner and outer arc bars are adapted to the abutment plate, a gap is left between the inner and outer arc bars and the turntable, and the inner and outer arc bars extend from the conveyor belt to the plasma arc welding machine.

[0016] In one embodiment, the support seat includes a fixed seat and a movable seat, the fixed seat is fixedly connected to the turntable, the movable seat is slidably matched with the turntable, a plurality of spring telescopic columns are arranged between the fixed seat and the movable seat, a pair of concave clips are fixedly connected to the upper end of the movable seat, the concave clips are used to clamp the rake teeth, and the limit frame limits the outer ends of the rake teeth.

[0017] In one embodiment, the plasma arc welding machine also includes a lifting plate, which is used to drive the welding gun to lift and lower. A plurality of guide telescopic rods are arranged at the upper end of the lifting plate, and a support plate is arranged at the upper end of the guide telescopic rod. One end of the lifting plate is fixedly connected to an extension plate, and the lower end of the support plate is rotatably connected to screw rod 2, which passes through the extension plate and is threadedly connected thereto. The lower end of the support plate is fixedly connected to a base, and a motor component is fixedly connected to the inside of the base, and the motor component is used to drive screw rod 2.

[0018] In one embodiment, one side of the screw rod two is fixedly connected with a bevel gear three, one side of the bevel gear three is meshingly connected with a bevel gear four, one end of the bevel gear four is fixedly connected with the screw rod three, one side of the screw rod three is threadedly connected with a threaded sleeve, the threaded sleeve passes through the limit frame and slides with it, one end of the threaded sleeve is fixedly connected with a push block, the push block is used to push the movable seat, the inner side of the limit frame is provided with an adaptation groove adapted to the push block, and a plurality of guide telescopic rods are arranged between the push block and the adaptation groove.

[0019] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention, through the rotation of a pair of screw rods, drives the nut tube to push the concave clamping block to move along the guide frame, so that the pair of concave clamping blocks clamp the rake tooth rod to fix it, thereby improving the stability of subsequent docking assembly and welding; then the turntable drives the clamped rake tooth rod to rotate, so that the rake tooth rod moves to dock with the conveyor belt, the conveyor belt transmits the rake teeth to contact the docking end of the rake tooth rod, and the clamped rake tooth rod is driven to rotate by the rotating disk until the slot and the rake teeth are aligned with each other, and under the transportation action of the conveyor belt, the rake teeth and the rake tooth rod are engaged to complete the assembly and docking work; then the turntable drives the mutually engaged rake tooth rod and the rake teeth to move to the lower side of the plasma arc welding machine, and drives the welding gun to move by the horizontal displacement mechanism, so that the welding gun welds and fixes the joint between the rake tooth rod and the rake teeth, and then the rotating disk drives the rake tooth rod to rotate 180 degrees, and the welding gun welds the rake tooth rod and the rake teeth after turning over again, so that the assembly and welding work can be completed, and the function of comprehensive welding is realized, and the degree of automation is high;

[0020] Four groups of clamping components are provided, which correspond to the rake bar loading station, the rake tooth loading station, the welding station and the unloading station respectively, so that the four stations can operate simultaneously, greatly improving the work efficiency and realizing the continuous assembly and welding functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0022] In the attached picture:

[0023] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 is a cross-sectional schematic diagram of the present invention;

[0025] Figure 3 is a three-dimensional schematic diagram of the clamping assembly of the present invention;

[0026] Figure 4 is a top cross-sectional schematic diagram of the clamping assembly of the present invention;

[0027] Figure 5 is a three-dimensional schematic diagram of the back of the clamping assembly of the present invention;

[0028] Figure 6 yes Figure 2 A local enlarged schematic diagram of region A;

[0029] Figure 7 It is a three-dimensional schematic diagram of the bottom of the turntable of the present invention;

[0030] Figure 8 yes Figure 1 A local enlarged schematic diagram of area B;

[0031] Fig. 9 yes Figure 2 A local enlarged schematic diagram of the C region;

[0032] In the figure: 1, clamping assembly; 101, concave clamping block; 102, nut tube; 103, screw rod 1; 104, guide frame; 105, rotating disk; 106, bevel gear 1; 107, bevel gear 2; 108, sprocket wheel 1; 109, sprocket wheel 2; 110, convex block; 111, inner concave plate; 112, connecting rod; 113, abutment plate; 114, spring retracting rod;

[0033] 3. Plasma arc welding machine; 301. Welding gun; 302. Lifting plate; 303. Support plate; 304. Extension plate; 305. Screw rod 2; 306. Base; 307. Bevel gear 3; 308. Bevel gear 4; 309. Screw rod 3; 310. Threaded sleeve; 311. Push block;

[0034] 4. Turntable; 401. Center seat; 402. Annular groove; 403. Inner and outer arc strips;

[0035] 5. Fixed seat; 501. Movable seat; 502. Spring telescopic column; 503. Concave clamp;

[0036] 6. Rake tooth rod; 601. Rake teeth;

[0037] 8. Conveyor belt;

[0038] 9. Base; 901. Limiting frame. DETAILED DESCRIPTION

[0039] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0040] See also Figure 1-9 The present invention provides a technical solution: a clamping device for a rake-type drying assembly for a plasma arc welding machine and a working method thereof, comprising a base 9, a conveyor belt 8, a clamping assembly 1, a plasma arc welding machine 3, a support seat and a turntable 4,

[0041] The upper end of the base 9 is fixedly connected to the limit frame 901, and the turntable 4 is rotatably connected in the limit frame 901;

[0042] The clamping assembly 1 is provided with at least one group, and the clamping assembly 1 includes a pair of concave clamping blocks 101, and the pair of concave clamping blocks 101 are used to clamp the rake tooth rod 6, and the outer end of the concave clamping block 101 is fixedly connected with a nut tube 102, and the inner side of the nut tube 102 is threadedly connected with a screw rod 103, and the two ends of the concave clamping block 101 are slidably matched with a guide frame 104, and the screw rod 103 is rotatably connected to one end of the guide frame 104, and one end of the guide frame 104 is fixedly connected with a rotating disk 105, and the concave clamping block 101 is slidably matched with the rotating disk 105;

[0043] The support seat is arranged on the upper side of the turntable 4, and a groove matching with the rake tooth rod 6 is arranged on the upper side of the support seat, and the support seat is arranged correspondingly to the clamping assembly 1;

[0044] The conveyor belt 8 is used to transport the rake teeth 601 and is in contact with the butt end of the rake tooth rod 6 . The rotating disk 105 drives the rake tooth rod 6 to rotate until it engages with the rake teeth 601 .

[0045] First, the rake tooth rod 6 to be welded is placed on the support seat manually, and one end of the rake tooth rod 6 is extended between a pair of concave clamping blocks 101; then, a pair of screws 103 are rotated to drive the nut tube 102 to push the concave clamping block 101 to move along the guide frame 104, so that the pair of concave clamping blocks 101 clamp the rake tooth rod 6 to fix it, thereby improving the stability of subsequent docking assembly and welding; then the turntable 4 drives the clamped rake tooth rod 6 to rotate, so that the rake tooth rod 6 moves to dock with the conveyor belt 8, and the conveyor belt 8 automatically transports and loads a plurality of rake teeth 601. Specifically, the conveyor belt 8 transmits the rake teeth 601 to contact with the docking end of the rake tooth rod 6, but At this time, it is impossible to determine whether the slot of the rake tooth rod 6 is aligned with the rake teeth 601. Therefore, the clamped rake tooth rod 6 is driven to rotate by the rotating disk 105 until the slot and the rake teeth 601 are aligned with each other. Under the transportation action of the conveyor belt 8, the rake teeth 601 are engaged with the rake tooth rod 6 to complete the assembly and docking work. Then the turntable 4 can drive the mutually engaged rake tooth rod 6 and the rake teeth 601 to move to the welding station. At this time, the rake teeth 601 are restricted to move in the limit frame 901, thereby ensuring the stability of the docking between the rake tooth rod 6 and the rake teeth 601, thereby realizing the function of automatic assembly and clamping, and no manual operation is required for assembly and clamping, with a high degree of automation and improved efficiency.

[0046] The plasma arc welding machine 3 includes a welding gun 301 and a horizontal displacement mechanism. The horizontal displacement mechanism drives the welding gun 301 to move, and the welding gun 301 welds and fixes the joint between the rake tooth rod 6 and the rake teeth 601 .

[0047] The clamped rake tooth rod 6 and rake teeth 601 are displaced to the lower side of the plasma arc welding machine 3, and the welding gun 301 is driven to displace by a horizontal displacement mechanism. The horizontal displacement mechanism includes but is not limited to adopting a motor screw drive or a cylinder drive, so that the welding gun 301 welds and fixes the joint of the rake tooth rod 6 and the rake teeth 601, and then the rotating disk 105 drives the rake tooth rod 6 to rotate 180 degrees, and the welding gun 301 welds the turned rake tooth rod 6 and the rake teeth 601 again, and the assembly clamping and welding work can be completed, and the function of automatic assembly and clamping and fixing is realized, and the degree of automation is high. Then the concave clamping block 101 can release the welded rake tooth assembly, and then the turntable 4 rotates it to the next station, and the staff takes it down, and then the next rake tooth rod 6 to be processed can be placed for processing;

[0048] Preferably, four groups of clamping assemblies 1 are provided, corresponding to the rake rod 6 loading station, the rake tooth 601 loading station, the welding station and the unloading station, respectively, so that the four stations can operate simultaneously, greatly improving the work efficiency and realizing the continuous welding function.

[0049] A center seat 401 is fixedly connected to the middle side of the turntable 4, and the center seat 401 is rotatably connected to the rotating disk 105. A transmission groove and a conical groove are opened on one side of the rotating disk 105. The outer end of the screw 103 is fixedly connected to a bevel gear 106, and one side of the bevel gear 106 is meshedly connected to a bevel gear 2 107. The bevel gear 2 107 is rotatably connected to the conical groove, and one end of the bevel gear 2 107 is fixedly connected to a sprocket 108. A motor assembly is arranged on the inner side of the center seat 401, and a sprocket 2 109 is arranged on the driving end of the motor assembly. A pair of sprockets 108 and sprockets 2 109 are connected by chain transmission.

[0050] Preferably, when it is necessary to drive the concave clamping block 101 for clamping, the sprocket 2 109 is driven to rotate through the motor assembly, and through the chain transmission, the sprockets 1 108 on both sides are driven to rotate at the same time, and the sprocket 1 108 drives the bevel gear 2 107, and the bevel gear 2 107 and the bevel gear 1 106 are meshed with each other, thereby driving the screw 103 to rotate, and the concave clamping block 101 can be driven to move, and the rake tooth rod 6 can be clamped.

[0051] Trapezoidal grooves are provided at the upper and lower ends of the rotating disk 105, an inner concave plate 111 is provided on the lower side of the rotating disk 105, a step groove is provided on the upper side of the inner concave plate 111, a convex block 110 is fixedly connected to the upper end of the inner concave plate 111, the trapezoidal groove is adapted to the convex block 110, and the lower side of the inner concave plate 111 passes through the turntable 4 and slides with it.

[0052] Preferably, an inner concave plate 111 is provided on the lower side of the rotating disk 105, and the inner concave plate 111 is initially fitted with the rotating disk 105, so that the convex block 110 is stuck in the trapezoidal groove, thereby fixing the rotating disk 105 and preventing it from rotating. At this time, the concave clamping block 101 can be driven by the motor assembly to clamp the rake tooth rod 6, and then the turntable 4 drives the rake tooth rod 6 to move to the conveyor belt 8. At this time, the rake tooth rod 6 needs to be driven to rotate along its axis to align the position engaged with the rake teeth 601, and the inner concave plate 111 needs to be driven to descend, so that the convex block 110 is away from the trapezoidal groove, and the rotating disk 105 can rotate. Specifically, because the concave clamping block 101 has clamped the rake tooth rod 6, that is, the concave clamping block 101 can no longer move further, the nut tube 102, the bevel gear 106, the bevel gear 2 107, the sprocket 108 and the sprocket 2 109 can no longer rotate relative to the rotating disk 105, that is, at this time The second wheel 109 and the rotating disk 105 form a whole, and the two are fixed together. At this time, if the motor assembly continues to apply a rotational driving force to the second sprocket 109, the driving force will be equivalent to directly acting on the rotatable rotating disk 105, which will directly drive the entire rotating disk 105 and all structures connected to it to rotate, and can drive the rake tooth rod 6 to rotate and find the correct position. Compared with the prior art, the motor or cylinder first drives the clamping plate to clamp the rake tooth rod 6, and then uses an additional motor to drive its rotation after clamping. Additional programming control is further required, that is, the corresponding control system is used to control the connection between the clamping process and the rotation process. In the present application, only a single motor assembly is used to drive the rotation. After driving the concave clamping block 101 for clamping, the clamped rake tooth rod 6 can be directly rotated to align the engagement position with the rake teeth 601. The degree of automation is high and cost is further saved.

[0053] The lower end of the inner concave plate 111 is fixedly connected with a connecting rod 112, and the lower end of the connecting rod 112 is fixedly connected with an abutting plate 113, one end of the abutting plate 113 is provided with an oblique chamfer, and the upper end of the abutting plate 113 is provided with a pair of spring retracting rods 114, and the upper ends of the spring retracting rods 114 are connected to the turntable 4;

[0054] An annular groove 402 is provided at the upper end of the base 9, and the abutment plate 113 extends into the annular groove 402 and moves along it. A pair of inner and outer arc bars 403 are fixedly connected in the annular groove 402, and one end of the inner and outer arc bars 403 is provided with an oblique chamfer. The inner and outer arc bars 403 are adapted to the abutment plate 113, and a gap is left between the inner and outer arc bars 403 and the turntable 4. The inner and outer arc bars 403 extend from the conveyor belt 8 to the plasma arc welding machine 3.

[0055] Preferably, when it is necessary to drive the inner concave plate 111 to descend, an abutment plate 113 and inner and outer arc strips 403 are provided. Specifically, one end of the abutment plate 113 and the inner and outer arc strips 403 are provided with matching chamfers. When the turntable 4 drives the rake tooth rod 6 to rotate, the abutment plate 113 is synchronously driven to move in the annular groove 402, and the inner and outer arc strips 403 are fixed in position. Due to the provision of a spring retractable rod 114, the upper end of the abutment plate 113 contacts the turntable 4. When the abutment plate 113 contacts the inner and outer arc strips 403, the chamfers of the two contact each other, and the abutment plate 113 moves downward along its inclined surface, thereby driving the inner concave plate 111 to descend.

[0056] Preferably, the length of the inner and outer arc strips 403 is set to extend from the conveyor belt 8 to the plasma arc welder 3, so that the abutment plate 113 automatically drops when entering the range of the conveyor belt 8 and the plasma arc welder 3, so that the motor assembly can drive the rotating disk 105 to rotate, realize the function of aligning the engaging position, and further realize the function of the rake teeth 601 turning 180 degrees for welding;

[0057] When the abutment plate 113 is away from the inner and outer arc strips 403, under the resetting action of the spring contraction rod 114, the abutment plate 113 and the inner concave plate 111 rise and reset again. However, since the rotating disk 105 is in a rotated state, the convex block 110 may not be able to re-engage in the trapezoidal groove at this time. Therefore, when it is necessary to loosen the rake tooth rod 6, the motor assembly drives the sprocket wheel 2 109 to reverse, thereby driving the rotating disk 105 to reverse until the trapezoidal groove and the convex block 110 are re-engaged, and the rotating disk 105 can be fixed again. At this time, the sprocket wheel 2 109 reverses, which can drive the concave clamping block 101 to reset, and the welded rake tooth rod 6 is loosened.

[0058] The support seat includes a fixed seat 5 and a movable seat 501. The fixed seat 5 is fixedly connected to the turntable 4. The movable seat 501 is slidably matched with the turntable 4. A plurality of spring telescopic columns 502 are arranged between the fixed seat 5 and the movable seat 501. A pair of concave clamps 503 are fixedly connected to the upper end of the movable seat 501. The concave clamps 503 are used to clamp the rake teeth 601. The limit frame 901 limits the outer ends of the rake teeth 601.

[0059] Preferably, a fixed seat 5 and a movable seat 501 are provided to support the rake tooth rod 6, and the movable seat 501 is arranged to be movable. Specifically, when the concave clamping piece 503 on the movable seat 501 is docked with the conveyor belt 8, the rake teeth 601 are thereby moved into the concave clamping piece 503, and then the rake tooth rod 6 rotates until the two are engaged, so that the rake teeth 601 completely enter the concave clamping piece 503, and then the turntable 4 rotates, driving the rake teeth 601 to rotate, and the rake teeth 601 are restricted in the limit frame 901, thereby moving to the lower side of the plasma arc welding machine 3, at which time the rake teeth 601 are moved to the lower side of the plasma arc welding machine 3. Due to the restriction of the concave clamping piece 503, the rake teeth 601 and the rake tooth rod 6 remain stable, and welding and fixing can be carried out to ensure the stability of the welding work. Then, the movable seat 501 is displaced toward the fixed seat 5 until the concave clamping piece 503 is separated from the rake teeth 601. At this time, the rotating disk 105 can drive the rake teeth 601 to rotate 180 degrees, and then the movable seat 501 can be reset to limit the rake teeth 601 again, and then the welding work can be continued, thereby completing the welding work on both sides of the rake teeth 601 and ensuring the accuracy of the welding position.

[0060] The plasma arc welding machine 3 also includes a lifting plate 302, which is used to drive the welding gun 301 to rise and fall. A plurality of guide telescopic rods are arranged at the upper end of the lifting plate 302, and a support plate 303 is arranged at the upper end of the guide telescopic rods. One end of the lifting plate 302 is fixedly connected to an extension plate 304, and the lower end of the support plate 303 is rotatably connected to a second screw 305, which passes through the extension plate 304 and is threadedly connected thereto. The lower end of the support plate 303 is fixedly connected to a base 306, and a motor component is fixedly connected inside the base 306, and the motor component is used to drive the second screw 305.

[0061] Preferably, when the front welding of the rake teeth 601 is completed and it needs to be flipped, the motor drives the screw rod 305 to rotate, and through the threaded connection with the extension plate 304, the extension plate 304 and the lifting plate 302 are driven to rise under the guidance of a number of guide telescopic rods, thereby leaving space for the rake teeth 601 to flip. After the flipping is completed, the lifting plate 302 is reset and lowered, so that the welding gun 301 is realigned with the welding position for welding, which is highly practical.

[0062] One side of the screw rod 2 305 is fixedly connected with a bevel gear 307, one side of the bevel gear 307 is meshingly connected with a bevel gear 4 308, one end of the bevel gear 4 308 is fixedly connected with a screw rod 309, one side of the screw rod 309 is threadedly connected with a threaded sleeve 310, the threaded sleeve 310 passes through the limit frame 901 and slides with it, one end of the threaded sleeve 310 is fixedly connected with a push block 311, the push block 311 is used to push the movable seat 501, an adaptation groove matched with the push block 311 is provided on the inner side of the limit frame 901, and a plurality of guide telescopic rods are arranged between the push block 311 and the adaptation groove.

[0063] Preferably, when the screw rod 2 305 rotates forward, thereby driving the lifting plate 302 to rise, the bevel gear 307 is also driven to rotate forward, and the bevel gear 307 drives the bevel gear 4 308 and the screw rod 309 to rotate. Under the guiding action of the guide telescopic rod, the threaded sleeve 310 is driven to move, and the push block 311 is pushed to move and push the movable seat 501, so that the movable seat 501 and the concave clamping piece 503 are moved away from the rake teeth 601, and then the rake teeth 601 can be driven to turn over, and then the screw rod 2 305 is reversed to drive the lifting plate 302 to descend, and the push block 311 is reset, and the movable seat 501 is reset under the resetting action of the spring telescopic column 502, and the concave clamping piece 503 limits the rake teeth 601 again, so that the welding gun 301 can align and weld the turned rake teeth 601, and the two have good synchronization, high degree of automation and cost saving.

[0064] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, internal communication between two elements, or an interaction relationship between two elements. For ordinary technicians in this field, the meanings of the above terms in this application can be understood according to specific circumstances.

[0065] The above is a detailed introduction to the clamping device and working method of a rake drying assembly for a plasma arc welding machine provided in an embodiment of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

Claims

1. A holding device for a rake-type drying assembly for a plasma arc welding machine, comprising a base (9), a conveyor belt (8), a holding assembly (1), a support seat and a turntable (4), characterized in that: The upper end of the base (9) is fixedly connected to a limiting frame (901), and the turntable (4) is rotatably connected in the limiting frame (901); The clamping assembly (1) comprises a pair of concave clamping blocks (101), the pair of concave clamping blocks (101) are used to clamp the rake tooth rod (6), the outer ends of the concave clamping blocks (101) are fixedly connected to a nut tube (102), the inner side of the nut tube (102) is threadedly connected to a screw rod (103), both ends of the concave clamping blocks (101) are slidably matched with a guide frame (104), the screw rod (103) is rotatably connected to one end of the guide frame (104), one end of the guide frame (104) is fixedly connected to a rotating disk (105), and the concave clamping blocks (101) are slidably matched with the rotating disk (105); The support seat is arranged on the upper side of the turntable (4), the upper side of the support seat is provided with a groove adapted to the rake tooth rod (6), and the support seat is arranged corresponding to the clamping assembly (1); The conveyor belt (8) is used to transport the rake teeth (601) and is in contact with the butt end of the rake tooth rod (6). The rotating disk (105) drives the rake tooth rod (6) to rotate until it engages with the rake teeth (601).

2. The holding device of a rake type drying assembly for a plasma arc welding machine according to claim 1, characterized in that: A plasma arc welder (3) is arranged on one side of the base (9), and the plasma arc welder (3) comprises a welding gun (301) and a horizontal displacement mechanism, wherein the horizontal displacement mechanism drives the welding gun (301) to move, and the welding gun (301) welds and fixes the joint between the rake tooth rod (6) and the rake teeth (601).

3. The clamping device of a rake type drying assembly for a plasma arc welding machine according to claim 2, characterized in that: A center seat (401) is fixedly connected to the middle side of the turntable (4), and the center seat (401) is rotatably connected to the rotating disk (105). A transmission groove and a conical groove are provided on one side of the rotating disk (105). The outer end of the screw rod (103) is fixedly connected to a bevel gear (106). One side of the bevel gear (106) is meshedly connected to a bevel gear (107). The bevel gear (107) is rotatably connected to the conical groove. One end of the bevel gear (107) is fixedly connected to a sprocket wheel (108). A motor assembly is provided on the inner side of the center seat (401), and a sprocket wheel (109) is provided on the driving end of the motor assembly. A pair of sprocket wheels (108) and sprocket wheels (109) are connected by chain transmission.

4. The clamping device of a rake type drying assembly for a plasma arc welding machine according to claim 3, characterized in that: The rotating disk (105) is provided with trapezoidal grooves at the upper and lower ends, the rotating disk (105) is provided with an inner concave plate (111) at the lower side, the upper side of the inner concave plate (111) is provided with a step groove, the upper end of the inner concave plate (111) is fixedly connected with a convex block (110), the trapezoidal groove is adapted to the convex block (110), and the lower side of the inner concave plate (111) passes through the turntable (4) and is slidably matched therewith.

5. The clamping device of a rake type drying assembly for a plasma arc welding machine according to claim 4, characterized in that: The lower end of the inner concave plate (111) is fixedly connected to a connecting rod (112), the lower end of the connecting rod (112) is fixedly connected to an abutment plate (113), one end of the abutment plate (113) is provided with an oblique chamfer, the upper end of the abutment plate (113) is provided with a pair of spring retractable rods (114), the upper ends of the spring retractable rods (114) are connected to the turntable (4); An annular groove (402) is provided at the upper end of the base (9), the abutment plate (113) extends into the annular groove (402) and moves along the annular groove (402), a pair of inner and outer arc strips (403) are fixedly connected in the annular groove (402), one end of the inner and outer arc strips (403) is provided with an oblique chamfer, the inner and outer arc strips (403) are adapted to the abutment plate (113), a gap is left between the inner and outer arc strips (403) and the turntable (4), and the inner and outer arc strips (403) extend from the conveyor belt (8) to the plasma arc welding machine (3).

6. The clamping device of a rake type drying assembly for a plasma arc welding machine according to claim 2, characterized in that: The support seat comprises a fixed seat (5) and a movable seat (501); the fixed seat (5) is fixedly connected to the turntable (4); the movable seat (501) and the turntable (4) are slidably matched; a plurality of spring telescopic columns (502) are arranged between the fixed seat (5) and the movable seat (501); a pair of concave clamping members (503) are fixedly connected to the upper end of the movable seat (501); the concave clamping members (503) are used to clamp the rake teeth (601); and the limit frame (901) limits the outer ends of the rake teeth (601).

7. The clamping device of a rake type drying assembly for a plasma arc welding machine according to claim 6, characterized in that: The plasma arc welding machine (3) further comprises a lifting plate (302), wherein the lifting plate (302) is used to drive the welding gun (301) to lift and lower, a plurality of guide telescopic rods are arranged at the upper end of the lifting plate (302), a support plate (303) is arranged at the upper end of the guide telescopic rod, one end of the lifting plate (302) is fixedly connected to an extension plate (304), the lower end of the support plate (303) is rotatably connected to a second screw rod (305), the second screw rod (305) passes through the extension plate (304) and is threadedly connected thereto, the lower end of the support plate (303) is fixedly connected to a base (306), a motor component is fixedly connected inside the base (306), and the motor component is used to drive the second screw rod (305).

8. The holding device of a rake type drying assembly for a plasma arc welding machine according to claim 7, characterized in that: One side of the screw rod 2 (305) is fixedly connected to a bevel gear 3 (307), one side of the bevel gear 3 (307) is meshingly connected to a bevel gear 4 (308), one end of the bevel gear 4 (308) is fixedly connected to a screw rod 3 (309), one side of the screw rod 3 (309) is threadedly connected to a threaded sleeve (310), the threaded sleeve (310) passes through the limit frame (901) and slidably cooperates with it, one end of the threaded sleeve (310) is fixedly connected to a push block (311), the push block (311) is used to push the movable seat (501), an adaption groove matched with the push block (311) is opened on the inner side of the limit frame (901), and a plurality of guide telescopic rods are arranged between the push block (311) and the adaption groove.

9. The method for operating the holding device of the rake type drying assembly for plasma arc welding machine according to claim 5, characterized in that The following steps are involved: S1. manually placing the rake tooth rod (6) to be welded on a support seat, with one end of the rake tooth rod (6) extending between a pair of concave clamping blocks (101); S2, by rotating a pair of screw rods (103), the nut tube (102) is driven to push the concave clamping block (101) to move along the guide frame (104), so that the pair of concave clamping blocks (101) clamp the rake tooth rod (6); S3, the turntable (4) then drives the clamped rake tooth rod (6) to rotate, so that the rake tooth rod (6) moves to dock with the conveyor belt (8), and the conveyor belt (8) transmits the rake teeth (601) to contact the docking end of the rake tooth rod (6), and then the rotating disk (105) drives the clamped rake tooth rod (6) to rotate until it engages with the rake teeth (601); S4, the turntable (4) then drives the rake tooth rod (6) and the rake teeth (601) that are engaged with each other to move to the lower side of the plasma arc welding machine (3), and drives the welding gun (301) to move through the horizontal displacement mechanism, so that the welding gun (301) welds and fixes the joint between the rake tooth rod (6) and the rake teeth (601); S5, the rotating disk (105) then drives the rake tooth rod (6) to rotate 180 degrees, and the welding gun (301) welds the turned rake tooth rod (6) and the rake teeth (601) again.

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