A clamping device for a rake-type drying assembly of a plasma arc welding machine and its working method

Abstract

The present invention relates to the technical field of welding equipment, and particularly relates to a clamping device and a working method thereof for a rake-type drying assembly of a plasma arc welding machine, which comprises a base, a conveyor belt, a clamping assembly, a support base and a turntable. The upper end of the base is fixedly connected with a limiting frame, and the turntable is rotatably connected in the limiting frame. The clamping assembly includes a pair of concave clamping blocks for clamping a rake tooth rod. The outer end of the concave clamping block is fixedly connected with a nut tube, and a first screw rod is in threaded connection with the inner side of the nut tube. Both ends of the concave clamping block are slidably matched with a guiding frame. The first screw rod is rotatably connected with one end of the guiding frame, and one end of the guiding frame is fixedly connected with a rotating disc. The concave clamping block is slidably matched with the rotating disc. The support base is arranged on the upper side of the turntable. In the present invention, the automatic clamping function is realized conveniently and efficiently.

Description

Technical Field

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

[0002] The drying principle of a rake dryer is that the object to be dried is added from the exact middle above the shell. Under the stirring of the rake teeth that rotate back and forth continuously, the material moves back and forth axially, the surface contacting the inner wall of the shell is continuously updated, and it is indirectly heated by steam. The uniform stirring of the rake teeth and the pulverization by the pulverizing rod enable the moisture on the surface of the material to be discharged more favorably. The vaporized moisture is discharged from the outlet of the vacuum pump through a dry dust collector, a wet dust collector, and a condenser. Therefore, the rake teeth are one of the essential important components in the drying process.

[0003] Nowadays, in the actual production and manufacturing process of the rake tooth component, usually, the rake teeth need to be first clamped into the card slot opened at the center of one end of the rake tooth rod, and a clamping tool is used to clamp the two to keep them stable. Then, a plasma arc welding machine is used to weld and fix the clamped part of the two. However, currently, the assembly and clamping of the rake teeth are both completed manually. After the staff docks the two, it is necessary to keep the docking state stable before clamping, and finally, it is welded by a plasma arc welding machine. The function of automatic clamping cannot be achieved, 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 component of a plasma arc welding machine and its working method, which can achieve the effect of automatic clamping. Summary of the Invention

[0005] The purpose of the present invention is to provide a clamping device for a rake-type drying component of a plasma arc welding machine and its working method to solve the problems raised in the above background art.

[0006] To solve the above technical problems, the present invention provides the following technical solution: A clamping device for a rake-type drying component of a plasma arc welding machine and its working method, including a base, a conveyor belt, a clamping component, a support base, and a turntable.

[0007] A limiting frame is fixedly connected to the upper end of the base, and the turntable is rotatably connected within the limiting frame;

[0008] At least one set of clamping components is provided. The clamping component includes a pair of concave clamping blocks for clamping the rake tooth rod. A nut tube is fixedly connected to the outer end of the concave clamping block. A first screw is threadedly connected to the inner side of the nut tube. The two ends of the concave clamping block are slidably fitted with a guiding frame. The first screw is rotatably connected to one end of the guiding frame. A rotating disk is fixedly connected to one end of the guiding frame, and the concave clamping block is slidably fitted with the rotating disk;

[0009] The support base is arranged on the upper side of the turntable. A groove adapted to the rake tooth rod is arranged on the upper side of the support base, and the support base is correspondingly arranged with the clamping component;

[0010] The conveyor belt is used to convey the rake teeth and contact the docking end of the rake tooth rod, and the rotating disk drives the rake tooth rod to rotate until it is engaged with the rake teeth.

[0011] In one embodiment, the plasma arc welding machine includes a welding gun and a horizontal displacement mechanism. The horizontal displacement mechanism drives the displacement of the welding gun, and the welding gun welds and fixes the connection 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. The center seat is rotatably connected to the rotating disk. A transmission groove and a conical groove are formed on one side of the rotating disk. A bevel gear one is fixedly connected to the outer end of the screw rod one. A bevel gear two is meshed and connected to one side of the bevel gear one. The bevel gear two is rotatably connected to the conical groove. A sprocket one is fixedly connected to one end of the bevel gear two. A motor assembly is arranged inside the center seat. A sprocket two is arranged at the driving end of the motor assembly. A chain drive connection is provided between a pair of sprockets one and the sprocket two.

[0013] In one embodiment, trapezoidal grooves are formed at the upper and lower ends of the rotating disk. An inner concave plate is arranged on the lower side of the rotating disk. A stepped groove is arranged 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. The lower side of the inner concave plate penetrates through the turntable and is in sliding fit with it.

[0014] In one embodiment, a connecting rod is fixedly connected to the lower end of the inner concave plate. A contact plate is fixedly connected to the lower end of the connecting rod. An inclined chamfer is formed at one end of the contact plate. A pair of spring contraction rods are arranged at the upper end of the contact plate. The upper ends of the spring contraction rods are connected to the turntable;

[0015] An annular groove is formed at the upper end of the base. The contact plate extends into the annular groove and moves along it. A pair of inner and outer arc-shaped strips are fixedly connected in the annular groove. An inclined chamfer is formed at one end of the inner and outer arc-shaped strips. The inner and outer arc-shaped strips are adapted to the contact plate. A gap is left between the inner and outer arc-shaped strips and the turntable. The inner and outer arc-shaped strips extend from the conveyor belt to the plasma arc welding machine.

[0016] In one embodiment, the support base includes a fixed seat and a movable seat. The fixed seat is fixedly connected to the turntable. The movable seat is in sliding fit with the turntable. A plurality of spring telescopic columns are arranged between the fixed seat and the movable seat. A pair of concave-shaped clamping parts are fixedly connected to the upper end of the movable seat. The concave-shaped clamping parts are used for clamping the rake teeth. The limiting frame limits the outer end of the rake teeth.

[0017] In one embodiment, the plasma arc welding machine further includes a lifting plate for driving the welding gun to lift. A plurality of guiding telescopic rods are provided at the upper end of the lifting plate, and a support plate is provided at the upper end of the guiding telescopic rods. One end of the lifting plate is fixedly connected with an extension plate. A second screw rod is rotatably connected to the lower end of the support plate. The second screw rod passes through the extension plate and is threadedly connected thereto. A base is fixedly connected to the lower end of the support plate, and a motor member is fixedly connected inside the base for driving the second screw rod.

[0018] In one embodiment, a third bevel gear is fixedly connected to one side of the second screw rod. A fourth bevel gear is meshed with one side of the third bevel gear. A third screw rod is fixedly connected to one end of the fourth bevel gear. A threaded sleeve is threadedly connected to one side of the third screw rod. The threaded sleeve passes through a limiting frame and is slidably engaged therewith. A pushing block is fixedly connected to one end of the threaded sleeve for pushing a movable seat. An adaptation groove adapted to the pushing block is provided inside the limiting frame. A plurality of guiding telescopic rods are provided between the pushing block and the adaptation groove.

[0019] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: In the present invention, by rotating a pair of first screw rods, the nut tube is driven to push the concave clamping blocks to displace along the guiding frame, so that the pair of concave clamping blocks clamp and fix the rake teeth rod, thereby improving the stability of subsequent docking assembly and welding; then the turntable drives the clamped rake teeth rod to rotate, so that the rake teeth rod moves to be docked with the conveyor belt. The conveyor belt transports the rakes to contact the docking end of the rake teeth rod. By rotating the turntable to drive the clamped rake teeth rod to rotate until the card slots are aligned with the rakes, under the transportation action of the conveyor belt, the rakes are engaged with the rake teeth rod to complete the assembly docking work; then the turntable drives the mutually engaged rake teeth rod and rakes to move to the lower side of the plasma arc welding machine. The welding gun is driven to displace by the horizontal displacement mechanism, so that the welding gun welds and fixes the connection between the rake teeth rod and the rakes. Then the turntable drives the rake teeth rod to rotate 180 degrees again, and the welding gun welds the turned-over rake teeth rod and rakes again, thus completing the work of assembly and welding, realizing the function of full welding, and having a high degree of automation;

[0020] Four clamping assemblies are provided to respectively correspond to the feeding station of the rake teeth rod, the feeding station of the rakes, the welding station and the discharging station, so that the four stations can operate simultaneously, greatly improving the working efficiency and realizing the functions of continuous assembly and welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The technical solutions and other beneficial effects of the present application will become obvious by describing the specific embodiments of the present application in detail with reference to the accompanying drawings.

[0022] In the drawings:

[0023] Figure 1is the overall structural schematic diagram of the present invention;

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

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

[0026] Figure 4 is the top-view sectional schematic diagram of the clamping component of the present invention;

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

[0028] Figure 6 is Figure 2 the partial enlarged schematic diagram of area A of;

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

[0030] Figure 8 is Figure 1 the partial enlarged schematic diagram of area B of;

[0031] <~ Figure 9 is Figure 2 the partial enlarged schematic diagram of area C of;

[0032] In the figure: 1. Clamping component; 101. Concave clamping block; 102. Nut tube; 103. First screw; 104. Guide frame; 105. Rotating disk; 106. First bevel gear; 107. Second bevel gear; 108. First sprocket; 109. Second sprocket; 110. Convex block; 111. Concave plate; 112. Connecting rod; 113. Abuttment plate; 114. Spring contraction rod;

[0033] 3. Plasma arc welding machine; 301. Welding gun; 302. Lifting plate; 303. Support plate; 304. Extension plate; 305. Second screw; 306. Base; 307. Third bevel gear; 308. Fourth bevel gear; 309. Third screw; 310. Threaded sleeve; 311. Pushing block;

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

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

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

[0037] 8. Conveyor belt;

[0038] 9. Base; 901. Limit frame. Detailed implementation manners

[0039] The following disclosure provides many different implementation manners or examples for implementing different structures of the present application. To simplify the disclosure of the present application, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between various implementation manners and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can realize the application of other processes and / or the use of other materials.

[0040] Please refer to Figure 1-9 , the present invention provides a technical solution: a clamping device for a rake-type drying component of a plasma arc welding machine and its working method, which includes a base 9, a conveyor belt 8, a clamping component 1, a plasma arc welding machine 3, a support base and a turntable 4,

[0041] A limiting frame 901 is fixedly connected to the upper end of the base 9, and the turntable 4 is rotatably connected within the limiting frame 901;

[0042] At least one set of clamping components 1 is provided. The clamping component 1 includes a pair of concave clamping blocks 101 for clamping the rake tooth rod 6. A nut tube 102 is fixedly connected to the outer end of the concave clamping block 101. A first screw rod 103 is threadedly connected to the inner side of the nut tube 102. Both ends of the concave clamping block 101 are slidably mated with a guiding frame 104. The first screw rod 103 is rotatably connected to one end of the guiding frame 104. A rotating disk 105 is fixedly connected to one end of the guiding frame 104. The concave clamping block 101 is slidably mated with the rotating disk 105;

[0043] The support base is arranged on the upper side of the turntable 4. A groove adapted to the rake tooth rod 6 is arranged on the upper side of the support base. The support base and the clamping component 1 are arranged correspondingly;

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

[0045] First, manually place the rake tooth rod 6 to be welded on the support base, and extend one end of the rake tooth rod 6 between a pair of concave clamping blocks 101. Then, rotate a pair of first screws 103 to drive the nut tube 102 to push the concave clamping blocks 101 to displace along the guiding frame 104, so that the pair of concave clamping blocks 101 clamp and fix the rake tooth rod 6, 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 be docked with the conveyor belt 8. The conveyor belt 8 automatically transports and feeds a number of rake teeth 601. Specifically, the conveyor belt 8 transports the rake teeth 601 to contact the docking end of the rake tooth rod 6. However, at this time, it is impossible to determine whether the card slot of the rake tooth rod 6 is aligned with the rake tooth 601. Therefore, the turntable 105 drives the clamped rake tooth rod 6 to rotate until the card slot is aligned with the rake tooth 601. Under the transportation of the conveyor belt 8, the rake tooth 601 is engaged with the rake tooth rod 6 to complete the assembly docking work. Then, the turntable 4 can drive the mutually engaged rake tooth rod 6 and rake tooth 601 to move to the welding station. At this time, the rake tooth 601 is restricted to displace within the limit frame 901, thereby ensuring the stability of the docking between the rake tooth rod 6 and the rake tooth 601, realizing the functions of automatic assembly and clamping, without manual operation for assembly and clamping, with high 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 displace, and the welding gun 301 welds and fixes the joint of the rake tooth rod 6 and the rake tooth 601.

[0047] The clamped rake tooth rod 6 and rake tooth 601 are displaced to the lower side of the plasma arc welding machine 3. The horizontal displacement mechanism drives the welding gun 301 to displace. The horizontal displacement mechanism includes but is not limited to driving by a motor screw or a cylinder, etc., so that the welding gun 301 welds and fixes the joint of the rake tooth rod 6 and the rake tooth 601. Then, the turntable 105 drives the rake tooth rod 6 to rotate 180 degrees again, and the welding gun 301 welds the rake tooth rod 6 and the rake tooth 601 after turning over again, thus completing the work of assembly clamping and welding, realizing the function of automatic assembly and clamping and fixing, with high automation degree. Then, the concave clamping blocks 101 can loosen the welded rake tooth assembly. Then, the turntable 4 rotates it to the next station for the staff to take it off. Then, the next rake tooth rod 6 to be processed can be placed for processing;

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

[0049] A center seat 401 is fixedly connected to the middle side of the turntable 4. The center seat 401 is rotatably connected to the rotating disk 105. A transmission groove and a tapered groove are formed on one side of the rotating disk 105. The outer end of the first screw 103 is fixedly connected to a first bevel gear 106. A second bevel gear 107 is meshed and connected to one side of the first bevel gear 106. The second bevel gear 107 is rotatably connected to the tapered groove. One end of the second bevel gear 107 is fixedly connected to a first sprocket 108. A motor assembly is arranged inside the center seat 401. A second sprocket 109 is arranged at the driving end of the motor assembly. A chain drive connection is provided between the pair of first sprockets 108 and the second sprocket 109.

[0050] Preferably, when it is necessary to drive the concave clamping block 101 to clamp, the motor assembly is used to drive the second sprocket 109 to rotate. Through the chain drive, the two first sprockets 108 are simultaneously driven to rotate. The first sprocket 108 drives the second bevel gear 107. The second bevel gear 107 meshes with the first bevel gear 106, so as to drive the first screw 103 to rotate, and then drive the concave clamping block 101 to move to clamp the rake tooth rod 6.

[0051] Trapezoidal grooves are formed at the upper and lower ends of the rotating disk 105. An inner concave plate 111 is arranged on the lower side of the rotating disk 105. A stepped groove is arranged 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. The lower side of the inner concave plate 111 penetrates through the turntable 4 and is in sliding fit with it.

[0052] Preferably, a concave plate 111 is provided on the lower side of the rotating disk 105. The concave plate 111 is in contact with the rotating disk 105 in the initial state, so that the convex block 110 is clamped into 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. Then, the turntable 4 drives the rake tooth rod 6 to move to the conveyor belt 8. At this time, it is necessary to drive the rake tooth rod 6 to rotate along its axis to align the position engaged with the rake teeth 601. It is necessary to drive the concave plate 111 to descend so that the convex block 110 moves away from the trapezoidal groove, and the rotating disk 105 can rotate. Specifically, since the concave clamping block 101 has clamped the rake tooth rod 6, that is, the concave clamping block 101 cannot move further, so that the nut tube 102, the first bevel gear 106, the second bevel gear 107, the first sprocket 108 and the second sprocket 109 cannot rotate relative to the rotating disk 105 anymore. That is to say, at this time, a whole is formed between the second sprocket 109 and the rotating disk 105, and the two are in a fixed state. At this time, if the motor assembly continues to apply a rotational driving force to the second sprocket 109, this driving force will be directly applied to the rotatable rotating disk 105, and then directly drive the entire rotating disk 105 and all the structures connected thereto to rotate, so as to drive the rake tooth rod 6 to rotate self - centering. Compared with the prior art, in which the rake tooth rod 6 is clamped by a clamping plate driven by a motor or a cylinder first, and then an additional motor is used to drive its rotation, and further additional programming control is required, that is, the corresponding control system is used to control the connection between the clamping process and the rotation process. In this application, only a single motor assembly is used to drive the rotation action. After driving the concave clamping block 101 to clamp, the clamped rake tooth rod 6 can be directly rotated self - centering to align the position engaged with the rake teeth 601. The automation degree is high and the cost is further saved.

[0053] A connecting rod 112 is fixedly connected to the lower end of the concave plate 111. A contact plate 113 is fixedly connected to the lower end of the connecting rod 112. An inclined chamfer is provided at one end of the contact plate 113. A pair of spring contraction rods 114 are provided at the upper end of the contact plate 113, and the upper ends of the spring contraction rods 114 are connected to the turntable 4.

[0054] An annular groove 402 is provided at the upper end of the base 9. The contact plate 113 extends into the annular groove 402 and moves along it. A pair of inner and outer arc - shaped strips 403 are fixedly connected in the annular groove 402. An inclined chamfer is provided at one end of the inner and outer arc - shaped strips 403. The inner and outer arc - shaped strips 403 are adapted to the contact plate 113. There is a gap between the inner and outer arc - shaped strips 403 and the turntable 4. The inner and outer arc - shaped strips 403 extend from the conveyor belt 8 to the plasma arc welder 3.

[0055] Preferably, when it is necessary to drive the concave plate 111 to descend, there are a contact plate 113 and inner and outer arc-shaped strips 403. Specifically, chamfered bevels are provided at one ends of both the contact plate 113 and the inner and outer arc-shaped strips 403 and are adapted to each other. When the turntable 4 drives the rake tooth rod 6 to rotate, the contact plate 113 is synchronously driven to move within the annular groove 402, and the position of the inner and outer arc-shaped strips 403 remains fixed. Due to the provision of the spring contraction rod 114, the upper end of the contact plate 113 contacts the turntable 4. When the contact plate 113 contacts the inner and outer arc-shaped strips 403, their chamfered bevels contact each other, and the contact plate 113 is displaced downward along its chamfered bevel, thereby driving the concave plate 111 to descend;

[0056] Preferably, the length of the inner and outer arc-shaped strips 403 is set to extend from the conveyor belt 8 to the plasma arc welding machine 3, so that when the contact plate 113 enters the range of the conveyor belt 8 and the plasma arc welding machine 3, it automatically descends, enabling the motor assembly to drive the rotating disk 105 to rotate, realizing the function of aligning and engaging positions, and further realizing the function of the rake teeth 601 flipping 180 degrees for welding;

[0057] When the contact plate 113 moves away from the inner and outer arc-shaped strips 403, under the reset action of the spring contraction rod 114, the contact plate 113 and the 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-enter the trapezoidal groove. Therefore, when it is necessary to release the rake tooth rod 6, the motor assembly drives the second sprocket wheel 109 to reverse, thereby driving the rotating disk 105 to reverse until the trapezoidal groove is re-engaged with the convex block 110, and then the rotating disk 105 can be fixed again. At this time, when the second sprocket wheel 109 reverses, it can drive the concave clamping block 101 to reset and release the welded rake tooth rod 6.

[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, and the movable seat 501 is slidably mated with the turntable 4. A plurality of spring telescopic columns 502 are provided 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, and the concave clamping members 503 are used for clamping the rake teeth 601, and the limiting 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-shaped clamping member 503 on the movable seat 501 is docked with the conveyor belt 8, the rake teeth 601 move into the concave-shaped clamping member 503, and then the rake tooth rod 6 rotates self, until the two are clamped, so that the rake teeth 601 completely enter the concave-shaped clamping member 503. Then the turntable 4 rotates, driving the rake teeth 601 to rotate. The rake teeth 601 are restricted within the limit frame 901 and thus move to the lower side of the plasma arc welding machine 3. At this time, due to the restriction of the concave-shaped clamping member 503, the rake teeth 601 and the rake tooth rod 6 are kept stable, and welding fixation can be carried out, ensuring strong stability of the welding work. Then, the movable seat 501 is displaced towards the fixed seat 5 until the concave-shaped clamping member 503 disengages from the rake teeth 601. At this time, the turntable 105 can drive the rake teeth 601 to rotate 180 degrees. Then the movable seat 501 can be reset to re-limit the rake teeth 601, and then the welding work can continue, thus completing the welding work on both sides of the rake teeth 601 and ensuring the welding position accuracy.

[0060] The plasma arc welding machine 3 further includes a lifting plate 302, which is used to drive the welding gun 301 to lift. A number of guiding telescopic rods are provided at the upper end of the lifting plate 302, and a support plate 303 is provided at the upper end of the guiding telescopic rods. One end of the lifting plate 302 is fixedly connected with an extension plate 304. A second screw rod 305 is rotatably connected to the lower end of the support plate 303. The second screw rod 305 passes through the extension plate 304 and is threadedly connected thereto. A base 306 is fixedly connected to the lower end of the support plate 303, and a motor member is fixedly connected inside the base 306, which is used to drive the second screw rod 305.

[0061] Preferably, when the front side of the rake teeth 601 is welded and needs to be flipped, the motor member drives the second screw rod 305 to rotate. By being threadedly connected with the extension plate 304 and under the guiding action of a number of guiding telescopic rods, the extension plate 304 and the lifting plate 302 are driven to rise, so as to leave space for the rake teeth 601 to be flipped. After flipping, then the lifting plate 302 is reset and lowered, so that the welding gun 301 is aligned with the welding place again for welding, with strong practicability.

[0062] A third bevel gear 307 is fixedly connected to one side of the second screw rod 305. A fourth bevel gear 308 is meshed and connected to one side of the third bevel gear 307. A third screw rod 309 is fixedly connected to one end of the fourth bevel gear 308. A threaded sleeve 310 is threadedly connected to one side of the third screw rod 309. The threaded sleeve 310 passes through the limit frame 901 and is slidably mated with it. A push block 311 is fixedly connected to one end of the threaded sleeve 310, and the push block 311 is used to push the movable seat 501. An adaptation groove adapted to the push block 311 is provided inside the limit frame 901, and a number of guiding telescopic rods are provided between the push block 311 and the adaptation groove.

[0063] Preferably, when the second screw 305 rotates forward, while driving the lifting plate 302 to rise, it also drives the third bevel gear 307 to rotate forward. The third bevel gear 307 drives the fourth bevel gear 308 and the third screw 309 to rotate. Under the guiding action of the guiding telescopic rod, it drives the threaded sleeve 310 to move, pushes the push block 311 to move, and pushes the movable seat 501, so that the movable seat 501 and the concave-shaped clamping member 503 move away from the rake teeth 601. Then, the rake teeth 601 can be driven to turn over. Then, the second screw 305 rotates reversely, driving the lifting plate 302 to descend, and the push block 311 resets. Under the reset action of the spring telescopic column 502, the movable seat 501 can be reset, and the concave-shaped clamping member 503 re-limits the rake teeth 601, so that the welding gun 301 can align and weld the turned-over rake teeth 601. The synchronization between the two is good, the degree of automation is high, and the cost is saved.

[0064] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" 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 a connection that can communicate with each other; it can be directly connected, or the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the meanings of the above terms in the present application can be understood according to specific situations.

[0065] The clamping device and its working method of a rake-type drying component for a plasma arc welding machine provided by the embodiments of the present application have been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions 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 base, and a turntable (4), characterized in that: The upper end of the base (9) is fixedly connected to a limit frame (901), and the turntable (4) is rotatably connected in the limit frame (901); The clamping assembly (1) includes 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 the nut tube (102), the inner side of the nut tube (102) is threadedly connected to the screw rod (103), the two ends of the concave clamping blocks (101) are slidably matched with the guide frame (104), 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 to the 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), and a groove adapted to the rake tooth rod (6) is provided on the upper side of the support seat. The support seat is arranged corresponding to the clamping assembly (1); The conveyor belt (8) is used to transport the rake teeth (601) and contacts the butt end of the rake tooth rod (6), and the rotating disk (105) drives the rake tooth rod (6) to rotate until it engages with the rake teeth (601).

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

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

4. The holding device for a rake-type drying assembly for a plasma arc welding machine according to claim 3, characterized in that: 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 is slidably engaged therewith.

5. The holding device for 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 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); 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 holding device for 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), wherein the fixed seat (5) is fixedly connected to the turntable (4), and the movable seat (501) is slidably matched with the turntable (4). A plurality of spring telescopic columns (502) are provided between the fixed seat (5) and the movable seat (501), and a pair of concave clamping members (503) are fixedly connected to the upper end of the movable seat (501), wherein the concave clamping members (503) are used for clamping the rake teeth (601), and the limiting frame (901) limits the outer ends of the rake teeth (601).

7. The holding device for 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), the lifting plate (302) being used for driving the welding gun (301) to lift and lower, a plurality of guide telescopic rods being provided at the upper end of the lifting plate (302), a support plate (303) being provided at the upper end of the guide telescopic rods, one end of the lifting plate (302) being fixedly connected to an extension plate (304), the lower end of the support plate (303) being rotatably connected to a second screw rod (305), the second screw rod (305) passing through the extension plate (304) and being threadedly connected thereto, the lower end of the support plate (303) being fixedly connected to a base (306), the interior of the base (306) being fixedly connected to a motor component, the motor component being used for driving the second screw rod (305).

8. The holding device for 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 the bevel gear 3 (307), one side of the bevel gear 3 (307) is meshedly connected to the bevel gear 4 (308), one end of the bevel gear 4 (308) is fixedly connected to the screw rod 3 (309), one side of the screw rod 3 (309) is threadedly connected to the 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 to a push block (311), the push block (311) is used to push the movable seat (501), an adaptation groove adapted to the push block (311) is provided on the inner side of the limit frame (901), and a plurality of guide telescopic rods are provided between the push block (311) and the adaptation 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, 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) 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 of the rake tooth rod (6) and the rake teeth (601); S5, then the rotating disk (105) drives the rake tooth rod (6) to rotate 180 degrees, and the welding gun (301) welds the rake tooth rod (6) and the rake teeth (601) after turning over again.

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