A device and method for continuous welding of thermocouple nickel heads

Abstract

The application discloses a device and method for continuous welding of thermocouple nickel heads, wherein the device comprises a power mechanism; a rotating disc is arranged at the upper end of the power mechanism; the rotating disc is connected with the output end of the power mechanism, and a plurality of through holes are formed in the rotating disc and used for rotating under the driving of the power mechanism to switch welding stations; a plurality of workpiece positioning assemblies are used for positioning copper sleeves and thermocouple nickel heads; a jacking mechanism is arranged below the rotating disc and used for jacking the positioned workpieces in the workpiece positioning assemblies upward; and a welding device is suspended above the rotating disc and used for welding the workpieces jacked by the jacking mechanism. The application shortens the waiting time between adjacent two weldings, improves the welding efficiency of the thermocouple nickel heads, improves the protection of the welding positions in the workpiece taking process, improves the yield of the welding finished products, and improves the smoothness and reliability of the switching between the multiple stations.

Description

Technical Field

[0001] This invention relates to the field of thermocouple welding technology, and more specifically to an apparatus and method for continuous welding of thermocouple nickel tips. Background Technology

[0002] A thermocouple is a commonly used temperature measuring element. Its working end consists of a copper sleeve and a nickel tip welded together. The welding quality directly affects the temperature measurement accuracy and service life of the thermocouple. The welding of the thermocouple nickel tip refers to the process of connecting the copper sleeve and the nickel tip together by induction heating. In the existing technology, the welding of thermocouple nickel tips usually adopts a single-station fixed operation method. The operator first aligns the copper sleeve and the nickel tip and places them on a fixed fixture at the welding station for positioning. Then, the high-frequency induction heating equipment is started. The high-frequency induction coil induction heats the connection between the copper sleeve and the nickel tip, welding them together. After welding, the operator removes the workpiece from the fixture and places it in a cooling tank to cool. After cooling, the next copper sleeve and nickel tip to be welded is clamped onto the fixture, and the above operation is repeated. This process of single-piece welding is repeated. The above-mentioned single-station manual operation method has the following drawbacks: First, only one workpiece can be welded at a time. After welding, it is necessary to wait for the operator to remove the workpiece, allow it to cool, and re-clamp and load it before the next welding can be carried out. The waiting time between two adjacent welding operations is long, the welding efficiency is low, and it is impossible to achieve continuous welding of thermocouple nickel heads. Second, after welding, the operator manually removes the workpiece from the fixture. The temperature of the nickel head part that has just been welded is high, and the operator's hands or the tool used to remove the workpiece may come into contact with the welded part, causing damage to the weld and affecting the welding quality. Third, when using fixed welding equipment, the workpiece needs to pass by the side of the welding equipment during clamping, loading, and station switching. The workpiece may easily cause structural interference with the welding equipment, making it impossible to achieve smooth switching between multiple stations.

[0003] Therefore, those skilled in the art are dedicated to providing an apparatus and method for continuous welding of thermocouple nickel heads that can effectively solve the above-mentioned technical problems. Summary of the Invention

[0004] According to a first aspect of the embodiments of this specification, an apparatus and method for continuous welding of thermocouple nickel heads are provided, including a power mechanism for providing a rotational driving force to drive a rotating disk to rotate;

[0005] A rotary disk is disposed at the upper end of the power mechanism and connected to the output end of the power mechanism. The rotary disk has several through holes for rotating under the drive of the power mechanism to switch welding positions.

[0006] Several workpiece positioning components are disposed on the upper end of the rotary disk, and each workpiece positioning component is disposed at one of the through holes for positioning the copper sleeve and the thermocouple nickel head.

[0007] A lifting mechanism is provided below the rotating disk. The output end of the lifting mechanism can extend upward through the through hole and is used to lift the workpiece positioned in the workpiece positioning assembly upward.

[0008] The welding equipment is suspended above the rotary table and is used to weld workpieces that are lifted by the lifting mechanism.

[0009] In one possible implementation, the power mechanism includes a housing with an openable and closable door. A drive motor is housed inside the housing, and the output end of the drive motor rotatably extends upward out of the housing. The output end of the drive motor is connected to a drive gear. A driven gear is rotatably mounted on the upper end of the housing, meshing with the drive gear. The driven gear is sleeved on an output shaft, the lower end of which is rotatably connected to the housing, and the upper end of which is connected to the rotating disk to drive the rotating disk to rotate.

[0010] In one possible implementation, a plurality of the through holes are arranged in a circular array around the center line of the rotating disk, and there are nine through holes and nine workpiece positioning components, with each through hole and each workpiece positioning component corresponding to one another.

[0011] In one possible implementation, the workpiece positioning assembly includes a disc detachably disposed on the upper end of the rotating disk. The disc has a through hole, the center line of which coincides with the center line of the corresponding through hole. A limiting cylinder is disposed on the disc, the through hole being located within the limiting cylinder. A guide limiting rod is disposed around the periphery of the limiting cylinder, the lower end of which is connected to the disc. A downward-opening limiting cover is disposed outside the limiting cylinder, the inner wall of which fits against the outer wall of the limiting cylinder. A guide groove is formed at the lower end of the limiting cover, and the guide limiting rod is inserted into the guide groove to restrict the limiting cover to move only up and down.

[0012] In one possible implementation, the upper end of the limiting cover has a limiting hole for fixing the copper sleeve. The limiting hole has an upward-opening positioning cavity. The upper end of the positioning cavity is connected to the upper inner wall of the limiting hole. The lower end of the positioning cavity has a positioning hole. The center line of the positioning hole coincides with the center line of the through hole.

[0013] In one possible implementation, the lifting mechanism includes a base frame on which a mounting plate and a positioning plate are mounted. The upper ends of the mounting plate and the positioning plate are connected by a top plate. A drive cylinder is mounted on the outer side of the mounting plate. The output end of the drive cylinder is connected to a top block. The upper end of the top block has an inclined surface. Two guide rods are mounted on the end of the top block away from the drive cylinder. The two guide rods are movably inserted through the positioning plate. A top rod is slidably inserted through the top plate. The lower end of the top rod is connected to a connector. The lower end of the connector is equipped with a roller. The roller cooperates with the inclined surface. When the drive cylinder drives the top block to move towards the positioning plate, the upper end of the inclined surface moves towards the positioning plate. The roller lifts the connector and the top rod upward, so that the upper end of the top rod passes through the through hole.

[0014] In one possible implementation, a weight-reducing hole is provided in the middle of the top block, and a return spring is sleeved on the top rod. The return spring is located between the top plate and the base frame and is used to return the top rod downward when the drive cylinder retracts.

[0015] In one possible implementation, the welding equipment includes a high-frequency oscillation chamber with a high-frequency induction coil connected to it. The high-frequency induction coil is suspended above the rotating disk. When the lifting mechanism lifts the workpiece upward, the welding part of the workpiece moves to the position of the high-frequency induction coil for welding.

[0016] In one possible implementation, a feeding mechanism is also included, which is disposed on one side of the rotary table;

[0017] The unloading mechanism includes a housing with a door. A motor is housed inside the housing, and its output extends out of the housing and connects to a rotating table. A lifting cylinder is mounted on the rotating table, and its output is connected to a lifting arm. The lifting arm is connected to a gripping assembly via a connecting key, and a reinforcing block is provided at the angle between the connecting key and the lifting arm. The gripping assembly includes a lifting cylinder connected to the connecting key via a first connecting frame. A positioning plate is connected to the output of the lifting cylinder, and a fixed plate is located below the positioning plate. The fixed plate is connected to the positioning plate via a second connecting frame. The positioning disk is connected by a key. The lower end of the positioning disk has several movable rods, and the fixed disk has several circular holes. Each movable rod passes through one of the circular holes and extends downwards. The lower end of each movable rod is hinged to the inner side of the clamping arm via a hinge. The outer side of the clamping arm is connected to a fixed seat via a fixing member. The fixed seat is located at the lower end of the fixed disk. The lower end of the clamping arm has clamping fingers. When the lifting cylinder pushes the positioning disk downwards, the clamping fingers open outwards. When the lifting cylinder pulls the positioning disk upwards, the clamping fingers close inwards to clamp the copper sleeve.

[0018] According to a second aspect of the embodiments of this specification, a method of using an apparatus for continuous welding of thermocouple nickel tips is provided, comprising the following steps:

[0019] S1: After connecting the copper sleeve with the thermocouple nickel head, insert it into the workpiece positioning assembly for positioning;

[0020] S2: Drive the rotary table to rotate via the power mechanism, and rotate the workstation with the workpiece positioned to the bottom of the welding equipment;

[0021] S3: The workpiece positioned in the workpiece positioning assembly is lifted upward by the lifting mechanism, so that the welding part of the workpiece is moved to the welding equipment.

[0022] S4: Weld the workpiece at the welding part using the welding equipment;

[0023] S5: After welding is completed, the lifting mechanism retracts, and the workpiece descends with the workpiece positioning assembly;

[0024] S6: Drive the rotary disk to rotate via the power mechanism, rotate the welded workpiece to the unloading mechanism, and clamp and remove the welded workpiece through the gripping component of the unloading mechanism.

[0025] As described above, the present invention provides an apparatus and method for continuous welding of thermocouple nickel tips, which has the following beneficial effects:

[0026] 1. By setting up a rotary table and several workpiece positioning components, the power mechanism drives the rotary table to rotate to switch welding stations. Multiple workpiece positioning components can load multiple sets of workpieces at the same time. While the workpieces at the welding station are being welded, other stations can simultaneously perform loading or unloading operations, thereby shortening the waiting time between two adjacent welding operations, improving the welding efficiency of thermocouple nickel heads, and enabling continuous welding operations of thermocouple nickel heads.

[0027] 2. By setting up a feeding mechanism and a gripping component, the gripping fingers of the gripping component only grip the copper sleeve and do not contact the thermocouple nickel head, which improves the protection of the welding parts during the part removal process and increases the yield of the welded products.

[0028] 3. By suspending the welding equipment above the rotary table, and ensuring that the upper end of the workpiece is below the high-frequency induction coil when the lifting mechanism does not lift the workpiece upward, sufficient space is left between the workpiece and the welding equipment when the rotary table rotates to switch positions, thus improving the smoothness and reliability of switching between multiple positions. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of a device for continuous welding of thermocouple nickel tips provided in one embodiment of this specification;

[0030] Figure 2 for Figure 1 A magnified view of the structure at point A in the middle;

[0031] Figure 3 This is a three-dimensional structural schematic diagram of a power mechanism provided in one embodiment of this specification;

[0032] Figure 4 for Figure 3 A magnified schematic diagram of the structure at point B in the middle;

[0033] Figure 5 This is a top view of a rotating disk equipped with multiple workpiece positioning components according to one embodiment of this specification.

[0034] Figure 6 This is a three-dimensional structural diagram of a rotating disk with a through hole provided in one embodiment of this specification;

[0035] Figure 7 This is a three-dimensional schematic diagram of the assembly of the workpiece positioning assembly positioning copper sleeve and the thermocouple nickel head provided in one embodiment of this specification;

[0036] Figure 8 This is a three-dimensional structural diagram of a limiting cover with a limiting hole provided in one embodiment of this specification;

[0037] Figure 9This is a three-dimensional structural diagram of a disk with a through hole provided in one embodiment of this specification;

[0038] Figure 10 This is a three-dimensional structural diagram of a disc assembly limiting cylinder and a guide limiting rod provided in one embodiment of this specification;

[0039] Figure 11 This is a cross-sectional schematic diagram of the internal structure of the limiting cover provided in one embodiment of this specification;

[0040] Figure 12 This is a schematic diagram of the overall assembly structure of the lifting mechanism provided in one embodiment of this specification;

[0041] Figure 13 This is a three-dimensional structural diagram of the top block and guide rod in a lifting mechanism provided in one embodiment of this specification;

[0042] Figure 14 This is a schematic diagram of the assembly structure of the feeding mechanism and the gripping component provided in one embodiment of this specification;

[0043] Figure 15 This is a schematic diagram of the overall structure of the grabbing component provided in one embodiment of this specification;

[0044] Figure 16 This is a schematic diagram of the working structure of the fixed disk, movable rod, and clamping arm in a gripping assembly provided in one embodiment of this specification.

[0045] Figure 17 This is a flowchart illustrating a method for continuous welding of thermocouple nickel tips, provided in one embodiment of this specification.

[0046] The attached diagram lists the components represented by each number as follows:

[0047] 100. Power mechanism; 101. Housing; 102. Door; 105. Drive gear; 106. Driven gear; 107. Output shaft; 200. Rotary disk; 201. Through hole; 300. Workpiece positioning assembly; 301. Disc; 302. Through hole; 303. Limiting cylinder; 305. Guide limiting rod; 306. Limiting cover; 307. Guide groove; 308. Limiting hole; 309. Positioning cavity; 310. Positioning hole; 500. Lifting mechanism; 501. Base frame; 502. Mounting plate; 503. Positioning plate; 505. Top plate; 506. Drive cylinder; 507. Top block; 508. Weight reduction hole; 509. Inclined surface; 510. Guide rod; 511. Top rod; 512. 513. Return spring; 514. Connector; 515. Roller; 600. Welding equipment; 601. High-frequency induction coil; 602. High-frequency oscillation box; 700. Feeding mechanism; 701. Chassis; 702. Box door; 703. Rotary table; 705. Lifting arm; 706. Connecting key; 707. Reinforcing block; 800. Gripping assembly; 801. Positioning plate; 802. Lifting cylinder; 803. First connecting frame; 805. Movable rod; 806. Round hole; 807. Fixed plate; 808. Second connecting frame; 809. Hinge; 810. Clamping arm; 812. Fixing component; 813. Fixed base; 816. Clamping finger; 1000. Copper sleeve; 2000. Thermocouple nickel head; Detailed Implementation

[0048] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0049] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0051] This specification provides an apparatus for continuous welding of thermocouple nickel tips, and also relates to a method for continuous welding of thermocouple nickel tips, which will be described in detail in the following embodiments.

[0052] See Figure 1 This embodiment provides an apparatus for continuous welding of thermocouple nickel tips. The apparatus includes a power mechanism 100, a rotating disk 200, several workpiece positioning assemblies 300, a lifting mechanism 500, and welding equipment 600. The power mechanism 100 provides rotational driving force to drive the rotating disk 200 to rotate. The rotating disk 200 is located at the upper end of the power mechanism 100 and connected to its output end. The rotating disk 200 has several through holes 201. Driven by the power mechanism 100, the rotating disk 200 rotates to switch welding tools. A number of workpiece positioning components 300 are arranged on the upper end of the rotary disk 200. Each workpiece positioning component 300 is correspondingly arranged at a through hole 201 for positioning the copper sleeve 1000 and the thermocouple nickel head 2000. The lifting mechanism 500 is arranged below the rotary disk 200. The output end of the lifting mechanism 500 can extend upward through the through hole 201 for lifting the workpiece positioned in the workpiece positioning component 300 upward. The welding equipment 600 is suspended above the rotary disk 200 for welding the workpiece lifted by the lifting mechanism 500.

[0053] See Figure 3 and Figure 4 The power mechanism 100 includes a housing 101 with an openable and closable door 102. A drive motor is installed inside the housing 101, and the output end of the drive motor extends rotatably upward out of the housing 101. The output end of the drive motor is connected to a drive gear 105. A driven gear 106 is rotatably mounted on the upper end of the housing 101. The driven gear 106 meshes with the drive gear 105 and is sleeved on an output shaft 107. The lower end of the output shaft 107 is rotatably connected to the housing 101, and the upper end of the output shaft 107 is connected to a rotating disk 200 to drive the rotating disk 200 to rotate. When the drive motor is running, its output end drives the drive gear 105 to rotate, which in turn drives the driven gear 106 to rotate. The driven gear 106 drives the output shaft 107 to rotate, which in turn drives the rotating disk 200 to rotate, thereby achieving the switching of work positions.

[0054] See Figure 5 and Figure 6A number of through holes 201 are arranged in a circular array around the center line of the rotating disk 200. There are nine through holes 201 and nine workpiece positioning components 300. Each through hole 201 and each workpiece positioning component 300 are arranged in a one-to-one correspondence. Each through hole 201 penetrates the rotating disk 200, and each through hole 201 is provided with a workpiece positioning component 300.

[0055] See Figure 5 , Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11 The workpiece positioning assembly 300 includes a disc 301, which is detachably mounted on the upper end of the rotating disc 200. A through hole 302 is provided on the disc 301, and the center line of the through hole 302 coincides with that of the corresponding through hole 201. A limiting cylinder 303 is provided on the disc 301, and the through hole 302 is located inside the limiting cylinder 303. A guide limiting rod 305 is provided on the periphery of the limiting cylinder 303, and the lower end of the guide limiting rod 305 is connected to the disc 301. A limiting cover 306 with an opening facing downward is provided on the outer sleeve of the limiting cylinder 303. The inner wall of the limiting cover 306 is in contact with the outer wall of the limiting cylinder 303. A guide groove 307 is provided at the lower end of the limiting cover 306, and the guide limiting rod 305 is inserted into the guide groove 307. Because the guide limiting rod 305 is inserted into the guide groove 307, the limiting cover 306 will not rotate when moving up and down, but can only move up and down.

[0056] See Figure 7 , Figure 8 and Figure 11 The upper end of the limiting cover 306 has a limiting hole 308, which is used to fix the copper sleeve 1000. In use, the copper sleeve 1000 and the thermocouple nickel head 2000 are fastened together manually, and then the copper sleeve 1000 is inserted into the limiting hole 308 to position the copper sleeve 1000. The limiting hole 308 is provided with a positioning cavity 309 with an upward opening. The upper end of the positioning cavity 309 is connected to the upper inner wall of the limiting hole 308. The lower end of the positioning cavity 309 is provided with a positioning hole 310. The center line of the positioning hole 310 coincides with the center line of the through hole 302 and the through hole 201. When the copper sleeve 1000 is fixed through the limiting hole 308, the lower half of the copper sleeve 1000 is located in the positioning cavity 309.

[0057] See Figure 12 and Figure 13The lifting mechanism 500 includes a base frame 501, with positioning holes at each of the four corners. A mounting plate 502 and a positioning plate 503 are mounted on the base frame 501. The upper ends of the mounting plate 502 and the positioning plate 503 are connected via a top plate 505. A drive cylinder 506, either pneumatic or electric, is located on the outer side of the mounting plate 502. The output end of the drive cylinder 506 is connected to a top block 507. The upper end of the top block 507 has an inclined surface 509, and a weight-reducing hole 508 is provided in the middle of the top block 507. Two guide rods 510 are provided at the end of the top block 507 away from the drive cylinder 506. The two guide rods 510 are movably inserted into the positioning plate 503. A top rod 511 is slidably inserted into the top plate 505. A return spring 512 is sleeved on the top rod 511, located between the top plate 505 and the base frame 501. The lower end is connected to a connector 513, and the lower end of the connector 513 is provided with a roller 515. The roller 515 cooperates with the inclined surface 509. When the drive cylinder 506 drives the top block 507 to move towards the positioning plate 503, the high end of the inclined surface 509 moves towards the positioning plate 503. Since the guide rod 510 is slidably mounted on the positioning plate 503, the guide rod 510 guides the movement of the top block 507. The roller 515 rolls on the inclined surface 509 and rotates itself. As the high end of the inclined surface 509 gradually moves towards the positioning plate 503, the roller 515 pushes the connector 513 and the top rod 511 upward. The upper end of the top rod 511 passes through the through hole 201 and then through the through hole 302 into the disc 301, pushing the limit cover 306 upward. When the drive cylinder 506 retracts, the top rod 511 returns downward under the elastic force of the return spring 512.

[0058] See Figure 1 and Figure 2 The welding equipment 600 includes a high-frequency oscillation chamber 602, on which a high-frequency induction coil 601 is connected. The high-frequency induction coil 601 is connected to the high-frequency oscillation chamber 602 and suspended above the rotating disk 200. When the lifting mechanism 500 lifts the workpiece upward, the welding part of the workpiece moves to the position of the high-frequency induction coil 601 for welding. When the lifting mechanism 500 does not lift the limit cover 306 upward, the upper end of the thermocouple nickel head 2000 is lower than the high-frequency induction coil 601, and the high-frequency induction coil 601 will not obstruct the rotation direction of the thermocouple nickel head 2000.

[0059] See Figure 14 , Figure 15 and Figure 16The device also includes a feeding mechanism 700, which is located on one side of the rotary table 200. The feeding mechanism 700 includes a housing 701 with a door 702. A motor is installed inside the housing 701, and the output end of the motor extends out of the housing 701 and is connected to the rotary table 703. The motor drives the rotary table 703 to rotate. A lifting cylinder is installed on the rotary table 703, and the output end of the lifting cylinder is connected to a lifting arm 705. The lifting cylinder drives the lifting arm 705 to move up and down. The lifting arm 705 is connected to the gripping assembly 800 via a connecting key 706. Two reinforcing blocks 707 are provided at the angle between the connecting key 706 and the lifting arm 705 to strengthen the connection between the connecting key 706 and the lifting arm 705.

[0060] See Figure 15 and Figure 16 The gripping component 800 includes a lifting cylinder 802, which is connected to a connecting key 706 via a first connecting bracket 803. A positioning disk 801 is connected to the output end of the lifting cylinder 802, and the positioning disk 801 can move up and down. A fixed disk 807 is located below the positioning disk 801, and is connected to the connecting key 706 via a second connecting bracket 808. The fixed disk 807 is located below the positioning disk 801, and has several openings on it. A circular hole 806 is provided. The lower end of the positioning plate 801 is provided with several movable rods 805. Each movable rod 805 is correspondingly inserted into a circular hole 806 and extends downward. The lower end of each movable rod 805 is hinged to the inner side of the clamping arm 810 through a hinge 809. The outer side of the clamping arm 810 is connected to the fixing seat 813 through a fixing member 812. The fixing seat 813 is provided at the lower end of the fixing plate 807. The lower end of the clamping arm 810 is provided with a clamping finger 816.

[0061] When it is necessary to clamp the welded workpiece, the rotary table 703 first drives the lifting arm 705 to descend, and at the same time, the lifting cylinder 802 pushes the positioning plate 801 to move downward. The positioning plate 801 drives each movable rod 805 to move downward. Since the lower end of each movable rod 805 is hinged to the inner side of the clamping arm 810 through the hinge 809, and the outer side of the clamping arm 810 is fixed to the fixed seat 813 through the fixing member 812, and the fixed seat 813 is fixed to the fixed plate 807, when the movable rod 805 is pushed downward, it causes each clamping finger 816 to open outward. After opening, the lifting cylinder 802 then moves the workpiece downward. Pulling up the positioning plate 801 causes the gripping fingers 816 to come together inward, thereby gripping the copper sleeve 1000. The gripping component 800 only grips the copper sleeve 1000 without contacting the thermocouple nickel head 2000, thus avoiding damage to the newly welded area. After gripping, the rotating table 703 drives the lifting arm 705 to move upward, pulling the copper sleeve 1000 out of the workpiece positioning component 300. Then, the motor drives the rotating table 703 to rotate, moving the workpiece gripped by the gripping component 800 to the next process position. The gripping fingers 816 are released and moved downward, allowing the welded workpiece to fall into the cooling pool for cooling.

[0062] See Figure 17 This embodiment also provides a method for using an apparatus for continuous welding of thermocouple nickel tips, the method comprising the following steps.

[0063] S1: After manually fastening the copper sleeve 1000 and the thermocouple nickel head 2000 together, insert it into the limiting hole 308 of the workpiece positioning assembly 300 for positioning. At this time, the copper sleeve 1000 is fixed through the limiting hole 308, and the lower half of the copper sleeve 1000 is located in the positioning cavity 309.

[0064] S2: The rotating disk 200 is driven to rotate by the drive motor of the power mechanism 100, and the workstation with the workpiece is rotated to the position below the welding equipment 600 and then stopped.

[0065] S3: The lifting mechanism 500 drives the top block 507 to move towards the positioning plate 503 via the drive cylinder 506. The high end of the inclined surface 509 moves towards the positioning plate 503. The roller 515 lifts the connecting piece 513 and the top rod 511 upward. The upper end of the top rod 511 passes through the through hole 201 and then through the through hole 302 into the disc 301, lifting the limiting cover 306 upward. The limiting cover 306 drives the copper sleeve 1000 and the thermocouple nickel head 2000 to move upward, so that the welding part of the workpiece moves to the high-frequency induction coil 601 of the welding equipment 600.

[0066] S4: High-frequency induction welding is performed on the welding parts of the workpiece by means of the high-frequency induction coil 601 of the welding equipment 600.

[0067] S5: After welding is completed, the drive cylinder 506 retracts, and the push rod 511 returns to its original position under the elastic force of the return spring 512. The limit cover 306 then descends, and the workpiece returns to its original position as the limit cover 306 descends. At this time, the upper end of the thermocouple nickel head 2000 is lower than the high-frequency induction coil 601, and will not hinder the rotation of the subsequent rotating disk 200.

[0068] S6: The rotating disk 200 is driven to rotate by the power mechanism 100, and the welded workpiece is rotated to the unloading mechanism 700. The gripping component 800 of the unloading mechanism 700 only holds the copper sleeve 1000 to take the welded workpiece out of the workpiece positioning component 300 and transfer it to the next process for cooling.

[0069] The optimal working principle of this invention is as follows: Before operation, the copper sleeve 1000 is manually fastened to the thermocouple nickel head 2000. Then, the copper sleeve 1000 is inserted into the limiting hole 308 of the workpiece positioning assembly 300. The lower half of the copper sleeve 1000 is located in the positioning cavity 309. The center line of the positioning hole 310 coincides with the center lines of the through hole 302 and the through hole 201, thus completing the workpiece positioning and clamping. Nine workpiece positioning assemblies 300 can simultaneously load nine sets of workpieces. The nine through holes 201 on the rotating disk 200 and the nine workpiece positioning assemblies 300 are arranged in a circular array around the center line of the rotating disk 200. The drive motor in the power mechanism 100 is located inside the housing 101, and the output end of the drive motor extends upward out of the housing 101. 1. It is connected to the drive gear 105, which meshes with the driven gear 106. The driven gear 106 is sleeved on the output shaft 107. The lower end of the output shaft 107 is rotatably connected to the housing 101, and the upper end is connected to the rotary disk 200. When the drive motor runs, it drives the rotary disk 200 to rotate in sequence through the drive gear 105, the driven gear 106, and the output shaft 107, rotating the workpiece-loaded station to the welding station below the welding equipment 600. When the station rotates to the welding station, the drive motor stops, and the lifting mechanism 500 starts to operate. The drive cylinder 506 in the lifting mechanism 500, located outside the mounting plate 502, drives the top block 507 to move towards the positioning plate 503. The inclined surface 50 at the upper end of the top block 507... The high end of the top block 507 moves towards the positioning plate 503. Two guide rods 510 at the end of the top block 507 furthest from the drive cylinder 506 slide along the positioning plate 503 to guide the movement of the top block 507. The roller 515 rolls on the inclined surface 509 and rotates on its own. As the high end of the inclined surface 509 gradually approaches the positioning plate 503, the roller 515 pushes the connecting piece 513 and the top rod 511 upwards. The top rod 511 slides upwards along the top plate 505. The upper end of the top rod 511 passes through the through hole 201 on the rotating disk 200 and the through hole 302 on the disk 301, extending into the disk 301 and pushing the limiting cover 306 upwards. The limiting cover 306, with the cooperation of the guide limiting rod 305 and the guide groove 307, only moves upwards without rotating. When the limiting cover 306 moves upward, it drives the copper sleeve 1000 and the thermocouple nickel head 2000 to move upward together, so that the connection between the copper sleeve 1000 and the thermocouple nickel head 2000, i.e. the part to be welded, moves to the position of the high-frequency induction coil 601. The high-frequency oscillation box 602 of the welding equipment 600 generates a high-frequency current and performs high-frequency induction welding on the workpiece through the high-frequency induction coil 601. After welding is completed, the drive cylinder 506 retracts, and the top block 507 moves back under the drive cylinder 506. The high end of the inclined surface 509 moves away from the positioning plate 503. Under the elastic force of the return spring 512, the top rod 511 returns downward, and the limiting cover 306 descends accordingly. The copper sleeve 1000 and the thermocouple nickel head 2000 reset as the limiting cover 306 descends.At this point, the upper end of the thermocouple nickel head 2000 is lower than the high-frequency induction coil 601 suspended above the rotating disk 200, so it will not cause structural interference to the subsequent rotation of the rotating disk 200. The power mechanism 100 drives the rotating disk 200 to rotate again, rotating the welded station to the unloading mechanism 700. The motor in the unloading mechanism 700 drives the rotating table 703 to rotate so that the gripping component 800 is aligned with the workpiece. The lifting cylinder drives the lifting arm 705 to descend, and the lifting cylinder 802 pushes the positioning disk 801 to move downward. The positioning disk 801 drives each movable rod 805 to move downward. Each movable rod 805 pushes the clamping arm 810 through the hinge 809 so that each clamping finger 816 opens outward. Then the lifting cylinder 802 pulls the positioning disk 801 upward. Each movable lever 805 moves upward, and each clamping finger 816 closes inward to clamp the copper sleeve 1000. Since the gripping assembly 800 only clamps the lower copper sleeve 1000 and does not contact the thermocouple nickel head 2000, damage to the newly welded area is avoided. After clamping, the lifting cylinder drives the lifting arm 705 upward, pulling the copper sleeve 1000 along with the thermocouple nickel head 2000 out of the workpiece positioning assembly 300. Then, the motor drives the rotary table 703 to rotate, moving the workpiece clamped by the gripping assembly 800 above the cooling pool. The clamping fingers 816 are released and moved downward, allowing the welded workpiece to fall into the cooling pool for cooling. Simultaneously, other stations can perform loading and welding operations, thus achieving continuous welding of the thermocouple nickel head.

[0070] The preferred embodiments of the present invention disclosed above are only for the purpose of illustrating the present invention. The optional embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation described. Obviously, many modifications and variations can be made according to the content of the embodiments of the present invention. The present invention selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can better understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An apparatus for continuous welding of thermocouple nickel tips, characterized in that, include: A power mechanism (100) is used to provide rotational driving force to drive the rotating disk (200) to rotate; A rotating disk (200) is disposed at the upper end of the power mechanism (100) and connected to the output end of the power mechanism (100). The rotating disk (200) has several through holes (201) for rotating under the drive of the power mechanism (100) to switch welding positions. Several workpiece positioning components (300) are disposed on the upper end of the rotary disk (200), and each workpiece positioning component (300) is disposed at a corresponding through hole (201) for positioning the copper sleeve and the thermocouple nickel head; A lifting mechanism (500) is disposed below the rotary disk (200). The output end of the lifting mechanism (500) can extend upward through the through hole (201) to lift the workpiece positioned in the workpiece positioning assembly (300) upward. Welding equipment (600) is suspended above the rotary disk (200) and is used to weld workpieces lifted by the lifting mechanism (500).

2. The apparatus for continuous welding of thermocouple nickel tips according to claim 1, characterized in that: The power mechanism (100) includes a housing (101) with an openable and closable door (102) on the housing (101). A drive motor is installed inside the housing (101), and the output end of the drive motor extends rotatably upward out of the housing (101). The output end of the drive motor is connected to a drive gear (105). A driven gear (106) is rotatably installed on the upper end of the housing (101). The driven gear (106) meshes with the drive gear (105). The driven gear (106) is sleeved on an output shaft (107). The lower end of the output shaft (107) is rotatably connected to the housing (101), and the upper end of the output shaft (107) is connected to the rotating disk (200) to drive the rotating disk (200) to rotate.

3. The apparatus for continuous welding of thermocouple nickel tips according to claim 1, characterized in that: A plurality of through holes (201) are arranged in a circular array around the center line of the rotating disk (200). There are nine through holes (201) and nine workpiece positioning components (300). Each through hole (201) and each workpiece positioning component (300) is arranged in a one-to-one correspondence.

4. The apparatus for continuous welding of thermocouple nickel tips according to claim 1, characterized in that: The workpiece positioning assembly (300) includes a disc (301), which is detachably mounted on the upper end of the rotating disk (200). A through hole (302) is provided on the disc (301), and the center line of the through hole (302) coincides with the center line of the corresponding through hole (201). A limiting cylinder (303) is provided on the disc (301), and the through hole (302) is located inside the limiting cylinder (303). A guide is provided around the limiting cylinder (303). A limiting rod (305) is provided. The lower end of the guiding limiting rod (305) is connected to the disc (301). The limiting cylinder (303) is covered with a limiting cover (306) with an opening facing downward. The inner wall of the limiting cover (306) is in contact with the outer wall of the limiting cylinder (303). A guide groove (307) is provided at the lower end of the limiting cover (306). The guiding limiting rod (305) is inserted into the guide groove (307) to limit the limiting cover (306) to move only up and down.

5. The apparatus for continuous welding of thermocouple nickel tips according to claim 4, characterized in that: The upper end of the limiting cover (306) is provided with a limiting hole (308), which is used to fix the copper sleeve (1000). The limiting hole (308) is provided with an upward-opening positioning cavity (309). The upper end of the positioning cavity (309) is connected to the upper inner wall of the limiting hole (308). The lower end of the positioning cavity (309) is provided with a positioning hole (310). The center line of the positioning hole (310) coincides with the center line of the through hole (302) and the through hole (201).

6. The apparatus for continuous welding of thermocouple nickel tips according to claim 1, characterized in that: The lifting mechanism (500) includes a base frame (501), on which a mounting plate (502) and a positioning plate (503) are mounted. The upper ends of the mounting plate (502) and the positioning plate (503) are connected by a top plate (505). A drive cylinder (506) is provided on the outer side of the mounting plate (502). A top block (507) is connected to the output end of the drive cylinder (506). The upper end of the top block (507) has an inclined surface (509). Two guide rods (510) are provided at the end of the top block (507) away from the drive cylinder (506). The two guide rods (510) are movably inserted through the positioning plate (503). On the top plate (505), a top rod (511) is slidably inserted. The lower end of the top rod (511) is connected to a connector (513). The lower end of the connector (513) is provided with a roller (515). The roller (515) cooperates with the inclined surface (509). When the drive cylinder (506) drives the top block (507) to move towards the positioning plate (503), the high end of the inclined surface (509) moves towards the positioning plate (503). The roller (515) lifts the connector (513) and the top rod (511) upward, so that the upper end of the top rod (511) passes through the through hole (201).

7. The apparatus for continuous welding of thermocouple nickel tips according to claim 6, characterized in that: The top block (507) has a weight reduction hole (508) in the middle, and a return spring (512) is sleeved on the top rod (511). The return spring (512) is located between the top plate (505) and the base frame (501) and is used to make the top rod (511) return downward when the drive cylinder (506) retracts.

8. The apparatus for continuous welding of thermocouple nickel tips according to claim 1, characterized in that: The welding equipment (600) includes a high-frequency oscillation chamber (602), on which a high-frequency induction coil (601) is connected. The high-frequency induction coil (601) is suspended above the rotating disk (200). When the lifting mechanism (500) lifts the workpiece upward, the welding part of the workpiece moves to the position of the high-frequency induction coil (601) for welding.

9. The apparatus for continuous welding of thermocouple nickel tips according to claim 1, characterized in that: It also includes a feeding mechanism (700), which is disposed on one side of the rotary disk (200); The unloading mechanism (700) includes a housing (701) with a door (702) on it. A motor is installed inside the housing (701), and the output end of the motor extends out of the housing (701) and connects to a rotary table (703). A lifting cylinder is installed on the rotary table (703), and a lifting arm (705) is connected to the output end of the lifting cylinder. The lifting arm (705) is connected to the gripping assembly (800) via a key (706). A reinforcing block (707) is provided at the angle between the connecting key (706) and the lifting arm (705); the gripping assembly (800) includes a lifting cylinder (802), which is connected to the connecting key (706) via a first connecting frame (803). The output end of the lifting cylinder (802) is connected to a positioning plate (801), and a fixing plate (807) is provided below the positioning plate (801). The fixing plate (807) is connected to a second connecting frame (805). 08) Connected to the connecting key (706), the lower end of the positioning plate (801) is provided with a plurality of movable rods (805), the fixed plate (807) is provided with a plurality of round holes (806), each of the movable rods (805) is correspondingly inserted into one of the round holes (806) and extends downward, the lower end of each of the movable rods (805) is hinged to the inner side of the clamping arm (810) through a hinge (809), and the outer side of the clamping arm (810) is connected to the fixing member (809) through a fixing member (809). 12) Connected to the fixed base (813), the fixed base (813) is located at the lower end of the fixed plate (807), and the lower end of the clamping arm (810) is provided with clamping fingers (816). When the lifting cylinder (802) pushes the positioning plate (801) to move downward, each clamping finger (816) opens outward. When the lifting cylinder (802) pulls the positioning plate (801) upward, each clamping finger (816) closes inward for clamping the copper sleeve.

10. A method of using an apparatus for continuous welding of thermocouple nickel tips, characterized in that, Includes the following steps: S1: After docking the copper sleeve (1000) with the thermocouple nickel head (2000), insert it into the workpiece positioning assembly (300) for positioning; S2: Drive the rotary disk (200) to rotate via the power mechanism (100), and rotate the workstation with the workpiece positioned to the bottom of the welding equipment (600); S3: The workpiece positioned in the workpiece positioning assembly (300) is lifted upward by the lifting mechanism (500), so that the welding part of the workpiece is moved to the welding equipment (600). S4: Welding is performed on the welding parts of the workpiece using the welding equipment (600); S5: After welding is completed, the lifting mechanism (500) retracts, and the workpiece descends with the workpiece positioning assembly (300); S6: Drive the rotary disk (200) to rotate through the power mechanism (100), rotate the welded workpiece to the unloading mechanism (700), and clamp and remove the welded workpiece through the gripping component (800) of the unloading mechanism (700).

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