Automatic feeding device for tungsten electrode surface string grinding

Abstract

This utility model discloses an automatic feeding device for serial grinding of tungsten electrode surfaces, comprising several grinding machines arranged in sequence and a conveying device. The conveying device includes a support and several V-shaped conveying wheels fixed on the support. The feeding end of the conveying device is equipped with a loading device, and the discharging end of the conveying device is equipped with a unloading device. The loading device includes a lifting mechanism and several sets of upper and lower plates. The right end of the lower plate is fixed to the support, and the right end of the upper plate is fixed to the right end of the lower plate. A gap is left between the lower plate and the upper plate. The lower plate has V-shaped grooves and inclined grooves. The tungsten electrode is placed in the inclined groove. The lifting mechanism is located on one side of the lower plate and lifts the tungsten electrode in the inclined groove onto the V-shaped groove and V-shaped conveying wheels. This utility model connects several grinding machines in series through an automatic feeding device. The grinding precision of the grinding machines is set sequentially from low to high along the conveying direction. The entire grinding process can be completed in one automatic loading and unloading operation, reducing labor intensity and improving grinding efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tungsten electrode processing equipment, and in particular to an automatic feeding device for grinding the surface of tungsten electrodes. Background Technology

[0002] Tungsten electrodes, due to the properties of tungsten, are well-suited for TIG welding and other similar applications. Adding rare earth oxides to metallic tungsten stimulates its electron work function, improving the welding performance of the tungsten electrode, resulting in better arc initiation, higher arc column stability, and lower electrode burn-off rate. Common rare earth additives include cerium oxide, lanthanum oxide, zirconium oxide, yttrium oxide, and thorium oxide.

[0003] The processing of tungsten electrodes involves steps such as wire drawing, straightening, grinding, and cutting into sections. The grinding process uses a centerless grinder to grind 5-10m long tungsten electrode rods to the required diameter and surface smoothness. Due to the high hardness of tungsten electrode material, multiple grinding stages, from rough grinding to fine grinding, are necessary. In current production environments, centerless grinders typically require manual assistance for loading. Rough grinding is performed first, followed by transferring the tungsten electrode rod to another grinder for fine grinding. This process is repeated multiple times, requiring numerous loading and unloading operations, resulting in high labor intensity, low efficiency, and long processing time – a significant problem. Utility Model Content

[0004] To address the aforementioned shortcomings, this utility model provides an automatic feeding device for serial grinding of tungsten electrode surfaces. The grinding precision of multiple grinding machines is set sequentially from low to high, and an automatic feeding device is designed between the grinding machines to automatically load and unload materials in one operation, completing the entire grinding process.

[0005] This utility model is achieved through the following technical solution: An automatic feeding device for grinding the surface of tungsten electrodes includes several grinding machines arranged in sequence and conveying devices respectively arranged on both sides of the grinding machines. The conveying devices are characterized by: a support frame and several V-shaped conveying wheels fixed on the support frame; a feeding device on the infeed end of the conveying device and a discharging device on the discharge end of the conveying device; the feeding device includes a lifting mechanism and several sets of upper and lower plates; the right end of the lower plate is fixed to the support frame; the right end of the upper plate is fixed to the right end of the lower plate; a gap is left between the lower and upper plates; a V-shaped groove and an inclined groove are formed on the lower plate; the V-shaped groove is at the same height and flush with the V-shaped conveying wheels; the tungsten electrode is placed in the inclined groove; the lifting mechanism is located on one side of the lower plate, and the lifting mechanism lifts the tungsten electrode in the inclined groove onto the V-shaped groove and the V-shaped conveying wheels.

[0006] In a further optimized manner, a power box is fixed to one side of the V-shaped transmission wheel.

[0007] In a further optimized manner, the feeding device includes a feeding plate, a first motor, and a first rotating shaft. The feeding plate is inclinedly disposed on the other side of the V-shaped conveyor wheel. The first motor is fixed to the end of the support. The first transmission shaft is fixed on the output shaft of the first motor. An auxiliary support is rotatably connected to the end of the first transmission shaft. The auxiliary support is fixed on the support. Several top material blocks are fixed on the first transmission shaft. When the first motor outputs, the first transmission shaft drives the top material blocks to rotate and push the tungsten electrode onto the feeding plate.

[0008] In a further optimized configuration, the lifting mechanism includes a second motor, a second drive shaft, and a limiting block. The second motor is fixed to the front end of the bracket, and the second drive shaft is fixed to the output end of the second motor. The second drive shaft passes through the lower plate, and several connecting rods are fixed on the second drive shaft. Lifting blocks are hinged to the connecting rods, and the limiting block is fixed to the side wall of the lower plate. A limiting hole is provided on the limiting block, and the lifting block passes through the limiting hole. When the second motor outputs power, the second drive shaft drives the limiting block to lift the tungsten electrode upward through the connecting rods.

[0009] Further optimized, the gap height between the inclined groove of the lower plate and the upper plate is greater than the outer diameter length of the tungsten electrode, but less than twice the outer diameter length of the tungsten electrode.

[0010] Furthermore, the upper plate is also provided with a gap adjustment mechanism, which includes a fixed plate, an adjusting bolt, a sliding rod, and an adjusting plate. The fixed plate is fixed to one side of the upper plate, the adjusting bolt is threaded to the fixed plate and passes through the fixed plate to be rotatably connected to the adjusting plate, and there are two sliding rods, which are fixed to the fixed plate and slidably connected to the adjusting plate.

[0011] Further optimized, an alignment tube is fixed to the end of the support. The alignment tube is funnel-shaped, and the small opening of the alignment tube is close to the feed port of the grinding machine.

[0012] Further optimized, the grinding machine is a centerless grinding machine, and several grinding machines are arranged sequentially along the conveying direction with grinding precision from low to high.

[0013] The beneficial effects of this utility model are: This invention discloses an automatic feeding device for series grinding of tungsten electrode surfaces. The automatic feeding device connects several grinding machines in series, and the grinding precision of the grinding machines is set sequentially from low to high along the conveying direction. The entire grinding process can be completed in one automatic loading and unloading, reducing labor intensity and improving grinding efficiency.

[0014] In this new type of feeding device, there is a gap between the upper plate and the lower plate, which is only enough for one tungsten electrode rod to roll in. The lifting mechanism automatically feeds one tungsten electrode at a time from the top of the inclined groove to the V-shaped groove and the V-shaped conveyor wheel. After multi-stage grinding, the unloading device automatically unloads the electrode, reducing manual intervention and improving the degree of automation.

[0015] The conveying device in this invention is equipped with a funnel-shaped alignment tube, which allows the tungsten electrode rod being conveyed to accurately enter the next stage of the grinding machine, reducing equipment jamming. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is an enlarged schematic diagram of the feeding device in this utility model.

[0018] Figure 3 This is an enlarged schematic diagram of the central conveying device in this utility model.

[0019] Figure 4 This is an enlarged schematic diagram of the feeding device in this utility model.

[0020] Figure 5 This is a side view of the present invention.

[0021] Figure 6 This is an enlarged schematic diagram of the upper plate and the lower plate in this utility model.

[0022] In the diagram: 1. Grinding machine; 2. Conveying device; 21. Support; 22. V-shaped conveyor wheel; 23. Power box; 24. Alignment tube; 25. Auxiliary V-shaped frame; 26. Auxiliary support. 3. Feeding device; 31. Off-duty; 311. Inclined chute; 312. V-groove; 32. Upper plate; 33. Lifting mechanism; 331. Second motor; 332. Second drive shaft; 333. Connecting rod; 334. Lifting block; 335. Limiting block; 34. Gap adjustment mechanism; 341. Fixed plate; 342. Adjusting bolt; 343. Slide rod; 344. Adjusting plate; 35. Gap; 4. Feeding device; 41. First motor; 42. Feeding plate; 421. Notch; 43. First drive shaft; 44. Top material block; 5. Tungsten electrode. Detailed Implementation

[0023] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. In the description of this invention, it should be noted that the terms "left," "right," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the direction of transmission, and are only used for the convenience of describing the invention and 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 present invention.

[0024] like Figures 1-6 As shown, this utility model provides an automatic feeding device for grinding the surface of tungsten electrodes, including several grinding machines 1 arranged in sequence and conveying devices 2 respectively arranged on both sides of the grinding machines 1. The conveying devices are used for feeding, discharging and connecting the feeding between the grinding machines. The conveying device 2 includes a support 21 and several V-shaped conveying wheels 22 fixed on the support 21.

[0025] The feeding end conveyor 2 (i.e., the first section of the conveyor) is equipped with a feeding device 3, and the discharging end conveyor 2 (i.e., the last section of the conveyor) is equipped with a discharging device 4. The feeding device lifts the tungsten electrodes one by one onto the conveyor. After being transported and polished in multiple stages, the tungsten electrodes are discharged on the last section of the conveyor via the discharging device.

[0026] like Figure 2 , 5 As shown in Figure 6, the feeding device 3 includes a lifting mechanism 33 and several sets of upper plates 32 and lower plates 31. Both the upper and lower plates are irregularly shaped plates. The right end of the lower plate 31 is fixed to the bracket 21, and the right end of the upper plate 32 is fixed to the right end of the lower plate 31. A gap 35 is left between the lower plate 31 and the upper plate 32. The lower plate 31 is provided with a V-shaped groove 312 and an inclined groove 311. The V-shaped groove 312 is at the same height and flush with the V-shaped conveyor wheel 22. The tungsten electrode 5 is placed in the inclined groove 311. The lifting mechanism 33 is set on one side of the lower plate 31. The lifting mechanism 33 pushes the tungsten electrode 5 in the inclined groove 311 onto the V-shaped groove 312 and the V-shaped conveyor wheel 22 for feeding.

[0027] As a preferred embodiment, a power box 23 is fixed to one side of the V-shaped transmission wheel 22. The power box can use a motor and worm gear or a motor and chain to provide power to the V-shaped transmission wheel. Our company uses a motor and worm gear, which makes the rotation of each V-shaped transmission wheel more stable. The specific connection structure of the motor, worm gear, gear and V-shaped transmission wheel is a common technical means and will not be described in detail.

[0028] As a preferred implementation method, such as Figure 4As shown, the feeding device 4 includes a feeding plate 42, a first motor 41, and a first rotating shaft. The feeding plate 42 is inclinedly disposed on the other side of the V-shaped conveyor wheel 22. The first motor 41 is fixed to the end of the bracket 21. The first transmission shaft 43 is fixed to the output shaft of the first motor 41. An auxiliary bracket 26 is rotatably connected to the end of the first transmission shaft 43. The auxiliary bracket 26 is fixed to the bracket 21. Several top material blocks 44 are fixed on the first transmission shaft 43. When the first motor 41 outputs power, the first transmission shaft 43 drives the top material blocks 44 to rotate and push the tungsten electrode 5 onto the feeding plate 42. The feeding plate also has several notches 421 to avoid affecting the rotation of the top material blocks 44 and to facilitate the smooth pushing of the tungsten electrode 5 onto the feeding plate 42.

[0029] As a preferred implementation method, such as Figure 2 , 6 As shown, the lifting mechanism 33 includes a second motor 331, a second transmission shaft 332, and a limiting block 335. The second motor 331 is fixed to the front end of the bracket 21, and the second transmission shaft 332 is fixed to the output end of the second motor 331. The second transmission shaft 332 passes through the lower plate 31, and several connecting rods 333 are fixed on the second transmission shaft 332. Lifting blocks 334 are hinged to the connecting rods. It should be noted that a slot is opened on the connecting rod 333, and the lifting block 334 is hinged in the slot. The hinge can slide slightly to ensure that the lifting block 334 can rise and fall normally. The limiting block 335 is fixed to the side wall of the lower plate 31, and a limiting hole is opened on the limiting block 335. The lifting block 334 passes through the limiting hole. When the second motor 331 outputs power, the second transmission shaft 332 drives the limiting block 334 to lift the tungsten electrode 5 upward through the connecting rods 333, and pushes the tungsten electrode onto the V-groove 312 and the V-shaped transmission wheel 22.

[0030] As a preferred implementation method, such as Figure 5 As shown, the height of the gap 35 between the inclined groove 311 of the lower plate 31 and the upper plate 32 is greater than the outer diameter of the tungsten electrode 5 but less than twice the outer diameter of the tungsten electrode 5. The inclined groove is inclined from left to right, and the tungsten electrode rolls down naturally in the inclined groove, but only one tungsten electrode can roll through the gap 5 at a time.

[0031] In a preferred embodiment, the upper plate 32 is further provided with a gap adjustment mechanism 34. The gap adjustment mechanism 34 includes a fixed plate 341, an adjusting bolt 342, a sliding rod 343, and an adjusting plate 344. The fixed plate 341 is fixed to one side of the upper plate 32. The adjusting bolt 342 is threadedly connected to the fixed plate 341 and passes through the fixed plate 341 to be rotatably connected to the adjusting plate 344. Two sliding rods 343 are provided, fixed to the fixed plate 341, and slidably connected to the adjusting plate 344. The height of the gap 35 is adjusted by the gap adjustment mechanism 34 to accommodate tungsten electrodes of different diameters and to prevent multiple tungsten electrodes from rolling off.

[0032] In a preferred embodiment, an alignment tube 24 is fixed to the end of the support 21. The alignment tube 24 is funnel-shaped, with its small opening close to the feed inlet of the grinding machine 1. Additionally, several auxiliary V-shaped supports 25 are spaced apart on the conveying device. During conveying, the tungsten electrode rod experiences some vibration. The auxiliary V-shaped supports 25 provide support for the tungsten electrode, preventing it from getting stuck under the V-shaped conveyor wheel. The alignment tube ensures the tungsten electrode accurately enters the feed inlet of the next stage grinding machine, eliminating the need for manual assistance and reducing equipment jamming.

[0033] In a preferred embodiment, the grinding machine 1 is a centerless grinding machine 1, and several grinding machines 1 are arranged along the conveying direction with grinding precision ranging from low to high. The tungsten electrode is first coarsely ground and then finely ground. This new invention connects several grinding machines in series using an automatic feeding device. The grinding precision of the grinding machines is set sequentially from low to high along the conveying direction. The entire grinding process can be completed in one automatic loading and unloading operation, reducing labor intensity and improving grinding efficiency.

[0034] This solution also includes a controller, the location of which is set by the operator according to the actual situation during operation. The controller is used to control the electrical components used in this solution, including but not limited to the first motor, the second motor, and the grinding machine. The controller is an Intel processor, an AMD processor, a PLC controller, a domestic Huawei Ascend series or a microcontroller, and a power supply is also used in conjunction with it.

[0035] All aspects not detailed in this utility model are well-known to those skilled in the art. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An automatic feeding device for serial grinding of tungsten electrode surfaces, comprising a plurality of grinding machines arranged in sequence and conveying devices respectively arranged on both sides of the grinding machines, characterized in that: The conveying device includes a support frame and several V-shaped conveying wheels fixed on the support frame. The conveying device at the feeding end is equipped with a feeding device, and the conveying device at the discharging end is equipped with a discharging device. The feeding device includes a lifting mechanism and several sets of upper and lower plates. The right end of the lower plate is fixed to the support frame, and the right end of the upper plate is fixed to the right end of the lower plate. There is a gap between the lower plate and the upper plate. The lower plate has V-shaped grooves and inclined grooves. The V-shaped grooves are at the same height and flush with the V-shaped conveying wheels. Tungsten electrodes are placed in the inclined grooves. The lifting mechanism is located on one side of the lower plate and lifts the tungsten electrodes in the inclined grooves onto the V-shaped grooves and V-shaped conveying wheels.

2. The automatic feeding device for tungsten electrode surface grinding according to claim 1, characterized in that: A power box is fixed to one side of the V-shaped transmission wheel.

3. The automatic feeding device for tungsten electrode surface grinding according to claim 2, characterized in that: The feeding device includes a feeding plate, a first motor, and a first drive shaft. The feeding plate is inclinedly arranged on the other side of the V-shaped conveyor wheel. The first motor is fixed to the end of the bracket. The first drive shaft is fixed on the output shaft of the first motor. An auxiliary bracket is rotatably connected to the end of the first drive shaft. The auxiliary bracket is fixed on the bracket. Several top material blocks are fixed on the first drive shaft. When the first motor outputs, the first drive shaft drives the top material blocks to rotate and push the tungsten electrode onto the feeding plate.

4. The automatic feeding device for tungsten electrode surface grinding according to claim 1, characterized in that: The lifting mechanism includes a second motor, a second drive shaft, and a limiting block. The second motor is fixed to the front end of the bracket, and the second drive shaft is fixed to the output end of the second motor. The second drive shaft passes through the lower plate, and several connecting rods are fixed on the second drive shaft. Lifting blocks are hinged to the connecting rods. The limiting block is fixed to the side wall of the lower plate, and a limiting hole is opened on the limiting block. The lifting block passes through the limiting hole. When the second motor outputs power, the second drive shaft drives the limiting block to lift the tungsten electrode upward through the connecting rods.

5. The automatic feeding device for tungsten electrode surface grinding according to claim 1, characterized in that: The gap height between the inclined groove of the lower plate and the upper plate is greater than the outer diameter of the tungsten electrode, but less than twice the outer diameter of the tungsten electrode.

6. The automatic feeding device for tungsten electrode surface grinding according to claim 5, characterized in that: The upper plate is also provided with a gap adjustment mechanism, which includes a fixed plate, an adjusting bolt, a sliding rod, and an adjusting plate. The fixed plate is fixed to one side of the upper plate. The adjusting bolt is threaded to the fixed plate and passes through the fixed plate to be rotatably connected to the adjusting plate. There are two sliding rods, which are fixed to the fixed plate and slidably connected to the adjusting plate.

7. The automatic feed device for tungsten electrode surface string milling according to claim 1, characterized in that: The end of the bracket is fixed with an alignment tube, which is funnel-shaped and has a small opening close to the feed port of the grinding machine.

8. The automatic feed device for tungsten electrode surface string milling according to claim 1, characterized in that: The grinding machine is a centerless grinding machine, and several grinding machines are arranged in sequence along the conveying direction with grinding precision from low to high.

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