Welding device for low-cobalt hard alloy milling cutter

Abstract

The invention relates to the technical field of milling cutter welding, in particular to a low-cobalt hard alloy milling cutter welding device which comprises a bottom plate, a welding machine installed on the bottom plate and an induction coil installed on the welding machine, a cutter body is placed in the middle of the induction coil, and a blade and welding flux are arranged on the cutter body; the cutter body is provided with the material removing assembly used for welding of the milling cutter, the material removing assembly can remove welding flux when the welding flux is melted into liquid and flows out in the process that the blade is welded to the cutter body, and welding slag is prevented from being formed through adhesion. By arranging the material removing assembly, in the welding process of the milling cutter, when welding flux is molten to form a liquid state and flows out, high-pressure gas generated by an air pressure high-pressure pump can be taken away and removed when entering a bent channel in a guide plate, so that the liquid welding flux is prevented from flowing to a cutter body or a blade to be cooled to form welding slag, and the welding quality of the milling cutter is improved. And the situation that the workload is increased due to treatment of the welding slag is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of milling cutter welding, in particular to a low-cobalt cemented carbide milling cutter welding device. Background Art

[0002] A milling cutter is a rotary tool with one or more teeth used for milling. It is mainly used to process planes, steps, grooves, formed surfaces and cut off workpieces on a milling machine. A low-cobalt carbide milling cutter refers to a milling cutter made of carbide material with a low cobalt content. The cutter body and blade of a low-cobalt carbide milling cutter require a welding device during the connection process. Commonly used welding devices such as high-frequency welding machines are used for milling cutter welding. The blade is placed on the cutter body and solder is placed between the two. It is then placed on the induction coil of the high-frequency welding machine. A high-frequency current passes through the induction coil, which generates a high-frequency alternating magnetic field around it. With the powerful eddy current effect generated by electromagnetic induction, it can heat the welded area to a suitable welding temperature in just a few seconds, so that the solder melts and connects the cutter body and the cutter.

[0003] When using a high-frequency welding machine to weld the cutter body and blade of a milling cutter, in most cases, workers place the solder and the blade in appropriate positions on the cutter body and feed them into the induction coil of the high-frequency welding machine. The solder gradually melts during the heating process. The melting degree of the solder is affected by many factors, such as current intensity, coil design, and improper manual operation. As a result, the solder often melts too much, and the solder at the edge flows out after it becomes liquid. When the solder is large, too much liquid will flow out, which will adhere to the cutter body or the blade. After cooling, welding slag is formed, which requires additional treatment and increases the workload.

[0004] Therefore, a low-cobalt cemented carbide milling cutter welding device is proposed. Summary of the invention

[0005] The object of the present invention is to provide a low-cobalt cemented carbide milling cutter welding device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a low-cobalt cemented carbide milling cutter welding device, comprising a base plate, a welding machine installed on the base plate and an induction coil installed on the welding machine, a cutter body is placed in the middle of the induction coil, and a blade and solder are arranged on the cutter body; a material removal component for milling cutter welding is arranged on the cutter body, and the material removal component can remove the solder when it melts into liquid and flows out during the process of welding the blade to the cutter body to prevent adhesion and formation of welding slag; a collecting component is arranged on the outside of the cutter body, and the collecting component can cool the liquid formed by the solder through a freezing liquid, and form a precipitate for collection; a separation component is arranged at the bottom end of the collecting component, and the separation component is used to remove the precipitate from the freezing liquid.

[0007] Preferably, a bracket is fixedly mounted on the bottom plate, a limit rod and a motor are fixedly mounted on the bracket, a threaded rod is rotatably connected to the limit rod, and the threaded rod is fixedly connected to the output shaft of the motor.

[0008] Preferably, a movable plate is slidably connected to the limiting rod, and the movable plate is threadedly connected to the threaded rod, a guide rod is fixedly connected to the bottom end of the limiting rod, and a connecting plate is movably connected to the movable plate.

[0009] Preferably, the material removal assembly includes a guide plate slidably connected to the guide rod, and the connecting plate is movably connected to the guide plate, a curved channel for discharging the solder solution is provided in the guide plate, and the edge position of the solder is located in the curved channel, and the inner cavity of the guide plate can fit snugly with the blade.

[0010] Preferably, a pneumatic high-pressure pump is fixedly mounted on the limit rod, and the pneumatic high-pressure pump is used to generate high-pressure air to bring out the flowing liquid solder through the curved channel, and the pneumatic high-pressure pump is provided with a pipe mouth that can be connected to the curved channel.

[0011] Preferably, the collecting assembly includes a cooling cylinder arranged at the bottom end of the guide plate, in which an internal hollow drainage ring and an inner cylinder are fixedly connected, and the lower half of the knife body is located in the inner cylinder, and a gap for discharging coolant is provided between the drainage ring and the cooling cylinder.

[0012] Preferably, the cooling cylinder is fixedly connected with a pipeline, the pipeline is fixedly connected with a solution tank for storing coolant, a pump body for extracting coolant is fixedly installed on the solution tank, and a drainage pipe is fixedly connected between the pump body and the drainage ring.

[0013] Preferably, the separation assembly includes a sedimentation box fixedly connected to the bottom end of the cooling cylinder for storing sediment, a first butterfly valve is provided in the cooling cylinder, a second butterfly valve is provided in the sedimentation box, and a filter is fixedly installed in the pipeline to prevent sediment from entering the solution tank.

[0014] Preferably, a cylinder is fixedly mounted on the bracket, and the cylinder is fixedly connected to the solution box, and the solution box is fixedly connected to the sedimentation box.

[0015] Beneficial effects of the present invention: 1. The present invention provides a material removal component so that when the solder melts and flows out in liquid form during the welding process of the milling cutter, the high-pressure gas generated by the air pressure pump enters the curved channel in the guide plate and can take away the gas, thereby preventing the liquid solder from flowing onto the cutter body or the blade and forming welding slag after cooling, thereby avoiding the need to process the welding slag and increase the workload.

[0016] 2. The present invention can make the liquid solder that is removed and carried away enter the cooling cylinder by arranging a collecting component, and the coolant in the solution tank is discharged downward along the cooling cylinder through the drainage ring to contact with the liquid solder to cool it down to form a fixed shape and fall downward to be collected by the coolant, thereby preventing the liquid solder from dripping randomly after being removed from the cutter body and unable to be collected centrally, thereby preventing the phenomenon of scalding the staff or dripping on the workbench to form sticky residue.

[0017] 3. The present invention can set up a separation component so that the solid solder in the mixture of solid solder and coolant falling downward forms a precipitate which is stored in a sedimentation box, and the precipitate can be separated, taken out and recovered separately with the cooperation of the first valve and the second valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of a low-cobalt cemented carbide milling cutter welding device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the cooling cylinder structure of a low-cobalt cemented carbide milling cutter welding device according to an embodiment of the present invention; Figure 3 A low-cobalt cemented carbide milling cutter welding device according to an embodiment of the present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 4 This is a schematic cross-sectional structural diagram of a guide plate of a low-cobalt cemented carbide milling cutter welding device according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the curved channel structure of a low-cobalt cemented carbide milling cutter welding device according to an embodiment of the present invention; Figure 6 This is a schematic cross-sectional view of a cooling cylinder of a low-cobalt cemented carbide milling cutter welding device according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of a precipitation box of a low-cobalt cemented carbide milling cutter welding device according to an embodiment of the present invention; Figure 8 The present invention is a schematic diagram of a partial cutter body structure of a low-cobalt cemented carbide milling cutter welding device according to an embodiment of the present invention.

[0020] The markings in the figure are: 1. Base plate; 2. Welding machine; 3. Induction coil; 4. Cutter body; 5. Blade; 6. Solder; 7. Bracket; 8. Limit rod; 9. Motor; 10. Threaded rod; 11. Moving plate; 12. Guide rod; 13. Connecting plate; 14. Guide plate; 15. Bend channel; 16. Air pressure high-pressure pump; 17. Cooling cylinder; 18. Drain ring; 19. Inner cylinder; 20. Gap; 21. Pipeline; 22. Solution tank; 23. Pump body; 24. Drain pipe; 25. Sedimentation tank; 26. First butterfly valve; 27. Second butterfly valve; 28. Filter; 29. ​​Cylinder. DETAILED DESCRIPTION

[0021] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0022] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] like Figures 1 to 8As shown, a specific embodiment of the present invention provides a low-cobalt cemented carbide milling cutter welding device, comprising a base plate 1, a welding machine 2 installed on the base plate 1 and an induction coil 3 installed on the welding machine 2, a cutter body 4 is placed in the middle of the induction coil 3, and a blade 5 and a solder 6 are arranged on the cutter body 4; a material removal component for milling cutter welding is arranged on the cutter body 4, and the material removal component can remove the solder 6 when it melts into liquid and flows out during the process of welding the blade 5 to the cutter body 4, so as to prevent adhesion and formation of welding slag, and the material removal component is arranged so that during the welding process between the cutter body 4 and the blade 5, the solder 6 between the two can be partially removed after melting, thereby preventing the liquid solder 6 from gradually flowing out between the cutter body 4 and the blade 5, flowing to the cutter body 4 or the blade 5 to form metal residue after cooling, and if the residue needs to be additionally processed after being formed, the additional workload is increased, and the cutter A collecting component is provided on the outside of the body 4. The collecting component can cool the liquid formed by the solder 6 through a freezing liquid, and form a precipitate for collection. By setting the collecting component, the removal component can cool and collect the liquid solder 6 after removing it, so that the liquid solder 6 can be cooled by the freezing liquid, so that it can be cooled in time to form metal residue and precipitate in the coolant, thereby preventing the liquid solder 6 from dripping at will after being removed, causing scalding of the staff or dripping on the workbench to form sticky residue. A separation component is provided at the bottom end of the collecting component. The separation component is used to take out the precipitate in the freezing liquid. After the liquid solder 6 is cooled by the freezing liquid, metal welding slag will be formed, that is, a precipitate will be formed in the coolant. By setting the separation component, the precipitate can be separated and taken out in the coolant to form metal welding slag recovery.

[0024] like Figure 2 , Figure 3 and Figure 8As shown, specifically, a bracket 7 is fixedly installed on the bottom plate 1, a limit rod 8 and a motor 9 are fixedly installed on the bracket 7, a threaded rod 10 is rotatably connected in the limit rod 8, and the threaded rod 10 is fixedly connected to the output shaft of the motor 9, a movable plate 11 is slidably connected in the limit rod 8, and the movable plate 11 is threadedly connected to the threaded rod 10, a guide rod 12 is fixedly connected to the bottom end of the limit rod 8, a connecting plate 13 is movably connected to the movable plate 11, a material removal assembly includes a guide plate 14 slidably connected to the guide rod 12, and the connecting plate 13 is movably connected to the guide plate 14, a curved channel 15 for discharging the molten solder 6 is provided in the guide plate 14, and the edge position of the solder 6 is In the curved channel 15, the inner cavity of the guide plate 14 can fit closely with the blade 5. When the blade body 4 and the blade 5 are welded, the blade 5 and the solder 6 are placed on the blade body 4, and the start motor 9 drives the threaded rod 10 to rotate, so that the movable plate 11 can move up and down in the limiting rod 8. The movement of the movable plate 11 can enable the guide plate 14 to move on the guide rod 12 through the connecting plate 13, so that the guide plate 14 can be close to the blade body 4 and fit the blade 5, or away from the blade body 4. Since the inner cavity of the guide plate 14 can fit closely with the blade 5, the guide plate 14 can exert a limiting effect on the blade 5, so that it maintains stability during the welding process.

[0025] like Figures 1 to 6As shown, specifically, a gas pressure high-pressure pump 16 is fixedly installed on the limit rod 8, and the gas pressure high-pressure pump 16 is used to generate high-pressure air to bring out the liquid solder 6 flowing out through the curved channel 15. The gas pressure high-pressure pump 16 is provided with a pipe mouth that can be connected to the curved channel 15. When the knife body 4 is in the induction coil 3, the welding machine 2 is started to make the induction coil 3 generate welding temperature, and the solder 6 between the knife body 4 and the blade 5 is gradually melted through heat transfer. At this time, the melted solder 6 will gradually become liquid and flow out to the outside, that is, flow out from between the knife body 4 and the blade 5. The gas pressure high-pressure pump 16 is started to generate high-pressure gas, and the high The compressed air enters the curved channel 15 on the guide plate 14 through the pipe opening. Since the edge position of the solder 6 is located in the curved channel 15, that is, the outflow position of the liquid solder 6 is located at the edge, the liquid solder 6 flowing out can be brought to the liquid solder 6 by the flowing high-pressure gas. The liquid solder 6 gradually flows out through the curved channel 15 under the action of the high-pressure gas. The material selected for the guide plate 14 is high temperature resistant and heat absorbing. It is a prior art. During operation, the guide plate 14 contacts the blade 4 and is in the induction coil 3, absorbing heat and maintaining itself at a high temperature, so that the liquid solder 6 passes through the curved channel inside it. 15, it will not cool down and solidify, but will always be in liquid state so that it can be taken out of the curved channel 15 by the high-pressure gas. The collecting assembly includes a cooling cylinder 17 arranged at the bottom end of the guide plate 14, and the cooling cylinder 17 is fixedly connected with an internal hollow drainage ring 18 and an inner cylinder 19, and the lower half of the blade body 4 is located in the inner cylinder 19, and a gap 20 for discharging the coolant is provided between the drainage ring 18 and the cooling cylinder 17. After flowing out of the curved channel 15, the liquid solder 6 enters the cooling cylinder 17 and drips downward in the cooling cylinder 17. The cooling cylinder 17 is fixedly connected with a pipe 21, and the pipe 21 is fixedly connected with a solvent for storing the coolant. The liquid tank 22 has a pump body 23 for extracting coolant fixedly mounted on the solution tank 22, and a drain pipe 24 is fixedly connected between the pump body 23 and the drain ring 18. At the same time, the pump body 23 is started to extract the coolant in the solution tank 22 and discharge it into the drain ring 18 through the drain pipe 24. The coolant entering the drain ring 18 is discharged downward along the cooling cylinder 17 through the gap 20. After the liquid solder 6 dripping downward contacts the coolant discharged downward, the liquid solder 6 is cooled by the coolant, so that the liquid solder 6 forms metal slag into a solid state and is discharged downward along with the flowing coolant.

[0026] like Figure 1 , Figure 2 and Figure 6As shown, specifically, the separation component includes a sedimentation box 25 fixedly connected to the bottom end of the cooling cylinder 17 for storing sediment, a first butterfly valve 26 is provided in the cooling cylinder 17, a second butterfly valve 27 is provided in the sedimentation box 25, a filter screen 28 is fixedly installed in the pipeline 21 for preventing sediment from entering the solution tank 22, the solid solder 6 and the coolant are discharged downward into the sedimentation box 25 at the bottom, the first butterfly valve 26 is in an open state, and the second butterfly valve 27 is in a closed state, so that the solid solder 6 and the coolant can be stored in the sedimentation box 25, and when the solid solder 6 and the coolant are stored in the sedimentation box 25, the solid solder 6 will settle downward therein and be at the bottom end of the inner cavity of the sedimentation box 25, that is, become sediment, as the subsequent solid solder 6 and coolant continue to increase, the liquid level of the coolant in the sedimentation box 25 gradually rises to the filter screen 28, at which time the coolant will pass through the filter screen 28 into the pipeline 21 and into the solution tank 22, so as to facilitate The coolant is circulated and extracted again by the pump body 23 to cool the liquid solder 6. The filter 28 can filter the coolant and prevent the fixed solder 6 from falling downward from the cooling cylinder 17 into the pipe 21. As the solid solder 6 in the sedimentation tank 25 increases, most of the volume in the sedimentation tank 25 is occupied by the sediment, and there is less coolant, that is, the solid solder 6. At this time, the first butterfly valve 26 is closed and the second butterfly valve 27 is opened. While closing the channel to prevent the coolant in the cooling cylinder 17 from being discharged downward, the sediment in the sedimentation tank 25 can be discharged outward, that is, the solid solder 6 is taken out for recovery. At this time, when the sediment is discharged, only a small amount of coolant is contained in it, which has no effect on the separation and discharge of the sediment in the coolant. After the separation is completed, the first butterfly valve 26 is opened and the second butterfly valve 27 is closed, so that the solid solder 6 and the coolant in the cooling cylinder 17 can be circulated and fall again and are convenient for subsequent separation and collection.

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 8As shown, specifically, a cylinder 29 is fixedly mounted on the bracket 7, and the cylinder 29 is fixedly connected to the solution tank 22, and the solution tank 22 is fixedly connected to the precipitation tank 25. After the liquid solder 6 flowing out between the cutter body 4 and the blade 5 is processed, the guide plate 14 is moved on the guide rod 12 by the motor 9 and separated from the cutter body 4. The cylinder 29 is started to push the solution tank 22 to move downward, thereby driving the entire cooling cylinder 17 and the inner cylinder 19 inside to move downward, and then the cutter body 4 in the inner cylinder 19 moves downward, and the cutter body 4 moves downward and gradually separates from the middle position of the induction coil 3, and then the cutter body 4 can be lifted up to be taken out. Similarly, when welding the next milling cutter again, the cutter body 4 is placed into The blade 5 on the cutter body 4 is welded to the inner cylinder 19, and the cylinder 29 is started to make the cutter body 4 gradually move upward again to the middle position of the induction coil 3. The motor 9 is started to make the guide plate 14 move close to the cutter body 4 and limit the blade 5 on the cutter body 4. Then, the welding between the cutter body 4 and the blade 5 can be carried out according to the above working process. During the use of the whole device, the cutter body 4 is placed in the inner cylinder 19, and the motor 9 can be used to limit the blade 5 on the cutter body 4. There is no need to manually use tools to support and limit the blade 5 during the welding process, which saves time and effort, reduces work intensity and the risk of scalding, and can weld multiple blades 5 at the same time, which is convenient to operate and improves welding efficiency.

[0028] It should be understood by those skilled in the art that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention, including the claims, is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of the present invention as above, which are not provided in detail for the sake of simplicity.

[0029] The present invention is intended to cover all such substitutions, modifications and changes that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A low-cobalt cemented carbide milling cutter welding device, comprising a base plate (1), a welding machine (2) mounted on the base plate (1), and an induction coil (3) mounted on the welding machine (2), characterized in that: A knife body (4) is placed in the middle of the induction coil (3), and a blade (5) and solder (6) are provided on the knife body (4); The cutter body (4) is provided with a material removal component for welding the milling cutter, and the material removal component can remove the solder (6) when it melts into liquid and flows out during the process of welding the blade (5) to the cutter body (4), so as to prevent adhesion and formation of welding slag; the outer side of the cutter body (4) is provided with a collection component, and the collection component can cool the liquid formed by the solder (6) by means of a freezing liquid, and form a precipitate for collection; A separation component is provided at the bottom end of the collecting component, and the separation component is used to take out the sediment in the freezing liquid.

2. A low-cobalt cemented carbide milling cutter welding device according to claim 1, characterized in that: A bracket (7) is fixedly mounted on the base plate (1), a limit rod (8) and a motor (9) are fixedly mounted on the bracket (7), a threaded rod (10) is rotatably connected to the limit rod (8), and the threaded rod (10) is fixedly connected to an output shaft of the motor (9).

3. A low-cobalt cemented carbide milling cutter welding device according to claim 2, characterized in that: A movable plate (11) is slidably connected to the limiting rod (8), and the movable plate (11) is threadedly connected to the threaded rod (10). A guide rod (12) is fixedly connected to the bottom end of the limiting rod (8), and a connecting plate (13) is movably connected to the movable plate (11).

4. A low-cobalt cemented carbide milling cutter welding device according to claim 3, characterized in that: The material removal assembly comprises a guide plate (14) slidably connected to the guide rod (12), and the connecting plate (13) is movably connected to the guide plate (14), a curved channel (15) for discharging a solution of the solder (6) is provided in the guide plate (14), and the edge position of the solder (6) is located in the curved channel (15), and the inner cavity of the guide plate (14) can fit snugly with the blade (5).

5. A low-cobalt cemented carbide milling cutter welding device according to claim 3, characterized in that: A pneumatic high-pressure pump (16) is fixedly mounted on the limit rod (8), and the pneumatic high-pressure pump (16) is used to generate high-pressure air to carry out the flowing liquid solder (6) through the curved channel (15). The pneumatic high-pressure pump (16) is provided with a pipe opening that can be connected to the curved channel (15).

6. A low-cobalt cemented carbide milling cutter welding device according to claim 4, characterized in that: The collecting assembly comprises a cooling cylinder (17) arranged at the bottom end of the guide plate (14), wherein an internal hollow drainage ring (18) and an inner cylinder (19) are fixedly connected to the cooling cylinder (17), and the lower half of the blade body (4) is located in the inner cylinder (19), and a gap (20) for discharging coolant is provided between the drainage ring (18) and the cooling cylinder (17).

7. A low-cobalt cemented carbide milling cutter welding device according to claim 6, characterized in that: The cooling cylinder (17) is fixedly connected to a pipe (21), the pipe (21) is fixedly connected to a solution tank (22) for storing cooling liquid, the solution tank (22) is fixedly mounted with a pump body (23) for extracting cooling liquid, and a drainage pipe (24) is fixedly connected between the pump body (23) and the drainage ring (18).

8. A low-cobalt cemented carbide milling cutter welding device according to claim 7, characterized in that: The separation assembly comprises a sedimentation box (25) fixedly connected to the bottom end of the cooling cylinder (17) for storing sediment, a first butterfly valve (26) is provided in the cooling cylinder (17), a second butterfly valve (27) is provided in the sedimentation box (25), and a filter screen (28) is fixedly installed in the pipeline (21) for preventing sediment from entering the solution tank (22).

9. A low-cobalt cemented carbide milling cutter welding device according to claim 8, characterized in that: A cylinder (29) is fixedly mounted on the bracket (7), and the cylinder (29) is fixedly connected to the solution box (22), and the solution box (22) is fixedly connected to the sedimentation box (25).

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