Alloy straight knife automatic welding process based on vision and high-frequency induction heating

Abstract

The invention discloses an alloy straight knife automatic welding process based on vision and high-frequency induction heating, which comprises a rack, a welding platform fixedly connected to the rack, a vision detection module and a high-frequency induction heating box, the vision detection module is fixedly mounted on the welding platform, a clamping cylinder is arranged on the welding platform, and the high-frequency induction heating box is arranged on the clamping cylinder. An axial abutting air cylinder is arranged on the welding platform, a clamping block is arranged at the telescopic end of the clamping air cylinder, a connecting base is arranged at the telescopic end of the axial abutting air cylinder, an abutting block is arranged at the end of the connecting base, a heating connecting wire is arranged on one side of the high-frequency induction heating box, and a semi-arc induction coil is arranged at the end of the heating connecting wire. A support frame is arranged on the welding platform; by arranging the axial abutting air cylinder, the connecting base of the axial abutting air cylinder and the abutting block of the axial abutting air cylinder, axial thrust can be provided for the cutter body, the assembling gap of the cutter body in the clamping process is effectively eliminated, and high-frequency micro-vibration, caused by strong eddy currents generated by an electromagnetic field during high-frequency induction heating, of the cutter body and alloy can be restrained.

Description

Technical Field

[0001] This invention relates to the technical field of cemented carbide tool manufacturing, specifically to an automatic welding process for cemented carbide straight tools based on vision and high-frequency induction heating. Background Technology

[0002] While current automated welding systems based on vision and high-frequency induction heating have achieved high-precision positioning and temperature control, they still have the following structural defects in terms of mechanical stability during the high-frequency induction heating process: During high-frequency induction heating, the strong eddy currents generated by the electromagnetic field will cause high-frequency micro-vibrations in the tool body and the alloy. Existing fixtures only use pneumatic grippers to fix the tool body shank, lacking an axial vibration damping structure. Furthermore, the gap between the induction coil and the welding part needs to be stable to ensure uniform heat field. After the existing cantilever induction coil support is deformed by heat, it is difficult to maintain the consistency of the gap, which can lead to local overheating or underheating. Summary of the Invention

[0003] The purpose of this invention is to provide an automated welding process for alloy straight knives based on vision and high-frequency induction heating, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an automatic welding process for alloy straight knives based on vision and high-frequency induction heating. The process includes a frame, a welding platform fixedly connected to the frame, a vision inspection module, and a high-frequency induction heating box. The vision inspection module is fixedly installed on the welding platform, and the high-frequency induction heating box is fixedly installed on the welding platform. A clamping cylinder is provided on the welding platform, and an axial abutment cylinder is provided on the welding platform. A clamping block is provided at the telescopic end of the clamping cylinder, and a connecting seat is provided at the telescopic end of the axial abutment cylinder. An abutment block is provided at the end of the connecting seat. A heating connection line is provided on one side of the high-frequency induction heating box, and a semi-circular arc induction coil is provided at the end of the heating connection line. A support frame is provided on the welding platform. The end of the support frame is provided with a fixed strip seat, and a thermal compensation induction coil assembly is provided on the fixed strip seat. The thermal compensation induction coil assembly includes a connecting slider. The movement and fine adjustment of the connecting sliders on both sides causes the semi-circular induction coil to move in the opposite direction to adjust the gap and maintain thermal deformation compensation. The connecting seat and the abutment block are provided with a trigger component, and the movement of the connecting slider is realized by the trigger component.

[0005] Preferably, the triggering component includes an abutment rod, a connecting seat and an abutment block with cylindrical grooves, a round cover at the opening of the cylindrical groove, and the abutment rod having a T-shaped rod structure and being slidably inserted into the round cover.

[0006] Preferably, a cylindrical airbag is provided between the abutting rod and the cylindrical groove, and a connecting pipe is provided at one end of the cylindrical airbag.

[0007] Preferably, the thermally compensated induction coil assembly further includes a transmission screw, a groove is provided at the bottom of the fixed strip seat, the transmission screw is located in the groove and is rotatably connected to the fixed strip seat through a bearing, the transmission screw has a double screw structure and the threads are arranged in opposite directions, and a storage seat is provided at one end of the fixed strip seat.

[0008] Preferably, connecting sliders are sleeved on both sides of the transmission screw, and the connecting sliders are connected to the transmission screw by internal and external threads. The end of the connecting slider is fixedly connected to the semi-circular induction coil.

[0009] Preferably, one end of the transmission screw passes through the storage base, a gear is provided at the end of the transmission screw, a mounting plate is provided on one side of the storage base, and a rack block is slidably inserted into the inside of the storage base. The rack block has an i-shaped structure and meshes with the gear.

[0010] Preferably, a return spring is provided between one end of the rack block and the storage seat, and a block-shaped airbag is provided between the other end of the rack block and the storage seat. The block-shaped airbag is connected and fixedly connected to the connecting pipe.

[0011] Preferably, a side groove is provided on one side of the storage base, and a cylinder is provided in the side groove. The cylinder is electrically connected to the control center. A stop is provided at the extension end of the cylinder, and the stop is in contact with the block-shaped airbag in the initial state.

[0012] Preferably, the clamping cylinders are symmetrically distributed about the axis of the axial abutment cylinder, the clamping blocks have a V-shaped block structure, the vision inspection module includes a robot execution unit and an industrial camera, the industrial camera is fixedly connected to the end of the robot execution unit, and the vision inspection module is equipped with a temperature sensor.

[0013] This process is applied in an automated alloy straight knife welding device based on vision and high-frequency induction heating, and includes the following steps: S1: Start the equipment power supply, the control center initializes each module, insert the cutter body into the V-shaped clamping block, the symmetrically distributed clamping cylinders automatically clamp the cutter handle, and the axial abutment cylinder pushes the connecting seat so that the abutment block is tightly attached to the end face of the cutter body. S2: The industrial camera of the vision inspection module scans the position of the cutting tool and the alloy, the robot execution unit adjusts the alloy to the welding position, and the temperature sensor monitors the ambient temperature in real time and feeds it back to the control center. S3: Start the high-frequency induction heating box. The semi-circular induction coil generates an alternating magnetic field to heat the welding part. If the temperature sensor detects that the local temperature is greater than the set threshold, the control center starts the cylinder, the stop block retracts and releases the rack block, the reset spring pulls the rack block to reset, the double screw reverses, and the connecting slider drives the induction coil to separate radially.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, by setting up an axial abutment cylinder and its connecting seat and abutment block, can provide axial thrust to the tool body, effectively eliminating assembly gaps in the tool body during clamping. This axial positioning not only ensures the accurate position of the tool body during welding, but more importantly, it can suppress the high-frequency micro-vibration of the tool body and alloy caused by the strong eddy currents generated by the electromagnetic field during high-frequency induction heating. Compared with the existing technology that only uses pneumatic grippers to fix the tool body handle, this invention significantly enhances the stability of the tool body during welding, laying the foundation for high-quality welding.

[0015] 2. This invention innovatively designs a heat-compensated induction coil assembly, including a connecting slider, a transmission screw, and a linkage mechanism driven by a triggering component. When the cutter body is in position and triggers the triggering component, or when the temperature sensor detects an overheating signal, the system can automatically adjust the position of the connecting sliders on both sides, thereby causing the semi-circular induction coils to move closer or further apart. This allows the gap between the induction coil and the welding part to be dynamically adjusted as needed, effectively compensating for gap changes caused by thermal deformation during welding, and overcoming the problem that it is difficult to maintain the consistency of the gap after the existing cantilever induction coil support is deformed by heat.

[0016] 3. The visual inspection module of this invention integrates a temperature sensor, which can monitor the temperature of the welding area in real time. When an overheating signal is detected, the control center will instruct the cylinder to move, push the block airbag, and drive the twin screws to rotate in the opposite direction through the gear and rack transmission mechanism, so that the induction coils are far apart, reducing the heating power or adjusting the heat field distribution, and preventing the tool welding area from overheating. This intelligent control based on temperature feedback significantly reduces the risk of local overheating or underheating, and improves welding quality and yield. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the automatic alloy straight knife welding device based on vision and high-frequency induction heating according to the present invention.

[0018] Figure 2 This is a schematic diagram of the connection base and the high-frequency induction heating box of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the connecting seat and the abutment block of the present invention.

[0020] Figure 4 This is a schematic diagram of the triggering component of the present invention.

[0021] Figure 5 This is a schematic diagram of the structure of the thermally compensated induction coil assembly of the present invention.

[0022] Figure 6 This is a schematic diagram of the internal structure of the storage base of the present invention.

[0023] In the diagram: 1. Frame; 2. Welding platform; 3. Axial contact cylinder; 31. Connecting seat; 32. Contact block; 33. Round cover; 34. Contact rod; 35. Cylindrical airbag; 36. Connecting pipe; 4. Clamping cylinder; 41. Clamping block; 5. Vision inspection module; 6. High-frequency induction heating box; 61. Semi-circular induction coil; 62. Heating connection line; 7. Support frame; 71. Fixing strip seat; 72. Groove; 73. Transmission screw; 74. Connecting slider; 75. Gear; 8. Storage seat; 81. Mounting plate; 82. Rack block; 83. Block airbag; 84. Return spring; 85. Side groove; 86. Cylinder; 87. Stop block. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figure 1 This is a schematic diagram of the structure of the automatic alloy straight knife welding device based on vision and high-frequency induction heating according to the present invention. The present invention provides a technical solution: an automatic alloy straight knife welding process based on vision and high-frequency induction heating. The process includes a frame 1, a welding platform 2 fixedly connected to the frame 1, a vision inspection module 5, and a high-frequency induction heating box 6. The vision inspection module 5 is fixedly installed on the welding platform 2, and the high-frequency induction heating box 6 is fixedly installed on the welding platform 2. A clamping cylinder 4 is fixedly fixed on the welding platform 2 by bolts, and an axial abutment cylinder 3 is fixedly fixed on the welding platform 2 by bolts. The axial abutment cylinder 3 provides axial thrust to the knife body to eliminate assembly gaps. A clamping block 41 is welded to the telescopic end of the clamping cylinder 4.

[0026] The clamping cylinders 4 are symmetrically distributed about the axis of the axially abutting cylinder 3. The clamping block 41 has a V-shaped block structure. The V-shaped structure adapts to different shank diameters. The vision inspection module 5 includes a robot execution unit and an industrial camera. The industrial camera is fixedly connected to the end of the robot execution unit. The vision inspection module 5 is equipped with a temperature sensor.

[0027] Figure 2 This is a schematic diagram of the structure of the connecting seat and the high-frequency induction heating box of the present invention. A connecting seat 31 is provided at the telescopic end of the axially abutting cylinder 3. An abutting block 32 is welded to the end of the connecting seat 31. A heating connecting line 62 is fixed on one side of the high-frequency induction heating box 6. A semi-circular arc induction coil 61 is fixed to the end of the heating connecting line 62. A support frame 7 is welded on the welding platform 2.

[0028] The end of the support frame 7 is welded with a fixed strip seat 71. A heat-compensated induction coil assembly is provided on the fixed strip seat 71. The heat-compensated induction coil assembly includes a connecting slider 74. The movement and fine adjustment of the connecting sliders 74 on both sides causes the semi-circular induction coil 61 to move in the opposite direction to adjust the gap and maintain thermal deformation compensation. A triggering component is provided on the connecting seat 31 and the abutment block 32. The movement of the connecting slider 74 is realized by the triggering component.

[0029] Figure 3 This is a schematic diagram of the structure of the connecting seat and the abutment block of the present invention. Figure 4 The diagram shows the structure of the triggering component of the present invention. The triggering component includes an abutment rod 34, a connecting seat 31, and an abutment block 32 with cylindrical grooves. A round cover 33 is provided at the opening of the cylindrical groove. The round cover 33 is fixed to the abutment block 32 by screws. The abutment rod 34 has a T-shaped rod structure and is slidably inserted into the round cover 33. A cylindrical airbag 35 is bonded between the abutment rod 34 and the cylindrical groove. One end of the cylindrical airbag 35 is fixedly connected to a connecting pipe 36. The cooperation between the cylindrical airbag 35 and the connecting pipe 36 converts mechanical displacement into a pneumatic signal.

[0030] After the blade body is inserted into the V-shaped clamp 41, the axial abutment cylinder 3 pushes the connecting seat 31, so that the abutment block 32 is tightly attached to the end face of the blade body. At this time, the T-shaped abutment rod 34 of the trigger component is compressed, and the cylindrical air bag 35 is in the initial compression state.

[0031] Figure 5 This is a schematic diagram of the structure of the thermally compensated induction coil assembly of the present invention. The thermally compensated induction coil assembly also includes a transmission screw 73. A groove 72 is provided at the bottom of the fixing strip seat 71. The transmission screw 73 is located in the groove 72 and is rotatably connected to the fixing strip seat 71 through a bearing. The transmission screw 73 has a double screw structure and the screw threads are arranged in opposite directions. A storage seat 8 is welded to one end of the fixing strip seat 71.

[0032] Both sides of the transmission screw 73 are fitted with connecting sliders 74, which are connected to the transmission screw 73 by internal and external threads. The end of the connecting slider 74 is fixedly connected to the semi-circular induction coil 61.

[0033] Figure 6 This is a schematic diagram of the internal structure of the storage base of the present invention. One end of the transmission screw 73 passes through the storage base 8, and a gear 75 is fixedly sleeved on the end of the transmission screw 73. A mounting plate 81 is provided on one side of the storage base 8. The mounting plate 81 is fixed to one side of the storage base 8 by screws. A rack block 82 is slidably inserted into the inside of the storage base 8. The rack block 82 has an incline structure and meshes with the gear 75.

[0034] A return spring 84 is fixedly connected between one end of the rack block 82 and the storage base 8, and a block-shaped airbag 83 is bonded between the other end of the rack block 82 and the storage base 8. The block-shaped airbag 83 is connected to and fixedly connected to the connecting tube 36.

[0035] A side groove 85 is provided on one side of the inside of the storage base 8. A cylinder 86 is fixed in the side groove 85 by screws. The cylinder 86 is electrically connected to the control center. A stop block 87 is welded to the telescopic end of the cylinder 86. The stop block 87 fits against the block-shaped airbag 83 in the initial state.

[0036] When the abutment rod 34 compresses the cylindrical airbag 35, the gas inside the airbag is introduced into the block airbag 83 through the connecting pipe 36, causing it to expand and push the rack block 82 to move. The rack block 82 drives the gear 75 to rotate, which in turn drives the double screw 73 to rotate. Because the screw threads rotate in opposite directions, the connecting sliders 74 on both sides move in opposite directions synchronously, pulling the semi-circular induction coils 61 on both sides closer to each other.

[0037] When high-frequency induction heating is performed, the temperature sensor on the vision detection module 5 receives an overheating signal and transmits the signal to the control center. The control center controls the cylinder 86 to start, causing its telescopic end to retract. This causes the stop block 87 to move inward. Due to the increased space, the block-shaped airbag 83 abuts against the rack block 82 under the elastic force of the return spring 84, causing the connecting sliders 74 on both sides to move synchronously. This pulls the semi-circular induction coils 61 on both sides away from each other to prevent overheating of the tool welding joint.

[0038] This process is applied in an automated alloy straight knife welding device based on vision and high-frequency induction heating, and includes the following steps: S1: Start the equipment power supply, the control center initializes each module, insert the blade into the V-shaped clamping block 41, the symmetrically distributed clamping cylinders 4 automatically clamp the blade handle, and the axial abutment cylinder 3 pushes the connecting seat 31 so that the abutment block 32 is tightly attached to the end face of the blade. S2: The industrial camera of vision inspection module 5 scans the position of the cutting tool and the alloy, the robot execution unit adjusts the alloy to the welding position, and the temperature sensor monitors the ambient temperature in real time and feeds it back to the control center. S3: Start the high-frequency induction heating box 6. The semi-circular induction coil 61 generates an alternating magnetic field to heat the welding part. If the temperature sensor detects that the local temperature is greater than the set threshold, the control center starts the cylinder 86. The stop block 87 retracts and releases the rack block 82. The reset spring 84 pulls the rack block 82 to reset. The double screw 73 reverses and the connecting slider 74 drives the induction coil 61 to separate radially.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic welding process for alloy straight knives based on vision and high-frequency induction heating, the process comprising a frame (1), a welding platform (2) fixedly connected to the frame (1), a vision inspection module (5), and a high-frequency induction heating box (6), characterized in that: The visual inspection module (5) is fixedly installed on the welding platform (2), the high-frequency induction heating box (6) is fixedly installed on the welding platform (2), the welding platform (2) is provided with a clamping cylinder (4), the welding platform (2) is provided with an axial abutment cylinder (3), the extension end of the clamping cylinder (4) is provided with a clamping block (41), the extension end of the axial abutment cylinder (3) is provided with a connecting seat (31), the end of the connecting seat (31) is provided with an abutment block (32), a heating connection line (62) is provided on one side of the high-frequency induction heating box (6), a semi-circular arc induction coil (61) is provided at the end of the heating connection line (62), and a support frame (7) is provided on the welding platform (2). The end of the support frame (7) is provided with a fixed strip seat (71), and a thermal compensation induction coil assembly is provided on the fixed strip seat (71). The thermal compensation induction coil assembly includes a connecting slider (74). The movement of the connecting sliders (74) on both sides causes the semi-circular induction coil (61) to move in the opposite direction to adjust the gap and maintain thermal deformation compensation. The connecting seat (31) and the abutment block (32) are provided with trigger components. The movement of the connecting slider (74) is realized through the trigger components.

2. The automatic welding process for alloy straight knives based on vision and high-frequency induction heating according to claim 1, characterized in that: The triggering component includes an abutment rod (34), a connecting seat (31), and an abutment block (32) with cylindrical grooves. A round cover (33) is provided at the opening of the cylindrical groove. The abutment rod (34) has a T-shaped rod structure and is slidably inserted into the round cover (33).

3. The automatic welding process for alloy straight knives based on vision and high-frequency induction heating according to claim 2, characterized in that: A cylindrical airbag (35) is provided between the abutting rod (34) and the cylindrical groove, and a connecting pipe (36) is provided at one end of the cylindrical airbag (35).

4. The automatic welding process for alloy straight knives based on vision and high-frequency induction heating according to claim 1, characterized in that: The thermally compensated induction coil assembly also includes a transmission screw (73), and a groove (72) is provided at the bottom of the fixed strip seat (71). The transmission screw (73) is located in the groove (72) and is rotatably connected to the fixed strip seat (71) through a bearing. The transmission screw (73) has a double screw structure and the screw threads are arranged in opposite directions. A storage seat (8) is provided at one end of the fixed strip seat (71).

5. The automatic welding process for alloy straight knives based on vision and high-frequency induction heating according to claim 4, characterized in that: Both sides of the transmission screw (73) are fitted with connecting sliders (74), and the connecting sliders (74) and the transmission screw (73) are connected by internal and external threads. The end of the connecting sliders (74) is fixedly connected to the semi-circular induction coil (61).

6. The automatic welding process for alloy straight knives based on vision and high-frequency induction heating according to claim 4, characterized in that: One end of the transmission screw (73) passes through the storage seat (8), and a gear (75) is provided at the end of the transmission screw (73). A mounting plate (81) is provided on one side of the storage seat (8). A rack block (82) is slidably inserted into the inside of the storage seat (8). The rack block (82) has a U-shaped structure and meshes with the gear (75).

7. The automatic welding process for alloy straight knives based on vision and high-frequency induction heating according to claim 6, characterized in that: A return spring (84) is provided between one end of the rack block (82) and the storage seat (8), and a block-shaped airbag (83) is provided between the other end of the rack block (82) and the storage seat (8). The block-shaped airbag (83) is connected to and fixedly connected to the connecting pipe (36).

8. The automatic welding process for alloy straight knives based on vision and high-frequency induction heating according to claim 4, characterized in that: The storage base (8) has a side groove (85) on one side inside. A cylinder (86) is installed in the side groove (85). The cylinder (86) is electrically connected to the control center. A stop block (87) is installed at the extension end of the cylinder (86). The stop block (87) fits against the block airbag (83) in the initial state.

9. The automatic welding process for alloy straight knives based on vision and high-frequency induction heating according to claim 1, characterized in that: The clamping cylinder (4) is symmetrically distributed about the axis of the axial abutment cylinder (3), the clamping block (41) has a V-shaped block structure, the vision inspection module (5) includes a robot execution unit and an industrial camera, the industrial camera is fixedly connected to the end of the robot execution unit, and the vision inspection module (5) is equipped with a temperature sensor.

10. The automatic welding process for alloy straight knives based on vision and high-frequency induction heating according to claim 1, characterized in that: This process is applied in an automated alloy straight knife welding device based on vision and high-frequency induction heating, and includes the following steps: S1: Start the equipment power supply, the control center initializes each module, insert the blade into the V-shaped clamp (41), the symmetrically distributed clamping cylinders (4) automatically clamp the blade handle, the axial abutment cylinder (3) pushes the connecting seat (31) so that the abutment block (32) is tightly attached to the end face of the blade; S2: The industrial camera of the vision inspection module (5) scans the position of the blade and the alloy, the robot execution unit adjusts the alloy to the welding position, and the temperature sensor monitors the ambient temperature in real time and feeds it back to the control center; S3: Start the high-frequency induction heating box (6), the semi-circular induction coil (61) generates an alternating magnetic field to heat the welding part. If the temperature sensor detects that the local temperature is greater than the set threshold, the control center starts the cylinder (86), the stop block (87) retracts to release the rack block (82), the reset spring (84) pulls the rack block (82) to reset, the double screw (73) reverses, and the connecting slider (74) drives the induction coil (61) to separate radially.

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