Shield machine tool automatic welding equipment and use method thereof

Abstract

The present invention discloses an automatic welding device for shield machine cutters and a method for using the device, including a machine room, a sliding door and a control panel are arranged outside the machine room, a welding mechanical arm, a tool clamping table rotating table, a tool clamping table and a plasma welding gun are installed in the machine room, the plasma welding gun is installed on the welding mechanical arm, a driving motor is arranged in the tool clamping table rotating table, and the tool clamping table is driven to rotate by the driving motor. The shield machine cutter welding device is provided with a tool welding layer welding condition detection function and a welding layer thickness detection function, through these functions, the qualified rate of the product is effectively improved, and a solid and reliable technical guarantee and process support are provided for the high-quality production of shield machine cutters.

Description

Technical Field

[0001] The invention relates to the technical field of tunneling cutters, and in particular to automatic welding equipment for shield machine cutters and a use method thereof. Background Art

[0002] The shield machine cutter is a type of shield machine cutter, mainly used for tunnel excavation operations in hard strata, such as rock strata. It is a key component on the shield machine cutterhead, which breaks rocks by rotating to advance the shield machine.

[0003] The shield machine cutter is a vulnerable part. Welding a wear-resistant layer on it can enhance its wear resistance and thus extend its service life. Therefore, the thickness of the welded wear-resistant layer is a very important factor. However, if the wear-resistant layer is not well welded, its strength may not meet the requirements and the wear-resistant layer will fall off quickly. Moreover, if the thickness of the wear-resistant layer on both sides of the cutter exceeds 48mm during welding, the cutter cannot meet the assembly requirements. Summary of the invention

[0004] The object of the present invention is to provide an automated welding device for shield machine cutters and a method of using the same, so as to solve the problem that the shield machine blade welding device mentioned in the above background technology lacks a detection function.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a shield machine tool welding device, comprising a machine room, a sliding door and a control panel are arranged outside the machine room, a welding mechanical arm, a tool clamping table rotating table, a tool clamping table and a plasma welding gun are installed in the machine room, the plasma welding gun is installed on the welding mechanical arm, a driving motor is arranged in the tool clamping table rotating table, and the tool clamping table is driven to rotate by the driving motor;

[0006] The tool clamping table includes a base, a tool fixture for clamping the tool is installed on the top of the base, and the tool fixture is driven to rotate by a tool driving rotation mechanism installed at the bottom of the base. Folding plates are arranged at both ends of the base, and a traverse mechanism is installed on each folding plate. Each traverse mechanism drives a detection table respectively, and a welding layer detection module is installed on one of the detection tables through a bracket, and travel sensors are installed on the upper and lower ends of the other detection table through brackets.

[0007] Preferably, the tool clamp comprises a clamping seat, a plurality of sliding grooves are arranged on the top of the clamping seat, a clamping head is slidably inserted in the sliding grooves, and the clamping head is driven by a hydraulic oil circuit.

[0008] Preferably, the clamping seat is arranged in a cylindrical shape, and a forward oil chamber and a reverse oil chamber are arranged on the side wall. The forward oil chamber and the reverse oil chamber form a sealed space with the base. A plurality of forward oil inlet holes are arranged in the forward oil chamber, and a plurality of reverse oil inlet holes are arranged in the reverse oil chamber. The forward oil chamber is connected with a forward oil inlet nozzle arranged at the bottom of the base, and the reverse oil chamber is connected with a reverse oil inlet nozzle arranged at the bottom of the base. A limiting pad is arranged in the middle of the clamping head, side rods are arranged on both sides of the lower end of the clamping head, and piston heads are arranged at the outer ends of the side rods. The piston heads at both ends are slidably inserted in the forward oil inlet hole and the reverse oil inlet hole respectively.

[0009] Preferably, the tool rotation driving mechanism includes a motor, a motor driving end is connected to a clamping seat via a pulley set and a transmission belt, a driven wheel in the pulley set and the clamping seat are fixed, and the pulley set and the transmission belt are covered with a protective shell.

[0010] Preferably, the lateral movement mechanism includes a servo motor fixed on the folding plate, the driving end of the servo motor is fixedly connected to a screw rod, one end of the screw rod is provided with a thread and the other end is provided with a smooth thread, one end of the two inspection tables is screwed to the threaded section of the screw rod and the other end is slidably matched with the smooth section of the other screw rod.

[0011] Preferably, the welding layer detection module includes a linear array CMOS camera and an LED linear light source, the linear array CMOS camera is perpendicular to the plane where the tool welding layer is located, and the light of the LED linear light source is obliquely irradiated on the plane where the tool welding layer is located.

[0012] In order to achieve the above functions, the following steps are proposed:

[0013] Step 1: Install the tool on the tool clamping table, and the tool clamping table clamps and fixes the tool;

[0014] Step 2: Use a plasma welding gun to weld the blade surface of the tool; after setting the welding parameters, the plasma welding gun welds a circle of welding layer on the surface of the tool;

[0015] Step 3: One of the traverse mechanisms drives the corresponding inspection platform to move towards the tool until it reaches the corresponding position. Then the linear array CMOS camera is perpendicular to the tool welding layer, and the light of the LED linear light source is irradiated obliquely on the tool welding layer below the CMOS camera.

[0016] Another traverse mechanism drives the inspection table to move, and makes the end of the stroke sensor contact the welding layers on both sides. As the tool rotates, the stroke sensor measures two sets of data. The sum of the extreme values ​​of the two sets of data is taken. If it is less than 48mm, it meets the requirements. If it is greater than 48mm, it proves that the welding layer is too thick and cannot meet the installation requirements.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The shield machine tool automatic welding device involved in the present invention is equipped with a tool welding layer welding condition detection function and a welding layer thickness detection function. Through these functions, the device can accurately and comprehensively detect the welding condition of the tool welding layer, and can also accurately measure the thickness of the welding layer. In this way, the tool products after welding can meet the various standards required for production, thereby effectively improving the product qualification rate, and providing solid and reliable technical guarantee and process support for the high-quality production of shield machine tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the internal structure of the cabin of the present invention

[0020] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 3 for Figure 1 Schematic diagram of tool clamping station structure;

[0022] Figure 4 for Figure 3 Schematic diagram of the bottom structure;

[0023] Figure 5 It is a schematic diagram of the structure of the clamping seat in the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the clamping head in the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the welding layer detection module in the present invention;

[0026] Figure 8 It is a schematic diagram of the tool structure in the present invention.

[0027] In the figure: 1. base; 2. driving tool rotation mechanism; 21. motor; 22. protective shell; 23. pulley group; 3. tool fixture; 31. clamping seat; 32. sliding groove; 33. clamping head; 331. limit pad; 332. side rod; 333. piston head; 34. forward oil chamber; 35. reverse oil chamber; 36. forward oil inlet hole; 37. reverse oil inlet hole; 4. bracket; 5. detection table; 6. stroke sensor; 7. welding layer detection module; 8. folding plate; 9. traverse mechanism; 91. servo motor; 92. screw; 10. forward oil inlet nozzle; 11. reverse oil inlet nozzle; 12. warehouse door; 13. welding robot arm; 14. plasma welding gun; 15. machine warehouse; 16. control panel; 17. tool clamping table rotating table. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-8 , an automatic welding device for shield machine cutters, comprising a machine room 15, a sliding door 12 and a control panel 16 are arranged outside the machine room 15, a welding mechanical arm 13, a tool clamping table rotating table 17, a tool clamping table and a plasma welding gun 14 are installed in the machine room 15, the plasma welding gun 14 is installed on the welding mechanical arm 13, a driving motor is arranged in the tool clamping table rotating table 17, and the tool clamping table is driven to rotate by the driving motor;

[0030] The tool clamping table includes a base 1, on the top of which is installed a tool fixture 3 for clamping a tool. The tool fixture 3 is driven to rotate by a tool driving rotation mechanism 2 installed at the bottom of the base 1. Folding plates 8 are arranged at both ends of the base 1, and each folding plate 8 is installed with a traverse mechanism 9. Each traverse mechanism 9 drives a detection table 5 respectively, one of which is installed with a welding layer detection module 7 through a bracket 4, and the other detection table 5 is installed with a travel sensor 6 at both ends through the bracket 4.

[0031] The tool fixture 3 comprises a clamping seat 31 , a plurality of sliding grooves 32 are arranged on the top of the clamping seat 31 , a clamping head 33 is slidably inserted in the sliding groove 32 , and the clamping head 33 is driven by a hydraulic oil circuit.

[0032] The clamping seat 31 is arranged in a cylindrical shape, and a forward oil chamber 34 and a reverse oil chamber 35 are arranged on the side wall. The forward oil chamber 34 and the reverse oil chamber 35 form a sealed space with the base 1. A plurality of forward oil inlet holes 36 are arranged in the forward oil chamber 34, and a plurality of reverse oil inlet holes 37 are arranged in the reverse oil chamber 35. The forward oil chamber 34 is connected with a forward oil inlet nozzle 10 arranged at the bottom of the base 1, and the reverse oil chamber 35 is connected with a reverse oil inlet nozzle 11 arranged at the bottom of the base 1. A limiting pad 331 is arranged in the middle of the clamping head 33, and side rods 332 are arranged on both sides of the lower end of the clamping head 33. A piston head 333 is arranged at the outer end of the side rod 332, and the piston heads 333 at both ends are slidably inserted in the forward oil inlet hole 36 and the reverse oil inlet hole 37 respectively.

[0033] The tool rotation driving mechanism 2 includes a motor 21, a driving end of the motor 21 is connected to a clamping seat 31 through a pulley set 23 and a transmission belt, and the driven wheel in the pulley set 23 and the clamping seat 31 are fixed, and the pulley set 23 and the transmission belt are covered with a protective shell 22.

[0034] The traverse mechanism 9 includes a servo motor 91 fixed on the folding plate 8, and the driving end of the servo motor 91 is fixedly connected to a screw rod 92. One end of the screw rod 92 is provided with a thread and the other end is provided with a smooth thread. One end of the two inspection tables 5 is screwed to the threaded section of the screw rod 92 and the other end is slidably matched with the smooth section of the other screw rod 92.

[0035] The welding layer detection module 7 includes a linear array CMOS camera and an LED linear light source. The linear array CMOS camera is perpendicular to the plane of the tool welding layer, and the light of the LED linear light source is obliquely irradiated on the plane of the tool welding layer.

[0036] Working principle: Follow the following steps when using: Step 1: Install the tool on the tool clamping table, and the tool clamping table clamps and fixes the tool;

[0037] Step 2: Welding the blade surface of the tool by using a plasma welding gun 14; after setting the welding parameters, the plasma welding gun 14 welds a circle of welding layer on the surface of the tool;

[0038] Step three: One of the traverse mechanisms 9 drives the corresponding inspection platform 5 to move towards the tool until the corresponding position, and then the linear array CMOS camera is perpendicular to the tool welding layer, and the light of the LED linear light source is obliquely irradiated on the tool welding layer below the CMOS camera. The CMOS camera is mainly used to collect the surface image of the tool welding layer. The CMOS camera uploads the collected image to the external image processing system to realize the detection and identification of surface defects of the tool welding layer. If there are defects in the welding layer, its strength may not meet the requirements and the wear-resistant layer will fall off quickly.

[0039] Another transverse motion mechanism 9 drives the detection table 5 to move, and makes the end of the stroke sensor 6 contact the welding layers on both sides. As the tool rotates, the stroke sensor 6 measures two sets of data, and the sum of the extreme values ​​of the two sets of data is taken. If it is less than 48mm, it meets the requirements. If it is greater than 48mm, it proves that the welding layer is too thick and cannot meet the installation requirements.

[0040] When the surface defect detection and thickness detection of the welding layer are passed, the tool is put into use, thereby effectively improving the qualification rate of the product.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic welding device for shield machine cutters, comprising a machine chamber (15), a sliding chamber door (12) and a control panel (16) being arranged outside the machine chamber (15), characterized in that: A welding mechanical arm (13), a tool clamping table rotating table (17), a tool clamping table and a plasma welding gun (14) are installed in the machine chamber (15); the plasma welding gun (14) is installed on the welding mechanical arm (13); a driving motor is arranged in the tool clamping table rotating table (17), and the tool clamping table is driven to rotate by the driving motor; The tool clamping table comprises a base (1), a tool fixture (3) for clamping a tool is installed on the top of the base (1), the tool fixture (3) is driven to rotate by a tool driving rotation mechanism (2) installed at the bottom of the base (1), folding plates (8) are arranged at both ends of the base (1), each folding plate (8) is installed with a traverse mechanism (9), each traverse mechanism (9) drives a detection table (5), one of the detection tables (5) is installed with a welding layer detection module (7) through a bracket (4), and the other detection table (5) is installed with a travel sensor (6) at both ends through the bracket (4).

2. The shield machine tool automatic welding equipment and the use method thereof according to claim 1 are characterized in that: The tool clamp (3) comprises a clamping seat (31), a plurality of sliding grooves (32) are arranged on the top of the clamping seat (31), a clamping head (33) is slidably inserted in the sliding grooves (32), and the clamping head (33) is driven by a hydraulic oil circuit.

3. The shield machine tool automatic welding equipment and the use method thereof according to claim 2 are characterized in that: The clamping seat (31) is arranged in a cylindrical shape, and a forward oil chamber (34) and a reverse oil chamber (35) are arranged on the side wall. The forward oil chamber (34) and the reverse oil chamber (35) form a sealed space with the base (1). A plurality of forward oil inlet holes (36) are arranged in the forward oil chamber (34), and a plurality of reverse oil inlet holes (37) are arranged in the reverse oil chamber (35). The forward oil chamber (34) is connected to a forward oil inlet nozzle (10) arranged at the bottom of the base (1), and the reverse oil chamber (35) is connected to a reverse oil inlet nozzle (11) arranged at the bottom of the base (1). A limiting pad (331) is arranged in the middle of the clamping head (33), and side rods (332) are arranged on both sides of the lower end of the clamping head (33). A piston head (333) is arranged at the outer end of the side rod (332). The piston heads (333) at both ends are slidably inserted in the forward oil inlet hole (36) and the reverse oil inlet hole (37), respectively.

4. The shield machine cutter automatic welding equipment and the use method thereof according to claim 3 are characterized in that: The tool rotation driving mechanism (2) comprises a motor (21), a driving end of the motor (21) being connected to a clamping seat (31) via a pulley set (23) and a transmission belt, a driven wheel in the pulley set (23) and the clamping seat (31) being fixed, and the pulley set (23) and the transmission belt being covered with a protective shell (22).

5. The shield machine cutter automatic welding equipment and the use method thereof according to claim 4 are characterized in that: The traverse mechanism (9) comprises a servo motor (91) fixed on the folding plate (8), a driving end of the servo motor (91) being fixedly connected to a screw rod (92), one end of the screw rod (92) being provided with a thread and the other end being provided with a smooth thread, one end of the two inspection tables (5) being screwed to the threaded section of the screw rod (92) and the other end being slidably matched with the smooth section of the other screw rod.

6. The shield machine cutter automatic welding equipment and the use method thereof according to claim 5 are characterized in that: The welding layer detection module (7) comprises a linear array CMOS camera and an LED linear light source, wherein the linear array CMOS camera is perpendicular to the plane where the tool welding layer is located, and the light of the LED linear light source is obliquely irradiated on the plane where the tool welding layer is located.

7. The method for using the shield machine tool welding device according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Install the tool on the tool clamping table, and the tool clamping table clamps and fixes the tool; Step 2: welding the blade surface of the tool by using a plasma welding gun (14); after setting the welding parameters, the plasma welding gun (14) welds a circle of welding layer on the surface of the tool; Step 3: One of the traverse mechanisms (9) drives the corresponding detection platform (5) to move in a direction close to the tool until it reaches a corresponding position, and then the linear array CMOS camera is perpendicular to the tool welding layer, and the light of the LED linear light source is obliquely irradiated on the tool welding layer below the CMOS camera; Another traverse mechanism (9) drives the detection table (5) to move, and makes the end of the stroke sensor (6) contact the welding layers on both sides. As the tool rotates, the stroke sensor (6) measures two sets of data, and the sum of the extreme values ​​of the two sets of data is taken. If it is less than 48 mm, it meets the requirements. If it is greater than 48 mm, it proves that the welding layer is too thick and cannot meet the installation requirements.

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