Laser cutting opening device for large barrel

Abstract

The invention belongs to the technical field of laser cutting, and particularly relates to a laser cutting opening device for a large barrel, which comprises a hoisting plate, a mechanical arm mounted on the hoisting plate, a laser cutter mounted on an end effector of the mechanical arm, a vertical frame connected to the hoisting plate, and a moving frame with universal wheels connected to the upper part of the vertical frame, a two-way linear motor is installed on the moving frame, and two translation frames with opposite moving directions are installed on the two-way linear motor. The universal wheels make contact with the top of the annular top plate, the roller makes contact with the inner bottom of the roller wall, the annular top plate is embedded into grooves of the two electric rolling wheels, the electric rolling wheels move along the edge of the top plate, and the two positioning rods make contact with the outer wall of the square roller or the inner wall of the circular roller through the driving mechanism so that positioning and position fine adjustment can be conducted. And the positioning rod has flexible adaptability, laser cutting opening is automatically conducted on the cylinder wall under the cooperation of the mechanical arm and the laser cutter, and the automation degree and the cutting efficiency are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of laser cutting, and in particular relates to a laser cutting opening device for a large cylinder. Background Art

[0002] In the manufacturing process of the Dewar base, the large cylinder is first welded together, and then the pipe mouth after welding is laser cut to open. However, the large cylinder is large in size and complex in structure, and the pipe mouth has two shapes: square and round. The existing laser cutting device has many problems when opening such a large cylinder.

[0003] (1) During the cutting process of large cylinders, many operations require manual intervention, such as moving and positioning the device and adjusting the cutting position, which not only increases labor costs but also reduces cutting efficiency. It is difficult to meet the needs of large-scale production, and the degree of automation needs to be improved; (2) There is a lack of effective positioning means for large cylinders. The structural characteristics of square cylinders and round cylinders are different, making it difficult to flexibly adapt to different positioning requirements. As a result, it is difficult to ensure the accuracy of the cutting position, affecting the processing quality. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a laser cutting opening device for a large cylinder.

[0005] A laser cutting opening device for a large cylinder comprises a hoisting plate, a mechanical arm is mounted on the hoisting plate, a laser cutter is mounted on the end effector of the mechanical arm, a vertical frame is connected to the hoisting plate, a moving frame with universal wheels is connected to the upper part of the vertical frame, a bidirectional linear motor is mounted on the moving frame, two translation frames with opposite moving directions are mounted on the bidirectional linear motor, electric rollers that move along an annular top plate are mounted at the lower ends of the translation frames, a pair of positioning rods are arranged below the moving frame, and a driving mechanism for making the positioning rods contact a square cylinder or a round cylinder is arranged on the moving frame.

[0006] Further description, the middle part of the electric roller has an annular groove, and the annular groove cooperates with the annular top plate.

[0007] Further explanation: the driving mechanism includes a double-axis reduction motor, which is connected to the movable frame, and the two output shafts of the double-axis reduction motor are connected to rotating shafts, and the ends of the rotating shafts are connected to connecting plates, and a guide rod is connected between the two connecting plates. Two positioning rods slide on the guide rods, and a bidirectional screw rod is rotatably connected between the two connecting plates, and the positioning rods are threadedly connected to the bidirectional screw rods.

[0008] To further explain, the laser cutting opening device for large cylinders also includes a universal ball, an electric push rod and an electric suction cup. The electric push rod is installed on the side wall of the laser cutter through the universal ball, and the telescopic rod of the electric push rod is connected to an electric suction cup for adsorbing cutting waste.

[0009] Further explanation: the laser cutting opening device for a large cylinder also includes a right fixed plate, a rotating rod, a vertical baffle and a left fixed plate. The lifting plate has a placement portion, and the top of the placement portion is connected to the right fixed plate and the left fixed plate. The right fixed plate is rotatably connected to the rotating rod, a torsion spring is connected between the rotating rod and the right fixed plate, and the vertical baffle is connected to the rotating rod.

[0010] Further explanation: the laser cutting opening device for a large cylinder also includes a transverse baffle, which is connected to the right fixed plate, and the lower part of the vertical baffle has a pair of triangular parts in contact with the top of the transverse baffle; a placement area for placing cutting waste is formed between the placement part, the left fixed plate, the right fixed plate, the vertical baffle and the two vertical frames.

[0011] Further explanation: the laser cutting opening device for a large cylinder also includes a roller, and a plurality of rollers are rotatably connected to the bottom of the hanging plate.

[0012] Further explanation: the laser cutting opening device for a large cylinder also includes a climbing frame, the climbing frame is connected to the lifting plate, and the upper part of the climbing frame is connected to the vertical frame.

[0013] The beneficial effects of the present invention are as follows: 1. The universal wheel contacts the top of the annular top plate, the roller contacts the bottom of the inner wall of the cylinder, the annular top plate is embedded in the grooves of the two electric rollers, and the electric rollers move along the edge of the top plate. The two positioning rods are contacted with the outer wall of the square cylinder or the inner wall of the circular cylinder through the driving mechanism to perform positioning and fine-tuning of the position, thereby improving the cutting accuracy and the positioning rods have flexible adaptability. With the cooperation of the robotic arm and the laser cutter, the cylinder wall is automatically laser cut to open, thereby improving the degree of automation and cutting efficiency.

[0014] 2. When a cutting position is about to be completed, the electric push rod is controlled to drive the electric suction cup to move and suck the cutting waste. With the cooperation of the universal ball, the laser cutter completes the cutting. The robotic arm controls the position of the laser cutter and the electric suction cup, pulls the sucked cutting waste to the placement area and is enclosed. The cross baffle plays the role of blocking the waste and guiding it, which facilitates the subsequent processing of the cutting waste and reduces the difficulty of waste processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the state when the present invention is used.

[0016] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 3This is a schematic structural diagram of components such as the hoisting plate, robotic arm, electric control box, laser cutter, and electric push rod of the present invention.

[0018] Figure 4 This is a schematic structural diagram of components such as the vertical frame, moving frame, universal wheels, bidirectional linear motor, translation frame, electric rollers, positioning rod, and drive mechanism of the present invention.

[0019] Figure 5 This is a schematic structural diagram of components such as the moving frame, universal wheels, bidirectional linear motor, translation frame, and electric rollers of the present invention.

[0020] Figure 6 This is the front view of the present invention based on Figure 5 of the present invention.

[0021] Figure 7 This is a schematic structural diagram of the positioning rod and drive mechanism of the present invention.

[0022] Figure 8 This is a schematic structural diagram of components such as the laser cutter, universal ball, electric push rod, and electric suction cup of the present invention.

[0023] Fig. 9 This is a schematic structural diagram of components such as the right fixing plate, rotating rod, vertical baffle, and horizontal baffle of the present invention.

[0024] Fig.10 This is the present invention Fig. 9 Another perspective structural diagram of the present invention.

[0025] Fig.11 This is a schematic structural diagram of components such as the hoisting plate, electric control box, and roller of the present invention.

[0026] In the above drawings: 1. Hoisting plate, 2. Robotic arm, 21. Electric control box, 3. Laser cutter, 31. Cylinder wall, 32. Annular top plate, 33. Square cylinder, 34. Circular cylinder, 4. Vertical frame, 5. Moving frame, 51. Universal wheels, 6. Bidirectional linear motor, 7. Translation frame, 8. Electric rollers, 81. Groove, 9. Positioning rod, 91. Biaxial reduction motor, 92. Rotating shaft, 93. Connecting plate, 94. Guide rod, 95. Bidirectional lead screw, 101. Universal ball, 102. Electric push rod, 103. Electric suction cup, 110. Placing part, 111. Right fixing plate, 112. Rotating rod, 113. Vertical baffle, 114. Horizontal baffle, 115. Triangular part, 116. Left fixing plate, 12. Roller, 13. Climbing frame. Detailed implementation manners

[0027] The present invention will now be described more fully below with reference to the accompanying drawings, in which currently preferred embodiments of the present invention are shown. However, the present invention may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and these embodiments fully convey the scope of the present invention to the skilled person.

[0028] Example 1: A laser cutting opening device for a large cylinder, referring to Figure 1-Figure 7 , including a hoisting plate 1, a mechanical arm 2, an electric control box 21, a laser cutter 3, a vertical frame 4, a mobile frame 5, a bidirectional linear motor 6, a translation frame 7, an electric roller 8, a positioning rod 9 and a driving mechanism, a large cylinder after resist welding such as Figure 1 As shown, a mechanical arm 2 is installed on the top of the hanging plate 1, and an electric control box 21 for controlling the mechanical arm 2 and providing power is installed on the left side of the hanging plate 1. A laser cutter 3 is installed on the end effector of the mechanical arm 2. The cutting principle of the laser cutter 3 is the existing technology. A vertical frame 4 is welded on the right part of the hanging plate 1, and a moving frame 5 is fixedly connected to the upper part of the vertical frame 4. The bottom of the moving frame 5 has four universal wheels 51, and a bidirectional linear motor 6 is installed on the top of the moving frame 5. Two translation frames 7 with opposite moving directions are installed on the bidirectional linear motor 6. The lower ends of the translation frames 7 are all equipped with electric rollers 8 that move along the annular top plate 32. The middle parts of the electric rollers 8 are all provided with an annular groove 81, and the annular groove 81 cooperates with the annular top plate 32; a pair of positioning rods 9 are provided below the moving frame 5, and a driving mechanism for making the positioning rods 9 contact the square cylinder 33 or the circular cylinder 34 is provided on the right part of the moving frame 5.

[0029] refer to Figure 1 , Figure 2 , Figure 4 and Figure 7 The driving mechanism includes a double-axis reduction motor 91, a rotating shaft 92, a connecting plate 93, a guide rod 94 and a bidirectional screw 95. The double-axis reduction motor 91 is bolted to the right side of the top of the mobile frame 5. The two output shafts of the double-axis reduction motor 91 are connected to the rotating shaft 92. The ends of the rotating shaft 92 are fixedly connected to the connecting plates 93. A guide rod 94 is fixedly connected between the lower ends of the two connecting plates 93. Two positioning rods 9 slide on the guide rod 94. A bidirectional screw 95 driven by a driving motor is rotatably connected between the lower parts of the two connecting plates 93. The positioning rods 9 are all threadedly connected to the bidirectional screw 95.

[0030] refer to Fig.11 The laser cutting opening device for a large cylinder also includes a roller 12, and three rollers 12 are rotatably connected to the bottom of the hanging plate 1.

[0031] The first step is to control the dual-axis reduction motor 91 to drive the rotating shaft 92 to rotate 90 degrees counterclockwise, driving the connecting plate 93, the guide rod 94, the bidirectional screw rod 95 and the positioning rod 9 to rotate 90 degrees counterclockwise with the rotating shaft 92 as the axis, and use an external crane to lift the lifting plate 1 from top to bottom to the large cylinder until the four universal wheels 51 are in contact with the top of the annular top plate 32, the roller 12 is in contact with the bottom of the cylinder wall 31, the lifting plate 1, the mechanical arm 2 and the laser cutter 3 are located inside the cylinder wall 31, the two electric rollers 8 are respectively located on the inner and outer sides of the annular top plate 32, and the positioning rod 9 is located outside the cylinder wall 31. The specific position is referenced Figure 1 .

[0032] The second step is to control the bidirectional linear motor 6 to drive the two translation frames 7 to approach each other, and drive the two electric rollers 8 to approach each other until the inner and outer sides of the annular top plate 32 are respectively embedded in the grooves 81 of the two electric rollers 8. The crane releases the lifting plate 1 and controls the servo motor to drive the electric rollers 8 to rotate. Under the action of friction, the electric rollers 8 move along the edge of the top plate, driving the entire laser cutting opening device to move to the position to be cut on the cylinder wall 31. The drum 12 can rotate by itself, thereby playing a role in supporting and reducing friction.

[0033] In the third step, if the position where the square tube 33 is welded to the tube wall 31 is cut, the outer wall of the square tube 33 is flat, and the dual-axis reduction motor 91 is controlled to drive the rotating shaft 92 to rotate 90 degrees clockwise to reset, driving the connecting plate 93, the guide rod 94, the bidirectional screw rod 95 and the positioning rod 9 to rotate 90 degrees clockwise to reset with the rotating shaft 92 as the axis. The two positioning rods 9 are respectively located on both sides of the square tube 33, and then the driving motor is controlled to drive the bidirectional screw rod 95 to rotate. Under the action of the threaded connection, the two positioning rods 9 are synchronously close to each other until the two positioning rods 9 are in contact with the outer wall of the square tube 33; if the position where the circular tube 34 is welded to the tube wall 31 is cut, the outer wall of the circular tube 34 The wall has a raised edge and the inner wall of the circular cylinder 34 is flat. The driving motor can be controlled to drive the bidirectional screw rod 95 to rotate, so that the two positioning rods 9 are close to each other, and then the dual-axis reduction motor 91 can be controlled to make the rotating shaft 92, the connecting plate 93, the guide rod 94, the bidirectional screw rod 95 and the positioning rod 9 rotate 90 degrees clockwise to reset. The two positioning rods 9 then control the driving motor to drive the bidirectional screw rod 95 to reverse, so that the two positioning rods 9 are synchronously away from each other until the two positioning rods 9 are in contact with the inner wall of the circular cylinder 34; in this way, the positioning rod 9 has flexible adaptability, and the two positioning rods 9 are used for positioning, and the position of the entire device is fine-tuned to improve the position accuracy of subsequent laser cutting.

[0034] In the fourth step, the robot arm 2 is controlled by the electric control box 21 to control the position of the laser cutter 3 , so that the laser cutter 3 is used to laser cut an opening on the cylinder wall 31 .

[0035] In the fifth step, similarly, the dual-axis reduction motor 91 is used to rotate the rotating shaft 92, the connecting plate 93, the guide rod 94, the bidirectional screw rod 95 and the positioning rod 9 counterclockwise by 90 degrees, and the electric roller 8 continues to move along the edge of the top plate, so that the entire laser cutting opening device moves to the next cutting position of the cylinder wall 31, and the two positioning rods 9 are positioned through the driving mechanism, and the next cutting position is cut with the cooperation of the robot arm 2 and the laser cutter 3, thereby automatically completing the laser cutting opening work of the large cylinder, which can adapt to the large cylinder and improve the degree of automation and cutting efficiency.

[0036] Example 2: Based on Example 1, refer to Figure 3 and Figure 8 The laser cutting opening device for large cylinders also includes a universal ball 101, an electric push rod 102 and an electric suction cup 103. The electric push rod 102 is installed on the side wall of the laser cutter 3 through the universal ball 101. The telescopic rod of the electric push rod 102 is connected to the electric suction cup 103 for adsorbing cutting waste. The adsorption principle of the electric suction cup 103 is the existing technology.

[0037] refer to Figure 2 , Figure 3 , Fig. 9 and Fig.10 , the laser cutting opening device for large cylinders also includes a right fixed plate 111, a rotating rod 112, a vertical baffle 113 and a left fixed plate 116, the right part of the hanging plate 1 has a placing portion 110, the right side of the top of the placing portion 110 is fixedly connected to the right fixed plate 111, the middle part of the left side of the right fixed plate 111 is rotatably connected to the rotating rod 112, a torsion spring is connected between the rotating rod 112 and the right fixed plate 111, the vertical baffle 113 is fixedly connected to the rotating rod 112, and the left fixed plate 116 is welded to the left side of the top of the placing portion 110; the laser cutting opening device for large cylinders also includes a transverse baffle 114, the right side of the right fixed plate 111 is fixedly connected to the transverse baffle 114, and the lower right side of the vertical baffle 113 has a pair of triangular portions 115 in contact with the top of the transverse baffle 114; a placing area for placing cutting waste is formed around the placing portion 110, the left fixed plate 116, the right fixed plate 111, the vertical baffle 113 and the lower part of the two vertical frames 4.

[0038] refer to Figure 1 and Figure 2 The laser cutting opening device for a large cylinder also includes a climbing frame 13. The front side of the lifting plate 1 is connected to the climbing frame 13. The upper part of the climbing frame 13 is connected to the vertical frame 4. The climbing frame 13 is convenient for operators to climb for maintenance work.

[0039] When a cutting position is about to be cut, the electric push rod 102 is controlled to drive the electric suction cup 103 to move to contact with the cylinder wall 31, and the electric suction cup 103 is controlled to suck the cutting waste part, and the laser cutter 3 continues to cut. Due to the setting of the universal ball 101, the laser cutter 3 can move freely relative to the electric push rod 102. After the cutting is completed, the position of the laser cutter 3 and the electric suction cup 103 is controlled by the mechanical arm 2 to separate the cutting waste from the cylinder wall 31, thereby pulling the sucked cutting waste to move. During the movement, the cutting waste will push the vertical baffle 113 and the rotating rod 112 to rotate counterclockwise, and the torque The spring is deformed so that the cut waste can be smoothly pulled to the placement area. The horizontal baffle 114 plays the role of blocking and guiding the cut waste to prevent the cut waste from falling into the gap between the placement portion 110 and the cylinder wall 31. When the cut waste passes over the vertical baffle 113, the torsion spring recovers, driving the vertical baffle 113 and the rotating rod 112 to rotate clockwise and reset until the triangular portion 115 contacts the top of the horizontal baffle 114 to limit the position of the vertical baffle 113. The left fixed plate 116, the right fixed plate 111 and the vertical baffle 113 play the role of enclosing the cut waste, thereby facilitating the subsequent processing of the cut waste and reducing the difficulty of waste processing.

[0040] While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

Claims

1. A laser cutting opening device for a large cylinder, comprising a hanging plate (1), a mechanical arm (2) being mounted on the hanging plate (1), and a laser cutter (3) being mounted on the end effector of the mechanical arm (2), wherein: The hoisting plate (1) is connected to a vertical frame (4), the upper part of the vertical frame (4) is connected to a moving frame (5) having universal wheels (51), the moving frame (5) is mounted with a bidirectional linear motor (6), the bidirectional linear motor (6) is mounted with two translation frames (7) with opposite moving directions, the lower ends of the translation frames (7) are each mounted with an electric roller (8) that moves along an annular top plate (32), a pair of positioning rods (9) are arranged below the moving frame (5), and the moving frame (5) is provided with a driving mechanism for causing the positioning rods (9) to contact the square cylinder (33) or the circular cylinder (34).

2. A laser cutting opening device for a large cylinder according to claim 1, characterized in that: The electric roller (8) has an annular groove (81) in the middle, and the annular groove (81) cooperates with the annular top plate (32).

3. A laser cutting opening device for a large cylinder according to claim 2, characterized in that: The driving mechanism comprises a double-axis reduction motor (91), the double-axis reduction motor (91) is connected to the moving frame (5), the two output shafts of the double-axis reduction motor (91) are connected to a rotating shaft (92), the ends of the rotating shaft (92) are connected to a connecting plate (93), a guide rod (94) is connected between the two connecting plates (93), two positioning rods (9) slide on the guide rod (94), a bidirectional screw rod (95) is rotatably connected between the two connecting plates (93), and the positioning rods (9) are threadedly connected to the bidirectional screw rod (95).

4. A laser cutting opening device for a large cylinder according to claim 3, characterized in that: The laser cutting opening device for a large cylinder further comprises a universal ball (101), an electric push rod (102) and an electric suction cup (103); the electric push rod (102) is mounted on the side wall of the laser cutter (3) via the universal ball (101); and the electric suction cup (103) for adsorbing cutting waste is connected to the telescopic rod of the electric push rod (102).

5. A laser cutting opening device for a large cylinder according to claim 4, characterized in that: The laser cutting opening device for a large cylinder further comprises a right fixed plate (111), a rotating rod (112), a vertical baffle (113) and a left fixed plate (116); the hanging plate (1) comprises a placement portion (110); the top of the placement portion (110) is connected to the right fixed plate (111) and the left fixed plate (116); the right fixed plate (111) is rotatably connected to the rotating rod (112); a torsion spring is connected between the rotating rod (112) and the right fixed plate (111); and the rotating rod (112) is connected to the vertical baffle (113).

6. A laser cutting opening device for a large cylinder according to claim 5, characterized in that: The laser cutting opening device for a large cylinder further comprises a transverse baffle (114), the transverse baffle (114) being connected to the right fixed plate (111), the lower part of the vertical baffle (113) comprising a pair of triangular parts (115) in contact with the top of the transverse baffle (114); and a placement area for placing cutting waste is formed between the placement part (110), the left fixed plate (116), the right fixed plate (111), the vertical baffle (113) and the two vertical frames (4).

7. A laser cutting opening device for a large cylinder according to claim 6, characterized in that: The laser cutting opening device for a large cylinder also includes a roller (12), and a plurality of rollers (12) are rotatably connected to the bottom of the hanging plate (1).

8. A laser cutting opening device for a large cylinder according to claim 7, characterized in that: The laser cutting opening device for a large cylinder also includes a climbing frame (13), the climbing frame (13) is connected to the hanging plate (1), and the upper part of the climbing frame (13) is connected to the vertical frame (4).

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