Laser tube cutting machine clamping device and method
By designing vertical cross clamping assembly and cylinder-driven clamping device in the laser pipe cutting machine, the problem of low clamping accuracy of traditional laser pipe cutting machines is solved, stable and precise clamping of pipes is achieved, and cutting efficiency is improved and product quality.
Patent Information
- Application Number
- CN202410763659.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2044-06-14
AI Technical Summary
Traditional laser pipe cutting machines have low clamping accuracy, large cutting errors and low cutting efficiency, which makes it difficult to cut pipes.
Design a laser pipe cutting machine clamping device including a base, clamping module and driving module, adopts clamping components and cylinders arranged vertically and intersect each other, and realizes stable and precise clamping of the processed pipe fittings through four-way clamping method. hold.
It improves the stability and accuracy of clamping, simplifies the pipe cutting operation steps, improves the degree of automation and production efficiency, and improves product quality.
Smart Images
Figure CN118342137B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of laser cutting equipment, and in particular to a clamping device and method for a laser tube cutting machine. Background Art
[0002] Laser cutting uses a focused high-power density laser beam to irradiate the workpiece, causing the irradiated material to quickly melt, vaporize, ablate or reach the ignition point, and at the same time uses a high-speed airflow coaxial with the beam to blow away the molten material, thereby cutting the workpiece.
[0003] Laser tube cutting machine is a subcategory of laser cutting machine, which is a special equipment for tube cutting. Tube-type workpieces usually have a large aspect ratio, which makes positioning and adjustment difficult, resulting in low clamping accuracy, large cutting error and low cutting efficiency of traditional laser tube cutting machines. Summary of the invention
[0004] In order to overcome the problems of "low clamping accuracy, large cutting error and low cutting efficiency of traditional laser tube cutting machines" existing in the above-mentioned background technology, the present invention provides a clamping device and method for a laser tube cutting machine.
[0005] The technical solution adopted by the present invention to solve the above technical problems is:
[0006] A clamping device for a laser tube cutting machine comprises a base, a clamping module and a driving module; the base is provided with a receiving groove for accommodating a processed pipe fitting, and the clamping module is arranged at the edge of the receiving groove; the clamping module comprises two clamping assemblies arranged perpendicularly and crosswise to each other; the clamping assembly comprises a first clamping claw and a second clamping claw; a first connecting column is connected below the first clamping claw; a first connecting piece is connected to the bottom of the first connecting column, and a first guide rail is connected to the bottom of the first connecting piece; a second connecting column is connected below the second clamping claw; a second connecting piece is connected to the bottom of the second connecting column, and a second guide rail is connected to the bottom of the second connecting piece; the driving module comprises a cylinder, the first guide rail is connected to the cylinder, and the second guide rail is connected to the cylinder; the cylinder is fixedly installed inside the base.
[0007] A laser tube cutting machine clamping method adopts a laser tube cutting machine clamping device to clamp a processed tube, and the roller assembly adopts a four-way clamping method to limit the clamping of the processed tube.
[0008] As a further optimization solution of the present invention, the inner wall of the first clamping claw and the inner wall of the second clamping claw are respectively provided with roller shaft assemblies.
[0009] As a further optimization solution of the present invention, the roller assembly includes a first roller and a second roller that can rotate independently; the first roller and the second roller are arranged in a convex shape.
[0010] As a further optimization scheme of the present invention, the first roller shaft includes a first shaft cylinder, a first support shaft, a first bearing and a first support block; the first shaft cylinder is sleeved on the surface of the first support shaft and is rotatably connected through the first bearing; two first support blocks are provided, and the two first support blocks are sleeved on both ends of the first support shaft and fixedly connected.
[0011] As a further optimization scheme of the present invention, the second roller shaft includes a second shaft cylinder, a second support shaft, a second bearing and a second support block; the second shaft cylinder is sleeved on the surface of the second support shaft and is rotatably connected through the second bearing; four second support blocks are provided, two of which are sleeved on both ends of the second support shaft and fixedly connected, and the other two second support blocks are sleeved in the middle of the second support shaft.
[0012] As a further optimization scheme of the present invention, the first shaft cylinder is a single-section cylinder structure, and the second shaft cylinder is a three-section cylinder structure; the three-section cylinders are respectively arranged between four second support blocks; and the three cylinder bodies of the three-section cylinder can rotate independently.
[0013] As a further optimization scheme of the present invention, a first retraction groove is provided between the first support block and the first shaft cylinder, and a second retraction groove is provided between the second support block and the second shaft cylinder; the first retraction groove is located within the upper projection range of the edge of the second shaft cylinder, and the second retraction groove is located within the lower projection range of the edge of the first shaft cylinder.
[0014] As a further optimization solution of the present invention, the axes of adjacent roller assemblies are perpendicular to each other.
[0015] As a further optimization solution of the present invention, the movement directions of adjacent roller assemblies are perpendicular to each other.
[0016] In summary, the benefits of the present invention lie in: a clamping device for a laser tube cutting machine, comprising a base, a clamping module and a driving module; the base is provided with a receiving slot for receiving the processed tube, and the clamping module is arranged at the edge of the receiving slot; the clamping module comprises two clamping assemblies arranged perpendicularly and crosswise to each other; the clamping assembly comprises a first clamping claw and a second clamping claw; a first connecting column is connected below the first clamping claw; a first connecting piece is connected to the bottom of the first connecting column, and a first guide rail is connected to the bottom of the first connecting piece; a second connecting column is connected below the second clamping claw; a second connecting piece is connected to the bottom of the second connecting column, and a second guide rail is connected to the bottom of the second connecting piece; the driving module comprises a cylinder. The present invention has a simple structure and reliable functions, and can realize convenient, stable and precise clamping of the processed tube by means of the clamping assemblies arranged perpendicularly and crosswise to each other, thereby simplifying the operation steps during the tube cutting operation, improving the degree of automation, and improving production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The present application is further described below with reference to the accompanying drawings:
[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0019] Figure 2 It is a schematic diagram of the clamping module structure;
[0020] Figure 3 is a schematic diagram of the structure of the first clamping claw;
[0021] Figure 4 It is a schematic diagram of the structure of the roller assembly;
[0022] Figure 5 is a schematic diagram of the cross-sectional structure of the first roller;
[0023] Figure 6 is a schematic diagram of the cross-sectional structure of the second roller;
[0024] Figure 7 It is a schematic diagram of the structures of the second shaft cylinder a, the second shaft cylinder b and the second shaft cylinder c;
[0025] Figure 8 It is a schematic diagram of the structure of the roller assembly when viewed from above;
[0026] Fig. 9 It is a schematic diagram of the enlarged structure of the roller assembly when viewed from above;
[0027] Fig.10 It is a schematic diagram of the connection structure between the first clamping claw, the second clamping claw and the cylinder;
[0028] Fig.11 It is a schematic diagram of the connection structure between the first connecting column, the second connecting column and the cylinder;
[0029] Fig.12 It is a schematic diagram of the position and structure of the first push plate and the first guide groove;
[0030] Fig.13 It is a schematic diagram of the structure of the roller assembly clamping the processed pipe;
[0031] Fig.14 It is a schematic diagram of the movement direction of the roller assembly;
[0032] Fig.15 It is a top view schematic diagram of the position and structure of the gear, the first rack and the second rack;
[0033] Fig.16 It is a vertical sectional side view of the connection structure of the first connection column and the first connection member;
[0034] Fig.17It is a vertical sectional side view of the connection structure of the second connecting column and the second connecting member.
[0035] Description of reference numerals:
[0036] In the figure, 1, clamping module; 11, clamping assembly; 110, roller assembly; 11010, first retraction groove; 1101, first roller; 11011, first shaft cylinder; 11012, first support shaft; 11013, first bearing; 11014, first support block; 1102, second roller; 11020, second retraction groove; 11021, second shaft cylinder; 11022, second support shaft; 11023, second bearing; 11024, second support block; 111, first clamping claw; 112, second clamping claw; 113, first connecting column; 1131, first abutting hole; 114, second connecting column; 1141, second abutting hole; 115, 1st connecting member; 1151, first push plate; 1152, first screw hole; 1153, first screw rod; 1154, first mounting groove; 1155, first extrusion block; 1156, first extrusion groove; 116, second connecting member; 1162, second screw hole; 1163, second screw rod; 1164, second mounting groove; 1165, second extrusion block; 1166, second extrusion groove; 117, first guide rail; 118, second guide rail; 119, gear; 1190, positioning sleeve; 1191, first rack; 1192, second rack; 2, driving module; 21, cylinder; 211, first guide groove; 212, second guide groove; 3, base; 31, receiving through groove;
[0037] 11021a, second shaft cylinder a; 11021b, second shaft cylinder b; 11021c, second shaft cylinder c. DETAILED DESCRIPTION
[0038] Based on the above structural features of the present application, the implementation methods of the present application are further described:
[0039] Reference Figure 1 to Figure 3 and Fig.10 This embodiment provides a clamping device for a laser tube cutting machine, comprising a base 3, a clamping module 1 and a driving module 2. The base 3 is a shell-shaped disc structure, the driving module 2 is fixedly installed in the base 3 by bolts, the clamping module 1 is connected to the driving module 2, and the driving module 2 can drive the clamping module 1 to move to achieve the clamping function.
[0040] Reference Figure 1 and Figure 2The base 3 is provided with a receiving slot 31 for receiving the processed pipe, and the receiving slot 31 is located at the center of the disc-shaped base 3; when the processed pipe passes through the base 3 through the receiving slot 31, the driving module 2 drives the clamping module 1 to clamp the processed pipe. The clamping module 1 is arranged at the edge of the receiving slot 31; the clamping module 1 includes two clamping assemblies 11 arranged perpendicularly and crosswise to each other.
[0041] Reference Figure 1 to Figure 3 The clamping assembly 11 includes a first clamping claw 111 and a second clamping claw 112. The first clamping claw 111 is U-shaped or C-shaped, and the second clamping claw 112 is U-shaped or C-shaped. The edges of the first clamping claw 111 and the second clamping claw 112 can be interlocked to form a closed loop. Under the drive of the driving module 2, the first clamping claw 111 and the second clamping claw 112 can move relative to each other to achieve clamping and loosening actions. The first clamping claw 111 and the second clamping claw 112 that are interlocked in a closed loop can be used to prevent the processed pipe from escaping and improve the clamping stability. A first connecting column 113 is connected below the first clamping claw 111; a first connecting member 115 is connected to the bottom of the first connecting column 113, and a first guide rail 117 is connected to the bottom of the first connecting member 115; a second connecting column 114 is connected to the bottom of the second clamping claw 112; a second connecting member 116 is connected to the bottom of the second connecting column 114, and a second guide rail 118 is connected to the bottom of the second connecting member 116. The two clamping assemblies 11 are arranged in an upper and lower position, and the clamping assembly 11 at the upper position is supported by a first connecting column 113 with a greater height, and the clamping assembly 11 at the lower position is supported by a first connecting column 113 with a smaller height; for example, if the thickness of the first clamping claw 111 and the thickness of the second clamping claw 112 are both 5 cm, then when the height difference between the first connecting column 113 of the clamping assembly 11 at the upper position and the first connecting column 113 of the clamping assembly 11 at the lower position is more than 5 cm, the two clamping assemblies 11 can move independently without colliding with each other. The first clamping claw 111 is provided with a first connecting column 113 of the same height at both ends, and the second clamping claw 112 is provided with a second connecting column 114 of the same height at both ends, so as to ensure that the left and right ends of the first clamping claw 111 are flush with each other, and the left and right ends of the second clamping claw 112 are flush with each other. The first connecting column 113 and the second connecting column 114 in the same clamping assembly 11 are of equal height to ensure that the first clamping claw 111 and the second clamping claw 112 in the same clamping assembly 11 are flush with each other, so that the first clamping claw 111 and the second clamping claw 112 in the same clamping assembly 11 can clamp the edge position of the same cross section of the processed pipe to avoid clamping eccentric load, thereby improving clamping stability.
[0042] The driving module 2 includes four cylinders 21, and the adjacent cylinders 21 are arranged perpendicular to each other, and the four cylinders 21 are arranged in a regular quadrilateral. A cylinder 21 is arranged at the left and right ends of the same clamping assembly 11, and the cylinder 21 is a bidirectional cylinder 21.
[0043] Reference Figure 2 , Fig.10 and Fig.11 , the first guide rail 117 is connected to the cylinder 21, and the second guide rail 118 is connected to the cylinder 21. The first guide rail 117 is fixedly installed at the edge of the top surface of the cylinder 21 by bolts, and the second guide rail 118 is fixedly installed at the edge of the other side of the top surface of the cylinder 21 by bolts, and the first guide rail 117 and the second guide rail 118 are arranged parallel to each other. The cross section of the first guide rail 117 is in the shape of an I-beam, and a first sliding block with a C-shaped cross section is arranged on the first guide rail 117, and the first guide rail 117 is connected to the first connecting member 115 through the first sliding block, and the top surface of the first sliding block is fixedly connected to the first connecting member 115 by bolts; the cross section of the second guide rail 118 is in the shape of an I-beam, and a second sliding block with a C-shaped cross section is arranged on the second guide rail 118, and the second guide rail 118 is connected to the second connecting member 116 through the second sliding block, and the top surface of the second sliding block is fixedly connected to the first connecting member 115 by bolts. The first clamping claw 111, the first connecting column 113, the first connecting member 115 and the first slider can slide back and forth freely along the length direction of the first guide rail 117 synchronously, and the second clamping claw 112, the second connecting column 114, the second connecting member 116 and the second slider can slide back and forth freely along the length direction of the second guide rail 118 synchronously.
[0044] Reference Fig.11 and Fig.12The top surface of the cylinder 21 is provided with a first guide groove 211 and a second guide groove 212. The first guide groove 211 is provided inside the first guide rail 117, and the second guide groove 212 is provided inside the second guide rail 118. A first push plate 1151 is fixedly connected to the lower surface of the first connecting member 115. The first push plate 1151 is vertically arranged with the lower surface of the first connecting member 115, and the first push plate 1151 is vertically arranged; the first push plate 1151 is placed in the first guide groove 211 and connected to the first output shaft in the first guide groove 211; the first output shaft is used to push the first push plate 1151 to move, and further push the first connecting member 115 to move. A second push plate is fixedly connected to the lower surface of the second connecting member 116. The second push plate is vertically arranged with the lower surface of the second connecting member 116, and the second push plate is vertically arranged; the second push plate is placed in the second guide groove 212 and connected to the second output shaft in the second guide groove 212; the second output shaft is used to push the second push plate to move, and further push the second connecting member 116 to move. At least two air chambers are provided in a single cylinder 21, and moving pistons are provided in the two air chambers respectively. The two moving pistons are connected to the first output shaft and the second output shaft respectively; the two moving pistons push the first output shaft and the second output shaft to move independently. The cylinder 21 is fixedly mounted on the bottom surface of the base 3 by bolts.
[0045] The first guide groove 211 is arranged in parallel with the first guide rail 117 , and the first output shaft is arranged in parallel with the first guide groove 211 ; the second guide groove 212 is arranged in parallel with the second guide rail 118 , and the second output shaft is arranged in parallel with the second guide groove 212 , so as to ensure the reliability of transmission.
[0046] Reference Fig.11 and Fig.12 The first slider and the first push plate 1151 are both connected to the lower surface of the first connecting member 115. The first slider is the main load-bearing structure to prevent the first connecting member 115 from bending the first output shaft; the second slider and the second push plate are both connected to the lower surface of the second connecting member 116. The second slider is the main load-bearing structure to prevent the second connecting member 116 from bending the second output shaft, thereby ensuring structural stability and transmission smoothness.
[0047] Reference Figure 10 to Figure 12 The first push plate 1151 and the first connecting column 113 are respectively arranged at the left and right ends of the first connecting member 115, and the second push plate and the second connecting column 114 are respectively arranged at the left and right ends of the second connecting member 116, so that the cylinder 21 drives the first clamping claw 111 and the second clamping claw 112 in the form of pulling force to realize the clamping action, thereby improving the clamping stability.
[0048] Reference Figure 2 , Figure 3 and Fig.10The first clamping claw 111, the first connecting member 115 and the first guide rail 117 are arranged in a stepped shape, and the second clamping claw 112, the second connecting member 116 and the second guide rail 118 are arranged in a stepped shape, so that the present invention has a good operating space during early assembly and later maintenance, and realizes convenient operation.
[0049] Reference Figure 2 to Figure 4 The inner wall of the first clamping claw 111 and the inner wall of the second clamping claw 112 are respectively provided with a roller assembly 110; the clamping module 1 includes two clamping assemblies 11, and a total of four roller assemblies 110 are provided. The roller assembly 110 includes a first roller 1101 and a second roller 1102 that can rotate independently; the first roller 1101 and the second roller 1102 are arranged in a convex shape.
[0050] Reference Figure 4 and Figure 5 The first roller shaft 1101 includes a first shaft cylinder 11011, a first support shaft 11012, a first bearing 11013 and a first support block 11014; the first shaft cylinder 11011 is sleeved on the surface of the first support shaft 11012 and is rotatably connected through the first bearing 11013; the first shaft cylinder 11011 is in the shape of a straight cylinder with openings at both ends, and the first bearing 11013 is installed at both ends of the inner cavity of the first shaft cylinder 11011; there are two first support blocks 11014, and the two first support blocks 11014 are respectively sleeved on both ends of the first support shaft 11012 and fixedly connected (for example, fixed by cold shrinkage, fixed by radial bolts, etc.).
[0051] Reference Figure 4 and Figure 6 The second roller 1102 includes a second shaft cylinder 11021, a second support shaft 11022, a second bearing 11023 and a second support block 11024; the second shaft cylinder 11021 is sleeved on the surface of the second support shaft 11022 and is rotatably connected through the second bearing 11023; the second shaft cylinder 11021 is in the shape of a straight cylinder with openings at both ends, and the second bearing 11023 is installed at both ends of the inner cavity of the second shaft cylinder 11021; there are four second support blocks 11024, two of which are sleeved on both ends of the second support shaft 11022 and fixedly connected, and the other two second support blocks 11024 are sleeved in the middle of the second support shaft 11022.
[0052] When the roller assembly 110 is connected to the first clamping claw 111, the first support block 11014 is fixedly connected to the inner wall of the first clamping claw 111 by bolts, and the second support block 11024 is fixedly connected to the inner wall of the first clamping claw 111 by bolts; when the roller assembly 110 is connected to the second clamping claw 112, the first support block 11014 is fixedly connected to the inner wall of the second clamping claw 112 by bolts, and the second support block 11024 is fixedly connected to the inner wall of the second clamping claw 112 by bolts. The outer wall of the first clamping claw 111 is provided with a countersunk hole for installing the first support block 11014 and the second support block 11024, and the outer wall of the second clamping claw 112 is provided with a countersunk hole for installing the first support block 11014 and the second support block 11024.
[0053] Reference Figure 4 , the first roller 1101 is located above the second roller 1102 .
[0054] Reference Figure 5 to Figure 7 , the first shaft cylinder 11011 is a single-section cylinder structure, and the second shaft cylinder 11021 is a three-section cylinder structure; the three-section cylinders are respectively arranged between the four second support blocks 11024; the three cylinder bodies of the three-section cylinder can rotate independently. The three-section cylinders are respectively the second shaft cylinder a11021a, the second shaft cylinder b11021b and the second shaft cylinder c11021c, which are equal in diameter and coaxially arranged. In the same roller assembly 110, the left end of the first shaft cylinder 11011 is located on the left side of the left end of the second shaft cylinder b11021b, the right end of the first shaft cylinder 11011 is located on the right side of the right end of the second shaft cylinder b11021b, and the second shaft cylinder b11021b is located within the upper projection range of the first shaft cylinder 11011. The diameters of the first shaft cylinder 11011 and the second shaft cylinder b11021b are equal, and the distance between the first shaft cylinder 11011 and the center line of the accommodating groove 31 is equal to the distance between the second shaft cylinder b11021b and the center line of the accommodating groove 31, so that during the clamping action, the side wall of the second shaft cylinder 11021 and the side wall of the first shaft cylinder 11011 simultaneously contact the outer surface of the processed pipe, thereby achieving joint load-bearing and reducing wear, so as to increase the service life of the present invention.
[0055] Reference Figures 5 to 9A first retraction groove 11010 is provided between the first support block 11014 and the first shaft cylinder 11011, and a second retraction groove 11020 is provided between the second support block 11024 and the second shaft cylinder 11021; the first retraction groove 11010 is located within the upper projection range of the edge of the second shaft cylinder 11021, and the second retraction groove 11020 is located within the lower projection range of the edge of the first shaft cylinder 11011. The first retraction groove 11010 is used to prevent the processed pipe from hitting the first support block 11014 during the clamping action, and the second retraction groove 11020 is used to prevent the processed pipe from hitting the second support block 11024 during the clamping action, thereby reducing impact damage, increasing the service life of the present invention, and protecting the processed pipe.
[0056] Reference Fig.13 A clamping method for a laser tube cutting machine, wherein a clamping device of a laser tube cutting machine is used to clamp the processed tube, and a roller assembly 110 is used to clamp the processed tube in a four-way clamping manner; the axes of adjacent roller assemblies 110 are perpendicular to each other. The clamping module 1 includes two clamping assemblies 11 arranged perpendicular to each other, each clamping assembly 11 includes a first clamping claw 111 and a second clamping claw 112 arranged opposite to each other, and roller assemblies 110 are provided on the inner wall of the first clamping claw 111 and the inner wall of the second clamping claw 112, respectively, so that four rectangular, oblong or tic-tac-toe-shaped roller assemblies 110 can clamp and limit the processed tube together, so as to facilitate subsequent laser cutting and other processing operations.
[0057] Reference Fig.10 and Fig.14 The driving direction of the cylinder 21 is perpendicular to the length direction of the first clamping claw 111, and the driving direction of the cylinder 21 is perpendicular to the length direction of the second clamping claw 112, so that the movement directions of adjacent roller assemblies 110 are perpendicular to each other, further improving the stability of the clamping force of the roller assembly 110 on the processed pipe.
[0058] Reference Fig.15The lower surface of the first connecting member 115 is fixedly connected with a vertical first rack 1191 by bolts, and the lower surface of the second connecting member 116 is fixedly connected with a vertical second rack 1192 by bolts. The tooth structure of the first rack 1191 faces the second rack 1192, and the tooth structure of the second rack 1192 faces the first rack 1191. The upper surface of the cylinder 21 is installed with a gear 119 through a positioning sleeve 1190. The positioning sleeve 1190 is in an N shape. The lower end of the positioning sleeve 1190 is connected to the cylinder 21 by bolts. 21 is fixedly connected, the top of the positioning sleeve 1190 is rotatably connected to the gear 119 (for example, connected by a rotating bearing), and the two sides of the gear 119 are respectively meshed with the first rack 1191 and the second rack 1192, so that the first rack 1191 and the second rack 1192 can move in different directions and at the same speed, further controlling the first connecting member 115 and the second connecting member 116 to move in different directions and at the same speed, and the first clamping claw 111 and the second clamping claw 112 to move in different directions and at the same speed, thereby improving the transmission stability and clamping stability of the present invention. The first rack 1191 and the second rack 1192 are both spur racks, the first rack 1191 is arranged parallel to the first guide rail 117, and the second rack 1192 is arranged parallel to the second guide rail 118.
[0059] Reference Fig.16 The cross section of the first connecting column 113 is rectangular; the first connecting member 115 has a first mounting groove 1154 on its upper surface, the width of the first mounting groove 1154 is greater than the width of the first connecting column 113, and the bottom end of the first connecting column 113 is placed in the first mounting groove 1154. The first mounting groove 1154 has first screw holes 1152 and first extrusion grooves 1156 on both side walls, the first screw hole 1152 has a first screw rod 1153 installed in it through threaded matching, the first connecting column 113 has a first abutting hole 1131 on its side wall, one end of the first screw rod 1153 abuts in the first abutting hole 1131, and the other end surface of the first screw rod 1153 has a cross groove for tightening. The first extrusion groove 1156 has a first extrusion block 1155 installed in it, the side wall of the first extrusion block 1155 facing away from the first extrusion groove 1156 has a positioning protrusion, and the first connecting column 113 has a positioning groove adapted to the positioning protrusion. The first extrusion blocks 1155 are provided with several different widths. During installation, the staff selects the first extrusion blocks 1155 of appropriate width and places them in the first extrusion groove 1156, then inserts the bottom end of the first connecting column 113 into the first installation groove 1154, and finally screws the first screw 1153 into the first screw hole 1152 and abuts against the first abutment hole 1131. When the first connecting column 113 abuts against the first extrusion blocks 1155 of different widths, the relative positions of the first connecting column 113 and the first connecting member 115 are different, thereby achieving fine adjustment of the position of the first connecting column 113, and further achieving fine adjustment of the position of the first clamping claw 111, so as to improve the compatibility and fault tolerance of production installation.
[0060] Reference Fig.17 The cross section of the second connecting column 114 is rectangular; the second connecting member 116 has a second mounting groove 1164 on its upper surface, the width of the second mounting groove 1164 is greater than the width of the second connecting column 114, and the bottom end of the second connecting column 114 is placed in the second mounting groove 1164. The second mounting groove 1164 has a second screw hole 1162 and a second extrusion groove 1166 on both side walls, a second screw rod 1163 is installed in the second screw hole 1162 by threaded fit, a second abutting hole 1141 is formed on the side wall of the second connecting column 114, one end of the second screw rod 1163 abuts in the second abutting hole 1141, and a cross groove for tightening is formed on the other end surface of the second screw rod 1163. A second extrusion block 1165 is installed in the second extrusion groove 1166, a positioning protrusion is provided on the side wall of the second extrusion block 1165 away from the second extrusion groove 1166, and a positioning groove matching the positioning protrusion is provided on the second connecting column 114. The second extrusion blocks 1165 are provided with several different widths. During installation, the staff selects the second extrusion blocks 1165 of appropriate width and places them in the second extrusion groove 1166, then inserts the bottom end of the second connecting column 114 into the second installation groove 1164, and finally screws the second screw 1163 into the second screw hole 1162 and abuts against the second abutment hole 1141. When the second connecting column 114 abuts against the second extrusion blocks 1165 of different widths, the relative positions of the second connecting column 114 and the second connecting member 116 are different, thereby achieving fine adjustment of the position of the second connecting column 114, and further achieving fine adjustment of the position of the second clamping claw 112, so as to improve the compatibility and fault tolerance of production installation.
[0061] The present invention has a simple structure and reliable functions, and realizes convenient, stable and precise clamping of the processed pipe by means of mutually perpendicularly arranged clamping components, thereby simplifying the operation steps during the pipe cutting operation, improving the degree of automation, and improving production efficiency and product quality.
[0062] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.
[0063] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0064] To sum up, for those skilled in the art, according to the guidance of the present invention, without departing from the principles and spirit of the present invention, the changes, modifications, substitutions and deformations made to the present invention still fall within the protection scope of the present invention.
Claims
1. A clamping device for a laser tube cutting machine, characterized in that: It comprises a base (3), a clamping module (1) and a driving module (2); The base (3) is provided with a receiving groove (31) for receiving the processed pipe, and the clamping module (1) is arranged at the edge of the receiving groove (31); the clamping module (1) comprises two clamping assemblies (11) arranged perpendicularly to each other. The clamping assembly (11) comprises a first clamping claw (111) and a second clamping claw (112); a first connecting column (113) is connected below the first clamping claw (111); a first connecting member (115) is connected at the bottom of the first connecting column (113), and a first guide rail (117) is connected at the bottom of the first connecting member (115); a second connecting column (114) is connected below the second clamping claw (112); a second connecting member (116) is connected at the bottom of the second connecting column (114), and a second guide rail (118) is connected at the bottom of the second connecting member (116); The driving module (2) comprises a cylinder (21), the first guide rail (117) is connected to the cylinder (21), and the second guide rail (118) is connected to the cylinder (21); the cylinder (21) is fixedly mounted inside the base (3); The inner wall of the first clamping claw (111) and the inner wall of the second clamping claw (112) are respectively provided with a roller assembly (110); The roller assembly (110) comprises a first roller (1101) and a second roller (1102) that are capable of rotating independently; The first roller shaft (1101) comprises a first shaft cylinder (11011), a first support shaft (11012), a first bearing (11013) and a first support block (11014); the first shaft cylinder (11011) is sleeved on the surface of the first support shaft (11012) and is rotatably connected via the first bearing (11013); two first support blocks (11014) are provided, and the two first support blocks (11014) are sleeved on both ends of the first support shaft (11012) and are fixedly connected; The second roller shaft (1102) comprises a second shaft cylinder (11021), a second support shaft (11022), a second bearing (11023) and a second support block (11024); the second shaft cylinder (11021) is sleeved on the surface of the second support shaft (11022) and is rotatably connected via the second bearing (11023); four second support blocks (11024) are provided, two of which are sleeved on both ends of the second support shaft (11022) and fixedly connected, and the other two second support blocks (11024) are sleeved on the middle of the second support shaft (11022); The first shaft cylinder (11011) is a single-section cylinder structure, and the second shaft cylinder (11021) is a three-section cylinder structure; the three-section cylinders are respectively arranged between two of the four second support blocks (11024); the three cylinder bodies of the three-section cylinder can rotate independently; The first clamping claw (111) is U-shaped or C-shaped, the second clamping claw (112) is U-shaped or C-shaped, and the two side edges of the first clamping claw (111) and the second clamping claw (112) can be buckled with each other to form a closed loop; The two clamping assemblies (11) are arranged in an upper and lower position, the clamping assembly (11) at the upper position uses the first connecting column (113) with a greater height for position support, and the clamping assembly (11) at the lower position uses the first connecting column (113) with a smaller height for position support; the first connecting column (113) and the second connecting column (114) in the same clamping assembly (11) are of equal height; At least two air chambers are provided in a single cylinder (21), and movable pistons are provided in the two air chambers respectively, and the two movable pistons are connected to the first output shaft and the second output shaft respectively; a first push plate (1151) is fixedly connected to the lower surface of the first connecting member (115), and a second push plate is fixedly connected to the lower surface of the second connecting member (116); the first push plate (1151) is connected to the first output shaft, and the second push plate is connected to the second output shaft; the first push plate (1151) and the first connecting column (113) are respectively arranged at the left and right ends of the first connecting member (115), and the second push plate and the second connecting column (114) are respectively arranged at the left and right ends of the second connecting member (116), so that the cylinder (21) drives the first clamping claw (111) and the second clamping claw (112) in the form of pulling force to realize the clamping action; The first connecting member (115) has an upper surface with a first mounting groove (1154), and the bottom end of the first connecting column (113) is placed in the first mounting groove (1154); the first mounting groove (1154) has two side walls with a first screw hole (1152) and a first extrusion groove (1156), and the first screw hole (1152) is threadedly mounted with a first screw rod (1153); the side wall of the first connecting column (113) has a first abutment hole (1131), and the first screw rod (1153) is disposed on the first side wall of the first connecting column (113). One end of the first screw rod (1153) is abutted in the first abutting hole (1131), and a cross groove for tightening is provided on the other end surface of the first screw rod (1153); a first extrusion block (1155) is installed in the first extrusion groove (1156), a positioning protrusion is provided on the side wall of the first extrusion block (1155) away from the first extrusion groove (1156), and the first connecting column (113) is provided with a positioning groove adapted to the positioning protrusion; the first extrusion block (1155) is provided with a plurality of protrusions with different widths; A second mounting groove (1164) is provided on the upper surface of the second connecting member (116), and the bottom end of the second connecting column (114) is placed in the second mounting groove (1164); second screw holes (1162) and second extrusion grooves (1166) are respectively provided on the two side walls of the second mounting groove (1164), and a second screw rod (1163) is installed in the second screw hole (1162) through threaded engagement; a second abutment hole (1141) is provided on the side wall of the second connecting column (114), and the second screw rod (1163) is provided on the side wall of the second connecting column (114). One end of the second screw rod (1163) abuts against the second abutting hole (1141), and a cross groove for tightening is provided on the other end surface of the second screw rod (1163); a second extrusion block (1165) is installed in the second extrusion groove (1166), and a positioning protrusion is provided on the side wall of the second extrusion block (1165) away from the second extrusion groove (1166), and the second connecting column (114) is provided with a positioning groove adapted to the positioning protrusion; the second extrusion block (1165) is provided with a plurality of protrusions with different widths.
2. The clamping device for a laser tube cutting machine according to claim 1, characterized in that: The first roller (1101) and the second roller (1102) are arranged in a convex shape.
3. The clamping device for a laser tube cutting machine according to claim 2, characterized in that: A first retraction groove (11010) is provided between the first support block (11014) and the first shaft cylinder (11011), and a second retraction groove (11020) is provided between the second support block (11024) and the second shaft cylinder (11021); the first retraction groove (11010) is located within the upper projection range of the edge of the second shaft cylinder (11021), and the second retraction groove (11020) is located within the lower projection range of the edge of the first shaft cylinder (11011).
4. A clamping method for a laser tube cutting machine, characterized in that: The laser tube cutting machine clamping device according to claim 3 is used to clamp the processed tube, and the roller assembly (110) uses a four-way clamping method to limit the clamping of the processed tube.
5. The clamping method of the laser tube cutting machine according to claim 4, characterized in that: The axes of adjacent roller shaft assemblies (110) are perpendicular to each other.
6. The clamping method of the laser tube cutting machine according to claim 5, characterized in that: The movement directions of adjacent roller shaft assemblies (110) are perpendicular to each other.