Pipe clamping device of laser pipe cutting machine

Abstract

The utility model relates to a pipe clamping device of a laser pipe cutting machine, which comprises a pipe grabbing mechanism and a pipe centering mechanism, the pipe grabbing mechanism comprises two clamping jaws and a clamping jaw driving component, each clamping jaw is of a semi-frame-shaped structure, one end of each clamping jaw is hinged with the lower end of a material taking conveying arm, and the other end of each clamping jaw is a free end; the output end of the clamping jaw driving assembly is in driving connection with the two clamping jaws and used for driving the free ends of the two clamping jaws to be close to or away from each other. The pipe centering mechanism comprises two centering clamping plates and a clamping plate driving assembly, and the two centering clamping plates are of a long-strip-shaped structure and are arranged at the lower end of the material taking conveying arm in a sliding mode in the horizontal direction. The output end of the clamping plate driving assembly is in driving connection with the two centering clamping plates and used for driving the two centering clamping plates to get close to or get away from each other in the horizontal direction. According to the pipe clamping device, through cooperation of the pipe grabbing mechanism and the pipe centering mechanism, pipes of various specifications such as square pipes, rectangular pipes, round pipes and kidney-shaped pipes are grabbed, centered and positioned, and the whole machine is high in universality.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cutting equipment, in particular to a tube clamping device for a laser tube cutting machine. Background Art

[0002] An existing tube clamping device for a laser tube cutting machine includes a screw, a self-propelled motor, a first cylinder, a clamping cylinder and a clamping claw. The self-propelled motor is threadedly mounted on the screw, the top of the first cylinder is tightly connected to the bottom of the self-propelled motor, the output end of the first cylinder is fixedly mounted with a clamping claw cylinder, and the output end of the clamping claw cylinder is provided with a clamping claw. When feeding is required, the first cylinder is started, and the output end of the first cylinder drives the clamping claw cylinder to extend downward so that the clamping claw is close to the tube. Then the clamping claw cylinder is started, and the clamping claw cylinder controls the clamping claw to contract and clamp the tube. The defects and shortcomings of the tube clamping device are as follows: the versatility of the whole machine is poor, and it can only clamp square tubes and rectangular tubes, but not round tubes and waist-shaped tubes. Moreover, it can only clamp tubes with smaller diameters or widths, but not tubes with larger cross-sections.

[0003] Therefore, there is an urgent need to provide a tube clamping device for a laser tube cutting machine that has good versatility and can meet the clamping requirements of tubes of various specifications. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a tube clamping device for a laser tube cutting machine, which solves the technical problem that the existing tube clamping device for a laser tube cutting machine has poor versatility as a whole machine.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0008] The embodiment of the utility model provides a tube clamping device for a laser tube cutting machine, which is installed on a material picking and transporting arm of the laser tube cutting machine, and includes a tube grabbing mechanism and a tube centering mechanism. The tube grabbing mechanism is installed on one side of the material picking and transporting arm, and the tube centering mechanism is installed on the other side of the material picking and transporting arm opposite to the tube grabbing mechanism.

[0009] The pipe grabbing mechanism comprises two symmetrically arranged clamping jaws and a clamping jaw driving assembly. The clamping jaw is in a semi-frame structure, one end of which is hinged to the lower end of the material taking and transporting arm, and the other end is a free end. The output end of the clamping jaw driving assembly is connected to the two clamping jaws to drive the free ends of the two clamping jaws to approach each other to form a closed frame to grab the pipe, or to move away from each other to open the closed frame and release the pipe.

[0010] The pipe centering mechanism includes two symmetrically arranged centering clamps and a clamp driving assembly. The two centering clamps are in the form of long strips and are slidably arranged at the lower end of the material picking and transporting arm in the horizontal direction. The output end of the clamp driving assembly is connected to the two centering clamps to drive the two centering clamps to approach each other in the horizontal direction to center the pipes in the closed frame.

[0011] Optionally, the clamping jaw driving assembly includes a first telescopic cylinder, a first slider and two first connecting rods;

[0012] The material picking and transporting arm is equipped with the first telescopic cylinder above the clamping jaws, the movement direction of the first telescopic cylinder is vertical, and the first slider is equipped with the end of its piston rod, the first slider is hinged to one end of the two first connecting rods, and the other ends of the two first connecting rods are respectively hinged to the two clamping jaws.

[0013] Optionally, a first linear guide rail extending in a vertical direction is provided on the material picking and transporting arm, and the first sliding block is slidably matched with the first linear guide rail.

[0014] Optionally, a second linear guide rail extending in the horizontal direction is provided at the lower end of the material picking and transporting arm, two second sliding blocks are slidably mounted on the second linear guide rail, and two centering clamps are mounted on the two second sliding blocks in a one-to-one correspondence.

[0015] Optionally, the clamping plate driving assembly includes a second telescopic cylinder, a third slider and two second connecting rods;

[0016] The material picking and transporting arm is equipped with the second telescopic cylinder above the centering clamp, the movement direction of the second telescopic cylinder is vertical, and the third slider is installed at the end of its piston rod, the third slider is hinged to one end of the two second connecting rods, and the other ends of the two second connecting rods are respectively hinged to the two centering clamps.

[0017] Optionally, a third linear guide rail extending in a vertical direction is provided on the material picking and transporting arm, and the third sliding block is slidably matched with the third linear guide rail.

[0018] Optionally, the first telescopic cylinder and the second telescopic cylinder are pneumatic cylinders or hydraulic cylinders.

[0019] (III) Beneficial effects

[0020] The beneficial effects of the utility model are as follows: the tube gripping device of the laser tube cutting machine of the utility model comprises a tube gripping mechanism and a tube centering mechanism, the tube gripping mechanism comprises two symmetrically arranged clamping jaws and a clamping jaw driving assembly, the clamping jaw is a semi-frame structure, one end of which is hinged to the lower end of the material taking and transporting arm, and the other end is a free end; the output end of the clamping jaw driving assembly is connected to the two clamping jaws to drive the free ends of the two clamping jaws to approach each other to enclose a closed frame to grip the tube, or to move away from each other to open the closed frame to release the tube; the tube centering mechanism comprises two symmetrically arranged pairs of The center clamp and the clamp driving assembly, the two centering clamps are in the shape of long strips and are slidably arranged at the lower end of the material picking and transporting arm along the horizontal direction; the output end of the clamp driving assembly is connected to the two centering clamps to drive the two centering clamps to approach each other along the horizontal direction, and to center the pipes in the closed frame. Compared with the prior art, the pipe clamping device of the utility model, through the cooperation of the pipe grabbing mechanism and the pipe centering mechanism, can grab and center various pipes commonly used on the market, such as square pipes, rectangular pipes, round pipes, waist-shaped pipes, etc., and the whole machine has strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional diagram of the tube clamping device of the laser tube cutting machine of the utility model Figure 1 ;

[0022] Figure 2 A three-dimensional diagram of the tube clamping device of the laser tube cutting machine of the utility model Figure 2 .

[0023] [Description of Reference Numerals]

[0024] 1: material transport arm; 2: pipe grabbing mechanism; 3: pipe centering mechanism; 4: clamping claw; 5: centering clamp; 6: first telescopic cylinder; 7: first linear guide; 8: first slider; 9: first connecting rod; 10: second telescopic cylinder; 11: second linear guide; 12: second slider; 13: second connecting rod; 14: third linear guide; 15: third slider. DETAILED DESCRIPTION

[0025] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below in conjunction with the accompanying drawings through specific implementation methods. Figure 1 The orientation is used as a reference.

[0026] Reference Figure 1 and Figure 2 , Figure 1 A three-dimensional schematic diagram showing the tube clamping device of the laser tube cutting machine of this embodiment Figure 1 , Figure 2A three-dimensional schematic diagram showing the tube clamping device of the laser tube cutting machine of this embodiment Figure 2 .

[0027] The tube clamping device of the laser tube cutting machine of the present embodiment is installed on the material picking and transporting arm 1 of the laser tube cutting machine, and includes a tube grabbing mechanism 2 and a tube centering mechanism 3. The tube grabbing mechanism 2 is installed on one side of the material picking and transporting arm 1, and the tube centering mechanism 3 is installed on the other side of the material picking and transporting arm 1 opposite to the tube grabbing mechanism 2. The tube grabbing mechanism 2 and the tube centering mechanism 3 cooperate to grab and center the tube to be cut.

[0028] The pipe grabbing mechanism 2 includes a clamping jaw driving assembly and two symmetrically arranged clamping jaws 4. The clamping jaws 4 are in a semi-frame structure, one end of which is hinged to the lower end of the material picking and transporting arm 1, and the other end is a free end. The clamping jaw driving assembly is installed on the material picking and transporting arm 1, and its output end is connected to the two clamping jaws to drive the free ends of the two clamping jaws 4 to approach each other to form a closed frame to grab the pipe, or to move away from each other to open the closed frame and release the pipe.

[0029] The pipe centering mechanism 3 includes a clamping plate driving assembly and two symmetrically arranged centering clamps 5. The two centering clamps 5 are in the form of long strips and are slidably arranged at the lower end of the material picking and transporting arm 1 in the horizontal direction. The clamping plate driving assembly is installed on the material picking and transporting arm 1, and its output end is drivingly connected to the two centering clamps 5 to drive the two centering clamps 5 to approach each other in the horizontal direction, so as to center and position the pipe in the closed frame so that the axis of the pipe is parallel to the feeding direction of the laser pipe cutting machine.

[0030] Furthermore, the clamping jaw driving assembly includes a first telescopic cylinder 6, a first slider 8 and two first connecting rods 9. The first telescopic cylinder 6 is installed above the clamping jaw 4 on the material-retrieving and transporting arm 1. The movement direction of the first telescopic cylinder 6 is vertical, and the first slider 8 is installed at the end of its piston rod. The first slider 8 is hinged to one end of the two first connecting rods 9, and the other ends of the two first connecting rods 9 are hinged to the two clamping jaws 4 respectively.

[0031] When the piston rod of the first telescopic cylinder 6 is extended, the first slider 8 drives the first connecting rod 9 to move downward, and the first connecting rod 9 transmits the driving force to the two clamping jaws 4, so that the free ends of the two clamping jaws 4 approach each other and close to clamp the pipe to be cut. When the piston rod of the first telescopic cylinder 6 is retracted, the first slider 8 drives the first connecting rod 9 to move upward, and the first connecting rod 9 drives the two clamping jaws 4 to rotate along the fixed end, so that the free ends of the two clamping jaws 4 move away from each other, and open to release the pipe to be cut.

[0032] Furthermore, the material-retrieving and transporting arm 1 is provided with a first linear guide rail 7 extending in the vertical direction, and the first slider 8 is slidably matched with the first linear guide rail 7. The purpose of providing the first linear guide rail 7 is to guide the first slider 8, thereby improving the stability and accuracy of the movement of the two clamping jaws 4, and finally enabling the two clamping jaws 4 to stably switch between the closed state and the open state.

[0033] In this embodiment, a second linear guide rail 11 extending in the horizontal direction is provided at the lower end of the material taking and transporting arm 1 , two second sliders 12 are slidably mounted on the second linear guide rail 11 , and two centering clamps 5 are mounted on the two second sliders 12 in a one-to-one correspondence.

[0034] Furthermore, the clamping plate driving assembly specifically includes a second telescopic cylinder 10, a third slider 15 and two second connecting rods 13. The material-retrieving and transporting arm 1 is provided with a second telescopic cylinder 10 above the centering clamping plate 5, the movement direction of the second telescopic cylinder 10 is vertical, and a third slider 15 is provided at the end of its piston rod, the third slider 15 is hinged to one end of the two second connecting rods 13, and the other ends of the two second connecting rods 13 are respectively hinged to the two centering clamping plates 5.

[0035] When the piston rod of the second telescopic cylinder 10 retracts, the third slider 15 drives the second connection 13 to move upward, and the second connection 13 drives the two centering clamps 5 to approach each other along the second linear guide 11, thereby centering the pipe to be cut clamped by the two clamps 4; when the piston rod of the second telescopic cylinder 10 extends, the third slider 15 drives the second connection 13 to move downward, and the second connection 13 transmits the driving force to the two centering clamps 5, so that the two centering clamps 5 move away from each other along the second linear guide 11, and the centering positioning of the pipe to be cut is released.

[0036] Furthermore, the reclaiming and transporting arm 1 is provided with a third linear guide rail 14 extending in the vertical direction, and the third slider 15 is slidably matched with the third linear guide rail 14. The purpose of providing the third linear guide rail 14 is to guide the third slider 15, thereby improving the stability and accuracy of the movement of the two centering clamps 5.

[0037] In this embodiment, the first telescopic cylinder 6 and the second telescopic cylinder 10 may be air cylinders or hydraulic cylinders. Preferably, the first telescopic cylinder 6 and the second telescopic cylinder 10 are air cylinders.

[0038] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0039] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A tube gripping device for a laser tube cutting machine, mounted on a material taking and transporting arm (1) of the laser tube cutting machine, characterized in that: It comprises a pipe grabbing mechanism (2) and a pipe centering mechanism (3), wherein the pipe grabbing mechanism (2) is installed on one side of the material picking and transporting arm (1), and the pipe centering mechanism (3) is installed on the other side of the material picking and transporting arm (1) opposite to the pipe grabbing mechanism (2); The pipe grabbing mechanism (2) comprises two symmetrically arranged clamping jaws (4) and a clamping jaw driving assembly. The clamping jaw (4) is in a semi-frame structure, one end of which is hinged to the lower end of the material taking and transporting arm (1), and the other end is a free end. The output end of the clamping jaw driving assembly is drivingly connected to the two clamping jaws (4) to drive the free ends of the two clamping jaws (4) to move closer to each other to form a closed frame to grab the pipe, or to move away from each other to open the closed frame and release the pipe. The pipe centering mechanism (3) comprises two symmetrically arranged centering clamps (5) and a clamp driving assembly, wherein the two centering clamps (5) are in the form of long strips and are slidably arranged at the lower end of the material taking and transporting arm (1) in the horizontal direction; the output end of the clamp driving assembly is connected to the two centering clamps (5) for driving the two centering clamps (5) to approach each other in the horizontal direction so as to center and position the pipe in the closed frame.

2. The tube clamping device for a laser tube cutting machine according to claim 1, characterized in that: The clamping jaw driving assembly comprises a first telescopic cylinder (6), a first sliding block (8) and two first connecting rods (9); The material picking and transporting arm (1) is provided with the first telescopic cylinder (6) installed above the clamping jaw (4); the movement direction of the first telescopic cylinder (6) is vertical, and the first slider (8) is installed at the end of its piston rod; the first slider (8) is hinged to one end of the two first connecting rods (9); and the other ends of the two first connecting rods (9) are respectively hinged to the two clamping jaws (4).

3. The tube clamping device for the laser tube cutting machine according to claim 2, characterized in that: The material taking and transporting arm (1) is provided with a first linear guide rail (7) extending in a vertical direction, and the first sliding block (8) is slidably matched with the first linear guide rail (7).

4. The tube clamping device for a laser tube cutting machine according to claim 2, characterized in that: A second linear guide rail (11) extending in the horizontal direction is provided at the lower end of the material taking and transporting arm (1), two second sliding blocks (12) are slidably mounted on the second linear guide rail (11), and the two centering clamps (5) are mounted on the two second sliding blocks (12) in a one-to-one correspondence.

5. The tube clamping device for a laser tube cutting machine according to claim 4, characterized in that: The clamping plate driving assembly comprises a second telescopic cylinder (10), a third sliding block (15) and two second connecting rods (13); The material picking and transporting arm (1) is provided with the second telescopic cylinder (10) installed above the centering clamp (5); the movement direction of the second telescopic cylinder (10) is vertical, and the third slider (15) is installed at the end of its piston rod; the third slider (15) is hinged to one end of the two second connecting rods (13); and the other ends of the two second connecting rods (13) are respectively hinged to the two centering clamps (5).

6. The tube clamping device for a laser tube cutting machine according to claim 5, characterized in that: The material taking and transporting arm (1) is provided with a third linear guide rail (14) extending in a vertical direction, and the third sliding block (15) is slidably matched with the third linear guide rail (14).

7. The tube clamping device for a laser tube cutting machine according to claim 5, characterized in that: The first telescopic cylinder (6) and the second telescopic cylinder (10) are pneumatic cylinders or hydraulic cylinders.

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