Adjustable laser welding platform

Abstract

The invention discloses an adjustable laser welding platform, and relates to the technical field of laser welding. The device comprises a base, a workpiece seat is arranged on the base, a left clamp seat and a right clamp seat are arranged on the base on the left side and the right side of the workpiece seat respectively, a rotary drum connected with a motor connected with one end of the clamp seat is arranged on each clamp seat, at least two clamps are arranged in the circumferential direction of each rotary drum, and communicated air exhaust channels are formed in the clamping faces of the rotary drums and the clamps; an exhaust pipe connected with the negative pressure pump is arranged in the rotary drum, and a pipe opening of the exhaust pipe can be in butt joint with an inner end opening of the exhaust channel; and at least one of the left clamp seat and the right clamp seat is connected with a moving mechanism. The left clamp base and the right clamp base are arranged, four clamps are arranged on the two clamp bases, workpieces in different shapes can be clamped, the clamps can be switched through the motor before the workpieces are clamped, and operation is convenient and fast.

Description

Technical Field

[0001] This invention relates to an adjustable laser welding platform, and pertains to the field of laser welding technology. Background Technology

[0002] When performing laser welding on workpieces, it is necessary to do so on a welding platform. Existing welding platform fixtures have a fixed shape. When clamping workpieces of different shapes, the contact surfaces between the workpiece and the fixture cannot fit together, which makes it impossible to effectively fix the workpiece, reduces the stability of the workpiece during the welding process, and affects the welding quality. Summary of the Invention

[0003] The purpose of this invention is to design an adjustable laser welding platform that is adaptable to a variety of workpieces.

[0004] The present invention includes a base, a workpiece seat on the base, a left clamp seat and a right clamp seat on the left and right sides of the base respectively, a rotating drum connected to a motor connected to one end of each clamp seat, at least two clamps arranged along the circumference of the rotating drum, and a communicating air extraction channel provided on the clamping surfaces of the rotating drum and the clamps; an air extraction pipe connected to a negative pressure pump is provided inside the rotating drum, and the port of the air extraction pipe can be connected to the inner port of the air extraction channel; at least one of the left clamp seat and the right clamp seat is connected to a moving mechanism.

[0005] Furthermore, a rubber pad is provided on the clamping surface of the fixture, and the air extraction channel passes through the rubber pad.

[0006] Furthermore, the port of the suction pipe is funnel-shaped, and the size of its opening is larger than the diameter of the port inside the suction channel.

[0007] Furthermore, each clamping seat has four clamps with clamping surfaces that are respectively curved, flat, V-shaped, and square.

[0008] Furthermore, the base is provided with inwardly protruding stepped guide rails on its front and rear sides, and at least one workpiece seat is placed on the stepped guide rail.

[0009] Furthermore, the negative pressure pump is located at the rear of the rotating drum. It is connected to the air distribution valve inside the rotating drum through the main air extraction pipe. Each air extraction branch pipe connected to the air distribution valve can be connected to the air extraction channel of each clamp.

[0010] Furthermore, at least three or four clamps are evenly arranged on the circumference of the rotating drum, and a positive and negative lead screw connected to the motor is provided on the base. The lower parts of the left clamp seat and the right clamp seat are respectively connected to the positive lead part and the negative lead part of the positive and negative lead screw.

[0011] This invention features a left clamping base and a right clamping base, with four types of clamps on the two bases, capable of clamping workpieces of different shapes. The clamps can be switched via a motor before clamping the workpiece, making operation convenient. Each clamp in this invention is equipped with an air extraction channel, allowing a negative pressure pump to adsorb and fix the workpiece through the air extraction channel during use, improving the stability of the workpiece after fixation. Attached Figure Description

[0012] Figure 1 This is a front sectional view of an embodiment of the present invention; Figure 2 for Figure 1 Enlarged view of part A in the middle; Figure 3 for Figure 1 Cross-sectional view along the BB direction; Figure 4 for Figure 3 A magnified view of a section at point C; The components are as follows: 1. Base, 2. Stepped surface guide rail, 3. Workpiece seat, 4. Gear motor, 5. Positive and negative lead screws, 6. Left clamp seat, 7. Right clamp seat, 8. Servo motor, 9. Rotary drum, 10. Clamp, 11. Negative pressure pump, 12. Main air extraction pipe, 13. Air distribution valve, 14. Air extraction branch pipe, 15. Air extraction channel, 16. Rubber pad, 17. Guide rod, 18. Rubber plug. Detailed Implementation

[0013] by Figure 1 Define the up, down, left, right, front, and back directions in this embodiment.

[0014] As shown in the figure, this embodiment includes a base 1 with an open upper part. Stepped guide rails 2 are provided on both the front and rear sides of the base 1. The stepped guide rails 2 protrude inward from the inner wall of the upper base 1, and their lower ends are fixedly mounted on the base 1. Workpiece seats 3 are provided on the two stepped guide rails 2. The end connectors of the workpiece seats 3 are snapped into the stepped guide rails 2, allowing for easy assembly and disassembly. They can slide left and right along the stepped guide rails 2. In use, an appropriate number of workpiece seats 3 can be installed according to the workpiece size. The upper surface of the workpiece seat 3 is an arc-shaped groove, allowing the placed workpiece to slide along the arc groove into the workpiece seat 3, achieving automatic centering of the workpiece.

[0015] A reduction motor 4 is installed at the right end of the base 1. The rotation axis of the reduction motor 4 extends to the right and passes through the base 1. A positive and negative lead screw 5 is connected in the base 1. Both ends of the positive and negative lead screw 5 are rotatably connected to the base 1. When in use, starting the reduction motor 4 can control the rotation of the positive and negative lead screw 5. A left clamp seat 6 and a right clamp seat 7 are installed above the positive and negative lead screw 5. The two clamp seats are respectively set on the left and right sides of the workpiece seat 3. The lower ends of the two clamp seats are screwed to the positive and negative lead screw 5. The left clamp seat 6 is screwed to the positive lead portion of the positive and negative lead screw 5, and the right clamp seat 7 is screwed to the negative lead portion of the positive and negative lead screw 5. Guide rods 17 parallel to the positive and negative lead screw 5 are installed on the front and rear sides of the positive and negative lead screw 5. Both ends of the guide rods 17 are fixedly connected to the inner wall of the base 1, and the middle smooth rod portion is slidably connected to the two clamp seats. When in use, starting the reduction motor 4 can control the two clamp seats to move in opposite directions.

[0016] A servo motor 8 is fixedly mounted on the upper rear side of each fixture seat. The rotating shaft of the servo motor 8 extends forward and is fixedly connected to one end of the rotating cylinder 9 on each fixture seat. The other end of the rotating cylinder 9 is rotatably connected to the inner wall of its fixture seat. The rotation of the rotating cylinder 9 is controlled by the servo motor 8. Fixtures 10 are arranged along the circumference of the rotating cylinder 9. In this embodiment, four fixtures 10 are provided. Each fixture 10 is fixedly connected to the circumferential surface of the rotating cylinder 9 and is evenly arranged along the circumference of the rotating cylinder 9. The clamping surfaces of each fixture 10 are arc-shaped, flat, V-shaped, and square tube, respectively. The arc-shaped fixture is used to clamp tubular workpieces, the flat fixture is used to clamp workpieces with planar structures, the V-shaped fixture is used to clamp angle steel workpieces, and the square tube fixture is used to clamp irregularly shaped workpieces with grooves. In use, the fixtures 10 on two fixture seats can be used in conjunction with each other. The specific usage method is adjusted according to the site conditions.

[0017] Each clamp 10 is provided with an air extraction channel 15, which extends from the clamping surface of each clamp 10 into the inner cavity of the rotating drum 9. A negative pressure pump 11 is installed inside the rotating drum 9. The negative pressure pump 11 is fixedly connected to the rotating drum 9 and rotates with the rotating drum 9. The exhaust pipe of the negative pressure pump 11 extends to the outside through the rear end of the rotating drum 9. In this embodiment, a servo motor 8 is used to control the rotating drum 9 to rotate at a fixed angle each time, so as to adjust the position of each clamp 10 and avoid the rotating drum 9 rotating too many times to one side and damaging the exhaust pipe extending from the negative pressure pump 11. A main exhaust pipe 12 is provided at the air intake port of the negative pressure pump 11. A distribution valve 13 is provided at the upper end of the main exhaust pipe 12 and communicates with it. Each air outlet of the distribution valve 13 is connected to the air intake channel 15 of each clamp 10 through the air intake branch pipe 14. When in use, the negative pressure pump 11 is started, and the workpiece held by the clamp 10 can be adsorbed and fixed through the air intake channel 15, thereby improving the stability of the workpiece after it is clamped.

[0018] In this embodiment, the ports connecting each exhaust pipe 14 to the exhaust channel 15 are funnel-shaped, and the size of the pipe opening is larger than the diameter of the inner port of the exhaust channel 15. They are fixed to the inner wall of the rotating cylinder 9 by adhesive bonding to avoid air leakage.

[0019] Each clamping surface of the fixture 10 is provided with a rubber pad 16, which is fixedly connected to the clamping surface of the fixture 10. The air extraction channel 15 passes through each rubber pad 16. When the negative pressure pump 11 is used to adsorb the workpiece, the rubber pad 16 contacts the workpiece, which can increase the sealing between the workpiece and the air extraction channel 15. In the air extraction channel 15 of the fixture 10 when no workpiece is clamped, the air extraction channel 15 can be sealed by inserting a rubber plug 18, which enhances the adsorption strength of the air extraction channel 15 on the side in contact with the workpiece.

[0020] In this embodiment, firstly, according to the parameters of the workpiece to be welded, a corresponding number of workpiece seats 3 are installed in the middle of the base 1. The workpiece to be welded is placed on the workpiece seat 3. The servo motors 8 on the two clamp seats are started, and the clamps 10 that are adapted to the shape of the workpiece are rotated to the corresponding position. Rubber plugs 18 are placed in the air extraction channels 15 of the remaining clamps 10. The reduction motor 4 is started to control the two clamp seats to move in the center and clamp and fix the workpiece. After the fixation is completed, the two negative pressure pumps 11 are started to adsorb and fix the workpiece before the laser welding process can be performed.

Claims

1. An adjustable laser welding platform comprising a base, characterized by: The base is provided with a workpiece seat, and left and right clamping seat are respectively arranged on the base at the left and right sides of the workpiece seat. A rotating drum connected with a motor is arranged on each clamping seat. At least two clamps are arranged along the circumference of the rotating drum. An air suction passage is arranged on the clamping surface of the rotating drum and the clamp. An air suction pipe connected with a negative pressure pump is arranged in the rotating drum. The pipe opening of the air suction pipe can be connected with the inner port of the air suction passage. At least one of the left clamping seat and the right clamping seat is connected with a moving mechanism.

2. The tunable laser welding platform of claim 1, wherein: The clamping surface of the clamp is provided with a rubber pad, and the air suction passage passes through the rubber pad.

3. The adjustable laser welding stage of claim 1 or 2, wherein: The port of the air suction pipe is in a horn shape, and the size of the pipe opening is greater than the diameter of the inner port of the air suction passage.

4. The tunable laser welding platform of claim 1 or 2, wherein: There are four clamps on each clamping seat, and the clamping surfaces thereof are respectively arc-shaped, planar, V-shaped and square tube-shaped.

5. The tunable laser welding platform of claim 1 or 2, wherein: The front and rear sides of the base are respectively provided with inwardly protruding step face guide rails, and at least one workpiece seat is placed on the step face guide rails.

6. The tunable laser welding platform of claim 1 or 2, wherein: The negative pressure pump is arranged at the rear side of the rotating drum. It is connected with the air distribution valve in the rotating drum through a total air suction pipe. Each air suction branch pipe connected with the air distribution valve can be connected with the air suction passage of each clamp.

7. The tunable laser welding platform of claim 1 or 2, wherein: At least three or four clamps are uniformly arranged along the circumference of the rotating drum. A lead screw connected with the motor is arranged on the base. The lower parts of the left clamping seat and the right clamping seat are respectively connected with the lead screw and the reverse screw.

Images