Automatic welding device with flanging cover plate

Abstract

The utility model discloses an automatic welding device with a flanged cover plate, which comprises a laser welding machine and a robot, the robot is provided with a rack, the rack is provided with an arc angle welding clamp and a right angle welding clamp, the laser welding machine is connected with a laser welding gun, and the laser welding gun is connected with the robot; the laser welding machine is provided with a welding execution program in advance, the robot is provided with a moving execution program in advance, and the laser welding machine and the robot control the laser welding gun to automatically weld a cover plate clamped by the arc angle welding clamp or automatically weld a cover plate clamped by the right angle welding clamp. The welding efficiency of the cover plate is improved, and meanwhile the yield of welded products is improved by shaping the welding position.

Description

Technical Field

[0001] The utility model relates to a welding device, in particular to an automatic welding device with a flanging cover plate. Background Art

[0002] Metal cover is a common structure that makes up the product shell. To match the shape of the product, the cover can be made into a variety of shapes. In order to facilitate the installation and connection of the cover, many covers need to have a flange structure. Figure 1 and Figure 2 The figure shows a metal cover plate 1, which has an inner flange with an angle of about 90°. The inner flange has a circular angle 11 and a right angle 12, wherein the circular angle 11 has a circular angle weld 11a to be welded, and the circular angle weld 11a includes a circular arc gap and a straight line gap; the edge of the right angle 12 has a right angle edge weld 12a to be welded. In the prior art, the welding at the circular angle 11 and the right angle 12 can be performed manually at two stations respectively, but the production efficiency is relatively low. In addition, the flanges at the circular angle and the right angle on the cover plate may be over-deformed before welding, and the welding gaps may be different, which makes it difficult to ensure the product size requirements after welding, and it is necessary to improve the efficiency and yield rate of the cover plate welding. Utility Model Content

[0003] The utility model aims to provide an automatic welding device for a cover plate with a flange, which can improve the automatic welding of the arc angle and the right angle of the flange of the cover plate and improve the consistency of product welding through fixture shaping.

[0004] The purpose of the utility model can be achieved through the following technical solutions.

[0005] An automatic welding device with a flanging cover plate, comprising a laser welder and a robot, wherein a frame is provided at the robot, a circular arc angle welding fixture and a right angle welding fixture are installed on the frame, the laser welder is connected to a laser welding gun, and the laser welding gun is connected to the robot;

[0006] The arc angle welding fixture comprises a first shaping convex die, a first shaping concave die and a first clamping plate, the first shaping convex die and the first shaping concave die are used to clamp the arc angle flange of the cover plate and shape the arc angle flange at the same time, the first shaping concave die is provided with a first welding avoidance groove, the first shaping convex die is a fixed die fixed on the first convex die fixing plate, the first shaping concave die is a movable die connected to the first concave die seat plate, the first concave die seat plate is connected to a first concave die actuating cylinder, the first clamping plate is located on the outer side of the first shaping convex die, the first clamping plate and the first shaping convex die are used to clamp the main body of the cover plate, and the first clamping plate is connected to a first clamping plate actuating cylinder;

[0007] The right-angle welding fixture comprises a second shaping punch, a second shaping die and a second clamping plate, the second shaping punch and the second shaping die are used to clamp the right-angle flange of the cover plate and simultaneously shape the right-angle flange, the second shaping die is provided with a second welding avoidance groove, the second shaping punch is a fixed die fixed on the second punch fixing plate, the second shaping die is a movable die connected to the second die seat plate, the second die seat plate is connected to a second die actuating cylinder, the second clamping plate is located on the outer side of the second shaping punch, the second clamping plate and the second shaping punch are used to clamp the main body of the cover plate, and the second clamping plate is connected to a second clamping plate actuating cylinder;

[0008] The laser welder is preset with a welding execution program, and the robot is preset with a moving execution program. The laser welder and the robot control the laser welding gun to automatically weld the cover plate clamped by the arc angle welding fixture or the cover plate clamped by the right angle welding fixture.

[0009] With the welding device of the utility model, the arc angle and right angle position of the cover plate are respectively fixed on the arc angle welding fixture and right angle welding fixture that match them. The fixture can shape the flanges at the arc angle and right angle. Then the robot holds the laser welding gun and controls the laser welding gun to automatically weld according to the pre-programmed running track according to the preset execution program. After the welding is completed, the robot returns to the initial position and waits for the next welding instruction. This is repeated to complete the arc angle and right angle welding of a cover plate. It not only improves the welding efficiency but also ensures the consistency of the product after welding, and improves the product yield.

[0010] The utility model has the following preferred designs:

[0011] The first die seat plate of the utility model is provided with a first slider, the first slider is slidably connected with a first linear guide rail, the first linear guide rail is fixed on a first guide rail bottom plate, a first limit block for limiting the displacement of the first die seat plate is installed on the first guide rail bottom plate, the first guide rail bottom plate is fixed on a first fixture seat plate; the first punch fixing plate is fixed on the first fixture seat plate. The movement of the first shaping die is precisely controlled by sliding the guide rail, so that the movement of the fixture is stable.

[0012] The output rod of the first die actuating cylinder of the utility model is connected to the first die actuating cross bar, and the first die actuating cross bar is connected to the first die seat plate through the first guide rod, so as to control the first die seat plate to slide along the first linear guide rail.

[0013] The output rod of the first clamping plate actuating cylinder of the utility model is connected with the first clamping plate actuating cross bar, and the first clamping plate is fixedly connected with the first clamping plate actuating cross bar.

[0014] The first clamping plate actuating cylinder of the utility model is fixedly connected to the first clamp seat plate through a first clamping plate actuating cylinder mounting seat.

[0015] The second die seat plate of the utility model is provided with a second slider, the second slider is slidably connected with a second linear guide rail, the second linear guide rail is fixed on a second guide rail bottom plate, a second limit block for limiting the displacement of the second die seat plate is installed on the second guide rail bottom plate, the second guide rail bottom plate is fixed on the second fixture seat plate; the second punch fixing plate is fixed on the second fixture seat plate.

[0016] The output rod of the second die actuating cylinder of the utility model is connected to the second die actuating cross bar, and the second die actuating cross bar is connected to the second die base plate through a second guide rod, so as to control the second die base plate to slide along the second linear guide rail.

[0017] The output rod of the second clamping plate actuating cylinder of the utility model is connected with the second clamping plate actuating cross bar, and the second clamping plate is fixedly connected with the second clamping plate actuating cross bar.

[0018] The second clamping plate actuating cylinder of the utility model is fixedly connected to the second clamp seat plate through a second clamping plate actuating cylinder mounting seat.

[0019] The utility model also comprises a wire feeder for feeding welding wire to the laser welding gun.

[0020] The utility model has the following beneficial effects:

[0021] 1. The arc angle welding fixture and the right angle welding fixture of the welding device of the utility model shape the flange of the cover plate through the punch and the die. The punch, the die and the clamping plate together complete the clamping and fixing of the flange of the cover plate and the main body. The clamping is stable and ensures the consistency of product processing. At the same time, the utility model uses a robot to automatically weld the cover plate clamped on the frame, which reduces the moving process of the cover plate processing, significantly improves the welding efficiency, and reduces the labor intensity.

[0022] 2. The components of the arc angle welding fixture of the utility model are integrated and installed on the first fixture base plate, and the components of the right-angle welding fixture are integrated and installed on the second fixture base plate. The connection between the two welding fixtures and the frame is more convenient, and the overall structural stability of each fixture is higher, which is conducive to improving the accuracy of automatic welding and improving the yield rate of welding. The movement of the movable mold is precisely controlled by the cylinder and the guide rail, and the operation is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a structural diagram of a cover plate in an embodiment;

[0024] Figure 2 yes Figure 1 A structural diagram of the cover plate at another angle;

[0025] Figure 3 It is a three-dimensional diagram of an automatic welding device with a flanging cover plate of the utility model;

[0026] Figure 4 yes Figure 3 Schematic diagram of the connection between the robot's sixth axis and the laser welding gun;

[0027] Figure 5 is a three-dimensional diagram of an arc angle welding fixture in an embodiment;

[0028] Figure 6 yes Figure 5 A three-dimensional view of the arc angle welding fixture at another angle;

[0029] Figure 7 yes Figure 5 Schematic diagram of the arc angle welding fixture and the clamping of the cover plate;

[0030] Figure 8 is a three-dimensional diagram of a right-angle welding fixture in an embodiment;

[0031] Fig. 9 yes Figure 8 Schematic diagram of the clamping of the right-angle welding fixture and the cover plate.

[0032] Description of reference numerals:

[0033] 1-cover plate, 11-arc angle, 11a-arc angle weld, 12-right angle, 12a-right angle edge weld;

[0034] 2- rack;

[0035] 3-arc angle welding fixture, 31-first shaping punch, 32-first shaping die, 32a-first welding avoidance groove, 33-first punch fixing plate, 34-first die seat plate, 34a-first slider, 34b-first linear guide rail, 34c-first guide rail bottom plate, 34d-first limit block, 35-first fixture seat plate, 36-first die actuating cylinder, 36a-first die actuating cross bar, 36b-first guide rod, 37-first clamp, 38-first clamp actuating cylinder, 38a-first clamp actuating cross bar, 38b-first clamp actuating cylinder mounting seat;

[0036] 4-right-angle welding fixture, 41-second shaping punch, 42-second shaping die, 42a-second welding avoidance groove, 43-second punch fixing plate, 44-second die seat plate, 44a-second slider, 44b-second linear guide rail, 44c-second guide rail bottom plate, 44d-second limit block, 45-second fixture seat plate, 46-second die actuating cylinder, 46a-second die actuating cross bar, 46b-second guide rod, 47-second clamp, 48-second clamp actuating cylinder, 48a-second clamp actuating cross bar, 48b-second clamp actuating cylinder mounting seat;

[0037] 5-robot, 51-profile plate, 52-welding gun pressure plate, 53-support plate, 54-connecting plate;

[0038] 6-Laser welding machine;

[0039] 7-Wire feeder;

[0040] 8-Robot control cabinet;

[0041] 9-Laser welding gun. DETAILED DESCRIPTION

[0042] The technical solution of the present utility model is described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can better understand and implement the technical solution of the present utility model.

[0043] like Figures 3 to 9 As shown, an automatic welding device with a flanging cover plate includes a laser welder 6 and a robot 5. A frame 2 is provided at the robot 5. A circular arc angle welding fixture 3 and a right angle welding fixture 4 are installed on the frame 2. The laser welder 6 is connected to a laser welding gun 9. The laser welding gun 9 is connected to the robot 5. The connection structure thereof is shown in FIG. Figure 4 In this embodiment, the robot 5 is a six-axis robot, the sixth axis of the arm of the robot 5 can move freely in all directions, the laser welding gun 9 is clamped and fixed by the profiling plate 51 and the welding gun pressing plate 52, the profiling plate 51 is connected to the connecting plate 54 through the supporting plate 53, and the connecting plate 54 is connected to the sixth axis of the robot 5;

[0044] like Figures 5 to 7As shown, the arc angle welding fixture 3 includes a first shaping punch 31, a first shaping die 32 and a first clamping plate 37. The first shaping punch 31 and the first shaping die 32 are used to clamp the arc angle flanging of the cover plate 1. The first shaping die 32 is provided with a first welding avoidance groove 32a, so that the laser welding gun 9 can weld the straight weld of the arc angle weld 11a on the cover plate 1 through the first welding avoidance groove 32a. The first shaping punch 31 is a fixed die fixed on the first punch fixing plate 33, and the first shaping die 32 is a movable die connected to the first die seat plate 34. The first die seat plate 34 is connected to the first die actuating cylinder 36. The first clamping plate 37 is located on the outer side of the first shaping punch 31. The first clamping plate 37 and the first shaping punch 31 are used to clamp the main body of the cover plate 1. The first clamping plate 37 is connected to the first clamping plate actuating cylinder 38.

[0045] like Figure 8 and Fig. 9 As shown, the right-angle welding fixture 4 includes a second shaping punch 41, a second shaping die 42 and a second clamping plate 47. The second shaping punch 41 and the second shaping die 42 are used to clamp the right-angle flange of the cover plate 1. The second shaping die 42 is provided with a second welding avoidance groove 42a, so that the laser welding gun 9 can weld the right-angle edge weld 12a on the cover plate 1 through the second welding avoidance groove 42a. The second shaping punch 41 is a fixed die fixed on the second punch fixing plate 43, and the second shaping die 42 is a movable die connected to the second die seat plate 44. The second die seat plate 44 is connected to a second die actuating cylinder 46. The second clamping plate 47 is located on the outer side of the second shaping punch 41. The second clamping plate 47 and the second shaping punch 41 are used to clamp the main body of the cover plate 1. The second clamping plate 47 is connected to a second clamping plate actuating cylinder 48.

[0046] The laser welder 6 is preset with a welding execution program, the robot 5 is preset with a moving execution program, and the movement of the robot 5 is controlled by the robot control cabinet 8. The laser welder 6 and the robot 5 control the laser welding gun 9 to automatically weld the cover plate 1 clamped by the arc angle welding fixture 3 or the cover plate 1 clamped by the right angle welding fixture 4.

[0047] As a preferred embodiment:

[0048] The first die base plate 34 is provided with a first slider 34a, which is slidably connected to a first linear guide rail 34b, which is fixed to a first guide rail bottom plate 34c, and a first stopper 34d for limiting the displacement of the first die base plate 34 is installed on the first guide rail bottom plate 34c, which is fixed to a first fixture base plate 35; the first punch fixing plate 33 is fixed to the first fixture base plate 35. The movement of the first shaping die 32 is precisely controlled by sliding the guide rail, so that the movement of the fixture is stable. In this embodiment, the first die actuating cylinder 36 is located below the first shaping punch 31, and the output rod of the first die actuating cylinder 36 is connected to the first die actuating cross bar 36a, and the first die actuating cross bar 36a is connected to the first die base plate 34 through the first guide rod 36b, and is used to control the first die base plate 34 to slide along the first linear guide rail 34b, wherein the first guide rod 36b passes through the first punch fixing plate 33 and is connected to the first die base plate 34, and the cylinder body of the first die actuating cylinder 36 is fixed on the first punch fixing plate 33, so that the overall structure of the arc angle welding fixture 3 is compact and stable, and occupies a small space.

[0049] In this embodiment, the output rod of the first clamp plate actuating cylinder 38 is connected to the first clamp plate actuating cross bar 38a, and the first clamp plate 37 is fixedly connected to the first clamp plate actuating cross bar 38a. The first clamp plate actuating cylinder 38 is fixedly connected to the first clamp seat plate 35 through the first clamp plate actuating cylinder mounting seat 38b. The first clamp seat plate 35 is mounted on the frame 2.

[0050] In this embodiment, a second slider 44a is provided on the second die base plate 44, and the second slider 44a is slidably connected to a second linear guide rail 44b, and the second linear guide rail 44b is fixed on a second guide rail base plate 44c, and a second limit block 44d for limiting the displacement of the second die base plate 44 is installed on the second guide rail base plate 44c, and the second guide rail base plate 44c is fixed on the second fixture base plate 45; the second punch fixing plate 43 is fixed on the second fixture base plate 45.

[0051] Similarly, the second die actuating cylinder 46 is located below the second shaping punch 41, and the output rod of the second die actuating cylinder 46 is connected to the second die actuating cross bar 46a, which is connected to the second die base plate 44 via the second guide rod 46b, and is used to control the second die base plate 44 to slide along the second linear guide rail 44b, wherein the second guide rod 46b passes through the second punch fixing plate 43 and is connected to the second die base plate 44, and the cylinder body of the second die actuating cylinder 46 is fixed on the second punch fixing plate 43, so that the overall structure of the right-angle welding fixture 4 is compact and stable, and occupies little space.

[0052] The output rod of the second clamp plate actuating cylinder 48 of this embodiment is connected to the second clamp plate actuating cross bar 48a, and the second clamp plate 47 is fixedly connected to the second clamp plate actuating cross bar 48a. The second clamp plate actuating cylinder 48 is fixedly connected to the second clamp seat plate 45 through the second clamp plate actuating cylinder mounting seat 48b. The second clamp seat plate 45 is mounted on the frame 2.

[0053] In this embodiment, a wire feeder 7 is further provided for feeding welding wire to the laser welding gun 9 .

[0054] The cover plate 1 in this embodiment is a top cover plate for a refrigeration device, which has two arc angles and two right angles that need to be welded. The device of the utility model can realize the rapid welding of the cover plate. In other embodiments, all those with the same or similar arc angle or right angle welding requirements as in this embodiment can use the device of the utility model to realize automatic welding.

[0055] The above embodiments are only preferred embodiments of the utility model, but cannot be used as limitations of the utility model. Any modifications and improvements based on the concept of the utility model should fall within the protection scope of the utility model. The specific protection scope shall be subject to the claims.

Claims

1. An automatic welding device for a cover plate with a flange, comprising a laser welder and a robot, characterized in that: The robot is provided with a frame, on which arc angle welding fixtures and right angle welding fixtures are installed, the laser welder is connected to a laser welding gun, and the laser welding gun is connected to the robot; The arc angle welding fixture comprises a first shaping convex die, a first shaping concave die and a first clamping plate, the first shaping convex die and the first shaping concave die are used to clamp the arc angle flange of the cover plate, the first shaping concave die is provided with a first welding avoidance groove, the first shaping convex die is a fixed die fixed on the first convex die fixing plate, the first shaping concave die is a movable die connected to the first concave die seat plate, the first concave die seat plate is connected to a first concave die actuating cylinder, the first clamping plate is located on the outer side of the first shaping convex die, the first clamping plate and the first shaping convex die are used to clamp the main body of the cover plate, and the first clamping plate is connected to a first clamping plate actuating cylinder; The right-angle welding fixture comprises a second shaping convex die, a second shaping concave die and a second clamping plate, the second shaping convex die and the second shaping concave die are used to clamp the right-angle flange of the cover plate, the second shaping concave die is provided with a second welding avoidance groove, the second shaping convex die is a fixed die fixed on the second convex die fixing plate, the second shaping concave die is a movable die connected to the second concave die seat plate, the second concave die seat plate is connected to a second concave die actuating cylinder, the second clamping plate is located on the outer side of the second shaping convex die, the second clamping plate and the second shaping convex die are used to clamp the main body of the cover plate, and the second clamping plate is connected to a second clamping plate actuating cylinder; The laser welder is preset with a welding execution program, and the robot is preset with a moving execution program. The laser welder and the robot control the laser welding gun to automatically weld the cover plate clamped by the arc angle welding fixture or the cover plate clamped by the right angle welding fixture.

2. The automatic welding device for a cover plate with a flange according to claim 1, characterized in that: A first slider is provided on the first die seat plate, the first slider is slidably connected to a first linear guide rail, the first linear guide rail is fixed on a first guide rail base plate, a first limit block for limiting the displacement of the first die seat plate is installed on the first guide rail base plate, the first guide rail base plate is fixed on a first fixture seat plate; the first punch fixing plate is fixed on the first fixture seat plate.

3. The automatic welding device for the cover plate with flange according to claim 2, characterized in that: The output rod of the first die actuating cylinder is connected to the first die actuating cross bar, and the first die actuating cross bar is connected to the first die base plate through a first guide rod, so as to control the first die base plate to slide along the first linear guide rail.

4. The automatic welding device for the cover plate with flange according to claim 3 is characterized in that: The output rod of the first clamping plate actuating cylinder is connected to the first clamping plate actuating cross bar, and the first clamping plate is fixedly connected to the first clamping plate actuating cross bar.

5. The automatic welding device for the cover plate with flange according to claim 4, characterized in that: The first clamp plate actuating cylinder is fixedly connected to the first fixture base plate through a first clamp plate actuating cylinder mounting seat.

6. The automatic welding device for the cover plate with flange according to claim 1, characterized in that: A second slider is provided on the second die base plate, the second slider is slidably connected to a second linear guide rail, the second linear guide rail is fixed on a second guide rail base plate, a second limit block for limiting the displacement of the second die base plate is installed on the second guide rail base plate, the second guide rail base plate is fixed on the second fixture base plate; the second punch fixing plate is fixed on the second fixture base plate.

7. The automatic welding device for the cover plate with flange according to claim 6, characterized in that: The output rod of the second die actuating cylinder is connected to the second die actuating cross bar, and the second die actuating cross bar is connected to the second die base plate through a second guide rod, so as to control the second die base plate to slide along the second linear guide rail.

8. The automatic welding device for the cover plate with flange according to claim 7, characterized in that: The output rod of the second clamping plate actuating cylinder is connected to the second clamping plate actuating cross bar, and the second clamping plate is fixedly connected to the second clamping plate actuating cross bar.

9. The automatic welding device for the cover plate with flange according to claim 8, characterized in that: The second clamp plate actuating cylinder is fixedly connected to the second fixture base plate via a second clamp plate actuating cylinder mounting seat.

10. The automatic welding device for a cover plate with a flange according to any one of claims 1 to 9, characterized in that: Also included is a wire feeder for feeding welding wire to the laser welding gun.

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