Automatic welding production line for compressor shell

Abstract

The invention relates to the technical field of compressor production lines, and particularly discloses a compressor shell automatic welding production line which comprises an upper shell welding device, an overturning robot and a lower shell welding device. The device comprises a compressor output line, a tool positioning and jacking mechanism, a tool pushing mechanism, a compressor carrying device and a shell welding device. An upper shell welding procedure, a lower shell welding procedure and an overturning procedure of the compressor shell are completed through the upper shell welding equipment, the lower shell welding equipment and the overturning robot correspondingly; and the upper shell welding equipment realizes the processes of inputting, outputting, carrying, positioning and jacking, transferring, welding and the like of a compressor shell and an upper shell through a compressor input line, a compressor output line, a compressor carrying device, a tool positioning and jacking mechanism, a tool pushing mechanism and a shell welding device. The compressor shell automatic welding production line is high in welding efficiency, stable in welding quality and good in welding effect.

Description

Technical Field

[0001] The present invention relates to the technical field of compressor production lines, and in particular to an automatic welding production line for compressor shells. Background Art

[0002] The air-conditioning compressor plays the role of compressing and driving the refrigerant in the air-conditioning refrigerant circuit. The air-conditioning compressor is generally installed in the outdoor unit. In the manufacturing process of the compressor housing, welding the upper and lower housings is one of the key manufacturing steps. However, many manufacturers currently use traditional manual welding methods. The defects of this method are obvious: it relies on workers to manually align the upper and lower housings, which is not only inefficient but also difficult to ensure accuracy. In addition, during the welding process, workers are required to manually rotate the housing so that the welding wheel can perform continuous welding operations along the weld. This operation method not only increases the burden on workers, but is also easily interfered with by human factors, such as differences in skill levels, fatigue and distraction, resulting in unstable welding quality, uneven welds, and even loose welds. Summary of the Invention

[0003] The object of the present invention is to provide an automated welding production line for compressor casings with stable welding quality, good welding effect and high welding efficiency.

[0004] The object of the present invention is achieved like this: A compressor casing automated welding production line, characterized by comprising an upper casing welding device for welding the upper casing to the compressor casing, a flipping robot, and a lower casing welding device for welding the lower casing to the compressor casing to which the upper casing has been welded. The flipping robot is disposed between the upper casing welding device and the lower casing welding device. The flipping robot flips the compressor casing to which the upper casing has been welded on the compressor output line 180 degrees and then places the compressor casing on the lower casing welding device. The upper casing welding device has the same structure as the lower casing welding device. Upper shell welding equipment includes: The compressor input line is provided with a plurality of feeding fixtures for feeding the compressor casing pre-assembled with the upper and lower shells; The compressor output line is equipped with multiple feeding fixtures for conveying the compressor shell that has completed the previous welding process; Feeding fixtures for transporting compressor housings on compressor input and output lines; The tooling positioning and lifting mechanism is used to position and lift the feeding tooling and the compressor housing thereon so that the compressor handling device can grab the compressor housing; The tooling pushing mechanism is provided on the compressor input line, and is used to push the feeding tooling on the compressor input line to the tooling positioning and lifting mechanism, and is used to push the feeding tooling on the tooling positioning and lifting mechanism to the compressor output line; Compressor handling device, used to carry the compressor casing between the casing welding device and the tooling positioning and lifting mechanism; The shell welding device is used to weld the compressor shell and the upper shell together.

[0005] This compressor casing automated welding production line completes the upper shell welding process, lower shell welding process and flipping process of the compressor casing respectively through upper shell welding equipment, lower shell welding equipment and flipping robot, and the upper shell welding equipment realizes the input, output, transportation, positioning and lifting, transfer and welding of the compressor casing and the upper shell through the compressor input line, compressor output line, compressor transport device, tooling positioning and lifting mechanism, tooling pushing mechanism and casing welding device. Therefore, the compressor casing welding production line of the present invention has a high degree of automation, high welding efficiency, stable welding quality and good welding effect.

[0006] The present invention can also be further improved as follows.

[0007] The compressor input line and the compressor output line are arranged in parallel, the tooling positioning and lifting mechanism is arranged on one side of the compressor input line and is located between the compressor input line and the compressor output line, and the tooling pushing mechanism is arranged on the other side of the compressor input line and corresponds to the position of the tooling positioning and lifting mechanism.

[0008] The compressor handling device includes a support frame and a compressor feeding robot. The compressor feeding robot is horizontally slidable on the support frame. The compressor feeding robot includes a translation seat, a lifting seat and a grabbing robot. The translation seat is horizontally slidable on the support frame, the lifting seat is slid up and down on the translation seat, the grabbing robot is arranged at the lower end of the lifting seat, and the grabbing robot slides up and down below the top of the support frame.

[0009] The material grabbing robot includes a reduction transmission assembly, a rotating base, a first sliding jaw assembly and a second sliding jaw assembly. The reduction transmission assembly drives the rotating base to rotate; the structure of the first sliding jaw assembly is the same as that of the second sliding jaw assembly, and the first sliding jaw assembly and the second sliding jaw assembly are respectively arranged on both sides of the rotating base.

[0010] The first sliding clamping jaw assembly includes a fixed seat, an opening and closing cylinder, a left slide, a right slide, a left clamping jaw, a right clamping jaw, a first synchronous link, a second synchronous link and a center synchronous link, the fixed seat is arranged on a rotating base, the left slide and the right slide are horizontally slidably arranged on the fixed seat, the cylinder body of the opening and closing cylinder is connected to the right slide, the gas rod of the opening and closing cylinder is connected to the left slide, the center synchronous link is horizontally rotatable and arranged on the fixed seat and is located between the first synchronous link and the second synchronous link, one end of the first synchronous link is rotatably connected to the left slide, the other end of the first synchronous link is rotatably connected to the first end of the center synchronous link, one end of the second synchronous link is rotatably connected to the right slide, and the other end of the second synchronous link is rotatably connected to the second end of the center synchronous link, the left clamping jaw and the right clamping jaw are respectively arranged on the outer ends of the left slide and the outer ends of the right slide, the opening and closing cylinder drives the left slide and the right slide to slide toward and away from each other synchronously through the first synchronous link, the second synchronous link and the center synchronous link, thereby driving the left clamping jaw and the right clamping jaw to close and separate.

[0011] The working principle of the grabbing robot is: when the opening and closing cylinder drives the left slide to slide toward the right slide, the first synchronous link also slides toward the right slide, and the first synchronous link drives the center synchronous link to rotate forward. The other end of the center synchronous link pulls the second synchronous link and the right slide to slide toward the left slide, thereby causing the left and right slides to slide toward each other, and finally causing the left clamp and the right clamp to close and clamp the compressor casing.

[0012] On the contrary, when the opening and closing cylinder drives the left slide to slide away from the right slide, the first synchronization link also slides away from the right slide, and the first synchronization link drives the center synchronization link to rotate in the opposite direction. One end of the center synchronization link pushes the second synchronization link and the right slide to slide away from the left slide, thereby causing the left and right slides to slide back to back, and finally causing the left clamp and the right clamp to open, loosening the compressor housing.

[0013] The structure of the left clamping jaw of the present invention is the same as that of the right clamping jaw. The left clamping jaw includes a clamping jaw body, the inner end of the clamping jaw body is vertically rotatably arranged at the outer end of the left slide, the outer end of the left slide is provided with a shaft sleeve, a rotating shaft is vertically rotatably arranged in the shaft sleeve, the inner end of the clamping jaw body is fixedly connected to the rotating shaft, two groups of return springs and adjusting beads are arranged in parallel at the outer end of the left slide, and an accommodating channel is provided at the outer end of the left slide corresponding to the return spring and the adjusting bead, the adjusting bead is horizontally slidably arranged in the accommodating channel, and the return spring is arranged between the adjusting bead and the side wall of the accommodating channel; when the two clamping jaws clamp the compressor casing, the two clamping jaws can adapt to the position of the compressor casing and automatically perform fine adjustment to clamp the compressor casing; for example, the clamping jaw body can rotate left and right around the rotating shaft to clamp the compressor casing.

[0014] The compressor handling device also includes an auxiliary lifting cylinder, which is arranged on the translation seat, and the cylinder rod of the auxiliary lifting cylinder is fixedly connected to the lifting seat; the auxiliary lifting cylinder can help the lifting motor lift the entire compressor feeding robot and the compressor casing, and the lifting motor's workload is not easy to overload.

[0015] The upper end and the lower end of the rotating shaft extend out of the top end and the bottom end of the shaft sleeve respectively, and the upper end and the lower end of the rotating shaft are fixedly connected to the clamping claw body.

[0016] There is a gap in the vertical direction between the inner end of the clamp body and the outer end of the left slide. Therefore, the rotating shaft can slide up and down on the sleeve, and the clamp body can slide up and down on the outer end of the left slide to adapt to clamping compressor casings at different heights.

[0017] The shell welding device includes a gantry, a welding lifting motor, a lifting slide, two welding guns, a clamping rod and a rotary workbench. The welding lifting motor is arranged on the gantry. The welding lifting motor drives the lifting slide to slide up and down on the gantry. The clamping rod is vertically slidably arranged on the lifting slide. A clamping spring is provided between the lifting slide and the clamping rod. A clamping head is provided at the lower end of the clamping rod. Two welding guns are provided at the lower end of the lifting slide, and the rotary workbench is located below the lifting slide. The two welding guns can automatically lift and weld the compressor shell, realizing fully automatic welding of the compressor shell. There is no need for manual rotation and welding of the compressor shell, with high welding efficiency and good welding quality.

[0018] The beneficial effects of the present invention are as follows: This compressor casing automated welding production line completes the upper shell welding process, lower shell welding process and flipping process of the compressor casing respectively through upper shell welding equipment, lower shell welding equipment and flipping robot, and the upper shell welding equipment realizes the input, output, transportation, positioning and lifting, transfer and welding of the compressor casing and the upper shell through the compressor input line, compressor output line, compressor transport device, tooling positioning and lifting mechanism, tooling pushing mechanism and casing welding device. Therefore, the compressor casing welding production line of the present invention has a high degree of automation, high welding efficiency, stable welding quality and good welding effect.

[0019] When the two clamps clamp the compressor housing, the two clamps can adapt to the position of the compressor housing and automatically make fine adjustments to clamp the compressor housing; for example, the clamp body can rotate left and right around the rotation axis to clamp the compressor housing.

[0020] The two welding guns of the shell welding device can automatically lift and weld the compressor shell, realizing fully automatic welding of the compressor shell. There is no need for manual rotation and welding of the compressor shell, with high welding efficiency and good welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the automatic welding production line for compressor housings of the present invention.

[0022] Figure 2 It is a structural schematic diagram of the upper shell welding equipment of the present invention (omitting part of the shell welding device).

[0023] Figure 3 It is a structural schematic diagram of the compressor transport device of the present invention.

[0024] Figure 4 It is a partial cross-sectional view of the compressor transport device of the present invention.

[0025] Figure 5 yes Figure 4 A in the enlarged view.

[0026] Figure 6 It is a structural schematic diagram of the feeding robot of the present invention.

[0027] Figure 7 It is a cross-sectional view of the feeding robot of the present invention.

[0028] Figure 8 It is a structural schematic diagram of the material grabbing manipulator of the present invention after omitting the reduction transmission component.

[0029] Figure 9 It is a top view of the material grabbing robot of the present invention after omitting the reduction transmission component.

[0030] Figure 10 It is a side view of the left clamping jaw of the present invention.

[0031] Figure 11 It is a cross-sectional view of the left clamping jaw of the present invention.

[0032] Figure 12 yes Figure 11 Enlarged view of point B in .

[0033] Figure 13 It is an exploded view of the left clamping jaw of the present invention.

[0034] Figure 14 It is a structural schematic diagram of the shell welding device of the present invention.

[0035] Figure 15 It is a structural schematic diagram of the rotary workbench of the present invention.

[0036] Figure 16 It is a structural schematic diagram of the tool positioning and lifting mechanism of the present invention.

[0037] Figure 17 It is a structural schematic diagram of the tool positioning and lifting mechanism (with the compressor housing placed) of the present invention.

[0038] Figure 18 It is a structural schematic diagram of the tool pushing mechanism of the present invention.

[0039] Figure 19 It is a structural schematic diagram of a compressor housing with an upper shell and a lower shell welded together according to the present invention. DETAILED DESCRIPTION

[0040] The following is a further description of this patent in conjunction with the accompanying drawings and embodiments: the accompanying drawings are only for illustrative purposes and represent only schematic diagrams, not actual images, and should not be understood as limiting this patent; in order to better illustrate the embodiments of this patent, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0041] The terms "first," "second," and the like, used in this patent, do not denote any order, quantity, or importance, but are used solely to distinguish. The terms "one," "a," and the like, used in this patent, do not limit quantity but rather indicate the presence of at least one of the referenced items. Terms indicating orientation or position, such as "top," "bottom," "side," "longitudinal," "lateral," "middle," "center," "outer," "inner," "horizontal," "vertical," "left," "right," "upper," and "lower," are intended to reflect relative positions, not absolute positions. Those skilled in the art will understand the specific meanings of these terms based on the specific circumstances.

[0042] Example 1, as Figures 1 to 19 As shown, an automated welding production line for a compressor housing is characterized by comprising an upper housing welding device 1 for welding an upper housing 11 to a compressor housing 10, a flipping robot 81, and a lower housing welding device 2 for welding a lower housing 12 to the compressor housing 10 to which the upper housing 11 is welded. The flipping robot 81 is disposed between the upper housing welding device 1 and the lower housing welding device 2. The flipping robot 81 flips the compressor housing 10 to which the upper housing 11 is welded on the compressor output line 9 by 180 degrees, and then places the compressor housing 10 on the lower housing welding device 2. The structure of the upper housing welding device 1 is the same as that of the lower housing welding device 2. Upper shell welding equipment 1 includes: The compressor input line 8 is provided with a plurality of feeding fixtures 14 for feeding the compressor housing 10 pre-assembled with the upper shell 11 and the lower shell 12; The compressor output line 9 is provided with a plurality of feeding fixtures 14 for conveying the compressor housing 10 that has completed the previous welding process; Feeding tooling 14 for transporting the compressor housing 10 on the compressor input line 8 and the compressor output line 9; The tooling positioning and lifting mechanism 3 is used to position and lift the feeding tooling 14 and the compressor housing 10 thereon so that the compressor handling device 4 can grasp the compressor housing 10; The tooling pushing mechanism 90 is provided on the compressor input line 8 and is used to push the feeding tooling 14 on the compressor input line 8 to the tooling positioning and lifting mechanism 3 and to push the feeding tooling 14 on the tooling positioning and lifting mechanism 3 to the compressor output line 9; The compressor handling device 4 is used to carry the compressor housing 10 between the housing welding device 6 and the tooling positioning and lifting mechanism 3; The shell welding device 6 is used to weld the compressor shell 10 and the upper shell 11 together.

[0043] As a more specific technical solution of the present invention.

[0044] The compressor input line 8 and the compressor output line 9 of the present invention are arranged in parallel, and multiple tooling positioning and lifting mechanisms 3 are arranged on one side of the compressor input line 8 and located between the compressor input line 8 and the compressor output line 9. Multiple tooling pushing mechanisms 90 are correspondingly arranged on the other side of the compressor input line 8 and correspond to the positions of the tooling positioning and lifting mechanisms 3.

[0045] See Figure 16 and Figure 17 As shown, the tool positioning and lifting mechanism 3 includes a base body 31, a lifting cylinder 32, a lifting seat 35, a left positioning component 33 and a right positioning component 34. The structure of the left positioning component 33 is the same as that of the right positioning component 34. The left positioning component 33 and the right positioning component 34 are symmetrically arranged on the base body 31. The lifting seat 35 slides up and down on the top surface of the base body 31 and is located in the middle of the left positioning component 33 and the right positioning component 34. The lifting cylinder 32 is arranged at the bottom of the base body 31 and drives the lifting seat 35 to slide up and down. The left positioning component 33 includes a cylinder seat 37, a positioning cylinder 36, a sliding seat 39 and a positioning claw 311. The cylinder seat 37 is arranged on the base body 31, and the positioning cylinder 36 is arranged on the cylinder seat 37. The sliding seat 39 and the positioning claw 311 are provided. The seat 39 is arranged on the cylinder rod of the positioning cylinder 36, and the positioning cylinder 36 drives the sliding seat 39 to slide horizontally. Two moving rods 312 are horizontally arranged on the rear side of the positioning claw 311, and the moving rod 312 can be horizontally telescopically moved relative to the sliding seat 39. A compression spring 310 is provided on the moving rod 312, and the compression spring 310 is located between the positioning claw 311 and the sliding seat 39; since the feeding tooling is moving, the compressor housing on the feeding tooling may tilt or deflect, resulting in inaccurate position of the compressor housing, affecting the subsequent welding work; therefore, the tooling positioning and lifting mechanism 3 of the present invention can locate the position of the compressor housing, ensure the accurate position of the compressor housing, facilitate the subsequent welding work, and ensure the welding effect.

[0046] Because when the shell is placed on the tooling or during the translation process, it may tilt or deflect, which means that the position may not correspond.

[0047] Positioning guide strips 313 are provided on both sides of the top surface of the seat body 31, and the lifting seat 35 is located in the middle position of the top surface of the seat body 31. The positioning guide strips 313 are used to position the feeding tooling 14, so that the lifting seat 35 can be used to lift or lower the feeding tooling 14.

[0048] A positioning pin 314 for positioning the feeding tool 14 is provided on the lifting seat 35 , and the positioning pin 314 is used to fix the feeding tool 14 .

[0049] A guide cylinder 38 is horizontally provided on the sliding seat 39 corresponding to the moving rod 312. The moving rod 312 is horizontally extended and retracted in the guide cylinder 38. The moving rod 312 and the guide cylinder 38 are guided and slidably matched, so that the positioning claw 311 can slide horizontally stably.

[0050] The rear end of the moving rod 312 is provided with an anti-slip block 315, which is located on the rear side of the guide cylinder 38. The diameter of the anti-slip block 315 is larger than the diameter of the guide cylinder 38; the anti-slip block 315 is used to limit the moving rod 312 to prevent the moving rod 312 from sliding forward and detaching from the guide cylinder 38.

[0051] At least two limit rods 316 are vertically provided on the seat body 31, and a limit block 317 is provided on the limit rod 316. The limit block 317 is located directly above the jacking seat 35; the limit block 317 is used to prevent the feeding tooling 14 from continuing to rise, and the jacking cylinder 32 stops driving the feeding tooling 14 to rise.

[0052] As a more detailed technical solution of the present invention.

[0053] See Figure 3-Figure 13As shown, the compressor handling device 4 includes a support frame 41 and a compressor feeding manipulator 42. The compressor feeding manipulator 42 is horizontally slidably arranged on the support frame 41. The compressor feeding manipulator 42 includes a translation motor 46, a lifting motor 45, a translation seat 44, a lifting seat 43, a translation gear 411, a lifting gear 410 and a grasping manipulator 5. The translation seat 44 is horizontally slidably arranged on the support frame 41, and the lifting seat 43 is slidably arranged up and down on the translation seat 44. A lifting rack 47 is provided on the lifting seat 43 in the vertical direction. The lifting motor 45 is arranged on the translation seat 44 and drives the lifting gear 410 to rotate. The lifting gear 410 is engaged with the lifting rack 47. A translation rack 48 is provided in the horizontal direction. A translation motor 46 is provided on the translation seat 44 and drives the translation gear 411 to rotate. The translation gear 411 is engaged with the translation rack 48. The material grabbing manipulator 5 is provided at the lower end of the lifting seat 43. The material grabbing manipulator 5 slides up and down below the top of the support frame 41. The material grabbing manipulator 5 includes a reduction transmission assembly 51, a rotating base 52, a first sliding jaw assembly 53 and a second sliding jaw assembly 54. The reduction transmission assembly 51 drives the rotating base 52 to rotate. The structure of the first sliding jaw assembly 53 is the same as that of the second sliding jaw assembly 54. The first sliding jaw assembly 53 and the second sliding jaw assembly 54 are respectively provided at the rotating base 52. On both sides of the rotating base 52, the first sliding clamping jaw assembly 53 includes a fixed base 512, an opening and closing cylinder 513, a left slide 56, a right slide 55, a left clamping jaw 511, a right clamping jaw 510, a first synchronous link 58, a second synchronous link 59 and a center synchronous link 57. The fixed base 512 is provided on the rotating base 52, and the left slide 56 and the right slide 55 are horizontally slidably arranged on the fixed base 512, the cylinder body of the opening and closing cylinder 513 is connected to the right slide 55, and the gas rod of the opening and closing cylinder 513 is connected to the left slide 56. The center synchronous link 57 is horizontally rotatably provided on the fixed base 512 and is located between the first synchronous link 58 and the second synchronous link 59. One end of the synchronization link 58 is rotationally connected to the left slide 56, the other end of the first synchronization link 58 is rotationally connected to the first end of the center synchronization link 57, one end of the second synchronization link 59 is rotationally connected to the right slide 55, and the other end of the second synchronization link 59 is rotationally connected to the second end of the center synchronization link 57. The left clamp 511 and the right clamp 510 are respectively arranged on the outer ends of the left slide 56 and the outer ends of the right slide 55. The opening and closing cylinder 513 drives the left slide 56 and the right slide 55 to slide toward and away from each other synchronously through the first synchronization link 58, the second synchronization link 59 and the center synchronization link 57, thereby driving the left clamp 511 and the right clamp 510 to close and separate.

[0054] The working principle of the grabbing robot 5 of the present invention is: when the opening and closing cylinder 513 drives the left slide 56 to slide toward the right slide 55, the first synchronization link 58 also slides toward the right slide 55, and the first synchronization link 58 drives the center synchronization link 57 to rotate forward. The other end of the center synchronization link 57 pulls the second synchronization link 59 and the right slide 55 to slide toward the left slide 56, thereby causing the left slide 56 and the right slide 55 to slide toward each other, and finally causing the left clamp 511 and the right clamp 510 to close and clamp the compressor housing 10.

[0055] On the contrary, when the opening and closing cylinder 513 drives the left slide 56 to slide away from the right slide 55, the first synchronization link 58 also slides away from the right slide 55, and the first synchronization link 58 drives the center synchronization link 57 to rotate in the opposite direction. One end of the center synchronization link 57 pushes the second synchronization link 59 and the right slide 55 to slide away from the left slide 56, thereby causing the left slide 56 and the right slide 55 to slide in opposite directions, and finally causing the left clamp 511 and the right clamp 510 to open, loosening the compressor housing 10.

[0056] The structure of the left clamping jaw 511 is the same as that of the right clamping jaw 510. The left clamping jaw 511 includes a clamping jaw body 519. The inner end of the clamping jaw body 519 is vertically rotatably arranged at the outer end of the left slide 56. The outer end of the left slide 56 is provided with a shaft sleeve 516. A rotating shaft 515 is vertically rotatably arranged in the shaft sleeve 516. The inner end of the clamping jaw body 519 is fixedly connected to the rotating shaft 515. Two groups of return springs 514 and adjusting beads 520 are arranged in parallel at the outer end of the left slide 56. The outer end of the left slide 56 is provided with an accommodating channel 517 corresponding to the return spring 514 and the adjusting bead 520. The adjusting bead 520 is horizontally slidably arranged in the accommodating channel 517. The return spring 514 is arranged between the adjusting bead 520 and the side wall of the accommodating channel 517. When the two clamping jaws of the present invention clamp the compressor casing, the two clamping jaws can adapt to the position of the compressor casing and automatically perform fine adjustment to clamp the compressor casing. For example, the clamping jaw body can rotate left and right around the rotating shaft to clamp the compressor casing.

[0057] The compressor handling device 4 further includes an auxiliary lifting cylinder 49 . The auxiliary lifting cylinder 49 is disposed on the translation seat 44 , and a cylinder rod of the auxiliary lifting cylinder 49 is fixedly connected to the lifting seat 43 .

[0058] The upper end and the lower end of the rotating shaft 515 extend out of the top end and the bottom end of the shaft sleeve 516 respectively, and the upper end and the lower end of the rotating shaft 515 are fixedly connected to the clamping claw body 519.

[0059] There is a gap 100 in the vertical direction between the inner end of the clamp body 519 and the outer end of the left slide 56; therefore, the rotating shaft 515 can slide up and down on the sleeve 516, and the clamp body 519 can slide up and down on the outer end of the left slide 56 to adapt to clamping the compressor housing 10 at different height positions.

[0060] The central synchronization link 57 is located above the opening and closing cylinder 513.

[0061] The left slide plate 56 and the right slide plate 55 are arranged side by side and horizontally slide on the fixing seat 512 .

[0062] The outer ends of the left slide plate 56 and the right slide plate 55 extend out of one side of the fixing seat 512 .

[0063] The opening and closing cylinder 513 is located between the left slide 56 and the right slide 55 .

[0064] The reduction transmission assembly 51 includes an RV reducer. A driving motor (not shown) is fixed to the upper end of the RV reducer, and the lower end of the RV reducer drives the rotating base 52 to rotate.

[0065] As a more optimized technical solution of the present invention.

[0066] See Figure 14-15 As shown, the shell welding device 6 includes a gantry 61, a welding lifting motor 62, a lifting screw 63, a lifting slide 64, two welding guns 65, 66, a clamping rod 67 and a rotating workbench 7. The lifting screw 63 is vertically rotated and arranged on the gantry 61. The lifting slide 64 is slidable up and down on the gantry 61. A lifting nut is provided on the lifting slide 64. The lifting screw 63 is threadedly matched with the lifting nut. The welding lifting motor 62 is provided on the gantry 61 and drives the lifting screw 63 to rotate. The clamping rod 67 is vertically slidably arranged on the lifting slide 64. A clamping spring 68 is provided between the lifting slide 64 and the clamping rod 67. A clamping head 69 is provided at the lower end of the clamping rod 67. The two welding guns 65, 66 are provided at the lower end of the lifting slide 64. The rotating workbench 7 is located below the lifting slide 64. The platform 7 includes a welding rotary motor 71, a hollow rotating platform 72, a rotating disk 73 and a clamping cylinder 74. The welding rotary motor 71 is arranged at the lower part of the hollow rotating platform 72 and provides a power source for the hollow rotating platform 72 to rotate the rotating end on the hollow rotating platform 72. The bottom of the rotating disk 73 is fixed to the rotating end on the hollow rotating platform 72. The clamping cylinder 74 is arranged on the rotating disk 73. The clamping cylinder 74 is provided with two clamping arms 76 arranged on the left and right; the two welding guns of the present invention can automatically lift and weld the compressor casing 10, and the rotating disk 73 of the present invention can drive the clamping cylinder 74 and the compressor casing 10 to rotate. Therefore, the casing welding device of the present invention realizes fully automatic welding of the compressor casing 10, without the need for manual rotation and welding of the compressor casing 10, with high welding efficiency and good welding quality.

[0067] The hollow rotating platform 72 is a standard part, which is a hollow rotating platform produced by Guangdong Keling Intelligent Equipment Co., Ltd., model DG200FP-70-V1.

[0068] Two welding guns 65 and 66 are installed on the lower end of the lifting slide 64, one on the left and one on the right. When the compressor housing 10 rotates, the two welding guns 65 and 66 simultaneously weld the gap between the upper shell 11 and the compressor housing 10, which has high welding efficiency.

[0069] A positioning collar 75 is provided on the rotating disk 73. The positioning collar 75 is used to position and support the compressor housing 10 so that the compressor housing 10 is firmly fixed.

[0070] The clamping rod 67 is located in the middle of the two welding guns 65 and 66, and is also located directly above the positioning bead 75. The clamping rod 67 is used to press down the upper shell 11 or the lower shell 12 during welding, so that the upper shell 11 or the lower shell 12 maintains a tight fit with the compressor housing 10, facilitating welding with the welding gun.

[0071] The upper end and lower end of the clamping spring 68 respectively abut against the lifting slide 64 and the clamping head 69. The clamping spring 68 makes the clamping head 69 have a downward clamping force, which is used to press the upper shell 11 or the lower shell 12 downward during welding.

[0072] The positioning collar 75 is coaxially arranged with the rotating disk 73 , thereby ensuring that the welding gun and the compressor housing 10 are positioned accurately.

[0073] The clamping cylinder 74 is provided with two clamping arms 76 , one on the left and one on the right, and the positioning protrusion 75 is located between the two clamping arms 76 .

[0074] The flipping robot 81 of the present invention is a prior art. The flipping robot 81 of the present invention is a six-axis robot. The working end of the flipping robot 81 is provided with a gripper cylinder for grasping the compressor housing.

[0075] See Figure 18 As shown, the tooling pushing mechanism 90 includes a mounting seat 93, a movable seat 95, a first translation cylinder 91, a second translation cylinder 92 and a push plate 94. The movable seat 95 is horizontally slidably arranged on the mounting seat 93. The first translation cylinder 91 is horizontally arranged on the mounting seat 93 and drives the movable seat 95 to move horizontally. The push plate 94 is horizontally slidably arranged on the movable seat 95. The second translation cylinder 92 is arranged on the movable seat 95 and drives the push plate 94 to move horizontally.

[0076] The working principle of the present invention is: Before the automatic welding production line for the compressor casing of the present invention starts working, a worker or a robot first fixes the upper shell 11 and the lower shell 12 on the top and bottom of the compressor casing 10 respectively, and then the worker or the robot places the pre-assembled compressor casing 10, the upper shell 11 and the lower shell 12 on the feeding tooling 14 of the upper casing welding equipment 1. Then the upper casing welding equipment 1 is started, and the compressor input line 8 transports the feeding tooling 14 and the compressor casing 10 on it forward to the tooling pushing mechanism 90.

[0077] Then, the tooling pushing mechanism 90 is started, and the second translation cylinder 92 drives the push plate 94 to move forward horizontally, and the push plate 94 pushes the feeding tooling 14 on the compressor input line 8 to the base 31 of the tooling positioning and lifting mechanism 3.

[0078] Then, the tooling positioning and lifting mechanism 3 is started, and the positioning cylinders 36 of the left positioning assembly 33 and the right positioning assembly 34 respectively drive their respective sliding seats 39 and positioning claws 311 to move toward the compressor housing 10, and the two positioning claws 311 move toward each other and position the compressor housing 10. The positioning claws 311 continue to move forward to position the compressor housing 10, and the compression spring 310 is compressed until the compressor housing 10 is positioned. Then, the positioning cylinders 36 of the left positioning assembly 33 and the right positioning assembly 34 respectively drive their respective sliding seats 39 and positioning claws 311 to move away from each other, and the two positioning claws 311 are separated from the compressor housing 10. Thereafter, the lifting cylinder 32 drives the lifting seat 35 to rise, and the lifting seat 35 lifts the feeding tooling 14 upward until the feeding tooling 14 touches the limit block 317, and the lifting cylinder 32 stops driving the lifting seat 35 to rise.

[0079] Afterwards, the compressor handling device 4 is started, and the translation motor 46 drives the translation gear 411 to rotate forward. With the cooperation of the translation gear 411 and the translation rack 48, the compressor feeding robot 42 is translated to the top of the tooling positioning and lifting mechanism 3. Then, the lifting motor 45 drives the lifting gear 410 to rotate forward. The lifting gear 410 rotates forward to drive the lifting seat 43 and the grabbing robot 5 to descend. Then, the left clamping jaw 511 and the right clamping jaw 510 of the first sliding clamping jaw assembly 53 close and clamp the compressor casing 10. Then, the lifting motor 45 drives the lifting gear 410 to rotate reversely. The lifting gear 410 reverses to drive the lifting seat 43 and the grabbing robot 5 to rise. Then, the translation motor 46 drives the translation gear 411 to rotate reversely, and the feeding robot 42 is translated to the casing welding assembly 6, at this time the second sliding jaw assembly 54 is just above the rotary workbench 7, if at this time, there is a compressor casing 10 with a welded upper shell on the positioning boss 75, the grabbing robot 5 descends, and the left and right jaws of the second sliding jaw assembly 54 grab the compressor casing 10 on the positioning boss 75, and then the grabbing robot 5 rises, followed by the reduction transmission assembly 51 drives the rotating base 52 to rotate 180°. After the rotating base rotates 180°, the first sliding jaw assembly 53 is located directly above the rotary workbench 7, and then the grabbing robot 5 descends, and the left jaw 511 and the right jaw 510 of the first sliding jaw assembly 53 place the compressor casing 10 with no welded upper shell 11 on it onto the positioning boss 75, and then the grabbing robot 5 rises.

[0080] After that, the shell welding device 6 is started, and the clamping cylinder 74 drives the two clamping arms 76 to close and clamp the compressor shell 10. Then, the welding lifting motor 62 drives the lifting screw 63 to rotate forward, and the lifting nut drives the lifting slide 64, the clamping rod 67 and the two welding guns 65 and 66 to descend together until the clamping head 69 at the lower end of the clamping rod 67 is pressed on the upper shell 11. The welding needles of the two welding guns 65 and 66 are aligned with the gap between the upper shell 11 and the compressor shell 10. The lifting slide 64, the clamping rod 67 and the two welding guns 65 and 66 stop descending, and the two welding guns 65 and 66 start to weld the compressor shell 10. At the same time, the welding rotating motor 71 drives the rotating end on the hollow rotating platform 72 to rotate, thereby driving the rotating disk 73 and the clamping cylinder 74, the clamping arm 76 and the compressor shell 10 thereon to rotate 360° together, thereby facilitating the fixed two welding guns 65 and 66 to perform 360° welding on the gap between the upper shell 11 and the compressor shell 10.

[0081] After the two welding guns 65 and 66 weld the upper shell 11 and the compressor shell 10, the clamping cylinder 74 drives the two clamping arms 76 to release the compressor shell 10, and the welding lifting motor 62 drives the lifting slide 64, the clamping rod 67 and the two welding guns 65 and 66 to rise together, and the clamping head 69 no longer presses on the upper shell 11.

[0082] When the two welding guns 65 and 66 weld the upper shell 11 and the compressor housing 12, the translation motor 46 drives the translation gear 411 to rotate forward, and the compressor feeding robot 42 translates to the top of the tooling positioning and lifting mechanism 3, and then the grabbing robot 5 descends, and the second sliding clamp assembly 54 places the compressor housing 10 with the welded upper shell 11 on the feeding tooling 14 on the base body 31, followed by the grabbing robot 5 rising.

[0083] Afterwards, the lifting cylinder 32 drives the lifting seat 35 to descend, and the lifting seat 35 lowers the feeding tooling 14 until the lifting seat 35 descends to the bottom of the seat body 31 , the lifting seat 35 is separated from the feeding tooling 14 , and the feeding tooling 14 sits on the seat body 31 .

[0084] After that, the tooling pushing mechanism 90 is started again, the first translation cylinder 91 drives the movable seat 95 to move forward horizontally, the second translation cylinder 92 and the push plate 94 move forward together with the movable seat 95, and the push plate 94 pushes the feeding tooling 14 on the seat body 31 to the compressor output line 9 of the upper shell welding equipment 1, and the feeding tooling 14 is transported to the flipping robot 81 by the compressor output line 9.

[0085] Then, the flip robot 81 flips the compressor housing 10 on the compressor output line 9 by 180°, and then places it on the feeding tool 14 of the compressor input line 8 of the lower shell welding device 2.

[0086] The working principle of the lower shell welding equipment 2 of the present invention is the same as that of the upper shell welding equipment 1. Here, the working process of the lower shell welding equipment 2 of the present invention will not be described in detail. The working process of the lower shell welding equipment 2 of the present invention can refer to the working process of the upper shell welding equipment 1.

[0087] The shell welding device 6 of the lower shell welding equipment 2 of the present invention welds the compressor shell 10 and the lower shell 12 together, and then the compressor shell 10 with the welded lower shell 12 is transported out on the compressor output line 9 on the lower shell welding equipment 2. At this point, the present invention completes the welding work of the upper shell and the lower shell of the compressor shell.

[0088] The above-described embodiments are merely examples for the purpose of clarifying this patent. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of this patent, and these variations and improvements fall within the scope of protection of this patent. Therefore, the scope of protection of this patent shall be determined by the appended claims.

Claims

1. A compressor housing automatic welding production line, characterized by: The invention comprises an upper shell welding device (1) for welding an upper shell (11) and a compressor shell (10), a flipping robot (81), and a lower shell welding device (2) for welding a lower shell (12) on the compressor shell (10) to which the upper shell (11) is welded. The flipping robot (81) is arranged between the upper shell welding device (1) and the lower shell welding device (2). The flipping robot (81) flips the compressor shell (10) to which the upper shell (11) is welded on the compressor output line (9) by 180 degrees and then places the compressor shell (10) on the lower shell welding device (2). The structure of the upper shell welding device (1) is the same as that of the lower shell welding device (2). Upper shell welding equipment (1) includes: A compressor input line (8) is provided with a plurality of feeding fixtures (14) for feeding a compressor housing (10) pre-assembled with an upper shell (11) and a lower shell (12); A compressor output line (9) is provided with a plurality of feeding fixtures (14) for conveying a compressor housing (10) that has completed a previous welding process; a feeding fixture (14) for transporting the compressor housing (10) on the compressor input line (8) and on the compressor output line (9); A tool positioning and lifting mechanism (3) for positioning and lifting the feeding tool (14) and the compressor housing (10) thereon so that the compressor handling device (4) can grasp the compressor housing (10); A tool pushing mechanism (90) is provided on the compressor input line (8) and is used to push the feeding tool (14) on the compressor input line (8) to the tool positioning and lifting mechanism (3) and to push the feeding tool (14) on the tool positioning and lifting mechanism (3) to the compressor output line (9); A compressor transport device (4) is used to transport the compressor housing (10) between the housing welding device (6) and the tooling positioning and lifting mechanism (3); A shell welding device (6) is used for welding a compressor shell (10) and an upper shell (11) together.

2. The compressor housing automatic welding production line according to claim 1 is characterized in that: The compressor input line (8) and the compressor output line (9) are arranged in parallel, the tool positioning and lifting mechanism (3) is arranged on one side of the compressor input line (8) and is located between the compressor input line (8) and the compressor output line (9), and the tool pushing mechanism (90) is correspondingly arranged on the other side of the compressor input line (8) and corresponds to the position of the tool positioning and lifting mechanism (3).

3. The compressor housing automatic welding production line according to claim 1 is characterized in that: The compressor handling device (4) includes a support frame (41) and a compressor feeding manipulator (42), the compressor feeding manipulator (42) is horizontally slidably arranged on the support frame (41), the compressor feeding manipulator (42) includes a translation seat (44), a lifting seat (43) and a grasping manipulator (5), the translation seat (44) is horizontally slidably arranged on the support frame (41), the lifting seat (43) is vertically slidably arranged on the translation seat (44), the grasping manipulator (5) is arranged at the lower end of the lifting seat (43), and the grasping manipulator (5) is vertically slidably arranged below the top of the support frame (41).

4. The compressor housing automatic welding production line according to claim 3 is characterized in that: The material grabbing manipulator (5) includes a reduction transmission component (51), a rotating base (52), a first sliding jaw component (53) and a second sliding jaw component (54). The reduction transmission component (51) drives the rotating base (52) to rotate; the structure of the first sliding jaw component (53) is the same as that of the second sliding jaw component (54), and the first sliding jaw component (53) and the second sliding jaw component (54) are respectively arranged on both sides of the rotating base (52).

5. The compressor housing automatic welding production line according to claim 4 is characterized in that: The first sliding clamp assembly (53) includes a fixed seat (512), an opening and closing cylinder (513), a left slide (56), a right slide (55), a left clamp (511), a right clamp (510), a first synchronous link (58), a second synchronous link (59) and a center synchronous link (57). The fixed seat (512) is provided on the rotating base (52). The left slide (56) and the right slide (55) are horizontally slidably provided on the fixed seat (512). The cylinder body of the opening and closing cylinder (513) is connected to the right slide (55). The air rod of the opening and closing cylinder (513) is connected to the left slide (56). The center synchronous link (57) is horizontally rotatably provided on the fixed seat (512) and is located between the first synchronous link (58) and the second synchronous link (59). One end of the connecting rod (58) is rotatably connected to the left slide (56), the other end of the first synchronous connecting rod (58) is rotatably connected to the first end of the central synchronous connecting rod (57), one end of the second synchronous connecting rod (59) is rotatably connected to the right slide (55), and the other end of the second synchronous connecting rod (59) is rotatably connected to the second end of the central synchronous connecting rod (57). The left clamping jaw (511) and the right clamping jaw (510) are respectively provided at the outer end of the left slide (56) and the outer end of the right slide (55). The opening and closing cylinder (513) drives the left slide (56) and the right slide (55) to slide synchronously toward each other and synchronously away from each other through the first synchronous connecting rod (58), the second synchronous connecting rod (59) and the central synchronous connecting rod (57), thereby driving the left clamping jaw (511) and the right clamping jaw (510) to close and separate.

6. The compressor housing automatic welding production line according to claim 5 is characterized in that: The structure of the left clamping jaw (511) is the same as that of the right clamping jaw (510). The left clamping jaw (511) includes a clamping jaw body (519). The inner end of the clamping jaw body (519) is vertically rotatably arranged on the outer end of the left slide (56). The outer end of the left slide (56) is provided with a shaft sleeve (516). A rotating shaft (515) is vertically rotatably arranged inside the shaft sleeve (516). The inner end of the clamping jaw body (519) is fixedly connected to the rotating shaft (515). Two groups of return springs (514) and adjusting beads (520) are arranged in parallel at the outer end of the left slide (56). The outer end of the left slide (56) is provided with an accommodating channel (517) corresponding to the return spring (514) and the adjusting bead (520). The adjusting bead (520) is horizontally slidably arranged in the accommodating channel (517). The return spring (514) is arranged between the adjusting bead (520) and the side wall of the accommodating channel (517).

7. The compressor housing automatic welding production line according to claim 6 is characterized in that: The upper end and the lower end of the rotating shaft (515) extend out of the top end and the bottom end of the shaft sleeve respectively, and the upper end and the lower end of the rotating shaft (515) are fixedly connected to the clamping jaw body (519).

8. The automatic welding production line for compressor housing according to claim 7, characterized in that the clamping jaws There is a gap (100) between the inner end of the body (519) and the outer end of the left slide (56) in the vertical direction.

9. The compressor housing automatic welding production line according to claim 7 is characterized in that: The compressor handling device (4) further includes an auxiliary lifting cylinder (49), which is arranged on the translation seat (44), and a cylinder rod of the auxiliary lifting cylinder (49) is fixedly connected to the lifting seat (43).

10. The compressor housing automatic welding production line according to claim 1 is characterized in that: The shell welding device (6) includes a gantry (61), a welding lifting motor (62), a lifting slide (64), two welding guns (65, 66), a clamping rod (67) and a rotating worktable (7), wherein the welding lifting motor (62) is arranged on the gantry (61), the welding lifting motor (62) drives the lifting slide (64) to slide up and down on the gantry (61), the clamping rod (67) is vertically slidably arranged on the lifting slide (64), a clamping spring (68) is provided between the lifting slide (64) and the clamping rod (67), the lower end of the clamping rod (67) is provided with a clamping head (69), the two welding guns (65, 66) are provided at the lower end of the lifting slide (64), and the rotating worktable (7) is located below the lifting slide (64).

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