Pneumatic tool mould for all-position welding of air bag support robot

Abstract

The utility model discloses a pneumatic tooling mould for all-position welding of an air bag support robot, which belongs to the technical field of passenger car production and comprises a mould bottom plate, a plurality of groups of positioning mounting holes are arranged on the mould bottom plate, and each group comprises a plurality of air bag support positioning holes and planeness adjusting bolt fixing holes; a rotary pressing cylinder mounting hole is formed in each of the two sides of each group of positioning mounting holes; positioning pins are mounted in the air bag support positioning holes, and planeness adjusting bolts are mounted in the planeness adjusting bolt fixing holes; and the output end of the rotary pressing air cylinder penetrates through the rotary pressing air cylinder mounting hole. The air bag support base plate is positioned through double shafts, the precision deviation is small, and welding seam deviation in the welding process is avoided; the air bag support bottom plate is provided with the assembling holes, the reinforcing plate and the rib plate are provided with the bosses, it is guaranteed that the assembling clearance deviation is small, and the assembling precision and the production efficiency are improved. A workpiece is rapidly clamped and released through the rotary pressing air cylinder, semi-automatic operation is achieved, manual intervention is reduced, and labor intensity is lowered.

Description

Technical Field

[0001] The utility model belongs to the technical field of bus production, and in particular relates to a pneumatic tooling jig for all-position welding of an air bag support robot. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] At present, the production of electric welding workpieces for air bag supports for buses adopts manual welding. The traditional tooling jig structure used is steel section + pin shaft + template. The steel section + pin shaft is used to position the bottom plate of the air bag support, and the positioning accuracy of the template is controlled to strengthen the plate. The rib plate can only be spot-welded by dimensional measurement. This traditional jig has poor accuracy and requires personnel to clamp and disassemble materials, which increases the labor intensity of employees and wastes production time.

[0004] Although using automated robots to replace manual welding can reduce the labor intensity of employees to a certain extent, some problems still exist: continuing to use traditional jigs cannot enable robots to perform batch welding in all positions, and cannot guarantee the accuracy of assembly and the consistency of welding quality. It is impossible to clamp and release workpieces quickly, cannot achieve semi-automatic operation, cannot reduce manual intervention, and cannot improve production efficiency. Utility Model Content

[0005] In response to the above problems, the utility model provides a pneumatic tooling jig for all-position welding of air bag support robots, which can be used for robot batch welding in all positions, while ensuring high accuracy and consistency of welding quality, and can quickly clamp and release workpieces to achieve semi-automatic operation, reduce manual intervention, reduce employee labor intensity, and improve production efficiency.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A pneumatic tooling jig for all-position welding of air bag support robots, comprising a jig base plate, on the front of which a plurality of air bag supports are fixed via a cylinder pressing end of a rotating pressing cylinder;

[0008] Several groups of positioning and mounting holes are correspondingly provided on the bottom plate of the mold, and each group of positioning and mounting holes includes several air bag support positioning holes and several flatness adjustment bolt fixing holes;

[0009] The bottom plate of the mold is also provided with a rotating and pressing cylinder mounting hole, and each set of positioning mounting holes is provided with a rotating and pressing cylinder mounting hole on both sides;

[0010] There are also multiple self-locking valve buttons set in a corner of the front of the tire base;

[0011] A positioning pin is installed in the positioning hole of the air bag support, and a flatness adjustment bolt is installed in the fixing hole of the flatness adjustment bolt; and the output end of the rotary pressing cylinder passes through the mounting hole of the rotary pressing cylinder.

[0012] Preferably, the plurality of groups of positioning mounting holes are divided into multiple rows, and in each row, the spacing between adjacent groups of positioning mounting holes is consistent; the number of self-locking valve buttons is consistent with the number of rows of positioning mounting holes.

[0013] Preferably, the air bag support positioning hole and the flatness adjustment bolt fixing hole are both internal threaded holes, and the positioning pin and the flatness adjustment bolt are both arranged in the corresponding holes through threaded connection.

[0014] Preferably, the rotary pressing cylinder includes a single cantilever rotary pressing cylinder and a symmetrical long cross-arm rotary pressing cylinder.

[0015] Preferably, the single cantilever rotary pressing cylinder is arranged on both sides of each row of positioning mounting holes, and the rotary pressing cylinders at other positions all use the symmetrical long cross-arm rotary pressing cylinders.

[0016] Preferably, the rotary pressing cylinders are installed on the reverse side of the mold base plate, and the rotary pressing cylinders in each row are connected in series through a circuit and are connected to one of the self-locking valve buttons.

[0017] Preferably, a plurality of reinforcing ribs are welded on the reverse side of the mold base plate to reinforce the tread, and thick-walled steel sections are welded around the reverse side of the mold base plate; and a milling machine is used to fine-process the front side of the mold base plate.

[0018] Preferably, the air bag support includes an air bag support base plate, to which a reinforcing plate and a rib plate are connected; a boss portion is fixedly provided at the bottom of the reinforcing plate and the rib plate; two positioning pin holes are provided on the center line of the air bag support base plate, and the spacing of the positioning pin holes is consistent with the spacing of the positioning pins in the positioning hole of the air bag support.

[0019] Preferably, a reinforcing plate assembly hole and a rib plate assembly hole are respectively distributed on both sides of the positioning pin hole, and the reinforcing plate assembly holes and the rib plate assembly holes are symmetrically distributed relative to the positioning pin hole.

[0020] Preferably, the boss portion of the reinforcing plate can be embedded in the reinforcing plate assembly hole, and the boss portion of the rib plate can be embedded in the rib plate assembly hole.

[0021] Compared with the prior art, the advantages and positive effects of this utility model are:

[0022] The present invention is a pneumatic tooling jig for robot all-position welding of airbag supports for buses. It is suitable for robot all-position batch welding. The airbag support base plate adopts dual-axis positioning, which has a small precision deviation and avoids weld offset during the welding process. By opening assembly holes in the airbag support base plate and using laser-cut bosses on the reinforcing plate and rib plate, the assembly gap deviation is ensured to be small, thereby improving the assembly accuracy and production efficiency of the airbag support. The use of a rotary clamping cylinder can quickly clamp and release the workpiece, realizing semi-automatic operation, reducing manual intervention, reducing employee labor intensity, and improving production efficiency. Multiple airbag supports can be set on the jig to achieve batch welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0024] Figure 1 This is a three-dimensional schematic diagram of the overall tooling jig according to an embodiment of the present invention;

[0025] Figure 2 This is a front plan view of a mold base plate according to an embodiment of the present invention;

[0026] Figure 3 This is a front view of a tire base plate according to an embodiment of the present invention;

[0027] Figure 4 This is a top view of the back side of the mold base plate of an embodiment of the present utility model;

[0028] Figure 5 This is a three-dimensional schematic diagram of an air bag support according to an embodiment of the present utility model;

[0029] Figure 6 This is a top view of the air bag support of an embodiment of the present utility model;

[0030] Figure 7 This is an embodiment of the utility model Figure 6 Middle AA section;

[0031] Figure 8 This is a top view of the air bag support base plate of an embodiment of the present utility model;

[0032] In the picture:

[0033] 1-1. Mould base plate; 1-2. Rotary clamping cylinder mounting hole; 1-3. Air bag support positioning hole; 1-4. Flatness adjustment bolt fixing hole; 2-1. Single cantilever rotary clamping cylinder; 2-2. Symmetrical long cross-arm rotary clamping cylinder; 2-3. Reinforcement rib; 2-4. Thick-walled steel; 2-5. Locating pin; 2-6. Flatness adjustment bolt; 3-1. Air bag support base plate; 3-2. Reinforcement plate; 3-3. Rib plate; 3-4. Locating pin hole; 3-5. Reinforcement plate assembly hole; 3-6. Rib plate assembly hole; 4-1. Air bag support; 4-2. Self-locking valve button. DETAILED DESCRIPTION

[0034] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0035] The present invention is described in detail below with reference to the accompanying drawings. The present embodiment discloses a pneumatic tooling jig for full-position welding of an air bag support robot. Figure 1 As shown, the mold base plate 1-1 includes a plurality of air bag supports 4-1 fixed to the front of the mold base plate 1-1 via the cylinder clamping end of a single cantilever rotary clamping cylinder 2-1 or a symmetrical long horizontal arm rotary clamping cylinder 2-2. In this embodiment, the number of air bag supports 4-1 is fifteen and they are arranged in three rows.

[0036] like Figure 2 As shown, the mold base plate 1-1 is provided with fifteen groups of positioning and mounting holes. Each group of positioning and mounting holes includes several air bag support positioning holes 1-3 and several flatness adjustment bolt fixing holes 1-4. In this embodiment, there are two air bag support positioning holes 1-3 and three flatness adjustment bolt fixing holes 1-4. The positioning and mounting holes are used to position, install, and level the air bag support.

[0037] In this embodiment, fifteen groups of positioning mounting holes are divided into three rows, with five groups of positioning mounting holes evenly distributed in each row; it also includes rotary clamping cylinder mounting holes 1-2, with each row including six rotary clamping cylinder mounting holes 1-2, ensuring that a rotary clamping cylinder mounting hole 1-2 is provided on both sides of each group of positioning mounting holes.

[0038] like Figure 3As shown, the positioning hole 1-3 of the air bag support is used to install the positioning pin 2-5, and the specification of the positioning pin 2-5 is Φ20mm; the flatness adjustment bolt fixing hole 1-4 is used to install the flatness adjustment bolt 2-6; the rotary clamping cylinder installation hole 1-2 is used for the output end of the single cantilever rotary clamping cylinder 2-1 or the symmetrical long cross arm rotary clamping cylinder 2-2 to pass through, and then the cylinder clamping end is installed. The air bag support positioning hole 1-3 and the flatness adjustment bolt fixing hole 1-4 are both internal threaded holes, and the positioning pin 2-5 and the flatness adjustment bolt 2-6 are all set in the corresponding holes through threaded connections. It should be noted that the rotary clamping cylinder is installed on the back side of the mold base plate to ensure the maximum utilization of the front side of the mold base plate, and each row of rotary clamping cylinders are connected in series through a line.

[0039] It is understandable that if Figure 2 As shown, a plurality of cylinder mounting bolt holes are further provided around the rotary pressing cylinder mounting hole 1-2, for passing the cylinder mounting bolts to fix the rotary pressing cylinder on the reverse side of the mold base.

[0040] In this embodiment, the mold is driven by a flipping mechanism and needs to be designed according to the size of the flipping mechanism. The mold base plate is made of 510L steel plate with a thickness of 12 mm, and is cut using a three-dimensional laser. The air bag support positioning holes, rotary clamping cylinder mounting holes, and flatness adjustment bolt fixing holes are cut, while ensuring that the hole spacing accuracy deviation is ≤0.2 mm.

[0041] like Figure 4 As shown, multiple reinforcing ribs 2-3 are welded on the reverse side of the jig base plate 1-1 to reinforce the tread, which can reduce the deformation of the jig base plate 1-1 during transportation and flipping; thick-walled steel sections 2-4 are welded around the reverse side of the jig base plate 1-1 to protect the rotary clamping cylinder and corresponding lines on the reverse side of the jig base plate 1-1; finally, a milling machine is used to fine-process the front side of the jig base plate to ensure that the flatness deviation of the front side of the jig base plate is ≤0.5mm.

[0042] After the flatness of the front of the jig base plate is adjusted, insert the locating pin 2-5 into the airbag support locating hole 1-3 and secure it. Insert the flatness adjustment bolt 2-6 into the flatness adjustment bolt fixing hole 1-4 and secure it. Insert the output end of the single-arm rotary clamping cylinder 2-1 or the symmetrical long-arm rotary clamping cylinder 2-2 into the rotary clamping cylinder mounting hole 1-2, and then mount the rotary clamping cylinder on the jig base plate using the cylinder mounting bolts. Then, use a laser leveling instrument to adjust the flatness of the flatness adjustment bolts and the cylinder clamping end, ensuring that the flatness deviation of the three flatness adjustment bolts is ≤0.2mm.

[0043] like Figure 5As shown, the air bag support 4-1 includes an air bag support base plate 3-1, and two positioning pin holes 3-4 are provided on the center line of the air bag support base plate 3-1. The spacing of the positioning pin holes 3-4 is consistent with the spacing of the positioning pins 2-5 in the air bag support positioning holes. The positioning pin holes 3-4 are sleeved on the positioning pins 2-5, so as to fix the air bag support base plate 3-1 on the tire base plate 1-1, which can ensure that the air bag support base plate 3-1 will not be offset and can achieve quick and accurate installation.

[0044] like Figure 5 、 Figure 6 、 Figure 7 As shown, the air bag support base plate 3-1 is connected to a reinforcement plate 3-2 and a rib plate 3-3, and the bottoms of the reinforcement plate 3-2 and the rib plate 3-3 are fixedly provided with a boss portion; Figure 8 As shown, a reinforcement plate assembly hole 3-5 and a rib plate assembly hole 3-6 are also provided on the air bag support base plate 3-1. On both sides of the positioning pin hole 3-4, there is a reinforcement plate assembly hole 3-5 and a rib plate assembly hole 3-6. The reinforcement plate assembly hole 3-5 and the rib plate assembly hole 3-6 are symmetrically distributed relative to the positioning pin hole 3-4.

[0045] The boss of reinforcing plate 3-2 fits into reinforcing plate assembly hole 3-5, and the boss of rib plate 3-3 fits into rib plate assembly hole 3-6. This approach reduces dimensional measurements during airbag support assembly and eliminates spot welding steps. This allows for faster and more efficient assembly of the airbag support while ensuring consistent precision after welding.

[0046] It's important to note that in this embodiment, the assembly holes in the airbag support base plate and the bosses on the reinforcement plate and rib are laser-cut, ensuring an assembly clearance deviation of ≤0.2mm. Two locating pins are used to fit the airbag support to the mold base plate. These pins are lathe-machined with a dimensional deviation of ≤0.1mm, ensuring consistent positioning of the airbag support and an accuracy deviation of ≤0.2mm. This is because the robot program requires a deviation of ≤1mm, and low accuracy prevents weld offset during welding.

[0047] In this embodiment, the bottom of the airbag support base plate is supported by three flatness adjustment bolts, and a laser leveler is used to measure the flatness. By adjusting the three flatness adjustment bolts, the flatness deviation of the airbag support base plate is ensured to be ≤0.2mm.

[0048] In this embodiment, the distance between two adjacent air bag supports is 100*100mm, and 15 air bag supports are fixed in a single batch, which can ensure the robot programming path and welding accessibility; in other embodiments, the distance and number of air bag supports are set according to actual conditions.

[0049] It should be noted that the rotary clamping cylinders at the edge of each row use single-cantilever rotary clamping cylinders, while the rotary clamping cylinders at other locations all use symmetrical long cross-arm rotary clamping cylinders, thereby ensuring that both sides of each air bag support base plate are compressed. In this embodiment, the rotary clamping cylinders have a rotation angle of 90°+10°.

[0050] like Figure 1 As shown, it also includes three self-locking valve buttons 4-2, which are arranged at a corner of the front side of the mold base. One self-locking valve button 4-2 is connected to the line of a row of rotary clamping cylinders, which is used to control the action of a row of rotary clamping cylinders, so as to quickly clamp and release the air bag support workpiece; the rotary clamping cylinder can control the size of the clamping force by adjusting the air pressure. The applicable range of gas pressure is 1-10 bar, the clamping force is 185-805N, and the tightening force is evenly distributed, ensuring the stability of the air bag support and avoiding the risk of damage to the workpiece or equipment due to excessive pressure.

[0051] The mounting holes on the air bag support and the tire base are cut with a 1:1 ratio using a 3D laser, and the overall assembly accuracy deviation is ≤0.2mm.

[0052] It can be understood that the position of the rotary clamping cylinder and the clamping end of the cylinder avoids the robot welding path, preventing the welding gun from colliding with the gun causing origin offset and program failure, and ensuring welding accuracy and welding quality consistency.

[0053] Working principle:

[0054] Install the positioning pin 2-5, flatness adjustment bolt 2-6, and single cantilever rotary clamping cylinder 2-1 or symmetrical long cross-arm rotary clamping cylinder 2-2 in place, and adjust the flatness of the flatness adjustment bolt and the cylinder clamping end to ensure that the flatness deviation of the three flatness adjustment bolts is ≤0.2mm;

[0055] Sleeve the positioning pin holes 3-4 of each air bag support base plate 3-1 onto the corresponding positioning pins 2-5, and accurately place the fifteen air bag support base plates 3-1 on the tire base plate 1-1;

[0056] Adjust the flatness of the air bag support base plate 3-1 by adjusting the flatness adjustment bolt. After the adjustment is completed, control the rotary pressing cylinder to press the air bag support base plate 3-1 to complete the fixation of the air bag support base plate 3-1.

[0057] Install the reinforcement plate 3-2 and rib plate 3-3 of corresponding specifications on the air bag support base plate 3-1;

[0058] Finally, a robot with a programmed path is used to weld the air bag support on the tire base.

[0059] Although the above describes the specific implementation methods of the present invention in conjunction with the accompanying drawings, it does not limit the scope of protection of the present invention. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present invention, various modifications or variations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present invention.

Claims

1. A pneumatic tooling jig for all-position welding of airbag support robots, characterized in that: It includes a mold base plate, on the front side of which a plurality of air bag supports are fixed via the cylinder pressing end of a rotating pressing cylinder; Several groups of positioning and mounting holes are correspondingly provided on the bottom plate of the mold. Each group of positioning and mounting holes includes several air bag support positioning holes and several flatness adjustment bolt fixing holes. Rotary pressing cylinder mounting holes are also provided. A rotary pressing cylinder mounting hole is provided on both sides of each group of positioning and mounting holes. A positioning pin is installed in the positioning hole of the air bag support, and a flatness adjustment bolt is installed in the fixing hole of the flatness adjustment bolt; the output end of the rotary pressing cylinder passes through the mounting hole of the rotary pressing cylinder; the air bag support is set on the flatness adjustment bolt and clamped on the positioning pin; A plurality of self-locking valve buttons are also provided at a corner of the front side of the tire base plate.

2. The pneumatic tooling jig for all-position welding of an airbag support robot according to claim 1, characterized in that: The plurality of groups of positioning and mounting holes are divided into multiple rows, and the spacing between adjacent groups of positioning and mounting holes in each row is consistent; the number of self-locking valve buttons is consistent with the number of rows of positioning and mounting holes.

3. The pneumatic tooling jig for all-position welding of an airbag support robot according to claim 1, characterized in that: The air bag support positioning hole and the flatness adjustment bolt fixing hole are both internal threaded holes, and the positioning pin and the flatness adjustment bolt are both arranged in the corresponding holes through threaded connection.

4. The pneumatic tooling jig for all-position welding of an airbag support robot according to claim 1, characterized in that: The rotary pressing cylinder includes a single cantilever rotary pressing cylinder and a symmetrical long horizontal arm rotary pressing cylinder.

5. The pneumatic tooling jig for all-position welding of an airbag support robot according to claim 4, characterized in that: The single cantilever rotary pressing cylinder is arranged on both sides of each row of positioning mounting holes, and the rotary pressing cylinders at other positions all adopt the symmetrical long cross-arm rotary pressing cylinders.

6. The pneumatic tooling jig for all-position welding of an airbag support robot according to claim 1, characterized in that: The rotary pressing cylinders are installed on the reverse side of the mold base plate, and the rotary pressing cylinders in each row are connected in series through a circuit and are connected to one of the self-locking valve buttons.

7. The pneumatic tooling jig for all-position welding of an airbag support robot according to claim 1, characterized in that: The back side of the tread is welded with multiple reinforcing ribs to reinforce the tread, and thick-walled steel is welded around the back side of the tread; and a milling machine is used to fine-process the front side of the tread.

8. The pneumatic tooling jig for all-position welding of an airbag support robot according to claim 1, characterized in that: The air bag support includes an air bag support base plate, to which a reinforcement plate and a rib plate are connected; a boss portion is fixedly provided at the bottom of the reinforcement plate and the rib plate; two positioning pin holes are provided on the center line of the air bag support base plate, and the spacing of the positioning pin holes is consistent with the spacing of the positioning pins in the positioning hole of the air bag support.

9. The pneumatic tooling jig for all-position welding of an airbag support robot according to claim 8, characterized in that: A reinforcing plate assembly hole and a rib plate assembly hole are respectively distributed on both sides of the positioning pin hole, and the reinforcing plate assembly holes and the rib plate assembly holes are symmetrically distributed relative to the positioning pin hole.

10. The pneumatic tooling jig for all-position welding of an air bag support robot according to claim 9, characterized in that: The boss portion of the reinforcing plate can be embedded in the reinforcing plate assembly hole, and the boss portion of the rib plate can be embedded in the rib plate assembly hole.

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