Welding jig for flange and flange support of pump

Abstract

The utility model discloses a welding jig for a flange and a flange support of a pump, which relates to the field of pump processing and comprises a six-axis manipulator with one end mounted on a support base and the other end provided with a welding gun; one end of the supporting column is fixed on the supporting base, and an air cylinder is mounted at the other end; one end of the transmission shaft is connected and driven by the air cylinder, and the other end of the transmission shaft is provided with a flange supporting and positioning block which is used for preassembling a flange support; the servo positioner is arranged on the supporting base below the flange supporting and positioning block, and the flange is placed and positioned on the servo positioner; when the air cylinder acts, the flange support is pressed on the flange through the flange support positioning block, and the welding gun is driven by the six-axis mechanical arm to weld the flange and the flange support. When the servo positioner acts, the flange and the flange support are driven to rotate synchronously, and therefore the welding position is adjusted. Automatic welding is achieved, and the labor intensity of workers is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of pump processing, in particular to a welding jig for a pump flange and a flange support. Background Art

[0002] like Figure 1 As shown, when the existing flange A (4') and flange support A (5') are welded and positioned, a fixed process solution is adopted, in which the flange is placed (sheathed) on the positioning base plate (1'), a flange support positioning plate (3') is set above the flange, and the flange support is positioned by the flange support positioning plate. At the same time, the positioning support column (2') installed on the positioning base plate is positioned with the flange support positioning plate, and finally the welding point (6') is welded. However, the existing technology has the following defects:

[0003] 1. The space is small and the operation is inconvenient. In addition, manual welding is used, which results in high labor intensity, low production efficiency and high production cost.

[0004] 2. Due to the shrinkage and deformation of the material during welding, it is difficult to separate the flange and the flange support from the positioning tooling after welding, making the operation difficult;

[0005] 3. There is a gap between the flange and the flange support in the free state, resulting in large deformation after welding and low pass rate. Utility Model Content

[0006] The purpose of the utility model is to overcome the deficiencies in the prior art and to provide a welding jig for a pump flange and a flange support, which automates welding and reduces manual labor intensity.

[0007] The purpose of this utility model is to achieve the following technical solution: a welding jig for a pump flange and a flange support, comprising:

[0008] A six-axis manipulator, one end of which is mounted on a support base and the other end of which is mounted on a welding gun;

[0009] A support column, one end of which is fixed to the support base and the other end of which is equipped with a cylinder;

[0010] A transmission shaft, one end of which is connected and driven by a cylinder, and the other end of which is installed with a flange support positioning block, the flange support positioning block is used to pre-install the flange support; and

[0011] The servo positioner is arranged on the support base below the flange support positioning block, and the flange is placed and positioned on the servo positioner;

[0012] When the cylinder is in motion, the flange support is pressed against the flange through the flange support positioning block, and the six-axis manipulator drives the welding gun to weld the flange and the flange support;

[0013] When the servo positioner is in motion, it drives the flange and flange support to rotate synchronously, thereby adjusting the welding position.

[0014] As a further technical solution, a flange is provided at the lower end of the transmission shaft for fixing and connecting the flange support positioning block. The flange support positioning block is provided with a plurality of positioning grooves for contour positioning of the flange support.

[0015] As a further technical solution, an elastic compensation plate is installed on the flange support positioning block at a position corresponding to each positioning groove. After the flange support is installed in the positioning groove, the elastic compensation plate is used to press the upper end of the flange support to provide downward pressing force on the flange support.

[0016] As a further technical solution, an avoidance groove is provided on the flange at a position corresponding to each elastic compensation sheet.

[0017] As a further technical solution, a directional plate is fixedly connected to the flange, a notch is opened at the other end of the directional plate, a linear guide rail is installed on the support column facing the directional plate, and a directional protrusion is fixed on the slider of the linear guide rail. When the drive shaft moves downward, the notch cooperates with the directional protrusion to realize the orientation of the drive shaft.

[0018] As a further technical solution, the slider is driven by an external servo mechanism. Before the servo positioner rotates, the slider slides upward along the linear guide rail to make the directional protrusion avoid the directional plate.

[0019] As a further technical solution, a positioning chassis is installed on the servo positioner, and a flange positioning pin is passed through the positioning chassis to pass through the positioning hole on the flange to position the flange on the positioning chassis. An expanding core is provided in the center of the positioning chassis, and a tapered hole is provided in the center of the expanding core. A pressure cover is provided on the expanding core to cooperate with the inner hole provided in the center of the flange; a center hole is provided in the center of the flange support positioning block for the end of the drive shaft to pass through, and the end of the drive shaft is tapered to extend into the tapered hole and cooperate with the expanding core to expand the pressure cover.

[0020] As a further technical solution, a cylinder fixing plate is installed on the top of the support column to fix the cylinder, and a connecting sleeve is arranged under the cylinder fixing plate. The piston rod of the cylinder passes through the cylinder fixing plate to drive the connecting sleeve to move up and down. The transmission shaft is supported at the lower end of the connecting sleeve through a bearing, so that the transmission shaft rotates relative to the connecting sleeve.

[0021] The beneficial effects of the utility model are:

[0022] 1. Optimize the flange and flange support welding process positioning scheme, use a six-axis manipulator to replace manual welding, improve production efficiency, reduce labor intensity and production costs;

[0023] 2. Use tooling to control the relative position between the flange and the flange support. After the flange and the flange support are welded, use a cylinder to quickly separate the tooling from the welded parts to reduce the difficulty of operation;

[0024] 3. Reduce the gap between the flange and the flange support in the free state and the deformation after welding, improve the qualified rate of welded parts, and ensure the consistency of welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of the prior art.

[0026] Figure 2 It is a structural diagram of the present utility model.

[0027] Figure 3 This is a schematic diagram of the structure after the flange and flange support are welded in the present invention.

[0028] Figure 4 This is a schematic diagram of the structure of the flange and the positioning chassis after installation and positioning in the utility model.

[0029] Figure 5 This is a schematic diagram of the structure of the servo positioner after assembly with the positioning chassis, expansion core and pressure cover in the utility model.

[0030] Figure 6 This is a structural diagram of the flange support positioning block in the utility model.

[0031] Figure 7 This is a schematic diagram of the structure of the drive shaft and the directional plate after assembly in the utility model.

[0032] Figure 8 This is a schematic diagram of the structure of the transmission shaft and the flange support positioning block after assembly in the utility model.

[0033] Figure 9 This is a structural diagram of the flange support positioning block in the present invention after the flange support and the flange are pressed tightly.

[0034] Figure 10 It is a schematic diagram of the structure of the coordination between the directional plate and the directional protrusion in the present invention.

[0035] Description of reference numerals: positioning base plate 1', positioning support column 2', flange support positioning plate 3', flange A4', flange support A5', welding point 6';

[0036] Welding gun 1, six-axis manipulator 2, support base 3, servo positioner 4, flange 5, flange support 6, flange locating pin 7, flange support locating block 8, drive shaft 9, directional plate 10, connecting sleeve 11, support column 12, cylinder fixing plate 13, cylinder 14, elastic compensation sheet 15, flange 16, positioning groove 17, avoidance groove 18, notch 19, linear guide 20, directional protrusion 21, positioning chassis 22, inner hole 23, expansion core 24, pressure cover 25, positioning hole 26, tapered hole 27, center hole 28. DETAILED DESCRIPTION

[0037] The following is a detailed introduction to the present invention with reference to the accompanying drawings:

[0038] Example 1: As shown in the attached Figures 2 to 10 As shown, a flange and flange support welding jig for a pump includes a welding gun 1, a six-axis manipulator 2, a support base 3, a servo positioner 4, a flange 5, a flange support 6, a flange locating pin 7, a flange support locating block 8, a transmission shaft 9, an oriented plate 10, a connecting sleeve 11, a support column 12, a cylinder fixing plate 13, a cylinder 14, an elastic compensation sheet 15, a flange 16, a positioning groove 17, an avoidance groove 18, a notch 19, a linear guide rail 20, a directional protrusion 21, a positioning chassis 22, an inner hole 23, an expansion core 24, a pressure cover 25, a positioning hole 26, a tapered hole 27 and a center hole 28.

[0039] Reference Attachment Figure 2 The lower end of the six-axis manipulator 2 is installed on the support base 3, and the upper end of the six-axis manipulator 2 is installed with the welding gun 1. The six-axis manipulator 2 is a conventional structure available on the market and can achieve multi-degree-of-freedom telescopic rotation.

[0040] The bottom of the support column 12 is fixed to the support base 3, and a cylinder fixing plate 13 is installed on the top of the support column 12. A cylinder 14 is fixedly installed on the cylinder fixing plate 13. Preferably, a connecting sleeve 11 is provided below the cylinder fixing plate 13. The piston rod of the cylinder 14 penetrates the cylinder fixing plate 13 and drives the connecting sleeve 11 to move up and down. The transmission shaft 9 is supported at the lower end of the connecting sleeve 11 by a bearing, so that the transmission shaft 9 rotates relative to the connecting sleeve 11. It is also possible to not provide the connecting sleeve 11, and instead directly connect the piston rod of the cylinder 14 to drive the transmission shaft 9. The piston rod of the cylinder 14 can also rotate, but the stability is poor.

[0041] The upper end of the transmission shaft 9 is connected and driven by the cylinder 14, and the lower end of the transmission shaft 9 extends outward along the circumferential direction to form a flange 16, and the flange 16 is fixedly connected to the flange support positioning block 8 by bolts, such as Figure 6As shown, the flange support positioning block 8 adopts a cross-shaped structure and has four positioning slots 17 extending therethrough. The positioning slots 17 can contour the positioning of the flange support 6. Before welding, the four flange supports 6 are pre-installed into the corresponding positioning slots 17 of the flange support positioning block 8. Furthermore, an elastic compensating sheet 15 is installed on the flange support positioning block 8 at a position corresponding to each positioning slot 17. One end of the elastic compensating sheet 15 is bolted to the flange support positioning block 8, and the other end of the elastic compensating sheet 15 is located above the positioning slot 17. After the flange support 6 is installed in the positioning slot 17, the elastic compensating sheet 15 can press the upper end of the flange support 6, providing a downward pressing force on the flange support 6. This reduces the gap between the flange and the flange support in the free state and the deformation after welding, improves the qualified rate of welded parts, and ensures the consistency of welding quality.

[0042] Preferably, if Figure 8 As shown, a avoidance groove 18 is provided on the flange 16 at a position corresponding to each elastic compensation sheet 15. At the same time, a directional plate 10 is screwed and fixed on the flange 16, and a notch 19 is provided at the other end of the directional plate 10. Figure 2 、 10 A linear guide rail 20 is installed on the support column 12 toward the directional plate 10 , and a directional protrusion 21 is fixed on the slider of the linear guide rail 20 . When the transmission shaft 9 moves downward, the notch 19 cooperates with the directional protrusion 21 to achieve the orientation of the transmission shaft 9 .

[0043] like Figure 2 、 3 As shown in Figures 4 and 5, the servo positioner 4 is arranged on the support base 3 below the flange support positioning block 8, and the flange 5 is placed and positioned on the servo positioner 4. A positioning chassis 22 is fixedly installed on the servo positioner 4, and at least one flange positioning pin 7 is passed through the positioning chassis 22. The flange positioning pin 7 passes through the positioning hole 26 provided on the flange 5 to position the flange 5 on the positioning chassis 22. An expansion core 24 is provided at the center of the positioning chassis 22, and a tapered hole 27 is provided at the center of the expansion core 24. A pressure cover 25 is sleeved on the expansion core 24, which can cooperate with the inner hole 23 provided at the center of the flange 5. A center hole 28 is provided in the center of the flange support positioning block 8, and the center hole 28 can be used for the end of the transmission shaft 9 to pass through. The end of the transmission shaft 9 adopts a tapered structure, which can extend into the tapered hole 27 and cooperate with the expansion core 24 to expand the pressure cover 25. When the cylinder 14 moves downward, the flange support 6 is pressed against the flange 5 via the flange support positioning block 8. Then, the six-axis manipulator 2 drives the welding gun 1 to weld the flange 5 and the flange support 6. In addition, when the servo positioner 4 moves, it drives the flange 5 and the flange support 6 to rotate synchronously, facilitating the adjustment of the welding position.

[0044] Preferably, the slider on the linear guide 20 is driven by an external servo mechanism. Before the servo positioner 4 rotates, the slider slides upward along the linear guide 20, causing the directional protrusion 21 to clear the directional plate 10. This prevents interference between the directional plate 10 and the directional protrusion 21 when the flange 5 rotates. In addition, the distance between the drive shaft 9 and the support column 12 is greater than the length of the directional plate 10, which facilitates the rotation of the directional plate 10 with the drive shaft 9.

[0045] Example 2: A method for welding a pump flange to a flange support, using the pump flange to flange support welding jig described in Example 1, comprising the following steps:

[0046] Step 1: Align the flange 5 with the flange positioning pins 7 and install it on the positioning chassis 22, and install the flange support 6 into each positioning groove 17 accordingly;

[0047] Step 2: Start the cylinder 14 to drive the transmission shaft 9 and the flange support positioning block 8 to move downward, so that the flange support 6 contacts and fits with the flange 5, and at the same time, the elastic compensation sheet 15 elastically compensates the flange support 6; preferably, after the notch 19 of the directional plate 10 passes through the directional protrusion 21 for orientation (that is, after the orientation of the transmission shaft 9 is completed), the external servo mechanism drives the slider to slide upward along the linear guide rail 20, so that the directional protrusion 21 avoids the directional plate 10;

[0048] Step 3: Start the six-axis manipulator 2 to drive the welding gun 1 to spot weld the fixed flange 5 and the flange support 6;

[0049] Step 4: After the welding of one flange support 6 is completed, start the servo positioner 4 to drive the flange 5 to rotate, and continue spot welding the remaining flange supports 6;

[0050] Step 5: After all the flange supports 6 are spot-welded, start the cylinder 14 to drive the transmission shaft 9 and the flange support positioning block 8 to move upward, so that the flange support positioning block 8 is disengaged from the flange support 6;

[0051] Step 6: The servo positioner 4 continues to drive the flange 5 to rotate, and the flange 5 and the flange support 6 are circumferentially welded through the welding gun 1.

[0052] Explanation of terms:

[0053] Welding gun: a module fixed on the six-axis robot, responsible for welding parts;

[0054] Six-axis robot: a module installed on the support base that drives the welding gun to weld parts;

[0055] Support base: a part used to connect, fix and carry all components;

[0056] Servo positioner: installed on the support base to make the welding part of the part in the best welding position;

[0057] Flange: a part welded to the flange support;

[0058] Flange support: a part welded to the flange;

[0059] Flange locating pin: a part installed on the servo positioner to place and position the flange;

[0060] Flange support positioning block: installed at the lower end of the transmission shaft to position the flange support parts;

[0061] Drive shaft: a part installed at the lower end of the cylinder and matched with the connecting sleeve;

[0062] Oriented plate: installed between the support column and the flange support positioning block to prevent the flange support from shifting during the up and down movement;

[0063] Connecting sleeve: a part that matches the transmission shaft;

[0064] Support column: installed on the support base, connecting and carrying the cylinder fixing plate, cylinder, connecting sleeve and transmission shaft parts;

[0065] Cylinder fixing plate: a part used to connect the support column and the cylinder;

[0066] Cylinder: Installed on the cylinder fixing plate, drives the transmission shaft, flange support positioning block and flange support parts to move up and down;

[0067] Flange support elastic compensation piece: a part installed on the flange support positioning block to compensate for the gap between the flange support and the flange.

[0068] It is understandable that for those skilled in the art, any equivalent replacement or change of the technical solution and the concept of the utility model should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A welding jig for a pump flange and a flange support, characterized in that: include: A six-axis manipulator (2), one end of which is mounted on a support base (3) and the other end of which is mounted on a welding gun (1); A support column (12), one end of which is fixed to the support base (3) and the other end of which is mounted with a cylinder (14); A transmission shaft (9) is connected and driven by a cylinder (14) at one end and a flange support positioning block (8) is installed at the other end thereof, and the flange support positioning block (8) is used to pre-install the flange support (6); and The servo positioner (4) is arranged on the support base (3) below the flange support positioning block (8), and the flange (5) is placed and positioned on the servo positioner (4); When the cylinder (14) is in motion, the flange support (6) is pressed against the flange (5) through the flange support positioning block (8), and the six-axis manipulator (2) drives the welding gun (1) to weld the flange (5) and the flange support (6); When the servo positioner (4) is in motion, it drives the flange (5) and the flange support (6) to rotate synchronously, thereby adjusting the welding position.

2. The pump flange and flange support welding jig according to claim 1, characterized in that: The lower end of the transmission shaft (9) is provided with a flange (16) for fixing and connecting the flange support positioning block (8). The flange support positioning block (8) is provided with a plurality of positioning grooves (17) for contour positioning of the flange support (6).

3. The pump flange and flange support welding jig according to claim 2, characterized in that: An elastic compensation sheet (15) is installed at a position corresponding to each positioning groove (17) on the flange support positioning block (8). After the flange support (6) is installed in the positioning groove (17), the elastic compensation sheet (15) is used to press the upper end of the flange support (6) to provide a downward pressing force on the flange support (6).

4. The pump flange and flange support welding jig according to claim 3, characterized in that: An avoidance groove (18) is provided on the flange (16) at a position corresponding to each elastic compensation sheet (15).

5. The pump flange and flange support welding jig according to claim 2, characterized in that: An oriented plate (10) is fixedly connected to the flange (16), a notch (19) is provided at the other end of the oriented plate (10), a linear guide rail (20) is installed on the support column (12) toward the oriented plate (10), a directional protrusion (21) is fixed on the slider of the linear guide rail (20), and when the transmission shaft (9) moves downward, the notch (19) cooperates with the directional protrusion (21) to achieve orientation of the transmission shaft (9).

6. The pump flange and flange support welding jig according to claim 5, characterized in that: The slider is driven by an external servo mechanism. Before the servo positioner (4) rotates, the slider slides upward along the linear guide rail (20) so that the directional projection (21) avoids the directional plate (10).

7. The pump flange and flange support welding jig according to claim 2, characterized in that: A positioning chassis (22) is installed on the servo positioner (4), and a flange positioning pin (7) is passed through the positioning chassis (22) for passing through a positioning hole (26) on the flange (5) to position the flange (5) on the positioning chassis (22). An expansion core (24) is provided at the center of the positioning chassis (22), and a tapered hole (27) is provided at the center of the expansion core (24). A pressure cover (25) is sleeved on the expansion core (24) for matching the inner hole (23) provided at the center of the flange (5); a center hole (28) is provided at the center of the flange support positioning block (8) for the end of the transmission shaft (9) to pass through, and the end of the transmission shaft (9) is tapered for extending into the tapered hole (27) and matching the expansion core (24) to expand the pressure cover (25).

8. The pump flange and flange support welding jig according to claim 1, characterized in that: A cylinder fixing plate (13) is installed on the top of the support column (12) for fixing the cylinder (14). A connecting sleeve (11) is arranged below the cylinder fixing plate (13). The piston rod of the cylinder (14) penetrates the cylinder fixing plate (13) and drives the connecting sleeve (11) to move up and down. The transmission shaft (9) is supported on the lower end of the connecting sleeve (11) through a bearing, so that the transmission shaft (9) rotates relative to the connecting sleeve (11).

Images