Multi-directional positioning clamp for gasoline engine water pump welding

Abstract

The invention is suitable for the technical field of welding tools, and provides a multidirectional positioning clamp for gasoline engine water pump welding, the multidirectional positioning clamp comprises an assembling seat, a plurality of round pipe clamping seats, a plurality of positioning plates and two rear supporting plates are fixedly mounted at the top of the assembling seat, the plurality of round pipe clamping seats are used for being clamped into the bottoms of the two sides when a round pipe frame is placed in, and the positioning plates are used for positioning the round pipe frame. The multiple positioning plates are used for positioning and supporting the pump body mounting plate at the welding position between the circular pipe frames, the pump body mounting plate is placed on the positioning plates, and the two rear supporting plates are located on the same side of the assembling base. According to the multidirectional positioning clamp for gasoline engine water pump welding, through bottom, lateral and top three-dimensional vacuum positioning, the foldable guide arms, single-motor synchronous driving and pitching and rotating two-degree-of-freedom adjustment, one-time clamping and multidirectional welding are achieved, the structure is simplified, the takt is shortened, meanwhile, the welding seam precision and operation safety are guaranteed, and the welding quality is improved. And the welding efficiency and the automation level of the gasoline engine water pump rack are remarkably improved.

Description

Technical Field

[0001] The invention belongs to the technical field of welding tooling, and in particular relates to a multi-directional positioning fixture for welding a gasoline engine water pump. Background Art

[0002] The stand of the gasoline engine unit is a circular tube frame formed by bending steel pipes, with a pump body mounting plate and horizontal pull round tubes welded in between; there are usually two horizontal pull round tubes, which are welded in the upper middle position of the circular tube frame; the pump body mounting plate usually has bolt holes for mounting the gasoline engine pump body, which is welded in the lower middle position of the circular tube frame; in order to ensure strength, steel plates with U-shaped structures are usually used for welding. In order to improve processing efficiency, positioning fixtures are required during the welding process to meet the placement and positioning of multiple components, and then manual or robotic arm welding is performed.

[0003] In the existing technology, although some current fixtures or tooling can meet the positioning requirements, when actually placing the circular tube frame, pump body mounting plate and horizontally pulled circular tube, since the fixture itself does not have a guiding placement function, it is necessary to manually adjust the position repeatedly during placement to meet the accuracy of welding. For example: The authorization announcement number is: CN111805137B, which has the above problem. Although it fixes the stand bottom plate and the circular tube frame to a certain extent, it does not reflect the positioning of the horizontally pulled circular tube above. Summary of the Invention

[0004] The present invention provides a multi-directional positioning fixture for welding a gasoline engine water pump, aiming to solve the problem in the background art that the currently used fixture tooling does not have a guiding function for placing components.

[0005] To solve the above problems, the present invention is implemented as follows: a multi-directional positioning fixture for welding a gasoline engine water pump, comprising: an assembly seat, wherein a plurality of round tube clamps, a plurality of positioning plates and two rear support plates are fixedly installed on the top of the assembly seat, the plurality of round tube clamps are used to be clamped into the bottom of both sides when the round tube frame is placed, the plurality of positioning plates are used for positioning and supporting the pump body mounting plate at the welding position between the round tube frames, the pump body mounting plate is placed on the positioning plate, the two rear support plates are located on the same side of the assembly seat, and two limiting guide plates are fixedly installed on the two rear support plates, which are used to limit the width when the round tube frame is placed along the opening so that the horizontally pulled round tube is accurately positioned when it is placed; a connecting plate is fixedly installed on the two rear support plates, and the same assembly back plate is fixedly installed on the two connecting plates, and a round tube placing plate is fixedly installed on the assembly back plate, and a plurality of round tube slots are provided on the round tube placing plate, which are used for positioning and supporting the horizontally pulled round tube at the welding position between the round tube frames, and the round tube placing plate is arranged parallel to the limiting guide plates on both sides.

[0006] Preferably, an air box and a motor are fixedly installed at the bottom of the assembly seat, a transverse screw is rotatably installed in the air box, one end of the transverse screw extends to the outside of the air box and is fixedly connected to the output shaft of the motor, a valve plate is slidably installed in the air box, and the valve plate is threadedly sleeved on the transverse screw so that the transverse screw drives the valve plate to slide, the air box and the bottom of the assembly seat are fixedly installed with the same three-way valve pipe, the air box is provided with an air pressure balancing port on the other side of the three-way valve pipe, an air cavity is provided on the assembly seat, and the three-way valve pipe is connected to the air The cavities are connected, and an air port 1 connected to the air cavity is provided on the multiple circular tube holders, which is used to adsorb and fix the circular tube frame. An air guide cavity 1 connected to the air cavity is provided on the multiple positioning plates, and an air port 2 is provided on the multiple positioning plates, which is used to adsorb and fix the pump body mounting plate. An air guide cavity 2 is provided on the circular tube placement plate, and an air port 3 connected to the air guide cavity 2 is provided in the multiple circular tube clamping grooves, which is used to adsorb and fix the horizontally pulled circular tube. An air pipe is fixedly installed between the assembly seat and the circular tube placement plate to connect the air cavity with the air guide cavity 2 and the air guide cavity 2.

[0007] Preferably, a hanging plate fixedly connected to the assembly backplate is provided above the circular tube placing plate, and a lifting plate is slidably installed between the hanging plate and the circular tube placing plate, and a lifting screw is rotatably installed on the hanging plate, and the lifting screw thread passes through the lifting plate to drive the lifting plate to rise and fall, and a lifting guide rod is fixedly installed on the bottom of the hanging plate, and the lifting guide rod slides through the lifting plate to guide the lifting plate to rise and fall, and rotating shafts are rotatably installed on both sides of the lifting plate, and support arm plates are fixedly sleeved on the two rotating shafts, and pull rod limit plates are installed on the two support arm plates, which are used to locate the placement position when the horizontally pulled circular tube is put in, so that the horizontally pulled circular tube can be correctly placed in the welding position of the circular tube frame, and the two support arm plates are unfolded when the horizontally pulled circular tube is put in, so that the pull rod limit plates are located in the limit position, and the horizontally pulled circular tube is stored after being put in.

[0008] Preferably, a deflection gear is fixedly provided on each of the two rotating shafts, and a deflection rack is fixedly installed on both sides of the assembly back plate. The two deflection gears are respectively engaged with the two deflection racks, so that when the lifting plate rises, the deflection gear drives the rotating shaft and the support arm plate to deflect upward, and deflect downward when descending.

[0009] Preferably, the shape of the positioning plate is adapted to the pump body mounting plate, and the opening position of the second air port is staggered with the assembly hole on the pump body mounting plate.

[0010] Preferably, the space between the two corresponding limiting guide plates is an insertion channel, the other side of the two limiting guide plates away from the rear support plate is the insertion side, and the round tube placement plate and the rear support plate are located on the same side.

[0011] Preferably, the position of the air pipe is staggered from the taking and placing track of the circular tube frame, and the air pipe is located at the rear side of the circular tube frame after installation.

[0012] Preferably, the support arm plate is in an L-shaped structure, the lifting plate and the hanging plate are staggered with the circular tube frame, and the lifting guide rod is a rectangular rod.

[0013] Preferably, the bottom of the pull rod limiting plate is provided with a blade surface, and the side thereof located at the end of the horizontally pulled round tube is a plane, which is used for end face guidance when the horizontally pulled round tube is placed.

[0014] Preferably, the deflection angle of the support arm plate is plus or minus 90°.

[0015] Compared with related technologies, the multi-directional positioning fixture for gasoline engine water pump welding provided by the present invention has the following beneficial effects:

[0016] Compared with the existing technology, the multi-directional positioning fixture for gasoline engine water pump welding provided by this solution realizes one-time clamping and multi-directional welding through three-dimensional vacuum positioning at the bottom, side and top, foldable guide arm, single motor synchronous drive and pitch and rotation dual-degree-of-freedom adjustment. While simplifying the structure and shortening the cycle time, it ensures weld accuracy and operational safety, significantly improving the welding efficiency and automation level of the gasoline engine water pump stand. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main three-dimensional structure of the present invention;

[0018] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of part A shown in FIG;

[0019] Figure 3 It is a rear perspective structural diagram of the present invention;

[0020] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of part B shown in FIG;

[0021] Figure 5 for Figure 3 Schematic diagram of the enlarged structure of part C shown in ;

[0022] Figure 6 It is a schematic diagram of the main cross-sectional structure of the present invention;

[0023] Figure 7 for Figure 6 Schematic diagram of the enlarged structure of part D shown in FIG;

[0024] Figure 8 for Figure 6 Schematic diagram of the enlarged structure of part E shown in FIG;

[0025] Figure 9 for Figure 6 Schematic diagram of the enlarged structure of part F shown in FIG;

[0026] Figure 10 for Figure 6 Schematic diagram of the enlarged structure of part G shown in FIG;

[0027] Figure 11 for Figure 6 Schematic diagram of the enlarged structure of part H shown in FIG;

[0028] Figure 12 It is a rear perspective structural diagram of the assembly plate portion;

[0029] Figure 13 It is a bottom-up three-dimensional structural diagram of the assembly plate part;

[0030] Figure 14 This is a schematic diagram of the main three-dimensional structure of the circular tube placement plate part;

[0031] Figure 15 It is a schematic diagram of the main three-dimensional structure of the lifting plate and the support arm plate;

[0032] Figure 16 It is a schematic diagram of the three-dimensional structure of the lifting plate and the support arm plate when viewed from above.

[0033] 1. Assembly seat; 2. Round tube holder; 3. Positioning plate; 4. Rear support plate; 5. Limiting guide plate; 6. Connecting plate; 7. Assembly back plate; 8. Round tube placement plate; 9. Round tube slot; 10. Round tube frame; 11. Pump body mounting plate; 12. Horizontal pull round tube; 13. Air box; 14. Motor 1; 15. Horizontal movement screw; 16. Valve plate; 17. Three-way valve pipe; 18. Air pressure balance port; 19. Air cavity; 20. Air port 1; 21. Air guide cavity 1; 22. Air port 2; 23. Air guide cavity 2; 24. Air port 3; 25. Air pipe; 26. Hoisting plate; 27. Lifting plate; 28. Lifting screw; 29. ​​Lifting guide rod; 30. Rotating shaft; 31. Support arm plate; 32. Pull rod limiting plate; 33. Deflection gear; 34. Deflection rack; 35. 3. Positioning port; 36. Positioning strip; 37. Axle seat; 38. Rotating shaft; 39. Moving gear; 40. Support seat; 41. Rectangular guide rod; 42. Counterweight slider; 43. Moving rack; 44. Return spring; 45. Protective strip; 46. Axle one; 47. Pulley assembly one; 48. Axle two; 49. Pulley assembly two; 50. Axle three; 51. Pulley assembly three; 52. Bevel gear one; 53. Bottom plate; 54. Articulated seat; 55. Articulated shaft; 56. Support arm; 57. Fixed plate; 58. Deflection electric telescopic rod; 59. Steering wheel; 60. Conical gear ring; 61. Power conversion shaft; 62. Bevel gear two; 63. Small gear; 64. Motor two; 65. Large gear; 66. Limit support plate; 67. Controller; 68. Tooth groove. DETAILED DESCRIPTION

[0034] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0035] The embodiment of the present invention provides a multi-directional positioning fixture for welding a gasoline engine water pump, such as Figure 1-16As shown, the multi-directional positioning fixture for gasoline engine water pump welding includes: an assembly seat 1, a plurality of round tube holders 2, a plurality of positioning plates 3 and two rear support plates 4 are fixedly installed on the top of the assembly seat 1, a plurality of the round tube holders 2 are used to be clamped into the bottom of both sides when the round tube frame 10 is placed, a plurality of the positioning plates 3 are used for positioning and supporting the pump body mounting plate 11 at the welding position between the round tube frames 10, the pump body mounting plate 11 is placed on the positioning plate 3, the two rear support plates 4 are located on the same side of the assembly seat 1, and two rear support plates 4 are fixedly installed on the two rear support plates 4. A limiting guide plate 5 is used to limit the width when the circular tube frame 10 is placed along the opening, so that the horizontally pulled circular tube 12 can be accurately positioned when placed; a connecting plate 6 is fixedly installed on the two rear support plates 4, and the same assembly back plate 7 is fixedly installed on the two connecting plates 6, and a circular tube placement plate 8 is fixedly installed on the assembly back plate 7. The circular tube placement plate 8 is provided with multiple circular tube slots 9, which are used for positioning and supporting the horizontally pulled circular tube 12 at the welding position between the circular tube frames 10, and the circular tube placement plate 8 is arranged parallel to the limiting guide plates 5 on both sides.

[0036] In this embodiment, when in use, first push the two sides of the circular tube frame 10 into the openings of the limit guide plates 5 arranged in pairs on the assembly seat 1, and rely on the inner sides of the two limit guide plates 5 to complete the initial guidance in the width direction until the circular tube frame 10 reaches the specified position and the lateral reference is established. Then, the circular tube frame 10 is pressed down as a whole, and the U-shaped groove of the circular tube holder 2 clamps the bottom tubes on both sides of the circular tube frame 10 at one time, providing vertical support and radial centering, so that the circular tube frame 10 remains horizontal; then the pump body mounting plate 11 is placed on the pump body mounting plate 11. It falls directly on the table of the positioning plate 3. The height of the positioning plate 3 is flush with the weld below the circular tube frame 10 to ensure that the vertical spacing between the pump body mounting plate 11 and the circular tube frame 10 is fixed; finally, the two horizontally pulled circular tubes 12 are placed horizontally in the circular tube slots 9 of the circular tube placement plate 8. The arc of the circular tube slots 9 is matched with the outer diameter of the horizontally pulled circular tubes 12 with zero clearance, and the direction of the circular tube slots 9 is parallel to the limiting guide plate 5 to ensure that the horizontally pulled circular tubes 12 are completely aligned with the weld above the circular tube frame 10, realizing three-way one-time positioning and reducing manual adjustment time.

[0037] After the circular tube frame 10 is locked by the circular tube holder 2 and the limiting guide plate 5, the pump body mounting plate 11 is directly placed on the positioning plate 3, and the table height of the positioning plate 3 is flush with the lower welding position of the circular tube frame 10, so as to realize the relative height positioning of the pump body mounting plate 11 and the circular tube frame 10; then, the two horizontally pulled circular tubes 12 are horizontally placed in the circular tube clamping groove 9 of the circular tube placing plate 8, the arc surface of the circular tube clamping groove 9 matches the outer diameter of the horizontally pulled circular tube 12, and the groove direction is parallel to the limiting guide plate 5, so as to ensure the coaxiality of the horizontally pulled circular tube 12 and the upper welding position of the circular tube frame 10.

[0038] The round tube holder 2, the limiting guide plate 5, the round tube placement plate 8 and the round tube slot 9 together constitute a "bottom-side-top" three-dimensional positioning system. The round tube frame 10 can simultaneously complete the bottom clamping, side guiding and top horizontal pulling positioning of the round tube 12 by pushing it in once, eliminating the manual repeated adjustment steps and significantly improving the welding accuracy and production efficiency of the gasoline engine water pump stand.

[0039] In a further preferred embodiment of the present invention, an air box 13 and a motor 14 are fixedly installed at the bottom of the assembly seat 1, a transverse screw 15 is rotatably installed in the air box 13, one end of the transverse screw 15 extends to the outside of the air box 13 and is fixedly connected to the output shaft of the motor 14, a valve plate 16 is slidably installed in the air box 13, the valve plate 16 is threadedly sleeved on the transverse screw 15, so that the transverse screw 15 drives the valve plate 16 to slide, the air box 13 and the bottom of the assembly seat 1 are fixedly installed with the same three-way valve pipe 17, the air box 13 is provided with an air pressure balance port 18 on the other side of the three-way valve pipe 17, an air cavity 19 is provided on the assembly seat 1, and the three-way valve The door tube 17 is connected to the air cavity 19, and multiple circular tube holders 2 are provided with an air port 20 connected to the air cavity 19 for adsorbing and fixing the circular tube frame 10. Multiple positioning plates 3 are provided with an air guide cavity 21 connected to the air cavity 19, and multiple positioning plates 3 are provided with an air port 22 for adsorbing and fixing the pump body mounting plate 11. The circular tube placement plate 8 is provided with an air guide cavity 23, and multiple circular tube slots 9 are provided with an air port 3 24 connected to the air guide cavity 23 for adsorbing and fixing the horizontally pulled circular tube 12. An air pipe 25 is fixedly installed between the assembly seat 1 and the circular tube placement plate 8 to connect the air cavity 19 with the air guide cavity 23 and the air guide cavity 23.

[0040] In this embodiment, each component is installed. Before welding, the motor 14 is started, and the transverse screw 15 drives the valve plate 16 to slide in the air box 13, so that the three-way valve tube 17 is connected to the air cavity 19. The air cavity 19 then generates negative pressure at the tube holder 2 through the air port 1 20, which adsorbs and locks the tube frame 10 in place downward; at the same time, the negative pressure acts on the positioning plate 3 from the air port 2 22 through the air guide cavity 1 21, and the pump body mounting plate 11 is firmly sucked flat; the negative pressure continues to suck the air in the air guide cavity 2 23 into the air cavity 19 through the air pipe 25, and then it is extracted. The air port 3 24 in each tube slot 9 simultaneously generates suction, which radially presses the horizontal pull tube 12 into the tube slot 9; the air pressure balance port 18 compensates the pressure on the back side of the valve plate 16 in real time to ensure that the adsorption force is continuous and stable, completing the one-time vacuum fixation of the three components of the tube frame 10, the pump body mounting plate 11 and the horizontal pull tube 12;

[0041] After welding is completed, the motor 14 is started in the reverse direction, the valve plate 16 moves back, the air cavity 19 is instantly connected to the atmosphere, and the negative pressure is released; the round tube holder 2, the positioning plate 3, and the round tube slot 9 lose pressure simultaneously, and the round tube frame 10, the pump body mounting plate 11, and the horizontally pulled round tube 12 can be taken out without resistance, realizing one-button loosening and a short replacement cycle.

[0042] A single vacuum system driven by the same motor 14 can achieve one-time vacuum fixation of the "bottom-middle-top" three components, eliminating the need for multiple sets of mechanical clamping mechanisms; the adsorption force is uniform and adjustable, avoiding mechanical indentation and thermal deformation, significantly improving the welding accuracy and production efficiency of the gasoline engine water pump stand, and it is also relatively simple to remove, and the air pressure can be controlled to release by reverse starting the motor 14.

[0043] In a further preferred embodiment of the present invention, a hanging plate 26 fixedly connected to the assembly back plate 7 is provided above the round tube placement plate 8, a lifting plate 27 is slidably installed between the hanging plate 26 and the round tube placement plate 8, a lifting screw 28 is rotatably installed on the hanging plate 26, the lifting screw 28 threadedly penetrates the lifting plate 27, and is used to drive the lifting plate 27 to rise and fall, and a lifting guide rod 29 is fixedly installed at the bottom of the hanging plate 26, and the lifting guide rod 29 slides through the lifting plate 27 to guide Lift and lower toward the lifting plate 27, both sides of the lifting plate 27 are rotatably installed with a rotating shaft 30, and the two rotating shafts 30 are fixedly sleeved with a support arm plate 31, and the two support arm plates 31 are installed with a pull rod limit plate 32, which is used to locate the position when the horizontally pulled circular tube 12 is placed, so that the horizontally pulled circular tube 12 can be correctly placed in the welding position of the circular tube frame 10, and the two support arm plates 31 are unfolded when the horizontally pulled circular tube 12 is placed, so that the pull rod limit plate 32 is located in the restricted position, and the horizontally pulled circular tube 12 is stored after being placed.

[0044] In this embodiment, the lifting plate 26 is fixed to the assembly back plate 7. The lifting screw 28 is first rotated to make the lifting plate 27 slide down along the lifting guide rod 29; at the same time, the two support arm plates 31 are expanded outward around the rotating shaft 30, and the pull rod limit plate 32 rotates synchronously to the two sides of the preset trajectory of the horizontal pull tube 12 to form a guide channel.

[0045] When inserting, push the horizontally pulled circular tube 12 horizontally along the guide channel formed by the pull rod limit plate 32, and the two ends are against the limit surface between the pull rod limit plates 32, and the horizontally pulled circular tube 12 falls into the precise positioning of the circular tube slot 9; then rotate the lifting screw 28 in the opposite direction, the lifting plate 27 moves up, the support arm plate 31 retracts inward, and the pull rod limit plate 32 leaves the working area, leaving operating space for subsequent welding.

[0046] The lifting plate 27 and the pull rod limit plate 32 form a liftable and foldable "movable guide door", which not only provides visual guidance during the placement stage to avoid repeated adjustments, but also completely avoids it during the welding stage, significantly shortening the clamping time of the horizontally pulled round tube 12 and improving welding accessibility.

[0047] In a further preferred embodiment of the present invention, a deflection gear 33 is fixedly mounted on each of the two rotating shafts 30, and a deflection rack 34 is fixedly mounted on both sides of the assembly back plate 7. The two deflection gears 33 are respectively engaged with the two deflection racks 34, so that when the lifting plate 27 rises, the deflection gear 33 drives the rotating shaft 30 and the support arm plate 31 to deflect upward, and deflect downward when descending.

[0048] In this embodiment, when the lifting screw 28 drives the lifting plate 27 to descend along the lifting guide rod 29, the deflection gear 33 engages with the deflection rack 34 fixed on the assembly back plate 7, forcing the rotating shaft 30 to rotate synchronously, and the support arm plate 31 unfolds downward, driving the pull rod limit plate 32 to form a guide channel; conversely, the lifting plate 27 rises, and the meshing action causes the deflection gear 33 to rotate in the opposite direction, and the support arm plate 31 automatically folds upward.

[0049] After the horizontally pulled round tube 12 is pushed into the round tube slot 9 along the unfolded pull rod limit plate 32, the lifting plate 27 continues to be moved upward. The engagement of the deflection gear 33 and the deflection rack 34 ensures that the support arm plate 31 is retracted according to the set angle, and the pull rod limit plate 32 is completely separated from the welding area. The welding gun path can be avoided without manual intervention, and automatic storage is completed.

[0050] By utilizing the meshing of the deflection gear 33 and the deflection rack 34 , the linear motion of the lifting plate 27 is directly converted into a precise angular deflection of the support arm plate 31 , thereby realizing the linkage of guidance and avoidance.

[0051] In a further preferred embodiment of the present invention, the shape of the positioning plate 3 is adapted to the pump body mounting plate 11 , and the opening position of the second air port 22 is staggered with the assembly hole on the pump body mounting plate 11 .

[0052] In this embodiment, the pump body mounting plate 11 is directly placed flat on the positioning plate 3, and the contour of the positioning plate 3 is completely consistent with the outer edge shape of the pump body mounting plate 11 to achieve planar positioning; the air port 22 is opened in the non-assembly hole area of ​​the positioning plate 3 to ensure that it does not interfere with the bolt holes of the pump body mounting plate 11 during negative pressure adsorption.

[0053] In a further preferred embodiment of the present invention, the corresponding two limiting guide plates 5 are provided with an insertion channel, the other side of the two limiting guide plates 5 away from the rear support plate 4 is the insertion side, and the round tube placement plate 8 and the rear support plate 4 are located on the same side.

[0054] In this embodiment, the circular tube frame 10 is horizontally pushed from the insertion side into the insertion channel between the two limiting guide plates 5 , and the limiting guide plates 5 achieve reference positioning in the width direction.

[0055] In a further preferred embodiment of the present invention, the position of the air pipe 25 is staggered from the placement trajectory of the circular tube frame 10 , and the air pipe 25 is located at the rear side of the circular tube frame 10 after installation.

[0056] In this embodiment, when the circular tube frame 10 is pushed along the insertion channel formed by the limiting guide plate 5, the air pipe 25 is located at the rear side of the circular tube frame 10, completely avoiding its placement trajectory. The circular tube frame 10 can be pushed into place in a straight line at one time without detouring or lifting.

[0057] In a further preferred embodiment of the present invention, the support arm plate 31 is L-shaped, the lifting plate 27 and the hanging plate 26 are staggered with respect to the circular tube frame 10, and the lifting guide rod 29 is a rectangular rod.

[0058] In this embodiment, the L-shaped arm plate 31 rises and falls synchronously with the lifting plate 27 with the rotating shaft 30 as the rotation center, and its short side forms a hook-shaped guide with the pull rod limit plate 32. The arm plate 31 and the lifting plate 27 completely avoid the picking and placing path, reducing obstruction on the front of the clamp and providing a wide operating field of view.

[0059] In a further preferred embodiment of the present invention, the bottom of the pull rod limit plate 32 is provided with a blade surface, and one side thereof located at the end of the horizontally pulled circular tube 12 is a plane, which is used for end face guidance when the horizontally pulled circular tube 12 is placed.

[0060] In this embodiment, when the horizontally pulled circular tube 12 is pushed in from the insertion side, its end face first contacts the plane of the pull rod limit plate 32. The plane provides vertical end face guidance, so that the horizontally pulled circular tube 12 remains horizontal and slides along the correct axis; the blade surface design can cooperate to avoid the top of the circular tube frame 10 and ensure the guidance of the horizontally pulled circular tube 12.

[0061] In a further preferred embodiment of the present invention, the deflection angle of the support arm plate 31 is plus or minus 90°.

[0062] In this embodiment, when the lifting plate 27 descends, the deflection gear 33 engages with the deflection rack 34, and the support arm plate 31 automatically deflects downward to the unfolded position within the range of ±90°, and the pull rod limit plate 32 swings out to form an end face guide channel for the horizontally pulled circular tube 12; when the lifting plate 27 rises, the engagement reverse drives the support arm plate 31 to deflect upward 90° and reset to achieve complete folding.

[0063] The ±90° extreme rotation angle enables the pull rod limit plate 32 to remain perpendicular to the end face of the horizontal pull tube 12 in the unfolded state, ensuring accurate guidance; after folding, the support arm plate 31 is parallel to the lifting plate 27, minimizing the overall thickness to avoid interference with the welding gun or the operator's arm.

[0064] In order to further improve the use effect of this device, in addition to the above scheme, this scheme also has the following embodiments:

[0065] In another embodiment of the present invention, a positioning hole 35 is provided on each of the two pull rod limit plates 32, and a positioning bar 36 is slidably installed in each of the two positioning holes 35. The positioning bar 36 is fixedly connected to the corresponding support arm plate 31 for stabilizing the sliding of the guide pull rod limit plate 32. The top of the two support arm plates 31 is fixedly installed with an axle seat 37 and a support seat 40. A tooth groove 68 is provided on one side of the axle seat 37 of the two pull rod limit plates 32, and a rotating shaft 38 is rotatably installed on the two axle seats 37. A moving gear 39 is fixedly installed at both ends of the two rotating shafts 38, and one of the moving gears 39 is meshed with the tooth groove 68 so that when the rotating shaft 38 rotates, the pull rod limit plate 32 is driven to slide out when positioned or to be stored when folded, and the moving gear 39 on the other side is engaged with the pull rod limit plate The positioning plates 32 are staggered, and a rectangular guide rod 41 is fixedly installed on the support seat 40. A sliding sleeve on the rectangular guide rod 41 is provided with a counterweight slider 42. The counterweight slider 42 slides according to the folding angle of the support arm plate 31. A moving rack 43 is fixedly installed on the counterweight slider 42. The moving rack 43 is staggered with the sliding trajectory of the pull rod limit plate 32 and meshes with the corresponding moving gear 39 so that when the support arm plate 31 deflects and controls the sliding of the counterweight slider 42, the moving rack 43 drives the moving gear 39 and the rotating shaft 38 to rotate, thereby controlling the sliding of the pull rod limit plate 32. A sliding sleeve on the rectangular guide rod 41 is provided with a reset spring 44. The two ends of the reset spring 44 respectively conflict with the support seat 40 and the counterweight slider 42, and are used to reset the counterweight slider 42 and the pull rod limit plate 32.

[0066] In this embodiment, when the support arm plate 31 is expanded downward along with the lifting plate 27, the counterweight slider 42 slides along the rectangular guide rod 41 under the action of its own weight and the rebound of the return spring 44, driving the moving rack 43 to drive the moving gear 39 to rotate synchronously with the rotating shaft 38; the other moving gear 39 engaged with the tooth groove 68 converts the rotational motion into linear motion, so that the pull rod limit plate 32 slides outward along the positioning port 35 to form a stable end face guide surface.

[0067] After welding is completed, the support arm plate 31 is folded upward, and the counterweight slider 42 slides in the opposite direction under the action of its own weight. The moving rack 43 drives the moving gear 39 in the opposite direction, so that the pull rod limit plate 32 is retracted into the positioning port 35, completing the automatic folding and storage to avoid interference with subsequent processes.

[0068] The linkage mechanism of the counterweight slider 42, the movable rack 43, and the movable gear 39 directly converts the folding angle of the support arm plate 31 into the telescopic stroke of the pull rod limit plate 32; the rectangular guide rod 41 and the return spring 44 ensure smooth sliding and reliable return, realize fully automatic guiding and storage, and further improve the clamping efficiency and operational safety.

[0069] In another embodiment of the present invention, a protective strip 45 located on the side of the pull rod limiting plate 32 is fixedly installed on each of the two support arm plates 31 to shield the blade surface of the pull rod limiting plate 32 when the pull rod limiting plate 32 is stored.

[0070] In this embodiment, when the support arm plate 31 is folded upward, the blade surface of the pull rod limit plate 32 is retracted inward; at this time, the protective strip 45 fixed on the side of the support arm plate 31 just covers the outside of the blade surface, forming a physical barrier to avoid being scratched by the blade surface; before unfolding, the protective strip 45 automatically moves out of the way as the support arm plate 31 moves downward, and does not affect the guiding function.

[0071] In another embodiment of the present invention, a wheel axle 46 is rotatably mounted on the air box 13, and the end of the transverse screw 15 located outside the air box 13 is synchronously driven by the wheel axle 46 using a pulley assembly 47. A wheel axle 2 48 is rotatably mounted on the assembly back plate 7, and the wheel axle 2 48 and the wheel axle 46 are synchronously driven by a pulley assembly 2 49. A wheel axle 3 50 is rotatably mounted on the lifting plate 26, and the wheel axle 3 50 and the wheel axle 2 48 are synchronously driven by a pulley assembly 3 51. A bevel gear 52 is fixedly mounted on the top of the wheel axle 3 50 and the lifting screw 28, and the two bevel gears 52 are meshed with each other, so that when the motor 14 drives the transverse screw 15 to rotate, the lifting screw 28 is synchronously driven to rotate, thereby synchronizing the adsorption and fixation with the folding and storage of the support arm plate 31, which is convenient for welding operation.

[0072] In this embodiment, motor 14 drives the transverse screw 15 to rotate, and synchronously drives the wheel shaft 1 46 on the air box 13 through the pulley assembly 1 47; the wheel shaft 1 46 transmits the power to the wheel shaft 2 48 on the assembly back plate 7 through the pulley assembly 2 49, and then transmits it to the wheel shaft 3 50 on the lifting plate 26 through the pulley assembly 3 51. The bevel gear 1 52 at the top of the wheel shaft 3 50 engages with the bevel gear 1 52 at the top of the lifting screw 28, so that the lifting screw 28 and the transverse screw 15 can operate synchronously.

[0073] The transverse screw 15 controls the valve plate 16 to open and close the vacuum channel, completing the adsorption and fixation of the circular tube frame 10, the pump body mounting plate 11 and the horizontal pull circular tube 12; at the same time, the lifting screw 28 drives the lifting plate 27 to rise and fall, so that the support arm plate 31 and the pull rod limit plate 32 are automatically unfolded and guided or folded and stored. The two actions are completed at one time by the same motor 14.

[0074] The single motor 14 is linked to the bevel gear 52 through a multi-stage pulley to achieve synchronous movement of vacuum adsorption and the guide mechanism. It has a compact structure and consistent beat, significantly improving clamping efficiency and reducing energy consumption.

[0075] In another embodiment of the present invention, a base plate 53 is provided below the assembly seat 1 and the air box 13, and a hinged seat 54 is provided on the top of the base plate 53. A support arm 56 is hingedly installed on the hinged seat 54 using a hinged shaft 55. The support arm 56 is fixedly connected to the assembly seat 1, and a fixed plate 57 is fixedly installed on the hinged seat 54. The fixed plate 57 and the bottom of the assembly seat 1 are hingedly installed with the same deflection electric telescopic rod 58, which is used to adjust the angle of the assembly seat 1 according to the welding situation.

[0076] In this embodiment, the hinged seat 54 on the base plate 53 is hinged to the support arm 56 through the hinged shaft 55, and the support arm 56 is fixedly connected to the assembly seat 1; the two ends of the deflection electric telescopic rod 58 are respectively hinged to the fixed plate 57 and the bottom of the assembly seat 1. After starting, the telescopic rod can drive the assembly seat 1 to pitch around the hinge axis.

[0077] Before or during welding, the telescopic rod 58 is controlled to extend and retract according to the weld position and welding gun posture requirements, so that the assembly seat 1 can be tilted steplessly within the range of ±30° to achieve the optimal welding angle; after the angle is in place, the telescopic rod self-locks to maintain a stable position.

[0078] In another embodiment of the present invention, a steering wheel 59 is rotatably mounted on the base plate 53, the articulated seat 54 is fixedly connected to the top of the steering wheel 59, a conical gear ring 60 is fixedly mounted on the steering wheel 59, and the conical gear ring 60 is located outside the articulated seat 54, a power conversion shaft 61 is rotatably mounted on the top of the base plate 53, a bevel gear 2 62 and a pinion 63 are fixedly sleeved on the power conversion shaft 61, the bevel gear 2 62 is meshed with the bevel gear ring 60, a motor 2 64 is fixedly mounted on the top of the base plate 53, a large gear 65 is fixedly mounted on the output shaft of the motor 2 64, the large gear 65 is meshed with the pinion 63, and is used to drive the steering wheel 59 and the assembly seat 1 to adjust the direction to be welded.

[0079] In this embodiment, the second motor 64 is started, the large gear 65 drives the small gear 63 to rotate, and the power is transmitted to the second bevel gear 62 through the power conversion shaft 61. The second bevel gear 62 drives the bevel gear ring 60 to rotate, so that the steering wheel 59 rotates horizontally on the base plate 53, driving the articulated seat 54 and the assembly seat 1 to rotate synchronously, thereby realizing rapid alignment of the direction to be welded.

[0080] During the steering process, the deflection electric telescopic rod 58 maintains the set pitch angle unchanged, and the horizontal rotation and vertical inclination are superimposed to form an arbitrary spatial posture; the welding robot or manual welding gun only needs to stand in a fixed position to complete multi-directional welding operations without the need to readjust the workpiece position.

[0081] In another embodiment of the present invention, a limiting support plate 66 is fixedly installed on the top of the base plate 53 for limiting the tilt angle of the assembly base 1. A controller 67 is fixedly installed on the assembly base 1 for controlling the operation of various electrical appliances.

[0082] In this embodiment, when the deflection electric telescopic rod 58 is extended and retracted, the assembly seat 1 pitches and swings around the hinge shaft 55; when the inclination angle reaches the set limit, the bottom of the assembly seat 1 contacts the limit support plate 66, forming a mechanical hard limit to prevent excessive flipping and ensure the safety of the equipment and workpiece.

[0083] The controller 67 is integrated into the side wall of the assembly base 1, receives welding process parameters in real time and uniformly dispatches motor 1 14, motor 2 64, deflection electric telescopic rod 58 and various vacuum adsorption components to achieve tilting, rotating and adsorption operation steps.

[0084] In summary, compared with related technologies, this device achieves one-time clamping and multi-directional welding through three-dimensional vacuum positioning at the bottom, side, and top, foldable guide arms, single-motor synchronous drive, and pitch and rotation dual-degree-of-freedom adjustment. While simplifying the structure and shortening the cycle, it ensures weld accuracy and operational safety, significantly improving the welding efficiency and automation level of the gasoline engine water pump stand.

[0085] In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways.

[0086] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope of protection of the present invention.

Claims

1. A multi-directional positioning fixture for welding gasoline engine water pumps, characterized in that: include: An assembly seat, wherein a plurality of round tube clamps, a plurality of positioning plates and two rear support plates are fixedly installed on the top of the assembly seat, wherein the plurality of round tube clamps are used to clamp into the bottom of both sides when the round tube frame is placed, and the plurality of positioning plates are used for positioning and supporting the pump body mounting plate at the welding position between the round tube frames, and the pump body mounting plate is placed on the positioning plate, and the two rear support plates are located on the same side of the assembly seat, and two limiting guide plates are fixedly installed on the two rear support plates, which are used to clamp into the limiting width when the round tube frame is placed along the opening, so as to accurately position the horizontally pulled round tube when it is placed; A connecting plate is fixedly installed on the two rear support plates, and the same assembly back plate is fixedly installed on the two connecting plates. A round tube placement plate is fixedly installed on the assembly back plate. A plurality of round tube slots are provided on the round tube placement plate for positioning and supporting the horizontal pulling of round tubes and placing them at the welding position between the round tube frames. The round tube placement plate is arranged parallel to the limiting guide plates on both sides.

2. The multi-directional positioning fixture for gasoline engine water pump welding according to claim 1, characterized in that: An air box and a motor are fixedly mounted on the bottom of the assembly seat, a transverse screw is rotatably mounted in the air box, one end of the transverse screw extends to the outside of the air box and is fixedly connected to the output shaft of the motor, a valve plate is slidably mounted in the air box, and the valve plate is threadedly sleeved on the transverse screw so that the transverse screw drives the valve plate to slide, and the same three-way valve pipe is fixedly mounted on the bottom of the air box and the assembly seat, an air pressure balancing port is provided on the other side of the air box relative to the three-way valve pipe, an air cavity is provided on the assembly seat, and the three-way valve pipe is in contact with the air cavity Connected, multiple circular tube holders are provided with an air port one connected to the air cavity, which is used to adsorb and fix the circular tube frame, multiple positioning plates are provided with an air guide cavity one connected to the air cavity, multiple positioning plates are provided with an air port two, which is used to adsorb and fix the pump body mounting plate, the circular tube placement plate is provided with an air guide cavity two, multiple circular tube clamping grooves are provided with an air port three connected to the air guide cavity two, which is used to adsorb and fix the horizontally pulled circular tube, and an air pipe is fixedly installed between the assembly seat and the circular tube placement plate to connect the air cavity with the air guide cavity two and the air guide cavity two.

3. The multi-directional positioning fixture for welding a gasoline engine water pump according to claim 1, characterized in that: The top of the lifting plate is fixed with a lifting plate, which is fixed with a lifting plate. The lifting plate is slidably installed between the lifting plate and the lifting plate. The lifting screw is rotatably installed on the lifting plate. The lifting screw thread passes through the lifting plate to drive the lifting plate to lift. A lifting guide rod is fixedly installed on the bottom of the lifting plate. The lifting guide rod slides through the lifting plate to guide the lifting plate to lift. A rotating shaft is rotatably installed on both sides of the lifting plate. The two rotating shafts are fixedly sleeved with support arm plates. Pull rod limit plates are installed on the two support arm plates for positioning the placement position when the horizontally pulled circular tube is put in, so that the horizontally pulled circular tube can be correctly placed in the welding position of the circular tube frame. The two support arm plates are unfolded when the horizontally pulled circular tube is put in, so that the pull rod limit plate is located in the limit position, and the horizontally pulled circular tube is stored after being put in.

4. The multi-directional positioning fixture for welding a gasoline engine water pump according to claim 3, characterized in that: Deflection gears are fixedly mounted on the two rotating shafts, and deflection racks are fixedly mounted on both sides of the assembly back plate. The two deflection gears are respectively engaged with the two deflection racks, so that when the lifting plate rises, the deflection gears drive the rotating shaft and the support arm plate to deflect upward, and deflect downward when the lifting plate descends.

5. The multi-directional positioning fixture for welding a gasoline engine water pump according to claim 2, characterized in that: The shape of the positioning plate is adapted to the pump body mounting plate, and the opening position of the second air port is staggered with the assembly hole on the pump body mounting plate.

6. The multi-directional positioning fixture for welding a gasoline engine water pump according to claim 1, characterized in that: The insertion channel is located between the two corresponding limiting guide plates, the other side of the two limiting guide plates away from the rear support plate is the insertion side, and the round tube placement plate and the rear support plate are located on the same side.

7. The multi-directional positioning fixture for welding a gasoline engine water pump according to claim 2, characterized in that: The position of the air pipe is staggered from the taking and placing track of the circular tube frame, and the air pipe is located at the rear side of the circular tube frame after installation.

8. The multi-directional positioning fixture for welding a gasoline engine water pump according to claim 3, characterized in that: The support arm plate is in an L-shaped structure, the lifting plate and the hanging plate are staggered with the circular tube frame, and the lifting guide rod is a rectangular rod.

9. The multi-directional positioning fixture for welding a gasoline engine water pump according to claim 3, characterized in that: The bottom of the pull rod limiting plate is provided with a blade surface, and one side thereof located at the end of the horizontally pulled round tube is a plane surface, which is used for end face guidance when the horizontally pulled round tube is put in.

10. The multi-directional positioning fixture for welding a gasoline engine water pump according to claim 3, characterized in that: The deflection angle of the support arm plate is plus or minus 90°.

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