A steel welding positioning tool for fitness equipment processing

Abstract

The present application relates to the technical field of welding tooling, and provides a steel welding positioning tooling for fitness equipment processing, comprising a tooling base plate and two sets of clamping units, the clamping unit comprising a first ring frame, a clamping mechanism, a second ring frame and a pushing mechanism, the first ring frame being slidably arranged on the top of the tooling base plate, and the clamping mechanism being rotatably arranged on the inner side of the first ring frame; the clamping mechanism comprising an inner ring plate and an outer ring plate, the outer peripheral wall of the inner ring plate being movably plugged with a plurality of clamping seats, the inner peripheral wall of the outer ring plate being rotatably installed with a plurality of rotating arm plates, each rotating arm plate being movably connected to each clamping seat; the second ring frame being movably connected to the first ring frame by a driving mechanism, and the pushing mechanism being rotatably installed on the inner side of the second ring frame, and when the driving mechanism is actuated, the pushing mechanism can move in a direction close to the first ring frame. Based on this, it can meet the clamping and positioning requirements of different types of steel pipes, and can also rotate circumferentially after the steel pipes are fixed, so as to facilitate welding the outer edges of the two steel pipes.

Description

Technical Field

[0001] The present application relates to the technical field of welding tooling, and in particular to a steel welding positioning tooling for processing fitness equipment. Background Art

[0002] With the improvement of people's living standards, more and more people are emphasizing exercise and physical activity. This has led to the rise of outdoor fitness parks and gyms, and a growing demand for fitness equipment. Fitness equipment is generally divided into two categories based on the number of training functions it offers: single-function and comprehensive multi-function. Commonly used fitness equipment includes rowing machines, exercise bikes, treadmills, treadmills, and waist slimming machines.

[0003] The support structures of existing fitness equipment are mostly welded from various steel pipes. Due to market demand and the functional requirements of the equipment itself, these steel pipes include numerous curved and shaped pipes with multiple local bends (hereinafter collectively referred to as shaped pipes). Welding these types of steel requires welders to manually hold the shaped pipes or design specialized positioning fixtures to assist in positioning. This manual positioning method increases the operator's difficulty, easily leading to weld defects and making weld quality difficult to control. Therefore, positioning fixtures are often required to clamp and position the shaped pipes.

[0004] Due to the wide variety of fitness equipment, the shapes and outer diameters of the special-shaped tubes used in different types of fitness equipment vary. Therefore, the fixture of the positioning tool needs to be improved and designed to adapt to the clamping and positioning of various special-shaped tubes, as well as the clamping and positioning of various straight steel tubes. Furthermore, after two steel tubes are fixed to the fixture, they need to be butted together, and a circle of welding needs to be performed on the outer edges of the butt joints. Therefore, the fixture needs to be improved and designed to be able to drive the steel tubes to rotate. Existing positioning tools only have the function of clamping and positioning different types of steel tubes, or only have the function of rotating a single type of steel tube after clamping and positioning. However, combining the two is difficult, resulting in limitations in the use of positioning tools and cumbersome and inconvenient operation, which needs to be improved. Summary of the Invention

[0005] Based on this, the present application provides a steel welding positioning tool for fitness equipment processing, which can not only meet the clamping and positioning requirements of different types of steel pipes, but also can rotate circumferentially after the steel pipes are fixed to facilitate welding the outer edges of the two steel pipes, which helps to improve the forming quality of the welding operation.

[0006] The present application provides a steel welding positioning tool for fitness equipment processing, which adopts the following technical solutions:

[0007] A steel welding positioning tool for processing fitness equipment includes a tool base and two sets of clamping units arranged on the tool base, and the two sets of clamping units are arranged in a mirror image; the clamping units include a first ring frame, a clamping mechanism, a second ring frame and a pushing mechanism, the first ring frame is slidably arranged on the top of the tool base, and the clamping mechanism is rotatably arranged inside the first ring frame;

[0008] The clamping mechanism includes an inner ring plate and an outer ring plate connected to each other. The outer peripheral wall of the inner ring plate is movably connected to a plurality of clamping seats, and the movement direction of the clamping seats is the same as the radial direction of the inner ring plate. The inner peripheral wall of the outer ring plate is rotatably installed with a plurality of rotating arm plates, and each rotating arm plate is movably connected to each clamping seat.

[0009] The second ring frame is movably connected to the first ring frame through a driving mechanism. The second ring frame is coaxially arranged with the first ring frame. The driving mechanism is used to force the second ring frame to move in a direction close to the first ring frame; the pushing mechanism is rotatably installed on the inner side of the second ring frame. When the driving mechanism is activated, the pushing mechanism gradually contacts each rotating arm plate to force each clamping seat to move inward and clamp the steel pipe together.

[0010] By adopting the above technical solution, the present application sets two sets of clamping units to clamp and position two steel pipes respectively. During operation, by placing the straight steel pipe directly on the inner side of the inner ring plate, or placing the straight section of the special-shaped pipe on the inner side of the inner ring plate, the ends of the two steel pipes are facing each other, and then the driving mechanism is controlled to move the pushing mechanism toward the direction close to the first ring frame. The pushing mechanism can gradually abut against each rotating arm plate, thereby forcing each clamping seat to move inward and close together, which can achieve a stable clamping of the steel pipe and can adapt to the clamping and positioning of steel pipes of different diameters. Then, by forcing the two sets of clamping units to approach each other, the ends of the two steel pipes move to abut each other, and the welding operation of the two steel pipes can be conveniently performed. During the welding operation, the inner ring plate and the outer ring plate can rotate circumferentially around the central axis of the first ring frame together, thereby driving the steel pipes to rotate circumferentially, so as to smoothly weld and fix the outer edges of the two steel pipes. The operation is convenient and efficient, and it helps to improve the forming quality of the welding operation.

[0011] Optionally, the rotating arm plate includes a connecting portion, an intermediate portion, and a load-bearing portion that are sequentially arranged, the rotating arm plate being rotatably connected to the outer ring plate via a rotating shaft, the rotating shaft being arranged at the intermediate portion; the end portion of the connecting portion is rotatably connected to a sliding block, a side of the clamping seat away from the central axis of the inner ring plate is provided with a sliding groove, and the sliding block is slidably arranged in the sliding groove;

[0012] The load-bearing part is located on the side of the rotating arm plate close to the pushing mechanism. When the pushing mechanism moves toward the rotating arm plate, the pushing mechanism gradually contacts the load-bearing parts and forces the connecting parts to rotate toward the inner ring plate.

[0013] By adopting the above-mentioned technical solution, the rotating arm plate is rotatably connected to the outer ring plate through the rotating shaft in the middle part. When the driving mechanism is activated and drives the pushing mechanism to move in the direction close to the first ring frame, the pushing mechanism can first press against each load-bearing part and force each load-bearing part to rotate in the direction away from the central axis of the inner ring plate. By utilizing the lever principle, each connecting part can be rotated in the direction close to the central axis of the inner ring plate, thereby driving each clamping seat to move inward and close together, so as to achieve stable clamping and positioning of the steel pipe.

[0014] Optionally, the pushing mechanism includes a pushing seat rotatably mounted on the inner side of the second ring frame, and the outer diameter of the pushing seat gradually increases from one end close to the first ring frame to the other end. When the driving mechanism is activated, the outer peripheral wall of the pushing seat gradually abuts against each load-bearing part.

[0015] By adopting the above technical solution, by gradually increasing the outer diameter of the pushing seat from one end close to the first ring frame to the other end, when the pushing seat moves in the direction close to the first ring frame, the outer wall of the pushing seat can gradually abut against the load-bearing part of each rotating arm plate, thereby driving each clamping seat to move inward and retract against each other.

[0016] Optionally, the outer peripheral wall of the push seat is provided with multiple groups of guide rails, and each group of guide rails is arranged corresponding to each rotating arm plate; wherein, each guide rail includes two rail plates, and the distance between the two rail plates gradually decreases from one end of the rail plate close to the first ring frame to the other end, and the rotating arm plate is normally located between the two rail plates of the corresponding guide rail.

[0017] By adopting the above technical solution, since the rotating arm plate is normally located between the two track plates of the corresponding guide track, when the push seat moves toward the first ring frame, the rotating arm plate can match and enter the area between the two track plates, and then when the push seat is driven to rotate, the inner ring plate and the outer ring plate can rotate together with the push seat, so as to facilitate the smooth welding and fixing of the outer edges of the two steel pipes.

[0018] Optionally, the pushing mechanism also includes a toothed plate fixedly connected to the pushing seat, and a gear ring portion is provided on the outer peripheral surface of the toothed plate; the second ring frame is fixed with a rotating motor, and the rotating motor is electrically connected to a foot switch for controlling the start and stop; the output shaft of the rotating motor is fixedly connected with a driving gear, and the driving gear and the gear ring portion are engaged with each other for transmission.

[0019] By adopting the above-mentioned technical solution, when the rotating motor is operating, the driving gear can drive the gear ring part meshing with it to rotate, and then the push seat fixed to the toothed seat can be made to rotate circumferentially around its own central axis to realize the circumferential rotation of the steel pipe; based on this, the direction position of the steel pipe can be adjusted before welding, and the steel pipe can also be made to rotate circumferentially during the welding operation, so as to facilitate the welding and fixing of the outer edges of the two steel pipes.

[0020] Optionally, the clamping unit further includes a clamp main board, the first ring frame is fixed to the clamp main board, and the second ring frame is slidably mounted on the clamp main board;

[0021] The driving mechanism includes a connecting rod, a first spring, and a rotating wheel component, wherein the connecting rod is movably provided on the first ring frame, and one end of the connecting rod is fixedly connected to the second ring frame; the first spring is provided between the first ring frame and the second ring frame, and is used to force the second ring frame to normally move in a direction away from the first ring frame;

[0022] The rotating wheel component is rotatably installed on the clamp main board, and a chain belt structure is provided on the outer peripheral side of the rotating wheel component. The rotating wheel component is connected to the end of the connecting rod component away from the second ring frame through the chain belt structure, which is used to drive the second ring frame to move; a retaining mechanism is also provided on the inner side of the first ring frame for limiting the second ring frame from moving in a direction away from the first ring frame.

[0023] By adopting the above-mentioned technical solution, after the steel pipe is placed on the inner side of the inner ring plate, the operator can manually rotate the wheel component and use the chain belt structure to pull the connecting rod to move, thereby driving the second ring frame to gradually move in the direction close to the first ring frame, so that the push seat gradually abuts against each rotating arm plate; and the setting of the holding mechanism can limit the second ring frame from retreating backward, so that the push seat can remain in contact with the rotating arm plate, thereby maintaining the clamping position of the clamping seat on the steel pipe.

[0024] Optionally, the retaining mechanism includes a movable plug post movably inserted in the first ring frame and a second spring provided between the movable plug post and the first ring frame, the second spring being used to force the movable plug post to normally abut against the connecting rod;

[0025] One end of the movable plug-in column is provided with a plug-in portion, and the side of the plug-in portion close to the second ring frame is provided with an inclined guide surface; the outer peripheral surface of the connecting rod is provided with a plurality of concave ring grooves, and each concave ring groove is arranged at intervals along the axial direction of the connecting rod, and the width of each concave ring groove is adapted to the width of the plug-in portion; the end of the movable plug-in column away from the plug-in portion is exposed at the bottom of the first ring frame.

[0026] By adopting the above-mentioned technical solution, the movable plug post in this embodiment can automatically engage the plug-in portion in the concave annular groove under the elastic force of the second spring. Furthermore, because the first spring constantly exerts a force forcing the second ring frame to move away from the first ring frame, the side surface of the plug-in portion can maintain contact with the inner wall of the concave annular groove, thereby limiting the free movement of the connecting rod and thereby maintaining the position of the second ring frame and the push seat. When the operator rotates the rotating wheel component, the second ring frame is forced to move toward the first ring frame. At this time, the inner wall of the concave annular groove can partially abut against the inclined guide surface, thereby guiding the plug-in portion to gradually disengage from the concave annular groove. Based on this, after the connecting rod moves forward, the plug-in portion can engage with the next concave annular groove, thereby achieving unidirectional movement of the connecting rod. In addition, after welding is completed, force is applied to the exposed end of the movable plug-in column so that the plug-in part of the movable plug-in column can be smoothly disengaged from the concave ring groove. At this time, the second ring frame can automatically reset under the elastic force of the first spring, and the push seat can release the clamping and positioning of the steel pipe after disengaging from each rotating arm plate, so as to facilitate the removal of the steel pipe after welding.

[0027] Optionally, the clamping unit also includes a clamp main board, the first ring frame is fixed to the clamp main board, and the second ring frame is slidably installed on the clamp main board; a sliding seat is provided on the side of each clamp main board; two supporting seats are fixed on the top of the tooling base plate, and each supporting seat is provided with a sliding track, and the two sliding tracks are inclined downward and close to each other; the two sliding seats are respectively slidably installed on the two sliding rails, and a telescopic rod group is commonly connected between the two clamp main boards, and the axial direction of the telescopic rod group is set in the same direction as the horizontal direction; the tooling base plate is also provided with a lifting mechanism for driving the sliding seat to move.

[0028] By adopting the above-mentioned technical solution, the setting of the telescopic rod group can connect the two clamp main boards to each other and be in the same horizontal position. After the two steel pipes are respectively fixed to the two sets of clamping units, the lifting mechanism is controlled to drive the clamp main board to move. When the clamp main board gradually moves down along the sliding track, the two steel pipes can be brought closer to each other and finally maintain a mutual abutment state, so that the operator can perform welding operations on the two steel pipes.

[0029] Optionally, the lifting mechanism includes a lifting component fixed to the tooling base plate and a horizontal top plate connected to the movable end of the lifting component. The side of the sliding seat away from the fixture main board is provided with an extension portion, and the extension portion normally rests against the horizontal top plate under the action of gravity.

[0030] By adopting the above-mentioned technical solution, the lifting component in this embodiment is normally in an extended state, and the clamp main board causes the sliding seat to normally rest against the horizontal top plate under the action of its own gravity; when the lifting component retracts inward, the horizontal top plate moves downward and separates from the sliding seat, and the sliding seat can gradually move downward along the sliding track under the action of its own gravity, and finally the two clamp main boards can cause the two steel pipes to abut against each other under the action of gravity, which can facilitate the welding operation of the two steel pipes and also easily adjust the angle of a certain steel pipe, making it more convenient to use.

[0031] Optionally, the sliding track is provided with a sliding groove for the sliding seat to slide and install, the top of the sliding track is provided with a notch for the sliding seat to enter the sliding groove, and the top of the sliding track is slidably connected to a sliding cover, which normally rests against the side wall of the notch under the action of gravity to close the notch.

[0032] By adopting the above-mentioned technical solution, after the two special-shaped pipes are welded on the welding positioning fixture, the special-shaped pipes are partially bent and difficult to be directly removed from the clamping unit. At this time, the operator can manually force the sliding cover to move to open the gap, and the sliding seat can be disengaged from the sliding groove through the gap, so that the clamping unit can smoothly disengage from the sliding track; however, the moving clamping unit can make it pass smoothly through the bent part of the special-shaped pipe, and then the welded steel pipe can be smoothly removed from the welding positioning fixture.

[0033] In summary, this application includes at least one of the following beneficial technical effects:

[0034] 1. By setting up multiple groups of clamping seats, the driving mechanism drives the pushing seats to move and then abut against each rotating arm plate, thereby forcing each clamping seat to move inward and close together to achieve a stable clamping of the steel pipe, and can adapt to the positioning of steel pipes of different diameters;

[0035] 2. By rotating the clamping mechanism inside the first ring frame, the inner and outer ring plates can rotate together around the central axis of the first ring frame during welding, thereby driving the steel pipes to rotate circumferentially, so as to smoothly weld and fix the outer edges of the two steel pipes. This is convenient and efficient to operate, and helps to improve the forming quality of the welding operation.

[0036] 3. By sliding the fixture main board onto the sliding track, the horizontal top plate will be separated from the sliding seat after the lifting mechanism is activated. The two fixture main boards can make the two steel pipes abut against each other under the action of gravity, which can facilitate the welding of the two steel pipes and the adjustment of the angle of a certain steel pipe, making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0038] Figure 22 is a schematic diagram of the back structure of a single-unit clamping unit in an embodiment of the present application;

[0039] Figure 3 This is a schematic structural diagram of the first ring frame and the clamping mechanism in an embodiment of the present application;

[0040] Figure 4 2 is a schematic diagram of a half-section structure of the clamping mechanism in an embodiment of the present application;

[0041] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0042] Figure 6 This is a structural diagram of the second ring frame and the pushing mechanism in the embodiment of the present application;

[0043] Figure 7 2 is a cross-sectional view of the first ring frame and the second ring frame in the embodiment of the present application, which mainly reflects the specific structure of the retaining mechanism;

[0044] Figure 8 yes Figure 7 Enlarged view of point A in the middle;

[0045] Figure 9 It is a schematic diagram of the front structure of a single-assembly clamping unit in an embodiment of the present application.

[0046] Explanation of reference numerals: 1, tooling base plate; 11, support seat; 12, sliding track; 121, sliding groove; 122, notch; 13, sliding cover; 14, lifting mechanism; 141, lifting component; 142, horizontal top plate;

[0047] 2. Clamping unit; 3. First ring frame; 31. Holding mechanism; 32. Movable plug post; 321. Connecting portion; 322. Inclined guide surface; 33. Second spring;

[0048] 4. Clamping mechanism; 41. Inner ring plate; 42. Outer ring plate; 43. Clamping seat; 431. Sliding slot; 44. Rotating arm plate; 441. Connecting portion; 442. Intermediate portion; 443. Load-bearing portion; 444. Rotating shaft; 445. Sliding block;

[0049] 5. Second ring frame; 6. Push mechanism; 61. Push seat; 62. Guide rail; 621. Track plate; 63. Toothed plate; 631. Ring gear; 64. Rotating motor; 65. Drive gear;

[0050] 7. Clamp main board; 71. Sliding seat; 711. Extension portion; 72. Telescopic rod assembly; 8. Driving mechanism; 81. Connecting rod; 811. Inner concave annular groove; 82. First spring; 83. Rotating wheel component; 84. Sprocket; 85. Chain link. DETAILED DESCRIPTION

[0051] The following is combined with Figure 1-9 This application is described in further detail.

[0052] The embodiment of the present application discloses a steel welding positioning tool for processing fitness equipment.

[0053] Reference Figure 1 A steel welding and positioning tool for fitness equipment processing includes a tool base 1 and clamping units 2. There are two sets of clamping units 2, which are mirror images of each other and arranged on the top of the tool base 1. The clamping units 2 include a first ring frame 3, a clamping mechanism 4, a second ring frame 5, a pushing mechanism 6, and a fixture main plate 7. Two support stands 11 are fixed to the top of the tool base 1. The two support stands 11 are spaced apart and are used to respectively mount two fixture main plates 7.

[0054] Also refer to Figure 2 Each support stand 11 is fixedly connected to a sliding track 12 at its top. The two sliding tracks 12 are inclined downward and close to each other. Each sliding track 12 is provided with a sliding groove 121. The extending direction of the sliding groove 121 is the same as that of the sliding track 12. A notch 122 is provided at the top of the sliding track 12, which is connected to the sliding groove 121. The connecting position of the notch 122 and the sliding groove 121 is close to the higher end of the sliding groove 121. In addition, a freely sliding cover 13 is installed on the top of the sliding track 12. The sliding direction of the cover 13 is the same as that of the sliding track 12. Since the sliding track 12 is inclined as a whole, the cover 13 can slide downward under its own gravity and eventually abut against the side wall of the notch 122, thereby keeping the notch 122 in a normally closed state. When the notch 122 needs to be opened, the cover 13 can be manually forced to slide upward to smoothly leave the notch 122.

[0055] Reference Figure 2 The side of the clamp main board 7 is provided with an integrally formed sliding seat 71. The width of the sliding seat 71 is not greater than the width of the notch 122, so that the sliding seat 71 can enter the interior of the sliding groove 121 through the notch 122, and the sliding seat 71 can move along the extension direction of the sliding groove 121; it can be understood that when the sliding seats 71 of the two clamp main boards 7 slide downward along the sliding groove 121, the two clamp main boards 7 can automatically approach each other, that is, the two groups of clamping units 2 can automatically approach each other. A telescopic rod group 72 is commonly connected between the two clamp main boards 7. The telescopic rod group 72 has a length telescopic function. Its structure is well known to those skilled in the art and is not the focus of protection in this case. It will not be elaborated here; the axial direction of the telescopic rod group 72 is the same as the horizontal direction, which can keep the two clamp main boards 7 at the same horizontal height.

[0056] The tooling base plate 1 is provided with a lifting mechanism 14, wherein the lifting mechanism 14 includes a lifting component 141 and a horizontal top plate 142. The lifting component 141 in this embodiment is configured as a cylinder. The lifting component 141 is fixedly mounted on the top surface of the tooling base plate 1, and the movable end of the lifting component 141 normally extends outward. There are two lifting components 141, and the movable ends of the two lifting components 141 are commonly connected to the horizontal top plate 142. The extension direction of the horizontal top plate 142 is the same as the horizontal direction. The side of the sliding seat 71 away from the clamp main board 7 is provided with an integrally formed extension portion 711. Under the action of gravity, the extension portions 711 of the two sliding seats 71 can normally rest against the horizontal top plate 142. Based on this, when the lifting component 141 is actuated, the horizontal top plate 142 moves downward and disengages from the two extension portions 711, and the two groups of clamping units 2 can slide downward and approach each other under the action of gravity.

[0057] Reference Figure 3 、 Figure 4 , the first ring frame 3 is fixed to the side of the clamp main plate 7 away from the sliding seat 71, so as to be slidably arranged on the top of the tooling base plate 1. The clamping mechanism 4 is rotatably arranged on the inner side of the first ring frame 3. Specifically, the clamping mechanism 4 includes an inner ring plate 41 and an outer ring plate 42 that are connected to each other. A plurality of clamping seats 43 are movably inserted into the outer peripheral wall of the inner ring plate 41. In this embodiment, the specific number of clamping seats 43 is 8. All clamping seats 43 are equidistantly arranged around the central axis of the inner ring plate 41, and the moving direction of the clamping seats 43 is the same as the radial direction of the inner ring plate 41. It can be understood that in other feasible embodiments, the number of clamping seats 43 can also be 6, 7 or 9, as long as it can achieve stable clamping and positioning of the steel pipe, and is not limited to the number shown in this embodiment.

[0058] In addition, it should be noted here that a reset member (not shown in the figure) is provided between each clamping seat 43 and the outer ring plate 42. The reset member can be a tension spring, a spring or a magnet provided between the clamping seat 43 and the outer ring plate 42, which can always generate a force acting on the clamping seat 43 and force the clamping seat 43 to move toward the direction close to the outer ring plate 42, so as to ensure that each clamping seat 43 is away from each other in the normal direction, which helps the smooth installation of the steel pipe.

[0059] The inner peripheral wall of the outer ring plate 42 is rotatably mounted with a plurality of rotating arm plates 44. The specific number of the rotating arm plates 44 is equal to the number of the clamping seats 43. Each rotating arm plate 44 is movably connected to each clamping seat 43. Figure 5The pivoting arm plate 44 comprises a connecting portion 441, an intermediate portion 442, and a load-bearing portion 443, which are arranged in sequence and integrally formed. A pivot shaft 444 is fixedly provided through the intermediate portion 442. The pivoting arm plate 44 is pivotally connected to the inner wall of the outer ring plate 42 via the pivot shaft 444. A wedge-shaped sliding block 445 is pivotally connected to the end of the connecting portion 441. A sliding groove 431 is defined on the side of the clamping seat 43 away from the central axis of the inner ring plate 41. The sliding groove 431 extends in the same direction as the axis of the inner ring plate 41. The sliding block 445 is engaged and can slide along the sliding groove 431.

[0060] Reference Figure 3 , the second ring frame 5 is slidably mounted on the fixture main board 7 through a slide rail, and the second ring frame 5 is coaxially arranged with the first ring frame 3; the second ring frame 5 is movably connected to the first ring frame 3 through a driving mechanism 8, which is used to force the second ring frame 5 to move in a direction close to the first ring frame 3; at the same time, referring to Figure 6 The pushing mechanism 6 is rotatably installed on the inner side of the second ring frame 5, and the load-bearing part 443 is located on the side of the rotating arm plate 44 close to the pushing mechanism 6. When the driving mechanism 8 is activated, the pushing mechanism 6 can gradually contact each rotating arm plate 44, thereby driving each clamping seat 43 to move inward until they are retracted.

[0061] Specific reference Figure 6 The driving mechanism 8 includes a connecting rod 81, a first spring 82 and a rotating wheel component 83. One end of the connecting rod 81 is fixedly connected to the second ring frame 5, and the other end of the connecting rod 81 is movably passed through the first ring frame 3 and extends to the side of the first ring frame 3 away from the second ring frame 5; the first spring 82 is sleeved on the connecting rod 81, and the first spring 82 is located between the first ring frame 3 and the second ring frame 5, which can always generate an elastic force acting on the second ring frame 5 and force the second ring frame 5 to move in the direction away from the first ring frame 3.

[0062] The wheel component 83 is rotatably mounted on the fixture main board 7, and a chain belt structure is provided between the wheel component 83 and the connecting rod component 81; the chain belt structure includes a sprocket 84 and a chain link 85, wherein the sprocket 84 is coaxially fixed to the wheel component 83, one end of the chain link 85 is fixed to the outer peripheral side of the sprocket 84, and the other end of the chain link 85 is wound around the sprocket 84 and connected to the end of the connecting rod component 81 away from the second ring frame 5, so that when the operator manually rotates the wheel component 83, the connecting rod component 81 can be smoothly pulled and the second ring frame 5 can be driven to move toward the direction close to the first ring frame 3.

[0063] Reference Figure 7 、 Figure 8A retaining mechanism 31 is also provided on the inner side of the first ring frame 3 to limit the movement of the second ring frame 5 away from the first ring frame 3. Specifically, the retaining mechanism 31 includes a movable plug 32 and a second spring 33. The movable plug 32 is movably inserted into the first ring frame 3, and the end of the movable plug 32 is provided with an integrally formed plug portion 321. The outer circumferential surface of the connecting rod 81 is provided with a plurality of concave annular grooves 811. All of the concave annular grooves 811 are equidistantly arranged along the axis of the connecting rod 81, and the width of each concave annular groove 811 is equal to the width of the plug portion 321. The second spring 33 is disposed between the movable plug 32 and the inner wall of the first ring frame 3, and can always generate an elastic force on the movable plug 32 to force the movable plug 32 to move toward the connecting rod 81, so that the plug portion 321 is inserted into one of the concave annular grooves 811, thereby limiting the movement of the connecting rod 81.

[0064] An inclined guide surface 322 is provided on the side of the plug-in portion 321 near the second ring frame 5. When an operator rotates the rotating wheel component 83, forcing the second ring frame 5 toward the first ring frame 3, the inner wall of the concave annular groove 811 abuts against the inclined guide surface 322, forcing the movable plug post 32 to move outward, thereby achieving unidirectional movement of the second ring frame 5 and clamping and positioning the steel pipe. Furthermore, the end of the movable plug post 32, away from the plug-in portion 321, is exposed at the bottom of the second ring frame 5. When the clamping and positioning of the steel pipe is to be released, force is applied to the exposed end of the movable plug post 32 to move it outward. After the plug-in portion 321 is disengaged from the concave annular groove 811, the second ring frame 5 automatically returns to its original position away from the first ring frame 3 under the elastic force of the first spring 82, thereby freeing each clamping seat 43 from the steel pipe, facilitating smooth removal of the steel pipe.

[0065] Back to Figure 6 Each pushing mechanism 6 includes a pushing seat 61 rotatably mounted inside the second ring frame 5. The pushing seat 61 is in the shape of a rotating cylinder, with its outer diameter gradually increasing from the end of the pushing seat 61 closest to the first ring frame 3 to the end farther from the first ring frame 3. Multiple sets of guide rails 62 are provided on the outer circumference of the pushing seat 61. The specific number of guide rails 62 is equal to the number of rotating arm plates 44, and each set of guide rails 62 can be provided for each rotating arm plate 44.

[0066] Specifically, each guide rail 62 includes two mirror-imaged rail plates 621, and the two rail plates 621 are spaced apart. The spacing between the two rail plates 621 gradually decreases from one end of the rail plate 621 close to the first ring frame 3 to the other end, and the minimum spacing between the two rail plates 621 is equal to the width of the rotating arm plate 44. It should be noted here that the rotating arm plate 44 can always be located between the two rail plates 621 of the corresponding guide rail 62.

[0067] Based on this, refer to Figure 3 、 Figure 6 When the operator rotates the wheel component 83 and drives the second ring frame 5 to move toward the first ring frame 3, the outer peripheral wall of the pushing seat 61 can gradually abut against each load-bearing part 443, and the lever principle is used to force the connecting part 441 to drive the clamping seat 43 to move inward, so that after the steel pipe is placed on the inner side of the inner ring plate 41, it can be stably clamped by each clamping seat 43 to complete the positioning; at the same time, the rotating arm plate 44 can gradually rotate under the guidance of the guide rail 62, and finally match into the rear end of the guide rail 62 and be limited by the two track plates 621, so that the clamping mechanism 4 can rotate together with the pushing seat 61.

[0068] Reference Figure 9 One set of pushing mechanisms 6 also includes a toothed plate 63, which is fixedly connected to the side of the pushing seat 61 and maintains a coaxial relationship with the pushing seat 61. The outer circumference of the toothed plate 63 is provided with a gear ring portion 631. The second ring frame 5 on which the pushing mechanism 6 is located is fixed with a rotary motor 64. A drive gear 65 is coaxially fixed to the output shaft of the rotary motor 64. The drive gear 65 and the gear ring portion 631 mesh with each other for transmission. The rotary motor 64 is also connected to a foot switch (not shown in the figure), which can be used to control the start and stop of the rotary motor 64.

[0069] Based on this, after the two steel pipes are clamped and fixed to the two sets of clamping units 2 respectively, by making the clamp main board 7 slide naturally along the sliding groove 121, the two steel pipes can naturally abut against each other under the action of gravity; at this time, if there is a requirement for the welding angle between the two steel pipes, the operator manually lifts the clamping unit 2 upwards, and the two steel pipes can be separated from each other. At this time, by stepping on the foot switch to drive one of the steel pipes to rotate, the welding angle between the two steel pipes can be smoothly adjusted. In addition, during the welding operation, after the abutment of the two steel pipes is partially welded, the two sets of clamping mechanisms 4 can be rotated together by stepping on the foot switch, which is conducive to welding and fixing the outer edges of the two steel pipes. The operation is convenient and efficient.

[0070] The above are preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A steel welding and positioning tool for fitness equipment processing, characterized by: The invention comprises a tooling base plate (1) and two groups of clamping units (2) arranged on the tooling base plate (1), wherein the two groups of clamping units (2) are arranged in a mirror image; the clamping units (2) comprise a first ring frame (3), a clamping mechanism (4), a second ring frame (5) and a pushing mechanism (6); the first ring frame (3) is slidably arranged on the top of the tooling base plate (1), and the clamping mechanism (4) is rotatably arranged on the inner side of the first ring frame (3); The clamping mechanism (4) comprises an inner ring plate (41) and an outer ring plate (42) connected to each other, a plurality of clamping seats (43) are movably inserted into the outer peripheral wall of the inner ring plate (41), and the moving direction of the clamping seats (43) is the same as the radial direction of the inner ring plate (41); a plurality of rotating arm plates (44) are rotatably installed on the inner peripheral wall of the outer ring plate (42), and each of the rotating arm plates (44) is movably connected to each of the clamping seats (43); The second ring frame (5) is movably connected to the first ring frame (3) through a driving mechanism (8), the second ring frame (5) and the first ring frame (3) are coaxially arranged, and the driving mechanism (8) is used to force the second ring frame (5) to move in a direction close to the first ring frame (3); the pushing mechanism (6) is rotatably installed on the inner side of the second ring frame (5), and when the driving mechanism (8) is activated, the pushing mechanism (6) gradually abuts against each rotating arm plate (44) to force each clamping seat (43) to move inward and clamp the steel pipe together; The rotating arm plate (44) includes a connecting portion (441), an intermediate portion (442) and a load-bearing portion (443) which are sequentially arranged. The rotating arm plate (44) is rotatably connected to the outer ring plate (42) via a rotating shaft (444), and the rotating shaft (444) is arranged at the intermediate portion (442). The end of the connecting portion (441) is rotatably connected to a sliding block (445). A sliding groove (431) is provided on the side of the clamping seat (43) away from the central axis of the inner ring plate (41), and the sliding block (445) is slidably arranged in the sliding groove (431). The load-bearing portion (443) is located on a side of the rotating arm plate (44) close to the pushing mechanism (6). When the pushing mechanism (6) moves in a direction close to the rotating arm plate (44), the pushing mechanism (6) gradually abuts against each load-bearing portion (443) and forces each connecting portion (441) to rotate in a direction close to the inner ring plate (41). The pushing mechanism (6) includes a pushing seat (61) rotatably mounted on the inner side of the second ring frame (5), the outer diameter of the pushing seat (61) gradually increases from one end close to the first ring frame (3) to the other end, and when the driving mechanism (8) is in operation, the outer peripheral wall of the pushing seat (61) gradually abuts against each load-bearing portion (443); The outer peripheral wall of the pushing seat (61) is provided with a plurality of groups of guide rails (62), and each group of the guide rails (62) is arranged corresponding to each rotating arm plate (44); wherein each of the guide rails (62) includes two rail plates (621), and the distance between the two rail plates (621) gradually decreases from one end of the rail plate (621) close to the first ring frame (3) to the other end, and the rotating arm plate (44) is normally located between the two rail plates (621) corresponding to the guide rail (62); The clamping unit (2) further comprises a clamp main plate (7), the first ring frame (3) is fixed to the clamp main plate (7), and the second ring frame (5) is slidably mounted on the clamp main plate (7); a sliding seat (71) is provided on the side surface of each clamp main plate (7); Two supporting seats (11) are fixed on the top of the tooling base plate (1), and each supporting seat (11) is provided with a sliding track (12), and the two sliding tracks (12) are arranged to be inclined downward and close to each other; the two sliding seats (71) are respectively slidably installed on the two sliding tracks (12), and a telescopic rod group (72) is commonly connected between the two clamp main boards (7), and the axial direction of the telescopic rod group (72) is arranged in the same direction as the horizontal direction; the tooling base plate (1) is also provided with a lifting mechanism (14) for driving the sliding seat (71) to move.

2. The steel welding positioning tool according to claim 1, characterized in that: The pushing mechanism (6) further comprises a toothed plate (63) fixedly connected to the pushing seat (61), wherein the outer peripheral surface of the toothed plate (63) is provided with a gear ring portion (631); the second ring frame (5) is fixed with a rotating motor (64), wherein the rotating motor (64) is electrically connected to a foot switch for controlling start and stop; the output shaft of the rotating motor (64) is fixedly connected with a driving gear (65), wherein the driving gear (65) and the gear ring portion (631) are meshed with each other for transmission.

3. The steel welding positioning tool according to claim 1, characterized in that: The clamping unit (2) further comprises a clamp main board (7), the first ring frame (3) is fixed to the clamp main board (7), and the second ring frame (5) is slidably mounted on the clamp main board (7); The driving mechanism (8) comprises a connecting rod (81), a first spring (82) and a rotating wheel component (83), wherein the connecting rod (81) is movably arranged on the first ring frame (3), and one end of the connecting rod (81) is fixedly connected to the second ring frame (5); the first spring (82) is arranged between the first ring frame (3) and the second ring frame (5) and is used to force the second ring frame (5) to normally move in a direction away from the first ring frame (3); The rotating wheel component (83) is rotatably mounted on the fixture mainboard (7); a chain belt structure is provided on the outer peripheral side of the rotating wheel component (83); the rotating wheel component (83) is connected to an end of the connecting rod component (81) away from the second ring frame (5) through the chain belt structure, and is used to drive the second ring frame (5) to move; and a holding mechanism (31) is also provided on the inner side of the first ring frame (3) for limiting the second ring frame (5) from moving in a direction away from the first ring frame (3).

4. The steel welding positioning tool according to claim 3, characterized in that: The holding mechanism (31) comprises a movable plug post (32) movably inserted into the first ring frame (3) and a second spring (33) arranged between the movable plug post (32) and the first ring frame (3), wherein the second spring (33) is used to force the movable plug post (32) to normally abut against the connecting rod (81); One end of the movable plug post (32) is provided with a plug-in portion (321), and a side surface of the plug-in portion (321) close to the second ring frame (5) is provided with an inclined guide surface (322); the outer peripheral surface of the connecting rod (81) is provided with a plurality of concave ring grooves (811), each of the concave ring grooves (811) is arranged at intervals along the axial direction of the connecting rod (81), and the width of each concave ring groove (811) is adapted to the width of the plug-in portion (321); one end of the movable plug post (32) away from the plug-in portion (321) is exposed at the bottom of the first ring frame (3).

5. The steel welding positioning tool according to claim 1, characterized in that: The lifting mechanism (14) includes a lifting component (141) fixed to the tooling base plate (1) and a horizontal top plate (142) connected to the movable end of the lifting component (141); the side of the sliding seat (71) away from the clamp main plate (7) is provided with an extension portion (711); the extension portion (711) normally rests against the horizontal top plate (142) under the action of gravity.

6. The steel welding positioning tool according to claim 1, characterized in that: The sliding track (12) is provided with a sliding groove (121) for the sliding seat (71) to be slidably installed, and the top of the sliding track (12) is provided with a notch (122) for the sliding seat (71) to enter the sliding groove (121), and the top of the sliding track (12) is slidably connected to a sliding cover (13), and the sliding cover (13) normally abuts against the side wall of the notch (122) under the action of gravity to close the notch (122).

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