Rotary cultivator spindle adjustable welding fixture

Abstract

The utility model relates to positioning fixture technical field, including workbench, the workbench is fixed with main shaft positioning structure, the workbench is horizontally slid along the axial direction of main shaft and is equipped with the cutter seat supply seat, the cutter seat supply seat is also set up along the vertical direction and lifts, the upper end of cutter seat supply seat is equipped with the storage groove, the storage groove is horizontally slid and is equipped with the push -plate, one end of storage groove is detachably installed with the feeding plate, the feeding plate is obliquely upwards and is equipped with the feeding inclined plane along the feeding direction of push -plate, and the lower end of feeding inclined plane is flush with the bottom surface of storage groove. The utility model solves the problem that the main shaft of rotary cultivator is welded with the cutter seat in traditional technology, and the fixture is single clamped and welded every time, then retreats and takes the material position and clamps the cutter seat again, the back and forth stroke is longer, and the welding efficiency of the cutter seat and the main shaft of rotary cultivator is lowered.

Description

Technical Field

[0001] This utility model relates to the field of positioning clamp technology, specifically to an adjustable welding clamp for the main shaft of a rotary tiller. Background Technology

[0002] A rotary tiller's rotary shaft generally consists of three parts: the main rotary shaft, the blade holder, and the rotary blades. The blade holder is welded to the main rotary shaft according to a certain pattern, and the rotary blades are fixed to the blade holder with bolts.

[0003] Currently, the welding process between the cutterhead and the rotary tiller spindle generally involves manual loading and positioning. The welding positions of the cutterheads are manually located according to their distribution pattern, and then fixed by welding with a welding torch. However, there is significant room for improvement in both the efficiency of manual loading and the accuracy of the positioning process.

[0004] A prior art patent with publication number CN221833716U discloses a solution including a frame with a horizontally arranged linear slide rail mounted on it. One end of the linear slide rail has a spindle box, and the other end has a tailstock slidably mounted on it. A tool holder storage mechanism is located on the side of the tailstock, and a gripping assembly mechanism is located above the tailstock. The tool holder storage mechanism includes a rotary table with multiple circumferentially distributed tool holder placement holes. The gripping assembly mechanism includes a horizontally arranged hand-grip transverse slide rail with a slidably connected hand-grip transverse slider. A hand-grip lifting cylinder, vertically downward-facing, is mounted on the hand-grip transverse slider, and a pneumatic gripper is mounted on the head of the hand-grip lifting cylinder. The welding fixture provided by this utility model can automatically feed the tool holder and automatically position the tool holder for welding, assisting welding, improving the efficiency of rotary tiller spindle welding, and ensuring the quality of the rotary tiller spindle.

[0005] The shortcomings of existing technology have gradually become apparent with use, mainly in the following aspects:

[0006] First, when welding the existing rotary tiller spindle to the cutter holder, the clamp holds and welds the cutter holder individually each time, and then retracts to the material pick-up position to pick up the cutter holder again. The back-and-forth stroke is long, which reduces the welding efficiency between the cutter holder and the rotary tiller spindle.

[0007] Secondly, because the main shaft and cutter head of different rotary tillers are of different sizes, the existing clamping feeding structure cannot be positioned according to different cutter head models, which makes it easy for the cutter head to be skewed during the feeding process, thereby reducing the welding quality between the cutter head and the rotary tiller main shaft.

[0008] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0009] To address the shortcomings of existing technologies, this utility model provides an adjustable welding fixture for rotary tiller spindles. This fixture solves the problem that in traditional technologies, when welding the rotary tiller spindle to the cutter holder, the fixture clamps and welds each cutter holder individually before retracting to the material pick-up position to re-clamp the cutter holder. This results in a long back-and-forth stroke and low welding efficiency between the cutter holder and the rotary tiller spindle.

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] An adjustable welding fixture for the main shaft of a rotary tiller includes a worktable. A main shaft positioning structure is fixed on the worktable. A tool holder supply seat is horizontally slidable along the axial direction of the main shaft on the worktable. The tool holder supply seat is also vertically adjustable.

[0012] The upper end of the tool holder supply seat is provided with a storage trough, and a push plate is horizontally slidably provided in the storage trough. A feeding plate is detachably installed at one end of the storage trough. The feeding plate is inclined upward along the feeding direction of the push plate and has a feeding slope. The lower end of the feeding slope is flush with the bottom surface of the storage trough.

[0013] As an optimized solution, width positioning plates are detachably connected to the opposite inner walls of the storage tank.

[0014] As an optimized solution, the distance between the two ends of the feed plate along the push plate feed direction is the same as the distance between the two ends of the tool holder along the push plate feed direction.

[0015] As an optimized solution, the lower end of the feeding plate is fixedly connected to an insert post, and the bottom surface of the storage tank is provided with an insert groove that matches the insert post.

[0016] As an optimized solution, positioning grooves are respectively provided side by side on the inner walls of the storage tank, a first magnetic absorbing piece is fixedly connected in the positioning groove, and a second magnetic absorbing piece that cooperates with the first magnetic absorbing piece is fixedly connected to the back of the width positioning plate.

[0017] As an optimized solution, the spindle positioning structure includes two supports fixedly connected in parallel to the worktable, one of which is rotatably equipped with a three-jaw chuck, and the other support is axially movable with a center.

[0018] As an optimized solution, a drive motor is fixedly connected to the outer wall of one of the brackets, and the output shaft of the drive motor is fixedly connected to the back of the three-jaw chuck.

[0019] As an optimized solution, another of the brackets is horizontally threaded with a feed screw, one end of which is fixedly connected to a handle and the other end to a turntable, the rotating end of which is fixedly connected to the back of the tip.

[0020] As an optimized solution, the bracket on which the tip is mounted has a clearance channel to avoid the tool holder supply seat.

[0021] As an optimized solution, a bottom rectangular sliding hole is provided on the worktable along the sliding direction of the tool holder supply seat. A connecting plate is slidably arranged in parallel in the bottom rectangular sliding hole. A bottom drive screw that is threadedly connected to the connecting plate is provided on the lower surface of the worktable. A feed seat located above the worktable is fixed to the upper end of the connecting plate. The tool holder supply seat is connected to the feed seat through a lifting structure.

[0022] As an optimized solution, two first end seats are fixedly connected side by side to the lower surface of the worktable, and the two ends of the bottom drive screw are rotatably mounted on the two first end seats. A first motor that drives the bottom drive screw to rotate is fixedly connected to the outer wall of one of the first end seats.

[0023] As an optimized solution, the lifting structure includes vertical lead screws fixedly connected in parallel to both ends of the feed seat, and drive plates that are threadedly connected to the vertical lead screws are fixedly connected to both ends of the tool holder supply seat.

[0024] As an optimized solution, guide seats are vertically fixed at both ends of the feed seat, and guide rails are vertically fixed on the guide seats. A guide groove matching the guide rail is opened on the end of the drive plate. Second end seats are fixedly connected side by side at the upper and lower ends of the guide seats. The two ends of the vertical lead screw are rotatably mounted on the two second end seats. A second motor that drives the vertical lead screw to rotate is fixedly connected to the upper second end seat.

[0025] As an optimized solution, a limiting sleeve fitted onto the vertical lead screw is fixed to the lower surface of the drive plate.

[0026] As an optimized solution, the bottom of the storage tank is provided with a top rectangular sliding hole, the push plate is horizontally slidably installed in the top rectangular sliding hole, and a top drive screw is horizontally rotatably provided below the knife holder supply seat, and the lower end of the push plate is threadedly connected to the top drive screw.

[0027] As an optimized solution, two third end seats are fixedly connected side by side to the lower surface of the tool holder supply seat, and the two ends of the top drive screw are rotatably mounted on the two third end seats, with a third motor for driving the top drive screw to rotate fixedly connected to one of the third end seats.

[0028] Compared with the prior art, the beneficial effects of this utility model are:

[0029] By setting a three-jaw chuck and a center that moves along the axis, the spindle is clamped and fixed, and the spindle is rotated by driving the three-jaw chuck with a drive motor.

[0030] By arranging the tool holders in an orderly manner in the storage tank, the first motor drives the tool holder supply seat to move horizontally to below the main shaft, so that the loading plate is located below the position of the tool holder to be welded on the main shaft. Then, the third motor drives the push plate to move, pushing several tool holders toward the loading plate. The tool holder closest to the loading plate will be lifted under the action of the loading slope, so that the upper end of the lifted tool holder will be higher than the upper end of the other tool holders, thus avoiding the welding position. Then, the second motor uses the drive plate to drive the tool holder supply seat to rise, aligning the upper end of the lifted tool holder with the main shaft. Then, the welding gun is used to weld and fix the main shaft and the tool holder.

[0031] When welding the next tool holder, the drive motor rotates the spindle and reverses its direction. The first motor drives the tool holder supply seat to move so that the tool holder is aligned with the welding position of the next spindle. The storage tank is used to feed several tool holders sequentially, which overcomes the problem that only one tool holder can be transported at a time in the traditional technology.

[0032] The inner walls of the storage tank are detachably connected to a width positioning plate and a detachable feeding plate. The corresponding width positioning plate and feeding plate can be selected according to the width and thickness of different types of cutter holders to meet the feeding needs of cutter holders of different sizes and overcome the phenomenon of skewing during the feeding process caused by excessive gap. Attached Figure Description

[0033] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0034] Figure 1 This is a schematic diagram of the structure of this utility model;

[0035] Figure 2 This is a top view of the structure of the width positioning plate of this utility model;

[0036] Figure 3 This is a schematic diagram of the feeding plate of this utility model.

[0037] In the diagram: 1-Workbench; 2-Bottom rectangular sliding hole; 3-Bottom drive screw; 4-Connecting plate; 5-First motor; 6-Tool holder supply seat; 7-Storage trough; 8-Push plate; 9-Tool holder; 10-Spindle; 11-Three-jaw chuck; 12-Bracket; 13-Driver; 14-Center; 15-Feed screw; 16-Handle; 17-Allowing channel; 18-Locking nut; 19-Width positioning plate; 20-Feeding plate; 21-Insertion column; 22-Top rectangular sliding hole; 23-First magnetic suction plate; 24-Second magnetic suction plate; 25-Feed seat; 26-Limit sleeve; 27-Insertion column; 28-Feeding inclined surface; 29-Bottom drive screw; 30-Second motor; 31-Drive plate; 32-Vertical screw; 33-Third motor. Detailed Implementation

[0038] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0039] like Figures 1 to 3 As shown, the adjustable welding fixture for the rotary tiller spindle includes a worktable 1, on which a positioning structure for the spindle 10 is fixed. A tool holder supply seat 6 is horizontally slidable along the axial direction of the spindle 10 on the worktable 1, and the tool holder supply seat 6 is also vertically adjustable.

[0040] The upper end of the tool holder supply seat 6 is provided with a storage trough 7. A push plate 8 is horizontally slidably provided in the storage trough 7. A feeding plate 20 is detachably installed at one end of the storage trough 7. The feeding plate 20 is inclined upward along the feeding direction of the push plate 8 and has a feeding slope 28. The lower end of the feeding slope 28 is flush with the bottom surface of the storage trough 7.

[0041] Width positioning plates 19 are detachably connected to the inner walls of the storage tank 7.

[0042] The distance between the two ends of the feeding plate 20 along the feed direction of the push plate 8 is the same as the distance between the two ends of the tool holder along the feed direction of the push plate 8.

[0043] The lower end of the feeding plate 20 is fixed with an insert post, and the bottom surface of the storage tank 7 is provided with an insert groove that matches the insert post.

[0044] Positioning grooves are respectively provided on the inner walls of the storage tank 7. A first magnetic piece is fixedly connected in the positioning groove. A second magnetic piece 24 that cooperates with the first magnetic piece 23 is fixedly connected to the back of the width positioning plate 19.

[0045] The positioning structure of the spindle 10 includes two supports 12 fixedly connected in parallel to the worktable 1. One support 12 is rotatably provided with a three-jaw chuck 11, and the other support 12 is provided with a center 14 that moves axially.

[0046] One of the brackets 12 has a drive motor 13 fixedly connected to its outer wall, and the output shaft of the drive motor 13 is fixedly connected to the back of the three-jaw chuck 11.

[0047] Another bracket 12 is connected to a feed screw 15 by a horizontal thread. One end of the feed screw 15 is fixed to a handle 16, and the other end is fixed to a turntable. The rotating end of the turntable is fixed to the back of the tip 14. A locking nut 18 is threaded onto the feed screw 15 and abuts against the bracket 12.

[0048] The bracket 12, on which the tip 14 is mounted, has a clearance channel 17 for the clearance tool holder supply seat 6.

[0049] The worktable 1 has a bottom rectangular sliding hole 2 along the sliding direction of the tool holder supply seat 6. A connecting plate 4 is slidably arranged in parallel in the bottom rectangular sliding hole 2. The lower surface of the worktable 1 is provided with a bottom drive screw that is threadedly connected to the connecting plate 4. The upper end of the connecting plate 4 is fixedly connected to the feed seat 25 located above the worktable 1. The tool holder supply seat 6 is connected to the feed seat 25 through a lifting structure.

[0050] The opposite sidewalls of the connecting plate 4 are in frictional contact with the opposite sidewalls of the bottom rectangular sliding hole 2.

[0051] Two first end seats are fixedly connected side by side to the lower surface of the worktable 1. The two ends of the bottom drive screw are rotatably mounted on the two first end seats. A first motor 5 that drives the bottom drive screw to rotate is fixedly connected to the outer wall of one of the first end seats.

[0052] The lifting structure includes vertical lead screws 32 fixedly connected to both ends of the feed seat 25, and drive plates 31 that are threadedly connected to the vertical lead screws 32 are fixedly connected to both ends of the tool holder supply seat.

[0053] The feed seat 25 has guide seats vertically fixed at both ends, and guide rails are vertically fixed on the guide seats. The drive plate 31 has a guide groove that matches the guide rail at its end. The upper and lower ends of the guide seats are fixedly connected to second end seats in parallel. The two ends of the vertical lead screw 32 are rotatably mounted on the two second end seats. The second motor 30 that drives the vertical lead screw 32 to rotate is fixedly connected to the upper second end seat.

[0054] A limiting sleeve 26, which is fitted onto the vertical lead screw 32, is fixed to the lower surface of the drive plate 31.

[0055] The bottom of the storage tank 7 is provided with a top rectangular sliding hole 22. The push plate 8 is horizontally slidably installed in the top rectangular sliding hole 22. The bottom of the knife holder supply seat 6 is provided with a top drive screw that rotates horizontally. The lower end of the push plate 8 is threadedly connected to the top drive screw.

[0056] The opposite sidewalls of the push plate 8 are in frictional contact with the opposite sidewalls of the top rectangular sliding hole 22.

[0057] Two third end seats are fixedly connected side by side to the lower surface of the tool holder supply seat 6. The two ends of the top drive screw are rotatably mounted on the two third end seats. A third motor 33 for driving the top drive screw to rotate is fixedly connected to one of the third end seats.

[0058] The working principle of this device is as follows:

[0059] By setting a three-jaw chuck 11 and a center 14 that moves along the axial direction, the spindle 10 is clamped and fixed, and the drive motor 13 drives the three-jaw chuck 11 to rotate, thereby rotating the spindle 10.

[0060] By arranging the tool holders 9 in an orderly manner in the storage tank 7, the first motor 5 drives the tool holder supply seat 6 to move horizontally to below the main shaft 10, so that the loading plate 20 is located below the position of the tool holder to be welded on the main shaft 10. Then, the third motor 33 drives the push plate 8 to move, pushing several tool holders 9 toward the loading plate 20. The tool holder 9 closest to the loading plate 20 will be lifted under the action of the loading inclined surface 28, so that the upper end of the lifted tool holder 9 will be higher than the upper end of the other tool holders 9, thus avoiding the welding position. Then, the second motor 30 uses the drive plate 31 to drive the tool holder supply seat 6 to rise, aligning the upper end of the lifted tool holder 9 with the main shaft 10. Then, the welding gun is used to weld and fix the main shaft 10 and the tool holder.

[0061] When welding the next tool holder, the drive motor 13 rotates the spindle 10 and reverses its direction. The first motor 5 drives the tool holder supply seat to move so that the tool holder is aligned with the welding position of the next spindle 10. The storage tank 7 is used to feed several tool holders 9 sequentially, which overcomes the problem that only one tool holder 9 can be transported at a time in the traditional technology.

[0062] The inner walls of the storage tank 7 are detachably connected to a width positioning plate 19 and a feeding plate 20, respectively. The width positioning plate 19 and the feeding plate 20 can be selected according to the width and thickness of different types of knife holders 9 to meet the material supply needs of different sized knife holders and overcome the phenomenon of skewing during the feeding process caused by excessive gap.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. An adjustable welding fixture for the main shaft of a rotary tiller, characterized in that: Includes a worktable (1), on which a spindle (10) positioning structure is fixed, and a tool holder supply seat (6) is horizontally slidable along the axial direction of the spindle (10) on the worktable (1), and the tool holder supply seat (6) is also vertically movable. The upper end of the tool holder supply seat (6) is provided with a storage trough (7), and a push plate (8) is horizontally slidably provided in the storage trough (7). A feeding plate (20) is detachably installed at one end of the storage trough (7). The feeding plate (20) is inclined upward along the feeding direction of the push plate (8) and has a feeding slope (28). The lower end of the feeding slope (28) is flush with the bottom surface of the storage trough (7).

2. The adjustable welding fixture for the rotary tiller spindle according to claim 1, characterized in that: Width positioning plates (19) are detachably connected to the inner walls of the storage tank (7).

3. The adjustable welding fixture for the rotary tiller spindle according to claim 2, characterized in that: The lower end of the feeding plate (20) is fixed with an insert post, and the bottom surface of the storage tank (7) is provided with an insert groove that matches the insert post.

4. The adjustable welding fixture for the rotary tiller spindle according to claim 3, characterized in that: Positioning grooves are respectively provided on the inner walls of the storage tank (7), and a first magnetic absorbing piece is fixedly connected in the positioning groove. A second magnetic absorbing piece (24) that cooperates with the first magnetic absorbing piece (23) is fixedly connected to the back of the width positioning plate (19).

5. The adjustable welding fixture for the rotary tiller spindle according to claim 4, characterized in that: The spindle (10) positioning structure includes two supports (12) fixedly attached to the worktable (1) in parallel. One of the supports (12) is rotatably provided with a three-jaw chuck (11), and the other support (12) is provided with a center (14) that moves axially.

6. The adjustable welding fixture for the rotary tiller spindle according to claim 5, characterized in that: One of the brackets (12) has a drive motor (13) fixedly attached to its outer wall, and the output shaft of the drive motor (13) is fixedly attached to the back of the three-jaw chuck (11).

7. The adjustable welding fixture for the rotary tiller spindle according to claim 6, characterized in that: Another bracket (12) is horizontally threaded with a feed screw (15), one end of which is fixedly connected to a handle (16) and the other end is fixedly connected to a turntable, the rotating end of which is fixedly connected to the back of the tip (14).

8. The adjustable welding fixture for the rotary tiller spindle according to claim 7, characterized in that: The worktable (1) has a bottom rectangular sliding hole (2) along the sliding direction of the tool holder supply seat (6). A connecting plate (4) is slidably arranged in parallel in the bottom rectangular sliding hole (2). The lower surface of the worktable (1) is provided with a bottom drive screw that is threadedly connected to the connecting plate (4). The upper end of the connecting plate (4) is fixedly connected to a feed seat (25) located above the worktable (1). The tool holder supply seat (6) is connected to the feed seat (25) through a lifting structure.

9. The adjustable welding fixture for the rotary tiller spindle according to claim 8, characterized in that: The lifting structure includes vertical lead screws (32) fixedly connected in parallel to both ends of the feed seat (25), and drive plates (31) that are threadedly connected to the vertical lead screws (32) are fixedly connected to both ends of the tool holder supply seat.

10. The adjustable welding fixture for the rotary tiller spindle according to claim 9, characterized in that: The bottom of the storage tank (7) is provided with a top rectangular sliding hole (22). The push plate (8) is horizontally slidably installed in the top rectangular sliding hole (22). The bottom of the knife holder supply seat (6) is provided with a top drive screw that rotates horizontally. The lower end of the push plate (8) is threadedly connected to the top drive screw.

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