Automatic clamping machine for micro tiller chain wheel box

Abstract

The present application relates to the technical field of clamping, in particular to an automatic clamping machine for a chain wheel box of a mini-tiller. The present application provides an automatic clamping machine for a chain wheel box of a mini-tiller, which can clamp different models of chain wheel boxes. The automatic clamping machine for a chain wheel box of a mini-tiller comprises a machining table and a welding device, the welding device is installed on the rear side of the machining table; a clamping mechanism is arranged on the machining table; and a supporting mechanism is arranged on the machining table. The chain wheel box is placed on the top of the placing block, the placing block is adjusted according to the shape of the chain wheel box, so that the chain wheel box can be stably placed on the placing block and closely contact with chain wheel boxes of different shapes, thereby supporting chain wheel boxes of different models and shapes. The clamping effect of the clamping plate can improve the stability of the chain wheel box during machining, thereby improving the machining effect.

Description

Technical Field

[0001] This invention relates to the field of clamping technology, and in particular to an automatic clamping machine for the sprocket box of a micro-tiller. Background Technology

[0002] Clamping tools are devices used to secure workpieces during machining, ensuring they are held in a relatively correct position for easier processing. The sprocket box of a mini-tiller is a critical component; it requires clamping during machining to guarantee its stability.

[0003] Patent publication number CN105345520A discloses a clamping tool and its processing method for a sprocket box of a mini tiller. The clamping tool includes a base, a positioning strip on one side of the base with a U-shaped groove, and a pad on the other side of the base for positioning the sprocket box. It also includes two first clamping devices and several second clamping devices for clamping the sprocket box. This patent clamps the sprocket box by holding it between the positioning strip and the pad. However, the distance between the positioning strip and the pad is relatively fixed, and the size of the positioning strip cannot be adjusted. This limits the patent to clamping only one type of sprocket box, resulting in low practicality.

[0004] In summary, there is a need to develop an automatic clamping machine for micro-tiller sprocket boxes that can clamp different models of sprocket boxes. Summary of the Invention

[0005] In order to overcome the shortcomings of existing technologies, which can only clamp one type of sprocket box and have low practicality, this invention provides an automatic clamping machine for micro-tiller sprocket boxes that can clamp different types of sprocket boxes.

[0006] To achieve the above objectives, the present invention provides the following solution: an automatic clamping machine for a micro-tiller sprocket box, comprising: a processing table and a welding machine, the welding machine being installed on the rear side of the processing table; a clamping mechanism, the processing table being provided with a clamping mechanism for clamping the sprocket box, the clamping mechanism moving inward to clamp the sprocket box; and a supporting mechanism, the processing table being provided with a supporting mechanism for supporting the sprocket box, the supporting mechanism moving according to the shape of the sprocket box to support sprocket boxes of different shapes.

[0007] Preferably, the clamping mechanism includes: a support frame, with support frames connected to both the left and right sides of the processing table; a slider, with sliders slidably connected to the upper part of the support frame; an electric push rod, with an electric push rod slidably connected to the upper part of the support frame, and the electric push rod is connected to the slider; a clamping plate, with a clamping plate for clamping the sprocket box connected to the bottom of the telescopic rod of the electric push rod; and a first pressure spring, with a first pressure spring sleeved on the upper part of the support frame, and the two ends of the first pressure spring are respectively connected to the support frame and the slider.

[0008] Preferably, the supporting mechanism includes: a base plate, which is connected to the top of the processing table; an adjusting frame, which is slidably connected to the base plate; a third pressure spring, which is fitted on both the left and right sides of the rear of the adjusting frame, with its two ends connected to the adjusting frame and the base plate respectively; a placement block, which is slidably connected to the base plate at even intervals to support sprocket boxes of different shapes, the placement block passing through the adjusting frame, the lower rear side of the placement block being toothed, and the adjusting frame contacting the toothed part of the placement block; and a second pressure spring, which is fitted on each placement block, with its two ends connected to the upper part of the placement block and the top of the base plate respectively.

[0009] Preferably, the lower rear side of the placement block is toothed.

[0010] Preferably, the system also includes an adjustment mechanism for adjusting the position of the sprocket box. The adjustment mechanism includes: a guide plate, with guide plates connected to the top left and right sides of the base plate; a second adjustment plate, slidably connected between the guide plates; a fifth pressure spring, with a fifth pressure spring fitted inside each guide plate, the ends of the fifth pressure springs on the front and rear sides connected to the second adjustment plate and the guide plate respectively, and the ends of the fifth pressure spring in the middle connected to the adjacent second adjustment plate; a first adjustment plate, fitted between the second adjustment plates for adjusting the position of the sprocket box; and a fourth pressure spring, with three sets of fourth pressure springs fitted on each of the second adjustment plates, the ends of the fourth pressure springs on the left and right sides contacting the second adjustment plate and the first adjustment plate respectively, and the ends of the fourth pressure spring in the middle contacting the adjacent first adjustment plate.

[0011] Preferably, the system also includes a synchronization mechanism for driving the second adjusting plate to move synchronously in opposite directions. The synchronization mechanism includes: a fixed frame, with fixed frames connected to both the left and right sides of the processing table; support rods, with support rods fixedly connected to both the left and right sides of the front of the processing table; a rotating shaft, with a rotating shaft rotatably connected to the front of each fixed frame, and the front of each rotating shaft rotatably connected to the upper part of a nearby support rod; spur gears, with spur gears rotatably connected to the middle of each fixed frame; bevel gears, with bevel gears connected to the drive shaft and rear side of each spur gear, and nearby bevel gears meshing with each other; a rack, with racks connected to both the left and right sides of the second adjusting plate for driving the second adjusting plate to move synchronously in opposite directions, each rack slidably connected to a nearby fixed frame, and spur gears meshing with nearby racks; a motor, with a motor connected to the middle of the front of the processing table; and a flat belt, with a flat belt wound between the front of the motor's output shaft and the front of the rotating shaft via a pulley.

[0012] Preferably, the device also includes a stabilizing mechanism for clamping the sprocket box, the stabilizing mechanism comprising:

[0013] Support plate: A support plate is slidably connected to the front side of the processing table, and the lower left and right sides of the support plate are toothed; Mounting plate: A mounting plate is connected to the top rear side of the processing table; Threaded rod: Threaded rods are threadedly connected to the upper left and right sides of the support plate and the upper left and right sides of the mounting plate; Clamping plate: Clamping plates for clamping the sprocket box are rotatably connected between the inner sides of the adjacent threaded rods; Sixth pressure spring: A sixth pressure spring is fitted on the lower left and right sides of the support plate, and the two ends of the sixth pressure spring are connected to the support plate and the processing table respectively.

[0014] Preferably, the system also includes a guide mechanism for positioning the sprocket box, the guide mechanism comprising:

[0015] The slide rods are slidably connected to both the front and rear sides of the first adjusting plate; the positioning plates are connected between the tops of the slide rods on the same first adjusting plate for positioning the sprocket box; and the seventh pressure spring is fitted on each slide rod, with its two ends connected to the bottom of the positioning plate and the top of the first adjusting plate, respectively.

[0016] This invention has at least one of the following advantages: By placing the sprocket box on top of a placement block, the placement block adjusts according to the shape of the sprocket box, allowing the sprocket box to be placed stably on the placement block and to make close contact with sprocket boxes of different shapes. This provides support for sprocket boxes of different models and shapes, making it highly practical. The clamping action of the clamping plate improves the stability of the sprocket box during processing, thereby improving the processing effect. By moving the first adjusting plate, the position of the sprocket box can be adjusted, ensuring that the sprocket box is placed stably on the placement block and preventing tilting of the sprocket box due to improper placement when placed on top of the placement block. This process avoids affecting subsequent processing of the sprocket box. The rotation of the spur gear drives the rack and second adjusting plate to move automatically in opposite directions, eliminating the need for manual control of the second adjusting plate, reducing operational hassle, and preventing the second adjusting plate from affecting the downward movement of the sprocket box and causing it to tilt during placement. Rotating the threaded rod moves the clamping plate inward to hold the sprocket box, improving its stability during welding and ensuring processing quality. The positioning plate contacts the sprocket box first, pre-positioning it and facilitating the movement and adjustment by the first adjusting plate, preventing positional deviations that increase adjustment difficulty. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the processing table and welding device of the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the clamping mechanism of the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of the clamping mechanism of the present invention.

[0021] Figure 5 This is a three-dimensional structural diagram of the support mechanism of the present invention.

[0022] Figure 6 This is a three-dimensional structural diagram of the rearward explosion of the support mechanism of the present invention.

[0023] Figure 7 This is an enlarged three-dimensional structural diagram of point A in the present invention.

[0024] Figure 8 This is a three-dimensional structural diagram of the placement block and the second pressure spring of the present invention.

[0025] Figure 9 This is a three-dimensional structural diagram of the adjustment mechanism of the present invention.

[0026] Figure 10 This is a three-dimensional structural diagram of the synchronization mechanism of the present invention.

[0027] Figure 11 This is a cross-sectional three-dimensional structural diagram of the synchronization mechanism of the present invention.

[0028] Figure 12 This is an enlarged three-dimensional structural diagram of point B in the present invention.

[0029] Figure 13 This is a three-dimensional structural diagram of the stabilizing mechanism of the present invention.

[0030] Figure 14 This is a three-dimensional structural diagram of the stabilizing mechanism of the present invention.

[0031] Figure 15 This is a three-dimensional structural diagram of the guiding mechanism of the present invention.

[0032] Figure 16 This is a three-dimensional schematic diagram of the adjustment mechanism of the present invention.

[0033] Explanation of reference numerals in the attached drawings: 1_processing table, 11_welder, 2_clamping mechanism, 21_clamping plate, 22_slider, 23_support frame, 24_first pressure spring, 25_electric push rod, 3_supporting mechanism, 31_placement block, 32_second pressure spring, 33_base plate, 34_adjusting frame, 35_third pressure spring, 4_adjustment mechanism, 41_first adjusting plate, 42_second adjusting plate, 43_fourth pressure spring, 44_guide plate, 45_fifth pressure spring, 5_synchronization mechanism, 51_fixed frame, 52_rotating shaft, 53_bevel gear, 54_rack, 55_spur gear, 56_flat belt, 57_motor, 58_support rod, 6_stabilizing mechanism, 61_support plate, 62_clamping plate, 63_threaded rod, 64_sixth pressure spring, 65_mounting plate, 7_guide mechanism, 71_positioning plate, 72_slide rod, 73_seventh pressure spring. Detailed Implementation

[0034] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0035] Example 1

[0036] Please refer to the automatic clamping machine for the sprocket box of a mini tiller. Figures 1-8The system includes a processing table 1, a welding machine 11, a clamping mechanism 2, and a supporting mechanism 3. The welding machine 11 is mounted on the rear side of the processing table 1. The clamping mechanism 2 is mounted on the processing table 1 to clamp the sprocket box. The supporting mechanism 3 is mounted on the processing table 1 to support the sprocket box. The clamping mechanism 2 includes a clamping plate 21, a slider 22, a support frame 23, a first pressure spring 24, and an electric push rod 25. Support frames 23 are fixedly connected to both sides of the processing table 1. Sliding sliders 22 are slidably connected to the upper parts of both support frames 23. Electric push rods 25 are slidably connected to the upper parts of both support frames 23, and are fixedly connected to the sliders 22. Clamping plates 21 are fixedly connected to the bottom of the telescopic rods of both electric push rods 25, which are used to clamp the sprocket box. First pressure springs 24 are fitted on both sides of the upper part of both support frames 23. The two ends of the spring 24 are connected to the support frame 23 and the slider 22 respectively. The supporting mechanism 3 includes a placement block 31, a second pressure spring 32, a base plate 33, an adjusting frame 34 and a third pressure spring 35. The base plate 33 is fixedly connected to the top of the processing table 1. The adjusting frame 34 is slidably connected to the base plate 33. The third pressure spring 35 is sleeved on both the left and right sides of the rear part of the adjusting frame 34. The two ends of the third pressure spring 35 are connected to the adjusting frame 34 and the base plate 33 respectively. The placement blocks 31 are slidably connected to the base plate 33 at even intervals. The placement blocks 31 are used to support sprocket boxes of different shapes. The placement blocks 31 pass through the adjusting frame 34. The lower rear side of the placement block 31 is toothed. The adjusting frame 34 contacts the toothed part of the placement block 31. The second pressure spring 32 is sleeved on each placement block 31. The two ends of the second pressure spring 32 are connected to the upper part of the placement block 31 and the top of the base plate 33 respectively.

[0037] In use, the operator uses a crane to lift the sprocket box onto the placement block 31 using a suction method. Because the sprocket box is irregularly shaped, the placement block 31 in contact with it is compressed downwards, thus compressing the second pressure spring 32. Since the lower part of the placement block 31 is toothed, its downward movement compresses the adjusting frame 34, causing it to move backwards and compressing the third pressure spring 35. When the placement block 31 moves downwards and separates from the adjusting frame 34, the third pressure spring 35 returns to its original position, causing the adjusting frame 34 to move forward and reset to its original position. The block 31 contacts the sprocket, thus locking the block 31 in place. This prevents the block 31 from pushing against the sprocket box under the action of the second pressure spring 32, affecting the stability of the sprocket box. This process is repeated until the sprocket box stops moving completely and the block 31 stops moving. In this way, the block 31 can provide close contact support for sprocket boxes of different shapes, keeping the sprocket box balanced and preventing displacement and tilting during welding. The support effect is also good. Then, the worker manually moves the slider 22 towards... When the outer lever is moved, the first pressure spring 24 is compressed, causing the electric push rod 25 and the clamping plate 21 to move outward. Then, the electric push rod 25 is activated, extending its telescopic rod and moving the clamping plate 21 downward closer to the sprocket box. The electric push rod 25 is then stopped, and the slider 22 is released. The first pressure spring 24 returns to its original position, causing the slider 22 to move inward to reset. This, in turn, moves the electric push rod 25 and the clamping plate 21 inward to clamp the sprocket box, thus positioning it and improving stability during welding. Then, the lever is activated again. The welding machine 11 welds the sprocket box. After welding, the welding machine 11 is turned off. Then, the telescopic rod of the electric push rod 25 is controlled to retract and reset, which drives the clamping plate 21 to move upward and reset. Then, the sprocket box is unloaded with the help of a crane. Then, the adjusting frame 34 is manually pushed to move backward and no longer jams the placement block 31. The third pressure spring 35 is compressed and the second pressure spring 32 is reset, which drives the corresponding placement block 31 to move upward and reset for the next use. Then, the adjusting frame 34 is released, the third pressure spring 35 is reset, and the adjusting frame 34 is moved forward and reset.

[0038] Example 2

[0039] Based on Example 1, please refer to Figure 1 , Figure 9 and Figure 16It also includes an adjustment mechanism 4, which is used to adjust the position of the sprocket box. The adjustment mechanism 4 includes a first adjustment plate 41, a second adjustment plate 42, a fourth pressure spring 43, a guide plate 44, and a fifth pressure spring 45. Guide plates 44 are fixed to the top left and right sides of the base plate 33. Two second adjustment plates 42 are slidably connected between the two guide plates 44. Three fifth pressure springs 45 are sleeved inside each of the two guide plates 44. The two ends of the fifth pressure springs 45 on the front and rear sides are respectively connected to the second adjustment plates 42 and the guide plates 44. The two ends of the fifth pressure spring 45 in the middle are connected to the adjacent second adjustment plate 42 respectively. Two first adjustment plates 41 are fitted between the two second adjustment plates 42. The first adjustment plates 41 are used to adjust the position of the sprocket box. Three sets of fourth pressure springs 43 are fitted on each of the two second adjustment plates 42. Each set consists of two fourth pressure springs 43. The two ends of the fourth pressure springs 43 on the left and right sides are in contact with the second adjustment plate 42 and the first adjustment plate 41 respectively. The two ends of the fourth pressure spring 43 in the middle are in contact with the adjacent first adjustment plate 41 respectively. Workers use a crane to lift the sprocket box onto the top of the first adjusting plate 41. Then, workers control the movement of the first adjusting plate 41, causing the fourth pressure spring 43 to deform adaptively, moving the sprocket box. With the crane's assistance, the sprocket box is prevented from directly pressing against the first adjusting plate 41, making it easier for workers to adjust its position. This allows the sprocket box to be placed stably on the placement block 31, preventing it from tilting due to improper placement and affecting subsequent processing. After the sprocket box is positioned, workers pull the second adjusting plate 42 outwards, compressing the outer fifth pressure spring 45. The fifth pressure spring 45 in the middle is stretched, and then the first adjusting plate 41 is pulled outward. The fourth pressure spring 43 on the outside is compressed, and the fourth pressure spring 43 in the middle is stretched, causing the first adjusting plate 41 to separate from the sprocket box. Then, the crane is controlled to release the sprocket box, causing the sprocket box to fall to the top of the placement block 31. Then, the first adjusting plate 41 and the second adjusting plate 42 are released. Under the reset action of the fourth pressure spring 43 and the fifth pressure spring 45, the first adjusting plate 41 and the second adjusting plate 42 are driven to move inward to clamp the sprocket box. In this way, the sprocket box can be clamped, thereby improving the stability of the sprocket box. When the sprocket box needs to be removed, the first adjusting plate 41 and the second adjusting plate 42 can be pulled outward.

[0040] Please see Figure 1 , Figure 10 , Figure 11 and Figure 12It also includes a synchronization mechanism 5, which drives the second adjusting plate 42 to move synchronously towards and away from each other. The synchronization mechanism 5 includes a fixed frame 51, a rotating shaft 52, a bevel gear 53, a rack 54, a spur gear 55, a flat belt 56, a motor 57, and a support rod 58. Fixed frames 51 are fixedly connected to both the left and right sides of the processing table 1, and support rods 58 are fixedly connected to both the left and right sides of the front part of the processing table 1. The front sides of the two fixed frames 51 are rotatably connected to the rotating shaft 52. The front sides of the two rotating shafts 52 are rotatably connected to the upper part of the adjacent support rod 58. The middle of the two fixed frames 51 is rotatably connected to... Each spur gear 55 has a drive shaft and a rotating shaft 52 with a bevel gear 53 connected by a key. Two adjacent bevel gears 53 mesh with each other. Two second adjusting plates 42 are fixedly connected to racks 54 on their left and right sides. The racks 54 are used to drive the second adjusting plates 42 to move synchronously towards and away from each other. Each rack 54 is slidably connected to an adjacent fixed frame 51. Both spur gears 55 mesh with adjacent racks 54. A motor 57 is fixedly connected to the center of the front side of the processing table 1 by bolts. A flat belt 56 is wound around the front side of the output shaft of the motor 57 and the front side of the two rotating shafts 52 through a pulley. When the motor 57 is started, the output shaft of the motor 57 drives the flat belt 56 to rotate in both directions, which in turn drives the rotating shaft 52 to rotate in both directions. The rotating shaft 52 drives the bevel gear 53 to rotate in both directions, which in turn drives the spur gear 55 to rotate in both directions. This causes the rack 54 to drive the two second adjusting plates 42 to move automatically towards and away from each other, preventing the second adjusting plates 42 from affecting the downward movement of the sprocket box and causing the sprocket box to tilt when placed. This eliminates the need for manual control of the movement of the second adjusting plates 42, reducing operational hassle.

[0041] Please see Figure 1 , Figure 13 and Figure 14It also includes a stabilizing mechanism 6, which is used to clamp the sprocket box. The stabilizing mechanism 6 includes a support plate 61, a clamping plate 62, a threaded rod 63, a sixth pressure spring 64, and a mounting plate 65. The support plate 61 is slidably connected to the front side of the processing table 1. The lower left and right sides of the support plate 61 are toothed. The mounting plate 65 is fixedly connected to the rear side of the top of the processing table 1. The upper left and right sides of the support plate 61 and the upper left and right sides of the mounting plate 65 are threadedly connected to the threaded rod 63. The clamping plate 62 is rotatably connected between the inner sides of two adjacent threaded rods 63. The clamping plate 62 is used to clamp the sprocket box. The lower left and right sides of the support plate 61 are fitted with the sixth pressure spring 64. The two ends of the sixth pressure spring 64 are respectively connected to the support plate 61 and the processing table 1. Initially, the front of the adjusting frame 34 engages with the support plate 61, and the sixth pressure spring 64 is compressed. When the sprocket box is placed on top of the placement block 31, the placement block 31 moves downward, causing the adjusting frame 34 to move backward and separate from the support plate 61. The sixth pressure spring 64 resets, causing the support plate 61 to move upward, which in turn causes the front clamping plate 62 and threaded rod 63 to move upward. When the adjusting frame 34 moves forward and resets, the front of the adjusting frame 34 engages with the support plate 61. This limits the position of the support plate 61, improves its stability, and facilitates the clamping plate 62 in holding the sprocket box. Then... The threaded rod 63 moves the clamping plate 62 inward to hold the sprocket box, thus improving the stability of the sprocket box during welding and ensuring processing quality. During reset, the operator manually reverses the threaded rod 63, moving the clamping block outward to release the sprocket box. Then, the adjusting frame 34 moves backward, and the operator manually presses the support plate 61 downward to reset it. The sixth pressure spring 64 is compressed, causing the front clamping plate 62 and threaded rod 63 to move downward to reset. Then, the adjusting frame 34 moves forward to reset and position the support plate 61. Finally, the sprocket box can be removed.

[0042] Please see Figure 1 and Figure 15It also includes a guide mechanism 7, which is used to position the sprocket box. The guide mechanism 7 includes a positioning plate 71, a slide rod 72 and a seventh pressure spring 73. The slide rod 72 is slidably connected to the front and rear sides of the two first adjustment plates 41. The positioning plate 71 is fixed between the tops of the two slide rods 72 on the same first adjustment plate 41. The positioning plate 71 is used to position the sprocket box. A seventh pressure spring 73 is sleeved on each slide rod 72. The two ends of the seventh pressure spring 73 are respectively connected to the bottom of the positioning plate 71 and the top of the first adjustment plate 41. When the crane lifts the sprocket box above the first adjusting plate 41, the positioning plate 71 can first contact the sprocket box. As the sprocket box moves downward, the positioning plate 71 and the slide rod 72 move downward accordingly, and the seventh pressure spring 73 is compressed. The positioning plate 71 can position the sprocket box in advance, avoiding the sprocket box from swaying due to the excessive length of the crane rope. This makes it easier for the first adjusting plate 41 to move and adjust the sprocket box. In this way, the position can be confirmed in advance, preventing position deviation from increasing the difficulty of adjustment. When the sprocket box is removed, the seventh pressure spring 73 resets, driving the positioning plate 71 and the slide rod 72 to move upward and reset.

[0043] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present application. Therefore, the content of this specification should not be construed as a limitation of the present application.

Claims

1. An automatic clamping machine for a micro-tiller sprocket box, characterized in that, It includes: a processing table (1) and a welding machine (11), with the welding machine (11) installed on the rear side of the processing table (1); a clamping mechanism (2), which is provided on the processing table (1) for clamping the sprocket box, and the clamping mechanism (2) moves inward to clamp the sprocket box; and a supporting mechanism (3), which is provided on the processing table (1) for supporting the sprocket box, and the supporting mechanism (3) moves according to the shape of the sprocket box to support sprocket boxes of different shapes. The clamping mechanism (2) includes: a support frame (23), which is connected to both the left and right sides of the processing table (1); a slider (22), which is slidably connected to the upper part of the support frame (23); an electric push rod (25), which is slidably connected to the upper part of the support frame (23) and is connected to the slider (22); a clamping plate (21), which is connected to the bottom of the telescopic rod of the electric push rod (25) for clamping the sprocket box; and a first pressure spring (24), which is sleeved on the upper part of the support frame (23) and is connected to the support frame (23) and the slider (22) at both ends respectively. The supporting mechanism (3) includes: a base plate (33), which is connected to the top of the processing table (1); an adjusting frame (34), which is slidably connected to the base plate (33); a third pressure spring (35), which is fitted on both the left and right sides of the rear part of the adjusting frame (34), and the two ends of the third pressure spring (35) are respectively connected to the adjusting frame (34) and the base plate (33); a placement block (31), which is slidably connected to the base plate (33) at even intervals for supporting sprocket boxes of different shapes, the placement block (31) passes through the adjusting frame (34), the lower rear side of the placement block (31) is toothed, and the adjusting frame (34) contacts the toothed part of the placement block (31); and a second pressure spring (32), which is fitted on each placement block (31), and the two ends of the second pressure spring (32) are respectively connected to the upper part of the placement block (31) and the top of the base plate (33).

2. The automatic clamping machine for a micro-tiller sprocket box according to claim 1, characterized in that, The lower rear side of the placement block (31) is toothed.

3. An automatic clamping machine for a micro-tiller sprocket box according to claim 2, characterized in that, It also includes an adjustment mechanism (4) for adjusting the position of the sprocket box. The adjustment mechanism (4) includes: a guide plate (44), with guide plates (44) connected to the top left and right sides of the base plate (33); a second adjustment plate (42), with the guide plates (44) slidably connected to each other; and a fifth pressure spring (45), with a fifth pressure spring (45) fitted inside each guide plate (44). The two ends of the fifth pressure springs (45) on the front and rear sides are connected to the second adjustment plate (42) and the guide plate (44) respectively, and the fifth pressure spring in the middle is... The two ends of the spring (45) are respectively connected to the adjacent second adjustment plate (42); between the first adjustment plate (41) and the second adjustment plate (42), there is a first adjustment plate (41) for adjusting the position of the sprocket box; the fourth pressure spring (43) is fitted on the second adjustment plate (42) with three sets of fourth pressure springs (43), the two ends of the fourth pressure springs (43) on the left and right sides are respectively in contact with the second adjustment plate (42) and the first adjustment plate (41), and the two ends of the fourth pressure spring (43) in the middle are respectively in contact with the adjacent first adjustment plate (41).

4. An automatic clamping machine for a micro-tiller sprocket box according to claim 3, characterized in that, It also includes a synchronization mechanism (5) for driving the second adjustment plate (42) to move synchronously towards and away from each other. The synchronization mechanism (5) includes: a fixed frame (51), which is connected to both the left and right sides of the processing table (1); a support rod (58), which is connected to both the left and right sides of the front of the processing table (1); a rotating shaft (52), which is rotatably connected to the front side of the fixed frame (51), and the front side of the rotating shaft (52) is rotatably connected to the upper part of the adjacent support rod (58); a spur gear (55), which is rotatably connected to the middle of the fixed frame (51); and a bevel gear (53), which is connected to each spur gear (55). 5) The drive shaft and the rear side of the rotating shaft (52) are both connected to bevel gears (53), and the bevel gears (53) mesh with each other; rack (54), the left and right sides of the second adjusting plate (42) are both connected to racks (54) for driving the second adjusting plate (42) to move synchronously in opposite directions, each rack (54) is slidably connected to the nearby fixed frame (51), and the spur gears (55) mesh with the nearby racks (54); motor (57), the middle of the front side of the processing table (1) is connected to the motor (57); flat belt (56), the front side of the output shaft of the motor (57) and the front side of the rotating shaft (52) are connected by a pulley and a flat belt (56).

5. An automatic clamping machine for a micro-tiller sprocket box according to claim 1, characterized in that, It also includes a stabilizing mechanism (6) for clamping the sprocket box. The stabilizing mechanism (6) includes: a support plate (61), which is slidably connected to the front side of the processing table (1). The lower left and right sides of the support plate (61) are toothed; a mounting plate (65), which is connected to the rear side of the top of the processing table (1); a threaded rod (63), which is threadedly connected to the upper left and right sides of the support plate (61) and the upper left and right sides of the mounting plate (65); a clamping plate (62), which is rotatably connected to the inner sides of the adjacent threaded rods (63) for clamping the sprocket box; and a sixth pressure spring (64), which is sleeved on the lower left and right sides of the support plate (61). The two ends of the sixth pressure spring (64) are respectively connected to the support plate (61) and the processing table (1).

6. An automatic clamping machine for a micro-tiller sprocket box according to claim 3, characterized in that, It also includes a guide mechanism (7) for positioning the sprocket box. The guide mechanism (7) includes: a slide rod (72), which is slidably connected to both the front and rear sides of the first adjustment plate (41); a positioning plate (71), which is connected between the tops of the slide rods (72) on the same first adjustment plate (41) for positioning the sprocket box; and a seventh pressure spring (73), which is fitted on each slide rod (72). The two ends of the seventh pressure spring (73) are respectively connected to the bottom of the positioning plate (71) and the top of the first adjustment plate (41).

Images