Clamping mechanism of plug seedling transplanter

Abstract

The utility model provides a plug seedling transplanter clamping mechanism which comprises a moving assembly arranged on a transplanter body and a clamping assembly connected with the moving assembly, the clamping assembly comprises two clamping arms used for clamping plug seedlings and a driving unit used for driving the two clamping arms to move oppositely, one end of each clamping arm is connected with the driving unit, and the other end of each clamping arm is connected with the moving assembly. An arc-shaped clamping piece in separable contact with a plug seedling is arranged at the other end of the clamping arm, and the arc-shaped clamping piece is arranged at one end of the clamping arm in a swinging manner. According to the clamping mechanism of the plug seedling transplanter provided by the utility model, the positive and negative lead screws drive the arc-shaped clamping pieces on the clamping arms to slowly approach plug seedlings, and the sponge bosses are arranged on the arc-shaped clamping pieces to buffer the clamping of the arc-shaped clamping pieces, so that the clamping of the plug seedlings by the arc-shaped clamping pieces is more stable and reliable; the tray seedlings are flexibly buffered by the sponge bosses, so that the tray seedlings are prevented from being collapsed and broken due to stress concentration during clamping, and the clamping effect of the clamping mechanism on the tray seedlings is better.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically to a clamping mechanism for a seedling transplanter. Background Technology

[0002] In modern agricultural planting, plug seedling transplanting technology refers to the process of transplanting seedlings cultivated using plug seedling raising technology into larger containers or soil. Plug seedling raising technology uses lightweight, soilless substrate materials such as peat moss and vermiculite, and employs mechanized precision sowing, with one seed per hole, resulting in seedlings in a single process. This seedling raising method allows seedlings to grow in independent spaces, resulting in intact root systems, high survival rates after transplanting, and rapid and uniform growth. The demand for automation in plug seedling transplanting operations is increasing, and the clamping mechanism, as the core actuator of the transplanting machine, directly determines the transplanting efficiency and seedling survival rate.

[0003] However, traditional clamping devices mostly use rigid jaws with linear drive structures. When the rigid jaws come into direct contact with the seedling stems, they are prone to causing epidermal damage. Especially when clamping fragile plug seedlings, excessive clamping force can cause the seedlings to break, while insufficient clamping force may cause slippage. Existing clamping mechanisms are prone to damaging plug seedlings and have poor reliability in clamping plug seedlings. This solution addresses this technical problem. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a clamping mechanism for a plug seedling transplanter. The high-speed rotation of a motor drives forward and reverse lead screws, which in turn move the clamping arms in opposite directions, causing the arc-shaped clamping plates to gradually approach the plug seedlings. Several sponge protrusions on the arc-shaped clamping plates provide cushioning during clamping. The self-locking action between the clamping arms and the forward and reverse lead screws ensures a more stable and reliable clamping of the plug seedlings. The flexible cushioning provided by the sponge protrusions prevents stress concentration and potential breakage of the plug seedlings during clamping, resulting in a superior clamping effect.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a clamping mechanism for a plug seedling transplanter, comprising a moving component disposed on the transplanter body and a clamping component connected to the moving component. The clamping component includes two clamping arms for clamping plug seedlings and a driving unit for driving the two clamping arms to move in opposite directions. One end of each clamping arm is connected to the driving unit, and the other end of each clamping arm is provided with an arc-shaped clamping piece that can be detachably contacted with the plug seedling. The arc-shaped clamping piece is oscillatingly disposed at one end of the clamping arm.

[0006] A hinge ring is provided on one side of the arc-shaped clamp, and a hinge seat is provided on the side of the clamp arm. The arc-shaped clamp is hinged to the hinge seat through the hinge ring.

[0007] Photoelectric sensors are mounted on the inner sides of the two clamping arms facing each other, and the photoelectric sensors are positioned towards the acupoint.

[0008] The other side of the arc-shaped clip is provided with a plurality of sponge protrusions, which are in contact with the seedlings in the plug tray.

[0009] The drive unit includes a connecting rod that slides through the two clamping arms, a support plate at one end of the two connecting rods, a motor on the support plate, and a positive and negative lead screw connected to the output end of the motor. The two clamping arms are respectively provided with internal threads that connect to the positive and negative lead screws, and the positive and negative lead screws pass through the clamping arms.

[0010] A fixing plate is provided at the other end of the two connecting rods, and a connecting plate is provided between the fixing plate and the support plate. The connecting plate is connected to the moving component.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] (1) The high-speed rotation of the motor drives the forward and reverse screws to move, and the forward and reverse screws drive the clamping arms to move in opposite directions, so that the arc-shaped clamping plate slowly approaches the seedling in the plug tray. The arc-shaped clamping plate is provided with several sponge protrusions to buffer the clamping of the arc-shaped clamping plate. Through the self-locking effect of the clamping arms and the forward and reverse screws, the clamping of the seedling in the plug tray by the arc-shaped clamping plate is more stable and reliable. The sponge protrusions provide flexible buffering for the clamping of the seedling in the plug tray, avoiding stress concentration and collapse of the seedling in the plug tray during clamping. The clamping mechanism has a good clamping effect on the seedling in the plug tray.

[0013] (2) When the motor starts, it rotates at high speed, which makes the initial movement of the clamping arms close faster. The position relationship between the clamping arms and the seedling tray is detected by the photoelectric sensor, and the speed of the motor is reduced, making the later movement of the clamping arms close slower. When the arc-shaped clamping piece approaches the seedling in the seedling tray, it moves even slower and the impact on the seedling in the seedling tray is smaller. The clamping mechanism has a higher clamping efficiency and a better clamping effect.

[0014] (3) By swinging the arc-shaped clamp on the hinge seat, when the seedlings in the plug tray are misaligned, the arc-shaped clamp can adjust the angle by swinging adaptively to clamp the misaligned seedlings, thus avoiding uneven force on the seedlings caused by misalignment. The clamping mechanism has a better clamping effect on the seedlings in the plug tray. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the clamping component of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the drive unit of this utility model;

[0018] Figure 4 This is a schematic diagram of the arc-shaped clip of this utility model.

[0019] In the figure: 1. Moving component; 2. Clamping component; 21. Clamping arm; 211. Hinge seat; 212. Photoelectric sensor; 22. Drive unit; 221. Connecting rod; 222. Support plate; 223. Motor; 224. Positive and negative lead screws; 225. Fixing plate; 226. Connecting plate; 23. Arc-shaped clamp; 231. Hinge ring; 232. Sponge boss; 3. Seedling tray; 4. Seedling tray. Detailed Implementation

[0020] To more clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0021] See Figures 1-4 A clamping mechanism for a plug seedling transplanter includes a moving component 1 mounted on the transplanter body and a clamping component 2 connected to the moving component 1. The clamping component 2 includes two clamping arms 21 for clamping plug seedlings 4 and a driving unit 22 for driving the two clamping arms 21 to move in opposite directions. One end of the clamping arm 21 is connected to the driving unit 22, and the other end of the clamping arm 21 is provided with an arc-shaped clamping piece 23 that can be detachably contacted with the plug seedling 4. The arc-shaped clamping piece 23 is oscillatingly mounted at one end of the clamping arm 21.

[0022] The moving component 1 includes two electric slides for driving the clamping component 2 to move the clamping component 2 to a position above the seedling tray 3 so that the clamping component 2 can clamp the seedling tray 4. Specifically, the two electric slides are vertically connected to each other, thereby realizing the lateral and longitudinal movement of the clamping component 2. The moving component 1 is implemented using existing technology and will not be described in detail here.

[0023] A hinge ring 231 is provided on one side of the arc-shaped clamp 23, and a hinge seat 211 is provided on the side of the clamp arm 21. The arc-shaped clamp 23 is hinged on the hinge seat 211 through the hinge ring 231.

[0024] Photoelectric sensors 212 are installed on the inner sides of the two clamping arms 21 facing each other. The photoelectric sensors 212 are positioned towards the acupoint plate 3. The photoelectric sensors 212 are connected to the motor 223 through the controller. When the photoelectric sensors 212 approach the acupoint plate 3, they transmit a signal to the controller, and the controller controls the motor 223 to reduce its speed.

[0025] On the other side of the arc-shaped clip 23, several sponge protrusions 232 are arranged in an array, and the sponge protrusions 232 are in contact with the seedling tray 4.

[0026] The drive unit 22 includes a connecting rod 221 that slides through the two clamping arms 21, a support plate 222 at one end of the two connecting rods 221, a motor 223 on the support plate 222, and a positive and negative lead screw 224 connected to the output end of the motor 223. The two clamping arms 21 are respectively provided with internal threads that connect to the positive and negative lead screw 224, and the positive and negative lead screw 224 passes through the clamping arms 21.

[0027] The other end of the two connecting rods 221 is provided with a fixing plate 225, and a connecting plate 226 is provided between the fixing plate 225 and the support plate 222. The connecting plate 226 is connected to the moving component 1.

[0028] The specific working process of this utility model:

[0029] In use, the moving component 1 is activated, and the clamping component 2 is moved to a position above the seedling tray 3. The seedling ejection mechanism (which is the structure of an existing seedling tray transplanter and is not shown in the attached diagram) ejects the seedling 4 from the seedling tray 3 to a position above the seedling tray 3 and separates it from the seedling tray 3. The motor 223 is activated, and the high-speed rotation of the motor 223 drives the positive and negative lead screws 224 to move in opposite directions. The positive and negative lead screws 224 drive the two clamping arms 21 to move in opposite directions, causing the two arc-shaped clamping pieces 23 on the clamping arms 21 to move closer to the seedling 4. When the clamping arms 21 are close together, the photoelectric sensor 212 approaches the seedling. When the tray 3 reaches the set distance, the photoelectric sensor 212 controls the motor 223 to reduce its speed through the controller, so that the clamping arm 21 slowly approaches the seedling 4 in the tray, thereby causing the arc-shaped clamping plate 23 to slowly clamp the seedling 4 in the tray. Finally, the sponge protrusion 232 of the arc-shaped clamping plate 23 makes flexible contact with the seedling 4 in the tray, clamping the seedling 4 in the tray. Then, the moving component 1 is started again, so that the clamping component 2 rises. After the clamping component 2 moves the seedling 4 in the tray to the corresponding position, the motor 223 is started in reverse, so that the arc-shaped clamping plate of the clamping arm 21 releases the seedling 4 in the tray, completing the clamping and releasing of the seedling 4 in the tray.

[0030] The high-speed rotation of motor 223 drives the forward and reverse lead screws to move, which in turn drive the clamping arms 21 to move in opposite directions, causing the arc-shaped clamping plate 23 to slowly approach the seedling tray 4. The arc-shaped clamping plate 23 is provided with several sponge protrusions 232 to buffer the clamping of the arc-shaped clamping plate 23. Through the self-locking effect of the clamping arms 21 and the forward and reverse lead screws, the clamping of the seedling tray 4 by the arc-shaped clamping plate 23 is more stable and reliable. The sponge protrusions 232 provide flexible buffering for the clamping of the seedling tray 4, avoiding stress concentration and collapse of the seedling tray 4 during clamping. The clamping mechanism has a good clamping effect on the seedling tray 4.

[0031] When the motor 223 starts, it rotates at high speed, which makes the initial stage of the clamping arm 21 closing movement faster. The photoelectric sensor 212 detects the positional relationship between the clamping arm 21 and the seedling tray 3, and reduces the speed of the motor 223, making the later stage of the clamping arm 21 closing movement slower. When the arc-shaped clamping piece 23 approaches the seedling tray 4, it moves even slower and the impact on the seedling tray 4 is smaller. The clamping mechanism has higher clamping efficiency and better clamping effect on the seedling tray 4.

[0032] When the seedling 4 ejected by the ejection mechanism is misaligned due to uneven force, the arc-shaped clamp 23 contacts the seedling 4, and the clamping arm 21 continues to move. The arc-shaped clamp 23 swings along the hinge seat 211 of the clamping arm 21 through the hinge ring 231 until the hinge seat 211 holds the arc-shaped clamp 23 against it. As the clamping arm 21 continues to move, the two arc-shaped clamps 23 firmly hold the seedling 4 through the sponge boss 232, thereby transferring the seedling 4.

[0033] By swinging the arc-shaped clamp on the hinge seat 211, when the seedling 4 is misaligned, the arc-shaped clamp can adaptively swing and adjust its angle to clamp the misaligned seedling 4, thus avoiding uneven force on the seedling 4 caused by misalignment. The clamping mechanism has a good clamping effect on the seedling 4.

[0034] In addition, this solution also solves the following technical problems: In existing technologies, fixed grippers are difficult to adapt to the size differences of different-sized seedling trays. When the row spacing of the seedling trays or the depth of the seedling cups changes, the opening and closing range and depth of the grippers need to be frequently adjusted, seriously affecting the continuity of operations. Furthermore, most gripping mechanisms lack precise positioning capabilities, relying on manual visual alignment, resulting in a high rate of transplanting position deviation and making it difficult to meet the agronomical requirements of high-density, precise transplanting.

[0035] The technical features of this utility model not described can be implemented by or by using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this utility model, and this utility model is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model should also be within the protection scope of this utility model.

Claims

1. A clamping mechanism for a seedling transplanter, characterized in that, The device includes a moving component (1) mounted on the main body of the transplanter and a clamping component (2) connected to the moving component (1). The clamping component (2) includes two clamping arms (21) for clamping seedlings (4) in plug trays and a driving unit (22) for driving the two clamping arms (21) to move in opposite directions. One end of the clamping arm (21) is connected to the driving unit (22), and the other end of the clamping arm (21) is provided with an arc-shaped clamping piece (23) that can be detachably contacted with the seedlings (4). The arc-shaped clamping piece (23) is oscillatingly mounted at one end of the clamping arm (21).

2. The clamping mechanism of the seedling transplanter according to claim 1, characterized in that, A hinge ring (231) is provided on one side of the arc-shaped clamp (23), and a hinge seat (211) is provided on the side of the clamp arm (21). The arc-shaped clamp (23) is hinged to the hinge seat (211) through the hinge ring (231).

3. The clamping mechanism of the seedling transplanter according to claim 2, characterized in that, Photoelectric sensors (212) are mounted on the inner sides of the two clamping arms (21) facing each other, and the photoelectric sensors (212) are positioned towards the acupoint plate (3).

4. The clamping mechanism of the seedling transplanter according to claim 3, characterized in that, On the other side of the arc-shaped clip (23), a plurality of sponge protrusions (232) are arranged in an array, and the sponge protrusions (232) are in contact with the seedlings in the seedling tray (4).

5. The clamping mechanism of the seedling transplanter according to claim 4, characterized in that, The drive unit (22) includes a connecting rod (221) that slides through the two clamping arms (21) on the side, a support plate (222) at one end of the two connecting rods (221), a motor (223) on the support plate (222), and a positive and negative lead screw (224) connected to the output end of the motor (223). The two clamping arms (21) are respectively provided with internal threads that connect to the positive and negative lead screw (224), and the positive and negative lead screw (224) passes through the clamping arms (21).

6. The clamping mechanism of the seedling transplanter according to claim 5, characterized in that, A fixing plate (225) is provided at the other end of the two connecting rods (221), and a connecting plate (226) is provided between the fixing plate (225) and the support plate (222), and the connecting plate (226) is connected to the moving component (1).

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