Seedling raising pad taking-out device

Abstract

A seedling raising pad taking-out device can simply take out a seedling raising pad from a seedling box, and automation is easy to achieve. The seedling raising pad taking-out device is characterized in that a plurality of needles are arranged below a net with the same size as the seedling raising pad, the net can be lifted up and down, when the net is descended, the needles penetrate into seedbed soil of the seedling raising pad, and the seedling raising pad is lifted from the seedling box, so that the seedling raising pad is taken out from the seedling box.

Description

Technical Field

[0001] This utility model relates to a seedling pad removal device that can remove the seedling pad from a seedling box containing the seedling pad, and is used in rice transplanters and the like. Background Technology

[0002] In the past, when removing the seedling mat from the seedling box, the operator would grasp the leaves on the end side of the seedling mat and slightly lift it, then insert a seedling retrieval board from there to scoop it up.

[0003] However, removing the seedling mats by such operators is quite troublesome. Furthermore, this has become an obstacle to the automation of rice transplanters in recent years. Utility Model Content

[0004] In this invention, the problem of removing seedling mats in the past is considered, and the purpose is to provide a seedling mat removal system that can achieve mechanized removal without relying on the operator's hands.

[0005] The first aspect of this utility model is a seedling mat removal device, characterized in that a plurality of needles are provided below a net of the same size as the seedling mat, which can raise and lower the net in the vertical direction. When the net is lowered, the needles pierce the seedbed soil of the seedling mat, lift the seedling mat that has been pierced from the seedling box, and thereby remove the seedling mat from the seedling box.

[0006] The second aspect of this utility model, according to the seedling pad removal device described in the first aspect of the utility model, is characterized in that the needle is formed by combining two thin plates in a cross shape with the needle tip tapering, and the needle has a barb portion.

[0007] The third aspect of this utility model, according to the seedling pad removal device described in the first or second aspect, is characterized in that the seedling pad removal device is provided with a seedling pulling part, which pulls the seedling pad, which is pierced and lifted by the needle, out of the needle. While the seedling pulling part is pressing against the upper surface of the seedbed soil, the end of the needle moves up and down from a position below the seedling pulling part to a position above the seedling pulling part, thereby pulling the seedling pad out of the needle.

[0008] According to a first aspect of this invention, the seedling mat can be removed from the seedling box, enabling automation.

[0009] According to a second aspect of this invention, the seedling pad can be reliably removed from the seedling box. Furthermore, by using needles made of thin plates, the cross-sectional area can be minimized, preventing holes from being made in the seedbed soil. Additionally, by providing multiple barbs, the seedlings can be hooked onto the taut roots in the seedbed soil when being lifted from the seedling box, thereby assisting in lifting the seedlings.

[0010] According to a third aspect of this utility model, the seedling pad can be removed without damaging the seedling bed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a side view of the seedling pad removal device according to an embodiment of the present invention.

[0012] Figure 2 This is a top view of the seedling pad removal device.

[0013] Figure 3 This is a partial three-dimensional view of the seedling mat removal device.

[0014] Figure 4 This is a three-dimensional view of the insertion part of the seedling mat removal device.

[0015] Figure 5 This is a side view of the seedling pad removal device's insertion section, the seedling pad, and the seedling box.

[0016] Figure 6 This is a side view of the seedling pad removal device's insertion section, the seedling pad, and the seedling box.

[0017] Figure 7 This is a side view of the seedling pad removal device's insertion section, the seedling pad, and the seedling box.

[0018] Figure 8 This is a side view of the seedling pad removal device's insertion section, the seedling pad, and the seedling box.

[0019] Figures 9(A), 9(B), and 9(C) are a perspective view, a sectional view, and a front view of the insertion part of the seedling pad removal device, respectively.

[0020] Figure 10 This is a partially enlarged side view of the insertion part of the seedling pad removal device and the seedling pad and seedling box.

[0021] Figure 11(A) is a top view of the seedling box and seedling mat, and Figure 11(B) is a partial enlarged view.

[0022] Figure 12 This is a schematic top view of the seedling removal unit of the seedling pad removal device.

[0023] Figure 13 This is a three-dimensional view of the pull-out section of the seedling pad removal device.

[0024] Figure 14 This is a schematic side view of the seedling removal unit of the seedling pad removal device.

[0025] Figure 15 This is a schematic side view of the seedling removal unit of the seedling pad removal device.

[0026] Figure 16 This is a side view of the insertion part, the seedling pad, and the extraction part of the seedling pad removal device.

[0027] Figure 17 This is a side view of the insertion part, the seedling pad, and the extraction part of the seedling pad removal device.

[0028] Figure 18 This is a schematic side view of the seedling removal unit of the seedling pad removal device.

[0029] Figure 19 This is a schematic side view of the seedling removal unit of the seedling pad removal device.

[0030] Figure 20 This is a three-dimensional view of the seedling removal unit and seedling box of the seedling mat removal device.

[0031] Figure 21 This is a schematic three-dimensional view of the seedling removal unit and seedling container of the seedling pad removal device.

[0032] Figure 22 This is a 3D view of the empty box storage compartment of the seedling mat removal device.

[0033] Figure 23 This is a three-dimensional view of the multi-row frame units of the auxiliary seedling rack unit of the seedling pad removal device.

[0034] Figure 24 This is a partial schematic side view of the seedling removal unit and the auxiliary seedling rack unit of the seedling mat removal device.

[0035] Figure 25 This is a partial schematic side view of the seedling removal unit and the auxiliary seedling rack unit of the seedling mat removal device. Detailed Implementation

[0036] Figure 1 This is a side view of a rice transplanter equipped with the seedling pad removal device according to an embodiment of the present invention. Figure 2 This is its top view. Below, based on the direction of travel of the rice transplanter, we define it as forward / backward, left / right, and up / down.

[0037] exist Figure 1 , Figure 2 The vehicle body 100 is capable of movement via front wheels 1 and rear wheels 2. The vehicle body 100 includes an engine 3, a fertilizer applicator 4, a planting device 5, and a float. Furthermore, a seedling-collecting unit 7 (described later) is mounted on top of the vehicle body 100, allowing it to move left and right. Additionally, an auxiliary seedling rack unit 8 (described later) is located at the front of the vehicle body 100. Here, reference numeral 9 indicates two tracks on which the seedling-collecting unit 7 can move left and right. Figure 3 This is a three-dimensional view of the seedling collection unit 7 and the auxiliary seedling rack unit 8.

[0038] Figure 4 This is a perspective view of the infeed section 70 and the seedling box 10. The infeed section 70 has a flat, grid-shaped mesh section 71 and multiple insertion sections 72. The insertion sections 72 are formed with a needle structure as described later. The insertion sections 72 are installed side by side at the intersections of the grids on the lower surface of the mesh section 71. Reference numeral 73 is a longitudinal arm that holds the mesh section 71 and the insertion sections 72.

[0039] And, as Figure 4 As shown, a seedling box 10 for storing the seedling pad 11 is disposed below the receiving part 70. Furthermore, the receiving part 70 removes the seedling pad 11 from the seedling box 10 in the following manner.

[0040] First, if Figure 5 As shown, near the upper end of the leaves 11a of the seedlings on the seedling mat 11, the net section 71 is slowly lowered while swaying from side to side to part the leaves. The range of swaying is set to less than half the interval of the needles (insertion section 72), or it can be a slight vibration.

[0041] Therefore, the leaf 11a can be made to enter the mesh of the net section 71 that is directly above the rice grain as much as possible, or enter the mesh of the net section 71 that is as close as possible to the direct top of the rice grain, thereby reducing the possibility of the leaf 11a breaking or being damaged by the descending net section 71.

[0042] like Figure 6 , Figure 7 As shown, by setting the length of the piercing part 72 to be 2 to 3 times the thickness of the seedbed soil 11b, even if the net part 71 is lowered and the end of the piercing part 72 reaches the bottom of the seed box 10, the net part 71 will not reach the upper surface of the seedbed soil 11b, thus forming a gap between the net part 71 and the upper surface of the seedbed soil 11b.

[0043] Therefore, the net section 71 will not flatten the leaves 11a in the mesh of the net section 71 that are not directly above the rice grains, and can create space to move to the left and right, so that the operation can be carried out without damaging the leaves 11a of the seedling mat 11.

[0044] Figure 8 This indicates that after the multiple insertion parts 72 are inserted into the seedbed soil 11b of the seedling mat 11, the net part 71 and the insertion parts 72 are raised using the arm 73. Because the seedling box 10 is relatively heavy, it will not be lifted up together and remain in place. Alternatively, a locking mechanism can be applied by pressing down on the seedling box 10 at this time.

[0045] Next, a specific example of the insertion part 72 will be described. Figure 9(A) is a perspective view, Figure 9(B) is a sectional view, and Figure 9(C) is a front view. The insertion part 72 is formed by combining two thin, long plates in a cross-shaped cross section, and multiple barbed parts 72a are formed in the part that penetrates into the seedbed soil 11b. The end (lower end) of the insertion part 72 tapers to facilitate penetration into the seedbed soil 11b. However, the very end of the insertion part 72 and the barbed parts 72a are rounded with a radius R.

[0046] Figure 10 This is a magnified view of the piercing part 72 penetrating into the seedbed soil 11b, and the root is labeled 11c.

[0047] In this way, because the insertion part 72 is made of a thin plate, the cross-sectional area can be minimized, allowing for insertion without damage to the seedbed soil 11b without creating holes. Furthermore, by providing multiple barbed parts 72a, when the seedling pad 11 is removed from the seed box 10 and lifted, they hook onto the roots 11c taut in the seedbed soil 11b, making it easier to lift the seedling pad 11. Additionally, because each part has rounded corners, when the insertion part 72 is inserted into the seedbed soil 11b, the roots 11c are pushed aside and inserted without being cut, hooking onto the barbed parts 72a, thus making it difficult for the seedling pad 11 to fall off.

[0048] Figures 11(A) and 11(B) are diagrams illustrating the arrangement and length of the mesh of the mesh section 71 and the plurality of inserts 72.

[0049] Here, the front-to-back spacing L1 of the plurality of piercing portions 72 is consistent with the length of one seedling feeding of the seedling pad 11, and the left-to-right spacing L2 of the plurality of piercing portions 72 is consistent with the length of one lateral feeding of the seedling pad 11. In this embodiment, since the plurality of piercing portions 72 hang down at the intersections of the grids of the mesh portion 71, the spacing of the mesh of the mesh portion 71 is the same as the spacing of the plurality of piercing portions 72.

[0050] That is, the spacing of the mesh of the mesh section 71 and the spacing of the piercing sections 72 are set accordingly to the seedling quantity and the number of transverse feeds. The longitudinal spacing of the piercing sections 72 on the seedling mat 11 is set to divide the length of the seedling mat 11 equally, corresponding to the seedling quantity (e.g., seedling quantity 12mm × 48 pieces = length 576mm). The transverse spacing of the piercing sections 72 is set to divide the width of the seedling mat 11 equally, corresponding to the number of transverse feeds (e.g., transverse feeds 24 times × 11.5mm = width 276mm). In addition, the piercing sections 72 with a cross-shaped cross section are installed in a manner parallel to the longitudinal and transverse directions of the seedling box 10 using thin plates. Furthermore, the cross-shaped cross section of the piercing sections 72 located at the ends and corners of the seedling box 10 is formed into a T-shape or an L-shape.

[0051] Therefore, when the seedling mat 11 taken from the seedling box 10 is placed in the planting device 5 after the insertion part 72 is removed as described later, the mark left by the removed insertion part 72 will be positioned at the same size as the seedlings picked up by the planting claw of the planting device 5 during planting. This allows for the picking of reliable seedlings, reduces missing seedlings, and improves planting performance. In addition, the picking load of the planting claw is reduced and its durability is increased after the insertion of the insertion part 72. However, if the seedling picking amount or the number of lateral feeds is changed, the mesh part 71 and the insertion part 72 need to be replaced accordingly.

[0052] Figure 12 This is a top view of the seedling collection unit 7. The aforementioned collection section 70 (removal position), which has a mesh section 71 and an insertion section 72, is located on the front left side. Immediately behind it is a guide device 12 for a belt conveyor. The extraction section 13 is in standby position (standby position) to the right of the guide device 12. A connecting plate 14 is located behind the guide device 12. Reference numeral 15 indicates the housing that houses the collection section 70, the extraction section 13, and the guide device 12. The connecting plate 14 is mounted on the rear surface 15e of the housing 15. Thus, the seedling collection unit 7 is constituted by at least the collection section 70, the extraction section 13, the guide device 12, the connecting plate 14, and the housing 15.

[0053] Figure 13 This is a perspective view of the pull-out section 13 positioned in the standby position. As shown, the pull-out section 13 includes: comb teeth 13a, which are rods arranged side by side, each longer than the shorter side of the seedling pad 11; and a fixing frame 13b to which the comb teeth 13a are fixed. The comb teeth 13a are kept horizontal. The spacing and number of the comb teeth 13a correspond to the spacing and number of the plurality of insertion parts 72.

[0054] Figure 14 This is a side view of the seedling taking unit 7, showing the initial scene where the aforementioned taking-in part 70 is about to lift the seedling pad 11 stored in the seedling box 10 from the taking-out position. A pulling-out part 13 and a guiding device 12 are arranged at the rear.

[0055] Figure 15 The image shows the state after the seedling pad 11 has been lifted from the seedling box 10 by the take-up portion 70 as described above. Then, the take-up portion 70 moves above the rear guide device 12 while the seedling pad 11 is suspended (illustration omitted).

[0056] Thus, if the insertion part 70 reaches above the guide device 12 while the seedling pad 11 is suspended, the extraction part 13 moves horizontally to the left from the standby position (see reference). Figure 12 ).

[0057] Figure 16The diagram shows the state in which the comb teeth 13a of the horizontally moving pull-out part 13 are moved and positioned on the upper surface of the seedbed soil 11b of the seedling pad 11 into which the insertion part 72 is inserted. The spacing and number of the comb teeth 13a correspond to the spacing and number of the plurality of insertion parts 72, so that they can be inserted and moved between them.

[0058] Figure 17 The illustration shows a situation where the upper surface of the seedbed soil 11b of the seedling mat 11 is pressed down by the comb teeth 13a, and the insertion part 72 moves upward relative to the comb teeth 13a, thereby pulling the seedling mat 11 out from the insertion part 72. As a result, the seedling mat 11 falls due to its own weight. In this example, the comb teeth 13a, i.e., the pulling part 13, does not move up or down, only the insertion part 72 rises. However, it is also possible that, conversely, the comb teeth 13a move downward, and the insertion part 72 does not move.

[0059] In this way, pressing the seedbed soil 11b with a long, rod-shaped comb provides a more stable way to remove the soil 11b compared to pressing it at a point or with a small surface. This allows the soil 11b to be removed without distortion. Furthermore, by forming the comb teeth 13a into round rods, even when the leaves 11a of the seedling mat 11 are pressed flat, the leaves 11a tend to dodge to the left or right of the round rod, preventing breakage or damage. Furthermore, when removing the seedling pad 11 from the insertion part 72, the seedling pad 11 is removed by forcibly cutting the root 11c while the root 11c of the seedling is hooked onto the barb part 72a provided on the insertion part 72. Therefore, when the seedling is picked up with the planting claw during transplanting, the root 11c is cut off at the part where the insertion part 72 is inserted, resulting in seedlings picked up with neat four corners. This can be expected to improve transplanting performance and the durability of the planting claw.

[0060] Figure 18 This shows the seedling mat 11, which has been lowered and is resting on the guide device 12. Reference numeral 14 indicates the connecting plate located behind the guide device 12.

[0061] Figure 19 After being shown, the seedling pad 11 mounted on the guide device 12 moves backward and is guided onto the arched connecting plate 14, while the seedling pad 70 moves upward to the upper part and returns to the front removal position.

[0062] The seedling box 10 (auxiliary seedlings) containing the new seedling pad 11 is placed in from the front. The inlet part 70 descends from above and penetrates the soil 11b of the seedbed. The seedling pad 11 is lifted from the seedling box and moved backward by the amount equivalent to one seedling pad 11. The seedling pad 11 is removed by the outlet part 13 and falls onto the guide device 12 and is guided backward.

[0063] Thus, a seedling-retrieving unit can be constructed, which automatically removes the auxiliary seedlings placed in front from the rear only from the seedling mat 11. The seedling-retrieving unit is a cuboid unit with the following dimensions: the longitudinal length is 1300mm, which is the sum of the length of the long side of the seedling box and the length of the guide device 12; the transverse length is 600mm, which is the sum of the length of the short side of the seedling box and the transverse movement length of the pull-out part 13; and the height is approximately twice the height of the auxiliary seedling, which is 400mm.

[0064] This unit can be configured by three actions: the up-and-down and back-and-forth movement of the take-in part 70, the left-and-right movement of the pull-out part 13, and the movement of the guide device 12.

[0065] As described later, the seedling box 10 (auxiliary seedlings) containing the new seedling pad 11 is newly supplied from the auxiliary seedling opening 15d located on the front surface 15c of the shell 15 to the removal position. Figure 19 (Left side of the image).

[0066] By inserting the new seedling box 10 into the removal position, the empty seedling box 10 existing in the removal position is pushed backward. The pushed-out empty seedling box 10 moves to the lower side of the guide device 12, where an empty box opening 15b is provided on the bottom surface 15a of the housing 15, and is discharged by its own weight. That is, an empty box opening 15b of a size that allows the seedling box 10 to fall downward is provided on the bottom surface 15a of the housing 15, below the guide device 12.

[0067] Therefore, the height of the guide device 12 is set to ensure that the seedling box 10 can move into the space.

[0068] In addition, an empty box storage compartment 16 for storing the empty seedling box 10 is provided below the opening 15b of the empty box, and the empty box storage compartment 16 covers the fertilizer applicator 4 and the engine 3 from above.

[0069] Therefore, within the seedling collection unit 7, the empty seedling box 10 can be discharged without the need for additional power to move it.

[0070] Figure 20 This is a perspective view of the seedling receiving unit 7, showing the situation where the seedling box 10, which houses the seedling mat 11 serving as an auxiliary seedling, is supplied from the auxiliary seedling opening 15d provided on the front surface 15c of its housing 15 to the inward extraction position. It also shows the situation where the seedling mat 11, separated from the insertion part 72 as described above, is fed from the seedling mat supply opening 15f provided on the rear surface 15e of the housing 15 towards the planting device 5 by means of the guide device 12.

[0071] Figure 21This is a perspective view showing the seedling unit 7 moving left and right on the track 9 as described above. The lower end 14a of the connecting plate 14 is configured to be located above the upper end of the seedling container 5a of the planting device 5 when it is raised to the highest position. The seedling pad 11 that slides down the connecting plate 14 is supplied to the seedling container 5a when it is raised to the highest position.

[0072] Thus, during actual seedling replenishment, if the planting device 5 is raised to its highest position, the seedling container 5a corresponding to the row of seedlings to be replenished will move the seedling taking unit 7 left and right, and the auxiliary seedlings will be supplied from the front by the auxiliary seedling rack unit 8. Then, the seedling mat 11 will be taken out from the seedling box 10, and the seedling mat 11 will be automatically discharged from the rear by the guide device 12. It will fall down onto the seedling container 5a by the weight of the seedling mat 11 along the connecting plate 14, thus automatically completing the seedling replenishment.

[0073] Figure 22 This is a perspective view of the empty box storage compartment 16, which houses the seedling boxes 10 that fall from the empty box opening 15b of the seedling collection unit 7, as described above. Its width covers the entire lower portion of the area from which the seedling collection unit 7 can move left and right. A fertilizer applicator 4, serving as an intermediate fertilizer applicator, and a fertilizer hopper are arranged near the lower part of the rear end of the seedling collection unit 7. When viewed from above, the empty box opening 15b overlaps approximately one-third of the length of the fertilizer applicator 4 and the fertilizer hopper in the front-to-back direction. Therefore, this portion forms a slope 16a, lower at the front and higher at the back, from the lower rear end of the seedling collection unit 7 to the upper front end of the fertilizer hopper.

[0074] An engine 3, serving as an intermediate engine, is positioned in the center of the driving section at the lower center of the seedling unit 7. This section is box-shaped, surrounding the engine 3 in all directions, with its upper surface 16b forming a mountain-shaped roof. Vertical surfaces 16c are further provided on the left and right sides of the engine 3, separated by a distance greater than the short side of the seedling box 10. Above each surface 16c, an inclined surface 16d, similar to the upper surface of the engine 3, is formed, rising outwards from the body.

[0075] In addition, regarding the movement range of the seedling-taking unit 7 other than the parts with the aforementioned surfaces, a plane is provided at the lowest possible position on the upper part of the traveling part of the rice transplanter, and these surfaces are connected to form a single surface.

[0076] By using a component that combines a horizontal plane, a vertical plane, and an inclined plane to form a single surface, the seedling boxes 10 discharged from the seedling collection unit 7 are piled up along the inclined planes on the horizontal planes to the left and right of the engine 3, allowing the seedling boxes 10 to be collected and recovered from here, thus increasing work efficiency.

[0077] Furthermore, the vertical surfaces 16c on the left and right outer sides of the machine body for accumulating the seedling boxes 10 on the left and right sides of the engine 3, and the inclined surfaces 16d rising obliquely upward from these vertical surfaces 16c, can also be configured to open 90 degrees outward from the machine body with the connection to the lowest horizontal surface as the axis of rotation 16e (refer to the imaginary lines in the figure). This ensures that the horizontal surface 16c, when opened at 90 degrees, has sufficient strength to allow even a worker to ride on it. Additionally, several horizontal grooves are pre-formed on the inclined surfaces 16d, which, by forming grooves shorter than the short side of the seedling boxes 10 but allowing the worker's toes to enter, also serve as lifting steps for the worker to ride on the rice transplanter. By opening the left and right side surfaces at 90 degrees in this way, the seedling boxes 10 become easier to retrieve.

[0078] Next, the auxiliary seedling rack unit 8 described above will be described in detail. For example... Figure 23 and the aforementioned Figure 1 , Figure 2 , Figure 3 As shown, an auxiliary seedling rack unit 8 is provided in front of the seedling taking unit 7.

[0079] The auxiliary seedling rack unit 8 consists of four longitudinally assembled column members 8a and multiple rows of frame units 8b that can be raised and lowered while supported by the column members 8a. Multiple layers of the multiple rows of frame units 8b can be arranged longitudinally on the column members 8a.

[0080] In this multi-column frame unit 8b, multiple guide members 8c are arranged side by side in the left-right direction, and a seedling box 10 can be slidably placed on each adjacent pair of guide members 8c. It should be noted that the arrangement of the guide members 8c corresponds to the position of each row of the planting device 5, and is arranged in a consistent manner with the previous and subsequent columns. For example, it corresponds to the position when the planting device 5 is near the left end. In this way, auxiliary seedlings are prepared in front of the vehicle body 100.

[0081] like Figure 24 , Figure 25 As shown, the seedling supply arm 8d protrudes forward and can move back and forth on the upper side of the auxiliary seedling opening 15d on the front surface 15c of the housing 15 of the seedling unit 7. A seedling supply plate 8e with a surface that is approximately parallel to the front surface 15c of the housing 15 is installed at the front end 8d1 of the seedling supply arm 8d.

[0082] In addition, as mentioned above, since the seedling unit 7 moves left and right, the seedling supply arm 8d also moves left and right. However, at this time, the front end 8d1 of the seedling supply arm 8d protrudes forward with ample space to avoid collision with the seedling boxes 10 on the multi-row frame units 8b of the auxiliary seedling frame unit 8.

[0083] Furthermore, the rear end 8d2 of the seedling supply arm 8d protrudes into the inner side of the housing 15, and this rear end 8d2 is fixed to the aforementioned take-up portion 70. Therefore, as the insert portion 72 of the take-up portion 70 moves upward toward the rearward guide device 12, the seedling supply arm 8d also moves rearward, and along with this, the seedling supply plate 8e also moves rearward, and the auxiliary seedling box 10, placed on the guide member 8c, is positioned in the take-up position through the auxiliary seedling opening 15d.

[0084] That is, by setting up multiple rows of multi-layered frame units 8b that can move in the vertical direction, as long as the frame moves up and down in a manner that is consistent with the height of the auxiliary seedling opening 15d of the seedling taking unit 7, auxiliary replenishment can be carried out simply by sliding the auxiliary seedling backward.

[0085] To further explain the seedling supply arm 8d, firstly, when the net section 71 and the insertion section 72 are in the take-out position, the seedling supply plate 8e is positioned further forward than the front surface position of the multi-row frame unit 8b.

[0086] At the very beginning, a seedling box 10 containing a seedling mat 11 is pre-placed at the seedling removal position of the seedling unit 7.

[0087] When the seedling unit 7 moves to the position of the currently needed row, the net section 71 and the insert section 72 descend as described above to remove the seedling pad 11, and then move towards the rearward guide device 12. At this time, when the net section 71 and the insert section 72 move rearward, the seedling supply arm 8d and the seedling supply plate 8e also move rearward. Therefore, the seedling supply plate 8e abuts against the auxiliary seedling box on the multi-row frame unit 8b and presses the auxiliary seedling box backward, positioning it in the removal position. Thus, preparation for the next row can be made.

[0088] In addition, as the auxiliary seedling box 10 moves to the removal position, the empty seedling box 10 that was previously in the removal position is pushed backward and moved by the movement of the auxiliary seedling box 10. It is pushed into the empty box opening 15b and falls down by its own weight. Thus, there is no need for a separate empty box recycling drive mechanism.

Claims

1. A seedling mat removal device, characterized in that: There are multiple needles under the net which is the same size as the seedling mat. The net can be raised and lowered in the vertical direction. When the net is lowered, the needles pierce the soil of the seedling bed of the seedling raising mat, and the pierced seedling raising mat is lifted from the seedling box, thereby taking the seedling raising mat out of the seedling box.

2. The seedling mat removal device according to claim 1, characterized in that: The needle is formed by combining two thin plates in a cross shape in such a way that the tip of the needle becomes thinner, and the needle has a barb portion.

3. The seedling mat removal device according to claim 1 or 2, characterized in that: The seedling mat removal device is provided with a seedling pulling-out part, which pulls out the seedling mat that is pierced and lifted by the needle from the needle. When the seedling pulling-out part presses the upper surface of the soil in the seedling bed, the tip of the needle is lifted and lowered from the state below the seedling pulling-out part to shift to the top of the seedling pulling-out part, thereby pulling out the seedling mat from the needle.

Images