Precise quantitative morchella drill seeder for greenhouse

Abstract

The invention relates to the field of morchella seeding, and discloses a greenhouse morchella precise quantitative drill seeder which comprises a traction assembly. A connecting assembly; a seeding assembly; a ploughing assembly; and a pressing assembly and a discharging assembly. By installing the angle-adjustable seeding assembly and driving the rotating strip through the first motor, the orientation and the inclination angle of the seed outlet can be dynamically and accurately changed, the hardness change of a seedbed and machine vibration are effectively coped, strains fall at the optimal angle, bounce and rolling of the strains after touching the ground are directly reduced, and the working efficiency is improved. The furrowing and seeding unit can accurately fall into a preset seedbed position, the problem of drop point deviation caused by non-adjustable angle of a fixed seeding pipe is solved, in addition, the seeding assembly and the ploughing assembly are linked through a hinge and an elastic element, so that the furrowing and seeding unit can passively adapt to surface fluctuation in the advancing process, and the consistency of seeding depth is maintained.

Description

Technical Field

[0001] This application relates to the field of morel mushroom sowing technology, and in particular to a precision quantitative strip seeder for morel mushrooms in greenhouses. Background Technology

[0002] In the field of morel mushroom cultivation, row sowing in greenhouses is one of the key links to achieve standardized production. At present, most of the equipment used for morel mushroom spawn sowing adopts a fixed sowing tube structure. These sowing tubes are usually kept stationary during operation, and the direction and angle of their spawn outlet are preset and cannot be dynamically adjusted.

[0003] In actual greenhouse row sowing operations, ideal sowing conditions are not constant due to variations in the flatness of the mushroom bed, the physical characteristics of the spawn itself, and fluctuations in the speed of the sowing machine. Existing sowing tubes lack effective active adjustment functions and cannot instantly and accurately rotate and adjust the orientation or tilt angle of the spawn outlet according to real-time working conditions during the sowing process. This functional deficiency may cause the falling spawn to bounce or roll on the surface of the mushroom bed, making it difficult to accurately land in the preset seed bed position or reach the ideal distribution depth. Especially when it is necessary to accurately place the spawn in specific areas, such as specific slopes of furrows or to avoid direct contact with base fertilizer, fixed-angle sowing tubes are not adaptable enough, affecting the straightness, uniformity, and final positional accuracy of sowing, thus negatively impacting the uniformity of mushroom growth and yield potential. Summary of the Invention

[0004] This application proposes a precision quantitative strip seeder for morel mushrooms in greenhouses, which has the advantages of high seeding accuracy, strong adaptability and outstanding operating efficiency. It solves the problems of inaccurate seeding point, poor uniformity and susceptibility to seedbed conditions caused by the inability to dynamically adjust the seeding angle of existing fixed seeding tubes.

[0005] To achieve the above objectives, this application adopts the following technical solution: a precision quantitative strip seeder for morel mushrooms in greenhouses, including a traction component, a connecting component movably installed on the right side of the traction component, and a linkage plowing and sowing mechanism, which includes multiple sowing components, all of which are fixedly installed on the right side of the connecting component, and plowing and compacting components are fixedly connected to the left and right ends of the multiple sowing components respectively, and a feeding component is fixedly installed on the top of the multiple sowing components;

[0006] The sowing component includes a long strip, with a fan-shaped frame movably hinged to the right side of the long strip. Multiple grooves are distributed in a fan shape on the outer side of the fan-shaped frame. A first motor is rotatably mounted at the bottom of the multiple grooves. A rotating bar is fixedly connected to the outer edge of the first motor. The output shaft of the first motor is fixedly connected to the outer side of the fan-shaped frame. A rubber wheel is rotatably mounted on the outer side of the fan-shaped frame.

[0007] Preferably, the rotating bar is made of metal and is elastic. A circular groove is formed on the inner side of the rotating bar, and a spring is elastically connected in the circular groove. A steel ball is movably installed at the other end of the spring. The steel ball is movably engaged in the circular groove, and the outer surface of the steel ball abuts against the groove. A guide ring is fixedly installed on the outer side of the rotating bar.

[0008] Preferably, the traction assembly includes a fixed block, a controller is mounted on the top of the fixed block, multiple electric shafts are fixedly mounted on both the front and rear sides of the fixed block, tracks are sleeved on the outer edges of the multiple electric shafts, and a C-shaped rod is fixedly connected to the right side of the fixed block.

[0009] Preferably, the connecting assembly includes a connecting plate, a circular hole is provided on the left side in a vertical direction, the circular hole is movably fitted onto the outer edge of the C-shaped rod, and two inclined blocks are fixedly connected to the right end of the connecting plate. A first square rod and a second square rod are respectively installed through the two inclined blocks from top to bottom, and the first square rod is fixedly connected to the long strip.

[0010] Preferably, the plowing assembly includes a first crossbar, which is fixedly connected to the left side of the sector frame. A telescopic rod is movably hinged to the top of the first crossbar, and a trapezoidal block is hinged to the other end of the telescopic rod. The other side of the trapezoidal block is movably hinged to the outside of the first crossbar. The trapezoidal block is fixedly connected to a second square rod. A curved rod is fixedly connected to the outside of the first crossbar, and a plowshare is movably hinged to the tail end of the curved rod.

[0011] Preferably, the pressing and straightening assembly includes a second crossbar, which is movably hinged to the right side of the sector frame. A clamping plate is fixedly installed on the top right side of the second crossbar, and a metal elastic rod is movably engaged inside the clamping plate. The left end of the metal elastic rod is movably inserted into the right side of the sector frame, and a leveling wheel is rotatably installed on the inner side of the second crossbar.

[0012] Preferably, the feeding assembly includes a seedling storage bin, with multiple support rods installed at the bottom of the seedling storage bin. The other ends of the support rods are fixedly connected to the inclined surface of the inclined block. A feed cover is movably hinged to the top of the seedling storage bin. Multiple air inlets are equidistantly opened at the tail of the seedling storage bin. A spiral rod is rotatably installed inside the seedling storage bin. A second motor is fixedly connected to the right rotating shaft of the spiral rod. A baffle is fixedly installed on the back of the spiral rod. An impeller is rotatably installed on the back of the baffle. A third motor is fixedly connected to the right rotating shaft of the impeller.

[0013] Preferably, the second motor and the third motor are both fixedly installed on the right side of the seedling storage bin. The baffle has multiple equidistant air supply holes, and each of the multiple air supply holes is equipped with a filter screen. Multiple seeding tubes are fixedly installed at the bottom of the seedling storage bin. All of the seeding tubes are made of rubber and are snapped into the inner wall of the guide ring.

[0014] The beneficial effects of this invention are as follows:

[0015] 1. This invention, by installing an adjustable-angle sowing component and driving a rotating bar with a first motor, can dynamically and precisely change the orientation and tilt angle of the seed outlet, effectively coping with changes in seed bed hardness and machine vibration, so that the spawn falls at the optimal angle, directly reducing the bouncing and rolling of the spawn after contact with the ground, ensuring that it falls accurately into the preset seed bed position, and solving the problem of landing point deviation caused by the fixed sowing tube due to the non-adjustable angle. In addition, the sowing component and the plowing component are linked by hinges and elastic elements, so that the furrowing and sowing units can passively adapt to the undulations of the ground during movement, maintaining the consistency of sowing depth.

[0016] 2. This invention, through the installation of a newly designed feeding mechanism and the use of a motor-driven screw rod for pushing, achieves uniform and controllable delivery of the spawn from the seedling storage bin to the sowing tube, effectively preventing overflow or interruption of the spawn and ensuring the uniformity of row sowing. The unique impeller air supply system generates airflow that can both provide micro-ventilation for the spawn in the seedling storage bin to prevent it from clumping and clogging the feeding port due to moisture, and assist in the smooth blowing of the spawn from the sowing tube, forming a positive airflow boost. Especially when sowing spawn with high humidity, this function can significantly improve the smoothness of feeding and ensure the continuous and stable operation of the sowing operation.

[0017] 3. This invention, by installing a compaction component with elastic properties, allows the leveling wheel at the end of the second crossbar to immediately backfill the soil on both sides of the sowing furrow into the furrow after the sowing process is completed, uniformly covering and initially compacting the sown inoculum. The metal elastic rod continuously applies downward elastic pressure to the second crossbar, ensuring that the leveling wheel maintains a constant compaction force when facing uneven ground, thereby maintaining a consistent soil covering thickness and creating a compact yet permeable ideal soil environment for inoculum germination. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles of this application in a clear and understandable manner.

[0019] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein:

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the traction component structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the connection component structure of the present invention;

[0023] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0024] Figure 5 This is a schematic diagram of the seeding component structure of the present invention;

[0025] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point B;

[0026] Figure 7 This is a schematic diagram of the steel ball structure of the present invention;

[0027] Figure 8 This is a rear view of the seeding component structure of the present invention;

[0028] Figure 9 This is a schematic diagram of the feeding assembly structure of the present invention.

[0029] The components include: 1. Traction assembly; 2. Connecting assembly; 3. Seeding assembly; 4. Plowing assembly; 5. Compaction assembly; 6. Feeding assembly; 11. Fixing block; 12. Controller; 13. Electric rotating shaft; 14. Track; 15. C-shaped rod; 21. Connecting plate; 22. Round hole; 23. Inclined block; 24. First square rod; 25. Second square rod; 31. Long strip; 32. Sector frame; 33. Groove; 34. First motor; 35. Rotating bar. 36. Spring; 37. Steel ball; 38. Guide ring; 39. Rubber wheel; 41. First crossbar; 42. Telescopic rod; 43. Trapezoidal block; 44. Plowshare; 51. Second crossbar; 52. Clamping plate; 53. Metal elastic rod; 54. Leveling wheel; 61. Seedling storage bin; 62. Feed cover; 63. Air inlet; 64. Spiral rod; 65. Second motor; 66. Baffle plate; 67. Impeller; 68. Third motor; 69. Seeding tube. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0031] Please see Figure 1-9The greenhouse morel mushroom precision quantitative strip seeder of this embodiment includes a traction component 1, a connecting component 2 movably installed on the right side of the traction component 1, and a linkage plowing and sowing mechanism, which includes multiple sowing components 3. The multiple sowing components 3 are all fixedly installed on the right side of the connecting component 2. The left and right ends of the multiple sowing components 3 are respectively fixedly connected to a plowing component 4 and a compaction component 5. A feeding component 6 is fixedly installed on the top of the multiple sowing components 3.

[0032] The seeding component 3 includes a long strip 31, with a fan-shaped frame 32 hinged to the right side of the long strip 31. Multiple grooves 33 are distributed in a fan shape on the outer side of the fan-shaped frame 32. A first motor 34 is rotatably mounted at the bottom of the multiple grooves 33. A rotating bar 35 is fixedly connected to the outer edge of the first motor 34. The output shaft of the first motor 34 is fixedly connected to the outer side of the fan-shaped frame 32. A rubber wheel 39 is rotatably mounted on the outer side of the fan-shaped frame 32. The rotating bar 35 is made of metal and is elastic. A circular groove is opened on the inner side of the rotating bar 35. A spring 36 is elastically connected in the circular groove. A steel ball 37 is movably mounted on the other end of the spring 36. The steel ball 37 is movably engaged in the circular groove. The outer surface of the steel ball 37 abuts against the groove 33. A guide ring 38 is fixedly mounted on the outer side of the rotating bar 35.

[0033] When the seed bed is hard or the machine vibrates, the rotating bar 35 can be controlled by rotating the first motor 34 and its angle can be adjusted so that the inoculum falls at an angle closer to the bottom of the trench, reducing bouncing. The inner side of the rotating bar 35 is elastically positioned with the groove 33 through the spring 36 and the steel ball 37, which not only ensures the flexibility of adjustment, but also provides stable structural support during non-adjustment periods.

[0034] The traction assembly 1 includes a fixed block 11, a controller 12 is mounted on the top of the fixed block 11, and multiple electric rotating shafts 13 are fixedly mounted on both the front and rear sides of the fixed block 11. Tracks 14 are sleeved on the outer edges of the multiple electric rotating shafts 13. A C-shaped rod 15 is fixedly connected to the right side of the fixed block 11. The connecting assembly 2 includes a connecting plate 21. A circular hole 22 is opened vertically on the left side of the connecting plate 21. The circular hole 22 is movably sleeved on the outer edge of the C-shaped rod 15. Two inclined blocks 23 are fixedly connected to the right end of the connecting plate 21. A first square rod 24 and a second square rod 25 are respectively installed through the two inclined blocks 23 from top to bottom. The first square rod 24 is fixedly connected to the long strip 31.

[0035] The traction assembly 1 provides power, and the controller 12 sends a command to the electric shaft 13 to drive the track 14, causing the whole machine to move forward at a constant speed along the mushroom bed. The connecting assembly 2 is movably connected to the circular hole 22 on the connecting plate 21 via the C-shaped rod 15, and can adaptively float relative to the traction assembly 1 within a certain range.

[0036] The plowing assembly 4 includes a first crossbar 41, which is fixedly connected to the left side of the sector frame 32. A telescopic rod 42 is movably hinged to the top of the first crossbar 41. A trapezoidal block 43 is hinged to the other end of the telescopic rod 42. The other side of the trapezoidal block 43 is movably hinged to the outside of the first crossbar 41. The trapezoidal block 43 is fixedly connected to the second square rod 25. A bent rod is fixedly connected to the outside of the first crossbar 41. A plowshare 44 is movably hinged to the tail end of the bent rod.

[0037] When the machine moves forward, the plowing assembly 4 will work first. The plowshare 44, fixed to the front end of the first crossbar 41, will break the soil and open furrows under the traction of the implement, forming a seedbed that meets the requirements. When passing through a bumpy area, the rubber wheel 39 will compress the length of the telescopic rod 42, thereby changing the angle of the trapezoidal block 43, which in turn will drive the first crossbar 41 and the plowshare 44 to rotate around their hinge point, thereby achieving passive adjustment of the furrow depth and angle.

[0038] The pressing and straightening assembly 5 includes a second crossbar 51, which is movably hinged to the right side of the sector frame 32. A clamping plate 52 is fixedly installed on the top right side of the second crossbar 51. A metal elastic rod 53 is movably engaged inside the clamping plate 52. The left end of the metal elastic rod 53 is movably inserted into the right side of the sector frame 32. A leveling wheel 54 is rotatably installed on the inner side of the second crossbar 51.

[0039] After sowing, the compaction component 5 immediately starts working. The leveling wheel 54 at the end of the second crossbar 51 backfills the soil on both sides of the sowing furrow, covering and initially compacting the sown inoculum. The metal elastic rod 53 provides downward elastic pressure to the second crossbar 51, ensuring that the leveling wheel 54 has a constant compaction force on the ground, making the soil covering thickness uniform and creating a good soil environment for inoculum germination.

[0040] The feeding assembly 6 includes a seedling storage bin 61. Multiple support rods are installed at the bottom of the seedling storage bin 61, with the other ends of the support rods fixedly connected to the inclined surface of the inclined block 23. A feed cover 62 is movably hinged to the top of the seedling storage bin 61. Multiple air inlets 63 are equidistantly opened at the tail of the seedling storage bin 61. A spiral rod 64 is rotatably installed inside the seedling storage bin 61. A second motor 65 is fixedly connected to the right rotating shaft of the spiral rod 64. A baffle 66 is fixedly installed on the back of the spiral rod 64. An impeller 67 is rotatably installed on the back of the baffle 66. A third motor 68 is fixedly connected to the right rotating shaft of the impeller 67. Both the second motor 65 and the third motor 68 are fixedly installed on the right side of the seedling storage bin 61. Multiple equidistant air supply holes are opened on the baffle 66, and filters are installed inside each of the multiple air supply holes. Multiple seeding tubes 69 are fixedly installed at the bottom of the seedling storage bin 61. All seeding tubes 69 are made of rubber and are snapped into the inner wall of the guide ring 38.

[0041] When the second motor 65 in the feeding assembly 6 drives the screw rod 64 to rotate, it can push the inoculum in the seed storage chamber 61 evenly and quantitatively to the sowing tube 69. The air inlet 63 at the tail of the seed storage chamber 61 and the impeller 67 constitute an auxiliary system. The third motor 68 drives the impeller 67 to rotate, generating airflow. On the one hand, it can provide a small amount of ventilation in the seed storage chamber 61 to prevent the inoculum from clumping. On the other hand, the airflow also helps to blow the inoculum out of the sowing tube 69, ensuring smooth feeding.

[0042] Working principle:

[0043] When using this equipment, the traction component 1 provides power first, and the controller 12 issues a command to drive the electric shaft 13 to drive the track 14, which in turn drives the whole machine to move forward at a constant speed along the mushroom bed. The connecting component 2 can adaptively float relative to the traction component 1 within a certain range through the movable connection of the C-shaped rod 15 and the circular hole 22 on the connecting plate 21.

[0044] When the machine moves forward, the plowing assembly 4 will work first. The plowshare 44, fixed to the front end of the first crossbar 41, will break the soil and open furrows under the traction of the implement, forming a seedbed that meets the requirements. When passing through a bumpy area, the rubber wheel 39 will compress the length of the telescopic rod 42, thereby changing the angle of the trapezoidal block 43, which in turn will drive the first crossbar 41 and the plowshare 44 to rotate around their hinge point, thereby achieving passive adjustment of the furrow depth and angle.

[0045] During the movement of the equipment, the second motor 65 in the feeding assembly 6 drives the screw rod 64 to rotate, pushing the inoculum in the seed storage chamber 61 evenly and quantitatively to the sowing tube 69; the air inlet 63 at the tail of the seed storage chamber 61 and the impeller 67 constitute an auxiliary system, and the third motor 68 drives the impeller 67 to rotate, generating airflow. On the one hand, it can provide a small amount of ventilation in the seed storage chamber 61 to prevent the inoculum from clumping; on the other hand, the airflow also helps to blow the inoculum out of the sowing tube 69, ensuring smooth feeding.

[0046] When the seed bed is hard or the machine vibrates, the rotating bar 35 can be controlled by rotating the first motor 34 and its angle can be adjusted so that the inoculum falls at an angle closer to the bottom of the trench, reducing bouncing. The inner side of the rotating bar 35 is elastically positioned with the groove 33 through the spring 36 and the steel ball 37, which not only ensures the flexibility of adjustment, but also provides stable structural support during non-adjustment periods.

[0047] After sowing, the compaction assembly 5 immediately begins to work. The leveling wheel 54 at the end of the second crossbar 51 backfills the soil on both sides of the sowing furrow, covering and initially compacting the sown inoculum. The metal elastic rod 53 provides downward elastic pressure to the second crossbar 51, ensuring that the leveling wheel 54 has a constant compaction force on the ground, making the soil covering thickness uniform and creating a good soil environment for inoculum germination.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A precision quantitative strip seeder for morel mushrooms in greenhouses, comprising a traction component (1), characterized in that, The traction assembly (1) is movably mounted with a connecting assembly (2) on its right side, and also includes, The linkage plowing and sowing mechanism includes multiple sowing components (3), all of which are fixedly installed on the right side of the connecting component (2). The left and right ends of the multiple sowing components (3) are respectively fixedly connected to a plowing component (4) and a compaction component (5), and a feeding component (6) is fixedly installed on the top of the multiple sowing components (3). The seeding component (3) includes a strip (31), a fan-shaped frame (32) is movably hinged to the right side of the strip (31), and a plurality of grooves (33) are distributed in a fan shape on the outer side of the fan-shaped frame (32). A first motor (34) is rotatably mounted at the bottom of the plurality of grooves (33). A rotating bar (35) is fixedly connected to the outer edge of the first motor (34). The output shaft of the first motor (34) is fixedly connected to the outer side of the fan-shaped frame (32). A rubber wheel (39) is rotatably mounted on the outer side of the fan-shaped frame (32).

2. The precision quantitative strip seeding machine for morel mushrooms in greenhouses according to claim 1, characterized in that, The rotating bar (35) is made of metal and is elastic. A circular groove is provided on the inner side of the rotating bar (35). A spring (36) is elastically connected in the circular groove. A steel ball (37) is movably installed at the other end of the spring (36). The steel ball (37) is movably engaged in the circular groove. The outer surface of the steel ball (37) abuts against the groove (33). A guide ring (38) is fixedly installed on the outer side of the rotating bar (35).

3. The greenhouse morel mushroom precision quantitative strip seeding machine according to claim 2, characterized in that, The traction assembly (1) includes a fixed block (11), a controller (12) is mounted on the top of the fixed block (11), and multiple electric rotating shafts (13) are fixedly mounted on both the front and rear sides of the fixed block (11). Tracks (14) are sleeved on the outer edges of the multiple electric rotating shafts (13), and a C-shaped rod (15) is fixedly connected to the right side of the fixed block (11).

4. A precision quantitative strip seeder for morel mushrooms in greenhouses according to claim 3, characterized in that, The connecting assembly (2) includes a connecting plate (21). A circular hole (22) is provided vertically on the left side of the connecting plate (21). The circular hole (22) is movably fitted onto the outer edge of the C-shaped rod (15). Two inclined blocks (23) are fixedly connected to the right end of the connecting plate (21). A first square rod (24) and a second square rod (25) are respectively installed through the two inclined blocks (23) from top to bottom. The first square rod (24) is fixedly connected to the long strip (31).

5. A precision quantitative strip seeder for morel mushrooms in greenhouses according to claim 4, characterized in that, The plowing assembly (4) includes a first crossbar (41), which is fixedly connected to the left side of the sector frame (32). A telescopic rod (42) is movably hinged to the top of the first crossbar (41). A trapezoidal block (43) is hinged to the other end of the telescopic rod (42). The other side of the trapezoidal block (43) is movably hinged to the outside of the first crossbar (41). The trapezoidal block (43) is fixedly connected to a second square rod (25). A bent rod is fixedly connected to the outside of the first crossbar (41). A plowshare (44) is movably hinged to the tail end of the bent rod.

6. A precision quantitative strip seeder for morel mushrooms in greenhouses according to claim 5, characterized in that, The pressing assembly (5) includes a second crossbar (51), which is movably hinged to the right side of the sector frame (32). A clamping plate (52) is fixedly installed on the top right side of the second crossbar (51). A metal elastic rod (53) is movably engaged inside the clamping plate (52). The left end of the metal elastic rod (53) is movably inserted into the right side of the sector frame (32). A leveling wheel (54) is rotatably installed on the inner side of the second crossbar (51).

7. A precision quantitative strip seeder for morel mushrooms in greenhouses according to claim 6, characterized in that, The feeding assembly (6) includes a seedling storage bin (61). Multiple support rods are installed at the bottom of the seedling storage bin (61). The other end of the multiple support rods is fixedly connected to the inclined surface of the inclined block (23). A feed cover (62) is movably hinged to the top of the seedling storage bin (61). Multiple air inlets (63) are equidistantly opened at the tail of the seedling storage bin (61). A spiral rod (64) is rotatably installed inside the seedling storage bin (61). A second motor (65) is fixedly connected to the right rotating shaft of the spiral rod (64). A baffle (66) is fixedly installed on the back of the spiral rod (64). An impeller (67) is rotatably installed on the back of the baffle (66). A third motor (68) is fixedly connected to the right rotating shaft of the impeller (67).

8. A precision quantitative strip seeder for morel mushrooms in greenhouses according to claim 7, characterized in that, The second motor (65) and the third motor (68) are both fixedly installed on the right side of the seedling storage bin (61). The baffle (66) has multiple equidistant air supply holes, and each of the multiple air supply holes is equipped with a filter screen. Multiple seeding tubes (69) are fixedly installed at the bottom of the seedling storage bin (61). All of the multiple seeding tubes (69) are made of rubber and are all snapped into the inner wall of the guide ring (38).

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