Naked seedling belt film ironing mechanism and film ironing method for mechanical transplanting

Abstract

The invention discloses a bare seedling belt film ironing mechanism for mechanical transplanting and a film ironing method, the film ironing mechanism comprises an ironing knife mechanism and a bare seedling jig, and the ironing knife mechanism comprises a seat body and a film ironing unit fixed on the seat body; the bare seedling jig is provided with a base plate matched with the hot film unit; the bare seedling jig further comprises an upper seedling clamp and a lower seedling clamp which are arranged at the two ends of the base plate respectively. The partition plate is connected with the seat body, and a gap is formed between the partition plate and the seat body; the partition plate is provided with a notch which is opened downwards, and the notch is trumpet-shaped; the multiple film ironing units are columnar, the multiple film ironing units are divided into two sets to be arranged on the two sides of the partition plate respectively, and each set of film ironing units is arranged along a line parallel to the side edge of the notch. The mechanism and the method provided by the invention fully adapt to the characteristics of heat sealing of bare seedlings, and the formed heat points not only can fully restrain the bare seedlings, but also can conveniently separate the upper film from the lower film in subsequent use to release the bare seedlings.

Description

Technical Field

[0001] The invention relates to the technical field of production of bare seedling belts for agricultural transplanting, and in particular to a bare seedling belt hot-filming mechanism and a hot-filming method for mechanized transplanting. Background Art

[0002] In the field of agricultural cultivation, crops such as sweet potato, Chinese medicinal materials, rice, rapeseed can be planted by naked seedling transplanting, and naked seedling refers to seedlings that are not wrapped with matrix or soil during transplanting, and these seedlings have leaves. Taking sweet potato as an example, sweet potato seedling transplanting technology is a key link to improve sweet potato yield and quality. Traditional sweet potato seedling transplanting relies on manual labor, which is inefficient and labor-intensive. With the development of agricultural mechanization, there has been an automated transplanting technology based on sweet potato seedling belt, such as the technology disclosed in the patents such as the applicant's prior application CN118451865A and CN118370062A, which is formed by sandwiching the sweet potato seedling between the upper film and the lower film, and the upper film and the lower mold are gradually peeled off when in use, so that the sweet potato seedling is separated from the upper film and the lower film to the transplanting seedling groove, and the continuous transplanting of the sweet potato seedling is realized. However, the technical requirements for producing naked seedling belts are relatively high, mainly because of the physical properties of naked seedlings, making it more difficult to produce naked seedling belts. In the prior art, patent CN118953794A involves hot-melt encapsulation of rhizome Chinese medicinal seedlings, which includes a hot-melt encapsulation device capable of hot-melt encapsulation of medicinal seedlings. The hot-melt encapsulation device includes two ceramic hot-melt sheets, which are respectively used to hot-melt the films on both sides of the medicinal seedlings to form two hot-melt strips. This technical solution has the following defects: (1) When the upper and lower films of the long hot-melt strip are torn apart during the subsequent use of the seedlings, the upper film or the lower film is easily broken; (2) When the above structure is applied to the encapsulation process of bare seedlings such as sweet potato seedlings with leaves, In the process of hot-melting, the two parallel hot-melt belts formed are difficult to fix the naked seedlings well, and the naked seedlings are easy to move; (3) The positioning mechanism on the conveyor belt in CN118953794A is only suitable for seedlings with regular shapes such as Chinese medicinal material seedlings. The positioning effect is poor for seedlings with multiple leaves and irregular shapes such as sweet potato seedlings, and the ceramic hot-melt sheet will burn the conveyor belt during the hot-melting process, and the firmness of the hot-melt belt cannot be guaranteed; (4) If the upper and lower films are not attached during the hot-melting process, the ceramic hot-melt sheet will first contact the upper film, which may cause the upper film to deform or break easily, affecting the packaging quality. Therefore, the development of hot-melting technology suitable for the characteristics of naked seedlings has become a technical problem that needs to be solved urgently in this field. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a bare seedling hot sealing mechanism and method for mechanized transplanting, which can adapt to the characteristics of bare seedlings to perform hot sealing operations, ensure the packaging quality and subsequent stability of use.

[0004] Technical solution: To achieve the above-mentioned purpose, the bare seedling film-scalding mechanism for mechanized transplanting of the present invention comprises a scalding knife mechanism and a bare seedling jig, wherein the scalding knife mechanism comprises a seat body and a scalding film unit fixed on the seat body; the bare seedling jig has a pad used in conjunction with the scalding film unit;

[0005] The bare seedling fixture also includes an upper seedling clamp and a lower seedling clamp respectively disposed at two ends of the pad;

[0006] The ironing knife mechanism further includes a partition, which is connected to the seat body with a gap therebetween, so that the heat of the seat body will not be transferred to the partition; the partition is a U-shaped bending part, which has a notch open downward, and the notch is trumpet-shaped;

[0007] The hot stamping units are columnar and there are multiple of them. All the hot stamping units are divided into two groups and arranged on both sides of the partition respectively. Each group of hot stamping units is arranged along a line parallel to the side of the slot, that is, the two arrangement lines corresponding to the two groups of hot stamping units also form a trumpet shape.

[0008] The above structure is fully adapted to the characteristics of hot-sealing naked seedlings. The trumpet-shaped notch below the partition adapts to the appearance characteristics of naked seedlings, and can cover the naked seedlings during the hot-filming process to prevent scalding of the seedlings and restrain the naked seedlings from shifting. The two rows of trumpet-shaped hot spots formed by all the hot-filming units can not only fully restrain the naked seedlings, but also facilitate the separation of the upper and lower films in subsequent use to release the naked seedlings.

[0009] Furthermore, a first positioning groove and a second positioning groove are formed on the upper seedling clamp and the lower seedling clamp respectively; the width of the first positioning groove is wider than the width of the second positioning groove.

[0010] Furthermore, the first positioning groove and the second positioning groove are provided with a first V-shaped groove and a second V-shaped groove above them, respectively, so that the head and the tail of the naked seedling can be conveniently inserted into the first V-shaped groove and the second V-shaped groove, respectively.

[0011] Furthermore, the partition is connected to the base body by a plurality of screws; the screws are fixed relative to the base body, the partition can move up and down relative to the screws, and a compression spring is arranged between the partition and the base body. When the hot stamping operation is performed, the lower end of the partition first presses the upper and lower films onto the pad, and then the base body continues to drop a certain distance so that the compression spring produces a certain amount of compression, and the hot stamping unit presses the upper and lower films onto the pad to form a hot spot. In this way, it can be ensured that before the hot stamping, the seedling vines of the bare seedlings are fixed in place and the upper and lower molds on both sides of the partition are fully fitted, ensuring the success of the hot stamping.

[0012] Furthermore, a heating column is installed on the side of the base, which is connected to a heat source and can transfer heat to the hot stamping unit. In actual use, there are multiple heating columns. In one solution, the entire base can be used as a medium for transferring heat; in another solution, the base can be made of a non-heat-conductive material, and each heating column is connected to multiple hot stamping units.

[0013] Furthermore, the bare seedling fixture further comprises an anti-rotation plate; the number of the pads is two, and the anti-rotation plate is placed between the two pads; the two ends of the anti-rotation plate are respectively fixedly connected to the upper seedling clamp and the lower seedling clamp. The pad is a flexible heat-insulating pad.

[0014] Furthermore, a plurality of the bare seedling jigs are fixed on a conveyor belt, and the conveyor belt can drive the bare seedling jigs to translate. In this way, the conveyor belt can bring the bare seedling jigs to the bottom of the hot knife mechanism in sequence, perform hot film operations in sequence, and form a bare seedling belt.

[0015] The anti-rotation plate is fixed to the conveyor belt by screws, and the anti-rotation plate can prevent the seedling clamp from rotating after a long period of work and affecting the clamped seedlings. The pad is fixed to the conveyor belt by hot melt, and its functions are to prevent the hot film unit from damaging the conveyor belt, and to ensure that the ends of all hot film units can resist the pad and perform the hot film operation at the same time during hot sealing, and form hot spots at the same time. The flexible heat-insulating pad ensures that the hot spots are firm.

[0016] A method for hot-filming bare seedlings for mechanized transplanting, which is applied to the above-mentioned hot-filming bare seedlings mechanism for mechanized transplanting, comprises the following steps:

[0017] Step 1), placing the lower film between the upper seedling clamp and the lower seedling clamp, placing the naked seedling on the lower film, and placing the head and tail of the naked seedling on the upper seedling clamp and the lower seedling clamp respectively, and then covering the naked seedling with the upper film;

[0018] Step 2), the hot knife mechanism moves toward the direction close to the bare seedling fixture until the partition buckles and covers the bare seedling vines, and all the hot film units press the upper and lower films against the pad to form two rows of hot spots arranged in a trumpet shape;

[0019] Step 3), the hot knife mechanism moves in a direction away from the bare seedling fixture.

[0020] Beneficial effects: The hot film mechanism and hot film method for bare seedlings used for mechanized transplanting of the present invention fully adapt to the characteristics of hot-sealing bare seedlings. The trumpet-shaped notch below the partition adapts to the appearance characteristics of bare seedlings, and can cover the bare seedlings during the hot film process to prevent scalding of the seedling vines and restrain the bare seedlings from shifting. The two rows of hot film points arranged in a trumpet shape formed by all the hot film units can not only fully restrain the bare seedlings, but also facilitate the separation of the upper and lower films in subsequent use to release the bare seedlings. This structure is suitable for hot-sealing bare seedlings of crops such as sweet potatoes, Chinese medicinal materials, large rice seedlings, and large rapeseed seedlings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of a bare seedling film-scalding mechanism used for mechanized transplanting;

[0022] Figure 2 A three-dimensional diagram of a hot film mechanism for bare seedlings used in mechanized transplanting;

[0023] Figure 3 This is the structural diagram of the bare seedling fixture;

[0024] Figure 4 It is a three-dimensional diagram of the hot knife mechanism;

[0025] Figure 5 It is a front view of the hot knife mechanism;

[0026] Figure 6 This is the combined structural diagram of the bare seedling fixture, conveyor belt and bare seedling belt.

[0027] In the figure: 1-hot knife mechanism; 11-base; 12-hot film unit; 13-partition; 14-screw; 15-compression spring; 16-heating column; 2-bare seedling fixture; 21-pad; 22-upper seedling clamp; 22a-first positioning groove; 22b-first V-shaped groove; 23-lower seedling clamp; 23a-second positioning groove; 23b-second V-shaped groove; 24-anti-rotation plate; 3-conveyor belt. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] like Figure 1 and Figure 2 The bare seedling film-scalding mechanism for mechanized transplanting shown in the figure comprises a scalding knife mechanism 1 and a bare seedling fixture 2. The scalding knife mechanism 1 comprises a base 11 and a scalding film unit 12 fixed on the base 11; the bare seedling fixture 2 comprises a pad 21 used in conjunction with the scalding film unit 12;

[0030] like Figure 3 As shown, the bare seedling fixture 2 further includes an upper seedling clamp 22 and a lower seedling clamp 23 respectively disposed at two ends of the pad 21;

[0031] like Figure 4 and Figure 5 As shown, the ironing knife mechanism 1 further includes a partition 13, the partition 13 is connected to the base 11 with a gap therebetween, so that the heat of the base 11 will not be conducted to the partition 13; the partition 13 is a U-shaped bending part, which has a notch open downward, and the notch is trumpet-shaped;

[0032] The hot stamping units 12 are columnar and there are multiple of them. All the hot stamping units 12 are divided into two groups and arranged on both sides of the partition 13 respectively. Each group of the hot stamping units 12 is arranged along a line parallel to the side of the notch, that is, the two arrangement lines corresponding to the two groups of hot stamping units 12 also form a trumpet shape.

[0033] During use, if Figure 6 As shown, the lower film is placed between the upper seedling clamp 22 and the lower seedling clamp 23, the bare seedling is placed on the lower film, and the head and tail of the bare seedling are placed on the upper seedling clamp 22 and the lower seedling clamp 23 respectively, and then the upper film is covered on the bare seedling. During the hot filming process, the hot knife mechanism 1 moves in the direction close to the bare seedling fixture 2 until the partition 13 is buckled and covered on the seedling vine of the bare seedling, and all the hot film units 12 press the upper and lower films against the pad 21 to form two rows of hot spots arranged in a trumpet shape. Then the hot knife mechanism 1 moves in the direction away from the bare seedling fixture 2, and the hot sealing process of a bare seedling is completed.

[0034] The above structure is fully adapted to the characteristics of hot-sealing naked seedlings. The trumpet-shaped notch below the partition 13 is adapted to the appearance characteristics of naked seedlings, and can cover the naked seedlings during the hot film process to prevent scalding of the seedlings and restrain the naked seedlings from deflecting. The two rows of trumpet-shaped hot spots formed by all the hot film units 12 can not only fully restrain the naked seedlings, but also facilitate the separation of the upper and lower films in subsequent use to release the naked seedlings.

[0035] Preferably, if Figure 3 As shown, the upper seedling clamp 22 and the lower seedling clamp 23 are respectively formed with a first positioning groove 22a and a second positioning groove 23a; the width of the first positioning groove 22a is wider than the width of the second positioning groove 23a. The first V-shaped groove 22b and the second V-shaped groove 23b are respectively formed above the first positioning groove 22a and the second positioning groove 23a. In this way, the head and tail of the naked seedling can be easily inserted into the first V-shaped groove 22b and the second V-shaped groove 23b respectively.

[0036] The partition 13 is connected to the base 11 by a plurality of screws 14; the screws 14 are fixed relative to the base 11, and the partition 13 can move up and down relative to the screws 14, and a compression spring 15 is arranged between the partition 13 and the base 11. When the film is hot-stamped, the lower end of the partition 13 first presses the upper and lower films onto the pad 21, and then the base 11 continues to drop a distance so that the compression spring 15 produces a certain amount of compression, and the hot-stamping unit 12 presses the upper and lower films onto the pad 21 to form a hot spot. In this way, it can be ensured that before the hot-stamping, the seedling vines of the bare seedlings are fixed in place and the upper and lower molds on both sides of the partition 13 are fully fitted, ensuring the success of the hot-stamping.

[0037] A heating column 16 is also installed on the side of the base 11, and the heating column 16 is connected to a heat source and can transfer heat to the hot stamping unit 12. In actual use, there are multiple heating columns 16. In one solution, the entire base 11 can be used as a medium for transferring heat; in another solution, the base 11 can be made of a non-heat-conductive material, and each heating column 16 is connected to multiple hot stamping units 12.

[0038] The bare seedling fixture 2 further includes an anti-rotation plate 24; the number of the pads 21 is two, and the anti-rotation plate 24 is placed between the two pads 21; the two ends of the anti-rotation plate 24 are respectively fixedly connected to the upper seedling clamp 22 and the lower seedling clamp 23. The pad 21 is a flexible heat-insulating pad.

[0039] Preferably, a plurality of the bare seedling jigs 2 are fixed on a conveyor belt 3, and the conveyor belt 3 can drive the bare seedling jigs 2 to translate. In this way, the conveyor belt 3 can bring the bare seedling jigs 2 to the bottom of the hot knife mechanism 1 in sequence, perform the hot film operation in sequence, and form a bare seedling belt.

[0040] The anti-rotation plate 24 is fixed to the conveyor belt 3 by screws, and the anti-rotation plate 24 can prevent the seedling clamp from rotating after a long period of work and affecting the clamped seedlings. The pad 21 is fixed to the conveyor belt 3 by hot melt, and its functions are to prevent the hot film unit 12 from damaging the conveyor belt 3, and to ensure that the ends of all the hot film units 12 can resist the pad 21 and perform the hot film operation at the same time during hot sealing, and form hot spots at the same time. The flexible heat-insulating pad ensures that the hot spots are firm.

[0041] The present invention also provides a bare seedling hot film method for mechanized transplanting, which is applied to the bare seedling hot film mechanism for mechanized transplanting, and the method comprises the following steps:

[0042] Step 1), placing the lower film between the upper seedling clamp 22 and the lower seedling clamp 23, placing the naked seedling on the lower film, and placing the head and tail of the naked seedling on the upper seedling clamp 22 and the lower seedling clamp 23 respectively, and then covering the naked seedling with the upper film;

[0043] Step 2), the hot knife mechanism 1 moves towards the direction close to the bare seedling fixture 2 until the partition 13 is buckled and covered on the bare seedling vines, and all the hot film units 12 press the upper and lower films against the pad 21 to form two rows of hot spots arranged in a trumpet shape;

[0044] Step 3), the ironing knife mechanism 1 moves in a direction away from the bare seedling fixture 2.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A bare seedling hot film mechanism for mechanized transplanting, comprising a hot film mechanism (1) and a bare seedling jig (2), wherein the hot film mechanism (1) comprises a base (11) and a hot film unit (12) fixed on the base (11); the bare seedling jig (2) has a pad (21) used in conjunction with the hot film unit (12); the characteristics are: The bare seedling fixture (2) further comprises an upper seedling clamp (22) and a lower seedling clamp (23) respectively disposed at two ends of the pad (21); The ironing knife mechanism (1) further comprises a partition (13), wherein the partition (13) is connected to the base (11) with a gap therebetween; the partition (13) has a notch opening that opens downwards, and the notch is in a trumpet shape; The hot stamping units (12) are columnar and there are multiple of them. All the hot stamping units (12) are divided into two groups and arranged on both sides of the partition (13), and each group of hot stamping units (12) is arranged along a line parallel to the side of the slot.

2. The bare seedling hot film mechanism for mechanized transplanting according to claim 1, characterized in that: A first positioning groove (22a) and a second positioning groove (23a) are respectively formed on the upper seedling clamp (22) and the lower seedling clamp (23); the width of the first positioning groove (22a) is wider than the width of the second positioning groove (23a).

3. The bare seedling hot film mechanism for mechanized transplanting according to claim 2, characterized in that: A first V-shaped groove (22b) and a second V-shaped groove (23b) are respectively provided above the first positioning groove (22a) and the second positioning groove (23a).

4. The bare seedling hot film mechanism for mechanized transplanting according to claim 1, characterized in that: The partition (13) is connected to the seat body (11) via a plurality of screws (14); the partition (13) can move up and down relative to the screws (14); and a compression spring (15) is provided between the partition (13) and the seat body (11).

5. The bare seedling hot film mechanism for mechanized transplanting according to claim 1, characterized in that: A heating column (16) is also installed on the side of the base body (11); the heating column (16) is connected to a heat source and can transfer heat to the hot stamping unit (12).

6. The bare seedling hot film mechanism for mechanized transplanting according to claim 1, characterized in that: The bare seedling fixture (2) further comprises an anti-rotation plate (24); the number of the pads (21) is two, and the anti-rotation plate (24) is placed between the two pads (21); the two ends of the anti-rotation plate (24) are respectively fixedly connected to the upper seedling clamp (22) and the lower seedling clamp (23).

7. The bare seedling hot film mechanism for mechanized transplanting according to claim 1, characterized in that: A plurality of the bare seedling jigs (2) are fixed on a conveyor belt (3), and the conveyor belt (3) can drive the bare seedling jigs (2) to move horizontally.

8. A method for hot-filming bare seedlings for mechanized transplanting, which is applied to the hot-filming bare seedlings mechanism for mechanized transplanting as claimed in any one of claims 1 to 7, characterized in that: The method comprises the following steps: Step 1), placing the lower film between the upper seedling clamp (22) and the lower seedling clamp (23), placing the naked seedling on the lower film, and placing the head and tail of the naked seedling on the upper seedling clamp (22) and the lower seedling clamp (23) respectively, and then covering the naked seedling with the upper film; Step 2), the hot knife mechanism (1) moves towards the direction approaching the bare seedling fixture (2) until the partition (13) is buckled and covered on the bare seedling vines, and all the hot film units (12) press the upper and lower films against the pad (21), forming two rows of hot spots arranged in a trumpet shape; Step 3), the ironing knife mechanism (1) moves in a direction away from the bare seedling fixture (2).

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