Agricultural planting frame

Abstract

The invention discloses an agricultural planting frame, and relates to the technical field of agricultural planting, the agricultural planting frame comprises a base, supporting columns are symmetrically arranged at the upper end of the base, a rotating shaft is arranged between the two supporting columns, an adjusting ring is slidably mounted on the outer surface of the rotating shaft, and a plurality of sets of push rods are uniformly arranged on the outer surface of the adjusting ring; a fixing plate is arranged at the end, away from the adjusting ring, of the push rod. According to the agricultural planting frame, when a movable gear needs to rotate, a driving rod drives a transmission gear to be meshed with the movable gear, then the movable gear is driven to rotate, and then a clamping block arranged at the upper end of the movable gear is synchronously driven to rotate; the angle of the reflector is adjusted in cooperation with the adjusting block, and then the angle of the reflector is adjusted in real time according to actual conditions so that the reflector can conform to different scenes.

Description

Technical Field

[0001] The invention relates to agricultural planting technology, in particular to an agricultural planting frame. Background Art

[0002] Planting is a major component of agriculture. It is a sector of social production that utilizes the vital functions of plants to produce food, supplementary foods, feed, and industrial raw materials through artificial cultivation. It encompasses the cultivation of various crops, trees, fruit trees, medicinal and ornamental plants. These include food crops, cash crops, vegetable crops, green manure crops, feed crops, forage, flowers, and other horticultural crops. In China, it typically refers to the production of crops such as grain, cotton, oilseed oil, sugar, hemp, silk, tobacco, tea, fruit, medicinal herbs, and miscellaneous crops. It also refers to agriculture in a narrow sense, also known as crop cultivation. It generally refers to the agricultural production sector that cultivates crops to produce plant-based products. In China, planting is combined with forestry, animal husbandry, sideline industries, and fisheries to form the broad definition of agriculture. Abroad, planting is generally combined with animal husbandry to form the collective term "agriculture."

[0003] The Chinese invention patent with publication number CN115943826A discloses an agricultural planting rack. To facilitate the planting of vine agricultural plants, the staff first plants the vine agricultural plants in a planting trough and then waters them to replenish water and nutrients for their roots. Then, the staff waters the vine agricultural plants in a water replenishment component. When the soil of the vine agricultural plants in the planting trough is depleted of water, the water replenishment component automatically replenishes water inside the trough, thereby ensuring that the vine agricultural plants have sufficient water during their growth process and avoiding the need for staff to water them regularly. The staff can adjust the angle of the refractive component to refract light onto the vine agricultural plants under the action of the refractive component, thereby enhancing the lighting during the growth process and promoting the growth efficiency of the vine agricultural plants.

[0004] When existing equipment is in use, since sunlight changes over time, this phenomenon may require staff to adjust the position of the planting rack to meet the daily lighting effects of vines. However, the light angle slowly changes over time, resulting in the need to constantly adjust the entire planting rack, which in turn consumes a lot of labor. Therefore, an agricultural planting rack has been developed. Summary of the Invention

[0005] The purpose of the present invention is to provide an agricultural planting rack to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned object, the present invention provides the following technical solution: an agricultural planting rack, comprising a base, wherein support columns are symmetrically arranged on the upper end of the base, a rotating shaft is provided between two of the support columns, an adjusting ring is slidably mounted on the outer surface of the rotating shaft, a plurality of push rods are evenly arranged on the outer surface of the adjusting ring, a fixing plate is provided at one end of the push rod away from the adjusting ring, and positioning blocks are provided at both ends of the fixing plate, and a supporting plate is rotatably mounted on the end of the positioning block, and the agricultural plants are lifted by the supporting plate; A positioning assembly is assembled on the upper end of the base, and the positioning assembly is evenly arranged on the upper end of the base; An adjustment component is assembled on the upper end of the positioning component, is limited by the positioning component, and cooperates with the adjustment component to adjust the angle of the light so that it shines on the agricultural plants for photosynthesis; The adjustment assembly includes a protective plate, an inner wall of the protective plate is provided with a driving member, an output end of the driving member is provided with a turntable, and a movable rod is rotatably installed at the end of the turntable near the edge; A movable plate is rotatably mounted on one end of the movable rod away from the turntable, a movable groove is formed at the end of the movable plate, and a driving rod is slidably mounted on the inner wall of the movable groove, and the end of the driving rod passes through and extends to the outside of the protective plate; The outer surface of the driving rod is provided with an adjustment block, the inner wall of the adjustment block is provided with a telescopic rod, the output end of the telescopic rod is provided with a transmission gear, and the end of the transmission gear is slidably connected to the outer surface of the driving rod; A movable gear is rotatably installed on the inner wall of the adjustment block, and the outer surface of the movable gear is engaged with the outer surface of the transmission gear. At the same time, the upper end of the movable gear passes through and extends to the upper end of the adjustment block. A clamping block is provided at the upper end of the movable gear, and a reflective plate is provided at the upper end of the clamping block, through which light is reflected onto the plants on the backlit side.

[0007] As a further optimization solution of the present invention, a docking block is provided at the lower end of the protective plate.

[0008] As a further optimized solution of the present invention, the positioning assembly includes a limiting block connected to the base, and a power piece is provided at the upper end of the limiting block.

[0009] As a further optimization solution of the present invention, a pressing rod is provided at the output end of the power member, the upper end of the pressing rod is in contact with the inner wall of the docking block, and a positioning plate is provided on the outer surface of the pressing rod.

[0010] As a further optimization solution of the present invention, a plurality of groups of guide blocks are provided on the upper end of the positioning plate, and the plurality of groups of guide blocks are evenly distributed on the upper end of the positioning plate.

[0011] As a further optimization solution of the present invention, an extrusion block is slidably mounted on the upper end of the guide block, the cross section of the extrusion block is L-shaped, and the upper end of the extrusion block is in contact with the outer surface of the docking block.

[0012] As a further optimization solution of the present invention, a connecting block is provided at the lower end of the extrusion block, and an extension rod is rotatably mounted at the lower end of the connecting block.

[0013] As a further optimized solution of the present invention, the lower end of the extension rod is rotatably connected to the upper end of the limiting block.

[0014] As a further optimization solution of the present invention, an elastic member is sleeved on the outer surface of the pressing rod, and the upper end of the elastic member is connected to the positioning plate, and the lower end of the elastic member is connected to the end of the power member.

[0015] As a further optimization solution of the present invention, the cross section of the pressing rod is higher than the cross section of the extrusion block, and the pressing rod is located in the middle of the positioning plate.

[0016] Compared with the prior art, the agricultural planting rack provided by the present invention has the following beneficial effects: when the movable gear needs to rotate, the driving rod drives the transmission gear to engage with the movable gear, thereby driving the movable gear to rotate, and then synchronously drives the clamping block set at the upper end of the movable gear to rotate. Since the end of the clamping block is provided with a reflector for rotation, the angle of the reflector is adjusted in conjunction with the adjustment block, and then the angle of the reflector is adjusted in real time according to the actual situation to make it suitable for different scenes.

[0017] Since the two ends of the extension rod are rotatably connected to the ends of the connecting block and the limiting block respectively, when the positioning plate moves, the extension rod pulls the extrusion block, so that the extrusion block moves on the guide block. When the positioning plate moves upward, the extrusion block is driven to move closer to the middle, thereby fixing the adjustment assembly. When the positioning plate moves downward, the extrusion block is driven to expand outward, so that the adjustment assembly is separated from the extrusion block. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1A schematic diagram of the overall structure provided by an embodiment of the present invention; Figure 2 A cross-sectional view of the overall internal structure provided by an embodiment of the present invention; Figure 3 A schematic diagram of the positioning component structure provided by an embodiment of the present invention; Figure 4 A first cross-sectional view of the internal structure of a positioning assembly provided by an embodiment of the present invention; Figure 5 A second cross-sectional view of the internal structure of the positioning assembly provided by an embodiment of the present invention; Figure 6 A first schematic diagram of the structure of the regulating component provided in an embodiment of the present invention; Figure 7 A second schematic diagram of the structure of the regulating component provided in an embodiment of the present invention; Figure 8 A first cross-sectional view of the internal structure of the adjustment assembly provided in an embodiment of the present invention; Figure 9 This is a second cross-sectional view of the internal structure of the adjustment assembly provided in an embodiment of the present invention.

[0020] Description of reference numerals: 1. Base; 2. Positioning assembly; 3. Adjustment assembly; 11. Support column; 12. Rotating shaft; 13. Adjustment ring; 14. Push rod; 15. Fixed plate; 16. Positioning block; 17. Support plate; 21. Limiting block; 22. Power member; 23. Press rod; 231. Elastic member; 24. Positioning plate; 25. Guide block; 26. Extrusion block; 27. Connecting block; 28. Extension rod; 31. Protective plate; 311. Docking block; 32. Driving member; 33. Turntable; 34. Movable rod; 35. Movable plate; 351. Movable slot; 36. Driving rod; 37. Adjustment block; 371. Transmission gear; 372. Telescopic rod; 38. Movable gear; 381. Clamping block; 39. Reflector. DETAILED DESCRIPTION

[0021] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrally connected; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through an intermediate medium, or they can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Example: See Figures 1-9 An agricultural planting rack includes a base 1, and support columns 11 are symmetrically arranged on the upper end of the base 1. A rotating shaft 12 is arranged between the two support columns 11. An adjusting ring 13 is slidably installed on the outer surface of the rotating shaft 12. A plurality of push rods 14 are evenly arranged on the outer surface of the adjusting ring 13. A fixing plate 15 is provided at the end of the push rod 14 away from the adjusting ring 13. At the same time, positioning blocks 16 are provided at both ends of the fixing plate 15. A supporting plate 17 is rotatably installed on the end of the positioning block 16, and the agricultural plants are lifted by the supporting plate 17.

[0024] In this solution, a motor or other device with power output is provided at the end of the support column 11, and the output end of the motor is connected to the end of the rotating shaft 12, wherein the supporting column 11 supports the rotating shaft 12 so that the rotating shaft 12 is in a stable state as a whole. At the same time, the inner cavity of the rotating shaft 12 is provided with an electric telescopic rod or other device with telescopic function, and is connected to an external control device. The electric telescopic rod drives the adjustment ring 13 to move, and cooperates with the rotation of the push rod 14 installed on the adjustment ring 13 to drive the fixed plate 15 to expand outward or contract toward the middle, thereby adjusting the distance between the two plants so that they can better contact with light.

[0025] At the same time, the support plate 17 is limited by the positioning block 16, and when the rotating shaft 12 rotates, the support plate 17 rotates around the positioning block 16, thereby ensuring that the plants placed on the support plate 17 remain stable.

[0026] Furthermore, the adjustment component 3 is assembled on the upper end of the positioning component 2, and the positioning component 2 is used to limit the adjustment component 3, and cooperates with the adjustment component 3 to adjust the angle of the light so that it shines on the agricultural plants for photosynthesis; wherein, the adjustment component 3 includes a protective plate 31, the inner wall of the protective plate 31 is provided with a driving member 32, the output end of the driving member 32 is provided with a turntable 33, and a movable rod 34 is rotatably installed at the end of the turntable 33 and near the edge part.

[0027] In this embodiment, the driving member 32 is a device with power output such as a motor, and is connected to an external control device. At the same time, when the driving member 32 is started, it synchronously drives the turntable 33 arranged at its output end to rotate. Since the movable rod 34 is rotatably installed near the edge of the turntable 33, when the turntable 33 rotates, the movable rod 34 is driven to rotate around the center of the turntable 33.

[0028] Furthermore, a movable plate 35 is rotatably installed at one end of the movable rod 34 away from the turntable 33, and a movable groove 351 is opened at the end of the movable plate 35. At the same time, a driving rod 36 is slidably installed on the inner wall of the movable groove 351, and the end of the driving rod 36 passes through and extends to the outside of the protective plate 31.

[0029] Specifically, when the movable rod 34 rotates, the movable plate 35 provided at the end of the movable rod 34 is synchronously driven to move, wherein the movable groove 351 provided on the movable plate 35 is slidingly connected to the outer surface of the driving rod 36, and the end of the outer surface of the driving rod 36 is rectangular, so that the outer surface of the driving rod 36 fits into the inner wall of the movable groove 351, so that when the movable plate 35 moves following the movable rod 34, it drives the driving rod 36 to rotate.

[0030] The driving rod 36 is limited by the movable groove 351 so that the movable plate 35 will not be disturbed when moving, thereby ensuring the normal operation of the driving rod 36.

[0031] Furthermore, an adjustment block 37 is provided on the outer surface of the driving rod 36 , a telescopic rod 372 is provided on the inner wall of the adjustment block 37 , a transmission gear 371 is provided on the output end of the telescopic rod 372 , and the end of the transmission gear 371 is slidably connected to the outer surface of the driving rod 36 .

[0032] Specifically, when the driving rod 36 rotates, the adjustment block 37 arranged on the outer surface of the driving rod 36 is synchronously driven to rotate, wherein the telescopic rod 372 is a component with a telescopic function such as an electric telescopic rod, and is connected to an external control device. At the same time, when the telescopic rod 372 is started, the transmission gear 371 arranged at the output end of the telescopic rod 372 is driven to move, and the output end of the telescopic rod 372 is rotatably connected to the end of the transmission gear 371.

[0033] The end of the driving rod 36 close to the transmission gear 371 is rectangular, so that when the driving rod 36 rotates, the transmission gear 371 slidably mounted on its outer surface is synchronously driven to rotate, and the position of the transmission gear 371 can be adjusted by the telescopic rod 372, thereby achieving engagement or disengagement with the movable gear 38, making it suitable for different scenarios.

[0034] Furthermore, a movable gear 38 is rotatably mounted on the inner wall of the adjustment block 37. The outer surface of the movable gear 38 meshes with the outer surface of the transmission gear 371. The upper end of the movable gear 38 extends through and to the upper end of the adjustment block 37. A clamping block 381 is provided at the upper end of the movable gear 38, and a reflector 39 is provided at the upper end of the clamping block 381. The reflector 39 reflects light onto the plants on the backlit side. A docking block 311 is provided at the lower end of the protective plate 31.

[0035] Specifically, when the movable gear 38 needs to rotate, the driving rod 36 drives the transmission gear 371 to engage with the movable gear 38, thereby driving the movable gear 38 to rotate, and then synchronously driving the clamping block 381 set at the upper end of the movable gear 38 to rotate. Since the end of the clamping block 381 is provided with a reflector 39 for rotation, the angle of the reflector 39 is adjusted in conjunction with the adjustment block 37, and then the angle of the reflector 39 is adjusted in real time according to the actual situation to make it suitable for different scenes.

[0036] The connection between the clamping block 381 and the reflector 39 is provided with a fixing component such as a clamp, and when assembling the reflector 39, the inclination angle of the reflector 39 is adjusted first so that the light is always irradiated on the plants on the backlight side during subsequent adjustments.

[0037] Furthermore, the positioning assembly 2 is assembled on the upper end of the base 1 and is evenly arranged on the upper end of the base 1. The positioning assembly 2 includes a limiting block 21 connected to the base 1, and a power member 22 is provided on the upper end of the limiting block 21. The output end of the power member 22 is provided with a pressing rod 23, the upper end of which is in contact with the inner wall of the docking block 311, and the outer surface of the pressing rod 23 is provided with a positioning plate 24.

[0038] In this embodiment, the power part 22 is a device with telescopic function such as an electric telescopic rod, and is connected to an external control device. When the power part 22 is started, it synchronously drives the pressing rod 23 set at its output end to move up and down, and drives the positioning plate 24 set on the outer surface of the pressing rod 23 to move.

[0039] The inner wall of the docking block 311 mates with the outer surface of the upper end of the pressing rod 23, thereby ensuring that the adjustment assembly 3 is initially fixed when placed on the positioning assembly 2, thereby ensuring stability during subsequent operation. At the same time, the inner cavity of the base 1 is equipped with a telescopic device, such as a telescopic member, whose end is connected to the lower end of the positioning assembly 2. When needed, the telescopic member pushes the positioning assembly 2 to the outer surface of the base 1. When not in use, the telescopic member retracts the positioning assembly 2 into the inner cavity of the base 1, ensuring overall aesthetics.

[0040] Furthermore, the upper end of the positioning plate 24 is provided with multiple sets of guide blocks 25, and the multiple sets of guide blocks 25 are evenly distributed on the upper end of the positioning plate 24. The upper end of the guide block 25 is slidably mounted with an extrusion block 26, which has an L-shaped cross section, and the upper end of the extrusion block 26 is in contact with the outer surface of the docking block 311.

[0041] Specifically, when the positioning plate 24 moves, the guide block 25 arranged at its end is synchronously driven to move. Since the cross-section of the extrusion block 26 is L-shaped, when the extrusion block 26 moves toward the middle, the outer surface of the docking block 311 can be limited, thereby fixing the entire adjustment component 3 to ensure stability during operation.

[0042] Furthermore, a connecting block 27 is provided at the lower end of the extrusion block 26 , and an extension rod 28 is rotatably mounted on the lower end of the connecting block 27 . The lower end of the extension rod 28 is rotatably connected to the upper end of the limiting block 21 .

[0043] Specifically, since the two ends of the extension rod 28 are rotatably connected to the ends of the connecting block 27 and the limiting block 21 respectively, when the positioning plate 24 moves, the extension rod 28 pulls the extrusion block 26, so that the extrusion block 26 moves on the guide block 25. When the positioning plate 24 moves upward, the extrusion block 26 is driven to move toward the middle, thereby fixing the adjustment component 3. When the positioning plate 24 moves downward, the extrusion block 26 is driven to expand outward, so that the adjustment component 3 is separated from the extrusion block 26.

[0044] Furthermore, an elastic member 231 is sleeved on the outer surface of the pressing rod 23 , and the upper end of the elastic member 231 is connected to the positioning plate 24 , and the lower end of the elastic member 231 is connected to the end of the power member 22 .

[0045] Specifically, the elastic member 231 is an elastic component such as a spring, and the positioning plate 24 is supported by the elastic member 231 so that after the positioning plate 24 finishes moving, the elastic member 231 assists in restoring the positioning plate 24 to its initial position.

[0046] Furthermore, the cross section of the pressing rod 23 is higher than the cross section of the extrusion block 26 , and the pressing rod 23 is located in the middle of the positioning plate 24 .

[0047] Specifically, the adjusting assembly 3 is preliminarily centered by pressing the rod 23 to avoid the entire adjusting assembly 3 being tilted when being fixed, which may cause subsequent collapse.

[0048] The control device can use a single-chip microcomputer as the control terminal. In this embodiment, the single-chip microcomputer is a typical embedded microcontroller (MCU), consisting of an arithmetic unit, a controller, memory, and input / output devices, equivalent to a miniature computer. Compared to the general-purpose microprocessors used in personal computers, it emphasizes self-sufficiency (no external hardware required) and cost savings. Its greatest advantages are its small size, allowing it to be placed inside the instrument, low memory capacity, simple input / output interfaces, and low functional consumption.

[0049] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. An agricultural planting rack, characterized in that: The invention comprises a base (1), wherein support columns (11) are symmetrically arranged at the upper end of the base (1), a rotating shaft (12) is arranged between two of the supporting columns (11), an adjusting ring (13) is slidably mounted on the outer surface of the rotating shaft (12), a plurality of push rods (14) are evenly arranged on the outer surface of the adjusting ring (13), a fixing plate (15) is arranged at one end of the push rod (14) away from the adjusting ring (13), and positioning blocks (16) are arranged at both ends of the fixing plate (15), and a supporting plate (17) is rotatably mounted on the end of the positioning block (16), and the agricultural plant is lifted by the supporting plate (17); A positioning component (2) is assembled on the upper end of the base (1), and the positioning component (2) is evenly arranged on the upper end of the base (1); an adjusting component (3) mounted on the upper end of the positioning component (2), the adjusting component (3) being limited by the positioning component (2) and cooperating with the adjusting component (3) to adjust the angle of the light so that the light is irradiated on the agricultural plants for photosynthesis; The adjustment assembly (3) comprises a protective plate (31), the inner wall of the protective plate (31) is provided with a driving member (32), the output end of the driving member (32) is provided with a rotating disk (33), and a movable rod (34) is rotatably mounted at the end of the rotating disk (33) and close to the edge thereof; A movable plate (35) is rotatably mounted on one end of the movable rod (34) away from the rotating disk (33); a movable groove (351) is formed at the end of the movable plate (35); a driving rod (36) is slidably mounted on the inner wall of the movable groove (351); and an end of the driving rod (36) penetrates and extends to the outside of the protective plate (31); An adjustment block (37) is provided on the outer surface of the driving rod (36), a telescopic rod (372) is provided on the inner wall of the adjustment block (37), a transmission gear (371) is provided at the output end of the telescopic rod (372), and an end of the transmission gear (371) is slidably connected to the outer surface of the driving rod (36); A movable gear (38) is rotatably mounted on the inner wall of the adjustment block (37); the outer surface of the movable gear (38) meshes with the outer surface of the transmission gear (371); the upper end of the movable gear (38) penetrates and extends to the upper end of the adjustment block (37); a clamping block (381) is provided at the upper end of the movable gear (38); and a reflector (39) is provided at the upper end of the clamping block (381); the reflector (39) reflects light onto the plant on the backlit surface.

2. An agricultural planting rack according to claim 1, characterized in that: A docking block (311) is provided at the lower end of the protective plate (31).

3. An agricultural planting rack according to claim 2, characterized in that: The positioning assembly (2) comprises a limiting block (21) connected to the base (1), and a power piece (22) is provided at the upper end of the limiting block (21).

4. The agricultural planting rack according to claim 3, characterized in that: A pressing rod (23) is provided at the output end of the power member (22), the upper end of the pressing rod (23) is in contact with the inner wall of the docking block (311), and a positioning plate (24) is provided on the outer surface of the pressing rod (23).

5. The agricultural planting rack according to claim 4, characterized in that: A plurality of groups of guide blocks (25) are arranged at the upper end of the positioning plate (24), and the plurality of groups of guide blocks (25) are evenly distributed at the upper end of the positioning plate (24).

6. The agricultural planting rack according to claim 5, characterized in that: An extrusion block (26) is slidably mounted on the upper end of the guide block (25); the cross section of the extrusion block (26) is L-shaped, and the upper end of the extrusion block (26) is in contact with the outer surface of the docking block (311).

7. The agricultural planting rack according to claim 6, characterized in that: A connecting block (27) is provided at the lower end of the extrusion block (26), and an extension rod (28) is rotatably mounted at the lower end of the connecting block (27).

8. The agricultural planting rack according to claim 7, characterized in that: The lower end of the extension rod (28) is rotatably connected to the upper end of the limiting block (21).

9. The agricultural planting rack according to claim 8, characterized in that: An elastic member (231) is sleeved on the outer surface of the pressing rod (23), and the upper end of the elastic member (231) is connected to the positioning plate (24), and the lower end of the elastic member (231) is connected to the end of the power member (22).

10. The agricultural planting rack according to claim 9, characterized in that: The cross section of the pressing rod (23) is higher than the cross section of the extrusion block (26), and the pressing rod (23) is located in the middle of the positioning plate (24).

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