A rotary automatic rubber tapping machine and a rubber tapping method

Abstract

This invention discloses a rotary automatic rubber tapping machine and a tapping method, including a cutting mechanism, a lifting mechanism, and a frame. The frame is fixed relative to the rubber tree. The lifting mechanism is mounted on the frame, and the cutting mechanism is mounted on the lifting mechanism. The cutting mechanism includes a motor and a tapping blade. The motor drives the tapping blade to rotate around a central axis that coincides with the radial direction of the rubber tree. The tapping blade includes mutually perpendicular horizontal and vertical blades. The horizontal blade is used to rotary cut the bark, and the vertical blade is used to cut the bark surface that is longitudinally connected to the trunk. This invention provides a rotary automatic rubber tapping machine and a tapping method that are simple in structure, highly efficient, and stable.

Description

Technical Field

[0001] This invention relates to the field of rubber tapping technology, and in particular to a rotary automatic rubber tapping machine and a rubber tapping method. Background Technology

[0002] Rubber tapping involves cutting the outer bark and bast bark of a rubber tree to allow latex (lacquer) to flow out and be collected in a rubber bowl. Each tapping requires cutting a certain thickness of bark downwards from the original tapping position. Therefore, existing rubber tapping machines generally use a drive mechanism to move the tapping blade up and down and reciprocate. For example, Chinese invention patent CN114402947A: Intelligent Binding Tree-Following Automatic Rubber Tapping Machine and its Usage Method, and Chinese utility model patent CN209283910U: An Automatic Rubber Tapping Machine. During tapping, the tapping blade needs to be driven to reset along the original direction before moving downwards to cut the next cut. Existing rubber tapping machines have complex structures, low tapping efficiency, and poor stability. Summary of the Invention

[0003] In view of the above-mentioned prior art, the present invention provides a rotary automatic rubber tapping machine and a rubber tapping method, which has a simple structure, high rubber tapping efficiency and strong stability.

[0004] To achieve the above objectives, the technical solution of this invention is implemented as follows:

[0005] An automatic rotary tapping machine includes a cutting mechanism, a lifting mechanism, and a frame. The frame is fixed relative to a rubber tree. The lifting mechanism is mounted on the frame, and the cutting mechanism is mounted on the lifting mechanism. The cutting mechanism includes a motor and a tapping blade. The motor drives the tapping blade to rotate around a central axis that coincides with the radial direction of the rubber tree. The tapping blade includes a horizontal blade and a vertical blade that are perpendicular to each other. The horizontal blade is used to rotate and cut the bark, and the vertical blade is used to cut the bark surface that is longitudinally connected to the trunk.

[0006] Furthermore, the lifting mechanism includes a lead screw, a nut, a guide column, and a lifting base plate. The guide column is fixedly connected to the frame, and the lifting base plate is slidably connected to the guide column. The nut is provided on the lifting base plate and is connected to the motor via a gear set. The nut is threadedly engaged with the lead screw, and the lead screw is fixedly connected to the frame.

[0007] Furthermore, the gear set includes a sector tooth, a driven gear, a first bevel gear, and a second bevel gear. The sector tooth is connected to the output shaft of the motor and meshes with the driven gear. The driven gear is connected to the first bevel gear, the first bevel gear meshes with the second bevel gear, and the second bevel gear is connected to the nut.

[0008] Furthermore, the driven gear and the first bevel gear are fixed on the rotating shaft, which is mounted on the motor mounting plate via bearings; the lifting base plate is provided with two sets of linear bearings, which are used to pass through the guide column.

[0009] Furthermore, the motor is signal-connected to the control system, which is used to control the rotation of the motor. The control system includes a start switch, a micro-switch normally closed switch, and a toggle shaft. The start switch is electrically connected to the motor and is connected in parallel with the micro-switch normally closed switch. The toggle shaft rotates with the output shaft of the motor, and when the toggle shaft rotates, it pushes the micro-switch normally closed switch.

[0010] Furthermore, the frame includes an upper fixed plate, a lower fixed plate, a bracket, a top rod, a screw, and a binding strap. The upper fixed plate and the lower fixed plate are fixedly connected by the bracket. The lower fixed plate has top rods on both sides for supporting the rubber tree. The upper fixed plate has the screw. The binding strap is connected to the bracket on both sides.

[0011] Furthermore, the frame also includes a V-shaped clamp, which is rotatably connected to the screw, and the side of the V-shaped clamp facing the rubber tree is provided with an anti-slip structure.

[0012] Furthermore, the strap is elastic, the bracket is provided with a fixing ring, and the strap is connected to the fixing ring.

[0013] A rotary tapping method includes: cutting a vertically oriented guide groove on a rubber tree, and cutting a circular tapping hole at the top of the guide groove; driving a tapping blade to rotate around a rotation axis and using the tapping blade to cut the lower edge of the tapping hole; and setting an acetylene torch device to stimulate latex production within the effective area of ​​the rubber tree cut surface.

[0014] The beneficial effects of this invention are as follows: After the rubber tree is cut, latex is produced. Then, a guide groove is manually cut into the bottom of the rubber tree bark at the cut surface. The latex produced by the rubber tree flows downwards into the latex bowl from the guide groove, completing the latex collection. This invention utilizes the rotation of the vertical and horizontal blades to cut off the bark from the rubber tree, greatly accelerating the tapping speed. The cut surface is symmetrical, making the equipment operate more smoothly and with higher performance. It features a compact size, lightweight and simplified structure, low cost, and high efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a rotary automatic rubber tapping machine and a rubber tapping method according to an embodiment of this application;

[0016] Figure 2 This is a schematic diagram of the cutting mechanism and lifting mechanism in the embodiments of this application;

[0017] Figure 3 This is a schematic diagram of the cutting mechanism and lifting mechanism in the embodiments of this application;

[0018] Figure 4 This is a schematic diagram of the structure of a rotary automatic rubber tapping machine and a rubber tapping method according to an embodiment of this application;

[0019] Figure 5 This is a schematic diagram illustrating the usage state of a rotary automatic rubber tapping machine and a rubber tapping method according to an embodiment of this application;

[0020] Explanation of icon numbers:

[0021] 1. Cutting mechanism, 2. Lifting mechanism, 3. Frame, 4. Motor, 5. Rubber cutting blade, 6. Horizontal blade, 7. Vertical blade, 8. Lead screw, 9. Nut, 10. Guide column, 11. Lifting base plate, 12. Sector gear, 13. Driven gear, 14. First bevel gear, 15. Second bevel gear, 16. Rotating shaft, 17. Bearing, 18. Motor fixing plate, 19. Linear bearing, 20. Start switch, 21. Micro-motion normally closed switch, 22. Toggle shaft, 23. Upper fixing plate, 24. Lower fixing plate, 25. Bracket, 26. Top rod, 27. Screw, 28. Binding strap, 29. V-clamp, 30. Fixing ring. Detailed Implementation

[0022] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. In the following description, the expression "some embodiments" refers to a subset of all possible embodiments; however, it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0023] It should also be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0024] Example 1

[0025] See attached document Figures 1 to 5This application provides a rotary automatic rubber tapping machine, including a cutting mechanism 1, a lifting mechanism 2, and a frame 3. The frame 3 is fixed relative to the rubber tree. The frame 3 can be fixed to the rubber tree, or a fixed column can be set next to the rubber tree, and then the frame 3 is fixed to the column, so that the position of the frame 3 and the rubber tree is relatively fixed. The lifting mechanism 2 is provided on the frame 3, and the cutting mechanism 1 is provided on the lifting mechanism 2. The lifting mechanism 2 is used to drive the cutting mechanism 1 to move up and down. The cutting mechanism 1 and the lifting mechanism 2 can be driven by different motors 4, or they can move under the drive of the same motor 4. The lifting mechanism 2 is... The cutting mechanism 1 is driven to move up and down, such as a lead screw nut 9, a telescopic cylinder, or an electric telescopic rod. The cutting mechanism 1 includes a motor 4 and a tapping blade 5. The motor 4 drives the tapping blade 5 to rotate around a central axis that coincides radially with the rubber tree. The tapping blade 5 includes mutually perpendicular transverse blades 6 and vertical blades 7. The transverse blade 6 is used to rotate and cut the bark, and the vertical blade 7 is used to cut the bark surface that connects longitudinally to the tree trunk. As the tapping blade 5 rotates, the transverse blade 6 cuts off the bark, and the vertical blade 7 cuts off the bark surface that connects longitudinally to the tree trunk, thus creating a circular cut surface with a diameter of approximately 20-50 mm on the rubber tree. After cutting, the rubber tree produces latex. Then, a guide groove is manually cut into the rubber bark at the bottom of the cut surface. The latex produced by the rubber tree flows downwards into the latex bowl from the guide groove, completing the latex collection. This invention utilizes the rotation of the vertical blade 7 and the transverse blade 6 to cut off the bark on the rubber tree, greatly accelerating the tapping speed. The cut tapping surface is symmetrical, making the equipment run more smoothly and with higher performance. It features a compact size, lightweight and simplified structure, low cost, and high efficiency.

[0026] Preferably, the lifting mechanism 2 includes a lead screw 8, a nut 9, a guide column 10, and a lifting base plate 11. The guide column 10 is fixedly connected to the frame 3, and the lifting base plate 11 is slidably connected to the guide column 10. The nut 9 is provided on the lifting base plate 11, and the nut 9 is connected to the motor 4 via a gear set. The nut 9 is threadedly engaged with the lead screw 8, and the lead screw 8 is fixedly connected to the frame 3. When the motor 4 rotates, it drives the nut 9 to rotate via the gear set. Since the nut 9 is threadedly engaged with the lead screw 8, the nut 9 and the lead screw 8 form a lead screw structure. The rotation of the nut 9 causes the lifting base plate 11 to move downwards along the guide column 10 by a preset distance, preferably 2mm. The guide column improves the stability of the lifting plate's lifting and ensures stable lifting of the cutting mechanism 1. Preferably, the motor 4 is a geared motor 4, and the geared motor 4 has output shafts at both ends.

[0027] Specifically, the gear set includes a sector tooth 12, a driven gear 13, a first bevel gear 14, and a second bevel gear 15. The sector tooth 12 is connected to the output shaft of the motor 4, meshes with the driven gear 13, the driven gear 13 is connected to the first bevel gear 14, the first bevel gear 14 meshes with the second bevel gear 15, and the second bevel gear 15 is connected to the nut 9. When the output shaft of the motor 4 rotates, it drives the sector tooth 12 to rotate. The sector tooth 12 intermittently meshes with the driven gear 13, so that when the motor 4 rotates continuously, it can intermittently drive the nut 9 to rotate. The motor 4 that drives the lifting mechanism 2 and the motor 4 of the cutting mechanism 1 are the same motor 4. When the rubber cutting blade 5 of the cutting mechanism 1 rotates to the position for cutting rubber tree bark, the sector tooth 12 does not mesh with the driven gear 13. At this time, the cutting mechanism 1 is fixed at a certain height for rubber cutting. When the tapping blade 5 rotates to the position where it detaches from the rubber tree bark, the sector tooth 12 meshes with the driven gear 13. At this time, the sector tooth 12 drives the nut 9 to rotate, causing the cutting mechanism 1 to move downwards by 2mm. This invention can automatically cut the bark along an arc-shaped cutting surface trajectory and move longitudinally to the next cutting surface, thus automating continuous tapping operations. This invention achieves multiple tapping actions through simple gear transmission, and features a compact size, lightweight and simplified structure, low cost, and high efficiency.

[0028] Specifically, the driven gear 13 and the first bevel gear 14 are fixed on the rotating shaft 16. When the driven gear 13 rotates, it drives the first bevel gear 14 to rotate synchronously. The rotating shaft 16 is mounted on the motor fixing plate 18 through the bearing 17 to facilitate the rotation of the rotating shaft 16. The lifting base plate 11 is provided with two sets of linear bearings 19. The linear bearings 19 are used to pass through the guide column 10 to reduce the friction of movement and improve the stability of movement.

[0029] Specifically, the motor 4 is signal-connected to the control system, which controls the rotation of the motor 4, driving the cutting blade to rotate one revolution. Optionally, the control system includes a start switch 20, a micro-switch normally closed 21, and a toggle shaft 22. The start switch 20 is electrically connected to the motor 4. The start switch 20 is briefly closed and then opened. When the start switch is closed, the motor 4 rotates. The toggle shaft 22 rotates with the output shaft of the motor 4. For example, the toggle shaft 22 is mounted on the sector tooth 12. When the motor 4 rotates, the toggle shaft 22 rotates accordingly. When the toggle shaft 22 rotates, it pushes the micro-switch normally closed 21. The micro-switch normally closed 21 is briefly opened when pushed, but after the toggle shaft 22 passes the micro-switch normally closed 21, the micro-switch normally closed 21 quickly closes again. Since the start switch 20 and the micro-switch normally closed 21 are connected in parallel, the motor 4 continues to rotate at this time. When motor 4 rotates to the point where the toggle shaft 22 triggers the micro switch 21, the micro switch 21 opens again. At this time, the start switch 20 is open, and motor 4 rotates exactly one revolution and stops. It waits for the start switch 20 to briefly close again before motor 4 starts rotating again. Optionally, the start switch 20 can be manually controlled or controlled by a controller.

[0030] Specifically, the frame 3 includes an upper fixing plate 23, a lower fixing plate 24, a bracket 25, a top rod 26, a screw 27, and a binding strap 28. The upper fixing plate 23 and the lower fixing plate 24 are fixedly connected by the bracket 25. The upper and lower ends of the bracket 25 are respectively connected to the upper fixing plate 23 and the lower fixing plate 24 to improve the stability of the fixing rod. The lower fixing plate 24 has top rods 26 on both sides for supporting the rubber tree. The top rods 26 support the rubber tree. The upper fixing plate 23 has the screw 27. The top rods 26 and the screw 27 form a three-point support structure, which can form a stable support structure even when the tree trunk is uneven. During the installation process, repeated adjustments are not required, making the installation faster and more convenient, and facilitating the installation, positioning, and debugging of the equipment. The binding strap 28 is connected to the bracket 25 on both sides. After supporting the rubber tree trunk, the frame 3 is fixed by the binding strap 28. This invention uses a single elastic binding strap 28, whose elasticity provides the tree with a certain growth space while reducing damage to the tree trunk. Other existing fixed rubber tapping machines typically use two sets of clamps, one above and one below, to secure the equipment. However, tests have shown that as the tree grows and its circumference increases, the clamps exert significant pressure on the tree, causing a depression in the bark and hindering its growth. This invention can effectively solve the aforementioned technical problems.

[0031] Specifically, the frame 3 also includes a V-shaped clamp 29, which is rotatably connected to the screw 27. The V-shaped clamp 29 has an anti-slip structure on the side facing the rubber tree. The upper support point of the frame 3 uses a wavy V-shaped clamp to fit against the tree trunk, preventing the equipment from slipping during operation. The V-shaped clamp 29 is connected to the frame 3 via the screw 27, whose extension length is adjustable. The lower end of the frame 3 uses two top rods 26 with rounded front ends to fit against the tree trunk, reducing pressure damage to the trunk and avoiding the latex guide line, making the operation more efficient and smooth. Preferably, the two top rods 26 of the present invention are connected to the frame 3 via threaded surfaces, and their extension length can be adjusted according to the shape of the tree trunk and the distance from the tree surface. By adjusting the extension length of the screw 27 and the top rods 26, the distance between the equipment and the tree trunk can be adjusted, as well as the cutting depth and the tilt of the vertical movement, making the tapping depth more precise, avoiding deep tapping that damages the tree or shallow tapping that results in no latex, and ensuring output.

[0032] Specifically, the binding strap 28 is elastic, and the bracket 25 is provided with a fixing ring 30, with the binding strap 28 connected to the fixing ring 30. The elastic binding strap 28 provides the tree with a certain growth space while reducing damage to the trunk and facilitating fixation.

[0033] A rotary tapping method includes cutting vertically oriented guide grooves into a rubber tree, with a circular tapping hole cut at the top of the guide grooves; driving a tapping blade to rotate around a rotation axis, using the tapping blade to cut the lower edge of the tapping hole; the guide grooves are used to guide latex flow, and a collection bowl is placed at the bottom of the guide grooves to collect the latex. First, a circular tapping hole is cut at the top of the guide grooves; then, during subsequent tapping, the tapping blade continues to cut at the bottom of the tapping hole, cutting away the rubber skin at the lower edge of the tapping hole. The latex flowing from the lower edge of the rubber skin flows into the guide grooves under gravity. An ethylene gas stimulation device is placed within the effective area of ​​the rubber tree's cut surface to stimulate latex production, using ethylene gas to stimulate the rubber tree and promote latex production.

[0034] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A rotary-cutting automatic rubber tapping machine, characterized in that, The system includes a cutting mechanism, a lifting mechanism, and a frame. The frame is fixed relative to the rubber tree. The lifting mechanism is mounted on the frame, and the cutting mechanism is mounted on the lifting mechanism. The lifting mechanism drives the cutting mechanism to move up and down. The cutting mechanism includes a motor and a tapping blade. The motor drives the tapping blade to rotate around a central axis that coincides with the radial direction of the rubber tree. The tapping blade includes mutually perpendicular horizontal and vertical blades. The horizontal blade is used to rotate and cut the bark, and the vertical blade is used to cut the bark surface that connects longitudinally to the trunk, thereby cutting a circular cut surface on the rubber tree. The lifting mechanism includes a lead screw, a nut, a guide column, and a lifting base plate. The guide column is fixedly connected to the frame, and the lifting base plate slides along the guide column. The lifting base plate is equipped with a nut, which is connected to the motor via a gear set. The nut is threadedly engaged with the lead screw, which is fixedly connected to the frame. The gear set includes a sector gear, a driven gear, a first bevel gear, and a second bevel gear. The sector gear is connected to the output shaft of the motor and meshes with the driven gear. The driven gear is connected to the first bevel gear, which meshes with the second bevel gear. The second bevel gear is connected to the nut. The driven gear and the first bevel gear are fixed on a rotating shaft, which is mounted on a motor mounting plate via bearings. The lifting base plate is equipped with two sets of linear bearings, which pass through the guide column.

2. The rotary automatic rubber tapping machine according to claim 1, characterized in that, The motor is signal-connected to the control system, which is used to control the rotation of the motor. The control system includes a start switch, a micro-switch normally closed switch, and a toggle shaft. The start switch is electrically connected to the motor and is connected in parallel with the micro-switch normally closed switch. The toggle shaft rotates with the output shaft of the motor, and pushes the micro-switch normally closed switch when the toggle shaft rotates.

3. The rotary automatic rubber tapping machine according to claim 1, characterized in that, The frame includes an upper fixed plate, a lower fixed plate, a bracket, a top rod, a screw, and a binding strap. The upper fixed plate and the lower fixed plate are fixedly connected by the bracket. The lower fixed plate has top rods on both sides for supporting the rubber tree. The upper fixed plate has the screw. The binding strap is connected to the bracket on both sides.

4. The rotary automatic rubber tapping machine according to claim 3, characterized in that, The frame also includes a V-shaped clamp, which is rotatably connected to the screw, and the side of the V-shaped clamp facing the rubber tree has an anti-slip structure.

5. The rotary automatic rubber tapping machine according to claim 3, characterized in that, The strap is elastic, the bracket has a fixing ring, and the strap is connected to the fixing ring.

6. The rubber tapping method of a rotary automatic rubber tapping machine according to claim 1, characterized in that, include: Cut vertically oriented rubber guide grooves into the rubber tree, and cut circular rubber cutting holes at the top of the rubber guide grooves. The rubber tapping blade is driven to rotate around a rotation axis, and the lower edge of the tapping hole is cut using the rubber tapping blade; an acetylene puncture device is set in the effective area of ​​the rubber tree cut surface to stimulate rubber production.

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