A rubber tapping device

Abstract

The present application relates to rubber tapping equipment technical field, improve the operation fluency and stability of the prior art in rubber tapping device, reduce the device operation cost. Specifically relates to a kind of rubber tapping device, including first knife seat;Worm wheel, rotationally arranged in first knife seat;Rubber tapping knife rod, with the shaft of worm wheel fixed connection, for driving rubber tapping knife rod rotation;Rubber tapping blade, setting in rubber tapping knife rod;Worm, with worm wheel meshing;Motor, the output end of motor is connected with worm. Through the integration of motor, worm, worm wheel, rubber tapping knife rod and rubber tapping blade in device, utilize motor to drive worm rotation, so that worm further drives worm wheel to rotate, worm wheel and worm transmission connection, and under the cooperation of electronic sensing device, further provide rotating operation power for rubber tapping blade in tool-feeding, tool-exiting and resetting process, while relatively labor-savingly cutting off bark, guarantee the fluency of rubber tapping operation.

Description

Technical Field

[0001] This invention relates to the field of rubber tapping equipment technology, and in particular to a rubber tapping device. Background Technology

[0002] Rubber tapping involves cutting through the outer bark and bast bark of a rubber tree to allow latex (lacquer) to flow out and collect in a latex bowl. Existing rubber tapping machines generally employ a drive mechanism that propels a tapping blade to make spiral cuts on the rubber tree, from which latex flows out. However, in this method (see patent document CN 218680745 U), the tapping blade's entry length is often too long, requiring a pre-cut groove along the trunk to facilitate entry. Furthermore, when the tapping blade exits, it springs away from the rubber tree, sometimes failing to easily break the bark, leading to the blade getting stuck in the trunk, causing the machine to stop and impacting tapping output.

[0003] Meanwhile, the stickiness of the latex causes the cut bark to adhere to the blade, affecting the stability of the tapping operation. Summary of the Invention

[0004] The purpose of this invention is to provide a rubber tapping device that solves the problems in the prior art where the cutting length is too long, requiring pre-grooving, and the bark cannot be cut smoothly when the cutting is withdrawn.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] This invention provides a rubber tapping device, comprising:

[0007] First knife holder;

[0008] A worm gear, which is rotatably mounted on the first tool holder;

[0009] A rubber tapping blade, wherein the rubber tapping blade is fixedly connected to the shaft of the worm gear, and the worm gear is used to drive the rubber tapping blade to rotate;

[0010] A rubber tapping blade, which is mounted on the rubber tapping blade shank;

[0011] A worm gear that meshes with a worm wheel;

[0012] An electric motor, the output end of which is connected to the worm gear.

[0013] Furthermore, it also includes an elastic scraper, which is disposed on the first blade holder and is used to clean the rubber-tapping blade when it rotates back to its original position after completing one rubber-tapping operation.

[0014] Furthermore, it also includes a limiting wheel, which is rotatably connected to a pin on the rubber tapping blade fixed to the shaft of the worm gear. The limiting wheel is used to press against the rubber tree during rubber tapping operations to limit the cutting depth of the rubber tapping blade.

[0015] Furthermore, a second cutter holder is provided on the outer periphery of the first cutter holder, and an adjustable spring is provided between the first cutter holder and the second cutter holder. The adjustable spring is used to suspend and support the first cutter holder within the second cutter holder. The adjustable spring works in conjunction with the limiting wheel to realize the contour cutting function of the rubber tapping blade on the rubber tree.

[0016] Furthermore, an adjusting bolt is threaded onto the second tool holder, and the adjusting bolt abuts against the adjustable spring through a spring seat. The adjusting bolt is used to adjust the tension of the adjustable spring.

[0017] Furthermore, a first limiting baffle is provided on both sides of the first tool holder, and a second limiting baffle is provided on the second tool holder. The first limiting baffle and the second limiting baffle work together to limit the first tool holder within the second tool holder.

[0018] Furthermore, the second cutter holder is connected to the main cutter holder, and the main cutter holder drives the rubber tapping device to move up, down, left, and right to complete the rubber tapping operation.

[0019] Furthermore, the worm wheel is a circular worm wheel, which, driven by the worm, drives the rubber cutting blade fixed on the shaft of the worm wheel to rotate.

[0020] Furthermore, the extension length and installation angle of the rubber-cutting blade relative to the rubber-cutting bar are adjustable.

[0021] Furthermore, it also includes an electronic sensing device, which includes sensing elements disposed on the first blade holder and the rubber tapping blade bar, for sensing the relative position of the rubber tapping blade bar on the first blade holder, so as to control the start and stop of the rubber tapping blade during the rubber tapping operation.

[0022] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0023] This invention discloses a rubber tapping device that integrates a motor, worm gear, worm wheel, tapping blade, and tapping blade. The motor drives the worm gear to rotate, which in turn drives the worm wheel. The worm wheel is connected to the worm gear and, with the assistance of an electronic sensing device, provides rotational power to the tapping blade during its advance, exit, and return processes. This allows for relatively effortless bark cutting, ensuring smooth tapping operations. It significantly improves the stability and reliability of mechanical rubber tapping, thus increasing tapping yield.

[0024] Furthermore, by setting an elastic scraper on the first blade holder, the rubber tapping blade is cleaned when it rotates back to its original position after completing one tapping operation, thus preventing bark or other substances from remaining on the blade and affecting subsequent tapping operations. Attached Figure Description

[0025] The following sections will describe some specific embodiments of the invention in detail by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0026] Figure 1 This is a schematic diagram of the structure of a rubber tapping device provided in this invention;

[0027] Figure 2 A three-dimensional structural schematic diagram (I) of the rubber cutting blade provided in this invention;

[0028] Figure 3 This is a three-dimensional structural schematic diagram (II) of the rubber cutting blade provided in this invention.

[0029] Figure 4 This is a schematic diagram showing the unfolded shape of the rubber-cutting blade provided in this invention;

[0030] Figure 5 A schematic diagram (a) of the operation of the rubber cutting blade provided in this invention;

[0031] Figure 6 In this invention Figure 5 Enlarged image;

[0032] Figure 7 A schematic diagram (II) of the operation of the rubber tapping blade provided by the present invention;

[0033] Figure 8 A top view of the rubber tapping blade operation provided by the present invention;

[0034] Figure 9 This is a schematic diagram of a rubber tapping operation provided by the present invention;

[0035] The accompanying figure is labeled as follows:

[0036] 1. First cutter holder; 101. First limit baffle; 2. Worm gear; 3. Rubber tapping knife handle; 4. Rubber tapping blade; 401. Main blade; 4010. Main cutting edge; 4011. First tilt angle; 402. Secondary blade; 4020. Secondary cutting edge; 4021. Second tilt angle; 403. Handle; 5. Worm gear; 6. Motor; 7. Elastic scraper; 8. Limiting wheel; 9. Sharp blade tip; 10. Second cutter holder; 1001. Second limit baffle; 11. Adjustable spring; 12. Adjusting bolt; 13. Spring seat; 14. Rubber tree; 15. Bark; 16. Main control box; 17. Main motor; 18. Permanent magnet; 18E. Hall element I; 18F. Hall element II; 18G. Hall element III; 19. Main cutter holder; 20. Upper guide rail; 21. Lower guide rail; 22. Vertical guide rail; 23. Lead screw. Detailed Implementation

[0037] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] like Figure 1 The diagram shows a rubber tapping device, which includes a first cutter holder 1, a worm gear 2, a rubber tapping blade 3, a rubber tapping blade 4, a worm 5, a motor 6, and an elastic scraper 7.

[0039] Specifically, a worm gear 2 is rotatably mounted on the first cutter holder 1, and the aforementioned rubber tapping blade 3 is fixedly connected to the shaft of the worm gear 2. The worm gear 2 drives the rubber tapping blade 3 to rotate. A rubber tapping blade 4 is mounted on the rubber tapping blade 3, and the extension length and installation angle of the rubber tapping blade 4 relative to the rubber tapping blade 3 are adjustable. Specifically, the extension position of the rubber tapping blade 4 relative to the rubber tapping blade 3 can be adjusted along the length direction of the blade, and the installation angle of the rubber tapping blade 4 relative to the rubber tapping blade 3 can also be adjusted. That is, before the rubber tapping blade 4 is tightly connected to the rubber tapping blade 3, the extension length and installation angle of the rubber tapping blade 4 can be adjusted to meet the needs of rubber tapping operations.

[0040] A worm gear 5 is mounted on the side of the first cutter holder 1. One end of the worm gear 5 is connected to a motor 6, which provides driving force to the worm gear 5, causing it to rotate. The worm gear 5 is meshed with the aforementioned worm wheel 2. Through the transmission between the worm gear 5 and the worm wheel 2, the rubber cutting blade 4 on the rubber cutting blade holder 3 connected to the worm wheel 2 rotates during the moment of cutting and cutting. The entire process of cutting, cutting (stopping the blade), cutting, and resetting is completed under the control of the control board in the main control box 16 of the rubber cutting device via an electronic sensing device.

[0041] In addition, in this embodiment, an elastic scraper 7 is also provided on the first blade holder 1. When the rubber tapping blade 4 completes a rubber tapping operation, the elastic scraper 7 can be used to clean the bark or other substances remaining on the rubber tapping blade 4 after the blade is removed, so as to avoid affecting subsequent rubber tapping operations.

[0042] In this embodiment, a limiting wheel 8 is also provided, which is rotatably connected to the rubber tapping blade 3 fixed on the shaft of the worm gear 2. The limiting wheel 8 is provided so that it can press against the rubber tree 14 during rubber tapping operations to limit the cutting depth of the rubber tapping blade 4 and ensure that the tapping depth at the tapping point remains consistent.

[0043] In this embodiment, a second tool holder 10 is also provided outside the first tool holder 1, and an adjustable spring 11 is provided between the second tool holder 10 and the first tool holder 1. The adjustable spring 11 is used to suspend and support the first tool holder 1 within the second tool holder 10.

[0044] Specifically, an adjusting bolt 12 is threaded onto the second cutter holder 10. This adjusting bolt 12 abuts against the aforementioned adjustable spring 11 via a spring seat 13. By adjusting the tightness of the adjusting bolt 12, the abutment length of the bolt against the spring seat 13 is adjusted, thereby adjusting the tension of the adjustable spring 11. During rubber tapping, under the action of the limiting wheel 8, the tapping blade 4 can perform contour cutting according to the concave and convex shapes of the rubber tree 14 to meet actual tapping needs. The tension needs to be adjusted appropriately according to actual requirements.

[0045] In addition, in this embodiment, a first limiting baffle 101 is provided on both sides of the first tool holder 1, and a second limiting baffle 1001 is provided on the second tool holder 10. The first limiting baffle 101 and the second limiting baffle 1001 work together to limit the first tool holder 1 within the second tool holder 10, preventing the first tool holder 1 from falling out of the second tool holder 10.

[0046] In this embodiment, regarding the aforementioned rubber-cutting blade 4, refer to... Figure 2 The rubber tapping blade 4 includes a main blade 401, a secondary blade 402 connected to one end of the main blade 401, and a handle 403 connected to the other end of the main blade 401.

[0047] In this embodiment, a main cutting edge 4010 is provided on one end face of the main blade 401, and a secondary cutting edge 4020 is provided on the same end face of the secondary blade 402. The cutting edges of the main cutting edge 4010 and the secondary cutting edge 4020 face in the same direction. In this embodiment, see reference... Figure 2 , Figure 3 and Figure 4When the main blade 401 and the secondary blade 402 are integrally bent, a bending line is formed. This bending line is perpendicular to the aforementioned main blade 4010 and secondary blade 4020, respectively. Simultaneously, in this embodiment, the included angle between the main blade 401 and the secondary blade 402 is controlled at 75~80°.

[0048] Therefore, by utilizing the perpendicular setting of the bending line relative to the main and secondary cutting edges, and the 75~80° included angle between the main and secondary blades, when the rubber tapping blade 4 is performing rubber tapping operations, a small section extending from the outer side of the corner where the main blade 401 and the secondary blade 402 connect (i.e., Figure 5 The area behind point C (marked in the middle) should be kept at a certain distance from the rubber tree 14 located outside the tapping blade 4 to avoid the outside of the tapping blade 4 pressing on the xylem of the rubber tree 14, affecting the latex output, and improving the latex yield and tapping smoothness.

[0049] Figure 4 In the middle, when the main blade 401 and the secondary blade 402 are unfolded, the main cutting edge 4010 and the secondary cutting edge 4020 are on a straight line, or they may not be on a straight line.

[0050] See Figure 3 and Figure 5 The main cutting edge 4010 has a first tilt angle 4011 relative to the length of the main blade 401, and the secondary cutting edge 4020 has a second tilt angle 4021 relative to the length of the secondary blade 402.

[0051] The opening sizes of the first tilt angle 4011 and the second tilt angle 4021 can be the same or different, and can be reasonably adjusted according to the actual rubber tapping needs. In this embodiment, the angles of the first tilt angle 4011 and the second tilt angle 4021 are controlled at around 15°.

[0052] The tilt angle design allows the main blade 4010 and the secondary blade 4020 to have a sliding cutting function during operation, which can cut into the bark 15 with less effort, thereby improving the smoothness of the rubber tapping wound.

[0053] By designing a reasonable tilt angle, the sharpness of the blade is improved during operation, which can prevent excessive wear of the blade, increase the service life of the rubber tapping knife, and reduce the frequency of blade replacement.

[0054] In this embodiment, see Figure 2 A sharp tip 9 is formed at the intersection of the main blade 4010 and the secondary blade 4020. The sharp tip 9 helps to cut more easily into the bark 15 of the rubber tree 14, reduces cutting resistance, and improves tapping efficiency.

[0055] Furthermore, in this embodiment, both the main cutting edge 4010 and the secondary cutting edge 4020 are provided with a main cutting edge. The main cutting edge is located on the outer side of the rubber tapping blade 4. According to the process requirements of rubber tapping, the sharpness of the main cutting edge should be around 30°.

[0056] In this embodiment, an electronic sensing device is also provided. This electronic sensing device can be a magnetic sensing device or a photoelectric sensing device.

[0057] See Figure 8 When the electronic sensing device is set as a magnetic sensing device, a hole can be made in the rubber tapping blade 3, and a permanent magnet 18 can be installed in the hole. The permanent magnet 18 is correspondingly set with Hall element I 18E, Hall element II 18F and Hall element III 18G on the first blade holder 1. In this embodiment, there are three Hall elements: one is set at the initial position of the rubber tapping blade 4 (i.e., 18F in the figure), the second is set at the point where the rubber tapping blade 4 is in perpendicular contact with the rubber tree 14 before tapping (i.e., 18E in the figure), and the third is 18G in the figure, which is used for the installation and adjustment of the rubber tapping blade 4.

[0058] Hall effect elements I 18E and III 18G are symmetrically arranged with respect to the center of the worm gear 2. To facilitate the installation of the rubber tapping blade 4 and ensure that the blade 4 is perpendicular to the tree trunk before tapping, a Hall effect element III 18G is installed. The blade is installed at the mounting point of Hall effect element III 18G, which also allows adjustment of the extension length and installation angle of the rubber tapping blade 4 relative to the tapping shank 3, ensuring accurate adjustment of the blade 4 to the required state during trial tapping. It should be noted that Hall effect element III 18G is only used during the installation, adjustment, and maintenance of the rubber tapping blade 4; it does not function during actual tapping operations.

[0059] When the rubber tapping machine starts tapping operations after the tapping system issues an instruction, the main control box 16 in the tapping device starts the main motor 17. The vertical guide rail 22 and the lead screw 23 on the main unit move counterclockwise horizontally along the upper guide rail 20 and the lower guide rail 21, which are parallel to each other and encircle the rubber tree 14. At the same time, the tapping device moves downward under the action of the vertical guide rail 22 and the lead screw 23 until the tapping device returns to the starting tapping position, and the main motor 17 stops.

[0060] Then, motor 6 is started, and main motor 17 is started simultaneously. Main motor 17 drives vertical guide rail 22 and lead screw 23 to move clockwise horizontally along two parallel upper guide rails 20 and lower guide rail 21 that encircle the rubber tree 14. At the same time, the rubber tapping device moves upward under the action of vertical guide rail 22 and lead screw 23. Motor 6 synchronously drives worm gear 5, which in turn drives worm wheel 2, and worm wheel 2 drives rubber tapping blade 4 to rotate.

[0061] It is important to note that in this embodiment, when the rubber tapping device resets to the starting tapping position and begins tapping, motor 6 and main motor 17 start synchronously. This is because the cutting edge of the rubber tapping blade 4 and its rotation direction need to be consistent to prevent the blade from breaking during the tapping process. With both motors starting simultaneously, the rubber tapping blade 4 moves diagonally upwards, ensuring its movement direction aligns with its cutting edge, thus preventing breakage.

[0062] When the tapping blade 4 rotates and cuts into the rubber tree 14 until it reaches a position perpendicular to the tree 14, the permanent magnet 18 on the tapping blade 3 works in conjunction with the Hall element I 18E located perpendicularly. Upon sensing the tapping blade 4, the Hall element I 18E sends a signal to the main control box 16. At this point, the main control box 16 immediately shuts down the motor 6, while the main motor 17 continues to operate, driving the blade holder to move diagonally around the trunk, thus moving the tapping blade 4 to perform tapping operations on the rubber tree 14. The specific tapping length and depth can be adjusted according to actual needs.

[0063] When the rubber tapping blade 4 completes a tapping operation at a predetermined distance, the main motor 17 of the rubber tapper stops working and restarts the motor 6. The motor 6 drives the worm 5, the worm 5 drives the worm wheel 2, and the worm wheel 2 in turn drives the rubber tapping blade 4 to continue rotating counterclockwise away from the rubber tree 14 to complete the cutting action, until it rotates to the initial position of the rubber tapping blade 4. When the Hall element II 18F at the initial position senses the permanent magnet 18 on the rubber tapping blade 3, it will send a sensing signal to the main control box 16. The main control box 16 immediately shuts off the power to the motor 6, and the motor 6 stops working.

[0064] When a second rubber tapping operation is required, the main control box 16 will send a start command to the main motor 17, which will then drive the cutter head to move to the initial working position and perform the rubber tapping operation again.

[0065] And by Figure 8 and Figure 9 As can be seen, when the rubber tapping blade 4 rotates from its initial position to a position perpendicular to the rubber tree 14, the blade holder moves clockwise on the parallel upper guide rail 20 and lower guide rail 21, and the blade head of the rubber tapping blade 4 rotates counterclockwise on the vertical guide rail 22 to form a trajectory with a certain arc, namely the H part in the figure. The H trajectory wound on the cut bark 15 can also produce a certain amount of latex, thereby increasing the latex production accordingly.

[0066] In actual operation, the rubber tapper equipped with the tapping device is mounted on the rubber tree 14 to be tapped. When the tapper is started and the main blade holder 19 moves to the starting point, the motor 6 is started. The motor 6 drives the worm 5 to rotate. The worm 5 is also connected to the worm wheel 2, which in turn drives the tapping blade 4 connected to the worm wheel 2 to rotate.

[0067] In existing technology, before tapping rubber, a vertical groove needs to be pre-cut on the tree trunk. This groove is generally quite wide so that after the bark is removed, the tapping blade can approach the wood within the bark 15 for tapping, making it easier to cut the bark at an angle later. However, with this method, the rubber at the groove where the bark has been removed solidifies quickly and cannot be cut again during each tapping, thus affecting the tapping yield to some extent. In this embodiment, because the tapping blade 4 can be made to cut more easily, it is not necessary to pre-cut a vertical groove on the tree trunk, which is beneficial to increasing the tapping yield.

[0068] When the blade is extended, the bark 15 is smoothly cut off by the rotation of the tapping blade 4, thus avoiding the problem of blade jamming. At the same time, the cut also helps to increase production. During the resetting process of the tapping blade 4, the preset elastic scraper 7 can remove the bark and latex adhering to the blade, which greatly reduces the labor intensity of the tappers and ensures the smooth operation of mechanical tapping.

[0069] As the worm gear 2 and worm 5 continue to drive, the rubber tapping blade 4 will continue to rotate away from the rubber tree 14 (i.e., the direction of the blade) after it is extended. When the rubber tapping blade 4 rotates to a position close to the aforementioned Hall element II 18F, the Hall element II 18F senses the permanent magnet 18, the main control box 16 shuts down the motor 6, and the rubber tapping blade 4 returns to the initial working position.

[0070] In summary, the rubber tapping device provided in this invention integrates a motor 6, a worm gear 5, and a worm wheel 2 to provide power for the rubber tapping blade 4 to rotate inward and outward. Simultaneously, a first tilt angle 4011 is formed on the main blade 4010 relative to the length of the main blade 401, and a second tilt angle 4021 is formed on the secondary blade 4020 relative to the length of the secondary blade 402. This allows the rubber tapping blade 4 to slide and cut on the rubber tree 14 during both inward and outward movements, reducing tapping resistance and enabling relatively effortless bark cutting, thus ensuring smooth tapping operations.

[0071] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A tapping device, characterized in that It includes: The first knife seat (1); Worm gear (2), the worm gear (2) is rotationally arranged on the first knife seat (1); Rubber tapping knife rod (3), the rubber tapping knife rod (3) is fixedly connected with the shaft of the worm gear (2), and the worm gear (2) is used to drive the rubber tapping knife rod (3) to rotate; Rubber tapping knife blade (4), the rubber tapping knife blade (4) is arranged on the rubber tapping knife rod (3); Worm (5), the worm (5) is engaged with the worm gear (2); Motor (6), the output end of the motor (6) is connected with the worm (5); It also includes a resilient scraper (7), the resilient scraper (7) is arranged on the first knife seat (1), and the resilient scraper (7) is used for cleaning when the rubber tapping knife blade (4) is rotated and reset after completing a rubber tapping operation; It also includes a limiting wheel (8), the limiting wheel (8) is rotationally connected with the pin shaft on the rubber tapping knife rod (3) fixed on the shaft of the worm gear (2), and the limiting wheel (8) is used for abutting against the rubber tree to limit the cutting depth of the rubber tapping knife blade (4) during the rubber tapping operation. The first knife seat (1) is provided with a second knife seat (10) on the outer periphery, and an adjustable spring (11) is arranged between the first knife seat (1) and the second knife seat (10), the adjustable spring (11) is used for suspending and supporting the first knife seat (1) in the second knife seat (10); The second knife seat (10) is connected with a main machine knife seat (19), and the main machine knife seat (19) drives the rubber tapping device to move up and down and left and right to complete the rubber tapping operation; The protruding length and installation angle of the rubber tapping knife blade (4) relative to the rubber tapping knife rod (3) are adjustable; It also includes an electronic sensing device, which is used for sensing the relative position of the rubber tapping knife rod (3) on the first knife seat (1) to control the start and stop operation of the rubber tapping knife blade (4); The electronic sensing device is a magnetic sensing device, a hole is formed in the rubber tapping knife rod (3), a permanent magnet (18) is arranged in the hole, and the permanent magnet (18) is arranged corresponding to a Hall element I (18E), a Hall element II (18F) and a Hall element III (18G) on the first knife seat (1); The rubber tapping knife blade (4) includes a main blade (401), a secondary blade (402) connected with one end of the main blade (401), and a handle (403) connected with the other end of the main blade (401); A first inclination angle (4011) is formed on the main blade (401) relative to the length direction of the main blade (401), and a second inclination angle (4021) is formed on the secondary blade (4020) relative to the length direction of the secondary blade (402); A sharp knife tip part (9) is also formed at the intersection of the main blade (4010) and the secondary blade (4020).

2. A tapping device according to claim 1, characterised in that The second knife seat (10) is threadedly connected with an adjusting bolt (12), the adjusting bolt (12) abuts against the adjustable spring (11) through a spring seat (13), and the adjusting bolt (12) is used for adjusting the tension of the adjustable spring (11).

3. A tapping device according to claim 1, characterised in that The first tool seat (1) is provided with first limiting baffle plates (101) on both sides, the second tool seat (10) is provided with second limiting baffle plates (1001), the first limiting baffle plates (101) and the second limiting baffle plates (1001) cooperate to limit the first tool seat (1) in the second tool seat (10).

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