A cutter head structure and a rubber tapping machine

Abstract

The utility model discloses a tool bit structure and rubber tapping machine relates to the field of rubber tapping machine, including rubber tapping blade, the rubber tapping blade includes main blade and vice blade, the main blade with the vice blade is set up in two parts, the main blade includes first main part and sets up the first blade part of one side of first main part, the vice blade includes second main part and sets up the second blade part of one side of second main part, the first blade part with the second blade part opposite inclination setting and intersect to constitute the knife tip, the material strength of main blade is greater than the material strength of vice blade, the vice blade still includes the fixed sheet being linked with second main part, the fixed sheet with first main part is pasted and fixes. The utility model has the advantages of long service life of rubber tapping blade.

Description

Technical Field

[0001] This utility model relates to the field of rubber tapping machines, specifically to a cutter head structure and a rubber tapping machine. Background Technology

[0002] Automated rubber tapping technology replaces manual labor in tasks such as cutting the bark of rubber trees and collecting latex, thereby improving production efficiency, reducing labor intensity, and ensuring tapping quality. As the tapping actuator of an automated rubber tapping machine, the performance of the tapping blade directly affects the tapping depth, latex flow rate, and equipment maintenance cycle, and is a key factor determining the economics of automated rubber tapping.

[0003] Modern rubber tapping blades are all one-piece designs, meaning that both the main and secondary cutting edges are integrated into the blade. However, because the secondary cutting edge needs to be bent, it is affected by the material and requires the selection of materials with good ductility, resulting in low blade strength and short service life. Utility Model Content

[0004] This utility model aims to solve one of the technical problems in related technologies to a certain extent. To this end, this utility model provides a blade head structure and a rubber tapping machine, which has the advantage of a long service life for the rubber tapping blade.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A cutting head structure includes a rubber cutting blade, which comprises a main blade and a secondary blade, the main blade and the secondary blade being separately disposed. The main blade includes a first main body portion and a first cutting edge portion disposed on one side of the first main body portion. The secondary blade includes a second main body portion and a second cutting edge portion disposed on one side of the second main body portion. The first cutting edge portion and the second cutting edge portion are disposed at opposite inclinations and intersect to form a cutting tip. The material strength of the main blade portion is greater than that of the secondary blade portion. The secondary blade portion also includes a fixing piece connected to the second main body portion, the fixing piece being attached to and fixed to the first main body portion.

[0006] In this application, the rubber tapping blade includes a main blade and a secondary blade. The main blade is used for rotary cutting of the bark, and the secondary blade is used for cutting the bark surface that is longitudinally connected to the trunk. The first and second cutting edges are angled relative to each other and intersect to form a sharp tip, replacing the rounded tip formed by the inner cutting edge, thus increasing the number of latex tubes cut during operation. To achieve the relative angle and angled connection between the first and second cutting edges, the secondary blade needs to be bent at a certain angle to align with the first cutting edge. This bending process requires the secondary blade to be made of a material with good ductility, but materials with good ductility have low strength. In the prior art, the main blade and secondary blade are often integrally formed. To achieve the bending of the secondary blade, both the main blade and secondary blade must be made of the same low-strength material. Therefore, the rubber tapping blades in the prior art have low strength and short service life. In this application, the main blade and the secondary blade are separated, allowing the secondary blade to be machined independently. Even with the first and second cutting edges at a certain angle (i.e., the secondary blade bends), the main blade still achieves higher strength and sharpness, extending the lifespan of the rubber-cutting blade without being limited by the material. The fixing plate is attached to the first main body and then fixed in place; that is, the fixing plate and the first main body engage in surface contact, increasing the contact area compared to point contact. This improves shear strength, resulting in a more secure bond between the main blade and the secondary blade, further extending the lifespan of the rubber-cutting blade.

[0007] Optionally, the fixing piece is plate-shaped and includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall in sequence along its circumference. A first weld point is provided at the connection between the first sidewall and the first main body, a second weld point is provided at the connection between the second sidewall and the first main body, a third weld point is provided at the connection between the third sidewall and the first main body, and a fourth weld point is provided at the connection between the fourth sidewall and the first main body.

[0008] The plate-like structure changes the contact surface between the fixing plate and the first main body from line or point contact in the prior art to surface contact, and the use of multi-point welding improves the connection stability. The first to fourth welding points are located at the junctions of the four side walls and the first main body, forming a symmetrical distribution, which improves welding stability, avoids connection failure, and prevents the fixing plate from rotating and loosening.

[0009] Optionally, the fourth sidewall is arc-shaped, and the fixing piece smoothly transitions with the second blade through the fourth sidewall and is integrally formed.

[0010] The fourth sidewall of the fixing plate has an arc-shaped structure that smoothly transitions to the second cutting edge, avoiding the stress concentration problem of right-angle connections in existing technologies and significantly improving the overall impact resistance of the blade. Simultaneously, the one-piece molding process ensures the metal-to-metal bond strength between the fixing plate and the second cutting edge, further enhancing the crack resistance of the connection area. This reduces the risk of breakage and wear rate of the rubber tapping blade during operation, extends its service life, and reduces the frequency of rubber tapping machine downtime for maintenance and production losses.

[0011] Optionally, a fifth weld point is provided at the connection between the first cutting edge and the second cutting edge.

[0012] A fifth welding point is set at the connection between the first and second cutting edges, which increases the stability of the connection between the first and second cutting edges, prevents the first and second cutting edges from being misaligned during rubber cutting, avoids loosening or breakage of the connection, and thus improves the service life of the blade.

[0013] Optionally, the fixing piece is provided with a welding hole through its own thickness direction, and a sixth welding point is provided at the connection between the welding hole and the first main body.

[0014] The welding hole is located in the middle of the fixing plate, so that the middle part of the fixing plate is also fixed to the first main body by welding, ensuring that the load in the middle is transferred to the first main body. In addition, the welding hole also has a weight-reduction function to balance the connection strength and weight reduction requirements.

[0015] Optionally, the fixing plate has a first mounting hole extending through its own thickness direction, and the first main body has a second mounting hole corresponding to the first mounting hole extending through its own thickness direction. Fasteners are fitted into the first mounting hole and the second mounting hole to connect the main blade and the auxiliary blade.

[0016] The fixing plate has a first mounting hole extending through its thickness. A second mounting hole, matching the position and size of the first mounting hole, is formed on the first main body, creating a hole-to-hole mating structure. Fasteners inserted into both the first and second mounting holes achieve a rigid connection between the main blade and the secondary blade. Users can quickly disassemble the secondary blade using only a wrench or punch, facilitating maintenance of the rubber-tapping blade and making it suitable for field operations.

[0017] Optionally, the cutter head structure includes a blade support and a cutter head support. The rubber cutting blade is mounted on the blade support, and the blade support is connected to the cutter head support and the two can rotate relative to each other. The blade support has a first positioning boss and a second positioning boss that are opposite to each other and spaced apart. The cutter head support has a third positioning boss, and the third positioning boss is rotatably disposed between the first positioning boss and the second positioning boss by a positioning pin.

[0018] The first and second positioning bosses are positioned opposite each other and spaced apart, forming a rotating groove. The third positioning boss is installed within this rotating groove. When the blade holder is subjected to external force (such as tapping resistance or manual adjustment), the third positioning boss acts as a rotation axis, rotating relative to the first and second positioning bosses. This allows the blade holder to rotate relative to the cutter head holder to adjust the blade position. Specifically, during tapping, the cutter head holder is fixed to the tapping machine, and the blade holder rotates relative to it. This dynamic adjustment of the blade holder makes the cutting trajectory more closely conform to the curved surface of the rubber tree bark, facilitating the blade's rotational cutting of the rubber tree. Furthermore, the third positioning boss, clamped between the first and second positioning bosses, improves the stability of the relative rotation between the blade holder and the cutter head holder.

[0019] Optionally, the first positioning boss, the second positioning boss, and the third positioning boss are respectively provided with a first positioning hole, a second positioning hole, and a third positioning hole; the positioning pin forms a tight fit with the third positioning hole, and the positioning pin forms a loose fit with the first positioning hole and the second positioning hole; or the positioning pin forms a loose fit with the third positioning hole, and the positioning pin forms a tight fit with the first positioning hole and the second positioning hole.

[0020] The third locating hole and the locating pin are interference-fitted to ensure a rigid connection between the cutter head support and the locating pin. The locating pin and the third locating boss act as the rotation axis to bear axial tensile force. In this case, the first and second locating holes and the locating pin are clearance-fitted, allowing the cutter head support to rotate around the locating pin while limiting radial movement through the hole walls. Alternatively, the third locating hole and the locating pin can be clearance-fitted, allowing for slight relative movement between the cutter head support and the locating pin, adapting to deformation coordination under complex working conditions. The first and second locating holes and the locating pin are interference-fitted, locking the cutter head support and the locating pin as a single unit, and improving rotational rigidity through double-hole constraint.

[0021] Optionally, a clamping plate is provided on the side of the blade holder away from the cutter head holder. The clamping plate is fixed to the blade holder by fasteners and presses against the front surface of the second main body of the rubber cutting blade. An adjusting screw is provided on the side surface of the second main body, which passes through the blade holder and abuts against the rubber cutting blade.

[0022] The rubber tapping blade is clamped between a clamping plate and a blade holder. The clamping plate is secured to the blade holder with fasteners. The clamping force on the rubber tapping blade is adjusted by changing the distance between the fasteners and the blade holder, ensuring the blade will not fall off during use. Furthermore, shims can be added between the clamping plate and the blade holder to compensate for assembly gaps and ensure even distribution of clamping force. An adjusting screw presses against the rubber tapping blade; therefore, the cutting depth at the blade tip can be adjusted by rotating the adjusting screw.

[0023] Furthermore, this utility model also provides a rubber tapping machine, including a base and a blade head structure mounted on the base, wherein the blade head structure includes any of the aforementioned blade head structures. The reasoning process for the beneficial effects of the rubber tapping machine provided by this utility model and the aforementioned blade head structures is similar, and will not be repeated here.

[0024] These features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. The preferred embodiments or means of this utility model will be shown in detail in conjunction with the accompanying drawings, but are not intended to limit the technical solutions of this utility model. In addition, each of these features, elements and components appearing in the following text and drawings is multiple and is labeled with different symbols or numbers for convenience, but all represent parts with the same or similar structure or function. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the cutter head structure in an embodiment of the present invention; Figure 2 This is a schematic diagram of the rubber cutting blade in an embodiment of the present invention; Figure 3 This is a schematic diagram of the secondary blade in an embodiment of the present invention; Figure 4 This is a schematic diagram of the main blade in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the main blade and the secondary blade after assembly in an embodiment of this utility model; Figure 6 for Figure 5 A structural diagram from another angle; Figure 7 This is a schematic diagram of the structure of the main blade and the secondary blade connected by fasteners in this utility model; Figure 8 for Figure 1 An explosion diagram; Figure 9 This is a partial structural diagram of the blade holder in an embodiment of the present utility model.

[0026] Among them, 1. Rubber cutting blade; 11. Main blade; 111. First main body; 1111. Second mounting hole; 112. First cutting edge; 12. Secondary blade; 121. Second main body; 122. Second cutting edge; 123. Fixing plate; 1231. First side wall; 1232. Second side wall; 1233. Third side wall; 1234. Fourth side wall; 1235. Welding hole; 1236. First mounting hole; 13. First weld point; 14. Second weld point; 15. Third weld point; 16. Fourth weld point; 17. Fifth weld point; 18. Sixth weld point; 2. Blade bracket; 21. First positioning boss; 211. First positioning hole; 22. Second positioning boss; 221. Second positioning hole; 23. Positioning pin; 24. Clamping plate; 25. Adjusting screw; 3. Blade head bracket; 31. Third positioning boss; 311. Third positioning hole. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.

[0028] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this patent. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0029] Example: like Figures 1 to 6 As shown, this embodiment provides a cutting head structure, including a rubber cutting blade 1. The rubber cutting blade 1 includes a main blade 11 and a secondary blade 12, which are separately disposed. The main blade 11 includes a first main body portion 111 and a first cutting edge portion 112 disposed on one side of the first main body portion 111. The secondary blade 12 includes a second main body portion 121 and a second cutting edge portion 122 disposed on one side of the second main body portion 121. The first cutting edge portion 112 and the second cutting edge portion 122 are inclined relative to each other and intersect to form a cutting tip. The material strength of the main blade 11 is greater than that of the secondary blade 12. The secondary blade 12 also includes a fixing piece 123 connected to the second main body portion 121. The fixing piece 123 is attached to and fixed to the first main body portion 111.

[0030] In this embodiment, the rubber tapping blade 1 includes a main blade 11 and a secondary blade 12. The main blade 11 is used for rotary cutting of the bark, and the secondary blade 12 is used for cutting the bark surface that is longitudinally connected to the tree trunk. The main blade 11 includes an integrally formed first body portion 111 and a first cutting edge 112. The thickness of the first cutting edge 112 gradually decreases in the direction away from the first body portion 111. In addition, the first body portion 111 can be made of a high-strength alloy or other metallic material to withstand the impact force of rotary cutting and ensure that the first cutting edge 112 does not deform during the cutting process. The secondary blade 12 includes an integrally formed second body portion 121 and a second cutting edge 122. The second cutting edge 122 is formed on one side of the second body portion 121, and the thickness of the first cutting edge 112 gradually decreases in the direction away from the first body portion 111. The first cutting edge 112 and the second cutting edge 122 are inclined relative to each other, and their points of minimum thickness intersect to form an acute-angled blade tip to cut the bark fiber layer that is longitudinally connected to the tree trunk. Furthermore, the first cutting edge 112 and the second cutting edge 122 are inclined relative to each other and intersect to form a sharp blade tip, replacing the rounded blade tip formed by the inner cutting edge, which can increase the number of milk tubes cut during operation. To achieve the relative inclination and angled connection of the first cutting edge 112 and the second cutting edge 122, the secondary blade 12 needs to be bent to a certain angle to connect with the first cutting edge 112. However, the bending process requires the secondary blade 12 to be made of a material with good ductility, but materials with good ductility have low strength. In the prior art, the main blade 11 and the secondary blade 12 are often integrally set. To achieve the bending of the secondary blade 12, the main blade 11 and the secondary blade 12 must be made of the same low-strength material. Therefore, the rubber cutting blade 1 in the prior art has low strength and short service life. In this embodiment, the main blade 11 and the secondary blade 12 are set separately. Therefore, the secondary blade 12 can be processed separately. When the first cutting edge 112 and the second cutting edge 122 are at a certain angle (i.e., the secondary blade 12 is bent), the main blade 11 can still have higher strength and sharpness, thereby achieving rapid cutting of the glue line without being limited by the material.

[0031] In this embodiment, the fixing piece 123 is integrally stamped with the second main body 121, and the fixing piece 123 is fixed after being attached to the first main body 111. That is, the fixing piece 123 and the first main body 111 are in surface contact, which increases the contact area compared to point contact, thus improving the shear strength. The main blade 11 and the secondary blade 12 are more firmly bonded, extending the service life of the rubber cutting blade 1. If the fixing piece 123 is only connected to the first main body 111 by spot welding or riveting, the contact area is small, the stress is more concentrated, and the rubber cutting blade 1 is prone to micro-cracks under cutting vibration or external impact. In addition, the surface contact makes the fixing piece 123 and the first main body 111 form an integral structure, which allows for more direct force transmission during cutting and reduces local deformation. For example, when cutting the bark of hard rubber trees, the main blade 11 and the secondary blade 12, which are connected by point contact, are prone to misalignment, leading to damage to the rubber cutting blade 1. In other embodiments, the fixing piece 123 can also be connected to the second main body 121 by welding, gluing or other means. In this case, by bending the fixing piece 123, the angle between the first blade 112 and the second blade 122 can be changed, and the second main body 121 and the second blade 122 can be made of materials with higher strength than the fixing piece 123.

[0032] like Figure 5 and Figure 6 As shown, the fixing piece 123 is plate-shaped and includes a first side wall 1231, a second side wall 1232, a third side wall 1233, and a fourth side wall 1234 in sequence along its circumference. A first weld point 13 is provided at the connection between the first side wall 1231 and the first main body 111. A second weld point 14 is provided at the connection between the second side wall 1232 and the first main body 111. A third weld point 15 is provided at the connection between the third side wall 1233 and the first main body 111. A fourth weld point 16 is provided at the connection between the fourth side wall 1234 and the first main body 111.

[0033] In this embodiment, the fixing piece 123 is generally rectangular in shape. The first sidewall 1231, the second sidewall 1232, the third sidewall 1233, and the fourth sidewall 1234 can disperse the cutting force to multiple directions, reducing local stress concentration. The plate-like structure changes the contact surface between the fixing piece 123 and the first main body 111 from line contact or point contact in the prior art to surface contact, and multi-point welding is used to improve the connection stability. Specifically, a first weld point 13 is provided at the connection between the first sidewall 1231 and the first main body 111, a second weld point 14 is provided at the connection between the second sidewall 1232 and the first main body 111, a third weld point 15 is provided at the connection between the third sidewall 1233 and the first main body 111, and a fourth weld point 16 is provided at the connection between the fourth sidewall 1234 and the first main body 111. The first weld point 13 to the fourth weld point 16 are located at the junction of the four side walls and the first main body 111, forming a symmetrical distribution, which improves welding stability, avoids connection failure, and prevents the fixing piece 123 from rotating and loosening.

[0034] The fourth sidewall 1234 is arc-shaped, and the fixing piece 123 smoothly transitions with the second blade 122 through the fourth sidewall 1234 and is integrally formed.

[0035] In this embodiment, the fourth sidewall 1234 of the fixing plate 123 has an arc-shaped structure and a smooth transition with the second cutting edge 122, avoiding the stress concentration problem of right-angle connection in the prior art and significantly improving the overall impact resistance of the blade. At the same time, the one-piece molding process ensures the metal bonding strength between the fixing plate 123 and the second cutting edge 122, further enhancing the crack resistance of the connection area, thereby reducing the risk of breakage and wear rate of the rubber tapping blade 1 during operation, extending its service life, and reducing the frequency of rubber tapping machine downtime for maintenance and production losses.

[0036] A fifth welding point 17 is provided at the connection between the first cutting edge 112 and the second cutting edge 122.

[0037] In this embodiment, a fifth welding point 17 is provided at the connection between the first blade 112 and the second blade 122, which increases the stability of the connection between the first blade 112 and the second blade 122, prevents the first blade 112 and the second blade 122 from being misaligned during the rubber cutting process, avoids loosening or breakage of the connection, and thus improves the service life of the blade.

[0038] The fixing plate 123 has a welding hole 1235 through it along its own thickness direction, and a sixth welding point 18 is provided at the connection between the welding hole 1235 and the first main body 111.

[0039] In this embodiment, the welding hole 1235 is located in the middle of the fixing piece 123, so that the middle part of the fixing piece 123 is also fixed to the first main body 111 by welding, ensuring that the load in the middle is transferred to the first main body 111. The welding hole 1235 also has a weight-reduction function, balancing the connection strength and weight reduction requirements. Specifically, in this embodiment, there are two welding holes 1235, and the two welding holes 1235 are symmetrically arranged. In other embodiments, the number of welding holes 1235 may be three, four, etc.

[0040] In yet another embodiment, such as Figure 7 As shown, the fixing plate 123 has a first mounting hole 1236 through it along its own thickness direction, and the first main body 111 has a second mounting hole 1111 corresponding to the first mounting hole 1236 along its own thickness direction. Fasteners are installed in the first mounting hole 1236 and the second mounting hole 1111 to connect the main blade 11 and the auxiliary blade 12.

[0041] In this embodiment, the fixing plate 123 has a first mounting hole 1236 extending through it along the thickness direction, and the first main body 111 has a second mounting hole 1111 that matches the position and size of the first mounting hole 1236, forming a hole-to-hole mating structure. After the fasteners are inserted into the first mounting hole 1236 and the second mounting hole 1111, a rigid connection between the main blade 11 and the secondary blade 12 can be achieved. Users can quickly disassemble the secondary blade 12 using only a wrench or punch, facilitating the maintenance of the rubber tapping blade 1, and making it suitable for field operations (such as rubber plantations and orchards). Specifically, the fasteners can be countersunk bolts, spring pins, or rivets; no limitation is made here.

[0042] like Figure 1 , Figure 8 and Figure 9 As shown, the cutter head structure includes a blade support 2 and a cutter head support 3. The rubber cutting blade 1 is mounted on the blade support 2. The blade support 2 is connected to the cutter head support 3 and the two can rotate relative to each other. The blade support 2 has a first positioning boss 21 and a second positioning boss 22 that are opposite to each other and spaced apart. The cutter head support 3 has a third positioning boss 31 that is rotatably positioned between the first positioning boss 21 and the second positioning boss 22 by a positioning pin 23.

[0043] In this embodiment, the first positioning boss 21 and the second positioning boss 22 are arranged vertically opposite each other and spaced apart to form a rotating groove. The third positioning boss 31 is installed in the rotating groove. When the blade support 2 is subjected to external force (such as rubber tapping resistance or manual adjustment), the third positioning boss 31 acts as a rotation axis and rotates relative to the first positioning boss 21 and the second positioning boss 22. That is, the blade support 2 can rotate relative to the blade head support 3 to adjust the position of the blade. Specifically, during rubber tapping, the blade head support 3 is fixed on the rubber tapping machine, and the blade support 2 rotates relative to the blade head support 3. The dynamic adjustment of the blade support 2 makes the cutting trajectory more closely conform to the curved surface of the rubber tree bark, so as to facilitate the rotation of the blade to cut the rubber tree. In addition, the third positioning boss 31 is clamped between the first positioning boss 21 and the second positioning boss 22, which improves the stability of the relative rotation of the blade support 2 and the blade head support 3.

[0044] The first positioning boss 21, the second positioning boss 22, and the third positioning boss 31 are respectively provided with a first positioning hole 211, a second positioning hole 221, and a third positioning hole 311; the positioning pin 23 forms a tight fit with the third positioning hole 311, and the positioning pin 23 forms a loose fit with the first positioning hole 211 and the second positioning hole 221; or the positioning pin 23 forms a loose fit with the third positioning hole 311, and the positioning pin 23 forms a tight fit with the first positioning hole 211 and the second positioning hole 221.

[0045] In this embodiment, the third positioning hole 311 and the positioning pin 23 are interference-fitted to ensure a rigid connection between the cutter head support 3 and the positioning pin 23. The positioning pin 23 and the third positioning boss 31 serve as the rotation axis to bear axial tension. At this time, the first positioning hole 211 and the second positioning hole 221 are clearance-fitted with the positioning pin 23, allowing the cutter head support 2 to rotate around the positioning pin 23, while limiting radial movement through the hole wall. Alternatively, the third positioning hole 311 and the positioning pin 23 are clearance-fitted, allowing the cutter head support 3 and the positioning pin 23 to move slightly relative to each other, adapting to deformation coordination under complex working conditions. The first positioning hole 211 and the second positioning hole 221 are interference-fitted with the positioning pin 23, locking the cutter head support 2 and the positioning pin 23 as a whole, and improving rotational stiffness through double-hole constraint.

[0046] A clamping plate 24 is provided on the side of the blade holder 2 away from the blade head holder 3. The clamping plate 24 is fixed to the blade holder 2 by fasteners and clamps the front surface of the second main body 121 of the rubber cutting blade 1. An adjusting screw 25 is provided on the side surface of the second main body 121, which passes through the blade holder 2 and abuts the rubber cutting blade 1.

[0047] In this embodiment, the rubber cutting blade 1 is pressed between the clamping plate 24 and the blade holder 2. The clamping plate 24 is fixed to the blade holder 2 by fasteners. Preferably, the fasteners should avoid penetrating the rubber cutting blade 1 to prevent damage to its integrity. Specifically, the fasteners are bolts, spring pins, or rivets. Preferably, bolts are used as fasteners in this embodiment. The degree of clamping on the rubber cutting blade 1 is adjusted by adjusting the distance between the bolt and the blade holder 2 to prevent the rubber cutting blade 1 from falling off during use. Furthermore, a shim can be added between the clamping plate 24 and the blade holder 2 to compensate for the assembly gap and ensure uniform distribution of clamping force. The adjusting screw 25 is pressed against the rubber cutting blade 1, so the cutting depth at the blade tip can be adjusted by rotating the adjusting screw 25.

[0048] In addition, this embodiment also provides a rubber tapping machine, including a base and a cutter head structure mounted on the base, the cutter head structure including any of the aforementioned cutter head structures.

[0049] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A blade structure, comprising a rubber-tapping blade, characterized in that, The rubber tapping blade includes a main blade and a secondary blade, which are separately disposed. The main blade includes a first main body and a first cutting edge disposed on one side of the first main body. The secondary blade includes a second main body and a second cutting edge disposed on one side of the second main body. The first cutting edge and the second cutting edge are inclined relative to each other and intersect to form a blade tip. The material strength of the main blade is greater than that of the secondary blade. The secondary blade also includes a fixing piece connected to the second main body, which is attached to and fixed to the first main body.

2. The cutter head structure according to claim 1, characterized in that, The fixing plate is plate-shaped and includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall in sequence along its circumference. A first weld point is provided at the connection between the first sidewall and the first main body, a second weld point is provided at the connection between the second sidewall and the first main body, a third weld point is provided at the connection between the third sidewall and the first main body, and a fourth weld point is provided at the connection between the fourth sidewall and the first main body.

3. The cutter head structure according to claim 2, characterized in that, The fourth sidewall is arc-shaped, and the fixing piece smoothly transitions with the second blade through the fourth sidewall and is integrally formed.

4. The cutter head structure according to claim 1, characterized in that, A fifth weld point is provided at the connection between the first cutting edge and the second cutting edge.

5. The cutter head structure according to claim 1, characterized in that, The fixing plate has a welding hole extending through its own thickness, and a sixth welding point is provided at the connection between the welding hole and the first main body.

6. The cutter head structure according to claim 1, characterized in that, The fixing plate has a first mounting hole extending through its own thickness direction, and the first main body has a second mounting hole corresponding to the first mounting hole extending through its own thickness direction. Fasteners are fitted into the first mounting hole and the second mounting hole to connect the main blade and the auxiliary blade.

7. The cutter head structure according to claim 1, characterized in that, The cutter head structure includes a blade support and a cutter head support. The rubber cutting blade is mounted on the blade support, and the blade support is connected to the cutter head support and the two can rotate relative to each other. The blade support has a first positioning boss and a second positioning boss that are opposite to each other and spaced apart. The cutter head support has a third positioning boss, and the third positioning boss is rotatably positioned between the first positioning boss and the second positioning boss by a positioning pin.

8. The cutter head structure according to claim 7, characterized in that, The first positioning boss, the second positioning boss, and the third positioning boss are respectively provided with a first positioning hole, a second positioning hole, and a third positioning hole; the positioning pin forms a tight fit with the third positioning hole, and the positioning pin forms a loose fit with the first positioning hole and the second positioning hole; or the positioning pin forms a loose fit with the third positioning hole, and the positioning pin forms a tight fit with the first positioning hole and the second positioning hole.

9. The cutter head structure according to claim 7, characterized in that, A clamping plate is provided on the side of the blade holder away from the cutter head holder. The clamping plate is fixed to the blade holder by fasteners and presses against the front surface of the second main body of the rubber cutting blade. An adjusting screw is provided on the side surface of the second main body, which passes through the blade holder and abuts against the rubber cutting blade.

10. A rubber tapping machine, characterized in that, It includes a base and a cutting head structure mounted on the base, the cutting head structure including the cutting head structure according to any one of claims 1 to 9.

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