Semi-automatic electric rubber tapping knife
By improving the bearing structure, propeller design, and heat dissipation system of the electric rubber tapping knife, the problems of high noise, high resistance, and poor heat dissipation have been solved, resulting in a more efficient and quieter rubber tapping operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 顾斌
- Filing Date
- 2025-08-08
- Publication Date
- 2026-06-30
AI Technical Summary
Existing electric rubber tapping knives suffer from problems such as high noise, high bearing rotation resistance, uneven feed, non-adjustable length, and poor heat dissipation during use.
The bearing structure consists of two parallel bearings combined with a left-handed propeller with a hard helical spring, a heat dissipation angular contact ball and a cooling fan. The motor is controlled by a current speed controller and a positioning speed controller. The housing is equipped with a dust cover and a power supply anti-crack rubber cover to improve stability and safety.
It reduces noise, decreases bearing rotation resistance, achieves smooth propulsion, has an adjustable length, improves heat dissipation efficiency, is easy to operate, and enhances work efficiency.
Smart Images

Figure CN224419594U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rubber tapping knife technology, and in particular to a semi-automatic electric rubber tapping knife. Background Technology
[0002] The natural rubber produced by rubber trees is the main raw material for making rubber, which in turn can be used to manufacture paints and soaps, produce high-quality fibers, and produce activated carbon, furfural, etc. After chemical treatment, it can be used to make high-end furniture, fiberboard, plywood, and pulp. In addition, rubber plantations are sustainable tropical forest ecosystems and are pollution-free and renewable natural resources.
[0003] Currently, electric rubber tapping knives produced on the market, while offering advantages such as reducing the labor intensity of rubber tappers and saving time by using electric motors as power sources, still have significant room for technological improvement. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of existing technologies and propose a semi-automatic electric rubber cutting knife. The technical solution adopted by this utility model is as follows:
[0005] A semi-automatic electric rubber tapper includes a housing and an operating structure located inside the housing. The operating structure includes a motor fixed inside the housing. A core rod is located at the motor's power output end. A cooling fan is fitted onto the core rod. A heat dissipation angular contact ball is fitted onto the end of the core rod away from the motor. An eccentric counterweight is located on the side of the heat dissipation angular contact ball away from the cooling fan. A pusher is located on the side of the eccentric counterweight away from the core rod. A bearing structure is placed on the end of the pusher away from the eccentric counterweight. A bearing connector is located on one side of the bearing structure. A guide retainer is located on the end of the bearing connector away from the bearing structure. A connecting rod is located on the end of the guide retainer away from the bearing connector. A spring is movably fitted onto the connecting rod. The connecting rod has a telescopic impact rod at the end away from the guide fixing device. One end of the telescopic impact rod extends out of the end of the outer shell. A knife holder is sleeved on the telescopic impact rod. The motor has a motor heat dissipation fixing plate at the end away from the cooling fan. An electric strip is provided on the side of the motor heat dissipation fixing plate away from the motor. A current positioning speed regulator is provided at the end of the electric strip away from the motor heat dissipation fixing plate. The current speed regulator is located between the electric strip and the current positioning speed regulator. A nut is provided at the end of the current positioning speed regulator away from the current speed regulator. The nut is screwed onto the end of the outer shell away from the knife holder. A power supply anti-crack rubber sleeve is provided on the side of the outer shell near the nut. One end of the power supply anti-crack rubber sleeve extends into the interior of the outer shell.
[0006] As an improvement, the propeller body is a rigid helical spring, and the helical spring is designed to rotate left-hand.
[0007] As an improvement, the bearing structure consists of two parallel bearings, with the centers of the two bearings connected by a connecting shaft.
[0008] As an improvement, a dust cover is fitted on the telescopic impact rod, and one side of the dust cover is movably fitted onto the end of the outer shell.
[0009] The beneficial effects of this utility model are as follows:
[0010] This utility model of a semi-automatic electric rubber tapper features improved noise reduction compared to other electric rubber tappers. The bearing rotates without resistance, and the spring-driven lifting mechanism provides forward propulsion without retraction. A nut at the tail allows connection to a telescopic rod, enabling length adjustment. An angular bearing acts as a cooling fan for air convection. The rotary design of the current regulator facilitates adjustment. This electric rubber tapper is simple to operate and improves overall work efficiency. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0012] Figure 2 This is a schematic diagram of the operating structure of this utility model.
[0013] Appendix Label Reference Table:
[0014] 1. Tool holder; 2. Telescopic impact rod; 3. Dust cover; 4. Connecting rod; 5. Spring; 6. Guide retainer; 7. Bearing connector; 8. Bearing structure; 9. Propeller; 10. Eccentric counterweight; 11. Heat dissipation angular contact ball; 12. Core rod; 13. Cooling fan; 14. Motor; 15. Motor heat dissipation mounting plate; 16. Electric strip; 17. Current positioning speed controller; 18. Nut; 19. Power supply anti-crack rubber sleeve; 20. Current speed controller; 21. Housing. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] To address the technical problems in the background section, the following semi-automatic electric rubber cutting knife for rubber edge cutting is provided:
[0017] Combination Figures 1-2As shown, the semi-automatic electric rubber tapper provided by this utility model includes a housing 21 and an operating structure disposed inside the housing 21. The operating structure includes a motor 14, which is fixed inside the housing 21. A core rod 12 is provided at the power output end of the motor 14. A cooling fan 13 is sleeved on the core rod 12. A heat dissipation angular contact ball 11 is sleeved on the end of the core rod 12 away from the motor 14. An eccentric counterweight 10 is provided on the side of the heat dissipation angular contact ball 11 away from the cooling fan 13. A pusher 9 is provided on the side of the eccentric counterweight 10 away from the core rod 12. The thruster 9 body is a rigid helical spring with a left-handed design. A bearing structure 8 is placed at the end of the thruster 9 away from the eccentric counterweight 10. The bearing structure 8 consists of two parallel bearings connected at their centers by a connecting shaft. A bearing connector 7 is located on one side of the bearing structure 8. A guide retainer 6 is located at the end of the bearing connector 7 away from the bearing structure 8. A connecting rod 4 is located at the end of the guide retainer 6 away from the bearing connector 7. A spring 5 is movably sleeved on the connecting rod 4. A telescopic punch is located at the end of the connecting rod 4 away from the guide retainer 6. The telescopic impact rod 2 has one end extending out of the end of the outer shell 21. A dust cover 3 is fitted onto the telescopic impact rod 2, with one side of the dust cover 3 movably fitted onto the end of the outer shell 21. In actual use, the dust cover 3 can prevent adhesive from entering the telescopic impact rod 2. A knife holder 1 is fitted onto the telescopic impact rod 2. A motor heat dissipation fixing plate 15 is provided at the end of the motor 14 away from the cooling fan 13. An electric strip 16 is provided at the side of the motor heat dissipation fixing plate 15 away from the motor 14. A current regulator is provided at the end of the electric strip 16 away from the motor heat dissipation fixing plate 15. The position speed controller 17 and the electric bar 16 are provided with a current speed controller 20 at the end away from the motor heat dissipation fixing plate 15. The current speed controller 20 is located between the electric bar 16 and the current positioning speed controller 17. The current positioning speed controller 17 is provided with a nut 18 at the end away from the current speed controller 20. The nut 18 is screwed onto the end of the outer shell 21 away from the tool holder 1. In actual use, the nut 18 can be connected to the internal blade telescopic rod. The side of the outer shell 21 near the nut 18 is provided with a power supply anti-crack rubber sleeve 19, and one end of the power supply anti-crack rubber sleeve 19 extends into the interior of the outer shell 21.
[0018] Working principle and usage process of this utility model:
[0019] In use: Hold the rubber tapping knife, start the motor 14, and tap the tree through the knife holder 1. During this process, the motor rotation frequency can be controlled by the current speed controller 20.
[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A semi-automatic electric rubber cutting knife, characterized in that, The device includes a housing (21) and an operating structure disposed inside the housing (21). The operating structure includes a motor (14), which is fixed inside the housing (21). The motor (14) has a core rod (12) at its power output end. A cooling fan (13) is fitted onto the core rod (12). A heat dissipation angular contact ball (11) is fitted onto the end of the core rod (12) away from the motor (14). An eccentric counterweight (10) is provided on the side of the heat dissipation angular contact ball (11) away from the cooling fan (13). An eccentric counterweight (10) is provided with a pusher (9) on the side away from the column core rod (12). A bearing structure (8) is placed on the end of the pusher (9) away from the eccentric counterweight (10). A bearing connector (7) is provided on one side of the bearing structure (8). A guide fixing device (6) is provided on the end of the bearing connector (7) away from the bearing structure (8). A connecting rod (4) is provided on the end of the guide fixing device (6) away from the bearing connector (7). A spring (5) is movably sleeved on the body of the connecting rod (4). The connecting rod (4) is located away from the guide fixing device. One end of the stabilizer (6) is provided with a telescopic impact rod (2), one end of which extends out of the end of the outer shell (21). A knife holder (1) is fitted on the telescopic impact rod (2). The motor (14) is provided with a motor heat dissipation fixing plate (15) at the end away from the cooling fan (13). An electric strip (16) is provided on the side of the motor heat dissipation fixing plate (15) away from the motor (14). A current positioning speed regulator (17) is provided on the end of the electric strip (16) away from the motor heat dissipation fixing plate (15). A current speed controller (20) is provided at one end of the motor heat dissipation fixing plate (15), and the current speed controller (20) is located between the electric bar (16) and the current positioning speed controller (17). A nut (18) is provided at the end of the current positioning speed controller (17) away from the current speed controller (20), and the nut (18) is screwed onto the end of the outer shell (21) away from the tool holder (1). A power supply anti-crack rubber sleeve (19) is provided on the side of the outer shell (21) near the nut (18), and one end of the power supply anti-crack rubber sleeve (19) extends into the interior of the outer shell (21).
2. The semi-automatic electric rubber cutting knife according to claim 1, characterized in that, The propeller (9) body is a hard helical spring, and the helical spring is designed to rotate left.
3. The semi-automatic electric rubber cutting knife according to claim 1, characterized in that, The bearing structure (8) consists of two parallel bearings, and the centers of the two bearings are connected by a connecting shaft.
4. The semi-automatic electric rubber cutting knife according to claim 1, characterized in that, The telescopic impact rod (2) is fitted with a dust cover (3), and one side of the dust cover (3) is movably fitted onto the end of the outer shell (21).