Double-connecting-rod cutting knife assembly and cutting knife mechanism thereof

Abstract

The utility model discloses a double-connecting-rod cutting knife mechanism, and relates to the field of automatic rubber tapping machines. Comprising a knife rest, a rubber tapping knife, a guide block, an elastic stretching piece and an elastic piece, a knife rest guide strip column hole is formed in the knife rest, and a knife rest guide shaft is movably installed in the knife rest guide strip column hole; a fixing hole and fork arms are further formed in the knife rest, the guide block is movably installed between the fork arms through the elastic piece, and the rubber tapping knife is installed on the guide block; one end of the elastic stretching piece is connected with a swing arm, and the other end is connected with the knife rest. The circuit control system controls the driving device to drive the elastic stretching piece through the swing arm to drive the rubber tapping knife on the knife rest to do rubber tapping and retracting actions, and the swing arm is matched with a double-connecting-rod linkage structure of the elastic stretching piece, so that the feeding / retracting actions of the scheme are more accurate; therefore, the rubber tapping efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of automatic rubber tapping machines, in particular to a double-link cutting knife assembly and a cutting knife mechanism thereof. Background Art

[0002] The automatic rubber tapping machine is a machine that acts on trees that can produce rubber and automatically taps them. When tapping rubber, the existing automatic rubber tapping machine will be damaged when encountering trees with uneven outer diameters. The main problem is caused by the cutting knife mechanism.

[0003] After testing, the existing cutting knife mechanism has the following defects:

[0004] 1. Because the cutter mechanism cannot achieve the adaptive function, the rubber cutting knife is difficult to operate when encountering trees with uneven outer diameters. If it is forced to operate, the rubber cutting may not be in place at best, or the entire cutter mechanism may be damaged. Therefore, the existing cutter mechanism has a short service life and low rubber cutting efficiency;

[0005] 2. The existing cutting knife mechanism adopts a cam structure to drive the advance / retract of the tapping knife to achieve the function of approaching or moving away from the tree epidermis. However, the advance / retract accuracy of the tapping knife driven by the cam structure is poor, which affects the tapping efficiency. Utility Model Content

[0006] The purpose of this application is to provide a technical solution to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, this application provides the following technical solutions:

[0008] A double-link cutting knife assembly comprises a knife holder, a rubber cutting knife, a guide block, an elastic stretching member, and an elastic member. The knife holder is provided with a knife holder guide bar column hole, and a knife holder guide shaft is movably mounted in the knife holder guide bar column hole; and the knife holder is also formed with a fixing hole and a fork arm, the guide block is movably mounted between the fork arms through the elastic member, and the rubber cutting knife is mounted on the guide block; one end of the elastic stretching member is connected to a swing arm and the other end is connected to the knife holder.

[0009] Preferably, the guide block is integrally formed with a guide block shaft at the top and bottom, and the fork arms are respectively formed with fork arm shaft holes adapted to the guide block shaft, and the guide block shaft is rotated through the fork arm shaft holes to pass through the fork arms.

[0010] Preferably, the elastic member is a torsion spring, the guide block is provided with a guide block torsion spring mounting protrusion, the fork arm is provided with a fork arm torsion spring mounting protrusion, the torsion spring is sleeved on the guide block rotating shaft, one end of which is connected to the guide block torsion spring mounting protrusion, and the other end is connected to the fork arm torsion spring mounting protrusion.

[0011] Preferably, at least one guide protrusion is formed on the guide block side, and the rubber tapping knife is installed on the guide block behind the guide protrusion along the axis line.

[0012] Preferably, the plane area of ​​the guide block is larger than the plane area of ​​the guide block shaft.

[0013] Preferably, the rubber tapping knife further comprises a knife pressing block, and the knife pressing block fastens the rubber tapping knife to the guide block via screws.

[0014] A double-link cutting knife mechanism also includes a base, a circuit control system, a driving device, and a fixing part. The side of the base is provided with a tool holder assembly mounting groove, the middle is provided with at least one guide sleeve rod mounting position, and at least one screw rod mounting position. The tool holder guide shaft passes through the tool holder assembly mounting groove and the tool holder guide bar column hole respectively to rotate the tool holder and penetrate the side of the base; the fixing part passes through the fixing hole to fix the tool holder on the side of the base; the swing arm is installed on the side of the base through the tool holder assembly mounting groove, and the circuit control system controls the driving device to drive the elastic stretching member through the swing arm to drive the tool holder to reciprocate.

[0015] Preferably, the positions of the tool holder assembly mounting slot, the tool holder, the elastic stretching member and the swing arm are all at the same level.

[0016] Preferably, the elastic stretching member is a tension spring.

[0017] Preferably, the circuit control system is provided with at least two sensors.

[0018] In summary, the technical effects and advantages of the utility model are:

[0019] 1. After the cutting knife mechanism is installed on the automatic rubber tapping machine through at least one guide sleeve rod installation position and at least one screw rod installation position, the circuit control system controls the driving device to drive the elastic stretching member through the swing arm to drive the rubber tapping knife on the knife holder to perform the rubber tapping advance action; when encountering trees with uneven outer diameters, after the guide block first contacts the uneven trees, the elastic member cooperates with the guide block rotating shaft to drive the guide block to perform adaptive rotation between the fork arms, and the double fork arm structure reserves adaptive rotation space for the guide block, thereby completing the full-scale rubber tapping of trees with uneven outer diameters with the rubber tapping knife, thereby improving the rubber tapping efficiency; furthermore, the technical solution avoids the damage to the cutting knife mechanism caused by trees with uneven outer diameters during rubber tapping, thereby improving the service life of the product.

[0020] 2. After the rubber tapping is completed, the circuit control system controls the driving device to drive the elastic stretching member through the swing arm to drive the rubber tapping knife on the knife holder to perform the rubber tapping and retracting action. The swing arm cooperates with the double-link linkage structure of the elastic stretching member, which can make the advance / retract action of this scheme more accurate; therefore, the efficiency of rubber tapping is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a three-dimensional diagram of the whole structure of the utility model.

[0023] Figure 2 It is a bottom view of the explosion structure of the utility model.

[0024] Figure 3 This is an enlarged structural diagram of the double-link cutting knife assembly of the utility model.

[0025] Numbers in the figure: 1 tool holder; 11 tool holder guide bar column hole; 12 fixing hole; 13 fork arm; 131 fork arm shaft hole; 132 fork arm torsion spring mounting protrusion; 2 rubber cutting knife; 21 knife pressure block; 22 screw; 3 guide block; 31 guide block shaft; 32 guide block torsion spring mounting protrusion; 33 guide protrusion; 4 elastic stretching member; 41 swing arm; 5 elastic member; 6 tool holder guide shaft; 7 base; 71 tool holder assembly mounting groove; 72 at least one guide sleeve rod mounting position; 73 at least one screw rod mounting position; 8 circuit control system; 81 sensor; 9 drive device; 10 fixing member. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-Figure 3A double-link cutting knife assembly includes a knife holder 1, a rubber cutting knife 2, a guide block 3, an elastic stretching member 4, and an elastic member 5. The knife holder 1 is provided with a knife holder guide bar column hole 11, and the knife holder guide bar column hole 11 is movably mounted with a knife holder guide shaft 6; and the knife holder 1 is also formed with a fixing hole 12 and a fork arm 13, and the guide block 3 is movably mounted between the fork arms 13 through the elastic member 5, and the fork arm 13 is specifically a double fork arm or a multi-fork arm, and its specific structure is a split assembly molding or an integral molding; the rubber cutting knife 2 is installed on the guide block 3, and one end of the elastic stretching member 4 is connected to the knife holder 2. The guide block 3 is integrally formed with a guide block rotating shaft 31 at the top and bottom, and the fork arms 13 are respectively formed with fork arm rotating shaft holes 131 adapted to the guide block rotating shaft 31, and the guide block rotating shaft 31 rotates the guide block 3 through the fork arm rotating shaft hole 131 and is arranged between the fork arms 13. The elastic member 5 is a torsion spring, the guide block 3 is provided with a guide block torsion spring mounting protrusion 32, the tool holder 1 is provided with a tool holder torsion spring mounting protrusion 132, and the torsion spring is sleeved on the guide block rotating shaft 31, one end of which is connected to the guide block torsion spring mounting protrusion 32, and the other end is connected to the fork arm torsion spring mounting protrusion 132.

[0028] A double-link cutting mechanism also includes a base 7, a circuit control system 8, a driving device 9, and a fixing member 10. A knife holder assembly mounting groove 71 is provided on the side of the base 7. The knife holder guide shaft 6 passes through the knife holder assembly mounting groove 71 and the knife holder guide bar hole 11 respectively to rotate the knife holder 1 and pass through the side of the base 7. The fixing member 7 passes through the fixing hole 12 to fix the knife holder 2 on the side of the base 7 to prevent it from shaking up and down during rubber tapping. The swing arm 41 is installed on the side of the base 7 through the knife holder assembly mounting groove 71. The circuit control system 8 controls the driving device 9 to drive the elastic stretching member 4 through the swing arm 41 to drive the knife holder 2 to reciprocate. The positions of the knife holder assembly mounting groove 71, the knife holder 2, the elastic stretching member 4, and the swing arm 41 are all at the same level. The base 7 also has at least one guide sleeve mounting position 72 and at least one screw mounting position 73.

[0029] Furthermore, the elastic stretching member 4 is a tension spring, and the driving device 9 is a motor.

[0030] Furthermore, at least one guide protrusion 33 is formed on the side of the guide block 3, and the rubber tapping knife 2 is installed on the guide block 3 behind the guide protrusion 33 along the axis. As shown in the figure, the guide protrusion 31 is a knife tip-like structure, and the guide block 3 imitates the rubber tapping knife 2 to first contact the tree to be tapped when tapping rubber, thereby playing a guiding role.

[0031] Furthermore, the planar area of ​​the guide block 3 when viewed from above is larger than the planar area of ​​the guide block shaft 31, so that the rubber tapping knife 2 installed on the guide block 3 can be farther away from the fork arm 13 or the guide block shaft 31, which can effectively avoid the chip blockage problem caused by the close distance between the two during rubber tapping.

[0032] Furthermore, the rubber tapping knife 2 also includes a knife pressing block 21, and the knife pressing block 21 fastens the rubber tapping knife 2 to the guide block 3 through a screw 22. The knife pressing block 21 has the functions of fastening the rubber tapping knife 3 to the guide block 3 and effectively preventing debris from entering the rubber tapping knife to cause chip blockage.

[0033] Furthermore, the circuit control system 8 is provided with at least two position sensors 81 at an angle of 180°, which are a sensor 81 for tool feeding and a sensor 81 for tool retracting.

[0034] The working principle of the utility model is as follows: after the cutting knife mechanism is installed on the automatic rubber tapping machine through at least one guide sleeve rod installation position and at least one screw rod installation position 72, the circuit control system 8 controls the driving device 9 to drive the elastic stretching member 4 through the swing arm 41 to drive the rubber tapping knife 2 on the knife holder 1 to perform rubber tapping advance action; when encountering trees with uneven outer diameters, the guide block 3 first contacts the uneven trees, and the elastic member 5 cooperates with the guide block rotating shaft 31 to drive the guide block 3 to perform adaptive rotation between the fork arms 13, and the double fork arm 13 structure reserves adaptive rotation space for the guide block 3, thereby completing the rubber tapping of trees with uneven outer diameters with the rubber tapping knife 3. The technical solution avoids the damage to the cutting knife mechanism caused by trees with uneven outer diameters during rubber tapping, thereby increasing the service life of the product. After the rubber tapping is completed, the circuit control system 8 controls the driving device 9 to drive the elastic stretching member 4 through the swing arm 41 to drive the rubber tapping knife 2 on the knife holder 1 to perform the rubber tapping and retracting action. The swing arm 41 cooperates with the double-link linkage structure of the elastic stretching member 4 to make the advance / retract action of the present scheme more accurate; therefore, the efficiency of rubber tapping is improved.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-link cutting knife assembly, characterized in that: The utility model comprises a tool holder, a rubber tapping knife, a guide block, an elastic stretching member and an elastic member. The tool holder is provided with a tool holder guide bar column hole, and a tool holder guide shaft is movably installed in the tool holder guide bar column hole; and the tool holder is also formed with a fixing hole and a fork arm, and the guide block is movably installed between the fork arms through the elastic member, and the rubber tapping knife is installed on the guide block; one end of the elastic stretching member is connected to a swing arm and the other end is connected to the tool holder.

2. A double-link cutting knife assembly according to claim 1, characterized in that: The guide block is integrally formed with a guide block shaft at the top and bottom, and the fork arms are respectively formed with fork arm shaft holes adapted to the guide block shaft. The guide block shaft is rotated through the fork arm shaft holes to pass through the fork arms.

3. A double-link cutting knife assembly according to claim 2, characterized in that: The elastic member is a torsion spring, the guide block is provided with a guide block torsion spring mounting protrusion, the fork arm is provided with a fork arm torsion spring mounting protrusion, the torsion spring is sleeved on the guide block rotating shaft, one end of which is connected to the guide block torsion spring mounting protrusion, and the other end is connected to the fork arm torsion spring mounting protrusion.

4. A double-link cutting knife assembly according to claim 2, characterized in that: At least one guide protrusion is formed on the guide block side, and the rubber tapping knife is installed on the guide block behind the guide protrusion along the axis line.

5. A double-link cutting knife assembly according to claim 4, characterized in that: The plane area of ​​the guide block is larger than the plane area of ​​the guide block rotating shaft.

6. A double-link cutting knife assembly according to claim 1, characterized in that: The rubber tapping knife also includes a knife pressing block, and the knife pressing block fastens the rubber tapping knife to the guide block through screws.

7. A double-link cutting knife mechanism, comprising a double-link cutting knife assembly according to any one of claims 1 to 6, characterized in that: It also includes a base, a circuit control system, a driving device, and a fixing part. The side of the base is provided with a tool holder assembly mounting groove, the middle is provided with at least one guide sleeve mounting position and at least one screw mounting position, the tool holder guide shaft passes through the tool holder assembly mounting groove and the tool holder guide bar column hole respectively to rotate the tool holder and penetrate the side of the base; the fixing part passes through the fixing hole to fix the tool holder on the side of the base; the swing arm is installed on the side of the base through the tool holder assembly mounting groove, and the circuit control system controls the driving device to drive the elastic stretching member through the swing arm to drive the tool holder to reciprocate.

8. A double-link cutting knife mechanism according to claim 7, characterized in that: The positions of the tool holder assembly installation slot, the tool holder, the elastic stretching member, and the swing arm are all at the same level.

9. A double-link cutting mechanism according to claim 7, characterized in that: The elastic stretching member is a tension spring.

10. A double-link cutting mechanism according to claim 7, characterized in that: The circuit control system is provided with at least two sensors.

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