A tobacco cutting apparatus, system and method with safety guard
By introducing components such as protective arms and push rods into tobacco cutting equipment, the cutting roller can move backward when it encounters an obstacle, thus solving the problem of operators' hands being injured by the cutting roller and ensuring safe production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA TOBACCO SHANDONG IND
- Filing Date
- 2024-05-24
- Publication Date
- 2026-05-15
AI Technical Summary
During the cigar tobacco cutting process, operators' hands are easily injured by the cutting rollers because they cannot keep up with the pace of the equipment, and existing technology lacks effective safety protection measures.
A tobacco leaf cutting device with a safety protection device was designed, including components such as a cutting roller, a protective arm, a drive rod, and a protective bracket. Through the coordinated movement of the protective arm and the push rod, the cutting roller moves backward when it encounters an obstacle, avoiding injury to the operator's hands. Through the coordination of the drive rod and the drive bracket, the cutting roller moves back and forth to complete the cutting.
It effectively protects the operator's hands, avoids injuries caused by equipment misoperation during the cutting process, and ensures safe production.
Smart Images
Figure CN118356020B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of tobacco leaf cutting technology, and in particular to a tobacco leaf cutting device, system and method with a safety protection device. Background Technology
[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.
[0003] Currently, the main method for cutting cigar tobacco leaves is roller cutting. When cutting cigar tobacco leaves, the operator needs to lay the tobacco leaves flat on the cutter. After laying them flat, the operator removes both hands from the cutting station, and the cutting arm drives the pressure roller to move horizontally. The pressure roller presses over the cutter with the tobacco leaves laid on it. The tobacco leaves are cut under the roller pressure of the pressure roller and the cutter. The cut tobacco leaves are then transferred out of the cutting station, and the operator takes new tobacco leaves and lays them flat on the cutter.
[0004] Because the cutting of tobacco leaves is a continuous process, it is easy for operators to fall behind the pace of the equipment. At this time, the operator's hands have not yet been removed from the cutting position, and the cutting arm has already driven the pressure roller to move horizontally to the cutting blade, which can easily cause injury to the operator's hands. Summary of the Invention
[0005] In order to solve the above problems, the present invention proposes a tobacco cutting device, system and method with a safety protection device, which can make the cutting roller move backward when the operator's hands are not removed from the cutting position, thereby protecting the operator's hands.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] In the first aspect, a tobacco leaf cutting device with a safety protection device is proposed, including a cutting roller and a protective arm. The protective arm is located in front of the cutting roller. The cutting roller is connected to a cutting link, the cutting link is hinged to the main arm, the protective arm is hinged to the protective link, the protective link is hinged to the forearm, and both the main arm and the forearm are connected to a power output shaft. The forearm can rotate with the power output shaft, and the main arm can rotate relative to the power output shaft. A drive rod is provided on the forearm, and the drive rod is in contact with a drive bracket. The drive bracket is rotatably connected to the main arm. The protective arm is also hinged to a push rod, the push rod is connected to the protective bracket, the protective bracket is rotatably connected to the cutting link, and the protective bracket is also in contact with the drive bracket.
[0008] When the drive rod rotates clockwise following the forearm, it can drive the upper arm to rotate clockwise through the drive bracket; when the protective arm drives the push rod to move backward, it can drive the cutting roller and cutting link to move backward and the protective bracket to rotate clockwise, thereby driving the drive bracket to rotate clockwise and disengaging the drive bracket from the drive rod.
[0009] Furthermore, a pressure block is installed on the forearm, which contacts the upper arm. When the forearm rotates counterclockwise, the pressure block can drive the upper arm to rotate counterclockwise.
[0010] Furthermore, the protective bracket is connected to the roller, and the roller is in contact with the drive bracket.
[0011] Furthermore, a first return spring is connected between the drive bracket and the boom.
[0012] Furthermore, the cutting roller is connected to the cutting link, and the cutting roller can rotate around its own axis.
[0013] Furthermore, the cutting roller includes a front pressure roller and a rear pressure roller; the cutting link includes a front cutting link and a rear cutting link; the front pressure roller is connected to the front cutting link, and the rear pressure roller is connected to the rear cutting link; both the front cutting link and the rear cutting link are hinged to the boom.
[0014] Furthermore, the front cutting link and the rear cutting link are connected to the protective link via tension springs.
[0015] Furthermore, a second return spring is connected between the protective bracket and the cutting link.
[0016] Secondly, a tobacco leaf cutting system with a safety protection device is proposed, including a tobacco leaf cutting device with a safety protection device.
[0017] Thirdly, a working method for a tobacco leaf cutting device with a safety protection device is proposed, including:
[0018] When cutting tobacco leaves, the power output shaft is controlled to rotate clockwise. The clockwise rotation of the power output shaft drives the forearm and drive rod to rotate clockwise, which in turn drives the drive bracket to rotate clockwise. Finally, the drive rod drives the upper arm to rotate clockwise, which drives the cutting roller to the tobacco leaf cutting position.
[0019] When the protective arm is obstructed, the protective arm drives the push rod to move backward, which in turn drives the cutting roller and cutting link to move backward and the protective bracket to rotate clockwise. The clockwise rotation of the protective bracket drives the drive bracket to rotate clockwise, disengaging the drive bracket from the drive rod.
[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0021] 1. By setting up a protective arm, push rod, protective bracket and drive bracket, the present invention can protect the operator's hands if the hands have not left the cutting position during the forward movement of the cutting roller. The protective arm will first contact the hands and move backward, thereby driving the cutting roller to move backward.
[0022] 2. By setting a drive rod and a drive bracket, the present invention can drive the upper arm to rotate clockwise through the forearm, thereby realizing the forward movement of the cutting roller; by setting a pressure block, the upper arm can be driven to rotate counterclockwise through the forearm, thereby realizing the backward movement of the cutting roller and realizing the cutting of tobacco leaves.
[0023] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.
[0025] Figure 1 This is a schematic diagram of the overall structure of the tobacco leaf cutting equipment as an example.
[0026] Figure 2 This is a schematic diagram of the installation structure of a tobacco leaf cutting device as an example.
[0027] Figure 3 This is a schematic diagram of the upper arm and forearm connection structure disclosed in the embodiment;
[0028] Figure 4 This is a schematic diagram of the connection structure between the drive rod and the drive bracket disclosed in the embodiment;
[0029] Figure 5 This is a schematic diagram of the connection structure between the push rod and the protective bracket disclosed in the embodiment;
[0030] Figure 6 This is a schematic diagram of the movement of the tobacco leaf cutting equipment disclosed in the embodiment;
[0031] Figure 7 This is a schematic diagram of the rearward movement of the protective arm disclosed in the embodiment;
[0032] Figure 8 This is a schematic diagram of the forearm squeezing the upper arm and rotating counterclockwise, as disclosed in the embodiment.
[0033] Figure 9 This is a schematic diagram of the cutting roller structure disclosed in the embodiment;
[0034] Figure 10 This is a schematic diagram of the tensioning spring connection structure disclosed in the embodiment;
[0035] Figure 11 This is a schematic diagram of the cutting blade structure disclosed in the embodiment.
[0036] The components are as follows: 1. Cutting roller, 2. Protective arm, 3. Push rod, 4. Protective connecting rod, 5. Motor, 6. Main arm, 7. Motor output shaft, 8. Forearm, 9. Fixed bracket, 10. Transmission pin, 11. Rear cutting connecting rod, 12. Protective bracket, 13. Front cutting connecting rod, 14. Cutter, 15. Guide rail, 16. Rear cutting edge of cutter, 17. Drive rod, 18. First rotating shaft, 19. Tensioning spring, 20. Second rotating shaft, 21. Bolt, 22. Roller, 23. Contact rod, 24. Third rotating shaft, 25. Pressure block, 26. Front pressure roller, 27. Rear pressure roller, 28. Front cutting edge of cutter, 29. Frame, 30. Tensioning spring. Detailed Implementation
[0037] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0038] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.
[0039] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0040] In this invention, terms such as "upper," "lower," "left," "right," "front," "back," "vertical," "horizontal," "side," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only to facilitate the description of the structural relationships of the various components or elements of this invention and do not specifically refer to any component or element in this invention. They should not be construed as limiting the invention.
[0041] In this invention, terms such as "fixed connection," "connected," and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can determine the specific meaning of these terms in this invention based on the specific circumstances, and they should not be construed as limitations on the invention.
[0042] Where there is no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.
[0043] Example 1
[0044] In this embodiment, a tobacco leaf cutting device with a safety protection device is disclosed, such as... Figures 1-11 As shown, the device includes a cutting roller 1 and a protective arm 2. The protective arm 2 is located in front of the cutting roller 1. The cutting roller 1 is connected to the cutting connecting rod, which is hinged to the upper arm 6. The protective arm 2 is hinged to the protective connecting rod 4, which is hinged to the lower arm 8. Both the upper arm 6 and the lower arm 8 are connected to the power output shaft. The lower arm 8 can rotate with the power output shaft, and the upper arm 6 can rotate relative to the power output shaft. A drive rod 17 is provided on the lower arm 8. The drive rod 17 is in contact with the drive bracket, which is connected to the upper arm 6 and can rotate around its own axis. The protective arm 2 is also hinged to the push rod 3, which is connected to the protective bracket 12. The protective bracket 12 is connected to the cutting connecting rod and can rotate around its own axis. The protective bracket 12 is also in contact with the drive bracket.
[0045] When the drive rod 17 rotates clockwise with the forearm 8, it can drive the upper arm 6 to rotate clockwise through the drive bracket; when the protective arm 2 drives the push rod 3 to move backward, it can drive the cutting roller 1 and the cutting link to move backward and the protective bracket 12 to rotate clockwise, thereby driving the drive bracket to rotate clockwise and disengaging the drive bracket from the drive rod 17.
[0046] Among them, push rod 3 is hinged to protective bracket 12.
[0047] The protective arm 2 is connected to the third rotating shaft 24, and the third rotating shaft 24 can rotate around its own axis. The protective link 4 is rotatably connected to the third rotating shaft 24, realizing the hinged connection between the protective arm 2 and the protective link 4.
[0048] The cutting roller 1 is connected to the cutting link, and the cutting roller 1 can rotate around its own axis.
[0049] This embodiment discloses a tobacco cutting device with a safety protection device. In use, it is installed on a frame 29 by a fixed bracket 9. A guide rail 15 is also provided on the frame 29. The lower part of the cutting roller 1 presses on the guide rail 15, and the upper part of the protective connecting rod 4 contacts the guide rail 15. Both the cutting roller 1 and the protective connecting rod 4 can move along the guide rail 15, thereby providing guidance for the horizontal movement of the cutting roller 1 and the protective connecting rod 4.
[0050] The tobacco leaves are placed on the cutter 14, and the tobacco leaves are cut by the cooperation of the cutting roller 1 and the cutter 14.
[0051] like Figure 11As shown, the cutter 14 is provided with a front cutting edge 28 and a rear cutting edge 16. Therefore, in order to effectively cooperate with the cutter 14, the cutting roller in this embodiment is set to include a front pressure roller 26 and a rear pressure roller 27; the cutting link includes a front cutting link 13 and a rear cutting link 11; the front pressure roller 26 is connected to the front cutting link 13 and can rotate around its own axis, the rear pressure roller 27 is connected to the rear cutting link 11 and can rotate around its own axis; both the front cutting link 13 and the rear cutting link 11 are hinged to the upper arm.
[0052] The cutting of tobacco leaves on the cutter is achieved by the cooperation of the front pressure roller 26 with the front cutting edge 28 of the cutter and the rear pressure roller 27 with the rear cutting edge 16 of the cutter.
[0053] In order to adjust the clamping force between the front pressure roller 26 and the front cutting edge 28 of the cutter, and between the rear pressure roller 27 and the rear cutting edge 16 of the cutter, this embodiment sets the front cutting link and the rear cutting link to the protective link through a tightening spring, respectively.
[0054] like Figure 10 As shown, the front cutting link is connected to the protective link via a tension spring 19, and the rear cutting link is connected to the protective link via a tension spring 30.
[0055] In this embodiment, the forearm is driven to rotate clockwise or counterclockwise via a power module. Preferably, the power module is a motor 5, which is a stepper motor capable of forward and reverse rotation with a certain rotation phase. The power output shaft corresponds to the motor output shaft 7. The upper arm 6 is loosely fitted onto the power output shaft, allowing it to rotate relative to the power output shaft. The forearm 8 is bolted to the power output shaft and can rotate with it. That is, when the motor 5 rotates, it can only drive the forearm 8 to rotate via the motor output shaft 7, but cannot drive the upper arm 6 to rotate.
[0056] To ensure that the forearm rotates clockwise and drives the upper arm to rotate clockwise as well, this embodiment includes a drive rod 17 on the forearm 8, which rotates with the forearm 8. A drive bracket is mounted on the upper arm 6, which rotates relative to the upper arm 6. The drive rod 17 is in contact with the drive bracket. When the drive rod 17 rotates clockwise with the forearm 8, it drives the drive bracket to rotate clockwise through contact with the drive bracket. Ultimately, the clockwise rotation of the drive bracket drives the upper arm 6 to rotate clockwise, which in turn drives the cutting roller 1 to move forward through the cutting linkage.
[0057] To protect the hands that are still in the cutting position during the forward movement of the cutting roller 1, a push rod 3 and a protective bracket 12 are provided. One end of the push rod 3 is hinged to the protective arm 2, and the other end is hinged to the protective bracket 12. The protective bracket 12 is connected to the cutting link and can rotate around its own axis relative to the cutting link. The protective bracket 12 is also connected to the roller 22, which is in contact with the drive bracket. When the hands are still in the cutting position, during the forward movement of the cutting roller 1, the protective arm 2 is blocked by the hands and moves backward. During the backward movement of the protective arm 2, the cutting roller 1 and the push rod 3 are pushed backward. The backward movement of the push rod 3 can drive the protective bracket 12 to rotate clockwise, which in turn drives the drive bracket to rotate clockwise through the roller 22. This causes the drive bracket to separate from the drive rod 17, preventing the forearm from rotating the upper arm. At the same time, the cutting roller 1 moves backward away from the hands, thus protecting the hands.
[0058] like Figure 4 As shown, the drive bracket includes a transmission pin 10 and a contact rod 23. The transmission pin 10 is in contact with the drive rod 17, and the contact rod 23 is in contact with the roller 22. Both the transmission pin 10 and the contact rod 23 are connected to the first rotating shaft 18 and can rotate with the first rotating shaft 18. The first rotating shaft 18 is connected to the upper arm 6 and can rotate around its own axis.
[0059] Preferably, the transmission pin 10 is fixed to the first rotating shaft 18 by bolts 21.
[0060] The roller is rotatably connected to the protective bracket 12.
[0061] The second rotating shaft 20 is connected to the cutting link and can rotate around its own axis. The protective bracket 12 is connected to the second rotating shaft 20 and can rotate with the second rotating shaft 20.
[0062] In order to return to contact with the drive rod after the drive bracket separates from the drive rod, this embodiment connects a first return spring between the drive bracket and the main arm, and a second return spring between the protective bracket and the cutting link. When the protective arm moves backward and the drive bracket separates from the drive rod, the first and second return springs are stretched. When the protective arm stops moving backward, the protective bracket returns to its original position under the action of the first and second return springs, and the drive bracket contacts the drive rod.
[0063] In order to enable the upper arm to rotate counterclockwise when the forearm rotates counterclockwise, this embodiment provides a pressure block 25 on the forearm 8. The pressure block 25 contacts the upper arm 6. When the forearm 8 rotates counterclockwise, the pressure block 25 can drive the upper arm 6 to rotate counterclockwise, which in turn drives the cutting roller 1 to move backward through the cutting linkage.
[0064] This embodiment discloses a tobacco leaf cutting device with a safety protection device. When cutting tobacco leaves, the control motor rotates clockwise, which drives the forearm to rotate clockwise through the motor output shaft. The forearm drives the drive rod to rotate clockwise, which drives the drive bracket to rotate clockwise. The drive bracket rotates clockwise, which drives the upper arm 6 to rotate clockwise. The upper arm 6 rotates clockwise, which drives the cutting connecting rod to move forward. Finally, the cutting connecting rod drives the cutting roller 1 to move forward, bringing the cutting roller close to the cutter to cut the tobacco leaf.
[0065] If the cutting roller 1 is blocked by objects such as hands during its forward movement, the protective arm 2 moves backward. During the backward movement of the protective arm 2, it simultaneously pushes the cutting roller 1 and the push rod 3 to move backward. The backward movement of the push rod 3 causes the protective bracket 12 to rotate clockwise, which in turn drives the drive bracket to rotate clockwise through the roller 22. This causes the drive bracket to separate from the drive rod 17, and the rotation of the forearm cannot drive the rotation of the upper arm. At the same time, the cutting roller 1 moves backward away from the hands, thus protecting the hands.
[0066] After the flue gas is cut, the motor rotates counterclockwise, which drives the forearm to rotate counterclockwise through the motor output shaft. The pressure block 25 squeezes the upper arm 6 to rotate counterclockwise, which in turn drives the cutting roller 1 to move backward and away from the cutter through the cutting linkage.
[0067] This embodiment discloses a tobacco leaf cutting device with a safety protection device. When the operator's hands have not yet withdrawn from the cutting position, even if the cutting arm moves to the position of the hands, the cutting arm will automatically spring back when touched. The cutting arm will automatically resume its function in the next movement cycle, ensuring the safety of the operator.
[0068] Example 2
[0069] In this embodiment, a tobacco leaf cutting system with a safety protection device is disclosed, including a tobacco leaf cutting device with a safety protection device.
[0070] Example 3
[0071] In this embodiment, a method for operating a tobacco leaf cutting device with a safety protection device is disclosed, including:
[0072] When cutting tobacco leaves, the power output shaft is controlled to rotate clockwise. The clockwise rotation of the power output shaft drives the forearm and drive rod to rotate clockwise, which in turn drives the drive bracket to rotate clockwise. Finally, the drive rod drives the upper arm to rotate clockwise, which drives the cutting roller to the tobacco leaf cutting position.
[0073] When the protective arm is obstructed, the protective arm drives the push rod to move backward, which in turn drives the cutting roller and cutting link to move backward and the protective bracket to rotate clockwise. The clockwise rotation of the protective bracket drives the drive bracket to rotate clockwise, disengaging the drive bracket from the drive rod.
[0074] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.
Claims
1. A tobacco leaf cutting device with a safety protection device, characterized in that, It includes a cutting roller and a protective arm. The protective arm is located in front of the cutting roller. The cutting roller is connected to the cutting link, the cutting link is hinged to the main arm, the protective arm is hinged to the protective link, and the protective link is hinged to the forearm. Both the main arm and the forearm are connected to the power output shaft. The forearm can rotate with the power output shaft, and the main arm can rotate relative to the power output shaft. A drive rod is set on the forearm. The drive rod is in contact with the drive bracket. The drive bracket is rotatably connected to the main arm. The protective arm is also hinged to a push rod. The push rod is connected to the protective bracket. The protective bracket is rotatably connected to the cutting link. The protective bracket is also in contact with the drive bracket. A pressure block is installed on the forearm, which contacts the upper arm. When the forearm rotates counterclockwise, the pressure block can drive the upper arm to rotate counterclockwise. A first return spring is connected between the drive bracket and the boom; When the drive rod rotates clockwise following the forearm, it can drive the upper arm to rotate clockwise through the drive bracket; when the protective arm drives the push rod to move backward, it can drive the cutting roller and cutting link to move backward and the protective bracket to rotate clockwise, thereby driving the drive bracket to rotate clockwise and disengaging the drive bracket from the drive rod.
2. The tobacco leaf cutting equipment with a safety protection device as described in claim 1, characterized in that, The protective bracket is connected to the roller, and the roller is in contact with the drive bracket.
3. The tobacco leaf cutting equipment with a safety protection device as described in claim 1, characterized in that, The cutting roller is connected to the cutting link, and the cutting roller can rotate around its own axis.
4. The tobacco leaf cutting equipment with a safety protection device as described in claim 1, characterized in that, The cutting roller includes a front pressure roller and a rear pressure roller; the cutting link includes a front cutting link and a rear cutting link; the front pressure roller is connected to the front cutting link, and the rear pressure roller is connected to the rear cutting link; both the front cutting link and the rear cutting link are hinged to the boom.
5. The tobacco leaf cutting equipment with a safety protection device as described in claim 1, characterized in that, The front cutting link and the rear cutting link are connected to the protective link via tension springs.
6. The tobacco leaf cutting equipment with a safety protection device as described in claim 1, characterized in that, A second return spring is connected between the protective bracket and the cutting link.
7. A tobacco leaf cutting system with a safety protection device, characterized in that, The invention includes a tobacco cutting device with a safety protection device as described in any one of claims 1-6.
8. A method of operating a tobacco leaf cutting device with a safety protection device as described in any one of claims 1-6, comprising: When cutting tobacco leaves, the power output shaft is controlled to rotate clockwise. The clockwise rotation of the power output shaft drives the forearm and drive rod to rotate clockwise, which in turn drives the drive bracket to rotate clockwise. Finally, the drive rod drives the upper arm to rotate clockwise, which drives the cutting roller to the tobacco leaf cutting position. When the protective arm is obstructed, the protective arm drives the push rod to move backward, which in turn drives the cutting roller and cutting link to move backward and the protective bracket to rotate clockwise. The clockwise rotation of the protective bracket drives the drive bracket to rotate clockwise, disengaging the drive bracket from the drive rod.