Tobacco unpacking residue picking needling mechanism with locking and pushing functions

Abstract

The invention discloses a tobacco unpacking residue picking needling mechanism with locking and pushing functions, belongs to the technical field of tobacco equipment, and aims to solve the problems that tobacco unpacking residues are difficult to clean, the cleaning is unstable and low in reliability and the like. And the unpacking residues can be automatically cleared and unpacked. When the needling mechanism recycles residues, the locking structure controls the baffle to be unfolded through the air cylinder, and the residues are fixed. The pushing and placing structure controls a cross-shaped pushing plate through an air cylinder to complete residue scraping action, residues are placed into a recycling groove, and movement of one cycle is completed. By means of the pneumatic driving swing type locking mechanism and the movable pushing mechanism, dual promotion of specialization and automation of tobacco unpacking residue cleaning is achieved, then the working efficiency is improved, and application of the automation technology to an industrial production line is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of tobacco unpacking residue picking, in particular to a tobacco unpacking residue picking needle pricking mechanism with locking and pushing functions. Background Art

[0002] Unpacking is the first step in tobacco processing, disassembling tobacco leaves from their tightly compressed state, restoring their flexibility and integrity. This ensures uniformity during processes like shredding and baking, while also facilitating the removal of foreign matter, moldy leaves, and other impurities, ultimately improving the purity of the raw material.

[0003] According to tobacco industry practice, tobacco leaves are often wrapped in plastic film and then neatly packaged in cartons for storage and transportation. The current common method for unpacking tobacco leaves is to use machines to cut the packaging cartons and plastic film. This process easily produces paper scraps and plastic film of various shapes and sizes (i.e., unpacking residue). Traditional methods for cleaning unpacking residue rely on industrial machines equipped with needles to extract the residue. However, because existing needles rely solely on tiny static protrusions and friction to support the inserted residue and lack a strong dynamic locking mechanism, the stability and reliability of the extraction process are severely limited. This is evident in the fact that after extraction, the residue easily falls off the needles during the process of being removed to the recovery tank. Clearly, the scattered residue not only seriously pollutes the workshop environment, affecting the health and work experience of workers, but also leads to waste of raw materials and reduced production efficiency. In general, these existing tools are extremely limited in their functionality. They cannot simultaneously achieve the two critical functions of "fixing the residue" and "precisely transferring" the residue. Manual intervention is often required during machine extraction, which is both time-consuming and labor-intensive. In summary, the industry urgently needs an innovative, automated needling mechanism with integrated locking and pushing functions to effectively improve the cleaning effect of unpacking residues and meet the actual needs of production.

[0004] It can be seen that the development of a new tobacco leaf unpacking residue cleaning mechanism with the advantages of picking up, locking and full control can not only ensure the cleaning efficiency, but also significantly reduce manual intervention, achieve a dual improvement in production efficiency and product quality, and has important practical engineering value. Summary of the Invention

[0005] Aiming at the difficult problems of difficulty in cleaning tobacco unpacking residues, instability of machine cleaning and low reliability, the present invention proposes a tobacco unpacking residue picking and pricking mechanism with locking and pushing functions.

[0006] The tobacco leaf unpacking residue picking and needling mechanism capable of solving the above technical problems mainly includes a locking structure part and a pushing and releasing structure part, wherein:

[0007] 1. The ability of the tobacco leaf unpacking residue picking and needle pricking mechanism to clean residues mainly depends on the design of the locking structure, which mainly includes: cylinder 2, baffle, hinge, and position sensor. Due to the complex unpacking environment, the needle pricking is prone to shaking or being affected by external forces. The piston rod of cylinder 2 and one side of the baffle drive the hinged push rod to expand the baffle to form a "cross" structure, thereby firmly fixing the residues to prevent them from falling off and ensuring stable operation. In terms of mechanical structure design, one side of the baffle is fixed by a hinge. When the piston rod moves downward, the baffle is expanded horizontally (up to 90°) using the lever principle. When the piston rod moves to the preset position, the position sensor sends a signal to control cylinder 2 to lock, so that the baffle can fix the residues picked up by the needle pricking.

[0008] 2. The pushing and releasing structure of the tobacco leaf unpacking residue picking and needling mechanism described in claim 2 mainly includes a cylinder 1, a cross push plate, and a position sensor; two position sensors are installed on the outer wall of the needling mechanism, corresponding to the initial state position and the pushing and releasing end position of the cross push plate respectively; the piston rod is connected to the cross push plate mechanism, and the two realize synchronous movement, and the inner side of the cross push plate firmly adheres to the outer wall of the needling mechanism to ensure that the residue can be completely scraped off; when reaching the recovery tank, the cylinder 1 moves the cross push plate in the needling direction through the movement of the piston rod. When the piston rod moves to the preset position, the position sensor sends a signal to control the cylinder 1 to close, thereby realizing the "pushing and releasing" of the residue picked up by the needling by the cross push plate.

[0009] Working Principle and Process: The needling mechanism for picking up tobacco leaf unpacking residues utilizes a dual-cylinder coordinated control design, achieving efficient locking and release functions through precise mechanical linkage. The entire mechanism consists of cylinder one (cross push plate drive unit), cylinder two (baffle control unit), needling assembly, position sensor, and control system. The mechanism's motion process can be divided into three phases: contact, locking, and push-and-release. During the initial contact phase, the manipulator drives the puncture assembly downward vertically. When the tapered needle contacts the residue, the pressure feedback mechanism is triggered, removing the residue. During the locking and fixing phase, cylinder 2 drives the hinged push rod to deploy the baffle, forming a "cross" structure. When the piston rod reaches the position sensor (after the baffle is fully deployed), the piston rod is immediately locked, forming a rigid support structure that effectively resists axial disturbance forces and secures the residue. During the push-and-release recovery phase, after cylinder 2 releases its lock, cylinder 1 controls the movement of the cross-push plate. Driven by the piston rod, the cross-push plate assembly scrapes away the residue. When the piston rod reaches the preset position, the position sensor sends a signal, causing cylinder 1 to stop, completing the push-and-release process. After completing one cycle of recovery, cylinder 1 controls the cross-push plate to return to its initial state, preparing to resume the next cleaning cycle.

[0010] Beneficial effects of the present invention:

[0011] 1. Aiming at the residues generated by tobacco unpacking, the present invention proposes an automatic picking and cleaning tobacco unpacking residue picking and needling mechanism, which solves the prominent problems of low machine cleaning stability and low work efficiency for tobacco production enterprises.

[0012] 2. The present invention fixes the position of the residue through a locking mechanism, avoiding the problem of residue falling off caused by the "piercing and moving" of traditional tools, and improving the success rate of picking up.

[0013] 3. The present invention adopts a double-cylinder structure design. The double cylinders work closely together, and the unlocking and pushing functions can be performed simultaneously, which greatly improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view of the mechanism of an embodiment of the present invention.

[0015] Figure 2 It is a partial cross-sectional view of the connection between the baffle and the piston rod.

[0016] Figure 3 This is a top view of the cross push plate structure.

[0017] Figure 4 This is a bottom view of the baffle structure.

[0018] Figures 5 to 13 This is a schematic diagram of a workflow of the present invention, wherein: Figure 5 、 Figure 6 This is a schematic diagram of the action in stage 1. Figure 7 、 Figure 8 This is a schematic diagram of the second stage of action. Figures 9 to 13 Schematic diagram of the action in stage three

[0019] Figure 14 This is a schematic diagram of the pneumatic transmission control principle of the present invention.

[0020] Figure 15 This is the action sequence diagram of the electromagnetic reversing valve ("+" indicates power on, "-" indicates power off)

[0021] Figure number identification: 1. Needle puncture; 2. Baffle; 3. Cross push plate; 4. Position sensor 4; 5. Cylinder 2; 6. Position sensor 2; 7. Piston rod 1; 8. Position sensor 1; 9. Cylinder port 1; 10. Cylinder 1; 11. Cylinder port 2; 12. Cross push plate bracket; 13. Cylinder port 2; 14. Position sensor 3; 15. Piston rod 2; 16. Cylinder port 2; 17. Baffle rotating shaft; Indicates cutoff;←indicates air intake direction; Indicates the direction of piston rod movement. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described below with reference to the embodiments shown in the accompanying drawings.

[0023] The present invention provides a tobacco leaf unpacking residue picking and needling mechanism with locking and pushing functions, which comprises core components such as a cylinder, a baffle, a cross push plate and a position sensor.

[0024] Its workflow consists of three stages:

[0025] In the first stage, the manipulator drives the pricking mechanism to pierce the residue, and at the same time, the second air port 1 (13) of the cylinder takes in air, driving the piston rod 2 (15) to move. The end of the piston rod 2 (15) contacts one side of the baffle 2. The baffle 2 is fixed by the baffle rotating shaft (17), so that it can swing in the horizontal direction. When the piston rod 2 (15) moves to the preset position to trigger the position sensor 4 (4) (at this time, the baffle 2 is fully extended), the second air port 2 (16) of the cylinder is closed, so that the piston rod 2 (15) is locked, and the baffle (2) is also completely locked (in the shape of a "cross" when fully extended); the second air port 1 (13) of the cylinder is still continuously supplied with air, so that the baffle forms a stable support structure to ensure that the residue will not fall off midway, and effectively prevents the problem of insufficient support of the baffle due to air leakage in the cylinder;

[0026] In the second stage, when the manipulator drives the puncture mechanism to the recovery tank, air is introduced into the second air port 2 (16) of the cylinder, driving the piston rod 2 (15) to gradually retract the baffle (2) until it is completely retracted; subsequently, air is introduced into the first air port 1 (11) of the cylinder, driving the piston rod 1 (7) to move, and the end of the piston rod 1 (7) is connected to the cross push plate bracket (12), and the cross push plate bracket (12) drives the cross push plate (3) to move along the puncture (1) direction. During the movement, the cross push plate (3) gradually scrapes off the residue and pushes it to the recovery tank. When the piston rod 1 (7) moves to the preset position to trigger the position sensor 2 (6) (at this time, the cross push plate 3 moves to the end of the baffle 2), the air ports of the cylinder 1 and the cylinder 2 are all closed, and the entire device is in a "locked" state;

[0027] In the third stage, after completing the recovery task, air is taken in through the cylinder 1 air port 2 (11), and the piston rod 1 (7) moves in the opposite direction. When the piston rod 1 (7) moves to the preset position and triggers the position sensor 1 (8) (at this time, the cross push plate 3 returns to the initial state), the cylinder 1 and cylinder 2 air ports are all closed, completing a cycle of the work process.

Claims

1. A tobacco leaf unpacking residue picking and pricking mechanism with locking and pushing functions, characterized in that: The design includes a locking structure, which mainly includes: cylinder 2, baffle, baffle rotation axis, and position sensor. Cylinder 2 drives the articulated push rod to expand the double-sided baffles through the movement of the piston rod. When the piston rod reaches the position sensor (after the baffles are fully expanded), the piston rod position is immediately locked, forming a rigid support structure for the baffles. When the piston rod moves to the preset position, the position sensor triggers a control signal to stop cylinder 2, locking the baffles in place and ensuring that the residue remains stable and does not fall off during subsequent operations. The push-and-release structure mainly includes cylinder 1, a cross push plate, and a position sensor. Two position sensors are installed on the outer wall of the acupuncture mechanism, corresponding to the initial state position of the cross push plate and the end position of the push-and-release. The piston rod and the cross push plate mechanism maintain a synchronous linkage and operation, with the inner side of the cross push plate tightly attached to the outer wall of the acupuncture mechanism. When it reaches the recovery slot position, cylinder 1 drives the piston rod to move the cross push plate in the acupuncture direction. After the piston rod moves to the preset position, the position sensor triggers a signal to stop cylinder 1, completing the "push-and-release" action of the cross push plate.

2. According to the baffle (2) described in claim 1, when the baffle is fully retracted, its outer edge maintains a reasonable distance from the acupuncture needle (1), and the contours of the two are completely consistent and no interference occurs.

3. The baffle according to claim 1 is in a "cross" shape when fully unfolded, ensuring that the residue can be firmly fixed on top of the baffle.

4. The cross push plate according to claim 1 is in the shape of a cross when viewed from above, and the inner side of the cross push plate is in contact with the outer wall of the mechanism, and can scrape the residue to the end of the needling (1) when in motion.

5. The cleaning robot mechanism according to claim 1 to 4, its working principle and process are as follows: the tobacco leaf unpacking residue picking and pricking mechanism realizes efficient and automatic cleaning through a double-cylinder linkage mechanism, and its working process includes three stages: first, the manipulator drives the pricking assembly to move downward in the vertical direction. When the conical needle tip contacts the residue, the system realizes precise pricking through pressure sensor feedback. Cylinder 2 drives the connecting rod mechanism to unfold the double-side baffles (2). After the position sensor (4) detects that it is fully unfolded, it triggers the locking device, so that the baffles form a stable support structure, effectively preventing the residue from falling off due to mechanical vibration or airflow; then, when it reaches the recovery tank, cylinder 2 (5) releases the lock and gradually retracts the baffle (2); finally, the piston rod (7) of cylinder 1 pushes the cross push plate (3) to scrape the residue off the pricking surface, completing the unpacking residue cleaning. After completing a single cycle, the cross push plate (3) automatically resets, and the mechanism enters the next working cycle, realizing continuous automatic operation.

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