Tobacco leaf packing machine with protection function

Abstract

The utility model relates to a tobacco baling press with protection function has effectively solved the problem that baling press protection exists detection blind area and reliability is insufficient, the technical scheme that solves includes frame, storage tank and pressure plate and detection unit, and detection unit includes the connecting plate located pressure plate top and with pressure plate alignment, and pressure plate is fixedly connected with the connecting plate through a connecting column, and four top corners of connecting plate each fixedly has a downward vertical rod, and the lower end of vertical rod is lower than pressure plate, and vertical rod all are located the outside of storage tank, and the lower end of each vertical rod all fixedly has a first laser transmitter and a first laser receiver, and the first laser transmitter on any vertical rod all face the first laser receiver on the clockwise side vertical rod of it, and the laser interruption received by any first laser receiver, all will be first hydraulic cylinder brake, the utility model has no detection blind area, and through double hedge action, effectively avoid the occurrence of the accident.

Description

Technical Field

[0001] This utility model relates to the field of baling machines, specifically a tobacco leaf baling machine with protective functions. Background Technology

[0002] To facilitate transportation and storage, tobacco leaves are compressed into regular rectangular blocks using a baling machine. A utility model patent with application number CN202323651694.9 discloses a tobacco baling machine with a safety protection device. This machine has light curtain emitters installed on both sides of the box door to detect arms or foreign objects that extend into the box during the baling process. Upon detection of a foreign object, it triggers an alarm and brakes in time to prevent accidents. However, the detection range of this patent is limited to both sides of the box door, resulting in a large blind spot and a high risk of missed detections. Furthermore, relying solely on a hydraulic brake cylinder for safety is problematic; if the pressure plate is very close to the box, there may not be enough time for complete braking, thus requiring improved reliability. Summary of the Invention

[0003] This utility model provides a tobacco leaf baling machine with protective function, aiming to solve the problems of blind spots and insufficient reliability in the protection of baling machines.

[0004] The technical solution includes a frame, a storage box, a pressure plate, and a detection unit. The storage box is an open-top box installed at the bottom of the frame. The pressure plate is rectangular and installed on the top of the frame, directly above the storage box. A vertical first hydraulic cylinder is connected above the pressure plate. The detection unit includes a connecting plate located above and aligned with the pressure plate. The pressure plate is fixedly connected to the connecting plate via a connecting column. The first hydraulic cylinder is connected to the upper part of the connecting plate. The connecting plate is larger than the pressure plate. Each of the four corners of the connecting plate has a downward-pointing vertical rod. The lower end of the vertical rod is lower than the pressure plate, and all the vertical rods are located outside the storage box. Each vertical rod has a first laser emitter and a first laser receiver fixed at its lower end. The first laser emitter on any vertical rod faces the first laser receiver on the clockwise side of the vertical rod. If the laser received by any first laser receiver is interrupted, the first hydraulic cylinder will brake.

[0005] The monitoring unit also includes four second laser emitters and four second laser receivers. The four second laser emitters are installed one-to-one at the lower end of the four vertical rods, and all the second laser emitters are vertically downward. The four second laser emitters are distributed in a rectangle at the bottom of the frame, and each receives the laser from the four second laser emitters. If the laser signal received by any second laser receiver is interrupted, the first hydraulic cylinder will be braked.

[0006] The storage tank is equipped with a vertical second hydraulic cylinder at its lower end. Under normal operating conditions, the second hydraulic cylinder supports the storage tank in a pressure-holding state. If the laser signal received by any laser receiver is interrupted, the second hydraulic cylinder will be depressurized while braking the first hydraulic cylinder.

[0007] The frame includes a base plate, a top plate, and several vertical columns. The columns connect the base plate and the top plate. The second hydraulic cylinder is fixed on the base plate, and the first hydraulic cylinder is fixed on the top plate.

[0008] Several sliding sleeves are fixed on the outer wall of the storage box, and the sliding sleeves are slidably mounted on the column.

[0009] This invention utilizes a laser frame composed of a first laser emitter and a second laser emitter to supplement the blind spot, enabling the detection of foreign objects at any height below the pressure plate during the pressing process, eliminating blind spots. Furthermore, through the dual avoidance actions of braking by the first hydraulic cylinder and depressurizing by the second hydraulic cylinder, accidents are effectively prevented. Attached Figure Description

[0010] Figure 1 This is the front view of the present invention.

[0011] Figure 2 This is a perspective view of the present invention.

[0012] Figure 3 This is a perspective view of the present invention with the pressure plate pressed into the storage box.

[0013] Figure 4 This is a perspective view of the present invention when the detection unit detects a foreign object.

[0014] Figure 5 for Figure 2 A magnified view of position A in the middle. Detailed Implementation

[0015] Referring to the accompanying drawings, this utility model includes a frame 1, a storage box 2, a pressing plate 3, and a detection unit. The storage box 2 is a box with an open top and is installed at the lower part of the frame 1. The pressing plate 3 is rectangular and is installed at the upper part of the frame 1, directly above the storage box 2. A vertical first hydraulic cylinder 4 is connected above the pressing plate 3. The tobacco leaves to be packaged are placed in the storage box 2, and the pressing plate 3 is pressed into the storage box 2 by the action of the first hydraulic cylinder 4 to compress the tobacco leaves.

[0016] The detection unit includes a connecting plate 5 located above and aligned with the pressure plate 3. The pressure plate 3 is fixedly connected to the connecting plate 5 via a connecting column 6. A first hydraulic cylinder 4 is connected to the upper end of the connecting plate 5. The first hydraulic cylinder 4 pushes the pressure plate 3 downward through the connecting plate 5 and the connecting column 6. The connecting plate 5 is larger than the pressure plate 3. A downward vertical rod 7 is fixed at each of the four corners of the connecting plate 5. The lower end of the vertical rod 7 is lower than the pressure plate 3, and the vertical rod 7 is located outside the storage box 2. When the pressure plate 3 is pressed into the storage box 2, the vertical rod 7 does not interfere with the storage box 2. A first laser emitter 8 and a first laser receiver 9 are fixed at the lower end of each vertical rod 7. The first laser emitter 8 on any vertical rod 7 is directed toward the first laser receiver 9 on the clockwise side of the vertical rod 7. If the laser received by any first laser receiver 9 is interrupted, the first hydraulic cylinder 4 will be braked.

[0017] Four first laser emitters 8 form a rectangular laser frame. When the connecting plate 5 moves down, the pressure plate 3 at the lower end of the vertical rod 7 reaches the opening of the storage box 2 first. If a worker's arm or other foreign object is inserted into the storage box 2 at this time, the light of at least one first laser emitter 8 will be blocked by the arm or foreign object, causing the corresponding first laser receiver 9 to not receive the laser signal. Then, the controller will brake the first hydraulic cylinder 4 in time to stop the pressure plate 3 from pressing down.

[0018] The monitoring unit also includes four second laser emitters 10 and four second laser receivers 11. The four second laser emitters 10 are installed one-to-one at the lower end of the four vertical rods 7, and all the second laser emitters 10 are vertically downward. The four second laser emitters 10 are distributed in a rectangle at the bottom of the frame 1, and each receives the laser from the four second laser emitters 10. If the laser signal received by any second laser receiver 11 is interrupted, the first hydraulic cylinder 4 will be braked. The second laser emitters 10 are set up because there is a monitoring blind zone directly below the four vertical rods 7 of the first laser emitter 8, that is, at the four top corners of the storage box 2. The second laser emitters 10 can detect arms or foreign objects that extend into the storage box 2 from the four top corners of the storage box 2.

[0019] The storage tank is equipped with a vertical second hydraulic cylinder 12 at its lower end. Under normal operating conditions, the second hydraulic cylinder 12 supports the storage tank 2 in a pressure-holding state. If the laser signal received by any laser receiver is interrupted, the second hydraulic cylinder 12 will be depressurized while braking the first hydraulic cylinder 4, thereby causing the storage tank 2 to move downward under its own weight and the gravity of the material inside, as a second-level protection measure.

[0020] The frame 1 includes a base plate 13, a top plate 14 and several vertical columns 15. The columns 15 connect the base plate 13 and the top plate 14. The second hydraulic cylinder 12 is fixed on the base plate 13 and the first hydraulic cylinder 4 is fixed on the top plate 14.

[0021] Several sliding sleeves 16 are fixed on the outer wall of the storage box 2. The sliding sleeves 16 are slidably mounted on the column 15 to guide and limit the storage box 2.

[0022] In use, the tobacco leaves to be packaged are loaded into the storage box 2. The first hydraulic cylinder 4 is activated to push the detection unit and the pressing plate 3 downward. Since the lower end of the vertical rod 7 is lower than the pressing plate 3, the lower end of the vertical rod 7 reaches the height of the opening of the storage box 2 before the pressing plate 3. That is to say, the laser frame composed of the four first laser emitters 8 will reach the opening of the storage box 2 before the pressing plate 3. If an arm or foreign object is inserted into the storage box 2 from the opening, when the laser frame touches the arm or foreign object during the pressing of the pressing plate 3, the laser of at least one first laser emitter 8 will be blocked by the arm or foreign object and cannot be received by the corresponding first laser receiver 9. At any moment when the pressing plate 3 is pressing down, if the laser signal received by any first laser receiver 9 or any second laser receiver 11 is interrupted, the controller will brake the first hydraulic cylinder 4 and release the pressure of the second hydraulic cylinder 12. While stopping the pressing plate 3 from pressing down, the storage box 2 will move downward to avoid the pressure. Under the protection of the double avoidance action, the accident can be effectively avoided.

[0023] The laser receiver controlling the hydraulic cylinder's movement via a PLC controller is existing technology and will not be described in detail in this application.

[0024] This invention can detect foreign objects at any height below the pressure plate 3 during the pressing process, with no blind spots. It also effectively avoids accidents through the dual avoidance actions of braking by the first hydraulic cylinder 4 and depressurizing by the second hydraulic cylinder 12.

Claims

1. A tobacco leaf baling machine with protective function, comprising a frame (1), a storage box (2), a pressing plate (3), and a detection unit, wherein the storage box (2) is a box with an open top, the storage box (2) is installed at the lower part of the frame (1), the pressing plate (3) is rectangular and is installed at the upper part of the frame (1) directly above the storage box (2), and a vertical first hydraulic cylinder (4) is connected above the pressing plate (3); characterized in that, The detection unit includes a connecting plate (5) located above and aligned with the pressure plate (3). The pressure plate (3) is fixedly connected to the connecting plate (5) via a connecting column (6). A first hydraulic cylinder (4) is connected to the upper end of the connecting plate (5). The connecting plate (5) is larger than the pressure plate (3). A downward vertical rod (7) is fixed at each of the four corners of the connecting plate (5). The lower end of the vertical rod (7) is lower than the pressure plate (3), and the vertical rod (7) is located outside the storage box (2). A first laser emitter (8) and a first laser receiver (9) are fixed at the lower end of each vertical rod (7). The first laser emitter (8) on any vertical rod (7) is directed toward the first laser receiver (9) on the clockwise side of the vertical rod (7). If the laser received by any first laser receiver (9) is interrupted, the first hydraulic cylinder (4) will brake.

2. The tobacco leaf baling machine with protective function according to claim 1, characterized in that, The detection unit also includes four second laser emitters (10) and four second laser receivers (11). The four second laser emitters (10) are installed one-to-one at the lower end of the four vertical rods (7), and the second laser emitters (10) are all vertically downward. The four second laser emitters (10) are arranged in a rectangular shape at the bottom of the frame (1) and receive the lasers from the four second laser emitters (10) one-to-one. If the laser signal received by any second laser receiver (11) is interrupted, the first hydraulic cylinder (4) will be braked.

3. A tobacco leaf baling machine with protective function according to claim 1 or 2, characterized in that, The storage tank is provided with a vertical second hydraulic cylinder (12) at the lower end. Under normal working conditions, the second hydraulic cylinder (12) supports the storage tank (2) in a pressure-holding state. If the laser signal received by any laser receiver is interrupted, the second hydraulic cylinder (12) will be depressurized at the same time as braking the first hydraulic cylinder (4).

4. A tobacco leaf baling machine with protective function according to claim 1, characterized in that, The frame (1) includes a base plate (13), a top plate (14) and several vertical columns (15), which connect the base plate (13) and the top plate (14).

5. A tobacco leaf baling machine with protective function according to claim 4, characterized in that, The storage box (2) has several sliding sleeves (16) fixed on its outer wall, and the sliding sleeves (16) are slidably mounted on the column (15).

Images