A SQ21X cut tobacco machine shaft balance type pushing plate

Abstract

The utility model relates to tobacco equipment machinery technical field especially, a kind of SQ21X tobacco cutter shaft balance formula pusher plate, including pusher frame, pusher frame, pusher plate, counterweight and elastic locking mechanism;The utility model is through the collaborative design of counterweight and mandrel, so that the center of gravity of pusher plate is accurately located on hinged axis, when maintenance, pusher plate is automatically rotated to be horizontal with ground under the action of gravity, its lowest point height is promoted to above 1.9m from original 1.2m, operator need not bend to enter, avoid head and body knock hidden danger;Through the arc surface self-locking of compression spring drive positioning latch and latch sleeve, when locking state, spring pre-tightening force pushes tapered latch to embed latch sleeve, form anti-vibration inclined plane cooperation;When needing to unlock operation, by single hand down pull handle, make connecting rod move down, drive spring compression, latch tripping, tool is not needed in whole process, operation efficiency is fast and easy to maintain.

Description

Technical Field

[0001] This utility model relates to the field of tobacco equipment and machinery technology, and in particular to a shaft-pull balanced pusher plate for an SQ21X shredder. Background Technology

[0002] In tobacco processing production lines, the feeding system of the shredder is divided into two structures: horizontal and vertical. The SQ21X shredder uses a vertical feeding method, where the tobacco leaves are pushed between the upper and lower chains for compression via the reciprocating oscillation of the pusher plate. However, this equipment requires the pusher plate to be opened to provide operating space during maintenance or repair. The existing technology has the following key drawbacks: Due to its hinged structure design, the pusher plate can only open to a maximum angle of about 60°. This results in the pusher plate being tilted to the ground after unfolding, with its lowest point less than 1.2 meters above the ground. Operators must bend over or stoop to enter this space to work, which greatly increases the risk of head or body collisions and poses a serious safety hazard. Furthermore, the pusher plate has no self-balancing device when it is open, and it is prone to swinging or wobbling due to gravity, requiring manual fixation, which further increases the operational risk.

[0003] Existing pneumatic pusher plate unfolding devices use cylinders to drive the connecting rod to change length to increase the unloading space. However, these devices require air circuits, solenoid valves, and control units, resulting in complex structures and high failure rates. Furthermore, while they shorten the unloading time, the pusher plate remains tilted after unfolding, and the vertical height of the operating space is not increased. Additionally, pneumatic components are prone to clogging and failure in tobacco dust environments, increasing the maintenance burden.

[0004] Therefore, the existing feeding device of the SQ21X shredder has inherent defects in terms of safety and ease of operation. There is an urgent need for a mechanical solution that is simple in structure, requires no external power, and can achieve horizontal unfolding of the feeding plate, so as to completely eliminate safety hazards during maintenance. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, such as the unstable connection structure between the brush body and the roller shaft, the difficulty in disassembling the mounting screws and the brush body, and the functional limitations, this utility model provides an SQ21X shredder shaft-pull balanced push plate, including: a push plate frame, a pusher frame, a push plate, a counterweight, and an elastic locking mechanism. Through the combined action of mechanical counterweight and elastic locking mechanism, the push plate can be automatically unfolded to a horizontal state during maintenance.

[0006] One end of the pusher frame is hinged to the middle of the pusher frame, and a pusher plate matching its contour is provided on one side of the pusher frame. The counterweight is located at one end of the pusher frame. The elastic locking mechanism is used to allow the pusher frame to rotate freely around the hinge axis and to achieve horizontal balance of the pusher plate by the gravity of the counterweight; the elastic locking mechanism includes: A connecting rod that is slidably connected along the length of the pusher is used to transmit axial operating force to switch the locking state. The positioning pin is set at one end of the connecting rod, and the pin sleeve is set at the other end of the push plate frame. The positioning pin is used to achieve rigid locking through the engagement of the pin and the pin sleeve. The counterweight has a cavity for the connecting rod to pass through. The cavity contains a compression spring and a limiting block. One end of the compression spring is connected to one end of the cavity, and the other end is connected to the limiting block. The compression spring is sleeved on the outside of the connecting rod, and the limiting block is connected to a positioning pin.

[0007] By converting the pressure of the compression spring into the locking force of the pin, it ensures a stable and vibration-resistant locked state, while also providing an automatic reset force for the potentiometric pin; Preferably, the pusher frame has a U-shaped structure, with a spindle at each end of its open side, and bearing seats that cooperate with the spindles on both sides of the middle part of the pusher frame, which are used to make the center of gravity of the pusher plate on the central axis of the two spindles through the counterweight. Preferably, a limiting rod is provided above the opening side of the pusher frame to limit excessive rotation of the pusher plate.

[0008] Preferably, the end of the positioning pin that contacts the pin sleeve is an arc-shaped surface, and the pin sleeve is provided with a matching pin hole for forming a self-locking structure through the arc-shaped inclined surface.

[0009] Preferably, a connecting rod sleeve is also fixedly provided on the pusher frame, and the connecting rod is slidably disposed inside the connecting rod sleeve to limit the radial displacement of the connecting rod.

[0010] Preferably, the pusher plate has a J-shaped cross-section and a slot in the middle for venting, which is used to efficiently push the tobacco material and discharge the compressed air, thus preventing the material from becoming fluffy.

[0011] Preferably, the other end of the linkage is also provided with a handle for single-handed operation of pressing down the linkage to achieve one-button unlocking.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes the coordinated design of the counterweight and spindle to precisely position the center of gravity of the pusher plate on the hinge axis. During maintenance, the pusher plate automatically rotates to a horizontal position under gravity, raising its lowest point height from 1.2 meters to over 1.9 meters. This eliminates the need for operators to bend over, avoiding the risk of head and body collisions. A compression spring drives the positioning pin and pin sleeve to self-lock on their arc-shaped surfaces. In the locked state, the spring preload pushes the conical pin into the pin sleeve, forming a vibration-resistant inclined surface fit. To unlock, a single-handed pull of the handle lowers the connecting rod, compressing the spring and disengaging the pin. The entire process requires no tools. The operation is efficient, and the purely mechanical structure reduces the failure rate and maintenance costs. It is suitable for tobacco dust environments and easy to maintain. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the connection relationship between the push plate frame and the pusher frame in this utility model; Figure 3 This is a schematic diagram of the push plate frame in this utility model; Figure 4 This is a schematic diagram of the pusher frame in this utility model; Figure 5 This is a cross-sectional view of the counterweight block in this utility model; Figure 6 This is a schematic diagram showing the unlocked state of the positioning pin and the pin sleeve in this utility model.

[0014] In the diagram: 1. Push plate frame; 2. Pusher frame; 3. Pusher plate; 4. Counterweight; 41. Cavity; 42. Compression spring; 43. Limiting block; 51. Connecting rod; 52. Positioning pin; 53. Pin sleeve; 6. Mandrel; 7. Bearing seat; 8. Limiting rod; 9. Pin hole; 10. Connecting rod sleeve; 11. Handle. Detailed Implementation

[0015] The feeding methods of the shredder are divided into vertical feeding (leaf shredder) and horizontal feeding (stem shredder). The pushing device of the vertical feeding system mainly consists of a motor reducer, an eccentric wheel transmission device, a linkage mechanism, a pushing plate, and a material level detection device. The motor reducer drives the eccentric wheel, which in turn drives the pushing plate to swing through the linkage mechanism. During the falling process, the incoming material is gradually pre-compressed by the forward swing of the pushing plate and is pushed into the upper and lower copper busbar inlets by the pushing plate. This is existing technology and will not be considered as an improvement in this technical solution. Therefore, only the principle is introduced without further elaboration.

[0016] When a plate needs to be changed or production ends, the operator needs to unload the copper busbar chain of the wire cutter. This requires first climbing onto the moving platform, manually loosening the locking handles of the connecting rod and the swing arm to separate them, then hanging the pusher plate swing arm on the hanging rod before performing the copper busbar unloading operation. When production begins, the pusher plate swing arm must again be removed from the hanging rod, the connecting rod's traction latch must be engaged with the swing arm, and then the locking handle must be tightened. Manually separating and connecting the pusher device from a height is not only time-consuming and labor-intensive but also poses safety hazards and has low operational efficiency.

[0017] like Figures 1 to 6 As shown, this utility model provides a mechanical solution that is simple in structure, requires no external power, and can realize the horizontal unfolding of the pusher plate, so as to completely eliminate safety hazards during maintenance. A shaft-pull balanced pusher plate for an SQ21X shredder includes: Push plate frame 1, pusher frame 2, pusher plate 3, counterweight block 4, and elastic locking mechanism; One end of the pusher frame 1 is hinged to the middle of the pusher frame 2. The pusher frame 2 has a pusher plate 3 on one side that matches its contour. The pusher plate 3 has a J-shaped cross section and a slot for venting in the middle. The counterweight 4 is located at one end of the pusher frame 2; The pusher frame 1 has a U-shaped structure, with a spindle 6 at each end of its open side. The pusher frame 2 has bearing seats 7 on both sides of its middle part that cooperate with the spindle 6. A limiting rod 8 is also provided above the open side of the pusher frame 1. The elastic locking mechanism includes: The connecting rod 51 is slidably connected along the length of the pusher 2; A positioning pin 52 is provided at one end of the connecting rod 51, and a handle 11 is provided at the other end of the connecting rod 51; The pin sleeve 53 is located at the other end of the push plate frame 1; The counterweight 4 has a cavity 41 for the connecting rod 51 to pass through. The cavity 41 has a compression spring 42 and a limiting block 43. One end of the compression spring 42 is connected to one end of the cavity 41 and the other end is connected to the limiting block 43. The compression spring 42 is sleeved on the outside of the connecting rod 51. The limiting block 43 is connected to the positioning pin 52. The end of the positioning pin 52 that contacts the pin sleeve 53 is an arc-shaped surface, and the pin sleeve 53 is provided with a matching pin hole 9; The pusher frame 2 is also fixedly provided with a connecting rod sleeve 10. The connecting rod 51 passes through and slides inside the connecting rod sleeve 10, restricting the radial displacement of the connecting rod 51. In this embodiment, the connecting rod 51 is a metal round rod that passes through the connecting rod sleeve 10 and the counterweight 4, is parallel to the pusher plate 3, and moves parallel to its axis.

[0018] The working principle of this embodiment is as follows: When the compression spring 42 is in its naturally extended state, it pushes the limiting block 43 and the positioning pin 52 fixed thereon to move toward the pin sleeve 53; the arc-shaped inclined surface of the positioning pin 52 is embedded in the matching tapered hole of the pin sleeve 53 to form a self-locking fit. At this time, the pusher plate 3 is rigidly connected to the pusher frame 1; The pusher frame 1 and the pusher plate 3 are driven to swing back and forth synchronously by the linkage 51 mechanism, pushing the tobacco leaves into the upper and lower copper busbar chains to complete the pushing operation. When maintenance is required, the operator pulls the handle 11 down with one hand, and the linkage 51 moves downward along the axis, compressing the spring 42 to store energy. The positioning pin 52 moves down with the linkage 51 and disengages from the conical hole of the pin sleeve 53, releasing the rigid lock. After unlocking, the pusher plate 3 rotates around the spindle 6 under the action of the gravity torque of the counterweight 4 until it is horizontal with respect to the ground, providing sufficient vertical operating space. When the maintenance is completed and reset is required, press down the bottom of the pusher plate 3 to rotate it to the working angle. The positioning pin 52 automatically inserts into the pin hole 9 of the pin sleeve 53 through the arc surface. The compression spring 42 is compressed and reset to complete the locking.

[0019] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the description above. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A shaft-pull balanced pusher plate (3) for an SQ21X shredder, characterized in that, include: Push plate frame (1), pusher frame (2), pusher plate (3), counterweight (4) and elastic locking mechanism; One end of the pusher frame (1) is hinged to the middle of the pusher frame (2), and a pusher plate (3) matching its outline is provided on one side of the pusher frame (2). The counterweight (4) is located at one end of the pusher frame (2). The elastic locking mechanism includes: The connecting rod (51) is slidably connected along the length of the pusher (2); A positioning pin (52) is set at one end of the connecting rod (51), and a pin sleeve (53) is set at the other end of the push plate frame (1). The counterweight (4) has a cavity (41) for the connecting rod (51) to pass through. The cavity (41) has a compression spring (42) and a limiting block (43). One end of the compression spring (42) is connected to one end of the cavity (41), and the other end is connected to the limiting block (43). The compression spring (42) is sleeved on the outside of the connecting rod (51), and the limiting block (43) is connected to the positioning pin (52).

2. The shaft-pull balanced pusher plate (3) of the SQ21X shredder according to claim 1, characterized in that: The pusher frame (1) has a U-shaped structure, with a spindle (6) at each end of its open side, and bearing seats (7) that cooperate with the spindle (6) are provided on both sides of the middle part of the pusher frame (2).

3. The shaft-pull balanced pusher plate (3) of the SQ21X shredder according to claim 2, characterized in that: A limiting rod (8) is also provided above the opening side of the push plate frame (1).

4. The shaft-pull balanced pusher plate (3) of the SQ21X shredder according to claim 1, characterized in that: The end of the positioning pin (52) that contacts the pin sleeve (53) is an arc-shaped surface, and the pin sleeve (53) is provided with a matching pin hole (9).

5. The shaft-pull balanced pusher plate (3) of the SQ21X shredder according to claim 1, characterized in that: The pusher frame (2) is also fixedly provided with a connecting rod sleeve (10), and the connecting rod (51) is slidably disposed inside the connecting rod sleeve (10).

6. The shaft-pull balanced pusher plate (3) of the SQ21X shredder according to claim 1, characterized in that: The pusher plate (3) has a J-shaped cross section and a slot for venting in the middle.

7. The shaft-pull balanced pusher plate (3) of the SQ21X shredder according to claim 6, characterized in that: The other end of the connecting rod (51) is also provided with a handle (11).

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