Intelligent weighing and pre-compressing machine for tobacco leaves with guide and limiting structure

Abstract

This utility model relates to the tobacco industry. Addressing the low efficiency and positioning difficulties in existing technologies due to the separation of tobacco weighing and pre-compression processes, and the challenges in positioning during chartered transport, it provides an intelligent integrated weighing and pre-compression machine for tobacco leaves with a guiding and limiting structure. The machine includes a frame and a weighing and pre-compression platform located below the frame. The entrance end of the weighing and pre-compression platform is equipped with a limiting accessory to restrict the movement of the chartered vehicle. Inside the weighing and pre-compression platform, at least two sets of conveying mechanisms are spaced apart along the direction of the chartered vehicle's movement. Each conveying mechanism includes a mounting frame fixedly installed on the weighing and pre-compression platform and multiple sets of guide wheels rotatably mounted on the mounting frame. The limiting accessory and the multiple conveying mechanisms work together to guide the chartered vehicle to a predetermined working position on the weighing and pre-compression platform. A lifting pre-compression mechanism and a weighing mechanism are used to complete the pre-compression and weighing of the material inside the chartered vehicle at the predetermined position. By constraining the chartered vehicle's trajectory, the weighing and pre-compression mechanisms are integrated into the same workstation, completing both weighing and preliminary pre-compression.

Description

Technical Field

[0001] This utility model relates to the tobacco industry, and in particular to an intelligent weighing and pre-compression machine for tobacco leaves with a guide and limiting structure. Background Technology

[0002] During the tobacco leaf baling process, tobacco leaves fresh from upstream processes are typically quite fluffy (referred to in the industry as "spoiled"). Directly loading them into the final baling box (cart) results in insufficient filling and looseness, which is detrimental to subsequent high-pressure baling operations. Existing technologies require multiple independent workstations and transfer steps, leading to lengthy and time-consuming processes. Independent weighing and pre-compressing equipment occupy more production line space, requiring manual intervention for transfers or equipment switching, resulting in low efficiency and safety risks. If the cart is not accurately positioned when the pre-compressing machine presses down, it can easily damage the cart or equipment. Therefore, an intelligent integrated weighing and pre-compressing machine for tobacco leaves with a guide and limiting structure is proposed. Utility Model Content

[0003] This utility model aims to provide an intelligent weighing and pre-compression integrated machine for tobacco leaves with a guide and limiting structure. By constraining the trajectory of the truck through the limiting and guiding structure, the weighing and pre-compression mechanisms are integrated into the same workstation to complete accurate weighing and preliminary pre-compression.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows: An intelligent weighing and pre-compressing machine for tobacco leaves with a guide and limiting structure includes a frame and a weighing and pre-compressing platform located below the frame. The entrance end of the weighing and pre-compressing platform is equipped with a limiting accessory for restricting the travel trajectory of the truck. Inside the weighing and pre-compressing platform, at least two sets of conveying mechanisms are spaced apart along the travel direction of the truck. Each set of conveying mechanisms includes a mounting frame fixedly installed on the weighing and pre-compressing platform and multiple sets of guide wheels rotatably mounted on the mounting frame. The limiting accessory and the multiple sets of conveying mechanisms work together to guide the truck to a predetermined working position on the weighing and pre-compressing platform. A lifting pre-compressing mechanism and a weighing mechanism are used to complete the pre-compressing and weighing of the tobacco leaf material inside the truck at the predetermined position.

[0005] Furthermore, the lifting preloading mechanism includes a preloading head installed above the frame, and a rack that cooperates with a gearbox is fixedly connected to the preloading head. The gearbox is driven by a motor to make the preloading head lift and lower.

[0006] Furthermore, the weighing mechanism includes a support rod, with multiple sets of support seats fixed to the bottom of the frame. Each set of support seats is equipped with a circular slide rail, and a slider is slidably connected to the circular slide rail. The slider is fixedly connected to the side wall of the weighing platform, so that the weighing platform can be raised and lowered smoothly. Multiple sets of weighing sensors are pressed on the top of the weighing platform, and the foot fixing plates of the weighing sensors are fixedly connected to the support platform. The two ends of the weighing platform are connected to the lifting frame through chains. When the lifting pre-compression mechanism drives the lifting frame to rise synchronously, the chains pull the weighing platform upward, and the vehicle is lifted through the foot fixing plates and the support platform, so that the weight pressure of the vehicle is transmitted to the weighing sensors to complete the measurement.

[0007] Furthermore, at least one of the multiple sets of guide wheels is provided with at least one one-way wheel, the one-way wheel is located on the side near the limiting accessory, and the remaining guide wheels are bearing wheels.

[0008] Furthermore, the limiting accessory is an uphill slope with a low gradient of 3.5-4 degrees, ensuring that the chartered vehicle smoothly slides to the weighing and preloading platform.

[0009] Furthermore, a guide tube is fixed to the upper surface of the limiting accessory, and the spacing of the guide tube matches the wheel track of the chartered vehicle, thereby restricting the chartered vehicle from rolling along the guide trajectory within a preset area.

[0010] Furthermore, the limiting accessory is installed on the bottom side of the frame via a buckle or other connecting structure.

[0011] Furthermore, the weighing preloading platform is also equipped with limiting round steel for locking the front wheels of the truck.

[0012] Furthermore, the weighing sensor is electrically connected to a weighing display device installed on the side wall of the frame.

[0013] Compared with the prior art, this utility model has the following advantages: Integrating the pre-compression and weighing processes into the same workstation effectively reduces personnel requirements and significantly improves operational efficiency. The low-slope inclined surface of the limiting accessory works in conjunction with the guide tube, limiting round steel, and one-way guide wheel to solve problems such as high trolley resistance, difficulty in positioning the trolley, and collisions with equipment, ensuring stable operation. The modular structural design allows each component from limiting, conveying to weighing and pre-compression to operate independently yet collaboratively, facilitating rapid maintenance and replacement of parts in the later stages, reducing maintenance costs and difficulties, and comprehensively optimizing the tobacco leaf processing flow. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main body of this utility model.

[0015] Figure 2 This is a partial schematic diagram of the present invention.

[0016] Figure 3 This is a schematic diagram of the second part of this utility model.

[0017] Figure 4 This is a cross-sectional schematic diagram of the present invention.

[0018] The following are the labels in the diagram: Frame 1, Weighing Preloading Platform 2, Limiting Accessory 3, One-Way Wheel 5, Guide Tube 7, Cargo 8, Mounting Frame 9, Lifting Preloading Mechanism 21, Weighing Sensor 101, Weighing Display 102, Scale Support 103, Chain 104, Landing Gear 105, Support Rod 106, Foot Mount 107, Support Platform 108, Support Base 109, Circular Slide Rail 110, Slider 111, Preloading Head 201, Gearbox 202, Rack 203, Motor 204. Detailed Implementation

[0019] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] like Figure 1-4 As shown, this utility model provides an intelligent weighing and pre-compressing integrated machine for tobacco leaves with a guide and limiting structure, including a frame 1 and a weighing and pre-compressing platform 2 disposed below the frame 1. The inlet end of the weighing and pre-compressing platform 2 is provided with a limiting auxiliary component 3 for limiting the travel trajectory of the truck 8. At least two sets of conveying mechanisms are arranged at intervals along the travel direction of the truck 8 inside the weighing and pre-compressing platform 2. Each set of conveying mechanisms includes a mounting frame 9 fixedly installed on the weighing and pre-compressing platform 2 and multiple sets of guide wheels rotatably disposed on the mounting frame 9. The limiting auxiliary component 3 and the multiple sets of conveying mechanisms work together to guide the truck 8 to a predetermined working position on the weighing and pre-compressing platform 2, and use a lifting pre-compressing mechanism 21 and a weighing mechanism to complete the pre-compressing and weighing of the tobacco leaf material inside the truck 8 at the predetermined position.

[0021] It mainly consists of a frame 1, a weighing and preloading platform 2, a limiting accessory 3, a conveying mechanism, a lifting preloading mechanism 21, and a weighing mechanism. The frame 1 serves as the main support, providing the installation foundation for other components. The weighing and pre-compressing platform 2 is located below the frame 1. The limiting auxiliary component 3 at the entrance of the frame 1 can restrict the travel trajectory of the truck 8, preventing the truck 8 from deviating from the predetermined route. The weighing and pre-compressing platform 2 is equipped with at least two sets of conveying mechanisms at intervals in the direction of travel of the truck 8. Each set includes a mounting frame 9 fixedly installed on the weighing and pre-compressing platform 2 and multiple sets of rotatable guide wheels, which can assist the truck 8 to move smoothly. The limiting auxiliary component 3 and the conveying mechanism cooperate with each other to guide the truck 8 to the predetermined working position on the weighing and pre-compressing platform 2. After reaching the predetermined position, the weighing mechanism first completes the weighing of the tobacco leaf material. Then, the lifting pre-compressing mechanism 21 can apply a relatively small pre-compressing pressure to the loose tobacco leaves in the truck 8 to initially compact the tobacco leaves, eliminate the "throwing" state, and facilitate subsequent filling and final packaging, thereby realizing the integrated and intelligent operation of tobacco leaf weighing and pre-compressing.

[0022] The lifting preloading mechanism 21 includes a preloading head 201 installed above the frame 1. A rack 203 that cooperates with a gearbox 202 is fixedly connected to the preloading head 201. The gearbox 202 is driven by a motor 204 to make the preloading head 201 lift and lower.

[0023] The lifting pre-compression mechanism 21 mainly consists of a pre-compression head 201 installed above the frame 1, a rack 203 fixedly connected to the pre-compression head 201, a gearbox 202, and a drive motor 204. The pre-compression head 201 above the frame 1 is the component that directly applies pressure to the tobacco material. The rack 203 fixedly connected to it can convert linear motion into rotational motion of the gearbox 202. The gearbox 202 is driven by the motor 204. When the motor 204 is running, it drives the gear inside the gearbox 202 to rotate. During the rotation of the gear, it meshes with the rack 203, thereby converting the rotational motion into the linear lifting motion of the pre-compression head 201. When the tobacco leaves in the truck need to be pre-compressed, the motor 204 drives the gearbox 202, which in turn drives the pre-compressing head 201 downward through the rack 203, applying pressure to the tobacco leaves to make them compact and achieve the pre-compressing effect. After the pre-compressing is completed, the motor 204 drives in the reverse direction, and the pre-compressing head 201 rises and resets under the transmission of the gear and rack 203, so as to perform the next operation. This realizes the automated control of the pre-compressing process of the tobacco leaves.

[0024] The weighing mechanism includes a support rod 106, with multiple sets of support seats 109 fixedly connected to the bottom of the frame 1. Each set of support seats 109 has a circular slide rail 110 installed inside, and a slider 111 is slidably connected to the circular slide rail 110. The slider 111 is fixedly connected to the side wall of the weighing support 103, and the slider 111 ensures that the weighing support 103 can be raised and lowered smoothly. Multiple sets of weighing sensors 101 are pressed on the top of the weighing support 103, and the foot fixing plate 107 of the weighing sensor 101 is fixedly connected to the support platform 108. The two ends of the weighing support 103 are connected to the landing gear 105 through chains 104. When the lifting pre-pressure mechanism 21 drives the landing gear 105 to rise synchronously, the chain 104 pulls the weighing support 103 to move upward, and the bag 8 is lifted through the foot fixing plate 107 and the support platform 108, so that the weight pressure of the bag 8 is transmitted to the weighing sensor 101 to complete the measurement.

[0025] The weighing mechanism uses a support rod 106 as its base support. Multiple support seats 109 are fixed to the bottom of the frame 1. A circular slide rail 110 installed in each support seat 109 slides in conjunction with a slider 111 fixed to the side wall of the weighing support 103. During the lifting and lowering of the weighing support 103, the slider 111 slides smoothly along the circular slide rail 110, effectively limiting the swaying of the weighing support 103 and ensuring stable and reliable lifting and lowering. Multiple load cells 101 are pressed onto the top of the weighing support 103. A foot fixing plate 107 is firmly connected to the support platform 108. When the lifting pre-pressing mechanism 21 drives the lifting frame 105 to rise, the taut chain 104 pulls the weighing support 103 upwards synchronously. The weighing support 103, through the foot fixing plate 107 and the support platform 108, steadily lifts the truck 8. The pressure generated by the weight of the truck 8 is directly transmitted to the load cells 101, thereby achieving the measurement of the tobacco material and ensuring the accuracy and stability of the weighing results.

[0026] At least one of the multiple sets of guide wheels is provided with at least one one-way wheel 5, the one-way wheel 5 is located on the side near the limiting auxiliary component 3, and the remaining guide wheels are bearing wheels.

[0027] The multiple guide wheels include at least one set of guide wheels with one-way wheels 5 and the remaining guide wheels using bearing wheels. At least one set of guide wheels has at least one one-way wheel 5 on the side near the limiting accessory 3. This one-way wheel 5 only allows the cart 8 to move in a predetermined direction, forming a directional motion constraint. The remaining guide wheels are bearing wheels, which, due to their low rolling friction, allow the cart 8 to move more smoothly and flexibly. The one-way wheels 5 and the bearing wheels cooperate with each other. The one-way wheels 5 restrict the direction of travel of the cart 8, preventing it from reversing, while the bearing wheels assist the cart 8 in moving smoothly on the weighing and pre-compression platform 2. This ensures that the cart 8 can accurately reach the predetermined working position under the coordinated action of the limiting accessory 3 and the conveying mechanism, providing a stable and reliable conveying guarantee for the subsequent weighing and pre-compression of tobacco materials.

[0028] The limiting accessory 3 is an uphill slope with a low gradient of 3.5-4 degrees to ensure that the vehicle 8 slides smoothly to the weighing pre-compression platform 2; the upper surface of the limiting accessory 3 is fixed with a guide tube 7, and the spacing of the guide tube 7 matches the wheel track of the vehicle 8, thereby restricting the vehicle 8 from rolling along the guide trajectory within the preset area; the limiting accessory 3 is set on the bottom side of the frame 1 through a buckle or other connecting structure.

[0029] The limiting accessory 3 is a crucial component for guiding the fully loaded tobacco cart 8 to its precise positioning in the intelligent tobacco weighing and pre-compressing machine. Its main body is an uphill ramp with a low slope of 3.5-4 degrees. This slope design ensures that operators can effortlessly and smoothly push the fully loaded tobacco cart 8 onto the weighing and pre-compressing platform 2, while preventing the tobacco from shifting or spilling during the push due to an excessively steep slope. The snap-fit ​​connection also significantly improves subsequent maintenance efficiency. Guide tubes 7 are welded to the upper surface of the limiting accessory 3, and the spacing of the guide tubes 7 matches the wheel track of the cart 8. When the cart 8 is pushed onto the uphill ramp, its wheels are confined between the two guide tubes 7, rolling forward along the tubes. Its core function is to ensure that the cart 8 smoothly enters the weighing and pre-compressing platform 2 in a straight line, effectively preventing the cart 8 from deviating during the push and colliding with the pre-compressing machine frame or other components, thus avoiding equipment damage caused by impact.

[0030] The weighing and preloading platform 2 is also equipped with a limiting round steel for locking the front wheels of the chartered vehicle 8.

[0031] Two parallel, spaced-apart limiting round steel bars are positioned within the working area of ​​the weighing preloading platform 22. The spacing between the two limiting round steel bars is designed to be slightly larger than the width of the front wheels of the trailer 8, allowing the front wheels of the trailer 8 to fit precisely between the two limiting round steel bars. Its core function is to prevent the trailer 8 from moving back and forth during the pressing process of the preloading head 201 when it is pushed to the working position, ensuring that the preloading head 201 is strictly aligned with the center of the trailer 8 during descent and operation. This avoids the significant safety hazard of the pressure head pressing on the edge of the trailer 8 or the vehicle body due to movement of the trailer 8, which could damage the trailer 8 or the equipment. It also prevents the trailer 8 from accidentally sliding backward off the platform.

[0032] The operation process of this utility model of intelligent weighing and pre-compressing integrated tobacco leaf weighing machine with guide and limiting structure is as follows: The truck 8 goes uphill from the limiting accessory 3 and enters the weighing and pre-compressing platform 22 along the preset trajectory under the restriction of the guide tube 7; multiple sets of guide wheels (including one-way wheels 5) in the platform cooperate to guide the truck 8 to the predetermined position; after the weighing mechanism completes the weight measurement of the truck 8 through the weighing sensor 101, the lifting pre-compressing mechanism 21 lowers the pre-compressed tobacco leaves. After the pre-compressing and weighing is completed, the lifting pre-compressing mechanism 21 rises and resets, and the truck 8 leaves the platform.

[0033] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An intelligent weighing and pre-compressing machine for tobacco leaves with a guide and limiting structure, comprising a frame (1) and a weighing and pre-compressing platform (2) disposed below the frame (1), characterized in that: The inlet end of the weighing preloading platform (2) is provided with a limiting accessory (3) for restricting the travel trajectory of the chartered vehicle (8); The weighing and preloading platform (2) is equipped with at least two sets of conveying mechanisms at intervals along the direction of travel of the chartered vehicle (8); Each of the conveying mechanisms includes a mounting frame (9) fixedly installed on the weighing preloading platform (2) and multiple sets of guide wheels rotatably mounted on the mounting frame (9); The limiting accessory (3) works in conjunction with multiple conveying mechanisms to guide the truck (8) to a predetermined working position on the weighing and pre-compression platform (2). The lifting pre-compression mechanism (21) and the weighing mechanism are used to pre-compress and weigh the tobacco material inside the truck (8) at the predetermined position.

2. The tobacco intelligent weighing and pre-pressing all-in-one machine with guide limiting structure according to claim 1, characterized in that: The lifting preloading mechanism (21) includes a preloading head (201) installed above the frame (1). A rack (203) that cooperates with the gearbox (202) is fixed on the preloading head (201). The gearbox (202) is driven by a motor (204) to make the preloading head (201) lift and lower.

3. The tobacco intelligent weighing and pre-pressing all-in-one machine with guide limiting structure according to claim 1, characterized in that: The weighing mechanism includes a support rod (106), and multiple sets of support seats (109) are fixedly connected to the bottom end of the frame (1). Each set of support seats (109) is equipped with a circular slide rail (110), and a slider (111) is slidably connected to the circular slide rail (110). The slider (111) is fixedly connected to the side wall of the weighing support (103) so that the weighing support (103) can be raised and lowered smoothly. Multiple sets of weighing sensors (101) are pressed on the top of the weighing support (103). The foot fixing plate (107) of 01) is fixedly connected to the support platform (108); the two ends of the weighing support (103) are connected to the landing gear (105) through the chain (104). When the lifting pre-pressure mechanism (21) drives the landing gear (105) to rise synchronously, the chain (104) pulls the weighing support (103) to move upward, and lifts the car (8) through the foot fixing plate (107) and the support platform (108), so that the weight pressure of the car (8) is transmitted to the weighing sensor (101) to complete the measurement.

4. The tobacco intelligent weighing and pre-pressing all-in-one machine with guide limiting structure according to claim 1, characterized in that: At least one of the multiple sets of guide wheels is provided with at least one one-way wheel (5), the one-way wheel (5) is located on the side close to the limiting auxiliary part (3), and the remaining guide wheels are bearing wheels.

5. The tobacco intelligent weighing and pre-pressing all-in-one machine with guide limiting structure according to claim 4, characterized in that: The limiting accessory (3) is an uphill plate with a low slope of 3.5-4 degrees to ensure that the chartered vehicle (8) slides smoothly to the weighing preloading platform (2).

6. The tobacco intelligent weighing and pre-pressing all-in-one machine with guide limiting structure according to claim 5, characterized in that: The upper surface of the limiting accessory (3) is fixed with a guide tube (7), and the spacing of the guide tube (7) matches the wheel track of the car (8), thereby restricting the car (8) from rolling along the guide track within the preset area.

7. The tobacco intelligent weighing and pre-pressing all-in-one machine with guide limiting structure according to claim 1, characterized in that: The limiting accessory (3) is set on the bottom side of the frame (1) by means of a buckle or connection structure.

8. The tobacco intelligent weighing and pre-pressing all-in-one machine with guide limiting structure according to claim 1, characterized in that: The weighing preloading platform (2) is also equipped with a limiting round steel for locking the front wheels of the car (8).

9. The tobacco intelligent weighing and pre-pressing all-in-one machine with guide limiting structure according to claim 3, characterized in that: The weighing sensor (101) is electrically connected to the weighing display (102) installed on the side wall of the frame (1).

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