Pre-weighing platform for tobacco leaf grading

Abstract

According to the pre-weighing platform for tobacco leaf grading, a sound-light alarm lamp is installed above a grading table, and an access door is installed on the front side of a box body. According to the pre-weighing platform for tobacco leaf grading, through cooperation of the sound-light alarm lamp, the weight sensor and the weight sensor receiving and transmitting device, when the color of the sound-light alarm lamp is green, an operator takes out tobacco leaves in a tobacco basket, places the tobacco leaves on the grading platform and then carries out grading operation on the next basket, and through the color of the sound-light alarm lamp, the operator can conveniently observe the tobacco leaves; eye fatigue of operators can be relieved, so that specialized grading efficiency can be improved, tobacco baling efficiency is improved, and grade purity of tobacco in tobacco bales can be greatly improved. A worm gear rotates to drive a swing rod to rotate, so that a cylinder is driven to slide along the inner wall of the swing rod, and the cylinder moves to drive a vertical rod to move upwards. The height of the bearing plate can be adjusted according to the height of an operator, the operator does not need to frequently stoop, and the operator is not prone to being overtired.

Description

Technical Field

[0001] This utility model relates to the field of tobacco leaf purchasing technology, and in particular to a pre-weighing platform for tobacco leaf grading. Background Technology

[0002] In the tobacco leaf purchasing process, professional grading is of paramount importance. Its main purpose is to improve the purity of the grade of tobacco leaves in a single basket, laying the foundation for subsequent grading and bale grading. In the actual professional grading process, due to the different weights and qualities of the tobacco bundles to be graded, there are large differences in weight and quality between baskets. When the weight of tobacco leaves in a basket is too small, multiple baskets of tobacco leaves will be combined into one bale during bale grading, which seriously affects the bale grading speed and the purity of the tobacco leaves in the bale.

[0003] For example, an automatic tobacco leaf grading and weighing device with announcement number "CN212325369U" allows for tobacco leaf grading and sorting by simply placing the receiving box on the roller slide and activating the cylinder to slowly push the roller slide back and forth. When the graded tobacco leaves fall into the receiving box, the weight sensor can weigh the tobacco leaves in a timely manner. When the tobacco leaves in the receiving box reach the predetermined weight, the full box can be removed and replaced with an empty box. During the tobacco leaf collection process, the slow back and forth pushing of the cylinder prevents local accumulation of tobacco leaves, ensuring that the tobacco leaves can fill the receiving box without the need for manual weighing again. However, this automatic tobacco leaf grading and weighing device lacks a reminder function during weighing, requiring operators to constantly monitor the display screen. This can easily lead to eye fatigue, take a long time to complete the tobacco leaf grading operation, and is prone to misoperation, resulting in inaccurate tobacco leaf weight and reduced purity when the tobacco leaves are bales. Furthermore, the height of the receiving box cannot be adjusted, requiring operators to frequently bend over when picking up and placing the receiving box, which can easily lead to operator fatigue. Summary of the Invention

[0004] This utility model aims to solve the problems existing in the prior art by providing a pre-weighing platform for tobacco leaf grading. With the sound and light alarm function, it is easy for operators to observe, thereby improving the efficiency of professional grading, the purity of tobacco leaves in the tobacco bales, and the efficiency of tobacco leaf bale formation. The lifting and lowering of the load-bearing plate reduces the excessive fatigue of operators.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: This pre-weighing platform for tobacco leaf grading includes a base plate and a grading table. The grading table is fixedly connected to the upper left side of the base plate, and a box is fixedly connected to the upper right side of the base plate. An adjustment mechanism is provided inside the box, a load-bearing plate is provided on the upper part of the box, a weight sensor is installed at the bottom of the load-bearing plate, a weight sensor transceiver device is installed on the front side of the grading table, an audible and visual alarm light is installed on the upper part of the grading table, and an inspection door is installed on the front side of the box.

[0006] To further improve the mechanism, the adjustment mechanism includes a servo motor. A worm gear is fixedly connected to the end of the output shaft of the servo motor. Both sides of the worm gear are rotatably connected to the housing and the fixed plate respectively through bearings. The outer wall of the fixed plate is fixedly connected to the housing. The outer wall of the worm gear meshes with two worm wheels. Both sides of the worm wheel drive shaft are rotatably connected to the housing through bearings. A rocker arm is fixedly connected to the outer wall of each worm wheel drive shaft. The inner wall of each rocker arm is slidably connected to a cylinder. The outer side of each cylinder is fixedly connected to a vertical rod. The outer wall of each vertical rod is slidably connected to the housing.

[0007] As a further improvement, the servo motor is mounted on the inner wall of the housing via a bracket.

[0008] Further improvements include fixing the upper ends of all vertical rods to the load-bearing plates.

[0009] In a further improvement, the weight sensor transceiver is electrically connected to the audible and visual alarm light and the weight sensor via a wire.

[0010] The beneficial effects of this utility model are as follows: This utility model, through the cooperation of an audible and visual alarm light, a weight sensor, and a weight sensor transceiver, places a tobacco basket containing tobacco leaves on a load-bearing plate. The weight sensor transceiver receives the signal from the weight sensor and simultaneously issues a command, triggering an audible and visual alarm. When the alarm light is red, the weight of the tobacco leaves in the basket is unqualified, and the operator adds or removes an appropriate amount. When the alarm light is green, the operator removes the tobacco leaves from the basket and places them on a grading table before proceeding to the next basket for grading. The color of the alarm light facilitates observation by the operator, which to some extent alleviates eye fatigue, thereby improving the efficiency of professional grading, increasing the efficiency of tobacco leaf bale formation, and significantly improving the purity of the tobacco leaves within the bales.

[0011] Through the cooperation of the load-bearing plate and the adjustment mechanism, the servo motor output shaft rotates forward, driving the worm gear to rotate, which in turn drives the two worm wheels to rotate. The rotation of the worm wheels drives the swing arm to rotate, which in turn drives the cylinder to slide along the inner wall of the swing arm. The movement of the cylinder drives the vertical rod to move upward, so that the height of the load-bearing plate can be adjusted according to the height of the operator. This way, when the operator picks up and puts down the cigarette basket, there is no need for the operator to frequently bend over, which will not easily cause the operator to become overly tired. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 for Figure 1 A front sectional view;

[0014] Figure 3 for Figure 2 Front sectional view of A in the middle;

[0015] Figure 4 for Figure 2 A partial right-side sectional view;

[0016] Figure 5 A three-dimensional schematic diagram of the connection between the worm and the worm wheel;

[0017] Figure 6 for Figure 2 A partial top sectional view.

[0018] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Adjustment mechanism; 201. Servo motor; 202. Worm gear; 203. Worm wheel; 204. Swing arm; 205. Cylinder; 206. Vertical rod; 207. Fixing plate; 3. Housing; 4. Load-bearing plate; 5. Weight sensor; 6. Audible and visual alarm light; 7. Weight sensor transceiver device; 8. Grading platform; 9. Inspection door. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] See attached document Figure 1-6In this embodiment, a pre-weighing platform for tobacco leaf grading includes a base plate 1 and a grading table 8. The grading table 8 is fixedly connected to the upper left side of the base plate 1, and a box 3 is fixedly connected to the upper right side of the base plate 1. An adjustment mechanism 2 is provided inside the box 3. A load-bearing plate 4 is provided on the upper part of the box 3, and a weight sensor 5 is installed at the bottom of the load-bearing plate 4. A weight sensor transceiver 7 is installed on the front side of the grading table 8, and an audible and visual alarm light 6 is installed on the upper part of the grading table 8. The model of the grading table 8 is selected according to actual needs, as long as it meets the working requirements. An inspection door 9 is installed on the front side of the box 3. A servo motor 201 is installed on the inner wall of the box 3 through a bracket. The upper ends of the vertical rods 206 are all fixedly connected to the load-bearing plate 4. The weight sensor transceiver 7 is electrically connected to the audible and visual alarm light 6 and the weight sensor 5 through wires. The models of the weight sensor transceiver 7 and the weight sensor 5 are selected according to actual needs, as long as they meet the working requirements.

[0021] The adjustment mechanism 2 includes a servo motor 201. A worm gear 202 is fixedly connected to the end of the output shaft of the servo motor 201. Both sides of the worm gear 202 are rotatably connected to the housing 3 and the fixed plate 207 respectively through bearings. The outer wall of the fixed plate 207 is fixedly connected to the housing 3. The outer wall of the worm gear 202 meshes with two worm wheels 203. Both sides of the transmission shaft of the worm wheels 203 are rotatably connected to the housing 3 through bearings. A rocker arm 204 is fixedly connected to the outer wall of the transmission shaft of the worm wheels 203. The inner wall of the rocker arm 204 is slidably connected to the cylinder 205. The outer side of the cylinder 205 is fixedly connected to the vertical rod 206. The outer wall of the vertical rod 206 is slidably connected to the housing 3. The rotation of the output shaft of the servo motor 201 drives the worm gear 202 to rotate, thereby driving the two worm wheels 203 to rotate. The rotation of the worm wheels 203 drives the rocker arm 204 to rotate, thereby driving the cylinder 205 to slide along the inner wall of the rocker arm 204. The movement of the cylinder 205 drives the movement of the vertical rod 206.

[0022] Working principle:

[0023] When using a pre-weighing platform for tobacco leaf grading:

[0024] The height of the load-bearing plate 4 can be adjusted according to the operator's height. When the servo motor 201 is started, the output shaft of the servo motor 201 rotates forward, driving the worm gear 202 to rotate, which in turn drives the two worm wheels 203 to rotate. The rotation of the worm wheels 203 drives the swing arm 204 to rotate, which in turn drives the cylinder 205 to slide along the inner wall of the swing arm 204. The movement of the cylinder 205 drives the vertical rod 206 to move upward, and vice versa, it drives multiple vertical rods 206 to move downward. The movement of the vertical rods 206 drives the load-bearing plate 4 to move. When the load-bearing plate 4 moves to a position where the operator does not need to bend over to pick up or put down the tobacco basket, the servo motor 201 is turned off. This allows the height of the load-bearing plate 4 to be adjusted according to the operator's height, so that the operator does not need to bend over frequently when picking up or putting down the tobacco basket, which is less likely to cause the operator to become overly tired.

[0025] After the position of the load-bearing plate 4 is adjusted, the operator activates the weight sensor 5 and the weight sensor transceiver 7, and then places the tobacco basket containing the tobacco leaves on the load-bearing plate 4. The weight sensor transceiver 7 receives the signal from the weight sensor 5 and simultaneously issues a command, triggering an audible and visual alarm 6. When the audible and visual alarm 6 is red, the weight of the tobacco leaves in the basket is unqualified, and the operator adds or removes an appropriate amount. When the audible and visual alarm 6 is green, the weight of the tobacco leaves in the basket is qualified, and the operator removes the tobacco leaves from the basket and places them on the grading table 8 for grading. Then, the weighing and grading operation of the next basket of tobacco leaves can be carried out. The color of the audible and visual alarm 6 makes it easier for the operator to observe, which can alleviate the operator's eye fatigue to a certain extent, thereby improving the efficiency of professional grading, increasing the efficiency of tobacco leaf bale formation, and significantly improving the purity of the tobacco leaf grade in the bale.

[0026] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A pre-weighing platform for tobacco leaf grading, comprising a base plate (1) and a grading table (8), wherein the grading table (8) is fixedly connected to the upper left side of the base plate (1), characterized in that: The base (1) is fixedly connected with a box (3) on the right side, the box (3) is internally provided with an adjusting mechanism (2), the box (3) is provided with a bearing plate (4) on the top, the bearing plate (4) is provided with a weight sensor (5) on the bottom, the weight sensor transceiver device (7) is installed on the front side of the grading table (8), the sound and light alarm lamp (6) is installed on the top of the grading table (8), and the access door (9) is installed on the front side of the box (3).

2. The pre-weighing platform for tobacco leaf grading according to claim 1, characterized in that: The adjusting mechanism (2) comprises a servo motor (201), the output shaft end of the servo motor (201) is fixedly connected with a worm (202), the two sides of the worm (202) are rotatably connected with the box (3) and the fixed plate (207) through bearings respectively, the outer wall of the fixed plate (207) is fixedly connected with the box (3), the outer wall of the worm (202) is engaged with two worm gears (203), the two sides of the transmission shaft of the worm gear (203) are rotatably connected with the box (3) through bearings, the outer wall of the transmission shaft of the worm gear (203) is fixedly connected with a swing rod (204), the inner wall of the swing rod (204) is slidably connected with a cylinder (205), the outer side of the cylinder (205) is fixedly connected with a vertical rod (206), and the outer wall of the vertical rod (206) is slidably connected with the box (3).

3. The pre-weighing platform for tobacco leaf grading according to claim 2, characterized in that: The servo motor (201) is mounted on the inner wall of the box (3) through a support.

4. The pre-weighing platform for tobacco leaf grading according to claim 2, characterized in that: The vertical rods (206) are fixedly connected with the bearing plate (4) on the upper ends.

5. The pre-weighing platform for tobacco grading according to claim 1, characterized in that: The weight sensor transceiver device (7) is electrically connected with the sound and light alarm lamp (6) and the weight sensor (5) through wires.

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