Feeding and weighing system for spirally conveying cut tobaccos

Abstract

A feeding and weighing system for spirally conveying tobacco shreds comprises a hopper with an opening in the top, a stepping motor, a weighing tray and an electronic balance, a vertical frame is arranged on one side of the electronic balance, the hopper and the stepping motor are fixedly installed on the vertical frame at intervals, the hopper is located above the electronic balance, and a rotating shaft is horizontally and rotationally installed at the bottom in the hopper; one end of the rotating shaft is rotatably installed on one side plate, away from the electronic balance, of the hopper in a penetrating mode and is in transmission connection with a motor shaft of the stepping motor, a discharging port is formed in the lower side portion of one side plate, close to the electronic balance, of the hopper, the other end of the rotating shaft extends to the discharging port, and spiral conveying blades spirally arranged in the axial direction are fixedly installed on the rotating shaft; the conveying direction of the spiral conveying blade faces the discharging port in the axial direction of the rotating shaft, and the weighing tray is placed on the electronic balance. The full-automatic tobacco filling machine is high in weighing precision and weighing efficiency, capable of improving tobacco filling efficiency, high in mechanization degree, low in labor intensity and low in labor cost, tobacco shred pollution is avoided, and test results are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette experiment equipment, in particular to a spirally conveying tobacco shred feeding and weighing system. Background Art

[0002] In the cigarette production process, smokers' satisfaction and comfort need to be considered while ensuring the safety of tobacco products. Studies have shown that the intrinsic qualities of cigarettes, such as the ratio of tobacco product ingredients, tobacco filling density, and filling uniformity, have an impact on the aroma quality and the release of harmful components in the smoke. Therefore, in order to improve the intrinsic quality of cigarettes, laboratory personnel of tobacco companies will change the ratio of tobacco products and develop new formula tobacco products. When developing new formula tobacco products, it is necessary to prepare cigarettes with well-proportioned formula tobacco and conduct smoking aroma tests. However, since it is an experimental test sample, the amount of formula tobacco is small, and it is impossible to prepare formula cigarettes on the cigarette production line.

[0003] Among them, the preparation and testing of formula cigarettes have high requirements for the weight accuracy of tobacco. Currently, most laboratory personnel weigh tobacco manually, which is labor-intensive, has high labor costs, and has extremely low weighing efficiency and poor weighing accuracy, resulting in low filling efficiency and may also contaminate tobacco, affecting test results.

[0004] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the invention

[0005] The purpose of the utility model is to address the deficiencies of the prior art and thus provide a spiral conveying tobacco feeding and weighing system. The utility model has high weighing accuracy and high weighing efficiency, improves cigarette filling efficiency, has a high degree of mechanization, has low labor intensity, has low labor costs, avoids tobacco pollution, and ensures test results.

[0006] In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is: a spiral conveying tobacco feeding and weighing system, comprising a hopper with an open top, a stepper motor, a weighing tray and an electronic balance, a stand is provided on one side of the electronic balance, the hopper and the stepper motor are fixedly installed on the stand at intervals, the hopper is located above the electronic balance, a rotating shaft is horizontally installed on the bottom of the hopper, one end of the rotating shaft penetrates and is rotatably installed on a side plate of the hopper away from the electronic balance and is drivingly connected to the motor shaft of the stepper motor, a discharge port is provided on the lower side of a side plate of the hopper close to the electronic balance, the other end of the rotating shaft extends to the discharge port, a spiral conveying blade arranged along an axial direction is fixedly installed on the rotating shaft, the conveying direction of the spiral conveying blade is arranged along the axial direction of the rotating shaft toward the discharge port, and the weighing tray is placed on the electronic balance and is correspondingly located below the discharge port.

[0007] Based on the above, the discharge port is a circular hole, and one end of the rotating shaft extends to the discharge port, passes through the discharge port concentrically and extends out of the hopper.

[0008] Based on the above, the circumferential diameter of the outer circle of the spiral conveying blade is smaller than the diameter of the discharge port.

[0009] Based on the above, the spiral conveying blade extends along the rotating shaft through the discharge port and extends out of the hopper for a certain length.

[0010] Based on the above, the stand includes a vertical plate, which is arranged on one side of the electronic balance. The top of the vertical plate is fixedly connected with a horizontal support plate. The horizontal support plate and the vertical plate are combined in a T-shape. One side of the horizontal support plate is placed above the electronic balance. The hopper and the stepper motor are fixedly installed on the horizontal support plate at intervals.

[0011] Based on the above, the electronic balance is a precision balance, and the electronic balance includes a balance body and a balance tray arranged on the balance body, and the weighing tray is placed on the balance tray.

[0012] Based on the above, the motor shaft and the rotating shaft of the stepper motor are coaxially connected through a coupling.

[0013] Based on the above, the weighing tray includes a C-shaped plate with the open side facing downward, and a downwardly concave tray body is integrally formed in the middle of the upper side plate of the C-shaped plate. The tray body is located below the discharge port and biased towards the side away from the hopper. The bottom of the tray body is higher than the lower sides of the two side plates of the C-shaped plate, and the lower sides of the two side plates of the C-shaped plate are supported on the balance tray.

[0014] Based on the above, the hopper is a V-shaped hopper or a trapezoidal hopper that is larger at the top and smaller at the bottom, and the bottom plate of the hopper is a concave arc-shaped plate.

[0015] The utility model has substantial features and progress compared with the prior art. Specifically, the utility model is provided with a hopper for filling tobacco shreds. The hopper is fixed on a stand on one side of the electronic balance and is located above the electronic balance. A rotating shaft is installed horizontally and rotatably at the bottom of the hopper. One end of the rotating shaft passes through and is rotatably installed on a side plate of the hopper away from the electronic balance and is connected to the motor shaft of a stepper motor. A discharge port is provided on the lower side of a side plate of the hopper close to the electronic balance. The other end of the rotating shaft passes through the discharge port and extends out of the hopper and is located above the electronic balance. A spiral conveying blade arranged in an axial spiral is fixedly connected to the rotating shaft. When tobacco is needed to prepare a formula cigarette, When the tobacco is being weighed, the stepper motor is controlled to rotate, and the stepper motor drives the rotating shaft to rotate. The spiral conveying blades on the rotating shaft then spirally convey the tobacco in the hopper toward the discharge port, so that a certain amount of tobacco falls from the discharge port onto the weighing tray and is weighed by an electronic balance. The electronic balance is a precision balance to ensure that the weight error is within the specified range. When the required weight is reached, the stepper motor stops, and the weighing tray transfers the tobacco to the next process for pouring out. Then, the weighing tray resets and continues to receive tobacco of the same weight. The weighing accuracy is high, the weighing efficiency is high, the filling efficiency is improved, the mechanization degree is high, the labor intensity is low, the labor cost is low, tobacco pollution is avoided, and the test results are guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an axial view of the utility model.

[0017] Figure 2 It is a side view of the utility model.

[0018] Figure 3 It is a top view of the utility model.

[0019] In the figure: 1. Hopper; 2. Stepper motor; 3. Weighing tray; 4. Stand; 5. Rotating shaft; 6. Discharge port; 7. Spiral conveying blade; 8. Balance body; 9. Balance tray; 10. Coupling. DETAILED DESCRIPTION

[0020] The technical solution of the utility model is further described in detail below through specific implementation methods.

[0021] Example 1

[0022] like Figure 1-3As shown, the spiral conveying tobacco feeding and weighing system comprises a hopper 1 with an open top, a stepper motor 2, a weighing tray 3 and an electronic balance. A stand 4 is provided on one side of the electronic balance. The hopper 1 and the stepper motor 2 are fixedly installed on the stand 4 at intervals. The hopper 1 is located above the electronic balance. A rotating shaft 5 is horizontally rotatably installed at the bottom of the hopper 1. One end of the rotating shaft 5 penetrates and is rotatably installed on a side plate of the hopper 1 away from the electronic balance and is drivingly connected to the motor shaft of the stepper motor 2. A discharge port is provided at the lower side of a side plate of the hopper 1 close to the electronic balance. 6, the discharge port 6 is a circular hole, the other end of the rotating shaft 5 passes through the discharge port 6 concentrically and extends out of the hopper 1, a spiral conveying blade 7 arranged along the axial direction is fixedly mounted on the rotating shaft 5, the circumferential diameter of the outer circle of the spiral conveying blade 7 is smaller than the diameter of the discharge port 6, the spiral conveying blade 7 extends along the rotating shaft 5 through the discharge port 6 and extends out of the hopper 1 for a certain length, the conveying direction of the spiral conveying blade 7 is arranged along the axial direction of the rotating shaft 5 toward the discharge port 6, and the weighing tray 3 is placed on the electronic balance and is correspondingly located below the discharge port 6.

[0023] The stand 4 of the present embodiment includes a stand plate, which is arranged on one side of the electronic balance. A horizontal support plate is fixedly connected to the top of the stand plate. The horizontal support plate and the stand plate are combined in a T-shape. One side of the horizontal support plate is placed above the electronic balance. The hopper 1 and the stepper motor 2 are fixedly installed on the horizontal support plate at intervals.

[0024] The electronic balance is a precision balance, and comprises a balance body 8 and a balance tray 9 arranged on the balance body 8 , and the weighing tray 3 is placed on the balance tray 9 .

[0025] The motor shaft of the stepper motor 2 is coaxially connected to the rotating shaft 5 through a coupling 10. In other embodiments, the motor shaft of the stepper motor 2 and the rotating shaft 5 can also be connected by a gear transmission mechanism, a belt transmission mechanism, a chain transmission mechanism, etc.

[0026] The hopper 1 of this embodiment is a V-shaped hopper with a larger upper portion and a smaller lower portion, and the bottom plate of the hopper 1 is a concave arc-shaped plate. The hopper 1 can also be a trapezoidal hopper with a larger upper portion and a smaller lower portion.

[0027] When this embodiment is used, tobacco is filled in the hopper 1, and the stepper motor 2 is controlled to rotate. The stepper motor 2 drives the rotating shaft 5 to rotate, and the spiral conveying blades 7 on the rotating shaft 5 spirally convey the tobacco in the hopper 1 toward the discharge port 6, so that a certain amount of tobacco falls from the discharge port 6 onto the weighing tray 3 and is weighed by an electronic balance. The electronic balance is a precision balance to ensure that the weight error is within the specified range. When the required weight is reached, the stepper motor 2 stops, and the weighing tray 3 transfers the tobacco to the next process for pouring out. Then, the weighing tray 3 is reset to continue to receive tobacco of the same weight. The weighing accuracy is high, the weighing efficiency is high, the filling efficiency is improved, the mechanization degree is high, the labor intensity is low, the labor cost is low, tobacco pollution is avoided, and the test results are guaranteed.

[0028] Example 2

[0029] On the basis of Embodiment 1, the weighing tray 3 comprises a C-shaped plate with the open side facing downward, a downwardly concave tray body is integrally formed in the middle of the upper side plate of the C-shaped plate, the tray body is located below the discharge port 6 and biased to the side away from the hopper 1, the bottom of the tray body is higher than the lower side edges of the two side plates of the C-shaped plate, and the lower side edges of the two side plates of the C-shaped plate are supported on the balance tray 9. The weighing tray 33 is simple to manufacture, low in cost, and can be integrally die-cast.

[0030] Among them, the disk body is a trough structure such as a V-shaped trough body, a trapezoidal trough body, a U-shaped trough body, a C-shaped trough body, a hemispherical trough body or a hemispherical trough body that is concave and larger at the top and smaller at the bottom.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. The spiral conveying tobacco feeding and weighing system is characterized by: It includes a hopper with an open top, a stepper motor, a weighing tray and an electronic balance. A stand is provided on one side of the electronic balance. The hopper and the stepper motor are fixedly installed on the stand at intervals. The hopper is located above the electronic balance. A rotating shaft is horizontally installed on the bottom of the hopper. One end of the rotating shaft penetrates and is rotatably installed on a side plate of the hopper away from the electronic balance and is drivingly connected to the motor shaft of the stepper motor. A discharge port is provided on the lower side of a side plate of the hopper close to the electronic balance. The other end of the rotating shaft extends to the discharge port. A spiral conveying blade arranged along the axial direction is fixedly installed on the rotating shaft. The conveying direction of the spiral conveying blade is arranged along the axial direction of the rotating shaft toward the discharge port. The weighing tray is placed on the electronic balance and is correspondingly located below the discharge port.

2. The spiral conveying tobacco feeding and weighing system according to claim 1 is characterized in that: The discharge port is a circular hole, and one end of the rotating shaft extends to the discharge port, passes through the discharge port concentrically and extends out of the hopper.

3. The spiral conveying tobacco feeding and weighing system according to claim 2 is characterized in that: The circumference diameter of the outer circle of the spiral conveying blade is smaller than the diameter of the discharge port.

4. The spiral conveying tobacco feeding and weighing system according to claim 3 is characterized in that: The spiral conveying blade extends along the rotating shaft through the discharge port and extends out of the hopper for a certain length.

5. The spiral conveying tobacco feeding and weighing system according to claim 1 is characterized in that: The stand includes a stand plate, which is arranged on one side of the electronic balance. A horizontal support plate is fixedly connected to the top of the stand plate. The horizontal support plate and the stand plate are combined in a T-shape. One side of the horizontal support plate is placed above the electronic balance. The hopper and the stepper motor are fixedly installed on the horizontal support plate at intervals.

6. The spiral conveying tobacco feeding and weighing system according to claim 1 is characterized in that: The electronic balance is a precision balance, which comprises a balance body and a balance tray arranged on the balance body, and a weighing tray is placed on the balance tray.

7. The spiral conveying tobacco feeding and weighing system according to claim 1 is characterized in that: The motor shaft and the rotating shaft of the stepper motor are coaxially connected through a coupling.

8. The spiral conveying tobacco feeding and weighing system according to claim 1 is characterized in that: The weighing tray includes a C-shaped plate with the open side facing downward, and a downwardly concave tray body is integrally formed in the middle of the upper side plate of the C-shaped plate. The tray body is located below the discharge port and biased to the side away from the hopper. The bottom of the tray body is higher than the lower sides of the two side plates of the C-shaped plate, and the lower sides of the two side plates of the C-shaped plate are supported on the balance tray.

9. The spiral conveying tobacco feeding and weighing system according to claim 1, characterized in that: The hopper is a V-shaped hopper or a trapezoidal hopper that is larger at the top and smaller at the bottom, and the bottom plate of the hopper is a concave arc-shaped plate.

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