High-precision cut tobacco continuous feeding and weighing device and working method

Abstract

According to the technical scheme, the high-precision tobacco shred continuous feeding and weighing device comprises the steps that tobacco shreds enter a closed weighing disc box in a manner of slowly pushing through a conveying screw shaft, after the weight of the tobacco shreds meets the requirement, a stepping motor stops providing pushing power for the screw shaft, and the screw shaft is driven to rotate; the cut tobacco stops being pushed into the weighing tray box, the cutter is controlled by the air cylinder to cut off the cut tobacco from a cutting seam formed between the discharging pipe and the weighing tray box, the weighing precision of the cut tobacco is controlled within 0.03 g, and the test weighing requirement is met; according to the weighing device, high-precision weighing of the tobacco shreds can be achieved, meanwhile, automatic weighing, cutting-off and conveying of the tobacco shreds are achieved, and labor input is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of precision weighing, and in particular to a high-precision tobacco continuous feeding weighing device and a working method. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] At present, the tobacco is usually weighed by discharging the tobacco into a vibrating plate and weighing it. Although the weighing accuracy of the weighing sensor itself is not a problem, the weighing accuracy is difficult to meet the requirements due to the problem of material discharge control.

[0004] Invention patent CN107271009B discloses an online tobacco weighing device and weighing method, which involves the precise weighing of tobacco using a cantilever beam weighing mechanism and a suspended hopper. However, it only involves the precise weighing of tobacco. Since tobacco has a certain continuity, how to cut it during the high-precision weighing process is a problem that cannot be solved by the prior art. Moreover, in the prior art, the entire process of tobacco weighing, including pushing, cutting, and conveying, still requires manual assistance. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a high-precision tobacco continuous feeding and weighing device and a working method, which pushes tobacco into a closed weighing tray through a spiral shaft to achieve high-precision weighing of tobacco, and uses a pneumatic cutter to cut the tobacco and transport it through an air duct, thereby achieving high-precision weighing of tobacco. At the same time, it also realizes automatic weighing, cutting and transportation of tobacco, reducing labor input.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] In a first aspect, the present invention provides a high-precision tobacco continuous feeding and weighing device, comprising a silo, a tobacco cutting device and a tobacco weighing device;

[0008] The silo is arranged on one side of the table panel, the tobacco cutting device is arranged in the middle of the table panel, and a notch is arranged in the middle of the other side of the table panel, and the tobacco weighing device is arranged in the notch;

[0009] The tobacco weighing device comprises a micro-range weighing sensor and a weighing pan box; a sensor fixing seat is arranged below the micro-range weighing sensor, and the weighing pan box is fixed on the micro-range weighing sensor; an air duct is arranged on the rear side of the weighing pan box, and a blowing speed regulating valve is arranged on the air duct, and a material discharge channel is arranged on the front side of the weighing pan box; a weighing pan cover is arranged on the top of the conveying weighing pan box, so that the weighing pan box is formed into a closed space;

[0010] The silo is connected to the weighing pan box via a discharge pipe, and a cutting seam is provided between the discharge pipe and the weighing pan box.

[0011] Furthermore, the tobacco cutting device includes a guide fixing plate, a cylinder fixing seat, a cylinder, a speed regulating valve, a guide rail, a slider, a slide plate and a cutter; a cylinder fixing seat is arranged on the guide fixing plate, a cylinder is arranged above the cylinder fixing seat, and two guide rails are also arranged on the guide fixing plate, the guide rails are arranged below the cylinder fixing seat and are parallel to the telescopic direction of the cylinder, each of the guide rails is provided with a slider, and the two sliders are connected by a slide plate to achieve synchronous sliding, the slide plate is connected to the cylinder, and the slide plate is driven to reciprocate by the cylinder, and a cutter is installed below the slide plate.

[0012] Furthermore, the cylinder fixing seat is arranged on a side of the guide fixing plate close to the tobacco weighing device.

[0013] Furthermore, the cylinder is provided with two speed regulating valves, which are respectively arranged at the upper part and the lower part of the cylinder and are used to control the telescopic movement of the cylinder.

[0014] Furthermore, the guide fixing plate is fixedly installed in the middle of the table panel and is located between the silo and the tobacco weighing device, and the normal direction of the guide fixing plate is parallel to the axial direction of the discharge pipe.

[0015] Furthermore, a spiral shaft is provided in the silo for delivering the shredded tobacco in the silo into the discharge pipe.

[0016] Furthermore, seat bearings are respectively provided on the left and right sides of the silo for mounting the screw shaft.

[0017] Furthermore, a stepper motor is arranged on the left side of the silo, and the stepper motor is fixed on the table panel through a motor fixing plate.

[0018] Furthermore, the main shaft of the stepper motor is connected to the screw shaft through a connecting piece, and the connecting piece is a coupling.

[0019] In a second aspect, the present invention further provides a working method of a high-precision tobacco continuous feeding and weighing device, comprising the following steps:

[0020] Put the tobacco into the hopper, start the stepper motor, and drive the spiral shaft to rotate. The spiral shaft rotates to slowly push the tobacco in the hopper into the weighing pan box through the discharge pipe. When the weight of the tobacco pushed into the weighing pan box reaches the required weight measured by the micro-range weighing sensor, the stepper motor stops spirally pushing the tobacco and cuts the tobacco with the cutter.

[0021] When the tobacco is weighed and cut, the cutter does not immediately withdraw from the cutting seam to block the outlet of the discharge pipe. At this time, the air volume in the air duct is controlled by the blowing speed regulating valve to blow the tobacco in the weighing box that has reached the weight requirement through the discharge channel to enter the next process.

[0022] The beneficial effects of the present invention are as follows:

[0023] The high-precision tobacco continuous feeding weighing device and working method disclosed in the present invention adopts a micro-range weighing sensor to improve the weighing accuracy. A cutting seam is set between the discharge pipe and the weighing pan box to reduce the weighing error caused by the connection between the discharge pipe and the weighing pan box. The weighing pan box is provided with an air duct and a blowing speed regulating valve, which can control the air volume to blow the tobacco that meets the weight requirement into the next process; a weighing pan cover is provided on the top to form a closed space to prevent other factors from interfering with the weighing accuracy. The spiral shaft in the silo is driven by a stepper motor to feed the material, realizing automatic weighing, cutting and conveying, reducing labor input and improving production efficiency.

[0024] In the tobacco cutting device of the present invention, the cutter can be accurately inserted into the cutting seam to cut the tobacco, so that the weighing pan box forms a sealed structure, and the tobacco is blown into the material discharge channel for the next step of processing by means of the air duct and the blowing speed regulating valve, so that the whole device can realize automatic cutting of tobacco while realizing high-precision weighing, so that the supply of tobacco is controllable, and the weighing accuracy can be controlled within 0.03g, meeting the test weighing requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0026] Figure 1 It is a schematic diagram of the overall structure of the weighing device of the present invention;

[0027] Figure 2 It is a front view of the weighing device of the present invention;

[0028] Figure 3 It is a top view of the weighing device of the present invention.

[0029] Among them, 1. Fixed column; 2. Sensor fixing seat; 3. Table panel; 4. Stepper motor; 5. Motor fixing plate; 6. Bearing with seat; 7. Bin; 8. Screw shaft; 9. Discharge pipe; 10. Guide fixing plate; 11. Cylinder fixing seat; 12. Cylinder; 13. Speed ​​regulating valve; 14. Guide rail; 15. Slider; 16. Slide plate; 17. Cutter; 18. Scale box; 19. Scale cover; 20. Air duct; 21. Blowing speed regulating valve; 22. Micro-range weighing sensor; 23. Unloading channel. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof;

[0032] The embodiment of the present invention discloses a high-precision tobacco continuous feeding and weighing device, such as Figure 1-Figure 3 As shown, it includes a silo 7, a tobacco cutting device and a tobacco weighing device; the silo 7 is arranged on one side of the table panel 3, the tobacco cutting device is arranged in the middle of the table panel 3, four fixed columns 1 are installed below the table panel 3, and a notch is arranged in the middle position of the other side of the table panel 3, in which the tobacco weighing device is arranged; the tobacco weighing device includes a micro-range weighing sensor 22 and a weighing pan box 18; a sensor fixing seat 2 is arranged below the micro-range weighing sensor 22, and the weighing pan box 18 is fixed on the micro-range weighing sensor 22; the silo 7 is connected to the weighing pan box 18 through a discharge pipe 9, and a cutting seam is arranged between the discharge pipe 9 and the weighing pan box 18 to reduce the weighing error caused by the connection between the weighing pan box 18 and the discharge pipe 9; the high precision in this embodiment means that the weighing error of the tobacco is kept within 0.03g.

[0033] A cutting seam is arranged between the left side of the weighing pan box 18 and the discharge pipe 9, and an air duct 20 is arranged on the rear side of the weighing pan box 18. The air duct 20 is provided with a blowing speed regulating valve 21 for controlling the air volume, so that the tobacco that meets the weight requirement can be blown into the next process through the air duct 20; a material discharge channel 23 is arranged on the front side of the weighing pan box 18 for conveying the tobacco to the next process; a weighing pan cover 19 is arranged on the top of the conveying weighing pan box 18, so that the weighing pan box 18 is formed into a closed space, and at the same time, other factors are prevented from interfering with the weighing accuracy.

[0034] The tobacco shred cutting device comprises a guide fixing plate 10, a cylinder fixing seat 11, a cylinder 12, a speed regulating valve 13, a guide rail 14, a slider 15, a slide plate 16 and a cutter 17; the guide fixing plate 10 is fixedly installed in the middle of the table panel 3 and is located between the hopper 7 and the tobacco shred weighing device, and the normal direction of the guide fixing plate 10 is parallel to the axial direction of the discharge pipe 9; a cylinder fixing seat 11 is provided on the side of the guide fixing plate 10 close to the tobacco shred weighing device, a cylinder 12 is provided above the cylinder fixing seat 11, two speed regulating valves 13 are provided on the cylinder 12 for controlling the telescopic movement of the cylinder 12, and two guide rails 14 are also provided on the side of the guide fixing plate 10 close to the tobacco shred weighing device, and the guide rails 14 are provided Below the cylinder fixing seat 11 and parallel to the telescopic direction of the cylinder 12, a slider 15 is arranged on each guide rail 14, and the two sliders 15 are connected by a slide plate 16 to realize synchronous sliding, and the slide plate 16 is connected to the cylinder 12, and the slide plate 16 is driven by the cylinder 12 to move back and forth, and a cutter 17 is installed below the slide plate 16. Driven by the cylinder 12, the cutter 17 can be inserted into the cutting gap formed between the left side of the weighing pan box 18 and the discharge pipe 9. When the cutter 17 is inserted into the cutting gap, the tobacco is cut off, and the weighing pan box 18 becomes a sealed structure with only one outlet at the unloading channel 23, and then the tobacco is blown away from the unloading channel 23 through the blowing speed regulating valve 21 to enter the next process.

[0035] The silo 7 is fixedly arranged on one side of the table panel 3. A spiral shaft 8 is arranged in the silo 7 for feeding the tobacco in the silo 7 into the discharge pipe 9. A seat bearing 6 is arranged on the left side of the silo 7. The stepper motor 4 is fixed on the table panel 3 through the motor fixing plate 5 and is located on the left side of the silo 7. The main shaft of the stepper motor 4 is connected to the spiral shaft 8 and provides power for the spiral shaft 8.

[0036] The embodiment of the present invention also discloses a working method of a high-precision tobacco continuous feeding and weighing device, comprising:

[0037] Put the tobacco into the hopper, start the stepper motor 4, and the stepper motor 4 drives the spiral shaft 8 supported by the seat bearing 6. The spiral shaft 8 rotates to slowly push the tobacco in the silo 7 into the weighing pan box 18 through the discharge pipe 9; when the weight of the tobacco pushed into the weighing pan box 18 reaches the requirement as measured by the micro-range weighing sensor 22, a signal is sent to the stepper motor 4 to stop spirally pushing the tobacco. Because the tobacco has a certain length, there is a certain connection between the outlet of the discharge pipe 9 and the tobacco weighed on the weighing pan. In order to ensure the weight accuracy of the tobacco, the tobacco is cut along the outlet of the discharge pipe 9 by the cutter 17;

[0038] When the tobacco is weighed and cut, the cutter 17 should not be lifted to block the outlet pipe 9. At this time, the air duct 20 fixed on the table panel 3 controls the air volume by the blowing speed regulating valve 21 to blow the tobacco in the weighing box 18 that has reached the weight requirement through the discharge channel 23 to enter the next process, thereby realizing automatic weighing, cutting and conveying of tobacco and reducing labor input.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-precision tobacco continuous feeding and weighing device, characterized in that: It includes a silo, a tobacco cutting device and a tobacco weighing device; The silo is arranged on one side of the table panel, the tobacco cutting device is arranged in the middle of the table panel, and a notch is arranged in the middle of the other side of the table panel, and the tobacco weighing device is arranged in the notch; The tobacco weighing device comprises a micro-range weighing sensor and a weighing pan box; a sensor fixing seat is arranged below the micro-range weighing sensor, and the weighing pan box is fixed on the micro-range weighing sensor; an air duct is arranged on the rear side of the weighing pan box, and a blowing speed regulating valve is arranged on the air duct, and a material discharge channel is arranged on the front side of the weighing pan box; a weighing pan cover is arranged on the top of the conveying weighing pan box, so that the weighing pan box is formed into a closed space; The silo is connected to the weighing pan box via a discharge pipe, and a cutting seam is provided between the discharge pipe and the weighing pan box.

2. A high-precision tobacco continuous feeding and weighing device as claimed in claim 1, characterized in that: The tobacco cutting device includes a guide fixing plate, a cylinder fixing seat, a cylinder, a speed regulating valve, a guide rail, a slider, a slide plate and a cutter; a cylinder fixing seat is arranged on the guide fixing plate, a cylinder is arranged above the cylinder fixing seat, and two guide rails are also arranged on the guide fixing plate, the guide rails are arranged below the cylinder fixing seat and are parallel to the telescopic direction of the cylinder, a slider is arranged on each of the guide rails, and the two sliders are connected by a slide plate to achieve synchronous sliding, the slide plate is connected to the cylinder, and the slide plate is driven to reciprocate by the cylinder, and a cutter is installed below the slide plate.

3. A high-precision tobacco continuous feeding and weighing device as claimed in claim 2, characterized in that: The cylinder fixing seat is arranged on a side of the guide fixing plate close to the tobacco weighing device.

4. A high-precision tobacco continuous feeding and weighing device as claimed in claim 3, characterized in that: The cylinder is provided with two speed regulating valves, which are respectively arranged at the upper part and the lower part of the cylinder and are used to control the telescopic movement of the cylinder.

5. A high-precision tobacco continuous feeding and weighing device as claimed in claim 1, characterized in that: The guide fixing plate is fixedly installed in the middle of the table panel and is located between the silo and the tobacco weighing device. The normal direction of the guide fixing plate is parallel to the axial direction of the discharge pipe.

6. A high-precision tobacco continuous feeding and weighing device as claimed in claim 1, characterized in that: The silo is provided with a spiral shaft for delivering the shredded tobacco in the silo into the discharge pipe.

7. A high-precision tobacco continuous feeding and weighing device as claimed in claim 6, characterized in that: The left side and the right side of the silo are respectively provided with seat bearings for mounting the screw shaft.

8. A high-precision tobacco continuous feeding and weighing device as claimed in claim 7, characterized in that: A stepper motor is arranged on the left side of the silo, and the stepper motor is fixed on the table panel through a motor fixing plate.

9. A high-precision tobacco continuous feeding and weighing device as claimed in claim 8, characterized in that: The main shaft of the stepper motor is connected to the screw shaft through a connecting piece, and the connecting piece is a coupling.

10. A working method of a high-precision tobacco continuous feeding and weighing device according to any one of claims 1 to 9, characterized in that: The steps include: Put the tobacco into the hopper, start the stepper motor, and drive the spiral shaft to rotate. The spiral shaft rotates to slowly push the tobacco in the hopper into the weighing pan box through the discharge pipe. When the weight of the tobacco pushed into the weighing pan box reaches the required weight measured by the micro-range weighing sensor, the stepper motor stops spirally pushing the tobacco and cuts the tobacco with the cutter. When the tobacco is weighed and cut, the cutter does not immediately withdraw from the cutting seam to block the outlet of the discharge pipe. At this time, the air volume in the air duct is controlled by the blowing speed regulating valve to blow the tobacco in the weighing box that has reached the weight requirement through the discharge channel to enter the next process.

Images