CN112577576A

CN112577576A - Automatic weighing device

Info

Publication number: CN112577576A
Application number: CN202011247945.5A
Authority: CN
Inventors: 杨常勇; 毛爱龙; 康晓珍; 乔建军; 郑晓丽; 陈晓飞
Original assignee: China Tobacco Henan Industrial Co Ltd
Current assignee: China Tobacco Henan Industrial Co Ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-03-30

Abstract

The application discloses automatic weighing device, including frame, sample storehouse, automatic feed mechanism, sample platform, weighing sensor and sampling bucket. Wherein, the frame comprises a supporting arm and a base; the sample bin is fixedly connected with the supporting arm and is provided with an accommodating chamber and a feed opening communicated with the accommodating chamber; the automatic feeding mechanism comprises a spiral feeding sheet; the sampling platform sets up on the base, and weighing sensor and sampling platform fixed connection, the sample bucket is placed on the sampling platform. In the application, the tobacco shreds in the accommodating chamber are sent out from the feed opening and fall into the sampling barrel through the rotation of the spiral feeding piece, so that the trouble of manually taking the tobacco shreds in the traditional mode is changed, and the operation is simple; through weighing sensor, learn in real time the pipe tobacco weight in the sampling bucket to control that can be accurate absorbs the weight of pipe tobacco, make the weight of sampling at every turn the same, guarantee the reliability of data in the test procedure of follow-up pipe tobacco.

Description

Automatic weighing device

Technical Field

The application relates to the field of weighing, especially, relate to an automatic weighing device.

Background

At present, when physical quality of tobacco shreds is evaluated, main evaluation indexes comprise physical indexes such as water content, filling value and structure, and production quality can be well controlled by evaluating the physical indexes. However, in the actual production process, even if the physical indexes of the cut tobacco of different batches are approximately the same, the cut tobacco of different batches has the difference of the shutdown rate and the difference of the quantity of the removed blanks in the rolling process. That is, among a plurality of batches of cut tobaccos with approximately same indexes, the shutdown rate in the rolling process of partial batches of cut tobaccos is low, and the quantity of removed empty heads is small, so that the production yield is high; in the process of rolling partial batches of cut tobacco, the shutdown rate is high, the quantity of the removed empty ends is large, and therefore the production yield is low.

Research shows that the reason for the difference of the shutdown rate and the empty head removing amount of different batches of cut tobaccos is that the characteristics of elasticity, supporting strength, softness and the like of the cut tobaccos in different batches are different. Therefore, in order to improve the production yield, it is necessary to evaluate not only the above-mentioned material indexes but also the properties such as elasticity, support strength, and softness.

In order to detect the characteristics of the cut tobacco, a device for measuring the elasticity of the cut tobacco is described in patent application No. 2019204854771, a method and a device for detecting the supporting strength of the cut tobacco are described in patent application No. 2019102981442, and a method and a device for detecting the softness of the cut tobacco are described in patent application No. 2019102981438. The device and the method for detecting the characteristics of the cut tobacco adopt a controlled variable method, and an average value is obtained through multiple tests, so that the quality of the cut tobacco in the measuring cylinder is ensured to be the same in the process.

However, in the prior art, the tobacco shreds are sampled and weighed in the manual tobacco shred adding mode in the process of testing the tobacco shreds, and in the manual sampling process, because the staff add the tobacco shreds by feel when taking and placing the tobacco shreds, the tobacco shreds are added by the staff each time, so that the weight added each time has randomness, and the tobacco shreds are required to be taken and placed for many times, so that the efficiency is low, and large errors are inevitably generated in the repeated weighing process.

Disclosure of Invention

An object of this application is to provide an automatic weighing device, when weighing the pipe tobacco, can add the pipe tobacco automatically, not only improve work efficiency, can also guarantee the precision.

The automatic weighing device comprises a rack, a sample bin, an automatic feeding mechanism, a sampling table, a weighing sensor and a sampling barrel; the frame comprises a supporting arm and a base which are fixedly connected; the sample bin is fixedly connected with the supporting arm and is provided with an accommodating chamber and a feed opening communicated with the accommodating chamber; the automatic feeding mechanism comprises a spiral feeding piece, and the spiral feeding piece is arranged in the accommodating cavity and can rotate in the accommodating cavity; the sampling platform sets up on the base, and weighing sensor and sampling platform fixed connection, sampling bucket place on the sampling platform, and the opening of sampling bucket is towards the feed opening.

Optionally, the sample bin is provided with a feed inlet, and the feed inlet and the feed outlet are located at two opposite ends of the sample bin.

Optionally, the automatic feeding mechanism further comprises a fixed cover, a connecting rod and a first driving part; the fixed cover is detachably covered on the feeding port, and the first driving part is fixedly connected with one side of the fixed cover, which faces the sample bin; one end of the connecting rod is fixedly connected with the output end of the first driving part, the other end of the connecting rod extends into the accommodating cavity, and the spiral feeding piece is fixedly wound on the connecting rod.

Optionally, the communicating part of the accommodating chamber and the feed opening is funnel-shaped.

Optionally, the automatic feeding device further comprises a switch, wherein the switch is fixedly arranged at the discharging opening and controls the opening or closing of the discharging opening.

Optionally, the switch is a solenoid valve.

Optionally, the sampling platform is slidably connected to the base; the automatic weighing device also comprises a second driving part, the second driving part is fixedly connected with the supporting arm, and the output end of the second driving part is fixedly connected with the sampling platform.

Optionally, the device further comprises a recovery barrel and a recovery platform, wherein the recovery platform is slidably connected to the base, the recovery barrel is placed on the recovery platform, and the output end of the second driving component is fixedly connected with the recovery platform; the second driving part drives the sampling platform to be far away from the feed opening, and simultaneously drives the recovery platform to move, so that the opening of the recovery barrel faces the feed opening.

Optionally, the base is provided with a sliding groove, sliding rails are arranged below the sampling platform and the recovery platform, and the sampling platform and the recovery platform slide in the sliding groove through respective sliding rails respectively.

Optionally, the support arm includes a support, a first arm and a second arm, the support is vertically and fixedly connected with the base, the first arm and the second arm are both vertically and fixedly connected with the support, and the first arm and the second arm are both parallel to the base; the first arm and the second arm are far away from the one end of support and have all been seted up the fixed orifices, and sample storehouse fixing clip establishes in the fixed orifices.

The application provides an automatic weighing device, including frame, sample storehouse, automatic feed mechanism, sample platform, weighing sensor and sample bucket. Wherein, the frame comprises a supporting arm and a base which are fixedly connected; the sample bin is fixedly connected with the supporting arm and is provided with an accommodating chamber and a feed opening communicated with the accommodating chamber; the automatic feeding mechanism comprises a spiral feeding piece, and the spiral feeding piece is arranged in the accommodating cavity and can rotate in the accommodating cavity; the sampling platform sets up on the base, and weighing sensor and sampling platform fixed connection, sampling bucket place on the sampling platform, and the opening of sampling bucket is towards the feed opening. In this application, through the rotation of spiral feed piece, the pipe tobacco that will hold in the chamber is seen off from the feed opening to collect through the sample bucket that sets up in the feed opening below, thereby change the loaded down with trivial details of artifical uptake pipe tobacco among the traditional mode, make easy operation. Further, still be provided with weighing sensor in the below of sampling bucket, can learn in real time the pipe tobacco weight in the sampling bucket, when reaching the weight of needs, stop the rotation of spiral feed piece, can stop seeing off of pipe tobacco to control that can be accurate absorbs the weight of pipe tobacco, make the weight of at every turn taking a sample the same, guarantee the reliability of the test in-process data of follow-up pipe tobacco.

Drawings

FIG. 1 is a schematic structural diagram of an automatic weighing apparatus provided in an embodiment of the present application;

FIG. 2 is a schematic partial structural diagram of an automatic feeding mechanism in an automatic weighing apparatus provided in an embodiment of the present application;

fig. 3 is a schematic control diagram of an automatic weighing apparatus according to an embodiment of the present disclosure.

Description of the reference numerals

100-frame, 110-support arm, 111-support, 112-first arm, 113-second arm, 114-fixing hole, 120-base, 121-chute, 200-sample bin, 300-automatic feeding mechanism, 310-spiral feeding sheet, 320-fixing cover, 330-connecting rod, 340-first driving part, 341-speed reducer, 400-sampling table, 500-sampling barrel, 600-switch, 700-second driving part, 800-recovery barrel, 810-recovery table, 900-operation panel, 1000-weighing sensor, 1100-central processing unit.

Detailed Description

Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

As shown in fig. 1 and 2, the automatic weighing apparatus provided in the embodiment of the present application includes a rack 100, a sample bin 200, an automatic feeding mechanism 300, a sampling platform 400, a load cell, and a sampling bucket 500.

Wherein, the frame 100 comprises a support arm 110 and a base 120 which are fixedly connected; the sample bin 200 is fixedly connected with the supporting arm 110, and the sample bin 200 is provided with an accommodating chamber and a feed opening communicated with the accommodating chamber; the automatic feeding mechanism 300 includes a spiral feeding piece 310, and the spiral feeding piece 310 is disposed in the accommodation chamber and is capable of rotating in the accommodation chamber; the setting of sample platform 400 is on base 120, and weighing sensor and sample platform 400 fixed connection, sample bucket 500 place on sample platform 400, and the opening of sample bucket 500 is towards the feed opening.

It can be understood by those skilled in the art that, in the present embodiment, in order to ensure the accuracy of each sampling, the weight of the cut tobacco in the sampling barrel 500 can be measured by using a difference method. Specifically, weigh the weight of sampling bucket 500 before the sample, weigh the weight of sampling bucket 500 in real time among the sampling process, and the difference between the two is the weight of pipe tobacco in sampling bucket 500.

In this application embodiment, through the rotation of spiral feed piece 310, the pipe tobacco that the drive held in the chamber is along spiral direction toward the feed opening direction removal of spiral feed piece 310, to the pipe tobacco that will hold in the chamber is seen off from the feed opening, because of sampling bucket 500 is located the feed opening below, and sampling bucket 500's opening orientation feed opening, consequently, the pipe tobacco that sees off from the feed opening can fall into sampling bucket 500 automatically, thereby change the loaded down with trivial details of artifical ingestion pipe tobacco among the traditional mode, make easy operation. Further, still be provided with weighing sensor in the below of sampling bucket 500, can learn in real time the pipe tobacco weight in sampling bucket 500, when reaching required weight, stop the rotation of spiral feed piece 310, can stop seeing off of pipe tobacco to the weight of pipe tobacco is absorb in control that can be accurate, makes the weight of sampling at every turn the same, guarantees the reliability of the test in-process data of follow-up pipe tobacco.

In an alternative embodiment, sample chamber 200 is provided with a feed port, and the feed port are located at opposite ends of sample chamber 200. In this embodiment, the tobacco shreds are added into the sample bin 200 through the independently arranged feeding port, so that the tobacco shred adding process is simple and convenient. Simultaneously, in the embodiment, the feed inlet and the feed outlet are arranged oppositely, so that the tobacco shreds can flow out more smoothly.

In an alternative embodiment, the automatic feeding mechanism 300 further includes a fixed cover 320, a connecting rod 330, and a first driving part 340; the fixed cover 320 is detachably covered on the feeding port, and the first driving part 340 is fixedly connected with one side of the fixed cover 320 facing the sample bin 200; one end of the connecting rod 330 is fixedly connected with the output end of the first driving part 340, the other end of the connecting rod 330 extends into the accommodating chamber, and the spiral feeding piece 310 is fixedly wound on the connecting rod 330.

In this embodiment, the fixing cap 320 is provided with external threads, the charging port of the sampling barrel 500 is provided with internal threads, and the fixing cap 320 is detachably covered on the charging port through the matching of the threads. Of course, in this embodiment, the fixing cover 320 may be detachably covered on the charging opening by other methods, for example, by interference fit. In this embodiment, the fixing cover 320 is detachably connected to the sample chamber 200, so that the first driving part 340, the connecting rod 330 and the spiral feeding piece 310 can be conveniently taken out of the accommodating chamber, the sampling cut tobacco can be conveniently and rapidly added into the accommodating chamber of the sample chamber 200, and the first driving part 340, the connecting rod 330 and the spiral feeding piece 310 can be conveniently maintained.

In this embodiment, the first driving member 340 is specifically a driving motor, and an output shaft of the driving motor is fixedly connected to one end of the connecting rod 330 through the speed reducer 341. Wherein, the driving motor is fixedly arranged at one side of the fixed cover 320 facing the sample chamber 200, and the automatic weighing device may further comprise a speed reducer 341. The output shaft of the driving motor is connected with the input end of the speed reducer 341, the output end of the speed reducer 341 is fixedly connected with one end of the connecting rod 330, and under the action of the driving motor and the speed reducer 341, the connecting rod 330 drives the spiral feeding sheet 310 to rotate, so that the cut tobacco is sent out from the feed opening. The speed reducer 341 reduces the speed and increases the torque of the power output by the driving motor, so that the power can smoothly drive the spiral material feeding piece 310 to rotate.

In an alternative embodiment, the communication between the receiving chamber and the feed opening is funnel-shaped. That is, the lower end of the receiving chamber is funnel-shaped. In this embodiment, the diameter of the connecting rod 330 and the screw feeder 310 is reduced correspondingly in the funnel-shaped space to accommodate the funnel-shaped communication. The lower extreme through holding the cavity sets up to leaking hopper-shaped, can play the guide effect to the pipe tobacco to make smooth from the feed opening outflow of pipe tobacco, can not be detained in sample storehouse 200, guarantee in the sample storehouse 200 can not cause the ejection of compact difficulty because piling up of pipe tobacco. Simultaneously, funnel-shaped can be less with the feed opening design to the accurate control pipe tobacco flows out from the feed opening volume, further guarantees the accuracy of pipe tobacco sample weight, with the reliability of assurance detection data.

In an alternative embodiment, the automatic weighing device further comprises a switch 600, the switch 600 is fixedly arranged at the discharging opening, and the switch 600 controls the opening or closing of the discharging opening. In this embodiment, when the weight of pipe tobacco reached to set for weight in the sampling bucket 500, can close the feed opening through switch 600 for the pipe tobacco in sample storehouse 200 can not continue to flow out from the feed opening, thereby further guarantees the accuracy of sample.

Specifically, the switch 600 is a solenoid valve. It will be appreciated by those skilled in the art that other forms of switch 600 may be used, and in this embodiment a solenoid valve is used, which is simple and easy to control.

In an alternative embodiment, the sample station 400 is slidably attached to the base 120; the automatic weighing apparatus further includes a second driving unit 700, the second driving unit 700 being fixedly coupled to the support arm 110, and an output end of the second driving unit 700 being fixedly coupled to the sampling stage 400. It will be appreciated by those skilled in the art that the second driving member 700 may be a hydraulic cylinder or an air cylinder, and in this embodiment is preferably an air cylinder.

In this embodiment, when weight reaches the set weight, sampling bucket 500 leaves the below of feed opening rapidly under the effect of second drive component 700 to avoid closing the in-process at switch 600, a small amount of pipe tobacco falls into sampling bucket 500, thereby further increase the precision of weighing of pipe tobacco, with the reliability that increases pipe tobacco characteristic detection data.

It will be appreciated by those skilled in the art that, in the present embodiment, in order to prevent the second driving part 700 from dropping from the sample stage 400 due to inertia in the process of driving the sample stage 400 away from the feed opening, the sample barrel 500 is detachably and fixedly placed on the sample stage 400. For example, the removable member can be removably placed on the sampling platform 400 by a screw connection, an interference fit, or the like, and in this embodiment, the removable member is preferably removably placed in the sampling platform 400 by an interference fit.

Specifically, a blind hole has been seted up in the bottom of sampling bucket 500, is provided with a arch in the upper end of sample platform 400 is fixed, and when sampling bucket 500 placed on sample platform 400, blind hole and protruding interference fit to make sampling bucket 500 fix on sample platform 400, so, just avoided sampling bucket 500 in the in-process that moves along with sample platform 400, the risk that drops from sample platform 400. Simultaneously, because the arch that sets up on the sample platform 400 can also carry out the positioning action to sampling bucket 500, can guarantee that sampling bucket 500 when placing at every turn, all is located the feed opening under, guaranteed that the pipe tobacco can be accurate fall into sampling bucket 500. As will be understood by those skilled in the art, in order to facilitate the taking and placing of the sampling platform 400, in this embodiment, the protrusion disposed on the sampling platform 400 may be made of an elastic material or the outer surface of the protrusion is covered with a layer of elastic material, such as rubber. Therefore, the abrasion to the sampling barrel 500 in the process of taking and placing the sampling barrel 500 can be reduced, the sampling barrel 500 is protected, and the service life of the sampling barrel 500 is prolonged.

In an alternative embodiment, the automatic weighing apparatus further includes a recycling bin 800 and a recycling table 810, the recycling table 810 is slidably connected to the base 120, the recycling bin 800 is placed on the recycling table 810, and the output end of the second driving member 700 is further fixedly connected to the recycling table 810; the second driving part 700 drives the sampling stage 400 to move away from the discharge opening, and simultaneously drives the recycling stage 810 to move, so that the opening of the recycling bin 800 faces the discharge opening. In the process that switch 600 closes, inevitable have some pipe tobacco to flow out from the feed opening, in order to avoid waste, improve the utilization ratio of pipe tobacco, consequently still be provided with recycling bin 800 in this embodiment, when sampling bin 500 leaves the feed opening under the drive of second drive unit 700, drive recycling bin 800 and remove to feed opening below to collect the pipe tobacco that flows out from the feed opening in the switch 600 closing process. It can be understood by those skilled in the art that, in the embodiment, the recycling bin 800 is detachably disposed on the recycling platform 810, and the specific manner may refer to the connection manner of the sampling bin 500 and the sampling platform 400, which is not described herein again.

In an optional embodiment, the base 120 is provided with a sliding groove 121, sliding rails are disposed below the sampling platform 400 and the recovery platform 810, and the sampling platform 400 and the recovery platform 810 respectively slide in the sliding groove 121 through the respective sliding rails. In this embodiment, through setting up spout 121 and slide rail, can play the guide effect to the removal of sampling platform 400 and recovery platform 810 for sampling platform 400 and recovery platform 810 operate more steadily, thereby guarantee that the pipe tobacco in the sampling platform 400 can not remove the in-process again and drop, further guarantee the accuracy of sample, guarantee the reliability of pipe tobacco detection data.

In an alternative embodiment, the supporting arm 110 includes a base 111, a first arm 112 and a second arm 113, the base 111 is vertically and fixedly connected with the base 120, the first arm 112 and the second arm 113 are vertically and fixedly connected with the base 111, and the first arm 112 and the second arm 113 are parallel to the base 120; fixing holes 114 are formed in the ends, far away from the support 111, of the first arm 112 and the second arm 113, and the sample bin 200 is fixedly clamped in the fixing holes 114. In this embodiment, set up two arms of first arm 112 and second arm 113 and fix sample storehouse 200, can improve the stationary degree in sample storehouse 200, avoid spiral feed piece 310 to lead to rocking of sample storehouse 200 at rotatory in-process to can make the feed opening position firm, and then guarantee that the pipe tobacco can go into smoothly in the sampling bucket 500.

As shown in fig. 3, in an alternative embodiment, the automatic weighing apparatus is further provided with a central processor 1100 and an operation panel 900, the operation panel 900 is fixedly connected with the support 111, the central processor 1100 is electrically connected with the operation panel 900, the driving motor, the load cell 1000 and a switch 600 respectively, and the switch 600 is an electromagnetic valve. The sampling process of this embodiment is specifically that an operator presses a start button on the operation panel 900 to send a signal for starting sampling to the central processing unit 1100, the central processing unit 1100 receives the signal for starting sampling, controls the first driving part 340 to drive the rotary feeding piece to rotate and controls the electromagnetic valve to open, at this time, the cut tobacco flows out from the blanking port to the sampling barrel 500, during this process, the weighing sensor 1000 detects the total weight of the sampling barrel 500 in real time and sends the detected weight value to the central processing unit 1100, the central processing unit 1100 calculates the difference between the weight value and the net weight value of the sampling barrel 500, when the difference is equal to the set weight, the central processing unit 1100 sends signals to the first driving part 340, the electromagnetic valve and the second driving part 700 at the same time, so that the first driving part 340 stops driving, the electromagnetic valve is closed, and the second driving part 700 drives the sampling barrel 500 to be away from the blanking port, the recycling bin 800 is run under the feed opening to complete the sampling process. In the process, manual operation is not needed, and the sampling precision can be ensured.

It can be understood by those skilled in the art that the operation panel 900 may be a touch screen or a button, and in this embodiment, a touch screen is preferred, and an operator can input the weight of each sample through the touch screen, so that the operation is simple and convenient.

The construction, features and functions of the present application are described in detail in the embodiments illustrated in the drawings, but the present application is not limited to the embodiments illustrated in the drawings, and all equivalent embodiments modified or equivalent according to the concept of the present application are within the scope of the present application.

Claims

1. An automatic weighing device is characterized by comprising a rack, a sample bin, an automatic feeding mechanism, a sampling table, a weighing sensor and a sampling barrel;

the frame comprises a supporting arm and a base which are fixedly connected; the sample bin is fixedly connected with the supporting arm and is provided with an accommodating chamber and a feed opening communicated with the accommodating chamber; the automatic feeding mechanism comprises a spiral feeding sheet which is arranged in the accommodating cavity and can rotate in the accommodating cavity;

the sampling platform sets up on the base, weighing sensor with sampling platform fixed connection, the sample bucket is placed on the sampling platform, the opening orientation of sample bucket the feed opening.

2. The automatic weighing apparatus of claim 1, wherein the sample compartment is provided with a charging port, the charging port and the discharge port being located at opposite ends of the sample compartment.

3. The automatic weighing apparatus of claim 2, wherein the automatic feed mechanism further comprises a stationary cover, a connecting rod, and a first drive member;

the fixed cover is detachably covered on the feed inlet, and the first driving part is fixedly connected with one side, facing the sample bin, of the fixed cover; one end of the connecting rod is fixedly connected with the output end of the first driving part, the other end of the connecting rod extends into the accommodating cavity, and the spiral feeding piece is fixedly wound on the connecting rod.

4. The automatic weighing apparatus of claim 1, wherein the receiving chamber is funnel-shaped in communication with the discharge opening.

5. The automatic weighing device of claim 1, further comprising a switch fixedly disposed at the discharge opening, the switch controlling the opening or closing of the discharge opening.

6. The automatic weighing apparatus of claim 5, wherein the switch is a solenoid valve.

7. The automatic weighing apparatus of claim 1, wherein the sample station is slidably coupled to the base; the automatic weighing device also comprises a second driving part, the second driving part is fixedly connected with the supporting arm, and the output end of the second driving part is fixedly connected with the sampling platform.

8. The automatic weighing device according to claim 7, further comprising a recycling bin and a recycling table, wherein the recycling table is slidably connected to the base, the recycling bin is placed on the recycling table, and the output end of the second driving member is fixedly connected with the recycling table;

the second driving part drives the sampling platform to be far away from the feed opening, and simultaneously drives the recovery platform to move, so that the opening of the recovery barrel faces the feed opening.

9. The automatic weighing device of claim 8, wherein a sliding groove is formed in the base, sliding rails are arranged below the sampling platform and the recovery platform, and the sampling platform and the recovery platform respectively slide in the sliding groove through the respective sliding rails.

10. The automatic weighing apparatus of any one of claims 1-9, wherein the support arm comprises a pedestal, a first arm, and a second arm, the pedestal is vertically fixedly connected to the base, the first arm and the second arm are both vertically fixedly connected to the pedestal, and the first arm and the second arm are both parallel to the base;

the first arm and the second arm are far away from one end of the support and are provided with fixing holes, and the sample bin is fixedly clamped in the fixing holes.