CN110395444B - Garlic grading weighing method - Google Patents

Garlic grading weighing method Download PDF

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Publication number
CN110395444B
CN110395444B CN201910820882.9A CN201910820882A CN110395444B CN 110395444 B CN110395444 B CN 110395444B CN 201910820882 A CN201910820882 A CN 201910820882A CN 110395444 B CN110395444 B CN 110395444B
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garlic
weighing
hopper
stepping motor
component
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CN110395444A (en
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孙良
童威
叶治政
周誉株
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B25/00—Packaging other articles presenting special problems
    • B65B25/02—Packaging agricultural or horticultural products
    • B65B25/04—Packaging fruit or vegetables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B37/00—Supplying or feeding fluent-solid, plastic, or liquid material, or loose masses of small articles, to be packaged
    • B65B37/16—Separating measured quantities from supply
    • B65B37/18—Separating measured quantities from supply by weighing

Abstract

The invention discloses a grading and weighing method for garlic. The existing garlic weighing and screening are carried out manually, and the efficiency is low. The invention constructs a garlic grading and weighing mechanism; when the garlic reaches the cross-shaped bracket, the first stepping motor rotates, the garlic falls into the discharge hopper, and the n-1 discharge hoppers of the weighing assemblies synchronously fall into the garlic; weighing garlic weight by each weighing sensor, judging whether the weight sum of any k garlic meets the m +/-5 g range by the control chip, if so, overturning the corresponding stepping motor II towards the hopper to enable the garlic on the k discharging hoppers to fall into the hopper for collection, otherwise, overturning the stepping motors II of all weighing assemblies back to the hopper, and pouring out the garlic on all weighing assemblies; and (3) feeding the discharge hoppers of all the weighing assemblies by rotating the stepping motors of all the feeding assemblies, and judging whether the sum of the weight of k garlic meets the range of m +/-5 g again. The garlic weighing and screening device realizes automatic weighing of garlic, sorts the garlic into a group with a certain weight, and improves the garlic weighing and screening efficiency.

Description

Garlic grading weighing method
Technical Field
The invention belongs to the technical field of machinery, relates to weighing and screening of garlic, and particularly relates to a garlic grading weighing method.
Background
For a long time, the weighing and screening processes of garlic are manually carried out, so that the garlic weighing and screening process is time-consuming and labor-consuming, has extremely low efficiency and often has deviation. At present, a garlic grading and weighing mechanism is urgently needed to replace the manual garlic sorting and packaging. The common packaging machines on the market weigh and package small particles such as corn kernels, tea leaves and the like, and have no weighing and sorting mechanism for agricultural products with larger shapes such as whole garlic.
Disclosure of Invention
The invention aims to provide a garlic grading weighing method aiming at automatically weighing and sorting garlic into a group with a certain weight and keeping the error within the regulation.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention specifically comprises the following steps:
step one, constructing a garlic grading and weighing mechanism; the garlic grading and weighing mechanism comprises a feeding device and a grading and weighing device. The feeding device comprises a feeding hopper, a bottom plate and a feeding assembly; the bottom plate is fixed with the frame; a cylindrical feed hopper is fixed on the bottom plate; coaxially arranged at the feedThe bottom of the round table in the hopper is fixed with the bottom plate; the inner wall of the feed hopper is fixedly connected with the circular truncated cone through n inclined plates which are uniformly distributed along the circumferential direction, wherein the inclined plates are obliquely arranged, and n is more than or equal to 8; the bottom plate is provided with a feeding hole between every two adjacent inclined plates; a feeding component is arranged below each feeding hole and comprises a circular tube, a cross-shaped bracket and a first stepping motor; the top end of the circular tube is fixed on the bottom plate, and the bottom end of the circular tube is fixed with a hollow motor base; the top end of the round pipe is communicated with the feed inlet, and the bottom end of the round pipe is communicated with the motor base; the bottom end of the motor base is arranged in an open mode; a base of the stepping motor I is fixed on a motor base; an output shaft of the first stepping motor penetrates into the motor base and is fixed with a cross-shaped support arranged in the motor base. The grading weighing device comprises a hopper and a weighing component; the funnel is hollow and inverted round table-shaped; the hopper is fixed on the frame and is arranged right below the feed hopper; a weighing component is arranged below each feeding component of the feeding device, and each weighing component comprises a discharge hopper, a weighing sensor support frame, a second stepping motor and a support plate; the top of the weighing sensor support frame is fixed with a discharge hopper, and the bottom of the weighing sensor support frame is fixed with a weighing sensor; a base of the second stepping motor is fixed on the supporting plate, and an output shaft of the second stepping motor is fixed with the weighing sensor supporting frame; an output shaft of the second stepping motor is arranged along the tangential direction of the position of the hopper where the weighing component is located; the discharging hopper is higher than the hopper, and two inclined planes symmetrically arranged about an output shaft of the second stepping motor are arranged in the discharging hopper; all the supporting plates of the weighing components are fixed on the outer wall of the funnel. The first stepping motor of each feeding assembly and the second stepping motor of each weighing assembly are controlled by a control chip, and the signal output end of the weighing sensor of each weighing assembly is connected with the control chip. The control chip respectively numbers the n-1 weighing components as A1，A2，…，An-1。
And step two, after the garlic is poured into the feed hopper, the garlic enters between every two adjacent inclined plates along the circular table and then respectively enters into each round tube, and the diameter of each round tube can only contain one garlic, so that the garlic is linearly arranged in each round tube. When the garlic reaches the cross-shaped bracket along the circular tube, the garlic falls between two arms of the cross-shaped bracket; the first step motor rotates 90 degrees to drive the cross-shaped support to rotate 90 degrees, garlic on the cross-shaped support originally falls out due to gravity and falls into the discharge hopper, and a new garlic falls into the cross-shaped support at the same time, so that controllable single blanking of the garlic is realized. The stepping motors of the n-1 feeding assemblies are controlled by the control chip to synchronously rotate, so that the garlic falls into the discharge hoppers of the n-1 weighing assemblies synchronously.
Step three, after the garlic falls into the discharge hopper, weighing the weight of the garlic by each weighing sensor, and transmitting signals to the control chip; then, judging whether the sum of the weight of any k garlic satisfies the range of m +/-5 g according to the following process, wherein the value of m is 150, 200, 250 or 300:
(1) the control chip calculates A first1，A2，…，AkWeighing the garlic on the component, wherein k is m/50; if A is1，A2，…，AkThe weight sum of garlic on the weighing component satisfies the range of m +/-5 g, and the A is controlled1，A2，…，AkThe second stepping motor of the weighing component turns 30 degrees towards the hopper, so that garlic on the corresponding k discharging hoppers falls into the hopper, and then the garlic is collected at the bottom of the hopper; the second stepping motor resets immediately after turning 30 degrees towards the funnel; for each weighing component for pouring out garlic, the control chip sends a signal to control a stepping motor of the corresponding feeding component to rotate 90 degrees, and a new garlic falls down; if the m + -5 g range is not satisfied, A iskThe garlic on the weighing component is changed into A in sequencek+1，Ak+2，…，An-1During the replacement process of the garlic on the weighing assemblies, as long as the weight sum of the garlic on the new k weighing assemblies meets the range of m +/-5 g, the replacement is stopped, the step motors of the corresponding k weighing assemblies are controlled to turn over towards the hopper by 30 degrees, so that the garlic on the corresponding k discharging hoppers falls into the hopper, and then the garlic is collected at the bottom of the hopper; the second stepping motor resets immediately after turning 30 degrees towards the funnel; for each weighing component for pouring out garlic, the control chip sends a signal to control a stepping motor of the corresponding feeding component to rotate 90 degrees, and a new garlic falls down; if A iskOn the weighing assemblyThe garlic is changed to An-1After weighing the garlic on the component, if the sum of the weights of the garlic on the k weighing components still does not satisfy the range of m +/-5 g, the component A is replaced according to the following replacing process1，A2，…，AkGarlic of the weighing assembly is replaced: firstly, A is mixed1，A2，…，AkSequentially replacing garlic on the penultimate weighing component in the weighing components with garlic Ak+1，Ak+2，…，An-1Weighing garlic on the assembly, and then adding A1，A2，…，AkThe garlic on the last weighing component in the weighing components is changed into A in sequencek+1，Ak+2，…，An-1Weighing garlic on the assembly until A1，A2，…，AkIn the weighing assembly A1The garlic on the weighing component is changed into A in sequencek+1，Ak+2，…，An-1Weighing garlic on the assembly; in the replacement process, as long as the weight sum of the garlic on the new k weighing components meets the m +/-5 g range, the replacement is stopped, the step motors II of the corresponding k weighing components are controlled to turn over 30 degrees towards the hopper, so that the garlic on the corresponding k discharging hoppers falls into the hopper, and then the garlic is collected at the bottom of the hopper; the second stepping motor resets immediately after turning 30 degrees towards the funnel; for each weighing assembly for pouring out garlic, the control chip sends a signal to control the stepping motor of the corresponding feeding assembly to rotate 90 degrees, and a new garlic falls down.
(2) If finally calculate to An-k，An-k+1，…，An-1If the sum of the garlic weights on the weighing components still does not meet the range of m +/-5 g, the control chip controls the two stepping motors of all the weighing components to turn over the hopper by 30 degrees in a back-to-back mode, and the garlic on all the weighing components is poured out; the second stepping motor is reset immediately after being turned over by 30 degrees back to the funnel; and (3) controlling the stepping motors of all the feeding assemblies to rotate 90 degrees by the control chip, blanking the discharge hoppers of all the weighing assemblies, and returning to the step (1).
Furthermore, the internal resistance of the weighing sensor changes after the weighing sensor is stressed, so that the voltage is changed; the control chip performs ADC conversion on the received analog voltage value to convert the analog voltage value into a digital voltage value, and the digital voltage value and the weight of the garlic are in a linear relation, so that the weight of the garlic is obtained.
Furthermore, when garlic on the k weighing components needs to be poured into the funnel, the control chip enables the stepping motors II of the weighing components to rotate from small to large according to the numbers at intervals of 0.5s, and the garlic is poured into the funnel one by one.
The invention has the following beneficial effects:
the garlic weighing and screening device realizes automatic weighing of garlic, sorts the garlic into a group with a certain weight, saves labor force in the garlic weighing and screening process, and improves efficiency.
Drawings
FIG. 1 is a perspective view of the garlic grading and weighing mechanism of the present invention;
FIG. 2 is a perspective view of the feeding device of the present invention;
FIG. 3 is a schematic view of a feed assembly of the present invention
FIG. 4 is a perspective view of the construction of the step weighing apparatus of the present invention;
FIG. 5 is a perspective view of the weighing assembly of the present invention;
FIG. 6 is a flow chart of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 6, the garlic grading and weighing method is as follows:
step one, constructing a garlic grading and weighing mechanism; the garlic grading and weighing mechanism comprises a feeding device 1 and a grading and weighing device 2.
As shown in fig. 1, 2 and 3, the feeding device 1 comprises a feed hopper support frame 4, a feed hopper 5, a bottom plate and a feeding assembly; the feed hopper supporting frame 4 is X-shaped and is fixed on the frame 3; the bottom plate is fixed on the feed hopper supporting frame 4; a cylindrical feed hopper 5 is fixed on the bottom plate; the bottom of a circular truncated cone coaxially arranged in the feed hopper 5 is fixed with the bottom plate, and the included angle between the generatrix of the circular truncated cone and the horizontal plane is 60 degrees; the inner wall of the feed hopper 5 is fixedly connected with the circular truncated cone through eleven inclined plates which are uniformly distributed along the circumferential direction and are obliquely arranged at 75 degrees; the bottom plate is provided with a feeding hole between every two adjacent inclined plates; a feeding component is arranged below each feeding hole and comprises a circular pipe, a cross-shaped bracket 6 and a first stepping motor 7; the circular tube is obliquely arranged at an angle of 60 degrees; the top end of the circular tube is fixed on the bottom plate, and the bottom end of the circular tube is fixed with a hollow motor base; the top end of the round pipe is communicated with the feed inlet, and the bottom end of the round pipe is communicated with the motor base; the bottom end of the motor base is arranged in an open mode; the base of the first stepping motor 7 is fixed on the motor base; an output shaft of the first stepping motor penetrates into the motor base and is fixed with a cross-shaped support 6 arranged in the motor base. The stepping motor rotates 90 degrees to drive the cross-shaped bracket 6 to rotate 90 degrees, thereby driving the garlic to fall one by one.
As shown in fig. 4 and 5, the graduated weighing device 2 comprises a hopper 8 and a weighing assembly; the funnel 8 is hollow and inverted round table-shaped; the hopper 8 is fixed on the frame 3 and is arranged right below the feed hopper 5; a weighing component is arranged below each feeding component of the feeding device 1 and comprises a discharge hopper 9, a weighing sensor 10, a weighing sensor support frame 11, a second stepping motor 12 and a support plate; the top of the weighing sensor support frame 11 is fixed with the discharge hopper 9, and the bottom is fixed with the weighing sensor 10; a base of the second stepping motor 12 is fixed on the supporting plate, and an output shaft of the second stepping motor 12 is fixed with the weighing sensor supporting frame 11; an output shaft of the second stepping motor 12 is arranged along the tangential direction of the position of the hopper 8 where the weighing component is located; the discharging hopper 9 is higher than the hopper 8, and two inclined planes symmetrically arranged about an output shaft of the second stepping motor 12 are arranged in the discharging hopper 9; all the supporting plates of the weighing components are fixed on the outer wall of the funnel 8; the funnel is used for collecting the screened garlic.
The first stepping motor 7 of each feeding assembly and the second stepping motor 12 of each weighing assembly are controlled by a control chip, and the signal output end of the weighing sensor of each weighing assembly is connected with the control chip. The ten weighing components are respectively numbered by the control chip as A1、A2、A3、A4、A5、A6、A7、A8、A9And A10。
And step two, after the garlic is poured into the feed hopper, the garlic enters between every two adjacent inclined plates along the circular table and then enters 10 circular tubes respectively, and the diameter of each circular tube can only contain one garlic, so that the garlic is linearly arranged in each circular tube. When the garlic reaches the cross-shaped bracket along the circular tube, the garlic falls between two arms of the cross-shaped bracket; the first step motor rotates 90 degrees to drive the cross-shaped support to rotate 90 degrees, garlic on the cross-shaped support originally falls out due to gravity and falls into the discharge hopper, and a new garlic falls into the cross-shaped support at the same time, so that controllable single blanking of the garlic is realized. The first stepping motors of the ten feeding assemblies are controlled by a control chip (the embodiment adopts an STM32 single chip microcomputer) to synchronously rotate, so that garlic can synchronously fall into the discharge hoppers of the ten weighing assemblies.
Step three, after the garlic falls into the discharge hopper, weighing the weight of the garlic by each weighing sensor, and transmitting signals to the control chip; the weighing sensor is subjected to pressure, and then the internal resistance changes, so that the voltage is changed; the control chip performs ADC conversion on the received analog voltage value to convert the analog voltage value into a digital voltage value, and the digital voltage value and the weight of the garlic are in a linear relation, so that the weight of the garlic is obtained. Then, whether the weight sum of any six garlic meets the range of 300 +/-5 g is judged according to the following process:
(1) the control chip calculates A first1、A2、A3、A4、A5、A6Weighing garlic on the component, and controlling A if the weight sum of garlic on the weighing component meets the range of 300 +/-5 g1、A2、A3、A4、A5、A6The second stepping motor of the weighing component turns 30 degrees towards the hopper, garlic on the corresponding six discharging hoppers falls into the hopper, and then the garlic is collected at the bottom of the hopper; the second stepping motor resets immediately after turning 30 degrees towards the funnel; for each weighing component for pouring out garlic, the control chip sends a signal to control a stepping motor of the corresponding feeding component to rotate 90 degrees, and a new garlic falls down; if the weight of garlic does not meet the range of 300 +/-5 g, the garlic on the last weighing assembly is sequentially replaced by A7、A8、A9Or A10During the replacement of the garlic on the weighing components, as long as the weight sum of the garlic on the new six weighing components meets the range of 300 +/-5 g, the replacement is stopped, and the corresponding six weighing components are controlledThe second stepping motor of the weighing component turns 30 degrees towards the hopper, garlic on the corresponding six discharging hoppers falls into the hopper, and then the garlic is collected at the bottom of the hopper; the second stepping motor resets immediately after turning 30 degrees towards the funnel; for each weighing component for pouring out garlic, the control chip sends a signal to control a stepping motor of the corresponding feeding component to rotate 90 degrees, and a new garlic falls down; if the garlic on the last weighing assembly is replaced by A10After weighing the garlic on the components, if the sum of the weights of the garlic on the six weighing components still does not meet the range of 300 +/-5 g, the garlic A is replaced according to the following replacing process1、A2、A3、A4、A5、A6Garlic of the weighing assembly is replaced: firstly, A is mixed1、A2、A3、A4、A5、A6The penultimate weighing component in the weighing components (A)5Weighing component) to be replaced by A8、A9Or A10Weighing garlic on the assembly, and then adding A1、A2、A3、A4、A5、A6The third last weighing component of the weighing components (A)5Weighing component) to be replaced by A8、A9Or A10Weighing garlic on the assembly until A1、A2、A3、A4、A5、A6The first weighing component (A) in the weighing component1Weighing component) to be replaced by A8、A9Or A10Weighing garlic on the assembly; in the replacement process, as long as the weight sum of the garlic on the new six weighing assemblies meets the range of 300 +/-5 g, the replacement is stopped, the step motors II of the corresponding six weighing assemblies are controlled to turn over 30 degrees towards the hopper, so that the garlic on the corresponding six discharging hoppers falls into the hopper, and then the garlic is collected at the bottom of the hopper; the second stepping motor resets immediately after turning 30 degrees towards the funnel; for each weighing assembly for pouring out garlic, the control chip sends a signal to control the stepping motor of the corresponding feeding assembly to rotate 90 degrees, and a new garlic falls down.
When the garlic on the six weighing components needs to be poured into the funnel, in order to prevent the garlic from blocking a discharge hole of the funnel when the garlic is poured into the funnel, the control chip enables the second stepping motors of the weighing components to rotate from small to large according to the numbers at intervals of 0.5s, and the garlic is poured into the funnel one by one.
(2) If finally calculate to A5，A6，A7，A8，A9，A10If the sum of the garlic weights on the weighing components still does not meet the range of 300 +/-5 g, the control chip controls the two stepping motors of all the weighing components to turn over 30 degrees back to the hopper, and the garlic on all the weighing components is poured out; the second stepping motor is reset immediately after being turned over by 30 degrees back to the funnel; and (3) controlling the stepping motors of all the feeding assemblies to rotate 90 degrees by the control chip, blanking the discharge hoppers of all the weighing assemblies, and returning to the step (1).

Claims (3)

1. The garlic grading and weighing method is characterized by comprising the following steps: the method comprises the following specific steps:
step one, constructing a garlic grading and weighing mechanism; the garlic grading and weighing mechanism comprises a feeding device and a grading and weighing device; the feeding device comprises a feeding hopper, a bottom plate and a feeding assembly; the bottom plate is fixed with the frame; a cylindrical feed hopper is fixed on the bottom plate; the bottom of the circular truncated cone coaxially arranged in the feed hopper is fixed with the bottom plate; the inner wall of the feed hopper is fixedly connected with the circular truncated cone through n inclined plates which are uniformly distributed along the circumferential direction, wherein the inclined plates are obliquely arranged, and n is more than or equal to 8; the bottom plate is provided with a feeding hole between every two adjacent inclined plates; a feeding component is arranged below each feeding hole and comprises a circular tube, a cross-shaped bracket and a first stepping motor; the top end of the circular tube is fixed on the bottom plate, and the bottom end of the circular tube is fixed with a hollow motor base; the top end of the round pipe is communicated with the feed inlet, and the bottom end of the round pipe is communicated with the motor base; the bottom end of the motor base is arranged in an open mode; a base of the stepping motor I is fixed on a motor base; an output shaft of the first stepping motor penetrates into the motor base and is fixed with a cross-shaped bracket arranged in the motor base; the grading weighing device comprises a hopper and a weighing component; the funnel is hollow and inverted round table-shaped; the funnel is fixed on the frame, and the funnel is fixed on the frame,and is arranged under the feed hopper; a weighing component is arranged below each feeding component of the feeding device, and each weighing component comprises a discharge hopper, a weighing sensor support frame, a second stepping motor and a support plate; the top of the weighing sensor support frame is fixed with a discharge hopper, and the bottom of the weighing sensor support frame is fixed with a weighing sensor; a base of the second stepping motor is fixed on the supporting plate, and an output shaft of the second stepping motor is fixed with the weighing sensor supporting frame; an output shaft of the second stepping motor is arranged along the tangential direction of the position of the hopper where the weighing component is located; the discharging hopper is higher than the hopper, and two inclined planes symmetrically arranged about an output shaft of the second stepping motor are arranged in the discharging hopper; all the supporting plates of the weighing components are fixed on the outer wall of the funnel; the first stepping motor of each feeding assembly and the second stepping motor of each weighing assembly are controlled by a control chip, and the signal output end of a weighing sensor of each weighing assembly is connected with the control chip; the control chip respectively numbers the n weighing components as A1，A2，…，An；
Step two, after the garlic is poured into the feed hopper, the garlic enters between every two adjacent inclined plates along the circular table and then respectively enters into each round tube, and the diameter of each round tube can only contain one garlic, so that the garlic is linearly arranged in each round tube; when the garlic reaches the cross-shaped bracket along the circular tube, the garlic falls between two arms of the cross-shaped bracket; when the stepping motor rotates 90 degrees, the cross-shaped bracket is driven to rotate 90 degrees, garlic on the original cross-shaped bracket falls out due to gravity and falls into the discharge hopper, and a new garlic falls into the cross-shaped bracket at the same time, so that controllable single garlic discharge is realized; the first stepping motors of the n feeding assemblies are controlled by the control chip to synchronously rotate, so that garlic can synchronously fall into the discharge hoppers of the n weighing assemblies;
step three, after the garlic falls into the discharge hopper, weighing the weight of the garlic by each weighing sensor, and transmitting signals to the control chip; then, judging whether the sum of the weight of any k garlic satisfies the range of m +/-5 g according to the following process, wherein the value of m is 150, 200, 250 or 300:
(1) the control chip calculates A first1，A2，…，AkOf garlic on weighing unitsWeight sum, k = m/50; if A is1，A2，…，AkThe weight sum of garlic on the weighing component satisfies the range of m +/-5 g, and the A is controlled1，A2，…，AkThe second stepping motor of the weighing component turns 30 degrees towards the hopper, so that garlic on the corresponding k discharging hoppers falls into the hopper, and then the garlic is collected at the bottom of the hopper; the second stepping motor resets immediately after turning 30 degrees towards the funnel; for each weighing component for pouring out garlic, the control chip sends a signal to control a stepping motor of the corresponding feeding component to rotate 90 degrees, and a new garlic falls down; if the m + -5 g range is not satisfied, A iskThe garlic on the weighing component is changed into A in sequencek+1，Ak+2，…，AnDuring the replacement process of the garlic on the weighing assemblies, as long as the weight sum of the garlic on the new k weighing assemblies meets the range of m +/-5 g, the replacement is stopped, the step motors of the corresponding k weighing assemblies are controlled to turn over towards the hopper by 30 degrees, so that the garlic on the corresponding k discharging hoppers falls into the hopper, and then the garlic is collected at the bottom of the hopper; the second stepping motor resets immediately after turning 30 degrees towards the funnel; for each weighing component for pouring out garlic, the control chip sends a signal to control a stepping motor of the corresponding feeding component to rotate 90 degrees, and a new garlic falls down; if A iskThe garlic on the weighing component is replaced by AnAfter weighing the garlic on the component, if the sum of the weights of the garlic on the k weighing components still does not satisfy the range of m +/-5 g, the component A is replaced according to the following replacing process1，A2，…，AkGarlic of the weighing assembly is replaced: firstly, A is mixed1，A2，…，AkSequentially replacing garlic on the penultimate weighing component in the weighing components with garlic Ak+1，Ak+2，…，AnWeighing garlic on the assembly, and then adding A1，A2，…，AkThe garlic on the last weighing component in the weighing components is changed into A in sequencek+1，Ak+2，…，AnWeighing garlic on the assembly until A1，A2，…，AkIn the weighing assembly A1The garlic on the weighing component is changed into A in sequencek+1，Ak+2，…，AnWeighing garlic on the assembly; in the replacement process, as long as the weight sum of the garlic on the new k weighing components meets the m +/-5 g range, the replacement is stopped, the step motors II of the corresponding k weighing components are controlled to turn over 30 degrees towards the hopper, so that the garlic on the corresponding k discharging hoppers falls into the hopper, and then the garlic is collected at the bottom of the hopper; the second stepping motor resets immediately after turning 30 degrees towards the funnel; for each weighing component for pouring out garlic, the control chip sends a signal to control a stepping motor of the corresponding feeding component to rotate 90 degrees, and a new garlic falls down;
(2) if finally calculate to An-k，An-k+1，…，AnIf the sum of the garlic weights on the weighing components still does not meet the range of m +/-5 g, the control chip controls the two stepping motors of all the weighing components to turn over the hopper by 30 degrees in a back-to-back mode, and the garlic on all the weighing components is poured out; the second stepping motor is reset immediately after being turned over by 30 degrees back to the funnel; and (3) controlling the stepping motors of all the feeding assemblies to rotate 90 degrees by the control chip, blanking the discharge hoppers of all the weighing assemblies, and returning to the step (1).
2. The garlic grading weighing method according to claim 1, wherein: the internal resistance of the weighing sensor changes after being stressed, so that the voltage is changed; the control chip performs ADC conversion on the received analog voltage value to convert the analog voltage value into a digital voltage value, and the digital voltage value and the weight of the garlic are in a linear relation, so that the weight of the garlic is obtained.
3. The garlic grading weighing method according to claim 1, wherein: when the garlic on the k weighing components needs to be poured into the funnel, the control chip enables the stepping motors II of the weighing components to rotate from small to large according to the numbers at intervals of 0.5s, and the garlic is poured into the funnel one by one.
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CN203732144U (en) * 2014-01-08 2014-07-23 上海大和衡器有限公司 Feed device used for combined scale
CN108369133B (en) * 2015-12-17 2020-02-07 大和制衡株式会社 Combined scale
CN206456625U (en) * 2017-02-09 2017-09-01 连云港市金信包装有限公司 The servicing unit packed for bottle cap
CN109677680B (en) * 2018-11-28 2021-05-25 江苏大学 Same-machine continuous bagging mechanism for orderly harvesting leaf vegetables and implementation method
CN109632063A (en) * 2019-01-07 2019-04-16 广东勇锋电子科技有限公司 A kind of easily adjusting, easy-to-dismount combination balance
CN110155746A (en) * 2019-06-05 2019-08-23 中山市嘉威包装机械有限公司 A kind of rotary feeding combination balance

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