CN202149808U

CN202149808U - Combined metering device

Info

Publication number: CN202149808U
Application number: CN201120269670U
Authority: CN
Inventors: 梁俊; 郑贻端
Original assignee: GUANGDONG HIGH DREAM INTELLECTUALIZED MACHINERY CO Ltd
Priority date: 2011-07-28
Filing date: 2011-07-28
Publication date: 2012-02-22
Anticipated expiration: 2021-07-28

Abstract

The utility model discloses a combined metering device comprising: a main vibrating disc arranged at an upper part of a main body middle base, a plurality of material processing units arranged with equal spaces on a circumference of the main body middle base, a material aggregating mechanism which is arranged below the material processing units and comprises an aggregating skewed slot and a material discharging disc, and a CPU (Central Processing Unit) for controlling related motions of the combined metering device; wherein the each material processing unit is provided with a linear vibrating disc, a buffering bucket and a weighing bucket comprising two weighing bunkers from top to bottom, and the each material processing unit is also provided with a weighing sensor; the weighing sensor is connected with the weighing buckets and the CPU; wherein the each material processing unit is also provided with a cell processor which can perform corrections to real residual weights of the materials in the weighing bunkers; and the weighing sensor, the cell processor and the CPU are connected in order. The combined metering device of the utility model can raise precision of the combined metering.

Description

A kind of combined metering device

Technical field

The utility model relates to the computation weigh field, is specifically related to a kind of combined metering device.

Background technology

The Combined metering blowing process of combined metering device is a rapid continual process.Material residual phenomenas such as sizing appear in the weighing material in weighing bucket when institute, and not only time actual weighing blowing weight is worked as in influence, and have influence on a series of Combined metering blowing weight in back, cause the blowing actual weight on the low side, have a strong impact on weighing precision.Therefore, zero-setting operation seems particularly important in the application of combined metering device.

Common combined metering device is meant by a plurality of to have a weighing device that the material processing unit of charging discharging structure independently constitutes, and contains a weighing bucket and a corresponding LOAD CELLS that is provided with in each material processing unit.

Because of the LOAD CELLS price comparatively high; Under the situation of degree of accuracy of guaranteeing to weigh; Utilization factor for the LOAD CELLS that improves the combination balance weighing bucket; Each weighing bucket is set to possess the structure of two feed bins of weighing, and will reduce the device fabrication cost greatly, and this combination balance that possesses two feed bins of weighing is used static zero setting method detailed process and is:

1, in a material processing cycle, two feed bins participate in making up blowing simultaneously on the same weighing bucket, then forbid feeding and carry out zero setting in the next material processing cycle;

Defective: such zero setting method will directly reduce by 2 gravimetric values of participating in the combination blowing, reduce the Combined metering precision greatly;

2, do not participate in simultaneously making up like two feed bins of weighing, then: a material is handled cycle T 1 and is finished, and one of them feed bin of weighing is participated in the emptying of combination blowing, and forbids next material processing cycle T 2 feedings; Another feed bin of weighing is handled cycle T 2 at next material forces to participate in the combination blowing, and forbids feeding; Get into the 3rd material and handle the equal emptying material of 3, two feed bins of weighing of cycle T, then carry out zero-setting operation.

Defective: two feed bins divide the material of two materials processing cycle emptyings and one of them feed bin of weighing to be forced participation combination blowing, expand influence to actual blowing gravimetric value that at least 3 materials are handled the cycles, have a strong impact on the Combined metering precision.

The utility model content

The technical matters that the utility model solves is to provide a kind of combined metering device, can in the same material processing cycle, not influence under the combinatorial weighing dispensing speed situation and accomplishes zero setting, has improved the Combined metering precision.

A kind of combined metering device, comprise the master who is arranged in the main body seat top shake dish, several material processing units that in main body, uniformly-spaced are provided with on the seat circumference, be disposed at the central processing unit that comprises gather materials mechanism and the control combination WT-MSR relevant action of gathering skewed slot and following charging tray below the said material processing unit; Wherein, the corresponding from top to down weighing bucket that wired dish that shakes, buffering bucket is set and has 2 feed bins of weighing of each said material processing unit, each said material processing unit also is provided with LOAD CELLS; Said LOAD CELLS is connected with said weighing bucket, said central processing unit; Wherein,

Each said material processing unit also is provided with the Cell processor that calculates the interior weight of material value of each feed bin of weighing and the real surplus weight of material in the said feed bin of weighing is proofreaied and correct; Said LOAD CELLS, said Cell processor and said central processing unit connect in order.

The utility model is set up Cell processor in each material processing unit; When LOAD CELLS obtains each feeding in the weighing bucket gravimetric value of material be sent to Cell processor, Cell processor during according to each feeding in the weighing bucket gravimetric value of material obtain the gravimetric value of material in the single feed bin of weighing and be sent to central processing unit; Behind the feed bin blowing of weighing of participating in optimum combination; Blowing situation according to 2 feed bins of weighing of each weighing bucket calculates theoretical residuals weight value; And the real surplus gravimetric value that combines LOAD CELLS to regain; Judge the real surplus weight of material in the weighing bucket whether to equal theoretical residuals weight (2 feed bins of weighing for example, establishing one of them weighing bucket A are a, b; The weight of material value of feed bin a, b of weighing is respectively M1, M2, after a material processing cycle finishes, and the emptying of a blowing; B is blowing not, and then the theoretical residuals weight of material is M2 in A weighing bucket this moment), if unequal; Then calculate the difference of interior material real surplus weight of weighing bucket and theoretical residuals weight, utilize this difference to proofread and correct this real surplus weight, and use this difference as initial null value; Nt wt net weight when being empty to the bucket-shaped attitude of weighing is proofreaied and correct, and accomplishes zero-setting operation; If equate, then need not proofread and correct; Through the zero setting of Cell processor, do not influence the combinatorial weighing dispensing speed, and in each material processing cycle, all feed bins of weighing are all participated in the material combination weighing, along with the increase of number of combinations, the Combined metering precision correspondingly improves; The minimizing of number of combinations, the Combined metering precision correspondingly reduces, and this is known rule.Compare Combined metering of the prior art; The utility model is not only promptly accomplished dynamic zero setting in a material processing cycle; Make the error effect scope drop to minimum; Guarantee the accuracy of actual blowing weight, and increased the feed bin of weighing of each material processing cycle participation Combined metering, improved the precision of Combined metering.

Control the blowing of the mechanism that gathers materials for ease, preferably, in the said mechanism that gathers materials, below said charging tray down, the set hopper is set, wherein said set hopper also is connected with said central processing unit.

For the storage that makes things convenient for data with read; Preferably; In each said material processing unit, the storer be connected with said cell processing is set, the weight of material value of each said weighing bucket and the gravimetric value of the single interior material of feed bin of weighing when being used to store each feeding.

In order combined metering device to be monitored intuitively, preferably, can also install the display controller that is connected with central processing unit additional.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is another structural representation of the utility model;

Fig. 3 is that a material of figure the utility model is handled the action timing diagram in cycle.

Embodiment

To combine accompanying drawing that the utility model is set forth below.

See also Fig. 1; At first introduce the disclosed a kind of combined metering device of the utility model, comprise the master who is arranged in the main body seat top shake dish Q1, several material processing units Q2 that in main body, uniformly-spaced is provided with on the seat circumference, be disposed at the central processing unit Q3 of gather materials mechanism and the control combination WT-MSR relevant action that comprise set skewed slot Q4 and following charging tray Q5 below the material processing unit Q2; Wherein, each material processing unit Q2 correspondence from top to down is provided with wired weighing bucket T3 that shakes dish T1, buffering bucket T2 and have 2 feed bins of weighing (T31 and T32), and each material processing unit Q2 also is provided with LOAD CELLS T4; LOAD CELLS T4 is connected with weighing bucket T3, central processing unit Q3; Wherein,

Each material processing unit Q2 also is provided with the Cell processor T5 that the real surplus weight of the interior material in symmetrical heavy burder storehouse (T31 or T32 or T31 and T32) is proofreaied and correct; LOAD CELLS T4, Cell processor T5 and central processing unit Q3 connect in order.

The utility model is set up Cell processor T5 in each material processing unit; LOAD CELLS T4 obtains the weight of material value of weighing bucket and is sent to Cell processor T5, and Cell processor T5 obtains the gravimetric value of material in the single feed bin of weighing and is sent to central processing unit Q3 according to the weight of material value of weighing bucket; Behind the feed bin blowing of weighing of participating in optimum combination; Blowing situation according to 2 feed bins of weighing of each weighing bucket T3 calculates theoretical residuals weight value, and the real surplus gravimetric value that combines LOAD CELLS to regain, and judges whether the real surplus weight of the interior material of weighing bucket (for example equals theoretical residuals weight; 2 feed bins of weighing of one of them weighing bucket T3 are T31, T32; Weighing, the gravimetric value of material is respectively M1, M2 in the feed bin T31, T32, after a material processing cycle finishes, and the emptying of T31 blowing; T32 is blowing not; Then the theoretical residuals weight value of material is M2 in weighing bucket T3 this moment), as if unequal, then calculate the difference of interior material real surplus weight of weighing bucket and theoretical residuals weight; Utilize this difference to proofread and correct this real surplus weight, and the nt wt net weight during for sky carry out zero setting to the bucket-shaped attitude of weighing as initial null value this difference; If equate, then need not proofread and correct; Handle the zero setting of the Cell processor in cycle through same material; Do not influence the combinatorial weighing dispensing speed, and in each material processing cycle, all feed bins of weighing are all participated in the material combination weighing; Along with the increase of number of combinations, the Combined metering precision correspondingly improves; The minimizing of number of combinations, the Combined metering precision correspondingly reduces, and this is known rule.Compare Combined metering of the prior art; The utility model is not only promptly accomplished dynamic zero setting in a material processing cycle; Make the error effect scope drop to minimum; Guarantee the accuracy of actual blowing weight, and increased the feed bin of weighing of each material processing cycle participation Combined metering, improved the precision of Combined metering.

The principle of work of the utility model comprises (1) to (5):

(1) Cell processor T5 control buffering bucket T2 carries out feeding to the state of each weighing bucket T3 for the empty feed bin of weighing (T31, or 32, or T31 and T32); LOAD CELLS T4 obtains the weight of material value of each weighing bucket T3, all material gravimetric values is sent to Cell processor T5 carries out rough handling, and subsequent cell processor T5 is sent to central processing unit Q3 to coherent signal; Wherein, the state of the weighing bucket or the feed bin of weighing does not have material for empty showing in the corresponding feed bin of weighing;

Wherein, the rough handling of Cell processor T5 is meant the weight of material value according to weighing bucket T3, obtains the gravimetric value of material in the single feed bin of weighing.

As a kind of embodiment; Handle the cycle at first material; 2 feed bin states of weighing are sky on the weighing bucket; One of them feed bin T31 that weighs that symmetry heavily struggles against among the T3 accomplishes feeding, does not have material on another feed bin T32 that weighs, this moment corresponding LOAD CELLS T4 to obtain the weight of material value of this weighing bucket be W1; Another state to same weighing bucket T3 carries out feeding for the empty feed bin T32 that weighs again; This moment corresponding LOAD CELLS T4 to obtain the weight of material value of this weighing bucket T3 be W2, LOAD CELLS T4 successively is sent to Cell processor T5 to gravimetric value W1 and W2 and carries out rough handling;

Cell processor T5 carries out analytical calculation to gravimetric value W1 and W2; Can obtain the weight of material value that this weighing bucket T3 goes up the single feed bin of weighing; The weight that obtains the interior material of feed bin T31 of weighing of feeding among this weighing bucket T3 at first is M1=W1, and weight of material is M2=W2-W1 in another feed bin T32 that weighs;

(2) central processing unit Q3 carries out combinatorial operation to the gravimetric value of material in the feed bin of weighing of all weighing bucket T3, and filters out to send the instruction of first blowing near the optimal set merging of goal-selling combination weight value to corresponding cells processor T5; Cell processor T5 receives the instruction of first blowing, opens each corresponding feed bin of weighing of optimum combination and carries out blowing to the mechanism that gathers materials.

(3) Cell processor T5 obtains the real surplus gravimetric value of material in the weighing bucket after blowing is accomplished through LOAD CELLS T4;

(4) Cell processor T5 calculates theoretical residuals weight value according to the blowing situation of 2 feed bins of weighing of each weighing bucket T3; And the real surplus gravimetric value that combines LOAD CELLS to regain; Whether the real surplus gravimetric value of judging material in each weighing bucket T3 equals theoretical residuals weight value; If it is unequal; Then calculate the difference of real surplus gravimetric value and theoretical residuals weight value, utilize this difference to proofread and correct the real surplus gravimetric value, and difference is advanced zero-setting operation to state for the nt wt net weight of the weighing bucket of sky as initial null value; If equate, then do not proofread and correct the real surplus gravimetric value and do not make zero-setting operation;

As a kind of preferred implementation, establish 2 feed bin T31 that weigh of one of them weighing bucket T3, T32; The weight of material value be respectively M1, M2:

After supposing the feed bin T31 participation optimal set merging blowing emptying of weighing of this weighing bucket T3; And the feed bin T32 that weighs does not participate in making up blowing; The theoretical residuals weight of material should equal the to weigh weight of material M2 of feed bin T32 in the weighing bucket T3 then, this moment LOAD CELLS to obtain the real surplus gravimetric value of material in this weighing bucket T3 be M2 ', Cell processor T5 is real surplus weight M2 ' and theoretical residuals weight M2 relatively; Like M2 ≠ M2 '; Then calculate two difference D=M2 '-M2 between the gravimetric value, and utilize this difference D that real surplus gravimetric value M2 ' is proofreaied and correct, and use this difference as initial null value; Nt wt net weight when being empty to the bucket-shaped attitude of weighing is proofreaied and correct, and accomplishes zero-setting operation; Like M2=M2 ', then do not carry out correct operation;

The feed bin T31 that weighs that supposes this weighing bucket T3 all participates in the feed bin combination blowing emptying of weighing of optimum combination with the feed bin T32 that weighs; Then the theoretical residuals weight of material is 0 in the weighing bucket T3; The real surplus gravimetric value of material is M0 in this weighing bucket of LOAD CELLS acquisition this moment T3; Cell processor T5 is real surplus weight M0 and theoretical residuals weight 0 relatively, when M0 ≠ 0, then this real surplus gravimetric value M0 is proofreaied and correct; And use this real surplus gravimetric value M0 as initial null value, the nt wt net weight of weighing bucket is proofreaied and correct; Like M0=0, then do not carry out correct operation.

(5) repeat aforesaid operations, finish up to Combined metering.

Among Fig. 1 or Fig. 2 embodiment, first material is handled the cycle: the state of all feed bins of weighing is for empty, and buffering bucket T2 carries out feeding to the feed bin of weighing of all weighing bucket T3; The second material processing cycle began; Handling the situation of the combination blowing in cycle can know according to a last material; The feed bin of weighing in the optimum combination when Cell processor T5 control buffering bucket T2 carries out feeding, is only carried out feeding to state for the empty feed bin of weighing by the blowing emptying.

In the utility model device practice, can correspondence be provided with packaging facilities in the exit of following charging tray Q5.Because of material draws off from weighing bucket, get into packaging facilities through the set skewed slot again with following charging tray, the material fall time is longer; Influence the running speed of packaging facilities; In order to improve blanking velocity, preferably, install a set hopper Q6 additional in the exit of following charging tray Q5 to packaging facilities; Material directly gets into packaging facilities from set hopper Q6, and packaging facilities waits for that the time that material draws off fully reduces greatly.As shown in Figure 2, set hopper Q6 is connected with central processing unit Q3, and set hopper Q6 that installs additional and set skewed slot Q4 constitute the new mechanism that gathers materials with following charging tray Q5.Set hopper Q6 receives after second blowing of central processing unit Q3 instructs and carries out blowing.Set hopper Q6 and Cell processor T5 carry out the step of weight correction and carry out simultaneously.Can not handle the cycle so that the utility model can not prolong material because of weighing bucket is proofreaied and correct like this;

Like Fig. 2; For the ease of the storage of the data of LOAD CELLS T4 with read; The weight of material value of each said weighing bucket and the weight of material value of the single feed bin of weighing when storing each feeding; Can also in each material processing unit Q2, storer T6 be set, storer T6 is connected with Cell processor T5.

Like Fig. 2, in order display controller Q7 to be installed intuitively to the monitoring of combined metering device, this display controller Q7 is connected with central processing unit Q3.

As shown in Figure 3, and to combine Fig. 2, T be that a material is handled the cycle, wherein, t1 is feeding stabilization time, accomplishes the feeding of weighing bucket T3 in the time at t1; T2 is for weighing the assembly time, and in the time, completion is to storage, the combination calculation of the feed bin weight of material value of weighing, weigh of material in each weighing bucket T3 and the operation that filters out optimum combination at t2; T3 weighs the feed bin blowing time, and in the time, Cell processor T5 receives first blowing instruction of central processing unit Q3, accomplishes the blowing to the feed bin of weighing of optimum combination at t3; T4 is correction time, accomplishes the correction to the feed bin of weighing (state is the empty feed bin of weighing) of participating in making up blowing in the time at t4; T5 accomplishes the blanking of material to packaging facilities for the blowing time of set hopper Q6 at t5 in the time, wherein t4 and t5 synchronization begin to carry out.

For better understanding the utility model, will be example with the concrete processing procedure that a material processing unit is handled the cycle at a material below, 2-3 introduces in conjunction with accompanying drawing:

1. when some material processing cycle T began, 2 feed bins of weighing were sky on the same weighing bucket, and it is 0g that corresponding LOAD CELLS obtains gravimetric value;

2. the main dish Q1 that shakes utilizes extensional vibration that the radial dispersion of material is supplied to the line dish T1 that shakes;

Line shake the dish T1 through radial vibration material is supplied to buffering bucket T2;

4. the one-sided sluice gate switch opens of buffering bucket T2 is the feed bin of weighing of the corresponding side of material feeding weighing bucket T3, at this symmetry heavy burder storehouse T31 feeding;

5. the feed bin T31 that weighs obtains feeding, and LOAD CELLS T4 obtains gravimetric value W1=12g, and this gravimetric value is sent to Cell processor T5, and Cell processor T5 temporarily is stored in storer T6 with this weight of material value;

6. line shakes dish T1 continuation to buffering bucket T2 supply material;

7. buffering bucket T2 opposite side sluice gate switch opens is the feed bin T32 feeding of weighing of weighing bucket opposite side;

8. the feed bin T32 that weighs obtains feeding, the weight of material stack, and it is W2=22g that LOAD CELLS T4 obtains gravimetric value, this gravimetric value also temporarily is stored in storer T6;

9. Cell processor T5 reads corresponding gravimetric value W1, W2 from storer T6, and calculates the feed bin T31 weight of material value M1=12g that weighs, the feed bin T32 weight of material value of weighing M2=22-12=10g;

10. weight of material value M1=12g, M2=10g temporarily are stored in the storer T6 in two feed bins that calculate, and are sent to central processing unit Q3 by place Cell processor T5, participate in combinatorial operation;

11. via the combinatorial operation of central processing unit Q3, the weight of material value M2=10g of the feed bin T32 that supposes to weigh is chosen as this material and handles one of participation optimum combination gravimetric value of cycle T;

12. Cell processor T5 obtains first blowing instruction of central processing unit Q3, controls the feed bin door switch of the feed bin T32 that weighs and opens the feed bin door, mechanism emits material to gathering materials; The feed bin T32 that weighs is drained, and the feed bin T31 that only weighs on the weighing bucket T3 has material; At this moment, Cell processor calculates the gravimetric value that theoretical residuals weight value should equal material in the feed bin T31 that weighs that step 10 deposits, promptly theoretical residuals weight value M1=12g;

13. subsequently, suppose that it is 12.5g that LOAD CELLS T4 obtains real surplus gravimetric value M1 ', reference theoretical residuals weight value M1=12g, obvious two gravimetric values are unequal;

14. startup correction program, Cell processor T5 calculate the difference D=12.5-12=0.5g of real surplus gravimetric value and theoretical residuals weight value;

15. utilize the difference D of real surplus gravimetric value and theoretical residuals weight value that the residuals weight value of step 13 gained is proofreaied and correct, the real surplus gravimetric value after the correction is 12g, equates with theoretical residuals weight value M1; Subsequently, as initial null value of following one-period, the nt wt net weight when being empty to weighing bucket T3 state is proofreaied and correct this difference D, and accomplishes zero-setting operation;

16. the material that step 12 is discharged is through skewed slot Q4, following charging tray Q5 gets into aggregate bin Q6;

17. receive the second blowing signal from central processing unit Q3 when the aggregate bin control gear, open the sluice gate of aggregate bin Q6, emit material to the packaging facilities of dividing into;

Finish 18. this material is handled cycle T, accomplish a material processing procedure.

In the utility model, when feeding was carried out in symmetrical heavy burder storehouse, another feed bin state of weighing then only carried out feeding to this state for empty another feed bin of weighing that belongs to a weighing bucket together for empty if one of them feed bin of weighing that belongs to a weighing bucket together has material.

Above-described the utility model embodiment does not constitute the qualification to the utility model protection domain.The modification of being done within any spirit and principle at the utility model, be equal to replacement and improvement etc., all should be included within the claim protection domain of the utility model.

Claims

1. combined metering device, comprise the master who is arranged at seat top in the main body shake dish, several material processing units that in main body, uniformly-spaced are provided with on the seat circumference, be disposed at the central processing unit that comprises gather materials mechanism and the control combination WT-MSR relevant action of gathering skewed slot and following charging tray below the said material processing unit; Wherein, the corresponding from top to down weighing bucket that wired dish that shakes, buffering bucket is set and has 2 feed bins of weighing of each said material processing unit, each said material processing unit also is provided with LOAD CELLS; Said LOAD CELLS is connected with said weighing bucket, said central processing unit; It is characterized in that,

2. combined metering device according to claim 1 is characterized in that, the said mechanism that gathers materials also comprises the set hopper of the below that is arranged on said following charging tray, and wherein said set hopper also is connected with said central processing unit.

3. combined metering device according to claim 1 and 2; It is characterized in that; Each said material processing unit also comprises the storer that is connected with said Cell processor, the gravimetric value of material in the weight of material value of each said weighing bucket and the single feed bin of weighing when being used to store each feeding.

4. combined metering device according to claim 3 is characterized in that said combined metering device also comprises the display controller that is connected with said central processing unit.