CN105096054B - Injection molding machine administrative decision method based on equipment complex ability and overall equipment efficiency.comprehensive efficiency of equipment - Google Patents
Injection molding machine administrative decision method based on equipment complex ability and overall equipment efficiency.comprehensive efficiency of equipment Download PDFInfo
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Abstract
The injection molding machine administrative decision method based on equipment complex ability and overall equipment efficiency.comprehensive efficiency of equipment that the invention discloses a kind of, comprising: evaluated according to the equipment complex ability of equipment dependability index, product quality indicator and device energy conservation index to injection molding machine；The overall equipment efficiency.comprehensive efficiency of equipment of injection molding machine is evaluated, and constructs the two-dimentional decision matrix being made of the equipment complex ability and overall equipment efficiency.comprehensive efficiency of equipment evaluated；The capacity loss reason in production is identified according to the two-dimentional decision matrix of building, and injection molding machine administrative decision is carried out according to the result of identification.Invention increases equipment complex merit ratings, science comprehensively evaluates the equipment complex ability of injection molding machine in terms of product quality, equipment dependability and energy saving three, and the capacity loss reason in production is identified by the comprehensive analysis of overall equipment efficiency.comprehensive efficiency of equipment and equipment complex ability, it is more scientific, comprehensive and objective to provide management decision-making support.It the composite can be widely applied to device management method field.
Description
Technical field
It is especially a kind of based on equipment complex ability and overall equipment efficiency.comprehensive efficiency of equipment the present invention relates to device management method field
Injection molding machine administrative decision method.
Background technique
In the traditional manufacture including Injection Industry, the device management method of most original mainly uses Plant in good condition
Rate and failure rate index cannot react to guarantee the intact of equipment and control the failure of equipment with certain limitation comprehensively
The service efficiency situation of equipment.It is currently overall equipment efficiency.comprehensive efficiency of equipment management method by whole world widely used device management method.
Overall equipment efficiency.comprehensive efficiency of equipment (Overall Equipment Effectiveness, i.e. OEE), essence is the practical production capacity of single device
With the ratio of its theoretical production capacity, overall equipment efficiency.comprehensive efficiency of equipment reflects the three classes loss of production capacity in actual production, comprising: because of equipment therefore
The loss of downtime caused by barrier, shortage of raw materials etc., because of equipment attrition, material is unqualified, produces speed caused by human error
Degree loss, and because product it is unqualified caused by mass loss.Overall equipment efficiency.comprehensive efficiency of equipment is more scientific than traditional measure, can
To provide reference to improve equipment service efficiency, development equipment management, reducing equipment effectiveness loss, thus by international wide
General application.According to the standard of international uniform, the index of world-class manufacturing industry, overall equipment efficiency.comprehensive efficiency of equipment should be greater than 85%.From mesh
From the point of view of preceding domestic enterprise's incomplete statistics data, although the overall equipment efficiency.comprehensive efficiency of equipment difference of different industries is larger, on the whole, if
Standby overall efficiency is about 70% or so, still in lower level.Overall equipment efficiency.comprehensive efficiency of equipment as a kind of independent measuring tool,
What it was measured is ratio of the practical production capacity of certain equipment relative to its theoretical production capacity, and what it was calculated is when shutting down present in production
Between loss, speed of production loss and mass loss these three types loss.However, every a kind of loss in above-mentioned three classes loss all includes
The influence of the multiple factors such as people, machine, material, so single overall equipment efficiency.comprehensive efficiency of equipment concept can only measure the size of capacity loss,
It can not isolate the reason of causing capacity loss.Overall equipment efficiency.comprehensive efficiency of equipment can provide certain reference to improve device efficiency, but
As for device efficiency is improved in terms of which of " man-machine material method ring ", overall equipment efficiency.comprehensive efficiency of equipment just can no longer provide reference, have
Certain limitation.
Summary of the invention
In order to solve the above-mentioned technical problem, the object of the present invention is to provide a kind of scientific, comprehensive and objective, based on setting
The injection molding machine administrative decision method of standby integration capability and overall equipment efficiency.comprehensive efficiency of equipment.
The technical solution adopted by the present invention to solve the technical problems is:
Injection molding machine administrative decision method based on equipment complex ability and overall equipment efficiency.comprehensive efficiency of equipment, comprising:
S1, the equipment complex according to equipment dependability index, product quality indicator and device energy conservation index to injection molding machine
Ability is evaluated；
S2, the overall equipment efficiency.comprehensive efficiency of equipment of injection molding machine is evaluated, and constructs the equipment complex energy force-summing device by evaluating
The two-dimentional decision matrix that overall efficiency is constituted；
S3, the capacity loss reason in production is identified according to the two-dimentional decision matrix of building, and according to the result of identification
Carry out injection molding machine administrative decision.
Further, the equipment dependability index is failure rate, and the product quality indicator is Measure of Process Capability Cpk, institute
Stating device energy conservation index is consumption rate.
Further, the step S1 comprising:
S11, the evaluation criterion for determining equipment dependability index, product quality indicator and device energy conservation index；
S12, the weight matrix for determining equipment dependability index, product quality indicator and device energy conservation index；
S13, the fuzzy evaluating matrix being made of degree of membership is determined according to evaluation criterion；
S14, weight matrix is multiplied with fuzzy evaluating matrix, obtains grade evaluations matrix, and according to grade evaluations matrix
Determine the equipment complex ability rating of injection molding machine.
Further, the step S12 comprising:
S121, by expert to equipment dependability index, product quality indicator and these three indexs of device energy conservation index into
Row assigns power；
S122, the entitled result of expert is analyzed with analytic hierarchy process (AHP), finally obtains equipment dependability index, produces
The weight matrix W={ 0.45,0.33,0.22 } of quality figureofmerit and device energy conservation index, wherein 0.45 is equipment dependability
The weight of index, 0.33 is the weight of product quality indicator, and 0.22 is the weight of device energy conservation index.
Further, the step S13 comprising:
S131, evaluation points set and opinion rating set, the evaluation points set U and opinion rating set V are established
Expression formula be respectively as follows:
U={ ui| i=1,2,3 }={ u1,u2,u3, V={ vj| j=1,2,3 }={ v1,v2,v3, wherein u1For failure
Rate, u2For Cpk, u3For consumption rate, v1For height, v2For in, v3It is low；
S132, different evaluation factor u is establishediTo different evaluation grade vjMembership function vj(ui)；
S133, the membership function v according to foundationj(ui) the fuzzy evaluating matrix R that obtains being made of degree of membership, it is described fuzzy
The expression formula of evaluations matrix R are as follows:
Further, the membership function v of the foundationj(ui) it include failure rate u1Respectively to opinion rating v1、v2And v3Person in servitude
Membership fuction v1(u1)、v2(u1) and v3(u1), represent CpkU2U respectively2Respectively to opinion rating v1、v2And v3Membership function v1
(u2)、v2(u2) and v3(u2), consumption rate u3Respectively to opinion rating v1、v2And v3Membership function v1(u3)、v2(u3) and v3
(u3), the membership function v1(u1)、v2(u1) and v3(u1) expression formula are as follows:
The membership function v1(u2)、v2(u2) and v3(u2) expression formula are as follows:
The membership function v1(u3)、v2(u3) and v3(u3) expression formula are as follows:
Further, the step S14 comprising:
S141, weight matrix W is multiplied with fuzzy matrix R, obtains grade evaluations matrix B, the grade evaluations matrix B's
Expression formula are as follows: B=WR=(b1,b2,b3)；
B in S142, comparison scale evaluations matrix B1、b2And b3The size of these three elements, and according in these three elements
Maximum value determines the equipment complex ability rating of injection molding machine.
Further, the step S142, specifically:
B in comparison scale evaluations matrix B1、b2And b3The size of these three elements, if the maximum value in these three elements is
b1, then the equipment complex ability rating of injection molding machine is height；If the maximum value in these three elements is b2, then the equipment of injection molding machine is comprehensive
It closes during ability rating is；If the maximum value in these three elements is b3, then the equipment complex ability rating of injection molding machine is low.
Further, the step S2 comprising:
S21, judge whether the overall equipment efficiency.comprehensive efficiency of equipment of injection molding machine is higher than 85%, if so, the overall equipment efficiency.comprehensive efficiency of equipment evaluated
Grade be height, conversely, the grade of the overall equipment efficiency.comprehensive efficiency of equipment then evaluated be it is low；
The two-dimentional decision matrix that S22, building are made of the equipment complex ability and overall equipment efficiency.comprehensive efficiency of equipment evaluated.
Further, the step S3, specifically:
It is identified in production according to the specific grade of equipment complex ability and overall equipment efficiency.comprehensive efficiency of equipment in two-dimentional decision matrix
Capacity loss reason, and injection molding machine administrative decision is carried out according to the result of identification:
If the grade of equipment complex ability be low and overall equipment efficiency.comprehensive efficiency of equipment grade be it is low, alarm because machine performance difference due to
Cause production efficiency low, and stops production at once and carry out machine performance improvement；
If the grade of equipment complex ability be in and overall equipment efficiency.comprehensive efficiency of equipment grade be it is low, check the low original of production efficiency
Because being that equipment complex performance is general or equipment is abnormal with other factor appearance；
If the grade of equipment complex ability be high and the grade of overall equipment efficiency.comprehensive efficiency of equipment be it is low, alarm machine it is functional but
Because equipment with other factor there are serious problems due to cause production efficiency low；
If the grade of equipment complex ability is that low and overall equipment efficiency.comprehensive efficiency of equipment grade is height, alarm is excessive because machine consumes energy
And cause cost excessively high, it is badly in need of improving the energy saving of machine；
If the grade of equipment complex ability be in and overall equipment efficiency.comprehensive efficiency of equipment grade be it is high, show equipment with other factor without
Problem, need to check whether emphatically causes production efficiency low because of the energy saving sexual abnormality of machine；
If the grade of equipment complex ability is that high and overall equipment efficiency.comprehensive efficiency of equipment grade is height, current state should be maintained to continue
It is produced.
The beneficial effects of the present invention are: equipment complex merit rating is increased on the basis of overall equipment efficiency.comprehensive efficiency of equipment evaluation,
Science comprehensively evaluates the equipment complex ability of injection molding machine in terms of product quality, equipment dependability and energy saving three, and
The capacity loss reason in production is identified by the comprehensive analysis of overall equipment efficiency.comprehensive efficiency of equipment and equipment complex ability, thus for such as
What, which improves device efficiency and carries out scientific equipment management, provides decision support, and production capacity damage can not be isolated by solving the prior art
The problem of losing reason, it is more scientific, comprehensive and objective.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the overall flow figure of the injection molding machine administrative decision method based on equipment complex ability and overall equipment efficiency.comprehensive efficiency of equipment；
Fig. 2 is the flow chart of step S1 of the present invention；
Fig. 3 is the flow chart of step S12 of the present invention；
Fig. 4 is the flow chart of step S13 of the present invention；
Fig. 5 is the flow chart of step S14 of the present invention；
Fig. 6 is the flow chart of step S2 of the present invention；
Fig. 7 is one equipment complex merit rating factor structure figure of the embodiment of the present invention；
Fig. 8 is 6 quadrant schematic diagrames that the embodiment of the present invention one is marked off by two-dimentional decision matrix.
Specific embodiment
Referring to Fig.1, the injection molding machine administrative decision method based on equipment complex ability and overall equipment efficiency.comprehensive efficiency of equipment, comprising:
S1, the equipment complex according to equipment dependability index, product quality indicator and device energy conservation index to injection molding machine
Ability is evaluated；
S2, the overall equipment efficiency.comprehensive efficiency of equipment of injection molding machine is evaluated, and constructs the equipment complex energy force-summing device by evaluating
The two-dimentional decision matrix that overall efficiency is constituted；
S3, the capacity loss reason in production is identified according to the two-dimentional decision matrix of building, and according to the result of identification
Carry out injection molding machine administrative decision.
It is further used as preferred embodiment, the equipment dependability index is failure rate, the product quality indicator
For Measure of Process Capability Cpk, the device energy conservation index is consumption rate.
Referring to Fig. 2, it is further used as preferred embodiment, the step S1 comprising:
S11, the evaluation criterion for determining equipment dependability index, product quality indicator and device energy conservation index；
S12, the weight matrix for determining equipment dependability index, product quality indicator and device energy conservation index；
S13, the fuzzy evaluating matrix being made of degree of membership is determined according to evaluation criterion；
S14, weight matrix is multiplied with fuzzy evaluating matrix, obtains grade evaluations matrix, and according to grade evaluations matrix
Determine the equipment complex ability rating of injection molding machine.
Referring to Fig. 3, it is further used as preferred embodiment, the step S12 comprising:
S121, by expert to equipment dependability index, product quality indicator and these three indexs of device energy conservation index into
Row assigns power；
S122, the entitled result of expert is analyzed with analytic hierarchy process (AHP), finally obtains equipment dependability index, produces
The weight matrix W={ 0.45,0.33,0.22 } of quality figureofmerit and device energy conservation index, wherein 0.45 is equipment dependability
The weight of index, 0.33 is the weight of product quality indicator, and 0.22 is the weight of device energy conservation index.
Referring to Fig. 4, it is further used as preferred embodiment, the step S13 comprising:
S131, evaluation points set and opinion rating set, the evaluation points set U and opinion rating set V are established
Expression formula be respectively as follows:
U={ ui| i=1,2,3 }={ u1,u2,u3, V={ vj| j=1,2,3 }={ v1,v2,v3, wherein u1For failure
Rate, u2For Cpk, u3For consumption rate, v1For height, v2For in, v3It is low；
S132, different evaluation factor u is establishediTo different evaluation grade vjMembership function vj(ui)；
S133, the membership function v according to foundationj(ui) the fuzzy evaluating matrix R that obtains being made of degree of membership, it is described fuzzy
The expression formula of evaluations matrix R are as follows:
It is further used as preferred embodiment, the membership function v of the foundationj(ui) it include failure rate u1Respectively to commenting
Valence grade v1、v2And v3Membership function v1(u1)、v2(u1) and v3(u1), represent CpkU2U respectively2Respectively to opinion rating v1、
v2And v3Membership function v1(u2)、v2(u2) and v3(u2), consumption rate u3Respectively to opinion rating v1、v2And v3Membership function v1
(u3)、v2(u3) and v3(u3), the membership function v1(u1)、v2(u1) and v3(u1) expression formula are as follows:
The membership function v1(u2)、v2(u2) and v3(u2) expression formula are as follows:
The membership function v1(u3)、v2(u3) and v3(u3) expression formula are as follows:
Referring to Fig. 5, it is further used as preferred embodiment, the step S14 comprising:
S141, weight matrix W is multiplied with fuzzy matrix R, obtains grade evaluations matrix B, the grade evaluations matrix B's
Expression formula are as follows: B=WR=(b1,b2,b3)；
B in S142, comparison scale evaluations matrix B1、b2And b3The size of these three elements, and according in these three elements
Maximum value determines the equipment complex ability rating of injection molding machine.
It is further used as preferred embodiment, the step S142, specifically:
B in comparison scale evaluations matrix B1、b2And b3The size of these three elements, if the maximum value in these three elements is
b1, then the equipment complex ability rating of injection molding machine is height；If the maximum value in these three elements is b2, then the equipment of injection molding machine is comprehensive
It closes during ability rating is；If the maximum value in these three elements is b3, then the equipment complex ability rating of injection molding machine is low.
Referring to Fig. 6, it is further used as preferred embodiment, the step S2 comprising:
S21, judge whether the overall equipment efficiency.comprehensive efficiency of equipment of injection molding machine is higher than 85%, if so, the overall equipment efficiency.comprehensive efficiency of equipment evaluated
Grade be height, conversely, the grade of the overall equipment efficiency.comprehensive efficiency of equipment then evaluated be it is low；
The two-dimentional decision matrix that S22, building are made of the equipment complex ability and overall equipment efficiency.comprehensive efficiency of equipment evaluated.
It is further used as preferred embodiment, the step S3, specifically:
It is identified in production according to the specific grade of equipment complex ability and overall equipment efficiency.comprehensive efficiency of equipment in two-dimentional decision matrix
Capacity loss reason, and injection molding machine administrative decision is carried out according to the result of identification:
If the grade of equipment complex ability be low and overall equipment efficiency.comprehensive efficiency of equipment grade be it is low, alarm because machine performance difference due to
Cause production efficiency low, and stops production at once and carry out machine performance improvement；
If the grade of equipment complex ability be in and overall equipment efficiency.comprehensive efficiency of equipment grade be it is low, check the low original of production efficiency
Because being that equipment complex performance is general or equipment is abnormal with other factor appearance；
If the grade of equipment complex ability be high and the grade of overall equipment efficiency.comprehensive efficiency of equipment be it is low, alarm machine it is functional but
Because equipment with other factor there are serious problems due to cause production efficiency low；
If the grade of equipment complex ability is that low and overall equipment efficiency.comprehensive efficiency of equipment grade is height, alarm is excessive because machine consumes energy
And cause cost excessively high, it is badly in need of improving the energy saving of machine；
If the grade of equipment complex ability be in and overall equipment efficiency.comprehensive efficiency of equipment grade be it is high, show equipment with other factor without
Problem, need to check whether emphatically causes production efficiency low because of the energy saving sexual abnormality of machine；
If the grade of equipment complex ability is that high and overall equipment efficiency.comprehensive efficiency of equipment grade is height, current state should be maintained to continue
It is produced.
Invention is further described in detail with specific embodiment with reference to the accompanying drawings of the specification.
Embodiment one
Referring to Fig.1-8, the first embodiment of the present invention:
The realization process of injection molding machine administrative decision method of the present embodiment based on equipment complex ability and overall equipment efficiency.comprehensive efficiency of equipment
Are as follows:
(1) firstly, establishing the factor of evaluation structure chart of valuator device integration capability, as shown in fig. 7, from equipment dependability,
Three aspects of product quality and device energy conservation assess equipment complex ability.
Equipment dependability refers to degree of the equipment under the defined conditions with steady operation in the defined time, can use failure
Rate (Failure Rate) this index is measured, and failure rate can be expressed as in the unit time failure of (week, the moon or year) equipment
Number, the failure of the present embodiment only refer to the failure (such as mechanical breakdown, controller failure) of injection molding machine itself, do not include operating not
The of short duration shutdown caused by, external causes such as under feeding.According to priori knowledge, the judge mark of the present embodiment injection molding machine reliability step
It is quasi- as shown in table 1:
1 injection molding machine reliability step evaluation criterion of table
| Failure rate (times/week) | Grade |
| <1/168 | 1 |
| <2/168 | 2 |
| >=2/168 | 3 |
And product quality can use the Measure of Process Capability C of the key index of product under steady production statepkIt measures, Cpk
Calculation formula are as follows:
Wherein, USL is upper specification limit, and LSL is lower specification limit,For specification mean value, s is standard deviation, and min is to minimize
Function.
If product has multiple CpkIndex then selects the smallest CpkIt is evaluated.
C international at presentpkLevel evaluation standard is as shown in table 2 below:
2 injecting products C of tablepkGrade evaluation criterion
| Cpk | Grade |
| >=1.67 | 1 |
| >=1.33 | 2 |
| <1.33 | 3 |
Energy saving refers to that equipment saves the degree of electric energy in normal working conditions, can use consumption rate, i.e. every kilogram of product
Power consumption measure, the present embodiment produce when measuring consumption rate raw material used should be phenylethylene (ABS, PS or
HIPS)." detection of plastic-injection moulding machine energy consumption and the grade put into effect according to China Plastics Machinery Industry Industry Association in August, 2009
The specification of evaluation ", the judgment criteria of injection machine energy-saving is as shown in table 3:
3 injection machine energy-saving grade evaluation criterion of table
| Consumption rate kw*h/kg | Grade |
| ≤ 0.55 | 1 |
| ≤ 0.85 | 2 |
| >0.85 | 3 |
(2) after determining equipment dependability, the grade evaluation criterion of three indexs of product quality and device energy conservation, by 50
The expert in injection industry field carries out tax power to these three indexs, then uses analytic hierarchy process (AHP) (Analytic Hierarchy
Process) to expert assign power result analyze, finally determined equipment dependability, product quality and device energy conservation this three
The weight of a index is respectively 0.45,0.33,0.22.
(3) evaluation points set and class set, evaluation points set U={ u are established1,u2,u3,；Opinion rating set
For V={ vj| j=1,2,3 }={ v1,v2,v3}。
(4) v is definedj(ui) it is factor uiIn Grade vjDegree of membership, establish that different evaluation factor pair is different grades of to be subordinate to
Function.
Membership function v of the failure rate to opinion rating1(u1)、v2(u1) and v3(u1) expression formula are as follows:
Injecting products CpkTo the membership function v of opinion rating1(u2)、v2(u2) and v3(u2) expression formula are as follows:
Membership function v of the consumption rate to opinion rating1(u3)、v2(u3) and v3(u3) expression formula are as follows:
(5) fuzzy evaluating matrix is established, remembers vj(ui) it is rij, then the fuzzy evaluating matrix R that is made of degree of membership are as follows:
(6) weight matrix W={ 0.45,0.33,0.22 } is multiplied with fuzzy matrix R, obtains grade evaluations matrix B=
WR=(b1,b2,b3), then compare b1、b2And b3Size, wherein the maximum value of three corresponds to corresponding equipment complex energy
Power grade.For example, if b1Maximum, then equipment complex ability is v1(as high)；If b2Maximum, then equipment complex ability is v2(i.e.
For in)；If b3Maximum, then equipment complex ability is v3(as low).
(7) judge of overall equipment efficiency.comprehensive efficiency of equipment is boundary with generally acknowledge in the world 85%, and the overall equipment efficiency.comprehensive efficiency of equipment higher than 85% is
Height, be lower than 85% overall equipment efficiency.comprehensive efficiency of equipment it is low, the equipment complex ability evaluated and overall equipment efficiency.comprehensive efficiency of equipment are then constituted two
Decision matrix is tieed up, as shown in figure 8, marking off 6 quadrants altogether, corresponds to 6 kinds of administrative decision guidances:
Quadrant 1:OEC (i.e. equipment complex ability) is low, and OEE (i.e. overall equipment efficiency.comprehensive efficiency of equipment) is low, and sound an alarm: machine performance is poor
Cause production efficiency low, should stop producing at this time at once, sets about improving machine even more new engine.
In quadrant 2:OEC, OEE is low, and overall equipment efficiency.comprehensive efficiency of equipment is low, and reason has two: first is that equipment complex ability is general；Second is that setting
Standby exception occur with other factor (including people, material and method etc.), if setup time is too long, mold exchange speed is excessively slow, artificial to lose
The supply of accidentally excessive or material is not in time etc..Improving production efficiency at this time should start in terms of above-mentioned two.
Quadrant 3:OEC high, OEE is low, sounds an alarm: machine performance is fine, but equipment with other factor (including people, material and
Method etc.) there are serious problems, and cause production efficiency low.Should check whether adjusting machine time is too long at this time, whether mold changing speed is excessively slow,
Whether human error excessive, quality of material whether qualification etc..
Quadrant 4:OEC is low, and OEE high is sounded an alarm: machine energy consumption is excessive and causes cost excessively high, is badly in need of raising machine at this time
The energy saving of device.
In quadrant 5:OEC, OEE high illustrates no problems such as people, machine, material, should focus on the energy saving of inspection machine at this time.
Quadrant 6: equipment complex ability and overall equipment efficiency.comprehensive efficiency of equipment reach perfect condition, this state should be maintained to produce, simultaneously
The utilization rate of equipment and installations of this machine can be improved.
Embodiment two
The present embodiment by factory mold clamping force 250KN, power 30kw injection molding machine for, in practice to the present invention
Applicable cases are illustrated.
It is zero degree that the injection molding machine, which is recorded, in one week internal fault number, the minimum C of product quality indicator under steady production statepk
Be 1.2, the total weight of the phenylethylene product of 50 batch of continuous production is 1kg, unit batch time be 1.2s (needed when calculating by
Second is converted into hour).
The detailed process of the present embodiment are as follows:
(1) grade of three indexs, u are evaluated first1=0, letter is subordinate to opinion rating by failure rate in embodiment one
Number v1(u1)、v2(u1) and v3(u1) expression formula be apparent from the grade of reliability as height；u2=1.2, it is produced by being molded in embodiment one
Product CpkTo the membership function v of opinion rating1(u2)、v2(u2) and v3(u2) expression formula obtain v1(u2)=0, v2(u2)=0.2/
0.33, v3(u2)=1, v3(u2) maximum, therefore according to degree of membership maximum principle, u2Grade be v3, i.e. the grade of stability is
It is low；u3=(50* unit batch time * injection molding machine rated power)/weight=[50* (1.2/3600) h*30kw]/1kg=
0.5kw*h/kg, by consumption rate in embodiment one to the membership function v of opinion rating1(u3)、v2(u3) and v3(u3) expression formula
The grade of energy saving is apparent from as height.
(2) fuzzy evaluating matrix R is calculated, all v can be calculated by the membership function expression formula of embodiment one respectivelyj(ui),
That is rijValue, obtain matrix R are as follows:
(3) overall merit is carried out according to maximum membership grade principle, then B=wR=(b1,b2,b3)=(0.67,0.2,
0.33), therefore b1 is maximum, i.e., this equipment complex ability is height.It is computed, this injection molding machine this week overall equipment efficiency.comprehensive efficiency of equipment is
70%, overall equipment efficiency.comprehensive efficiency of equipment is low.Therefore, this injection molding machine known to the decision matrix in the present invention has fallen in third quadrant,
The decision guidance given at this time are as follows: " machine performance is fine, but equipment is with other factor (people, material, method) that there are serious problems, leads
Cause production efficiency low, should check: whether adjusting machine time is too long, and whether mold changing speed is excessively slow, and whether human error is excessive, material matter
Amount whether qualification etc. ".After checking according to above-mentioned decision guidance, the case where being implicitly present in operator's over miss is found, it should be immediately
Training and related rewards and punishments measure are implemented to the employee.
The present invention proposes equipment complex ability (Overall Equipment for the equipment management problem of injection industry
Capacity, i.e. OEC) management method, the objective circumstances of equipment complex ability can be scientifically evaluated, so that equipment is comprehensive
The reason of closing capacity loss in efficiency rating resolves into machine reason and non-machine reason, further provides for manager for single
The decision support of platform injection molding machine management.
In addition, being evaluated compared to traditionally narrow capacity of equipment index only for product quality indicator, the present invention
In for separate unit injection molding machine and the equipment complex ability that proposes not only allows for this factor of evaluation of injecting products quality, it is more comprehensive
Incorporated machine reliability and energy saving the two important factors, thus to the capacity of equipment of separate unit injection molding machine carry out science,
Comprehensively, objective appraisal.In actual production, the reliability of machine is even more crucial than product quality, because only that well
Reliability just can guarantee safe continuous production, while the energy saving of machine is also of crucial importance, and injection molding machine is the life of highly energy-consuming
Equipment is produced, is vigorously advocated under the overall situation that energy-saving and emission-reduction and market more require to reduce cost at home, energy saving is that evaluation is infused
One indispensable key factor of molding machine ability.
In conclusion from product quality, being set it is an object of the present invention to provide decision support for the management of separate unit injection-moulding device
Three objective equipment complex abilities for comprehensively evaluating injection molding machine of aspect of standby reliability and energy saving, and pass through equipment complex
The comprehensive analysis of efficiency and equipment complex ability identifies the capacity loss reason in production, thus how to improve equipment effect
Rate and the equipment management for carrying out science provide decision support.
It is to be illustrated to preferable implementation of the invention, but the invention is not limited to the implementation above
Example, those skilled in the art can also make various equivalent variations on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.
Claims (1)
1. the injection molding machine administrative decision method based on equipment complex ability and overall equipment efficiency.comprehensive efficiency of equipment, it is characterised in that: include:
S1, according to equipment dependability index, product quality indicator and device energy conservation index to the equipment complex ability of injection molding machine
It is evaluated；
S2, the overall equipment efficiency.comprehensive efficiency of equipment of injection molding machine is evaluated, and constructed by the equipment complex ability evaluated and equipment complex
The two-dimentional decision matrix that efficiency is constituted；
S3, the capacity loss reason in production is identified according to the two-dimentional decision matrix of building, and carried out according to the result of identification
Injection molding machine administrative decision；
The equipment dependability index is failure rate, and the product quality indicator is Measure of Process Capability Cpk, the device energy conservation
Property index be consumption rate；
The step S1 comprising:
S11, the evaluation criterion for determining equipment dependability index, product quality indicator and device energy conservation index；
S12, the weight matrix for determining equipment dependability index, product quality indicator and device energy conservation index；
S13, the fuzzy evaluating matrix being made of degree of membership is determined according to evaluation criterion；
S14, weight matrix is multiplied with fuzzy evaluating matrix, obtains grade evaluations matrix, and determine according to grade evaluations matrix
The equipment complex ability rating of injection molding machine；
The step S12 comprising:
S121, equipment dependability index, product quality indicator and device energy conservation index these three indexs are assigned by expert
Power；
S122, the entitled result of expert is analyzed with analytic hierarchy process (AHP), finally obtains equipment dependability index, product matter
The weight matrix W={ 0.45,0.33,0.22 } of figureofmerit and device energy conservation index, wherein 0.45 is equipment dependability index
Weight, 0.33 be product quality indicator weight, 0.22 be device energy conservation index weight；
The step S13 comprising:
S131, evaluation points set and opinion rating set, the table of the evaluation points set U and opinion rating set V are established
It is respectively as follows: up to formula
U={ ui| i=1,2,3 }={ u1,u2,u3, V={ vj| j=1,2,3 }={ v1,v2,v3, wherein u1For failure rate, u2
For Cpk, u3For consumption rate, v1For height, v2For in, v3It is low；
S132, different evaluation factor u is establishediTo different evaluation grade vjMembership function vj(ui)；
S133, the membership function v according to foundationj(ui) obtain the fuzzy evaluating matrix R being made of degree of membership, the fuzzy evaluation
The expression formula of matrix R are as follows:
The membership function v of the foundationj(ui) it include failure rate u1Respectively to opinion rating v1、v2And v3Membership function v1(u1)、
v2(u1) and v3(u1), represent CpkU2Respectively to opinion rating v1、v2And v3Membership function v1(u2)、v2(u2) and v3(u2),
Consumption rate u3Respectively to opinion rating v1、v2And v3Membership function v1(u3)、v2(u3) and v3(u3), the membership function v1
(u1)、v2(u1) and v3(u1) expression formula are as follows:
The membership function v1(u2)、v2(u2) and v3(u2) expression formula are as follows:
The membership function v1(u3)、v2(u3) and v3(u3) expression formula are as follows:
The step S14 comprising:
S141, weight matrix W is multiplied with fuzzy matrix R, obtains grade evaluations matrix B, the expression of the grade evaluations matrix B
Formula are as follows: B=WR=(b1,b2,b3)；
B in S142, comparison scale evaluations matrix B1、b2And b3The size of these three elements, and according to the maximum in these three elements
It is worth the equipment complex ability rating for determining injection molding machine；
The step S142, specifically:
B in comparison scale evaluations matrix B1、b2And b3The size of these three elements, if the maximum value in these three elements is b1, then
The equipment complex ability rating of injection molding machine is height；If the maximum value in these three elements is b2, then the equipment complex energy of injection molding machine
During power grade is；If the maximum value in these three elements is b3, then the equipment complex ability rating of injection molding machine is low；
The step S2 comprising:
S21, judge whether the overall equipment efficiency.comprehensive efficiency of equipment of injection molding machine is higher than 85%, if so, the overall equipment efficiency.comprehensive efficiency of equipment evaluated etc.
Grade is height, conversely, the grade of the overall equipment efficiency.comprehensive efficiency of equipment then evaluated is low；
The two-dimentional decision matrix that S22, building are made of the equipment complex ability and overall equipment efficiency.comprehensive efficiency of equipment evaluated；
The step S3, specifically:
The production capacity in production is identified according to the specific grade of equipment complex ability and overall equipment efficiency.comprehensive efficiency of equipment in two-dimentional decision matrix
Loss cause, and injection molding machine administrative decision is carried out according to the result of identification:
If the grade of equipment complex ability be low and overall equipment efficiency.comprehensive efficiency of equipment grade be it is low, alarm because machine performance difference due to cause
Production efficiency is low, and stops production at once and carry out machine performance improvement；
If the grade of equipment complex ability be in and overall equipment efficiency.comprehensive efficiency of equipment grade be it is low, check that the low reason of production efficiency is
Equipment complex performance is general or equipment is abnormal with other factor appearance；
If the grade of equipment complex ability be high and the grade of overall equipment efficiency.comprehensive efficiency of equipment be it is low, alarm machine is functional but because setting
It is standby to cause production efficiency low there are serious problems with other factor；
If the grade of equipment complex ability is that low and overall equipment efficiency.comprehensive efficiency of equipment grade is height, alarm is led because machine energy consumption is excessive
It causes cost excessively high, is badly in need of improving the energy saving of machine；
If the grade of equipment complex ability be in and overall equipment efficiency.comprehensive efficiency of equipment grade be it is high, show equipment with other factor without asking
Topic, need to check whether emphatically causes production efficiency low because of the energy saving sexual abnormality of machine；
If the grade of equipment complex ability is that high and overall equipment efficiency.comprehensive efficiency of equipment grade is height, current state should be maintained to continue
Production.
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