CN107422103A - A kind of jet-propelled front lay of product examine machine - Google Patents
A kind of jet-propelled front lay of product examine machine Download PDFInfo
- Publication number
- CN107422103A CN107422103A CN201710813468.6A CN201710813468A CN107422103A CN 107422103 A CN107422103 A CN 107422103A CN 201710813468 A CN201710813468 A CN 201710813468A CN 107422103 A CN107422103 A CN 107422103A
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- mrow
- air
- venthole
- front lay
- msup
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- 239000007789 gas Substances 0.000 claims abstract description 34
- 238000007639 printing Methods 0.000 claims description 19
- 238000013461 design Methods 0.000 claims description 11
- 238000005457 optimization Methods 0.000 claims description 7
- 230000003068 static effect Effects 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 239000000565 sealant Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000002955 isolation Methods 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 abstract description 2
- 238000009423 ventilation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000009156 water cure Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/34—Paper
- G01N33/346—Paper sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/0036—Devices for scanning or checking the printed matter for quality control
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Geometry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Theoretical Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Mathematical Analysis (AREA)
- Biochemistry (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Computational Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- General Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Quality & Reliability (AREA)
Abstract
The invention discloses a kind of jet-propelled front lay of product examine machine, including preceding gauge, the air inlet for importing gases at high pressure is offered at the back side of the preceding gauge, the air inlet is connected with being arranged on the intrinsic air cavity of front lay, and some ventholes for gases at high pressure outflow are offered on the preceding gauge.The present invention can form high speed and high pressure air-flow by increasing some stomatas in front lay bottom after ventilation.Realized by micropore air pressure isolation technology and do not shut down high speed paper feeding, both ensure that paper steadily to front transfer, eliminates paper surface scuffing again.
Description
Technical field
The present invention relates to product examine machine field, specifically, is related specifically to a kind of jet-propelled front lay of product examine machine.
Background technology
Front lay is primarily used to printing product in individual product examine machine at a high speed and plays prelocalization during paging.In order to suitable
Different paper sheet thickness requirements is answered, the position up and down of front lay can carry out accurate adjustment by line slide rail.
Referring to Fig. 1, front lay coordinates stage clip it is carried out along line slide rail by the regulating bolt at the top of it
The regulation of lower position, the right position of front lay is adjusted by the sliding block on aluminium section bar, front and back position is then by connecting rod
Chute, it is moved into appropriate position and coordinates holding screw to be fixed.The position adjustments of all directions all can be according to scale
Accurate adjustment is carried out, front lay structure is to determine the principal element whether printing scratches.
Referring to Fig. 2, integral type front lay bottom is the plane that wide cut is 4mm, and this front lay is at present using commonplace.But
This structure can increase the contact area of printing and front lay, and increase printing scratches probability.
Referring to Fig. 3, separate type front lay separates front lay bottom with main body, so can be by rotating bottom regulation and paging
Distance and angle between belt, printing can be slowed down to a certain extent and scratch phenomenon.
Front lay bottom causes front lay bottom that abrasion occurs, it is necessary to front lay bottom due to prolonged contact occurs with printing
Portion carries out secondary operation or replacing.Separate type front lay has the advantages that replacement cost is low, easy to adjust than integral type front lay.But
It is that the two can all be in contact with printing at work, this does not eliminate thoroughly and produces the basic factor that printing scratches phenomenon.
The content of the invention
It is an object of the invention to for deficiency of the prior art, there is provided a kind of jet-propelled front lay of product examine machine, with solution
Certainly problems of the prior art.
Technical problem solved by the invention can be realized using following technical scheme：
A kind of jet-propelled front lay of product examine machine, including preceding gauge, offered at the back side of the preceding gauge for leading
Enter the air inlet of gases at high pressure, the air inlet connects with being arranged on the intrinsic air cavity of front lay, is opened on the preceding gauge
Provided with some ventholes for gases at high pressure outflow.
Further, the number of the venthole is 9, a diameter of 1.4mm of venthole.
Fluid sealant is provided between the air inlet and air cavity.
A kind of venthole of the jet-propelled front lay of product examine machine opens up method, comprises the following steps：
If the impulse force that printing product surface is subject to is J, not considering that flowing gas stickiness influences, i.e., gas does constant entropy and can flowed absolutely,
Along the stagnation pressure p of conduit axis different cross section*Constant, equivalence is in the static pressure p of the section gas, according to the aerodynamics equation of momentum
Understand：
J=Wc+pA
Wherein, W is outlet flow, and c is air velocity, and p is outlet static pressure, and A is exit area；By flowing
Formula is measured to understand：
In formula,For given gas, KmFor constant, the air-flow in pipeline is air, then Km
=0.0404；Q (λ) is relatively close stream,
Impulse force formula arrange：
Atmospheric density γ=1.4, λ are velocity coeffficient,C is air velocity, acrCritical sound velocity；
2)R=287.06J/Kg*K, T*For the stagnation temperature of outlet air-flow；
The temperature of gas in pipelines is about 20 DEG C, and atmospheric pressure is 1.01 × 105Pa；The flowing of air in the duct by etc.
Entropy can be handled absolutely, be arranged
J=2.81pAirnd2
Wherein, n is the number of venthole, and d is the diameter of venthole；
Gas cell distribution is in 1.5mm × 21mm plane；Punching uses standard type straight shank drill, the sword footpath model of straight shank drill
Be trapped among 0.2mm to 13mm, the spacing between stomata is not less than 1mm, therefore optimization design constraints and boundary condition be:
Constraints：
Boundary condition：0.2≤x2＜ 1.5；x1＞ 1
Design is now optimized to the number n and diameter d of venthole using Matlab
Design variable：X=[n, d]=[x1,x2]；
Object function：
Constraints：
Boundary condition：0.2≤x2＜ 1.5, x1＞ 1；
Above-mentioned model can be handled by Multivariable Constrained local optimization problem, it be carried out using fmincon function instructions excellent
Change is designed to as drawn a conclusion：
X=[8.8,1.5], J=fval=5.6232
The diameter of venthole is chosen for 1.4mm, and the number of venthole is 9, and the impulse force that printing product surface receives is 5.01N.
Compared with prior art, beneficial effects of the present invention are as follows：
It is simple in construction, it is ingenious in design, by increasing some stomatas in front lay bottom, high speed and high pressure gas can be formed after ventilation
Stream.Realized by micropore air pressure isolation technology and do not shut down high speed paper feeding, both ensure that paper steadily to front transfer, eliminates paper again
Open surface tear.
Brief description of the drawings
Fig. 1 is the schematic diagram of front lay adjustment structure of the present invention.
Fig. 2 is the schematic diagram of integral type front lay of the present invention.
Fig. 3 is the schematic diagram of separate type front lay of the present invention.
Fig. 4 is the schematic diagram of the jet-propelled front lay of product examine machine of the present invention.
Embodiment
To be easy to understand the technical means, the inventive features, the objects and the advantages of the present invention, with reference to
Embodiment, the present invention is expanded on further.
Referring to Fig. 4, the present invention by being improved on the architecture basics of integral type front lay, gases at high pressure by front lay the back of the body
Surface current enters, and is sprayed by the micropore of front lay bottom.Sealed by fluid sealant between air inlet end cap and cavity, sent out to prevent gas
Raw leakage, influence the stability of air-flow.
High speed and high pressure air-flow is sprayed onto printing product surface from micropore, avoids printing from being in contact with it, therefore the diameter and number of stomata
Pressure suffered during paging has direct relation with printing.Connected between air inlet and air compressor by tracheae, gas
The relevant parameter of pump is as shown in the table.
Optimization design variable is determined first：The diameter d and number n of micropore, i.e. x=[n, d]=[x1,x2].Then need to build
Vertical object function, under geometrical condition and boundary condition constraint, the directed force F for the air-flow printing product that stomata sprays is the bigger the better,
Therefore object function is the effect of air-flow printing product, i.e., the impulse force J that printing product surface is subject to.Gas is in the duct with perpendicular to passage
Cross section flowed along same direction, it is assumed that ignore the change of the parameters such as pressure, temperature at work at different moments, the gas
It can be handled according to one-dimensional steady flowing.Air filtration pressure maintaining valve is connected on tracheae, the static pressure of pipeline gas can be obtained.Do not consider
Flowing gas stickiness influences, i.e., gas does constant entropy and can flowed absolutely, along the stagnation pressure p of conduit axis different cross section*Constant, equivalence is in this
The static pressure p of section gas.It can be seen from the aerodynamics equation of momentum：
J=Wc+pA (1.1)
Wherein, W is outlet flow, and c is air velocity, and p is outlet static pressure, and A is exit area.By flowing
Formula is measured to understand：
In formula,For given gas KmIt is a constant.Air-flow in pipeline is air, then Km
=0.0404.Q (λ) is relatively close stream,Impulse force formula arrange：
Atmospheric density γ=1.4, λ are velocity coeffficient,C is air velocity, acrCritical sound velocity.
R=287.06J/ (Kg*K), T*For the stagnation temperature of outlet air-flow, room temperature is approximately equal to.The rated discharge pressure of air compressor machine is
0.8MPa, about 8 atmospheric pressure.Two parts of paging and inspection rejects need high speed and high pressure air-flow in individual product examine equipment at a high speed, because
This air compressor machine produce high pressure draught be generally divided into two parts, for paging high pressure draught can by air filtration pressure maintaining valve come
Pressure regulation is carried out, reaches as high as 0.4MPa, considers that factor, the air pressure such as safety and stability are arranged on 0.3MPa in real work
Left and right.The temperature of gas in pipelines is about 20 DEG C, i.e. 293K.Atmospheric pressure is 1.01 × 105Pa, about 0.1MPa.Air exists
Flowing in pipeline can be handled absolutely by constant entropy, be arranged
J=2.81pAirnd2 (1.4)
Gas cell distribution is in front lay bottom 1.5mm × 21mm plane.Punching uses standard type straight shank drill, straight shank drill
Sword footpath scope in 0.2mm to 13mm.Because stomata is distributed on front lay bottom, and according to technological requirement and actual processing, gas
Spacing between hole is not less than 1mm.Therefore optimization design constraints and boundary condition be:
Constraints：
Boundary condition：0.2≤x2＜ 1.5；x1＞ 1
In order to prevent gas from leaking, be bonded, the glue is carried out using JL-498 metals glue special between the body of rod and closure
The water cure time is short, has good tensile strength and shear strength, and it is existing without gas leakage occurs can to bear 20 atmospheric pressure
As.Design is now optimized to the number n and diameter d of stomata using Matlab
Design variable：X=[n, d]=[x1,x2]；
Object function：
Constraints：
Boundary condition：0.2≤x2＜ 1.5, x1＞ 1；
Above-mentioned model can be handled by Multivariable Constrained local optimization problem, it be carried out using fmincon function instructions excellent
Change is designed to as drawn a conclusion：
X=[8.8,1.5], J=fval=5.6232
In view of the specification of drill bit, rounding processing is carried out to result, the diameter of stomata is chosen for 1.4mm, the number of stomata
For 9, the impulse force that printing product surface receives is 5.01N.From sword footpath D=1.4mm standard type left-hand straight shank twist drill head.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (4)
1. a kind of jet-propelled front lay of product examine machine, including preceding gauge (1), it is characterised in that at the back side of the preceding gauge
Offer the air inlet (2) for importing gases at high pressure, the air inlet (2) and the air cavity (3) being arranged in preceding gauge (1)
Connection, some ventholes (4) for gases at high pressure outflow are offered on the preceding gauge (1).
2. the jet-propelled front lay according to claim 1 for product examine machine, it is characterised in that of the venthole (3)
Number is 9, a diameter of 1.4mm of venthole.
3. the jet-propelled front lay according to claim 1 for product examine machine, it is characterised in that in the air inlet (2) and
Fluid sealant is provided between air cavity (3).
4. a kind of venthole of the jet-propelled front lay of product examine machine opens up method, it is characterised in that comprises the following steps：
If the impulse force that printing product surface is subject to is J, do not consider that flowing gas stickiness influences, i.e., gas does constant entropy and can flowed absolutely, along pipe
The stagnation pressure p of road axis different cross section*Constant, equivalence, can according to the aerodynamics equation of momentum in the static pressure p of the section gas
Know：
J=Wc+pA
Wherein, W is outlet flow, and c is air velocity, and p is outlet static pressure, and A is exit area；It is public by flow
Formula is understood：
<mrow>
<mi>W</mi>
<mo>=</mo>
<msub>
<mi>K</mi>
<mi>m</mi>
</msub>
<mfrac>
<msup>
<mi>p</mi>
<mo>*</mo>
</msup>
<msqrt>
<msup>
<mi>T</mi>
<mo>*</mo>
</msup>
</msqrt>
</mfrac>
<mi>q</mi>
<mrow>
<mo>(</mo>
<mi>&lambda;</mi>
<mo>)</mo>
</mrow>
<mi>A</mi>
</mrow>
In formula,For given gas, KmFor constant, the air-flow in pipeline is air, then Km=
0.0404；Q (λ) is relatively close stream,
Impulse force formula arrange：
<mrow>
<mi>J</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mi>A</mi>
<mi>p</mi>
<mrow>
<mo>(</mo>
<msup>
<mi>&lambda;</mi>
<mn>2</mn>
</msup>
<mo>+</mo>
<mn>1</mn>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<mfrac>
<mrow>
<mi>&gamma;</mi>
<mo>-</mo>
<mn>1</mn>
</mrow>
<mrow>
<mi>&gamma;</mi>
<mo>+</mo>
<mn>1</mn>
</mrow>
</mfrac>
<msup>
<mi>&lambda;</mi>
<mn>2</mn>
</msup>
<mo>)</mo>
</mrow>
</mfrac>
</mrow>
Atmospheric density γ=1.4, λ are velocity coeffficient,C is air velocity, acrCritical sound velocity；
2)R=287.06J/Kg*K, T*For the stagnation temperature of outlet air-flow；
The temperature of gas in pipelines is about 20 DEG C, and atmospheric pressure is 1.01 × 105Pa；The flowing of air in the duct is exhausted by constant entropy
It can handle, arrange
J=2.81pAirnd2
Wherein, n is the number of venthole, and d is the diameter of venthole；
Gas cell distribution is in 1.5mm × 21mm plane；Punching uses standard type straight shank drill, and the sword footpath scope of straight shank drill exists
0.2mm to 13mm, the spacing between stomata are not less than 1mm, thus optimization design constraints and boundary condition be:
Constraints：
Boundary condition：0.2≤x2＜ 1.5；x1＞ 1
Design is now optimized to the number n and diameter d of venthole using Matlab
Design variable：X=[n, d]=[x1,x2]；
Object function：
Constraints：
Boundary condition：0.2≤x2＜ 1.5, x1＞ 1；
Above-mentioned model can be handled by Multivariable Constrained local optimization problem, and it is optimized using fmincon function instructions and set
Count as drawn a conclusion：
X=[8.8,1.5], J=fval=5.6232
The diameter of venthole is chosen for 1.4mm, and the number of venthole is 9, and the impulse force that printing product surface receives is 5.01N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710813468.6A CN107422103A (en) | 2017-09-11 | 2017-09-11 | A kind of jet-propelled front lay of product examine machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710813468.6A CN107422103A (en) | 2017-09-11 | 2017-09-11 | A kind of jet-propelled front lay of product examine machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107422103A true CN107422103A (en) | 2017-12-01 |
Family
ID=60432422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710813468.6A Pending CN107422103A (en) | 2017-09-11 | 2017-09-11 | A kind of jet-propelled front lay of product examine machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107422103A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201120766Y (en) * | 2007-12-04 | 2008-09-24 | 北人印刷机械股份有限公司 | Front gauge bench with air blowing function |
| CN201211725Y (en) * | 2008-07-11 | 2009-03-25 | 陕西立人印刷设备有限公司 | Colorful offset press |
| CN104828594A (en) * | 2015-03-17 | 2015-08-12 | 北京印刷学院 | Printing quality inspector |
| CN207281070U (en) * | 2017-09-11 | 2018-04-27 | 上海工程技术大学 | A kind of jet-propelled front lay of product examine machine |
-
2017
- 2017-09-11 CN CN201710813468.6A patent/CN107422103A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201120766Y (en) * | 2007-12-04 | 2008-09-24 | 北人印刷机械股份有限公司 | Front gauge bench with air blowing function |
| CN201211725Y (en) * | 2008-07-11 | 2009-03-25 | 陕西立人印刷设备有限公司 | Colorful offset press |
| CN104828594A (en) * | 2015-03-17 | 2015-08-12 | 北京印刷学院 | Printing quality inspector |
| CN207281070U (en) * | 2017-09-11 | 2018-04-27 | 上海工程技术大学 | A kind of jet-propelled front lay of product examine machine |
Non-Patent Citations (1)
| Title |
|---|
| 郭强;蔡吉飞;朱宁宽;: "品检机走纸不稳振动分析与优化", 北京印刷学院学报 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171201 |
|
| RJ01 | Rejection of invention patent application after publication |