CN117123433B - Control logic analysis method for variable-speed glue quantity of dispensing valve - Google Patents
Control logic analysis method for variable-speed glue quantity of dispensing valve Download PDFInfo
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- CN117123433B CN117123433B CN202311393984.XA CN202311393984A CN117123433B CN 117123433 B CN117123433 B CN 117123433B CN 202311393984 A CN202311393984 A CN 202311393984A CN 117123433 B CN117123433 B CN 117123433B
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- speed
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- 239000003292 glue Substances 0.000 title claims abstract description 171
- 238000004458 analytical method Methods 0.000 title claims abstract description 13
- 239000000853 adhesive Substances 0.000 claims description 21
- 230000001070 adhesive effect Effects 0.000 claims description 21
- 238000005303 weighing Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 13
- 230000001960 triggered effect Effects 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 9
- 230000001133 acceleration Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000005491 wire drawing Methods 0.000 claims description 3
- 230000001788 irregular Effects 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0225—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work characterised by flow controlling means, e.g. valves, located proximate the outlet
Abstract
The invention discloses a control logic analysis method for the variable-speed glue quantity of a glue dispensing valve, which comprises the following steps: step 1, calculating the unit glue amount of a glue dispensing valve; step 2, calculating the dispensing track speed of the dispensing valve; step 3, calculating the advance and delay distance control glue outlet, which comprises the following specific steps: step 31, controlling the speed of the dispensing track, and calculating the set track advance distance; step 32, triggering and sending out glue signals in advance; step 33, triggering a glue closing signal in advance; and 34, calculating a set track delay distance. According to the control logic analysis method of the dispensing valve variable-speed glue quantity, the track dispensing glue quantity is controlled on the premise of ensuring the track through variable-speed control.
Description
Technical Field
The invention relates to the technical field of dispensing equipment control methods, in particular to a control logic analysis method for variable-speed glue quantity of a dispensing valve.
Background
The dispensing device is a device for coating glue or other fluid medium on a target position to achieve the purposes of packaging, bonding, fixing or heat conduction. The dispensing equipment comprises a translation mechanism and a dispensing valve, the translation mechanism drives the dispensing valve to perform multi-axis movement, the dispensing valve arranged on the translation mechanism is precisely positioned to a position where dispensing is required, the dispensing valve moves along a preset dispensing path, and in the moving process, the dispensing valve is controlled by a dispensing valve controller to quantitatively extrude glue so as to realize glue coating. The dispensing valve comprises a piezoelectric valve, a screw valve and the like. Wherein the control of the track and the glue amount is an important factor influencing the glue dispensing effect.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art.
Therefore, the invention provides a control logic analysis method for the speed-changing glue quantity of the glue dispensing valve, which controls the track glue dispensing quantity on the premise of ensuring the track through speed-changing control.
The control logic analysis method for the variable-speed glue quantity of the glue dispensing valve provided by the embodiment of the invention comprises the following steps of:
step 1, calculating the unit glue amount of a glue dispensing valveMg/ms or->Mg/spot: calculating the unit glue weight through gluing and weighing;
step 2, calculating the dispensing track speed of the dispensing valveMillimeter/second;
step 3, calculating the advance and delay distance control glue outlet, which comprises the following specific steps:
step 31, controlling the speed of the dispensing track, and calculating the set track advance distance: before the dispensing platform controls the dispensing valve to move to the starting point of the dispensing track, the dispensing track speed of the dispensing valve calculated in the step 2 needs to be reachedMillimeter/second, according to actual conditions through the motion acceleration of point gum platform +.>Mm/square second to calculate the advance distance +.>When in practical operation, the dispensing platform controls the dispensing valve to move to at least +.>At the millimeter position, the dispensing valve starts to run along the dispensing track;
step 32, triggering and sending out glue signals in advance: when the dispensing platform controls the dispensing valve to move to the starting point position of the dispensing track, the dispensing valve is triggered to dispense the glue: because the time delay is generated from the start of the dispensing label to the actual start of the dispensing label from the trigger dispensing valve to the dispensing valveMillisecond, so that the glue outlet signal sent by the glue dispensing platform is advanced according to the actual situation>Triggering in milliseconds;
step 33, triggering a glue closing signal in advance: when the dispensing platform controls the dispensing valve to move to the position of the ending point of the dispensing track, the dispensing valve is triggered to close the glue: when the glue closing signal is triggered to the glue dispensing valve, the glue outlet is actually stopped with time delayIn millisecond, the adhesive closing signal sent by the adhesive dispensing platform needs to be advanced +>Triggering in milliseconds;
step 34, calculating a set track delay distance: the dispensing platform controls the dispensing valve to trigger the deceleration stop after passing through the end point of the dispensing track, in order to reduce the influence of the deceleration process on the dispensing, the delay distance is increased, and the deceleration stop is started when the delay position is reached.
The method has the advantages that the accuracy of glue quantity is ensured on the basis of ensuring a glue dispensing path and forming a uniform glue strip after glue is dispensed on the surface of a workpiece, a glue dispensing platform calculates unit glue weight through glue dispensing weighing, calculates the glue dispensing time through preset glue weight and unit glue weight, calculates the speed required by the running of the glue dispensing path through track length and the glue dispensing time, ensures the glue dispensing path along the set path at a uniform speed and forms the uniform glue strip after glue is dispensed on the surface of the workpiece, ensures the glue dispensing accuracy of the initial point of the track through touching a glue dispensing signal in advance and calculating the set track advance distance, and ensures the accuracy of the end point of the track through triggering the glue closing signal in advance and calculating the set track delay distance.
According to one embodiment of the invention, the dispensing valve is a piezoelectric valve or a screw valve.
According to one embodiment of the invention, when the dispensing valve is a piezoelectric valve, the dispensing platform calculates the unit adhesive weight by counting the number of points based on the piezoelectric valve.
According to one embodiment of the invention, when the dispensing valve is a screw valve, the dispensing platform calculates the unit glue weight by time weighing based on the screw valve.
According to one embodiment of the present invention, when the dispensing valve is a piezoelectric valve, in the step 1, the injection of the piezoelectric valve is controlledThe glue is added into a weighing device and weighed to obtain the glue weight +.>Mg, the unit adhesive weight of the piezoelectric valve is calculated to be +.>Mg/spot.
According to an embodiment of the present invention, when the dispensing valve is a piezoelectric valve, in the step 2, a length of the dispensing track is calculated according to a preset dispensing trackMillimeter, preset dispensing trace glue amount +.>Milligrams; calculating pressure according to current parameters of piezoelectric valve controllerThe time for the electrovalve to come out of one point +.>Second, the glue quantity of the dispensing track is +.>Milligram and unit weight of adhesive for piezoelectric valveMg/point, the total point number of the piezoelectric valve required to strike the dispensing track is calculated to be +.>Point, calculate the dispensing trace speed of the piezoelectric valve from this>Millimeter/second.
According to one embodiment of the present invention, when the dispensing valve is a screw valve, in the step 1, the screw valve is controlled to dispense the glueMillisecond into a weighing device, weigh to get glue weight +.>Mg, calculate the unit adhesive weight of screw valve asMg/ms.
According to an embodiment of the present invention, when the dispensing valve is a screw valve, in the step 2, the length of the dispensing track is calculated according to a preset dispensing trackMillimeter, preset dispensing trace glue amount +.>Milligrams; the glue quantity of the dispensing track is->Mg and screw valve unitWeight of gum>Mg/ms, the total gel out time of the screw valve is calculated to be +.>Millisecond thus calculate the dispensing trace speed of screw valve +.>Millimeter/second.
According to an embodiment of the present invention, in the step 31, when the dispensing trace is a straight line, the starting point is separatedThe millimeter position is in the reverse extension line direction of the dispensing track.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a control logic analysis method of the variable speed glue amount of the dispensing valve of the present invention;
fig. 2 is a flowchart for calculating advance and retard distance control dispensing.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The following specifically describes a control logic analysis method for the variable speed glue amount of the dispensing valve according to the embodiment of the invention with reference to the accompanying drawings.
Referring to fig. 1 and 2, the control logic analysis method of the variable-speed glue amount of the glue dispensing valve comprises the following steps:
step 1, calculating the unit glue amount of a glue dispensing valveMg/ms or->Mg/spot: calculating the unit glue weight through gluing and weighing;
step 2, calculating the dispensing track speed of the dispensing valveMillimeter/second;
step 3, calculating the advance and delay distance control glue outlet, wherein the movement of the glue dispensing platform has acceleration time, so that uniform movement in the track is required to be ensured in order to ensure the stable glue outlet of the track, and the specific steps are as follows:
step 31, controlling the speed of the dispensing track, and calculating the set track advance distance: before the dispensing platform controls the dispensing valve to move to the starting point of the dispensing track, the dispensing track speed of the dispensing valve calculated in the step 2 needs to be reachedMillimeter/second, according to actual conditions through the motion acceleration of point gum platform +.>Mm/square second to calculate the advance distance +.>When in practical operation, the dispensing platform controls the dispensing valve to move to at least +.>At the millimeter position, the dispensing valve starts to run along the dispensing track; in step 31, when the dispensing trace is straight, the distance from the start point +.>The millimeter position is in the reverse extension line direction of the dispensing track;
step 32, triggering and sending out glue signals in advance: when the dispensing platform controls the dispensing valve to move to the starting point position of the dispensing track, the dispensing valve is triggered to dispense the glue: because the time delay is generated from the start of the dispensing label to the actual start of the dispensing label from the trigger dispensing valve to the dispensing valveMillisecond, so that the glue outlet signal sent by the glue dispensing platform is advanced according to the actual situation>The millisecond triggers. It should be noted that, the glue sending signal needs to be touched in advance, because a certain time is needed between the sending of the glue sending signal and the receiving of the signal from the equipment for glue sending, and when the track is needed to reach the initial point position in the ideal situation, the actual glue sending is started, otherwise, the glue at the initial point is less than the ideal state, and the glue shape and the weight of the glue are affected; the delay exists objectively, needs to be processed according to the actual situation, and ideally has little influence on the glue shape and the weight of the glue if the delay is very small.
Step 33, triggering a glue closing signal in advance: when the dispensing platform controls the dispensing valve to move to the position of the ending point of the dispensing track, the dispensing valve is triggered to close the glue: when the glue closing signal is triggered to the glue dispensing valve, the glue outlet is actually stopped with time delayIn millisecond, the adhesive closing signal sent by the adhesive dispensing platform needs to be advanced +>The millisecond triggers. It should be noted that, the glue closing signal needs to be triggered in advance because there is a certain delay from sending the glue closing signal to receiving the signal from the device and stopping the glue; if the trigger is not advanced, the end point is subjected to multi-glue; of course, if the trigger is early, the end point is less glue, and the glue shape and the weight of the glue can be influenced; therefore, the early triggering time is moderate; in summary, the delay is objective, needs to be treated according to the actual situation, and ideally, if the delay is very small, the effect on the glue shape and the weight of the glue is not great.
Step 34, calculating a set track delay distance: the dispensing platform controls the dispensing valve to trigger the deceleration stop after passing through the end point of the dispensing track, and in order to reduce the influence of the deceleration process on the dispensing, the delay distance can be properly increased, and the deceleration stop is started when the delay position is reached. It should be noted that the influence of the deceleration process on the glue discharge is as follows: if the target position is the end point, the track starts to decelerate before the end point in order to stop at the end point, and the deceleration process is a speed change process, which can lead to deformation of the glue and deviation of the glue amount from a preset value, the time required for the deceleration process is longer than the time required for the path to pass at a constant speed, namely the glue outlet time is longer than the preset time, and the glue weight is larger.
Preferably, the dispensing valve is a piezoelectric valve or a screw valve, and the speed change control glue amount of the piezoelectric valve and the screw valve is logically consistent. When the dispensing valve is a piezoelectric valve, the dispensing platform calculates the unit adhesive weight by counting the number of points based on the piezoelectric valve. When the dispensing valve is a screw valve, the dispensing platform calculates the unit adhesive weight by time weighing based on the screw valve. Of course, the dispensing valve is not limited to a piezoelectric valve and a screw valve, and can be applied to a control logic analysis method of the variable-speed glue amount of the dispensing valve as long as other types of dispensing valves can calculate the unit glue weight and the track glue outlet.
When the dispensing valve is a piezoelectric valve, in the step 1, the injection of the piezoelectric valve is controlledThe glue is added into a weighing device and weighed to obtain the glue weight +.>Mg, the unit adhesive weight of the piezoelectric valve is calculated to be +.>Mg/spot. When the dispensing valve is a piezoelectric valve, in the step 2, the length of the dispensing track is calculated according to the preset dispensing track>Millimeter, preset dispensing trace glue amount +.>Milligrams; calculating the time of the piezoelectric valve out of a point according to the current parameters of the piezoelectric valve controller>Second, the glue quantity of the dispensing track is +.>Milligram and unit gel weight of piezoelectric valve +.>Mg/point, the total point number of the piezoelectric valve required to strike the dispensing track is calculated asPoint, calculate the dispensing trace speed of the piezoelectric valve from this>Millimeter/second. In the actual situation, the dispensing track is mostly in straight lines and circular arcs; when the dispensing track is in an irregular shape, the track line in the irregular shape can be divided into a plurality of sections of regular curves, and then the length sum of the plurality of sections of regular curves is calculated. The glue quantity of the glue dispensing track is based on the workerThe technological requirements are preset in advance. The piezo valve usually has corresponding parameters and corresponding calculation methods provided by the equipment manufacturer, according to which the time for the piezo valve to come out of a point can be calculated +.>If the equipment manufacturer does not give a corresponding calculation method, the piezoelectric valve can be made to count a certain number of points +.>And timing +.>Then the single point time is +.>That is, ->。
When the dispensing valve is a screw valve, in the step 1, the screw valve is controlled to dispense the glueMillisecond into a weighing device, weigh to get glue weight +.>Mg, the unit adhesive weight of the screw valve is calculated to be +.>Mg/ms. When the dispensing valve is a screw valve, in the step 2, the length of the dispensing track is calculated according to the preset dispensing track>Millimeter, preset dispensing trace glue amount +.>Milligrams; the glue quantity of the dispensing track is->Milligram and unit gel weight of screw valve +.>Mg/ms, the total gel out time of the screw valve is calculated to be +.>Millisecond thus calculate the dispensing trace speed of screw valve +.>Millimeter/second. Under the condition of the screw valve, because the viscosity of the glue is relatively high, the wire drawing and back wiping actions are required to be added after the track is ended, so that the glue is disconnected, and the track glue uniformity is ensured. Similarly, the dispensing track is mostly in straight lines and circular arcs; when the dispensing track is in an irregular shape, the track line in the irregular shape can be divided into a plurality of sections of regular curves, and then the length sum of the plurality of sections of regular curves is calculated. The glue quantity of the glue dispensing track is preset in advance according to the process requirement.
According to the control logic analysis method for the variable-speed glue quantity of the glue dispensing valve, the glue quantity accuracy is ensured on the basis of ensuring a glue dispensing path and forming a uniform glue strip after glue is dispensed on the surface of a workpiece, a glue dispensing platform calculates unit glue weight through glue dispensing weighing, specifically, the glue dispensing platform calculates unit glue weight through a point-based (piezoelectric valve) or a time-based weighing (screw valve), glue dispensing time is obtained through preset glue weight and unit glue weight calculation, and the speed required by glue dispensing track running can be obtained through track length and time required by glue dispensing; ensuring a dispensing path and forming a uniform adhesive tape after dispensing adhesive on the surface of a workpiece by uniformly dispensing adhesive along a set path; the equipment is provided with high-speed IO signals for glue discharging and glue closing, and can trigger signals according to the positions of glue dispensing valves in operation; the glue sending and closing signals are touched at a proper position at a constant speed through a glue dispensing path; the accuracy of the initial point of the track is ensured by triggering the glue sending signal in advance and calculating the preset track advance distance; the accuracy of the track ending point is ensured by triggering the glue closing signal in advance and calculating the set track delay distance; and (3) adding a wire drawing back action at the end point under the condition that the screw valve glue is relatively viscous.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (2)
1. A control logic analysis method for the variable-speed glue quantity of a glue dispensing valve is characterized by comprising the following steps:
step 1, calculating the unit glue amount of a glue dispensing valveMg/ms or->Mg/spot: calculating the unit glue weight through gluing and weighing; the dispensing valve is a piezoelectric valve or a screw valve; when the dispensing valve is a piezoelectric valve, the dispensing platform calculates the unit adhesive weight by counting the number of points based on the piezoelectric valve; when the dispensing valve is a screw valve, the dispensing platform calculates the unit adhesive weight by time weighing based on the screw valve;
step 2, calculating the dispensing track speed of the dispensing valveMillimeter/second;
step 3, calculating the advance and delay distance control glue outlet, which comprises the following specific steps:
step 31, controlling the speed of the dispensing track, and calculating the set track advance distance: before the dispensing platform controls the dispensing valve to move to the starting point of the dispensing track, the dispensing track speed of the dispensing valve calculated in the step 2 needs to be reachedMillimeter/second, according to actual conditions through the motion acceleration of point gum platform +.>Mm/square second to calculate the advance distance +.>When in practical operation, the dispensing platform controls the dispensing valve to move to at least +.>At the millimeter position, the dispensing valve starts to run along the dispensing track;
step 32, triggering an adhesive-sending high-speed IO signal in advance: when the dispensing platform controls the dispensing valve to move to the starting point position of the dispensing track, the dispensing valve is triggered to dispense the glue: because the time delay is generated from the start of the dispensing label to the actual start of the dispensing label from the trigger dispensing valve to the dispensing valveMillisecond, so that the glue outlet signal sent by the glue dispensing platform is advanced according to the actual situation>Triggering in milliseconds;
step 33, triggering the adhesive closing high-speed IO signal in advance: when the dispensing platform controls the dispensing valve to move to the position of the ending point of the dispensing track, the dispensing valve is triggered to close the glue: when the glue closing signal is triggered to the glue dispensing valve, the glue outlet is actually stopped with time delayIn millisecond, the adhesive closing signal sent by the adhesive dispensing platform needs to be advanced +>Triggering in milliseconds;
step 34, calculating a set track delay distance: the dispensing platform controls the dispensing valve to trigger the deceleration stop after passing through the end point of the dispensing track, and in order to reduce the influence of the deceleration process on the dispensing, the delay distance is increased, and the deceleration stop is started when the delay position is reached;
when the dispensing valve is a piezo valve, in step 1,control the piezo valve injectionThe glue is added into a weighing device and weighed to obtain the glue weight +.>Mg, the unit adhesive weight of the piezoelectric valve is calculated to be +.>Milligrams per spot;
when the dispensing valve is a piezoelectric valve, in the step 2, the length of the dispensing track is calculated according to the preset dispensing trackMillimeter, preset dispensing trace glue amount +.>Milligrams; calculating the time of a piezoelectric valve out of a point according to the current parameters of the piezoelectric valve controllerSecond,/->Wherein->Indicating that the piezo valve is hit with a certain number of points, +.>The timing time for counting a certain number of points by the piezoelectric valve is represented; the glue quantity of the dispensing track is->Milligram and unit gel weight of piezoelectric valve +.>Mg/dot, calculateThe total point number of the dispensing track required to be printed by the piezoelectric valve is +.>Point, calculate the dispensing trace speed of the piezoelectric valve from this>Millimeter/second;
when the dispensing valve is a screw valve, in the step 1, the screw valve is controlled to dispense the glueMillisecond into a weighing device, weigh to get glue weight +.>Mg, the unit adhesive weight of the screw valve is calculated to be +.>Mg/ms;
when the dispensing valve is a screw valve, in the step 2, the length of the dispensing track is calculated according to the preset dispensing trackMillimeter, preset dispensing trace glue amount +.>Milligrams; the glue quantity of the dispensing track is->Milligram and unit gel weight of screw valve +.>Mg/ms, the total gel out time of the screw valve is calculated to be +.>Millisecond thus calculate the dispensing trace speed of screw valve +.>Millimeter/second; and (3) adding a wire drawing back action at the end point under the condition that the screw valve glue is relatively viscous.
2. The method for analyzing the control logic of the variable speed glue amount of the glue dispensing valve according to claim 1, wherein the method comprises the following steps: in the step 31, when the dispensing trace is a straight line, the starting point is separated fromThe millimeter position is in the reverse extension line direction of the dispensing track.
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| CN202311393984.XA CN117123433B (en) | 2023-10-26 | 2023-10-26 | Control logic analysis method for variable-speed glue quantity of dispensing valve |
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| CN202311393984.XA CN117123433B (en) | 2023-10-26 | 2023-10-26 | Control logic analysis method for variable-speed glue quantity of dispensing valve |
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| CN117123433B true CN117123433B (en) | 2024-02-20 |
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