CN112147179A - Automatic test method for powder coating gelling time - Google Patents
Automatic test method for powder coating gelling time Download PDFInfo
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- CN112147179A CN112147179A CN202011069186.8A CN202011069186A CN112147179A CN 112147179 A CN112147179 A CN 112147179A CN 202011069186 A CN202011069186 A CN 202011069186A CN 112147179 A CN112147179 A CN 112147179A
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- 239000000843 powder Substances 0.000 title claims abstract description 93
- 238000000576 coating method Methods 0.000 title claims abstract description 84
- 239000011248 coating agent Substances 0.000 title claims abstract description 82
- 238000010998 test method Methods 0.000 title claims abstract description 17
- 238000003756 stirring Methods 0.000 claims abstract description 73
- 238000012360 testing method Methods 0.000 claims abstract description 39
- 230000033001 locomotion Effects 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims description 33
- 238000012544 monitoring process Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 9
- 239000003973 paint Substances 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 7
- 238000001879 gelation Methods 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims description 3
- 238000013019 agitation Methods 0.000 claims 1
- 238000005491 wire drawing Methods 0.000 abstract description 12
- 238000009434 installation Methods 0.000 description 21
- 238000000034 method Methods 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 239000003638 chemical reducing agent Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000155 melt Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 229920001187 thermosetting polymer Polymers 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
- G01N25/12—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering of critical point; of other phase change
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Abstract
The invention discloses an automatic test method for the gelling time of a powder coating, which comprises the following steps: automatically stirring the powder coating in the heater by adopting a stirrer driven by a rotary driving module to form a molten mass; the stirrer is subjected to interval lifting motion through a lifting driving module, the molten mass is subjected to automatic interval wire drawing until the gel wire is stretched and broken, the stretch breaking moment is used as the stop moment of the gelling of the powder coating, the rotary driving module and the lifting driving module are driven by a control module in a control mode, and meanwhile the gelling time of the powder coating is automatically calculated through the control module; the invention reduces the manual operation time, eliminates the difference problem existing in manual operation, and simultaneously effectively improves the test efficiency and the test precision of the powder coating gel time.
Description
Technical Field
The invention belongs to the field of powder coating manufacturing, and particularly relates to an automatic testing method for powder coating gelling time.
Background
The powder coating gelling time is mainly characterized in that a certain amount of thermosetting powder coating is weighed, heated and stirred at a specific temperature until the thermosetting powder coating is melted, the melt is subjected to interval wire drawing until a gel wire is stretched and broken, and the time from the starting time of heating and stirring of the thermosetting powder coating to the time when the gel wire is broken is counted as the powder coating gelling time. The curing speed of the powder coating can be reflected by testing the gelling time of the powder coating, and the powder coating can be used as an important means for quality control in the design and production of powder coating formulas.
The current test criteria for powder coating gel time include: astm d4217-2013 test method standard for determining gel time of thermosetting powder coatings, ISO 8130.6: 2010 powder coating part 6: determination of the gel time of thermosetting powder coatings at a given temperature ". In order to execute the test standard of the powder coating gelling time, the powder coating gelling test equipment commonly used in the industry at present has a temperature control function, the powder coating is put into a heating hole of a heating plate, manual timing, manual stirring and wire drawing are adopted, and then the state of gel wires is visually judged by a tester, and the test has the following main problems:
a. consume more manpower: in the whole process, personnel are required to stir continuously, and the material state in the heating plate is required to be closely observed.
b. The accuracy of the measurement results is poor: there are many different factors that are artificially influenced during the test, including: the difference exists in manual timing, the difference exists in stirring frequency, and the difference also exists in wire drawing state judgment.
c. The traceability of the measurement results is poor: and manual data recording is adopted, so that the situations of recording errors and omissions and the like exist. The applicant finds less disclosure about the detection technology of the gelling time of the powder coating through search, for example, a utility model with the publication number of CN203643376U proposes a gelling instrument with the function of testing the melting point of the powder coating, which belongs to the field of industrial devices. The gelatinizing instrument with the function of testing the melting point of the powder coating comprises a controller, wherein the controller comprises a timer, a temperature display, a power switch and a timer button, the temperature display is connected with a melting platform through a temperature sensor, the melting platform is also connected with a heating device, the heating device is controlled by the power switch, and a programmed temperature rise controller is additionally arranged on the heating device; also, for example, the utility model with the publication number of CN 204389338U proposes a system for detecting the melt level fluidity and gel time of powder coating, which comprises a high-precision weighing electronic balance or scale, a powder coating die assembly, a hot copper plate thermostatic control system and a data measuring instrument for detecting the relevant data in the system. These techniques relate only to improvements in the automated control of the heating module in the gel time testing apparatus and not to improvements in the operations of manual stirring, wire drawing, etc.
Therefore, the applicant hopes to seek a technical scheme to improve the above technical problems in a centralized way, and hopefully further and powerfully advances the intelligent manufacturing level of the powder coating.
Disclosure of Invention
In view of the above, the present invention provides an automatic testing method for powder coating material gel time, which reduces manual operation time, eliminates the problem of difference in manual operation, and effectively improves testing efficiency and testing accuracy of powder coating material gel time.
The technical scheme adopted by the invention is as follows:
an automatic test method for powder coating gel time, the automatic test method comprising: automatically stirring the powder coating in the heater by adopting a stirrer driven by a rotary driving module to form a molten mass; and (3) performing interval lifting motion on the stirrer through a lifting driving module, automatically drawing the molten mass at intervals until the gel wires are stretched and broken, wherein the stretch breaking moment is used as the stop moment of the gelling of the powder coating, the rotary driving module and the lifting driving module are controlled and driven by a control module, and meanwhile, the gelling time of the powder coating is automatically calculated through the control module.
Preferably, the heater is provided with a heating plate for placing powder coating, and after the heating plate reaches the target heating temperature, the powder coating is added into the heating plate.
Preferably, a time point at which automatic stirring is started after the powder coating is added to the heater is set as a start time point at which the powder coating is gelled, and a time between the cut-off time point and the start time point is set as a gelling time of the powder coating.
Preferably, the control module is provided with a timer for automatically calculating the gel time of the powder coating based on the start time and the stop time.
Preferably, the automatic stirring speed is in the range of 2 to 10 revolutions per second.
Preferably, the stretching distance of the stirrer ranges from 2 cm to 5 cm; the stretching interval time ranges from 2 to 4 seconds.
Preferably, whether the gel yarn is broken or not is automatically observed and judged through a vision system, and when the gel yarn is judged to be broken, the control module stops stirring and stretching actions and automatically records the stretching and breaking moment.
Preferably, when the gel wire breaks, the visual system can observe that the gel wire breaks, and the breaking point signal is used as a signal for judging that the gel wire breaks.
Preferably, the vision system adopts a camera in communication connection with the control module, the camera is provided with a fracture monitoring interface corresponding to the gel wire, and when a gel wire fracture point occurs on the fracture monitoring interface, the fracture monitoring interface takes a signal of the fracture point as a signal for judging that the gel wire is fractured.
Preferably, the control module is in communication connection with a display screen, displays the gelling time of the powder coating through the display screen, and can automatically record and store the gelling time.
The working principle and the advantages of the invention are as follows:
according to the invention, the stirrer driven by the rotary driving module is provided for replacing a manual stirring mode to automatically stir the powder coating to form a molten mass, so that the manual operation time is reduced, and the problem of difference caused by manual stirring is avoided; the lifting driving module is adopted to carry out interval lifting movement on the stirrer, so that automatic interval wire drawing of the molten mass is realized until the gel wires are stretched and broken, the manual operation time is further reduced, and the problem of difference caused by manual wire drawing is avoided; meanwhile, the rotary driving module and the lifting driving module are controlled and driven by the control module, and the control module automatically calculates the gelling time of the powder coating, so that the problem of difference caused by manual timing is avoided; in the test process of the powder coating gel time, the automatic stirring, interval wire drawing and timing are realized, the manual operation time is reduced, and the difference problem existing in manual operation is eliminated, so that the test efficiency and the test precision of the powder coating gel time are effectively improved by implementing the method.
The invention further provides a method for automatically observing and judging whether the gel wire is broken through the vision system, stopping stirring and stretching when the gel wire is judged to be broken, automatically recording the stretching and breaking time, further replacing manual visual observation to judge whether the gel wire is broken, avoiding the difference problem caused by manual wire drawing state judgment, and the vision system takes the breakpoint signal of the gel wire as a signal for judging the breaking of the gel wire, thus realizing sensitive automatic recording of the stretching and breaking time and further being beneficial to the test precision of the invention.
The invention further provides a stirrer, which is particularly provided with an eccentric installation kit, wherein the output end of a motor is connected with the stirring rod through the eccentric installation kit, so that the stirring rod performs eccentric circular motion under the rotation drive of the motor, a good stirring effect on materials is realized only through the stirring rod, and auxiliary structures such as any impeller and the like do not need to be arranged, so that the stirrer is simple in structure and small in occupied volume; when the stirrer is applied as a test for gel time of powder coating, the stirrer has good stirring effect on the powder coating in the heating hole.
Drawings
FIG. 1 is a schematic structural diagram of an automatic testing apparatus for gel time of powder coating in example 1 of the present invention;
FIG. 2 is an enlarged view of the structure at A in FIG. 1;
FIG. 3 is a schematic structural diagram of an automatic testing apparatus for gel time of powder coating in embodiment 2 of the present invention;
FIG. 4 is a side view of FIG. 3;
FIG. 5 is an enlarged view of the structure at B in FIG. 4;
FIG. 6 is a photograph of a display screen showing no gel breaking point on the fracture monitoring interface in example 2 of the present invention;
FIG. 7 is a photograph of a display screen showing gel breakpoints occurring in the fracture monitoring interface in example 2 of the present invention;
FIG. 8 is a schematic view of the structure of a stirrer in example 3 of the present invention;
FIG. 9 is a schematic view of the structure of FIG. 8 at another angle;
FIG. 10 is a cross-sectional view of FIG. 8;
fig. 11 is an exploded view of fig. 8.
Detailed Description
The embodiment of the invention discloses an automatic test method for the gelling time of a powder coating, which comprises the following steps: automatically stirring the powder coating in the heater by adopting a stirrer driven by a rotary driving module to form a molten mass; the stirrer is lifted and lowered at intervals through the lifting driving module, the molten mass is automatically drawn at intervals until the gel wires are stretched and broken, the stretch breaking moment is used as the stop moment of the gelling of the powder coating, the rotary driving module and the lifting driving module are driven through the control module, and meanwhile the gelling time of the powder coating is automatically calculated through the control module.
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1: referring to fig. 1, an automatic testing apparatus 1 for gel time of powder coating includes a heater 10 for heating and melting the powder coating, specifically, in the present embodiment, a heating copper plate 11 is disposed on the heater 10, and a heating hole 12 for placing the powder coating is further disposed on the heating copper plate 11; as further shown in fig. 2, a stirrer 20 for stirring the powder coating in the heating hole 12 is arranged above the heating copper plate 11, and the stirrer 20 is controlled by the rotation driving module 30 to rotate to stir the powder coating melt and uniformly heat the powder coating melt; the rotary driving module 30 is arranged on the lifting driving module 40 to perform interval lifting motion and is used for automatically performing interval lifting wire drawing on a melt; the rotation driving module 30 and the lifting driving module 40 are respectively in communication connection with the control module 50 to realize driving control; preferably, in the present embodiment, the control module 50 is provided with a timer for automatically calculating the gel time of the powder coating material based on the start time and the end time, the gel time of the powder coating material being equal to the time between the end time and the start time; the control module 50 is in communication connection with the display screen 60, displays the gelling time of the powder coating through the display screen 60, and can automatically record and store the gelling time;
referring to fig. 4 and fig. 5 in combination, preferably, in the present embodiment, the rotation driving module 30 includes a first motor 31 (specifically, a servo motor may be used), the first motor 31 is connected to the agitator 20 through a transmission assembly, the agitator 20 includes a stirring rod 21, the stirring rod 21 is connected to the first motor 31 in an eccentric installation manner, and when the first motor 31 rotates, the stirring rod 21 makes an eccentric circular motion relative to the first motor 31, so as to achieve effective stirring of the powder coating, and avoid a problem of poor stirring effect caused by concentric rotation of the stirring rod 21; the transmission assembly adopts a transmission shaft or a speed reducer, preferably, the transmission assembly adopts a gear speed reducer which is installed and connected with the first motor 31, and the output end of the gear speed reducer is fixedly installed and connected with the stirring rod 21 to realize the rotary driving of the stirring rod 21;
preferably, in the present embodiment, the lifting driving module 40 includes a second motor 41 (specifically, a servo motor may be used) installed on the frame 70, wherein the frame 70 is provided with a lifting slide rail 71, and the lifting slide rail 71 is slidably installed with a lifting slider 72; the second motor 41 realizes the lifting sliding drive of the lifting slider 72 through the worm gear assembly 42; the lifting slide block 72 is fixedly installed and connected with the rotary driving module 30; specifically, in the present embodiment, the first motor 31 is installed on the driving installation plate 73, the driving installation plate 73 is fixedly installed and connected with the lifting slider 72, and when the second motor 41 drives the lifting slider 72 to slide on the lifting slide rail 71, the lifting slider 72 drives the entire rotation driving module 30 to synchronously lift and slide up and down at intervals.
Example 2: the other technical solutions of this embodiment 2 are the same as those of embodiment 1, except that please refer to fig. 3, fig. 4 and fig. 5, the automatic testing device 1' in this embodiment 2 further includes a vision system 80, and the vision system 80 automatically observes and judges whether the gel thread 2 is broken; particularly preferably, the vision system 80 employs a camera 81 (which may particularly employ an industrial-grade camera) in communication connection with the control module 50, the camera 81 is provided with a fracture monitoring interface 81a corresponding to the gel filament 2 (the interface may employ a rectangular or square or circular or other special-shaped properties, and the fracture monitoring interface 81a may be projected on the display screen 60 for a human to view); referring to fig. 6 and fig. 7, when the breakage monitor interface 81a has a gel yarn breakage point, the breakage point signal is used as a signal for determining that the gel yarn 2 is broken.
Example 3: the remaining technical solutions of this embodiment 3 are the same as that of embodiment 1, except that, referring to fig. 8 to 11, this embodiment 3 proposes a stirrer 20 'including a stirring rod 21' installed and connected to a gear reducer of a first motor 31 ', an eccentric installation kit 22 installed at an output end of the gear reducer, the eccentric installation kit 22 being relatively rotatably installed with the stirring rod 21', and the stirring rod 21 'making eccentric circular motion relative to the first motor 31'; preferably, in the present embodiment, the stirring rod 21 'includes a stirring rod body 211' and a stirring mounting sleeve 212 'fixedly mounted as one body, wherein the stirring mounting sleeve 212' is locked as one body with the stirring rod body 211 'by a screw fastener 213'; the upper end part of the stirring rod body 211 ' is fixedly arranged in the stirring installation sleeve 212 ', and the stirring installation sleeve 212 ' is connected with the eccentric installation sleeve 22 in a relatively rotatable manner; the stirring rod body 211' is a wood stirring rod body, and in other embodiments, a metal stirring rod body or other stirring rod bodies made of other materials can be used; the lower end of the stirring rod body 211' is in a conical shape and is correspondingly matched with the shape of the heating hole 12, so that the uniform stirring effect of the powder coating is further facilitated;
preferably, in order to facilitate the installation strength and the installation convenience of the eccentric installation kit 22, in the present embodiment, the eccentric installation kit 22 includes an installation block 221 fixedly sleeved with the output end of the gear reducer, the installation block 221 is fixedly installed and connected with an eccentric installation sleeve 222, an eccentric installation shaft 223 is fixedly inserted in the eccentric installation sleeve 222, and the eccentric installation shaft 223 is relatively rotatably installed with the stirring rod body 211 'and the stirring installation sleeve 212'; more specifically, preferably, in order to facilitate the quick assembly and disassembly of the stirring mounting sleeve 212 ', in the present embodiment, a bearing 224 is provided between the stirring mounting sleeve 212' and the eccentric mounting shaft 223; the stirring mounting sleeve 212 ' includes a stirring mounting sleeve body 212 ' b having a mounting cavity 212 ' a, a lower end portion of the eccentric mounting shaft 223 is relatively rotatably mounted in the mounting cavity 212 ' a, and a stirring mounting sleeve cover plate 214 ' is fixedly mounted on the stirring mounting sleeve body 212 ' b, specifically, in the present embodiment, the stirring mounting sleeve cover plate 214 ' is fixedly mounted integrally with the stirring mounting sleeve body 212 ' b by a plurality of detachable screw fasteners 215 '.
Example 4: this example 4 proposes an automatic test method for the gelation time of a powder coating material, based on the use of the automatic test apparatus 1 'of example 2, in which the stirrer of the automatic test apparatus is the stirrer 20' of example 3, the automatic test method comprising the following steps:
s10), after ensuring that the heating copper plate 11 reaches the target heating temperature, adding powder paint into the heating hole 12 of the heating copper plate 11, specifically, the free heating temperature adjustment of the heating copper plate 11 can be realized through the temperature control module 13, in the practical application, the setting of the target heating temperature is performed according to the curing temperature of the powder paint itself (the curing temperature range of the powder paint is usually 120-240 ℃, certainly, it can be higher or lower, and the embodiment has no particular limitation on this case);
s20), starting the first motor, driving the stirring rod 21 'to automatically stir the powder coating located in the heating hole 12 to form a melt, and using the time when the timer of the control module 50 starts to automatically stir after adding the powder coating into the heating hole 12 as the starting time when the powder coating is gelled, wherein in the specific implementation, the automatic stirring speed range of the stirring rod 21' is set to 2-10 r/S;
s30), starting the second motor 41, driving the stirring rod 21 'to perform interval lifting motion, and performing automatic interval wire drawing on the melt, wherein particularly preferably, the range of the stretching distance (namely, the lifting distance) of the stirring rod 21' is set to be 2-5 cm; the stretching interval time (namely the lifting interval time) is set to be 2-4 seconds;
s40), referring to fig. 6, the intermittent drawing action is continuously executed during the time when the gel breaking point does not occur on the fracture monitoring interface 81a until the gel breaking point occurs on the fracture monitoring interface 81a of the vision system 80 (see fig. 7), the vision system 80 sends the breaking point signal to the control module 50, and the timer of the control module 50 takes the stretch breaking time as the cut-off time of the powder coating gelling;
s50), the timer of the control module 50 is used to automatically calculate the gel time of the powder coating based on the start time and the stop time, the gel time of the powder coating is equal to the time between the stop time and the start time, the gel time of the powder coating is displayed through the display screen 60, and the automatic recording and storage are performed.
By performing the above operation steps, the automatic test of the gelling time of the powder coating is completed.
It should be noted that, in actual implementation of the present application, the stirring speed, the lifting interval distance, and the lifting interval time of the stirring rod 21' are specifically set according to requirements of an executed powder coating gelation time test standard (such as astm d4217-2013 or I SO 8130.6: 2010 or other test standards), and specifically, in implementation, the stirring speed, the lifting interval distance, and the lifting interval time can be flexibly input through the parameter interface 3 (see fig. 6 and 7) in communication connection with the control module 50, and are recorded and stored, SO as to facilitate subsequent tracing; these are all conventional technical choices for a person skilled in the art and are therefore not described in detail in the embodiments of the present application.
In order to illustrate the positive technical effects that can be produced after the application is implemented: the applicant retrieved production test data of some products in 2018 from SAP systems, wherein the consumption time of the powder coating gel time test is as shown in table 1 below:
table 1: cumulative gel time for some automotive products
The workload of the above 9 types of automobile products of the company on the gel time test is about 29 working days in total, and the whole process of the test requires the whole process of stirring, drawing wires at intervals, recording and testing by the testers, so that the work consumes much time; by implementing the technical scheme of the invention, automatic stirring, interval wire drawing, timing and recording are realized, the manual operation time is obviously saved, and the difference problem existing in manual operation is eliminated, so that the test efficiency and the test precision of the powder coating gelling time are effectively improved by implementing the method.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. An automatic test method for gel time of powder coating is characterized in that the automatic test method comprises the following steps: automatically stirring the powder coating in the heater by adopting a stirrer driven by a rotary driving module to form a molten mass; and (3) performing interval lifting motion on the stirrer through a lifting driving module, automatically drawing the molten mass at intervals until the gel wires are stretched and broken, wherein the stretch breaking moment is used as the stop moment of the gelling of the powder coating, the rotary driving module and the lifting driving module are controlled and driven by a control module, and meanwhile, the gelling time of the powder coating is automatically calculated through the control module.
2. The automatic test method of claim 1, wherein the heater is provided with a heating plate for placing powder paint thereon, and powder paint is added into the heating plate after the heating plate reaches a target heating temperature.
3. The automatic test method according to claim 1, wherein a time at which automatic stirring is started after the powder paint is added to the heater is taken as a start time at which the powder paint is gelled, and a time between the cut-off time and the start time is taken as a gelling time of the powder paint.
4. The automatic test method according to claim 3, characterized in that the control module is provided with a timer for automatically calculating the gel time of the powder coating material based on the start time and the stop time.
5. The automated testing method of claim 1, wherein the automated agitation speed ranges from 2 to 10 revolutions per second.
6. The automated testing method of claim 1, wherein the agitator has a stretch distance in the range of 2-5 cm; the stretching interval time ranges from 2 to 4 seconds.
7. The automatic test method according to claim 1, wherein whether the gel yarn is broken is automatically observed and judged by a vision system, and when the gel yarn is judged to be broken, the control module stops the stirring and stretching actions and automatically records the moment of the tensile breaking.
8. The automatic test method according to claim 7, wherein when the gel thread breaks, the visual system observes that the gel thread breaks, and the breaking point signal is used as a signal for determining that the gel thread breaks.
9. The automatic testing method according to claim 7, wherein the vision system employs a camera in communication connection with the control module, the camera is provided with a fracture monitoring interface corresponding to the gel wire, and when a gel wire fracture point occurs on the fracture monitoring interface, the fracture monitoring interface takes a signal of the fracture monitoring interface as a signal for judging that the gel wire is fractured.
10. The automatic test method of claim 1, wherein the control module is communicatively connected to a display screen, and the gelation time of the powder coating is displayed through the display screen and can be automatically recorded and stored.
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