CN111833691B

CN111833691B - Paint spraying piece for paint spraying teaching, paint spraying device and teaching method

Info

Publication number: CN111833691B
Application number: CN202010535421.XA
Authority: CN
Inventors: 陈东生; 吴正琴
Original assignee: Zhangzhou Institute of Technology
Current assignee: Zhangzhou Institute of Technology
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2022-04-19
Anticipated expiration: 2040-06-12
Also published as: CN111833691A

Abstract

The invention discloses a paint spraying part for paint spraying teaching, a paint spraying device and a teaching method, which belong to the field of paint spraying teaching. The invention has the beneficial effects that: utilize the water characteristics that discolour of silica gel granule, the one deck evenly distributed has the discoloration layer of silica gel granule of discolouing at the acceptor surface that sprays paint, spun paint water replaces in the spray gun, and the homogeneity that sprays paint is appraised according to the condition of discolouing of silica gel granule, and whole in-process all adopts the water spray, and the evaluation standard adopts silica gel to meet the water principle of discolouing moreover, and the effect is directly perceived accurate, has realized no blind spot and has detected.

Description

Paint spraying piece for paint spraying teaching, paint spraying device and teaching method

Technical Field

The invention relates to the field of paint spraying teaching, in particular to a paint spraying piece for paint spraying teaching, a paint spraying device and a teaching method.

Background

Traditional teaching training of spraying paint is mainly through student's hand holding the spray gun and removing, by spray gun blowout paint, the student treats the piece that sprays paint through the speed and the spray gun wobbling angle that the adjustment removed the spray gun and sprays paint. And the student will train out outstanding painting technique and need long-term painting training, like this, will make paint and wait to paint the consume volume increase of piece, and the teaching cost of spraying paint is high to, the pungent smell that paint has still will seriously influence student's healthy.

The paint spraying teaching mode is changed, and particularly, the paint is replaced by other materials, so that the paint spraying teaching method is an improved method in the paint spraying teaching training, and the purpose of paint spraying teaching can be achieved under the condition that the influence of the paint on students is reduced. For example, a multifunctional training frame applied to automobile paint spraying teaching and an automobile paint spraying teaching method, with the patent number of 201910479656.9, replace paint with water, spray water on a paint spraying panel, enter a measuring cup through a collecting hole in the paint spraying panel to collect and measure the water, and judge the spraying effect by measuring the amount of the water. However, the method has the problems that the evaluation error is large, particularly the phenomenon of local paint unevenness is difficult to judge, a test blind spot exists and the like.

Disclosure of Invention

Aiming at the problems of large harm to the body of a student, large evaluation error, test blind spots and the like in the prior art, the invention provides a paint spraying piece for paint spraying teaching, a paint spraying device and a teaching method. The specific technical scheme is as follows:

the utility model provides a teaching of spraying paint is with piece that sprays paint, is in including the acceptor that sprays paint and adhering to the discoloration layer of acceptor one side sprays paint, evenly distributed has the silica gel granule that discolours in the discoloration layer.

Preferably, the color-changing layer is a sheet material which takes a transparent porous elastomer as a carrier and uniformly distributes color-changing silica gel particles in the transparent porous elastomer. Transparent porous elastomer is used as a carrier, the allochroic silicagel particles are uniformly distributed in the transparent porous elastomer, countless independent cavities which are distributed in three-dimensional space and used for containing the allochroic silicagel particles are formed in the transparent porous elastomer, and water enters the cavities through the internal pores of the transparent porous elastomer and is absorbed by the allochroic silicagel particles in the transparent porous elastomer, so that the color of the allochroic silicagel particles is changed.

Preferably, a supporting frame is arranged around the outer edge of the color changing layer, and the supporting frame is fixedly installed on the paint spraying receptor.

Preferably, the support frame comprises two sets of slide rail fixing slide rails and a moving slide rail which are perpendicular to each other, the fixing slide rails and the moving slide rail are intersected to form a rectangular structure, the fixing slide rail is fixedly installed on the paint spraying receptor and is perpendicular to the moving slide rail, and the moving slide rail can move along the length direction of the fixing slide rail. Adopt the braced frame of variable size to stretch the discoloration layer, the size in the inside hole of transparent porous elastomer can be adjusted according to braced frame's flexible, and when the water spray, spun drop of water can change colour from the outer layer through the hole and get into the nexine layer upon layer, and the nexine is more in drop of water infiltration discoloration layer, and its colour shows more deeply to can judge the even degree of water spray through the shade of discoloration layer surface colour.

Preferably, the supporting frame is composed of more than four bar magnets, and each bar magnet is provided with a clamping opening for clamping the color changing layer; the surface of the paint spraying receptor is metal. And clamping the edge of the color-changing layer on the surface of the paint spraying receptor by using the magnetic force of the magnet.

Preferably, a drying plate is further arranged between the color changing layer and the paint spraying receptor. After the water spraying is finished, the color-changing silica gel particles in the color-changing layer can be dried by using the drying plate, so that the requirement of paint spraying teaching is met.

Preferably, the thickness of the color-changing layer is 10-40mm, and the diameter of the color-changing silica gel particles is 1-5 mm. At least more than two layers of the color-changing silica gel particles are distributed on the color-changing layer.

Preferably, uniform color-changing silica gel particles are uniformly distributed in the color-changing layer, and the weight of the color-changing silica gel particles in the color-changing layer accounts for 55-80 wt%.

Preferably, the allochroic silicagel particles are composed of two types of silicagel particles with the particle size of 2mm and the particle size of 4mm, and the mixing weight ratio of the two types of silicagel particles is 2: 1.

preferably, the cellular elastomer is a transparent cellular polyurethane elastomer.

Preferably, a foaming agent is also uniformly distributed in the color-changing layer, and the foaming agent is a BN foaming agent.

Preferably, the weight ratio of the foaming agent is 0.5-1.6 wt%.

Preferably, heat conducting particles are uniformly distributed in the color changing layer.

Preferably, the heat conducting particles are metal particles composed of one or more of iron particles, copper particles and aluminum particles.

The invention also provides a paint spraying device for paint spraying teaching, which comprises the paint spraying piece and a color detection assembly positioned on the paint spraying piece.

Preferably, the color detection assembly comprises a CCD camera, a microprocessor, a data processing assembly, a storage device, a clock device, a drying plate heating assembly and an alarm device, wherein an output end of the CCD camera is connected with an input end of the microprocessor, an output end of the microprocessor is respectively connected with input ends of the storage device, the clock device, the drying plate heating assembly and the alarm device, the data processing assembly is bidirectionally connected with the microprocessor, the drying plate heating assembly is a resistor member and is located inside the drying plate to conduct heat to the drying plate to heat the drying plate.

Preferably, the CCD camera with it links to each other through the mounting bracket to spray paint the piece, mounting bracket one end with a border swivelling joint sprays paint, and the other end is fixed with the CCD camera, and during the detection the CCD camera is located directly over the discoloration layer.

The invention also provides a paint spraying teaching method, which adopts the paint spraying device and comprises the following steps:

the method comprises the following steps: moving the CCD camera to a detection position, taking a picture of the surface condition of the color changing layer, transmitting the picture to a microprocessor for processing, starting a drying plate to dry the color changing layer if the color of the surface of the color changing layer is not met, and detecting again until the teaching requirement is met;

step two: moving the CCD camera to a position to be detected, holding a spray gun by hand, and simulating a paint spraying action to aim at a color changing layer on a paint spraying piece to uniformly spray water;

step three: and after the water spraying is finished, the CCD camera is moved to the detection position, the surface condition of the color changing layer is photographed, the picture is transmitted to the microprocessor for processing, and the processing result is stored.

Adopt the CCD camera to shoot the discoloration layer surface after spraying paint to convey microprocessor with it and preserve, not only can utilize image recognition and processing to carry out accurate processing to the colour effect after spraying paint, obtain the objective score of the effect of spraying paint, can take notes student's learning process moreover, the high-efficient score of spraying paint of study at every turn of preparation record student.

Has the advantages that:

the technical scheme of the invention has the following beneficial effects:

(1) utilize the water characteristics of discolouing of silica gel granule, there is the discoloration layer of discolouing silica gel granule at the acceptor surface that sprays paint adhesion one deck evenly distributed, spun paint is replaced with water in the spray gun, when the simulation sprays paint, discolous after the silica gel granule contacts spun water in the spray gun, the homogeneity that sprays paint is appraised according to the condition of discolouing of silica gel, whole in-process all adopts the water spray, and the evaluation standard adopts the principle that silica gel met water and discolous moreover, the effect is directly perceived accurate, no blind spot has been realized and has been detected.

(2) Transparent porous elastomer is used as a carrier, the allochroic silicagel particles are uniformly distributed in the transparent porous elastomer, countless independent cavities which are distributed in three-dimensional space and used for containing the allochroic silicagel particles are formed in the transparent porous elastomer, and water enters the cavities through the internal pores of the transparent porous elastomer and is absorbed by the allochroic silicagel particles in the transparent porous elastomer, so that the color of the allochroic silicagel particles is changed.

(3) Set up the stoving board between the acceptor that sprays paint and discoloration layer, before the teaching, can dry discoloration layer through the stoving board for the silica gel granule that discolours is in the dry condition, then teaches again, makes same piece that sprays paint can obtain used repeatedly fast, has improved its result of use.

(4) Adopt the CCD camera to shoot the discoloration layer surface after spraying paint to convey microprocessor with it and preserve, not only can utilize image recognition and processing to carry out the accuracy processing to the colour effect after spraying paint, obtain the objective score of the effect of spraying paint, can take notes student's learning process moreover, the high-efficient score of learning to spray paint at every turn of recording student.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a front view of the preferred painting apparatus of the present invention;

FIG. 2 is a diagram illustrating the connection relationship between the components of the preferred color detection assembly of the present invention;

FIG. 3 is a schematic view of a preferred structure of the paint-spraying member of the present invention;

FIG. 4 is a first preferred bar magnet structure of the present invention;

FIG. 5 is a second preferred structure of the bar magnet of the present invention.

In the figure: 1. painting a piece; 11. a lacquer receptor; 12. a color-changing layer; 13. drying the plate;

2. a color detection component; 21. a CCD camera; 22. a microprocessor; 23. a data processing component;

24. a storage device; 25. a clock device; 26. a drying plate heating assembly; 27. an alarm device;

28. an artificial input port; 29. a display device; 3. a mounting frame; 4. a support frame;

41. a bar magnet; 42. an upper magnet block; 43. a lower magnet block; 44. a first upper surface;

45. a second upper surface; 46. externally pressing the strips; 47. an inner pressing strip; 48. fixing the slide rail;

49. and moving the slide rail.

Detailed Description

In order to make 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 described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

This embodiment utilizes allochroic silica gel to meet the water characteristic of discolouing, the piece surface that will spray paint designs into the allochroic silica gel structure, spun paint replaces with water in the spray gun, when the simulation sprays paint, allochroic silica gel discolours after contacting spun water in the spray gun, appear different discoloration effect according to the different allochroic silica gel of the water yield of spraying on surface, thereby the homogeneity that sprays paint is appraised according to the condition of discolouing of silica gel, whole in-process all adopts the water spray, and the evaluation standard adopts silica gel to meet the water principle of discolouing, the effect is directly perceived accurate, no blind spot has been realized and has been detected.

As shown in fig. 1 to 3, the painting apparatus for teaching painting comprises a painting member 1 and a color detection unit 2 provided on the painting member 1. The paint spraying piece 1 comprises a paint spraying receptor 11 and a color changing layer 12 attached to one side of the paint spraying receptor 11, wherein color changing silica gel particles 121 are uniformly distributed in the color changing layer 12. A drying plate 13 is arranged between the color changing layer 12 and the paint spraying receptor 11. After the water spraying is finished, the color-changing silica gel particles in the color-changing layer can be dried by using the drying plate, so that the requirement of paint spraying teaching is met.

As a preferred embodiment, the color detecting assembly 2 includes a CCD camera 21, a microprocessor 22, a data processing assembly 23, a storage device 24, a clock device 25, a drying plate heating assembly 26, an alarm device 27, an artificial input port 28 and a display device 29, referring to fig. 2, an output end of the CCD camera 21 is connected to an input end of the microprocessor 22, an output end of the microprocessor 22 is connected to input ends of the storage device 24, the clock device 25, the drying plate heating assembly 26 and the alarm device 27, respectively, the data processing assembly 23 is bidirectionally connected to the microprocessor 22, and the drying plate heating assembly 26 is a resistor, is located inside the drying plate 13, and conducts heat to the drying plate 13 to heat the drying plate.

An output of the manual input port 28 is connected to an input of the microprocessor 22 and an input of a display device 29 is connected to an output of the microprocessor 22. The display device 29 is preferably a display screen, which can be used to display the painting teaching in real time and also to retrieve the data and picture information of the previous teaching.

CCD camera 21 with it links to each other through mounting bracket 3 to spray paint 1, 3 one end of mounting bracket with 1 border swivelling joint sprays paint, and the other end is fixed with CCD camera 21, and when detecting CCD camera 21 is located directly over discoloration layer 12.

When the intelligent painting teaching device works, the CCD camera directly shoots the color changing layer, the color on the surface of the color changing layer forms a digital picture, the digital picture is transmitted to the microprocessor for processing and evaluation, the uniformity of the color distribution is judged, scores are formed, the scores and the corresponding picture are stored in the storage device, the operation is convenient to call and read at any time, and the clock device can record the specific time of painting teaching.

Alarm device's setting, mainly used stoving operation in-process, CCD camera is in the test position always in stoving in-process, when the discoloration layer stoving effect reaches the requirement of spraying paint, starts alarm device for the piece that sprays paint gets into the ready state of spraying paint.

The manual input port 28 may input and store the student information and the teaching content and other related data into the microprocessor, and the microprocessor may further be provided with a display device for displaying the input information and the student score information.

Referring to fig. 3, the color-changing layer 12 is a sheet material having a transparent porous elastomer 122 as a carrier and uniformly distributing color-changing silica gel particles 121 in the transparent porous elastomer 122. The porous elastomer is transparent porous polyurethane elastomer. Transparent porous elastomer is used as a carrier, the allochroic silicagel particles are uniformly distributed in the transparent porous elastomer, countless independent cavities which are distributed in three-dimensional space and used for containing the allochroic silicagel particles are formed in the transparent porous elastomer, and water enters the cavities through the internal pores of the transparent porous elastomer and is absorbed by the allochroic silicagel particles in the transparent porous elastomer, so that the color of the allochroic silicagel particles is changed.

And a supporting frame 4 is arranged around the outer edge of the color changing layer 12, and the supporting frame 4 is fixedly arranged on the paint spraying receptor 11.

The supporting frame 4 comprises two sets of mutually perpendicular sliding rail fixing sliding rails 48 and moving sliding rails 49, the fixing sliding rails 48 and the moving sliding rails 49 are intersected to form a rectangular structure, the fixing sliding rails 48 are fixedly installed on the paint spraying receptor 11 and are perpendicular to the moving sliding rails 49, and the moving sliding rails 49 can move along the length direction of the fixing sliding rails 48. Adopt the braced frame of variable size to stretch the discoloration layer, the size in the inside hole of transparent porous elastomer can be adjusted according to braced frame's flexible, and when the water spray, spun drop of water can change colour from the outer layer through the hole and get into the nexine layer upon layer, and the nexine is more in drop of water infiltration discoloration layer, and its colour shows more deeply to can judge the even degree of water spray through the shade of discoloration layer surface colour.

Because the paint generated during paint spraying is in a mist shape, the particle diameter of the paint is very small, when water is sprayed, the sprayed water is also in a mist shape, the particle diameter of the water is 80-150 mu m, higher requirements are put on the color changing layer, because if the water particles in the mist shape are in a divergence shape along contact points after contacting the color changing layer, the water particles in the mist shape also have certain influence on the surrounding color changing layer, although the influence is not very large, the divergence can be completely reduced through the design of the color changing layer. Specifically, the pore diameter of the color changing layer reaches 200-400 mu m through stretching of the supporting frame, and the pore area in the color changing layer is increased, so that the total pore area ratio reaches 50-60%, and water mist particles can enter the inner layer of the color changing layer through pores, so that the influence of diffusion of the water particles on the surface of the color changing layer on teaching results is reduced.

As a preferred embodiment, the supporting frame 4 is composed of more than four bar magnets 41, each of which is provided with a clamping opening for clamping the color-changing layer 12; the surface of the paint spraying receptor 11 is metal. And clamping the edge of the color-changing layer on the surface of the paint spraying receptor by using the magnetic force of the magnet.

In a preferred embodiment, the bar magnet 41 is composed of an upper magnet block 42 located at the upper side and a lower magnet block 43 located at the lower side, wherein a first upper surface 44 of the lower magnet block 43 close to the outer edge of the color changing layer 12 is a horizontal plane or an inclined plane inclined to the outside, and a second upper surface 45 of the lower magnet block 43 far from the outer edge of the color changing layer 12 is an inclined plane inclined to the inside; the upper magnet block 42 comprises an inner pressing strip 46 and an outer pressing strip 47 which are arranged inside and outside, the outer pressing strip 46 is pressed on the first upper surface 44, and the inner pressing strip 47 is pressed on the second upper surface 45. The surface of the paint spraying receptor 11 is metal. See fig. 4 and 5 for two cases where the first upper surface 44 is a horizontal surface and a sloped surface, respectively.

In a preferred embodiment, the thickness of the color-changing layer 12 is 10-40mm, and the diameter of the color-changing silica gel particles is 1-5 mm. At least more than two layers of the color-changing silica gel particles are distributed on the color-changing layer. Uniform color-changing silica gel particles are uniformly distributed in the color-changing layer 12, and the weight ratio of the color-changing silica gel particles in the color-changing layer is 55-80 wt%.

As a preferred embodiment, the allochroic silicagel particles are composed of two kinds of size specification silicagel particles with the particle size of 2mm and the particle size of 4mm, and the mixing weight ratio of the two kinds of the silicagel particles is 2: 1.

in a preferred embodiment, a foaming agent is uniformly distributed in the color-changing layer 12, and the foaming agent is a BN foaming agent. The weight ratio of the foaming agent is 0.5-1.6 wt%.

As a preferred embodiment, heat conducting particles are uniformly distributed in the color changing layer. The heat conducting particles are metal particles consisting of one or more of iron particles, copper particles and aluminum particles.

The embodiment also provides a paint spraying teaching method, which adopts the paint spraying device and comprises the following steps:

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A paint spraying part for paint spraying teaching is characterized by comprising a paint spraying receptor and a color changing layer attached to one side of the paint spraying receptor, wherein a drying plate is further arranged between the color changing layer and the paint spraying receptor; the color-changing layer is formed by taking a transparent porous elastomer as a carrier, independent cavities which are distributed in a three-dimensional space and used for containing the color-changing silica gel particles are formed in the color-changing layer, and water mist generated by water spraying enters the independent cavities through pores in the transparent porous elastomer and is absorbed by the color-changing silica gel particles;

the supporting frame is arranged around the outer edge of the color changing layer and fixedly mounted on the paint spraying receptor, the supporting frame comprises two groups of mutually perpendicular sliding rail fixing sliding rails and moving sliding rails, the fixing sliding rails and the moving sliding rails are intersected to form a rectangular structure, the fixing sliding rails are fixedly mounted on the paint spraying receptor and are perpendicular to the moving sliding rails, and the moving sliding rails can move along the length direction of the fixing sliding rails;

the support frame is stretched to ensure that the pore diameter of the color changing layer is 200-400 mu m, and the pore area accounts for 50-60% of the total area ratio.

2. The painting tool for teaching painting according to claim 1, wherein the supporting frame is composed of four or more bar magnets, each of which is provided with a nip for holding the color-changing layer; the surface of the paint spraying receptor is metal.

3. The painting member for teaching painting according to claim 1, wherein the thickness of the discoloring layer is 10 to 40mm, and the diameter of the discoloring silica gel particles is 1 to 5 mm.

4. A painting apparatus for teaching paint spraying, comprising a painted article according to any one of claims 1 to 3 and a colour detection assembly located on the painted article.

5. The paint spraying device for paint spraying teaching according to claim 4, wherein the color detection component comprises a CCD camera, a microprocessor, a data processing component, a storage device, a clock device and an alarm device, an output end of the CCD camera is connected with an input end of the microprocessor, an output end of the microprocessor is respectively connected with input ends of the storage device, the clock device and the alarm device, and the data processing component is bidirectionally connected with the microprocessor.

6. A painting teaching method using the painting apparatus of claim 5, comprising the steps of: