CN112517312A - Device for automatically generating surface whitening and random speckles of tested piece in DIC technology - Google Patents
Device for automatically generating surface whitening and random speckles of tested piece in DIC technology Download PDFInfo
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- CN112517312A CN112517312A CN202011306069.9A CN202011306069A CN112517312A CN 112517312 A CN112517312 A CN 112517312A CN 202011306069 A CN202011306069 A CN 202011306069A CN 112517312 A CN112517312 A CN 112517312A
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- 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
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/02—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to separate articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0278—Arrangement or mounting of spray heads
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- 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
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
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- 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
- B05C13/00—Means for manipulating or holding work, e.g. for separate articles
- B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
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- 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
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/12—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation being performed after the application
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- 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
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
- B05D3/0413—Heating with air
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
Abstract
The invention discloses an automatic generating device for whitening the surface of a tested piece and generating random speckles in DIC technology, which comprises the following parts: a whitening chamber, a drying chamber and a random light spot preparation chamber. The method is convenient to operate and use, can greatly improve the efficiency of random light spot preparation work in the DIC technology, and ensures the quality.
Description
Technical Field
The invention relates to the technical field of deformation detection, in particular to an automatic generation device for surface whitening and random speckle of a tested piece based on DIC technology. When DIC test is carried out in a laboratory, in order to improve the measurement precision and effect, paint or whitening agent is often brushed on the surface of a sample to be tested, and random speckles are printed on the surface of the sample to be tested.
Background
DIC is a short term for digital photogrammetry technology and is widely used in rock mechanics tests at present. The accuracy of the DIC measurement technique is very closely related to the quality of the speckle pattern, which directly affects the contrast of the image and thus the accuracy of the measurement. At present, the most common preparation method of random speckles in laboratories is to brush white a sample to be tested with white paint or whitening agent, dry the sample, manually brush ink on a speckle board, and then roll the tested piece uniformly and slowly to obtain the required random light spots. The manual operation method is long in time consumption, the surface of a test piece is inconvenient to paint or whiten, the quality of light spot manufacture cannot be effectively guaranteed, the method is influenced by various human factors such as parallelism and stress conditions when the test piece rolls every time, and the efficiency is low.
Disclosure of Invention
In order to solve the problems existing in the background technology, the random light spot is made more quickly, efficient and standard operation is achieved, and the quality of the random light spot is guaranteed. The device for whitening the surface of the tested piece and quickly and automatically generating the random speckles in the DIC technology is simple and reasonable in structural design and convenient to operate and use, can solve the problems of inconvenience in painting of the test piece, low preparation speed of the random speckles, low efficiency and the like in the DIC technology, can greatly improve the efficiency of quick and convenient painting of the surface of the test piece and preparation work of the random speckles in the DIC technology in a laboratory, reduces the cost, and has important application prospect and practical significance.
In order to solve the technical problems, the invention adopts the following technical scheme:
an automatic generation device for whitening the surface of a tested piece and randomly generating speckles in DIC technology comprises a whitening chamber, a drying chamber and a random light spot preparation chamber.
The whitening chamber mainly comprises a coating storage, a first upper fixing disc, a coating brush, a fixing disc, a first transmission shaft and a first power machine; the fixed disc is used for fixing a test piece and is arranged on a conveyor belt, the first transmission shaft is arranged below the conveyor belt and driven by the first power machine to lift up and down, the fixed disc is provided with a positioning clamping groove matched with the first transmission shaft, the first upper fixed disc is arranged right above the first transmission shaft, the paint brush comprises a contact rod and a spring, when the first transmission shaft rotates at a constant speed, the contact rod is pressed, the spring contracts, paint flows into the paint brush through the reserved hole and permeates the painting layer of the paint brush, so that the paint or a whitening agent is continuously brushed on the surface of the test piece and the paint brush, when the contact rod is not pressed, the spring restores the original state, and the piston blocks the paint from flowing into the paint brush and permeates the painting layer of the paint brush; after being uniformly coated, the coating is conveyed to a drying chamber through a conveying belt for drying;
the drying chamber mainly comprises a second upper fixing disc, a second transmission shaft, a second power machine, air extraction equipment, an air extraction device, a hot air blower and a heat insulation layer; the second transmission shaft is arranged below the conveyor belt and driven by the second power machine to rotate to lift up and down, the second upper fixing disc is arranged right above the second transmission shaft, and when the second power machine drives the test piece to slowly rotate at a constant speed; the hot air blower works to generate hot air to dry the test piece through the air exhaust device; starting an air extraction device to accelerate the flow of hot air and the evaporation of water, and conveying the dried test piece to a random light spot preparation chamber through a conveyor belt for dotting;
the random light spot preparation chamber mainly comprises a third upper fixed disc, a third transmission shaft, an ink storage, a test piece control shaft, a seal ring, a transmission pinch roller and a third power machine; the third transmission shaft is arranged below the conveyor belt and driven by the third power machine to rotate and lift up and down, the third upper fixing disc is arranged right above the third transmission shaft, and ink in the ink storage device is filled on the raised scattered spots through the seal ring; the transmission pinch roller can freely stretch out and draw back, is arranged on the test piece control shaft and is used for continuously adjusting the distance and the compaction degree between the test piece and the seal ring;
after the test piece is conveyed to the position above a transmission shaft of the random light spot preparation chamber through the conveyor belt, the transmission shaft automatically rises to be fully contacted with a positioning clamping groove of the fixed disk, and the fixed disk on the upper part of the test piece is fully contacted and pressed; the ink in the ink storage device is filled on the raised scattered spots through the seal ring; the transmission pinch roller can freely stretch out and draw back, constantly adjusts the distance between test piece and the seal ring and compresses tightly the degree.
As an optimal technical scheme, the test piece control shaft starts to rotate slowly at a constant speed, and simultaneously, the small wheel of the transmission pinch roller starts to rotate, so that the rotating speed of the test piece control shaft is the same as the rotating speed of the test piece.
As preferred technical scheme, the seal ring includes seal ring body, speckle feeler lever, spring, and when rotating, speckle feeler lever pressurized back, spring pressurized shrink, printing ink is through outer glib talker and interior glib talker, fully contacts with speckle feeler lever, accomplishes and beats the point, and when speckle feeler lever did not receive the power, the spring reconversion, outer glib talker and interior glib phase separation, the piston blocks printing ink entering and speckle feeler lever contact.
As a preferred technical scheme, the speckle feeler lever is made of sponge.
As an optimized technical scheme, the device for conveniently increasing the surface of the test piece and quickly and automatically generating the random speckles is divided into an upper part and a lower part, wherein the upper part is an operation space, and the lower part is a control space.
As a preferred technical scheme, a whitening chamber is positioned at the leftmost side, and a tested sample is coated with a whitening agent or white paint; the drying chamber is arranged in the middle and is used for quickly drying the whitened test piece; and the random light spot preparation chamber is positioned at the rightmost side and is used for beating black random light spots on the surface of the dried test piece according to experimental requirements.
The device comprises a test piece, a conveyor belt, a whitening chamber, a drying chamber, a random light spot preparation chamber, a movable door, a controller and a controller, wherein the conveyor belt is used for controlling the test piece to move among the whitening chamber, the drying chamber and the random light spot preparation chamber and the start or stop of each work, and the movable door among the whitening chamber, the drying chamber and the random light spot preparation chamber is opened and closed.
Compared with the prior art, the invention has the beneficial effects that:
the device for quickly and automatically generating the whitening on the surface of the tested piece and the random speckles in the DIC technology has the advantages of simple and reasonable structural design and convenient operation and use, can solve the problems of whitening on the surface of the tested piece and inconvenient preparation of the random speckles in the DIC technology in a laboratory, can greatly improve the whitening on the surface of the tested piece and the preparation efficiency of the random speckles when being applied to the measurement of the DIC technology in the laboratory, effectively ensures the quality, has relatively low cost and long service life, can be repeatedly used, has important application prospect and practical significance, and is suitable for popularization and use.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a general layout diagram of a device for rapid and automatic generation of convenient surface whitening and random speckles for a tested piece in DIC technology of the present invention;
FIG. 2 is a schematic view of a transmission shaft of a device for rapidly and automatically generating random speckles and convenient augmentation of the surface of a tested piece in DIC technology;
FIG. 3 is a large drawing of a fixed disk of the device for rapid and automatic generation of convenient surface whitening and random speckles of a tested piece according to DIC technique of the present invention;
FIG. 4 is a schematic view of a paint brush of the device for rapidly and automatically generating random speckles and conveniently increasing the surface of a tested piece in DIC technology;
FIG. 5 is a schematic view of the internal structure of a paint brush of a device for rapidly and automatically generating random speckles and conveniently increasing the surface of a tested piece in DIC technology;
FIG. 6 is a schematic view of the internal structure of a seal ring of the device for rapidly and automatically generating random speckles and conveniently increasing the surface of a tested piece in DIC technology.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments 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.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The invention will now be further described with reference to the accompanying drawings.
Example (b):
as shown in fig. 1 to 6, the device for conveniently whitening the surface of a tested piece and quickly and automatically generating random speckles in the DIC technology comprises a whitening chamber a, a drying chamber B and a random light spot preparation chamber C.
The device for conveniently increasing the surface of the test piece and quickly and automatically generating the random speckles is divided into an upper part and a lower part, wherein the upper part is an operation space, and the lower part is a control space. The whitening chamber A is positioned at the leftmost side, and the tested sample is coated with a whitening agent or white paint; the drying chamber B rapidly dries the whitened test piece; and (4) printing black random light spots on the surface of the dried test piece according to the experimental requirements by the random light spot preparation room C.
The raw material whitening chamber A of the device for quickly and automatically whitening the surface of the tested piece and quickly generating the random speckles in the DIC technology consists of a coating storage 1, a first upper fixed disc 2, a coating brush 3, a fixed disc 5, a first transmission shaft 6 and a first power machine 7; after the test piece 4 is placed on the fixed disc 5 and conveyed above the transmission shaft 6 through the conveyor belt 10, the transmission shaft automatically rises to be fully contacted with the positioning clamping groove 502 of the fixed disc 5, and the fixed disc 2 on the upper portion of the test piece 4 is fully contacted and compressed. The two arms of the paint brush 3 are controlled by the telescopic control device 304 to realize automatic retraction, so that the paint brush 3 is fully contacted with the test piece 4; referring to fig. 4 and 5, the paint brush 3 includes a brush body 301, when the transmission shaft 6 rotates at a constant speed, the feeler lever 303 is pressed, the spring 307 contracts, paint flows into the preformed hole 308 and permeates the painting layer 302 of the paint brush 3, so that the surface of the test piece 4 and the paint brush 3 are continuously painted or whitened, when the feeler lever 303 is not pressed, the spring 307 returns to the original state, and the piston 304 blocks the paint from flowing into and permeating the painting layer 302 of the paint brush 3; after being uniformly coated, the coating is conveyed to a drying chamber B through a conveying belt 10 for drying.
The drying chamber B of the device for quickly and automatically increasing the surface of the tested piece and quickly generating the random speckles in the DIC technology consists of a second upper fixed disc 21, a second transmission shaft 22, a second power machine 23, an air extraction device 11, an air extraction device 12, a hot air blower 13 and a heat insulation layer 16. After the test piece 4 is conveyed to the position above the second transmission shaft 22 of the drying chamber B through the conveyor belt 10, the second transmission shaft 22 automatically rises to be in full contact with the positioning clamping groove 502 of the fixed disc 5, and the test piece 4 is made to be in full contact with and tightly pressed against the second upper fixed disc 21. The second power machine 23 drives the test piece 4 to slowly rotate at a constant speed; the hot air blower 13 works to generate hot air to dry the test piece 4 through the air extractor 12; the air extraction device 11 is started to accelerate the flow of hot air and the evaporation of water, and the drying effect is improved. And conveying the dried test piece 4 to a random light spot preparation chamber C through a conveying belt 10 for dotting.
The random light spot preparation chamber C of the device for quickly and automatically increasing the surface of the tested piece and quickly generating the random speckles in the DIC technology consists of a third upper fixed disc 24, a third transmission shaft 25, an ink storage 14, a test piece control shaft 15, a seal ring 17, a transmission pressing wheel 18 and a third power machine 26; after the test piece 4 is conveyed to the position above a third transmission shaft 25 of the random light spot preparation chamber C through the conveyor belt 10, the third transmission shaft 25 automatically rises to be fully contacted with a positioning clamping groove of the fixed disc 5, and the fixed disc 2 on the upper part of the test piece 4 is fully contacted and pressed; the ink in the ink reservoir 14 passes through the seal ring 17 and fills the raised speckles; the transmission pinch roller 18 can freely stretch and retract, and the distance and the compaction degree between the test piece 4 and the seal ring 17 are continuously adjusted; after the contact between test piece 4 and seal ring 17 meets the requirements, test piece control shaft 16 begins the rotation at the uniform velocity slowly, simultaneously, the steamboat of transmission pinch roller 18 begins to rotate for test piece control shaft 16 pivoted speed is the same with test piece 4 self pivoted speed, seal ring 17 includes seal ring body 1701, and when rotating, speckle feeler lever 1703 raw and other materials are the sponge, presses the back, and spring 1709 is the compression shrink, and printing ink passes through outer glib talker 1706 and interior glib talker 1710, fully contacts with speckle feeler lever 1703, accomplishes and beats the point, when speckle feeler lever 1703 does not receive the stress, spring 1709 reconversion, outer glib talker and interior glib talker 1710 phase separation, and piston 1707 blocks the printing ink and gets into and speckle feeler lever 1703 contact. And rotating for 2-3 circles.
The conveyor belt 10 and the controller 8 of the device for quickly and automatically whitening the surface of the tested piece and quickly generating the random speckles in the DIC technology are mainly used for controlling the movement of the tested piece 4 among the whitening chamber A, the drying chamber B and the random spot preparation chamber C and the start or stop of each work, and simultaneously controlling the opening and closing of a movable door (20) among the whitening chamber A, the drying chamber B and the random spot preparation chamber C.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (7)
1. An automatic generation device for whitening the surface of a tested piece and randomly generating speckles in DIC technology is characterized by comprising a whitening chamber (A), a drying chamber (B) and a random light spot preparation chamber (C);
the whitening chamber (A) mainly comprises a coating storage (1), a first upper fixed disc (2), a coating brush (3), a fixed disc (5), a first transmission shaft (6) and a first power machine (7); the fixed disc (5) is used for fixing a test piece (4) and is arranged on a conveyor belt (10), the first transmission shaft (6) is arranged below the conveyor belt (10), the first transmission shaft (6) is driven by the first power machine (7) to lift up and down, the fixed disc (5) is provided with a positioning clamping groove (502) matched with the first transmission shaft (6), the first upper fixed disc (2) is arranged right above the first transmission shaft (6), the paint brush (3) comprises a contact rod (303) and a spring (307), when the first transmission shaft (6) rotates at a constant speed, the contact rod (303) is pressed, the spring (307) contracts, paint is gushed into the paint through a preformed hole (308) and soaked in a paint coating layer (302) of the brush paint (3), so that the surface of the test piece (4) and the paint brush (3) are continuously brushed with paint or whitening agent, and when the contact rod (303) is not pressed, the spring (307) is restored, the piston (304) blocks the paint from flowing in and soaks the paint brush layer (302) of the paint brush (3); after being uniformly coated, the coating is conveyed to a drying chamber (B) through a conveying belt (10) for drying;
the drying chamber (B) mainly comprises a second upper fixed disc (21), a second transmission shaft (22), a second power machine (23), air extraction equipment (11), an air extraction device (12), a hot air blower (13) and a heat insulation layer (16); the second transmission shaft (22) is arranged below the conveyor belt (10), the second transmission shaft (22) is driven by the second power machine (23) to rotate to lift up and down, the second upper fixing disc (21) is arranged right above the second transmission shaft (22), and when the second power machine (23) drives the test piece (4) to slowly rotate at a constant speed; the hot air blower (13) works to generate hot air to dry the test piece (4) through the air extractor (12); starting an air extraction device (11), accelerating the flow of hot air and the evaporation of moisture, and conveying the dried test piece (4) to a random light spot preparation chamber (C) through a conveying belt (10) for dotting;
the random light spot preparation chamber (C) mainly comprises a third upper fixed disc (24), a third transmission shaft (25), an ink storage (14), a test piece control shaft (15), a seal ring (17), a transmission pressing wheel (18) and a third power machine (27); the third transmission shaft (25) is arranged below the conveyor belt (10), the third transmission shaft (25) is driven by the third power machine (27) to rotate and lift up and down, the third upper fixing disc (24) is arranged right above the third transmission shaft (22), and ink in the ink storage device (15) is filled on the raised scattered spots through the seal ring (17); the transmission pinch roller (18) can freely stretch out and draw back and is arranged on the test piece control shaft (15) and used for continuously adjusting the distance between the test piece (4) and the seal ring (17) and the compaction degree
After the test piece (4) is conveyed to the position above a transmission shaft (6) of the random light spot preparation chamber (C) through a conveyor belt (10), the transmission shaft (6) automatically rises to be fully contacted with a positioning clamping groove of a fixed disc (5), and a fixed disc (2) on the upper part of the test piece (4) is fully contacted and pressed; the ink in the ink storage device (15) passes through the seal ring (17) and fills the raised scattered spots; the transmission pinch roller (18) can freely extend and retract, and the distance and the compaction degree between the test piece (4) and the seal ring (17) are continuously adjusted.
2. The device for automatically generating the whitening and random speckle on the surface of the tested piece in the DIC technology according to claim 1, wherein the test piece control shaft (16) starts to rotate slowly at a constant speed, and the small wheel of the transmission pinch roller (18) starts to rotate at the same time, so that the test piece control shaft (16) rotates at the same speed as the test piece (4) rotates.
3. The device for automatically generating the whitening and random speckles on the surface of the tested piece in the DIC technology according to claim 2, wherein the stamp ring (17) comprises a stamp ring body (1701), a speckle contact bar (1703) and a spring (1709), when the stamp ring (17) rotates, the speckle contact bar (1703) is pressed, the spring (1709) is pressed to shrink, ink passes through an outer oil nozzle (1706) and an inner oil nozzle (1710) and is fully contacted with the speckle contact bar (1703), dotting is completed, when the speckle contact bar (1703) is not stressed, the spring (1709) restores to the original state, the outer oil nozzle (1706) is separated from the inner oil nozzle (1710), and the piston (1707) blocks the ink from contacting the speckle contact bar (1703).
4. The device for automatically generating the whitening and random speckles on the surface of the tested piece in the DIC technology of claim 3, wherein the speckle feeler lever (1703) is made of sponge.
5. The device for automatically generating whitening and random speckles on the surface of a tested piece in DIC of claim 1, wherein the device for automatically generating whitening and random speckles on the surface of a tested piece is divided into an upper part and a lower part, the upper part is an operation space, and the lower part is a control space.
6. The device for automatically generating the whitening and random speckle pattern on the surface of the tested piece in the DIC technology of claim 1, wherein the whitening chamber (A) is located at the leftmost side and is used for painting a whitening agent or a white paint on the tested sample; the drying chamber (B) is arranged in the middle and is used for quickly drying the whitened test piece; and the random light spot preparation chamber (C) is positioned at the rightmost side and is used for printing black random light spots on the surface of the dried test piece according to the experimental requirements.
7. The device for automatically generating the whitening and random speckle on the surface of the tested piece in the DIC technology according to claim 1, further comprising a controller (8), wherein the controller (8) controls the conveyor belt (10) to control the movement of the tested piece (4) among the whitening chamber (A), the drying chamber (B) and the random spot preparation chamber (C) and the start or stop of each work, and controls the opening and closing of the movable door (20) among the whitening chamber (A), the drying chamber (B) and the random spot preparation chamber (C).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011306069.9A CN112517312B (en) | 2020-11-20 | 2020-11-20 | Device for automatically generating surface whitening and random speckles of tested piece in DIC technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011306069.9A CN112517312B (en) | 2020-11-20 | 2020-11-20 | Device for automatically generating surface whitening and random speckles of tested piece in DIC technology |
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| CN112517312A true CN112517312A (en) | 2021-03-19 |
| CN112517312B CN112517312B (en) | 2021-11-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113188453A (en) * | 2021-04-30 | 2021-07-30 | 东北电力大学 | Speckle generating device for film structure non-contact displacement and strain measurement |
| CN114322811A (en) * | 2021-12-17 | 2022-04-12 | 深圳市海塞姆科技有限公司 | Standard speckle spraying device and standard speckle spraying method |
Citations (8)
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| CN112517312B (en) | 2021-11-26 |
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