CN117990008A - Sand blasting workpiece contour scanning system - Google Patents
Sand blasting workpiece contour scanning system Download PDFInfo
- Publication number
- CN117990008A CN117990008A CN202410389727.7A CN202410389727A CN117990008A CN 117990008 A CN117990008 A CN 117990008A CN 202410389727 A CN202410389727 A CN 202410389727A CN 117990008 A CN117990008 A CN 117990008A
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- Prior art keywords
- air
- scraping
- sand
- spiral
- annular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000005488 sandblasting Methods 0.000 title claims abstract description 23
- 238000002156 mixing Methods 0.000 claims abstract description 60
- 238000001816 cooling Methods 0.000 claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 238000007790 scraping Methods 0.000 claims description 196
- 239000004576 sand Substances 0.000 claims description 149
- 239000004575 stone Substances 0.000 claims description 24
- 238000001914 filtration Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 8
- 230000002776 aggregation Effects 0.000 claims description 3
- 238000004220 aggregation Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 13
- 238000005259 measurement Methods 0.000 abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 136
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 5
- 235000017491 Bambusa tulda Nutrition 0.000 description 5
- 241001330002 Bambuseae Species 0.000 description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 5
- 239000011425 bamboo Substances 0.000 description 5
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 2
- 229910052918 calcium silicate Inorganic materials 0.000 description 2
- 235000012241 calcium silicate Nutrition 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
-
- 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
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/90—Cleaning of purification apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Laser Beam Processing (AREA)
Abstract
The application relates to the field of contour scanning, and particularly discloses a sand blasting workpiece contour scanning system, which comprises a laser contour scanner; the air pressure sand-wrapping device is used for forming an annular air duct, an air inlet, a mixing chamber and an air outlet between the laser profile scanner and the workpiece to be scanned; the air heating device is arranged at the air inlet; the air cooling device is arranged at the air inlet; the external air enters the mixing chamber through the air heating inlet and the air cooling inlet respectively and is discharged outwards from the air outlet after being mixed, so that the annular air duct is formed. The application has the effect of greatly improving the measurement accuracy of the laser profile scanner in the sand blasting workshop.
Description
Technical Field
The application relates to the field of contour scanning, in particular to a sand blasting workpiece contour scanning system.
Background
The sand blasting work piece is a work piece waiting for sand blasting treatment in a sand blasting workshop, the sand blasting treatment is a work piece surface treatment process, compressed air is used as power to form a high-speed spray beam, different types of abrasive materials (such as copper ore sand, quartz sand, silicon carbide, iron sand and sea sand) are sprayed onto the work piece surface at a high speed, and through the impact and cutting action of the abrasive materials on the work piece surface, the scale and other dirt on the work piece surface are removed, and meanwhile, the cleanliness and different roughness of the work piece are improved. Before the sand blasting treatment, the outline of the workpiece to be blasted needs to be obtained, so that larger sand waste and larger man-hour waste are avoided in the sand blasting treatment process;
in the related art, the Chinese patent with the application number of CN116295089A proposes a scheme of replacing manual tape measure measurement by a line laser scanner, a scheme of improving accuracy by driving the line laser scanner to move by high-accuracy displacement equipment and a scheme of acquiring the contours of workpieces at a plurality of positions by a multi-view vision measurement system;
With respect to the related art in the above, the inventors consider that there are the following drawbacks:
When using in the sandblast workshop, the sand material can distribute in the workshop, and the sand material can influence the measurement accuracy of line laser scanner, in order to avoid sand material to influence laser measurement, above-mentioned technique provides a plurality of positions and acquires the scheme of work piece profile, but sand material is comparatively evenly distributed in the workshop, even has set up a plurality of laser scanning equipment, also can receive the influence of grit for measurement accuracy is reduced.
Disclosure of Invention
In order to solve the problem that sand and stone affect laser measurement accuracy in a sand blasting workshop, the application provides a sand blasting workpiece contour scanning system.
The application provides a sand blasting workpiece contour scanning system, which adopts the following technical scheme:
A grit blasted workpiece profile scanning system comprising: the laser profile scanner is used for acquiring the profile of the workpiece to be scanned in the sand blasting workshop; the air pressure sand-wrapping device is used for forming an annular air duct, an air inlet, a mixing chamber and an air outlet between the laser profile scanner and the workpiece to be scanned; the air heating device is arranged at the air inlet and forms an air heating inlet with part of the air inlet; the air cooling device is arranged at the air inlet and forms an air cooling inlet with part of the air inlet; the external air enters the mixing chamber through the air heating inlet and the air cooling inlet respectively and is discharged outwards from the air outlet after being mixed, so that the annular air duct is formed; the air flow rate of the annular air duct is larger than the normal air flow rate; the laser profile scanner is arranged in the middle of the ring where the ring-shaped air duct is located, and the laser profile scanner and the ring-shaped air duct repel each other.
By adopting the scheme, the annular air duct formed by the air pressure sand-wrapping device has the flow velocity larger than that of normal air, so that the air pressure at the annular air duct is smaller than the air pressure around the annular air duct, and the air around the annular air duct flows into the annular air duct; the laser profile scanner is arranged in the middle of the ring where the ring-shaped air duct is located, so that the laser emitted by the laser profile scanner passes through the part with large air pressure, a laser light path formed by the laser profile scanner and used for measuring the distance is located at the part with large air pressure, then the part with large air pressure flows towards the ring-shaped air duct with small air pressure, sand in a sand blasting workshop is driven to flow towards the ring-shaped air duct, sand on the path of the laser light path can be reduced to a certain extent, the influence of the sand on laser ranging is greatly reduced, the accuracy of the distance measurement is improved, and the principle of the laser profile scanner is based on the principle of laser ranging, so that the accuracy of the laser profile scanner is greatly improved. In addition, the annular air channel is formed by mixing air with higher temperature and air with lower temperature, the air with higher temperature and the air with lower temperature are mixed to form air, the air is in a flowing state in the mixing chamber, and then is discharged outwards through the air outlet, so that the air in the annular air channel not only has a flowing state along the extending direction of the annular air channel, but also has other flowing states, and further, the air in the annular air channel can rotate around the middle of the annular air channel in the flowing process of the extending direction of the annular air channel, sand and stone in the annular air channel can be subjected to centrifugal force by rotating around the middle of the annular air channel, and sand and stone in the annular air channel are thrown outwards, so that the sand and stone are completely far away from a laser light path, the situation that sand and stone outside the annular air channel is rolled into the annular air channel and then reaches the laser light path is avoided, and the measuring accuracy of the laser profile scanner is greatly improved.
Further, the wind pressure sand-wrapped device comprises: a housing and a blower; the shell is used for forming the air inlet and the air outlet; the fan is provided with an air inlet end and an air outlet end; the plurality of fans are arranged and distributed along the central axis of the shell in a circumferential array; extension lines of the air outlet ends of the fans are intersected with the central axis of the shell in the mixing chamber; the air outlet direction of the air outlet coincides with the length direction of the central axis of the shell; the air inlet direction of the air inlet is perpendicular to the central axis of the shell.
Through adopting above-mentioned scheme, the wind that can make many fans blow out forms the spiral air current of similar tornado, the air can be in the state of spiral flow in mixing chamber, and the fan is continuous with outside air suction in mixing chamber, thereby the pressure in the mixing chamber is continuous to increase can outwards spill over at the air outlet, thereby form high-speed spiral flow and keep away from the annular wind channel that the air outlet flows at a high speed, thereby the grit at annular wind channel middle part has been greatly improved and has been kept away from the laser light path and flow in the annular wind channel, and the outside grit in the annular wind channel flows in the annular wind channel, and the grit in the annular wind channel is outwards thrown away by the spiral flow state in annular wind channel, thereby better assurance laser light path does not have grit and laser profile scanner measuring accuracy.
Further, the shell is of a polygonal three-dimensional structure; the air inlets are arranged in a plurality, and the air inlets are all positioned at the edge of the polygonal three-dimensional structure; the number of the air inlets is matched with the number of the fans; the air inlet direction of the air inlet is the same as the air inlet direction of the air inlet end of the fan; and a mixing area is formed among the fans and is used for mixing the air at the air outlet ends of the fans to form spiral airflow.
Through adopting above-mentioned scheme, the fan can be through the relation of air intake and fan air inlet end, makes the better flow of outside air to mixing chamber in. Thereby better forming a spiral air flow, a high-speed spiral flow and an annular air duct which flows away from the air outlet at a high speed.
Further, the air outlet comprises a first annular notch and a second annular notch; the centers of the first annular notch and the second annular notch are coincident with the central axis of the shell; the annular air duct comprises a first spiral air duct and a second spiral air duct; the spiral air in the mixing chamber is discharged outwards through the first annular notch to form the first spiral air duct; the spiral air in the mixing chamber is discharged outwards through the second annular notch to form the second spiral air duct; a laser measuring channel with low sand content is formed in the first spiral air channel, and a sand discharging channel is formed between the first spiral air channel and the second spiral air channel.
Through adopting above-mentioned scheme, annular wind channel is first spiral wind channel and second spiral wind channel, forms two protections in the outside of laser light path, better throws away the grit outwards.
Further, the wind pressure sand-wrapping device also comprises a first spiral plate and a second spiral plate; a mounting region for mounting the first spiral plate and the second spiral plate is also formed in the mixing chamber; the external air sequentially passes through the air inlet, the fan, the mixing chamber, the mounting chamber and the air outlet; the first spiral plate forms a first spiral channel, and the second spiral plate forms a second spiral channel and a third spiral channel; the edge of the first spiral channel is matched with the inner edge of the first annular notch; the edge of the second spiral channel is matched with the outer edge of the first annular notch; the edge of the third spiral channel is matched with the inner edge of the second annular notch.
Through adopting above-mentioned scheme, the first spiral passageway of first spiral board and the second spiral passageway and the third spiral passageway of second spiral board, when can making the spiral air current in the mixing chamber outwards discharge from the air outlet, increase the speed of the spiral flow in first spiral wind channel through first spiral passageway and second spiral passageway, increase the speed of the spiral flow in second spiral wind channel through the third spiral passageway to improve the effect of outwards throwing away the grit, further improved laser profile scanner measuring accuracy.
Further, the sand filtering device is also included; the sand filtering device is used for forming a filtering area which prevents sand from entering the mixing chamber at the air inlet.
Further, the sand filtering device comprises a filter plate, a scraping piece and a driving piece; the filter plate is used for forming the filtering area; the filter plate is arranged at the air inlet; the scraping piece is used for scraping sand and stone on the filter plate; the driving piece is used for driving the scraping piece to move on the filter plate; the scraper includes: the first scraping part, the second scraping part and the connecting part; the connecting part is positioned between the first scraping part and the second scraping part, and the connecting part, the first scraping part and the second scraping part are made of elastic rubber and are formed uniformly and integrally; a notch, a first contact surface and a second contact surface are formed on the connecting part; a first scraping edge is formed on the first scraping part; a second scraping edge is formed on the second scraping part; the first contact surface and the second contact surface are used for contacting with the filter plate; the notch is positioned between the first contact surface and the second contact surface, and the first contact surface and the second contact surface are flush; the first scraping edge and the second scraping edge protrude outwards relative to the first contact surface.
By adopting the scheme, the filter plate prevents sand and stone from entering the mixing chamber, and prevents sand and stone from entering the fan and sand from blocking the flow speeds of the first spiral air duct and the second spiral air duct, so that the service life of the fan and the flow speeds of the first spiral air duct and the second spiral air duct are ensured; the driving piece and the scraping piece are arranged to ensure that the filter plate is not blocked, so that the permeability of the filter plate is ensured, and air can be stably sucked into the mixing chamber by the fan, so that the flow speed of the mixed air flow is further ensured;
In addition, set up the breach on the connecting portion, and connecting portion will first portion of scraping and second scrape the portion and connect, then first portion of scraping and second scrape the portion and can take place to rotate relative connecting portion, the breach on the connecting portion is in order to make first portion of scraping and second scrape portion relatively connecting portion pivoted degree increase, then can make and scrape holistic deflection increase of piece, thereby first portion of scraping and second portion of scraping can support the filter more easily and exert certain degree of pressure to the filter, then first portion of scraping and second portion of scraping increase the pressure that the filter was exerted, namely first portion of scraping and second portion of scraping the limit and all closely laminate with the filter, and apply great pressure to the filter, thereby scrape the piece and remove on the filter, first portion of scraping limit and second scrape the grit that the limit can be better with filter down.
Further, the sand filtering device also comprises a combining piece and an elastic piece; the scraping piece further comprises a mounting part; the combining piece is used for installing the installation part; the elastic piece is used for forming transmission between the combining piece and the mounting part, and enabling the mounting part, the connecting part, the first scraping part and the second scraping part to be subjected to elastic force close to the filter plate; one end of the second scraping part, which is away from the first scraping part, forms a discharging surface; one side of the filter plate, which is away from the mixing chamber, and the air inlet form an aggregation area; a guide surface is formed on the shell; the guide surface is connected with the gathering area; one end of the shell, which is away from the annular air duct, forms a sand receiving cylinder; the inner wall surface of the sand receiving cylinder is positioned outside the outer wall surface of the shell.
Through adopting above-mentioned scheme, the first portion of scraping and second are scraped not only can lean on self deformation volume and produce pressure between the filter, also can further increase the first portion of scraping and second and scrape the pressure of portion to the filter under the effect of elastic component, increase and strike off the effect of grit to the filter. Through the formation of gathering region, avoid the grit on the filter to remove the outside condition of filter to the limit portion of filter to avoid the grit to distribute in disorder, avoid first scraping the portion and the second scrape the portion when removing on the filter, the outside filter plate limit portion of grit on the filter removes the condition on the casing, thereby make the grit scraped by first scraping portion and second scraping portion easily. The guide surface is arranged so that sand is cleaned along the guide surface into the sand receiving cylinder. In addition, the first scraping part and the second scraping part move to the guide surface to enable the deformation of the first scraping part and the second scraping part to be further increased, so that the pressure applied to the guide surface by the first scraping part and the second scraping part is also greatly increased, when the first scraping part and the second scraping part are close to the sand receiving cylinder and move to be separated from the guide surface, firstly, the first scraping part and the second scraping part can suddenly lose the support and the limit of the guide surface, the first scraping part and the second scraping part with larger deformation can quickly return to the initial state, then sand adhered to the first scraping part and the second scraping part can be thrown out, and sand adhered to the first scraping part and the second scraping part can be avoided, and sand exist in the first scraping part and the second scraping part when the filter plate is scraped, so that the influence on the degree of scraping sand and sand is avoided. When the first scraping part and the second scraping part move close to the sand receiving cylinder, the first scraping part scrapes sand and stones on the filter plate; when the first scraping part and the second scraping part belite receiving cylinder move, the second scraping part scrapes sand and stones on the filter plate, then sand and stones can be adhered on the discharging surface of the second scraping part and on the second scraping edge, and when the second scraping part moves downwards and the second scraping part is separated from the guide surface, the second scraping part resets to separate sand and stones on the discharging surface from the discharging surface.
Further, the coupling member includes a moving portion and a cover portion; the moving part is connected with the driving piece, and the cover part is connected with the moving part; the cover part is made of a ductile material; the moving part is used for installing the installation part; the driving piece is used for driving the moving piece to move; when the moving part moves downwards to the position that the cover part abuts against the end face of the sand receiving cylinder, the scraping piece is positioned in the sand receiving cylinder, and the scraping piece is separated from the guide surface and the filter plate.
By adopting the proposal, the cover part is abutted with the section of the sand receiving cylinder, so that the sand receiving cylinder can be sealed, in addition, the cover part is made of ductile material, when the cover part is contacted with the sand receiving cylinder, the first scraping part and the second scraping part are abutted with the guide surface, the material receiving cylinder is sealed at the moment, then the first scraping part and the second scraping part move close to the material receiving cylinder until the first scraping part and the second scraping part are separated from the guide surface, the lid all with connect sand section of thick bamboo terminal surface butt, and the lid can take place deformation, but lid keeps with connect sand section of thick bamboo terminal surface butt to avoid scraping limit, second and unload the sand stone of material face with the adhesion when throwing away, fall down and connect the outside condition of sand section of thick bamboo, better retrieve the grit, thereby realized the purifying effect to the air that contains the grit in the sandblasting workshop.
Further, a discharging port is arranged in the sand receiving cylinder; a rotating plate is arranged at the unloading opening; the rotating plate is in threaded connection with the unloading opening.
Through rotor plate and the detachable connected mode of unloading mouth, be convenient for connect the grit in the sand receiving section of thick bamboo outwards take out and handle.
In summary, the present application includes at least one of the following beneficial technical effects:
1. The sand around the annular air duct is wrapped and moved onto the annular air duct by air pressure through the annular air duct formed by the air pressure sand wrapping device, so that a laser profile scanner is arranged in the annular middle of the annular air duct, a laser light path formed by the laser profile scanner during laser measurement is also positioned in the annular middle, the sand content in the annular middle is low or none, and the measurement accuracy of the laser profile scanner in a sand blasting workshop is greatly improved;
2. The annular air duct is provided with the air heating device and the air cooling device, so that the sand on the annular air duct is subjected to the spiral flow to generate centrifugal force, sand in the annular air duct is thrown out of the annular air duct, and the sand content in the middle of the annular air duct is greatly reduced again;
3. By arranging the plurality of fans at the positions in the mixing chamber, spiral air flow is generated in the mixing chamber, overflows outwards to form an annular air channel, the spiral flow force in the annular air channel is further increased, and the effect of throwing sand outwards is further improved;
4. The first spiral air duct and the second spiral air duct jointly form the annular air duct, so that the effect of the annular air duct on throwing out sand materials outwards and the effect of low sand content in the annular middle are further improved;
5. Through the arrangement of the sand filtering device, the sand and stone content in the mixing chamber can be reduced, and parts forming the first spiral air duct and the second spiral air duct are protected;
6. Through setting up of connecing sand section of thick bamboo and scraping piece and driving piece, can clear up and retrieve the sand material on the filter to can guarantee that the intensity in first spiral wind channel and second spiral wind channel is not influenced, also can retrieve the sand material that floats in the air in the sandblast workshop, play air purification's effect.
Drawings
FIG. 1 is an overall schematic of an embodiment according to the present application;
FIG. 2 is a schematic structural view of a portion of an embodiment, primarily showing the structure of the housing and portions of surrounding parts;
FIG. 3 is a schematic structural view of a portion of an embodiment, mainly showing the structure of the bonding member and the scraping member;
Fig. 4 is an enlarged view of a portion a of fig. 3;
FIG. 5 is a schematic structural view of a portion of an embodiment, primarily showing the configuration of the drive member and a portion of surrounding parts;
FIG. 6 is a schematic structural view of a portion of an embodiment, primarily showing the structure of the connecting rod and a portion of surrounding parts;
FIG. 7 is a schematic structural view of a portion of an embodiment, primarily illustrating the configuration of the first and second annular slots;
FIG. 8 is a schematic structural view of a portion of an embodiment, mainly showing the structure of a first spiral duct, a low sand content laser measurement channel, a sand discharge channel, and a second spiral duct;
FIG. 9 is a schematic structural view of a portion of an embodiment, mainly showing the structure of the blower, housing and filter plate;
FIG. 10 is a schematic structural view of a portion of an embodiment, primarily showing the configuration of the first spiral plate, the second spiral plate, and portions of surrounding parts;
FIG. 11 is a schematic structural view of a portion of an embodiment, primarily illustrating the cross-sectional structure of FIG. 1;
fig. 12 is an enlarged view of a portion B of fig. 11;
fig. 13 is an enlarged view of a portion C of fig. 11;
FIG. 14 is a schematic structural view of a portion of an embodiment, primarily showing the structure of FIG. 11 from another perspective;
fig. 15 is a schematic structural view of a part of the embodiment, mainly showing the structure when the first scraping portion and the second scraping portion are abutted against the guide surface;
fig. 16 is an enlarged view of a portion D of fig. 15;
fig. 17 is a schematic structural view of a part of the embodiment, mainly showing a structure in which the first scraping portion and the second scraping portion are away from the guide surface;
Fig. 18 is an enlarged view of a portion D of fig. 17;
Fig. 19 is a schematic structural view of a part of the embodiment, mainly showing the structure of the first spiral duct, the laser measuring duct with low sand content, the sand discharging duct, and the second spiral duct in the positions in fig. 11.
Reference numerals: 1. a laser profile scanner; 2. a wind pressure sand-wrapping device; 21. a first spiral duct; 22. a laser measurement channel with low sand content; 23. a sand discharge channel; 24. a second spiral duct; 25. a housing; 251. an air inlet; 252. a mixing chamber; 253. a first annular slot; 254. a second annular slot; 255. a mounting area; 256. a connecting rod; 26. a blower; 27 a first spiral plate; 271. a first helical channel; 28. a second spiral plate; 281. a second helical channel; 282. a third helical channel; 29. a guide surface; 3. an air heating device; 4. an air cooling device; 5. a sand filtering device; 51. a filter plate; 52. a scraping piece; 521. a first scraping part; 5211. a first scraping edge; 522. a second scraping part; 5221. a second scraping edge; 5222. a discharging surface; 523. a connection part; 5231. a notch; 5232. a first contact surface; 5233. a second contact surface; 524. a mounting part; 53. a driving member; 54. a bonding member; 541. a moving part; 542. a cover portion; 543. an abutting portion; 55. an elastic member; 551. a guide rod; 552. a limiting plate; 553. a spring; 6. a sand receiving cylinder; 61. a first barrel; 62. a second barrel; 63. a rotating plate; 64. trough, 65, dead lever.
Detailed Description
The application is described in further detail below with reference to fig. 1-19.
A grit blasted workpiece profile scanning system comprising: the device comprises a laser profile scanner 1, a wind pressure sand-wrapping device 2, an air heating device 3 and an air cooling device 4.
The laser profile scanner 1 is used to acquire the profile of the workpiece to be scanned in a blasting shop. The wind pressure sand-wrapping device 2 is used for forming an annular air duct, an air inlet 251, a mixing chamber 252 and an air outlet between the laser profile scanner 1 and the workpiece to be scanned. The air temperature raising device 3 is arranged at the air inlet 251 and forms an air temperature raising inlet with part of the air inlet 251. The air cooling device 4 is disposed at the air inlet 251, and forms an air cooling inlet with a part of the air inlet 251. Wherein, external air enters the mixing chamber 252 through the air heating inlet and the air cooling inlet respectively and is discharged outwards from the air outlet after being mixed, so as to form the annular air duct; the air flow rate of the annular air duct is larger than the normal air flow rate; the laser profile scanner 1 is arranged in the middle of the ring where the ring-shaped air duct is located, and the laser profile scanner 1 and the ring-shaped air duct repel each other.
In this embodiment, the wind pressure sand-wrapping device 2 adopts a bladeless fan, and the bladeless fan can blow out the annular air duct. The air heating device 3 has a water pipe to form an air heating net pipe, and hot water is introduced into the air heating net pipe, so that air enters the air inlet 251 after passing through the air heating net pipe, and the air heating inlet is the air heating net pipe, so as to heat the air entering the air inlet 251. The air cooling device 4 has a water pipe to form an air cooling net pipe, and cold water is introduced into the air cooling net pipe, so that air enters the air inlet 251 after passing through the air cooling net pipe, and the air cooling inlet is the air cooling net pipe, so that the air entering the air inlet 251 is cooled. The hot and cold water in this embodiment may be replaced by other hot and cold liquids.
Specifically, the air heating net-shaped pipeline is a pipeline which is connected end to end, hot water in the pipeline is always in a high-temperature state in a mode of arranging a pump body and a heating wire at one position, and the air cooling net-shaped pipeline is similar to the air heating net-shaped pipeline in principle and is not described in detail.
By adopting the scheme, the annular air duct formed by the air pressure sand-wrapping device 2 has the flow velocity larger than that of normal air, so that the air pressure at the annular air duct is smaller than that at the periphery of the annular air duct, and the air at the periphery of the annular air duct flows into the annular air duct; the laser profile scanner 1 is arranged in the middle of the ring where the ring-shaped air channel is located, so that the laser emitted by the laser profile scanner 1 passes through a part with large air pressure, a laser light path formed by the laser profile scanner 1 and used for measuring the distance is located at the part with large air pressure, then the part with large air pressure flows towards the ring-shaped air channel with small air pressure, sand in a sand blasting workshop is driven to flow towards the ring-shaped air channel, sand is sand for sand blasting, sand on the path of the laser light path can be reduced to a certain extent, the influence of sand on laser ranging is greatly reduced, and therefore the accuracy of distance measurement is improved, and the principle of the laser profile scanner 1 is based on the principle of laser ranging, so that the accuracy of the laser profile scanner 1 is greatly improved. In addition, the formation of the annular air channel is realized by mixing air with higher temperature and air with lower temperature, and the air with higher temperature and the air with lower temperature are mixed to form air, so that the air is in a flowing state in the mixing chamber 252, and then is discharged outwards through the air outlet, so that the air in the annular air channel not only has a flowing state along the extending direction of the annular air channel, but also has other flowing states, and further, the air in the annular air channel can rotate around the middle of the annular air channel in the flowing process of the extending direction of the annular air channel, sand and stone in the annular air channel can be subjected to centrifugal force by rotating around the middle of the annular air channel, thereby outwards throwing sand and stone in the annular air channel, further, the sand and stone are completely far away from a laser light path, and the situation that the sand and stone outside the annular air channel is wound into the annular air channel and then reaches the laser light path is avoided, and the measuring accuracy of the laser profile scanner 1 is greatly improved.
In some embodiments, the wind pressure sand-wrapped device 2 comprises: a housing 25 and a fan 26; the housing 25 is used for forming the air inlet 251 and the air outlet; the fan 26 is formed with an air inlet end and an air outlet end; a plurality of fans 26 are arranged, and the fans 26 are distributed in a circumferential array along the central axis of the shell 25; extension lines of the air outlet ends of the plurality of fans 26 intersect at the central axis of the housing 25 located in the mixing chamber 252; the air outlet direction of the air outlet coincides with the length direction of the central axis of the shell 25; the air inlet direction of the air inlet 251 is perpendicular to the central axis of the housing 25. In this embodiment, the number of fans 26 is preferably 12, and each fan 26 is stacked in a plurality along the air outlet direction, and the stacking number is preferably two depending on the height of the mixing chamber 252.
Through adopting above-mentioned scheme, the wind direction of a plurality of fans 26 is crossing, can make the wind that a plurality of fans 26 blow out form the spiral air current of similar tornado, the air can be in the state of spiral flow in mixing chamber 252, and fan 26 is continuous with outside air suction in mixing chamber 252, thereby the pressure in mixing chamber 252 is continuous to increase can outwards spill at the air outlet, thereby form high-speed spiral flow and keep away from the annular wind channel that the air outlet flows at a high speed, thereby the grit at annular wind channel middle part has been greatly improved keep away from the laser light path and flow in the annular wind channel, and the outside grit in the annular wind channel flows in the annular wind channel, and the grit in the annular wind channel is outwards thrown out by the spiral flow state in annular wind channel, thereby better assurance laser light path does not have grit and laser profile scanner 1 measuring accuracy.
Specifically, the housing 25 has a polygonal three-dimensional structure, preferably a 12-deformation three-dimensional structure; the air inlets 251 are arranged in a plurality, and the air inlets 251 are all positioned at the edge of the polygonal three-dimensional structure; the number of air inlets 251 is matched with the number of fans 26, wherein the number of air inlets 251 is matched with the number of groups of fans 26, namely the number of air inlets 251 is 12; the air inlet direction of the air inlet 251 is the same as the air inlet direction of the air inlet end of the fan 26; a mixing area is formed between the fans 26, and the mixing area is used for mixing air at the air outlet ends of the fans 26 to form a spiral airflow.
By adopting the above scheme, the fan 26 can enable the external air to better flow into the mixing chamber 252 through the relationship between the air inlet 251 and the air inlet end of the fan 26. Thereby better forming a spiral air flow, a high-speed spiral flow and an annular air duct which flows away from the air outlet at a high speed.
Specifically, the air outlet includes a first annular slot 253 and a second annular slot 254; the centers of the first annular notch 253 and the second annular notch 254 are coincident with the central axis of the housing 25; the annular air duct comprises a first spiral air duct 21 and a second spiral air duct 24; the spiral air in the mixing chamber 252 is discharged outwards through the first annular notch 253 to form the first spiral air duct 21; the spiral air in the mixing chamber 252 is discharged through the second annular slot 254 to form the second spiral duct 24; a laser measuring channel 22 with low sand content is formed in the first spiral air channel 21, and a sand discharging channel 23 is formed between the first spiral air channel 21 and the second spiral air channel 24. In this embodiment, the first annular notch 253 and the second annular notch 254 are both annular, and a connecting rod 256 is provided in the annular notch, and the connecting rod 256 is used to form an annular notch in one plate when the annular notch is opened.
Specifically, the wind pressure sand-wrapping device 2 further comprises a first spiral plate 27 and a second spiral plate 28; the mixing chamber 252 also has formed therein a mounting area 255 for mounting the first spiral plate 27 and the second spiral plate 28; external air passes through the air inlet 251, the fan 26, the mixing chamber 252, the installation chamber and the air outlet in sequence; the first spiral plate 63 forms a first spiral channel 271, and the second spiral plate 28 forms a second spiral channel 281 and a third spiral channel 282; the edge of the first spiral channel 271 mates with the inner edge of the first annular slot 253; the edge of the second spiral channel 281 mates with the outer edge of the first annular slot 253; the edge of the third helical channel 282 mates with the inner edge of the second annular slot 254. The first spiral plate 27 and the second spiral plate 28 are each fixed to the inner wall surface of the installation chamber.
By adopting the above scheme, when the spiral air flow in the mixing chamber 252 is discharged from the air outlet outwards through the first spiral channel 271 and the second spiral channel 281 and the third spiral channel 282 of the first spiral plate 27 and the second spiral channel 281 of the second spiral plate 28, the spiral flow speed of the first spiral air channel 21 is increased through the first spiral channel 271 and the second spiral channel 281, and the spiral flow speed of the second spiral air channel 24 is increased through the third spiral channel 282, so that the effect of throwing sand outwards is improved, and the measuring accuracy of the laser profile scanner 1 is further improved.
Specifically, the sandblasting workpiece contour scanning system further comprises a sand filtering device 5; the sand filter 5 is used to form a filtering area at the air inlet 251 that prevents sand from entering the mixing chamber 252. In this embodiment, the sand filtering device 5 is a screen.
In other embodiments, the sand filter device 5 comprises a filter plate 51, a scraper 52 and a driver 53; the filter plate 51 is used to form the filter area; a plurality of filter plates 51 are arranged, and the filter plates 51 are arranged at the air inlet 251; the scraping piece 52 is used for scraping sand and stone on the filter plate 51; the driving piece 53 is used for driving the scraping piece 52 to move on the filter plate 51; in this embodiment, the driving member 53 is an electric push rod, and the electric push rod drives the scraping member 52 to move on the filter plate 51.
The scraper 52 includes: a first scraping portion 521, a second scraping portion 522, and a connecting portion 523. The first scraping part 521, the second scraping part 522 and the connecting part 523 are all in block structures, the connecting part 523 is positioned between the first scraping part 521 and the second scraping part 522, and the connecting part 523, the first scraping part 521 and the second scraping part 522 are all made of elastic rubber and are uniformly molded; the connecting portion 523 is formed with a notch 5231, a first contact surface 5232 and a second contact surface 5233; the first scraping edge 5211 is formed on the first scraping portion 521; a second scraping edge 5221 is formed on the second scraping portion 522; the first contact surface 5232 and the second contact surface 5233 are for contacting the filter plate 51; the notch 5231 is located between the first contact surface 5232 and the second contact surface 5233, and the first contact surface 5232 and the second contact surface 5233 are flush; the first scraping edge 5211 and the second scraping edge 5221 protrude outward relative to the first contact surface 5232.
By adopting the above scheme, the filter plate 51 prevents sand from entering the mixing chamber 252, prevents sand from entering the fan 26 and prevents sand from obstructing the flow speeds of the first spiral duct 21 and the second spiral duct 24, thereby ensuring the service life of the fan 26 and the flow speeds of the first spiral duct 21 and the second spiral duct 24; the arrangement of the driving piece 53 and the scraping piece 52 ensures that the filter plate 51 is not blocked, thereby ensuring the permeability of the filter plate 51, ensuring that air can be stably sucked into the mixing chamber 252 by the fan 26, and further ensuring the flow speed of the mixed air flow;
In addition, the notch 5231 is formed on the connecting portion 523, and the connecting portion 523 connects the first scraping portion 521 and the second scraping portion 522, so that the first scraping portion 521 and the second scraping portion 522 can rotate relative to the connecting portion 523, the notch 5231 on the connecting portion 523 is used for enabling the rotation degree of the first scraping portion 521 and the second scraping portion 522 relative to the connecting portion 523 to be increased, the deformation of the whole scraping member 52 is increased, the first scraping portion 521 and the second scraping portion 522 can be more easily abutted against the filter plate 51 and exert a certain degree of pressure on the filter plate 51, the pressure exerted by the first scraping portion 521 and the second scraping portion 522 on the filter plate 51 is increased, that is, the first scraping edge 5211 of the first scraping portion 521 and the second scraping edge 5221 of the second scraping portion 522 are tightly attached to the filter plate 51, and a larger pressure is exerted on the filter plate 51, so that when the scraping member 52 moves on the filter plate 51, the first scraping edge 5211 and the second scraping edge 5221 can be better scraped off sand and gravel on the filter plate 51.
Specifically, the sand filtering device 5 further includes a combining member 54 and an elastic member 55; the scraper 52 further includes a mounting portion 524, where the mounting portion 524 is a block; the coupling 54 is used for mounting the mounting portion 524, and preferably the mounting portion 524 is indirectly mounted on the coupling 54; the elastic member 55 is configured to form a transmission between the coupling member 54 and the mounting portion 524, and to subject the mounting portion 524, the connecting portion 523, the first scraping portion 521, and the second scraping portion 522 to an elastic force near the filter plate 51; one end of the second scraping portion 522, which faces away from the first scraping portion 521, forms a discharging surface 5222; the side of the filter plate 51 facing away from the mixing chamber 252 forms a collecting area with the air inlet 251; a guide surface 29 is formed on the housing 25; the guide surface 29 is connected to the accumulation area; one end of the shell 25, which is away from the annular air duct, forms a sand receiving cylinder; the inner wall surface of the sand receiving cylinder is positioned outside the outer wall surface of the shell 25.
The coupler 54 is a 12-sided rod, and the housing 25 is located inside the coupler 54. The elastic member 55 includes a guide bar 551, a limiting plate 552, and a spring 553. The guide bar 551 is connected with the combining piece 54 in a sliding way, the installation part 524 is fixed with the guide bar 551, the spring 553 is positioned between the combining piece 54 and the installation part 524, the limiting plate 552 is fixed with the guide bar 551, and the limiting plate 552 is positioned at one end of the combining piece 54, which is far away from the spring 553.
By adopting the above-described configuration, the first scraping portion 521 and the second scraping portion 522 can generate pressure with the filter plate 51 by their own deformation amount, and the pressure of the first scraping portion 521 and the second scraping portion 522 on the filter plate 51 can be further increased by the elastic member 55, so that the effect of scraping sand and stone off the filter plate 51 can be increased. By forming the aggregation area, sand on the filter plate 51 is prevented from moving to the side of the filter plate 51 to the outside of the filter plate 51, thereby preventing the sand from being distributed in disorder, and preventing sand on the filter from moving to the side of the filter plate 51 to the casing 25 when the first scraping part 521 and the second scraping part 522 move on the filter plate 51, thereby enabling the sand to be easily scraped by the first scraping part 521 and the second scraping part 522. The guide surface 29 is arranged so that sand is cleaned along the guide surface 29 into the sand receiving cylinder 6. In addition, when the first scraping part 521 and the second scraping part 522 move to the guide surface 29, the deformation amount of the first scraping part 521 and the second scraping part 522 is further increased, so that the pressure exerted by the first scraping part 521 and the second scraping part 522 on the guide surface 29 is also greatly increased, and when the first scraping part 521 and the second scraping part 522 close to the sand receiving cylinder 6 move to be separated from the guide surface 29, firstly, the first scraping part 521 and the second scraping part 522 suddenly lose the support and the limit of the guide surface 29, the first scraping part 521 and the second scraping part 522 with larger deformation amounts quickly return to the initial state, and then sand adhered on the first scraping part 521 and the second scraping part 522 is thrown out, so that the sand and the sand adhered on the first scraping part 521 and the second scraping part 522 are avoided, and the influence on the degree of scraping sand and sand is avoided due to the existence of the first scraping part 521 and the second scraping part 522. When the first scraping part 521 and the second scraping part 522 move close to the sand receiving cylinder 6, the first scraping part 521 scrapes sand from the filter plate 51; when the first scraping part 521 and the second scraping part 522 are moved by the belite receiving cylinder 6, the second scraping part 522 scrapes off the sand and stones on the filter plate 51, so that the sand and stones adhere to the discharge surface 5222 of the second scraping part 522 and the second scraping edge 5221, and when the second scraping part 522 moves downwards and the second scraping part 522 is separated from the guide surface 29, the sand and stones on the discharge surface 5222 are separated from the discharge surface 5222 by the reset of the second scraping part 522.
Specifically, the coupling member 54 includes a moving portion 541 and a cover portion 542; the moving portion 541 is a 12-sided rod, the cover portion 542 is a circular plate extending outward from the 12-sided rod, the moving portion 541 extends inward to form an abutting portion 543 of a rigid material, and the abutting portion 543 is adapted to abut against the mounting portion 524 and bear the force of the mounting portion 524. A moving portion 541, the moving portion 541 being connected to the driving tool 53, the cover portion 542 being connected to the moving portion 541; the cover 542 is a ductile material; the moving part 541 is used for mounting the mounting part 524; the driving piece 53 is used for driving the moving piece to move; when the moving portion 541 moves downward to the position where the cover portion 542 abuts against the end surface of the sand receiving cylinder 6, the scraping member 52 is located in the sand receiving cylinder 6, and the scraping member 52 is separated from the guide surface 29 and the filter plate 51.
By adopting the above-mentioned scheme, lid 542 and the section butt of connecing sand section 6 can seal the butt sand section 6, in addition lid 542 is the ductile material, then when lid 542 and connecing sand section 6 contact, first scraper 521 and second scraper 522 all support with guide surface 29, connect the feed cylinder to be sealed this moment, then first scraper 521 and second scraper 522 are close to connecing the feed cylinder and move, until first scraper 521 and second scraper 522 break away from guide surface 29, lid 542 all supports with connecing sand section 6 terminal surface, and lid 542 can take place deformation, but lid 542 remains and connects sand section 6 terminal surface butt, thereby avoid when first scraper 5211, second scraper 5221 and unloading face 5222 are thrown out the grit of adhesion, fall down and connect the outside condition of sand section 6, the better retrieve the grit, thereby realized the purification effect to the grit that contains the air in the sandblast workshop.
Specifically, a discharge port is arranged in the sand receiving cylinder 6; a rotating plate 63 is arranged at the unloading port; the rotary plate 63 is screwed to the discharge port. The sand receiving cylinder 6 is fixed to the housing 25 by a plurality of fixing rods 65. The bottom surface of the sand receiving cylinder 6 is an inclined surface, the sand receiving cylinder 6 comprises a first cylinder 61 and a second cylinder 62, the first cylinder 61 and the second cylinder 62 are in threaded connection, and a trough 64 is formed in the rotating plate 63.
The sand in the sand receiving cylinder 6 is conveniently taken out and treated by the detachable connection mode of the rotary plate 63 and the unloading port.
The implementation principle of the sandblasting workpiece contour scanning system provided by the embodiment of the application is as follows: the sand receiving cylinder 6 is moved by fixing the sand receiving cylinder 6 to the mechanical arm, thereby realizing the position movement of the laser profile scanner 1.
In use, the fans 26 are operated simultaneously so that outside air is discharged outwardly from the first annular slot 253 and the second annular slot 254 to form an annular air duct after passing through the filter plate 51, the mixing chamber 252 and the mounting chamber;
At intervals, the driving piece 53 drives the scraping piece 52 to move downwards until the first scraping part 521 and the second scraping part 522 are separated from the guide surface 29 and completely positioned in the sand receiving cylinder 6 to stop, and then the driving piece 53 drives the scraping piece 52 to move upwards to reset.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (10)
1. A sandblasted workpiece contour scanning system, comprising:
The laser profile scanner is used for acquiring the profile of the workpiece to be scanned in the sand blasting workshop;
The air pressure sand-wrapping device is used for forming an annular air duct, an air inlet, a mixing chamber and an air outlet between the laser profile scanner and the workpiece to be scanned;
the air heating device is arranged at the air inlet and forms an air heating inlet with part of the air inlet;
the air cooling device is arranged at the air inlet and forms an air cooling inlet with part of the air inlet;
The external air enters the mixing chamber through the air heating inlet and the air cooling inlet respectively and is discharged outwards from the air outlet after being mixed, so that the annular air duct is formed;
the air flow rate of the annular air duct is larger than the normal air flow rate; the laser profile scanner is arranged in the middle of the ring where the ring-shaped air duct is located, and the laser profile scanner and the ring-shaped air duct repel each other.
2. A grit blasted workpiece profile scanning system as in claim 1, wherein:
The sand device is wrapped up in to wind pressure includes: a housing and a blower;
the shell is used for forming the air inlet and the air outlet;
the fan is provided with an air inlet end and an air outlet end;
the plurality of fans are arranged and distributed along the central axis of the shell in a circumferential array;
extension lines of the air outlet ends of the fans are intersected with the central axis of the shell in the mixing chamber;
The air outlet direction of the air outlet coincides with the length direction of the central axis of the shell; the air inlet direction of the air inlet is perpendicular to the central axis of the shell.
3. A grit blasted workpiece profile scanning system as in claim 2, wherein:
The shell is of a polygonal three-dimensional structure;
the air inlets are arranged in a plurality, and the air inlets are all positioned at the edge of the polygonal three-dimensional structure;
The number of the air inlets is matched with the number of the fans; the air inlet direction of the air inlet is the same as the air inlet direction of the air inlet end of the fan;
And a mixing area is formed among the fans and is used for mixing the air at the air outlet ends of the fans to form spiral airflow.
4. A grit blasted workpiece profile scanning system as in claim 3, wherein:
the air outlet comprises a first annular notch and a second annular notch;
the centers of the first annular notch and the second annular notch are coincident with the central axis of the shell;
the annular air duct comprises a first spiral air duct and a second spiral air duct;
the spiral air in the mixing chamber is discharged outwards through the first annular notch to form the first spiral air duct;
The spiral air in the mixing chamber is discharged outwards through the second annular notch to form the second spiral air duct;
A laser measuring channel with low sand content is formed in the first spiral air channel, and a sand discharging channel is formed between the first spiral air channel and the second spiral air channel.
5. A grit blasted workpiece profile scanning system as in claim 4, wherein:
The wind pressure sand-wrapping device further comprises a first spiral plate and a second spiral plate;
a mounting region for mounting the first spiral plate and the second spiral plate is also formed in the mixing chamber;
The external air sequentially passes through the air inlet, the fan, the mixing chamber, the mounting chamber and the air outlet;
The first spiral plate forms a first spiral channel, and the second spiral plate forms a second spiral channel and a third spiral channel;
The edge of the first spiral channel is matched with the inner edge of the first annular notch; the edge of the second spiral channel is matched with the outer edge of the first annular notch; the edge of the third spiral channel is matched with the inner edge of the second annular notch.
6. A grit blasted workpiece profile scanning system as in any one of claims 1-5, wherein:
the sand filtering device is also included; the sand filtering device is used for forming a filtering area which prevents sand from entering the mixing chamber at the air inlet.
7. A grit blasted workpiece profile scanning system as in claim 6, wherein:
the sand filtering device comprises a filter plate, a scraping piece and a driving piece;
The filter plate is used for forming the filtering area; the filter plate is arranged at the air inlet;
The scraping piece is used for scraping sand and stone on the filter plate; the driving piece is used for driving the scraping piece to move on the filter plate;
The scraper includes: the first scraping part, the second scraping part and the connecting part; the connecting part is positioned between the first scraping part and the second scraping part, and the connecting part, the first scraping part and the second scraping part are made of elastic rubber and are formed uniformly and integrally;
A notch, a first contact surface and a second contact surface are formed on the connecting part; a first scraping edge is formed on the first scraping part; a second scraping edge is formed on the second scraping part; the first contact surface and the second contact surface are used for contacting with the filter plate; the notch is positioned between the first contact surface and the second contact surface, and the first contact surface and the second contact surface are flush;
The first scraping edge and the second scraping edge protrude outwards relative to the first contact surface.
8. A grit blasted workpiece profile scanning system as in claim 7, wherein:
The sand filtering device also comprises a combining piece and an elastic piece; the scraping piece further comprises a mounting part; the combining piece is used for installing the installation part;
the elastic piece is used for forming transmission between the combining piece and the mounting part, and enabling the mounting part, the connecting part, the first scraping part and the second scraping part to be subjected to elastic force close to the filter plate;
One end of the second scraping part, which is away from the first scraping part, forms a discharging surface; one side of the filter plate, which is away from the mixing chamber, and the air inlet form an aggregation area; a guide surface is formed on the shell; the guide surface is connected with the gathering area;
One end of the shell, which is away from the annular air duct, forms a sand receiving cylinder; the inner wall surface of the sand receiving cylinder is positioned outside the outer wall surface of the shell.
9. A grit blasted workpiece profile scanning system as in claim 8, wherein:
the combining piece comprises a moving part and a cover part;
the moving part is connected with the driving piece, and the cover part is connected with the moving part; the cover part is made of a ductile material; the moving part is used for installing the installation part;
the driving piece is used for driving the moving piece to move;
When the moving part moves downwards to the position that the cover part abuts against the end face of the sand receiving cylinder, the scraping piece is positioned in the sand receiving cylinder, and the scraping piece is separated from the guide surface and the filter plate.
10. A grit blasted workpiece profile scanning system as in claim 9, wherein:
A discharge port is arranged in the sand receiving cylinder; a rotating plate is arranged at the unloading opening; the rotating plate is in threaded connection with the unloading opening.
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