CN212964676U - Opaque bottle bottom shooting equipment and corresponding detection equipment - Google Patents

Opaque bottle bottom shooting equipment and corresponding detection equipment Download PDF

Info

Publication number
CN212964676U
CN212964676U CN202022327514.1U CN202022327514U CN212964676U CN 212964676 U CN212964676 U CN 212964676U CN 202022327514 U CN202022327514 U CN 202022327514U CN 212964676 U CN212964676 U CN 212964676U
Authority
CN
China
Prior art keywords
bottle
light source
conveying belt
industrial camera
wine bottle
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.)
Active
Application number
CN202022327514.1U
Other languages
Chinese (zh)
Inventor
乔健
田立勋
罗邦毅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Xianjian Technology Co ltd
Original Assignee
Beijing Xianjian Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing Xianjian Technology Co ltd filed Critical Beijing Xianjian Technology Co ltd
Priority to CN202022327514.1U priority Critical patent/CN212964676U/en
Application granted granted Critical
Publication of CN212964676U publication Critical patent/CN212964676U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

The utility model provides an equipment and corresponding check out test set are shot to opaque bottle bottom. The shooting equipment comprises a conveying device, a wine bottle supporting piece (2) and an industrial camera (34); the conveying device comprises a first conveying belt, a second conveying belt and a flat light source (20), the first conveying belt and the second conveying belt are arranged in parallel, a gap with a preset width is reserved between the first conveying belt and the second conveying belt, the wine bottle support piece (2) is fixed on the first conveying belt and the second conveying belt, a bottom exposing through hole (21) is formed in the bottom of the wine bottle support piece, the flat light source (20) is arranged below the first conveying belt and the second conveying belt and irradiates upwards to the gap, and the industrial camera (34) shoots the bottle mouth of the target bottle body. The utility model discloses can solve the problem that prior art opaque bottle bottom is difficult for observing and detecting, for the production manufacturer provides automatic bottom of bottle image shooting and even standardized detection, promote enterprise production efficiency's improvement.

Description

Opaque bottle bottom shooting equipment and corresponding detection equipment
The technical field is as follows:
the utility model relates to a bottle automatic check out test set technical field, concretely relates to opaque bottle bottom shoots equipment and corresponding check out test set.
Background art:
wine bottles are mostly glass or ceramic products and are generally opaque; in the actual production process of wine bottles, some wine bottles often have bottle bottom cracks in a batch of finished wine bottles, and then the wine bottles with the bottle bottom cracks need to be screened out; at present, the crack detection of the bottle bottom of an opaque wine bottle completely depends on manual work, a plurality of staff visually detect the appearance of the bottle bottom of the wine bottle, and then judge whether the inside of the bottle bottom has cracks or not by knocking the bottle bottom and listening by a plurality of professionals; this kind of artifical visual detection and the mode of knocking and smelling the sound detection combination, not only the cost of labor is high, and detection efficiency is low moreover, and every staff is different to the subjective consciousness that opaque beverage bottle bottom crack detected, causes the beverage bottle detection quality discrepancy, often appears lou examining, causes the dew wine phenomenon that appears after the beverage bottle splendid attire wine that the bottle bottom crack appears in the use.
In addition to wine bottles, there are other bottles in industrial production, also opaque bottles, which are also subject to the shooting or detection of flaws or cracks in the interior of the bottle, especially in the bottom of the bottle. However, none of the prior art devices are conveniently used for detecting the bottom of a bottle.
The invention content is as follows:
the utility model aims at providing an opaque bottle shoots equipment and corresponding check out test set and is difficult for observing and the problem that detects in order to solve present opaque bottle (for example beverage bottle) bottle end, solves artifical observation inefficiency, and time is with high costs, and individual subjective factor leads to beverage bottle detection quality to differ, leaks to examine the many scheduling problems of number of times, for the producer provides automatic standardized bottle bottom image and shoots and detect, promotes the improvement of enterprise production efficiency.
If the shooting equipment is used independently, the pictures shot by the shooting equipment can be transmitted to a computer, a plurality of pictures are displayed on a computer screen at the same time, and unqualified products are manually selected. If be equipped with image detection device, then can directly carry out the detection at the bottom of the bottle, the technical personnel in the field should understand, the utility model discloses an improve the transmission and the shooting mode that lie in to opaque bottle body bottle bottom, image detection device can adopt prior art.
The utility model discloses technical scheme as follows:
a bottle bottom image shooting device for an opaque bottle body comprises a conveying device, a wine bottle supporting piece and an industrial camera; the conveying device comprises a first conveying belt, a second conveying belt and a flat light source, the first conveying belt and the second conveying belt are arranged in parallel, a gap with a preset width is reserved between the first conveying belt and the second conveying belt, the width of the gap is smaller than that of the wine bottle supporting piece, the wine bottle supporting piece is fixed on the first conveying belt and the second conveying belt, bottom exposed through holes are formed in the bottom of the wine bottle supporting piece, the flat light source is arranged below the first conveying belt and the second conveying belt and faces the gap to irradiate upwards, the industrial camera is arranged above the conveying device through an industrial camera adjusting support and faces the bottle mouth of the target bottle body.
Further, conveyer is the synchronous gear belt line body, it includes the supporting leg, produce the line curb plate, the curb plate dead lever, including a motor, an end cap, a controller, and a cover plate, the gear, gear belt and dull and stereotyped light source, two are produced the relative installation of line curb plate, curb plate dead lever fixed connection is between two production line curb plates, the supporting leg is installed in the both ends outside of producing the line curb plate, two gear shafts are installed at the both ends of producing the line curb plate, the gear is installed respectively at the both ends of every gear shaft, install the gear belt between two relative gears, dull and stereotyped light source is located and is produced line.
Preferably, the wine bottle support is hollow and cylindrical, the size of the bottom exposed through hole is smaller than that of the bottom of the target bottle body, and the plurality of wine bottle supports are arranged on the conveying device at equal intervals.
Further, still include photoelectric sensor, photoelectric sensor installs the front end that gets into dull and stereotyped light source region at the target bottle, photoelectric sensor triggers based on its and dull and stereotyped light source distance dull and stereotyped light source throws light on, and triggers the industry camera is shot.
Further, the synchronous gear belt line body also comprises a cover plate and a flat light source supporting plate; a side groove is arranged on the side plate of the production line; the flat light source supporting plate is arranged in the middle between the two production line side plates and is positioned in the middle of the gear belt; the front side edge of the flat light source supporting plate is connected with the bottom edge of the side groove, and the left side edge and the right side edge of the flat light source supporting plate are tilted upwards; the flat light source is inserted and installed on the flat light source supporting plate; the cover plate can close the side groove.
Preferably, the wine bottle holder is made of hard material, such as POM.
Further, industry camera adjust the support including adjusting support mounting base, steelframe, industry camera regulating part and industry camera, adjust support mounting base fixed mounting in the bottom of steelframe, industry camera regulating part installs on steelframe upper portion, industry camera is installed on industry camera, the position of the adjustable industry camera of industry camera regulating part.
Further, the bottle bottom detection device for the opaque bottle body comprises a bottle bottom image shooting device for the opaque bottle body and an image detection device, wherein the image detection device is in communication connection with an industrial camera of the bottle bottom image shooting device and is used for detecting the bottle bottom based on the image.
By adopting the technical scheme, the utility model discloses a better realization its invention purpose, the utility model discloses an image shooting and check out test set adopts beverage bottle holder to hold up opaque beverage bottle, makes it be in on the dull and stereotyped light source, and the industry camera lens is in directly over opaque beverage bottle and takes a picture to opaque beverage bottle inside, and the photo is qualified through image detection device judgement; the arranged gear belt drives the wine bottle supporting piece to move at a constant speed, so that the wine bottle sequentially passes through the flat light source and the industrial camera lens to take a picture; the photoelectric sensor arranged on the belt line body of the synchronous gear can delay the time until the wine bottle dragging piece moves to the center of the flat light source, trigger the flat light source to flash and trigger the industrial camera to take a picture; the industrial camera adjusting support can conveniently adjust the upper position, the lower position, the front position, the rear position and the left position of the industrial camera, so that the lens of the industrial camera can be always adjusted to be positioned right above a wine bottle.
Description of the drawings:
fig. 1 is a top view of the overall structure of the present invention.
Fig. 2 is a schematic structural diagram of the belt line body 1 of the middle synchronizing gear of the present invention.
Fig. 3 is a schematic view of the installation structure of the flat light source 20 on the flat light source supporting plate 19 according to the present invention.
Fig. 4 is a schematic view of the installation structure of the flat light source 20 on the flat light source supporting plate 19 according to the present invention.
Fig. 5 is a schematic structural view of the wine bottle holder 2 of the present invention.
Fig. 6 is a schematic structural diagram of the industrial camera adjusting bracket 3 according to the present invention.
Fig. 7 is a schematic view of the optical scheme of the present invention for detecting cracks at the bottom of a bottle.
The reference numerals are illustrated in the following table.
Number of mark Name of label Number of mark Name of label
1 Synchronous gear belt line body 1 19 Flat light source supporting plate 19
11 Support leg 11 20 Flat light source 20
12 Production line side plate 12 2 Wine bottle holder 2
121 Side groove 121 21 Exposed bottom through hole 21
13 Side plate fixing rod 13 3 Industrial camera adjusting bracket 3
14 Electric machine 14 31 Adjusting bracket mounting base 31
15 Gear shaft 15 32 Steel frame 32
16 Gear 16 33 Industrial camera adjusting section 33
17 Gear belt 17 34 Industrial camera 34
18 Cover plate 18 4 Photoelectric sensor 4
The specific implementation mode is as follows:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative effort, and the contents of the invention will be further described below with reference to the drawings:
example 1:
the utility model discloses an equipment is shot to bottom of bottle image of opaque bottle body includes conveyer, beverage bottle hold in the palm 2 and industry camera 34.
Referring to fig. 2, in this embodiment, the transmission device adopts a synchronous gear belt body 1, which includes a supporting leg 11, a side plate 12, a side plate fixing rod 13, a motor 14, a gear shaft 15, a gear 16, a gear belt 17 and a flat light source 20, wherein the two side plates 12 are installed oppositely, the side plate fixing rod 13 is fixedly connected between the two side plates 12, the supporting leg 11 is installed outside two ends of the side plate 12, the two gear shafts 15 are installed at two ends of the side plate 12, the gear 16 is installed at two ends of each gear shaft 15, the gear belt 17 is installed between the two opposite gears 16, the flat light source 20 is located in the middle of the side plate 12, and the flat light source 20 is located in the middle of the.
Referring to fig. 5, the bottle holders 2 are hollow cylindrical, the size of the bottom-exposed through holes 21 is smaller than the size of the bottom of the target bottle, and the bottle holders 2 are equidistantly disposed on the conveyor.
Referring to fig. 6, the industrial camera adjusting bracket 3 includes an adjusting bracket mounting base 31, a steel frame 32, an industrial camera adjusting portion 33 and an industrial camera 34, the adjusting bracket mounting base 31 is fixedly mounted at the bottom of the steel frame 32, the industrial camera adjusting portion 33 is mounted at the upper portion of the steel frame 32, the industrial camera 34 is mounted on the industrial camera adjusting portion 33 of the industrial camera adjusting bracket 3, and the industrial camera adjusting portion 33 can adjust the vertical, horizontal, front and rear positions of the industrial camera 34, so that the industrial camera 34 is always located at the top of the bottle mouth of the target bottle body. The industrial camera adjusting bracket 3 may adopt the existing implementation manner and may also adopt the implementation manner in the present embodiment.
In a preferred embodiment, an image detection device may be added to the bottle bottom image capturing device to form a bottle bottom detection device for the opaque bottle, and the image detection device is in communication connection with an industrial camera of the bottle bottom image capturing device and is used for performing bottle bottom detection based on the image.
It should be noted that: referring to fig. 5, the bottle holder 2 is made of a hard material such as POM; the wine bottle support 2 is integrally provided with a certain height, so that a wine bottle arranged in the wine bottle support is prevented from shaking and even falling when the gear belt 17 drives the wine bottle support; the specification size of the bottom exposed through hole 21 is smaller than that of the bottom of the wine bottle, after the wine bottle is loaded, the edge of the bottom of the wine bottle props against the edge of the bottom exposed through hole 21, and most of the area of the bottom of the wine bottle, for example more than 90%, can be exposed from the bottom exposed through hole 21; it should be noted that, although the drawings show a wine bottle with a circular bottom, it is conceivable that when the bottom of the wine bottle is in other shapes, the corresponding wine bottle holder 2 should be made into a shape matching with the bottom of the wine bottle, but the crack detection effect of the wine bottle holder is not affected.
In a preferred mode, referring to fig. 2, 3 and 4, the synchronous gear belt body 1 further includes a cover plate 18 and a flat light source supporting plate 19; a side groove 121 is arranged on the production line side plate 12; the flat light source supporting plate 19 is arranged in the middle between the two production line side plates 12 and is positioned in the middle of the gear belt 17; the front side edge of the flat light source supporting plate 19 is connected with the bottom edge of the side groove 121, and the left side edge and the right side edge of the flat light source supporting plate 19 are tilted upwards; the flat light source 20 is inserted and installed on the flat light source supporting plate 19; the side groove 121 can be closed at the cover plate 18; the flat light source 20 is mounted on the flat light source supporting plate 19 through the side groove 121, and the cover plate 18 can facilitate the maintenance and replacement of the flat light source 20.
The use method of the opaque wine bottle bottom crack detection device in the embodiment comprises the following steps: the synchronous gear belt line body 1 and the industrial camera adjusting support 3 are fixedly installed on the horizontal ground or a table board through the supporting legs 11 and the adjusting support installing base 31 respectively, the front, the back, the left, the right, the upper and the lower positions of the industrial camera 34 are adjusted through the industrial camera adjusting portion 33, so that the industrial camera 34 is located right above a bottle opening of a wine bottle loaded in the wine bottle dragging piece 2, the motor 14 is started, the gear belt 14 drives the wine bottle dragging piece 2 loaded with the wine bottle to move at a constant speed, referring to the attached drawing 7, when the opaque wine bottle moves to the flat light source 20, and a lens of the industrial camera 34 is located right above the bottle opening of the opaque wine bottle, the lens of the industrial camera 34 shoots, and the shot picture is judged to be a qualified product through.
The image detection device may employ a conventional machine vision-based image comparison module or other detection device.
Example 2:
based on the embodiment 1 and the attached drawing 1, the opaque wine bottle bottom crack detection device further includes a photoelectric sensor 4, the photoelectric sensor 4 is installed at the front end of the region where the target bottle body enters the flat light source 20, and the photoelectric sensor 4 triggers the flat light source 20 to illuminate based on the distance between the target bottle body and the flat light source 20, and triggers the industrial camera 34 to take a picture. Although the wine bottle is opaque, cracks or other flaws can be clearly imaged through the bottom of the bottle under illumination light or intense light. Therefore, the bottle body applied in the utility model is a bottle body which can reflect the flaws under the illumination, but not a metal or other bottle bodies which can not transmit light completely.
The use method of the opaque wine bottle bottom crack detection device in the embodiment comprises the following steps: the synchronous gear belt line body 1 and the industrial camera adjusting bracket 3 are respectively fixedly arranged on a horizontal ground or a table board through a supporting leg 11 and an adjusting bracket mounting base 31, the front, back, left, right, upper and lower positions of the industrial camera 34 are adjusted through an industrial camera adjusting part 33, so that the industrial camera 34 is positioned right above a wine bottle mouth loaded in the wine bottle dragging part 2, a motor 14 is started, the gear belt 14 drives the wine bottle dragging part 2 loaded with wine bottles to move at a constant speed, at the moment, the flat light source 20 is not bright, when the wine bottle dragging part 2 loaded with wine bottles moves to an induction area of the photoelectric sensor 4, referring to an attached figure 7, the photoelectric sensor 4 can delay until the wine bottle dragging part 2 moves to the center of the flat light source 20 (the delay time can be set by a worker according to the running speed of the gear belt 14 and the distance between the center of the flat light source 20 and the photoelectric sensor 4, at the moment, the lens of the industrial camera 34 is positioned right above the mouth of the opaque wine bottle, the flat light source 20 is triggered to flash, the industrial camera 34 is triggered to take a picture, and the shot picture is judged to be a qualified product through the image detection device.
It is apparent that those skilled in the art can make modifications and/or additions of parts to the bottom detection apparatus for opaque bottles and the bottom image photographing apparatus for opaque bottles and the corresponding method described above without departing from the field and scope of the present invention.
It is also clear that, although the present invention has been described in detail with reference to the bottom imaging and detection device for opaque bottles, a person skilled in the art shall certainly be able to achieve many other equivalent forms and methods for the bottom detection device for opaque bottles and for the bottom image imaging device for opaque bottles, all of which shall come within the field of protection of the present invention.

Claims (8)

1. The utility model provides an equipment is shot to bottle end image of opaque bottle which characterized in that: comprises a conveying device, a wine bottle supporting piece (2) and an industrial camera (34); the conveying device comprises a first conveying belt, a second conveying belt and a flat light source (20), the first conveying belt and the second conveying belt are arranged in parallel, a gap with a preset width is reserved between the first conveying belt and the second conveying belt, the width of the gap is smaller than that of the wine bottle supporting piece (2), the wine bottle supporting piece (2) is fixed on the first conveying belt and the second conveying belt, a bottom exposing through hole (21) is formed in the bottom of the wine bottle supporting piece, the flat light source (20) is arranged below the first conveying belt and the second conveying belt and faces the gap to irradiate upwards, and an industrial camera (34) is arranged above the conveying device through an industrial camera adjusting support (3) and faces the bottle mouth of a bottle body vertically constrained on the wine bottle supporting piece (2) to be shot.
2. The apparatus of claim 1, wherein the image capture device comprises: conveyer is synchronous gear belted line body (1), it includes supporting leg (11), produces line curb plate (12), curb plate dead lever (13), motor (14), gear shaft (15), gear (16), gear belt (17) and dull and stereotyped light source (20), two are produced line curb plate (12) and install relatively, curb plate dead lever (13) fixed connection is between two are produced line curb plate (12), supporting leg (11) are installed in the both ends outside of producing line curb plate (12), two gear shafts (15) are installed at the both ends of producing line curb plate (12), gear (16) are installed respectively at the both ends of every gear shaft (15), install gear belt (17) between two relative gears (16), line curb plate (12) middle part is produced in dull and stereotyped light source (20), dull and stereotyped light source (20) are in the middle part of gear belt (17).
3. The apparatus of claim 1, wherein the image capture device comprises: the wine bottle support pieces (2) are hollow cylindrical, the size of the bottom exposed through holes (21) at the bottoms of the wine bottle support pieces is smaller than that of the bottoms of the target bottle bodies, and the wine bottle support pieces (2) are arranged on the conveying device at equal intervals.
4. The apparatus of claim 1, wherein the image capture device comprises: still include photoelectric sensor (4), photoelectric sensor (4) are installed and are being got into at the target bottle the regional front end of dull and stereotyped light source (20), photoelectric sensor (4) based on it with dull and stereotyped light source (20) distance triggers dull and stereotyped light source (20) throw light on, and trigger industry camera (34) are taken a picture.
5. The apparatus of claim 2, wherein the image capture device comprises: the synchronous gear belt line body (1) also comprises a cover plate (18) and a flat light source supporting plate (19); a side groove (121) is arranged on the production line side plate (12); the flat light source supporting plate (19) is arranged in the middle between the two production line side plates (12) and is positioned in the middle of the gear belt (17); the front side edge of the flat light source supporting plate (19) is connected with the bottom edge of the side groove (121), and the left side edge and the right side edge of the flat light source supporting plate (19) are tilted upwards; the flat light source (20) is inserted and installed on the flat light source supporting plate (19); the cover plate (18) can seal the side groove (121).
6. The apparatus of claim 4, wherein the image capture device comprises: the wine bottle support piece (2) is made of hard materials.
7. The apparatus of claim 1, wherein the image capture device comprises: industrial camera adjust support (3) including adjusting support mounting base (31), steelframe (32), industrial camera regulating part (33) and industrial camera (34), adjust support mounting base (31) fixed mounting in the bottom of steelframe (32), industrial camera regulating part (33) are installed on steelframe (32) upper portion, industrial camera (34) are installed on industrial camera regulating part (33), the position of industrial camera (34) can be adjusted in industrial camera regulating part (33).
8. A bottom detection apparatus for opaque bottles, characterized in that the bottom crack detection apparatus comprises the bottom image capturing apparatus for opaque bottles of any of claims 1 to 7 and an image detection device, the image detection device being communicatively connected to the industrial camera of the bottom image capturing apparatus for bottom detection based on the image.
CN202022327514.1U 2020-10-19 2020-10-19 Opaque bottle bottom shooting equipment and corresponding detection equipment Active CN212964676U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022327514.1U CN212964676U (en) 2020-10-19 2020-10-19 Opaque bottle bottom shooting equipment and corresponding detection equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022327514.1U CN212964676U (en) 2020-10-19 2020-10-19 Opaque bottle bottom shooting equipment and corresponding detection equipment

Publications (1)

Publication Number Publication Date
CN212964676U true CN212964676U (en) 2021-04-13

Family

ID=75372128

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022327514.1U Active CN212964676U (en) 2020-10-19 2020-10-19 Opaque bottle bottom shooting equipment and corresponding detection equipment

Country Status (1)

Country Link
CN (1) CN212964676U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113189120A (en) * 2021-05-31 2021-07-30 吉林大学 Glass oral liquid bottle defect detection system
CN115711886A (en) * 2021-08-23 2023-02-24 苏州西斯派克智能装备有限公司 Detection system and detection method for tray

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113189120A (en) * 2021-05-31 2021-07-30 吉林大学 Glass oral liquid bottle defect detection system
CN115711886A (en) * 2021-08-23 2023-02-24 苏州西斯派克智能装备有限公司 Detection system and detection method for tray

Similar Documents

Publication Publication Date Title
CN212964676U (en) Opaque bottle bottom shooting equipment and corresponding detection equipment
CN208043682U (en) A kind of leaded light board defect Automatic Visual Inspection device
CN111804601B (en) Full-automatic machine part vision flaw detection equipment and method
CN111992512B (en) Intelligence steel band visual detection equipment
CN209736110U (en) CCD visual detection equipment
CN113145497A (en) Surface defect detection device based on machine vision
KR102026684B1 (en) Vision inspector of hourglass worm
CN110412044A (en) A kind of dysnusia identification scanner and its application method
CN111458345A (en) Visual detection mechanism for defects of mask
CN105057229A (en) Spraying surface defect detector
CN214749840U (en) Visual detection device based on 2D surveys and 3D measures
CN105973900A (en) Defect detection system and detection method for solar cell component
CN109596633A (en) Light guide plate defect detection equipment and detection method
CN108226160A (en) A kind of visual detection equipment of auto parts and components
CN210243520U (en) Self-adjusting artificial board double-sided visual detection device
CN210401240U (en) Dynamic vision testing device capable of being adjusted at multiple angles
CN212514327U (en) Glass quality detection device
CN218823857U (en) Automatic change visual detection equipment that discernment detected in succession
CN211122573U (en) Ceramic tile unfilled corner detection equipment
CN208795666U (en) A kind of light guide plate high quality graphic acquisition device
CN111006585A (en) Continuous feeding type full-automatic testing machine
CN220295258U (en) Sealing washer check out test set
CN204996732U (en) Spraying surface defect detection machine
CN208334208U (en) A kind of visual detection equipment of auto parts and components
CN109507195A (en) A kind of plate-type heat exchanger slab crackle imaging system

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant