Financial document intelligent processing system and device based on multi-wavelength optical fold identification
阅读说明:本技术 基于多波长光学褶皱识别的金融凭证智能处理系统及其装置 (Financial document intelligent processing system and device based on multi-wavelength optical fold identification ) 是由 张晗 康建龙 王迎威 李晓如 郑春艳 李超 其他发明人请求不公开姓名 于 2020-04-28 设计创作,主要内容包括:本发明公开了一种基于多波长光学褶皱识别的金融凭证智能处理系统及其装置,包括金融凭证平整组件、金融凭证存放组件、对齐粘贴组件以及图像识别模块;所述图像识别模块中的LED灯阵发出单侧光线,使褶皱背光一侧产生阴影,基于灰度阈值对金融凭证图片进行灰度处理和比较,自动识别出褶皱金融凭证,然后通过平整辗辊组件将褶皱整平,整平后的褶皱金融凭证通过所述金融凭证存放组件独立存放在金融凭证存放平台上;最后通过金融凭证放置平台对金融凭证进行定位,并通过翻转和升降动作,将金融凭证扣压至规整盒内,使除首张金融凭证以外的金融凭证在金融凭证放置平台的扣压作用力下粘贴在前一张金融凭证的涂胶部上,实现金融凭证的定位粘贴。(The invention discloses a financial document intelligent processing system and device based on multi-wavelength optical wrinkle recognition, comprising a financial document leveling component, a financial document storage component, an alignment pasting component and an image recognition module; the LED lamp array in the image recognition module emits single-side light to enable one side of a fold backlight to generate a shadow, the financial document picture is subjected to gray level processing and comparison based on a gray level threshold value, the fold financial document is automatically recognized, then the fold is leveled through a leveling roller assembly, and the leveled fold financial document is independently stored on a financial document storage platform through a financial document storage assembly; and finally, positioning the financial voucher through the financial voucher placing platform, and buckling and pressing the financial voucher into the regular box through turning and lifting actions, so that the financial vouchers except the first financial voucher are stuck to the glue coating part of the previous financial voucher under the buckling and pressing action force of the financial voucher placing platform, and the positioning and sticking of the financial voucher are realized.)
1. The intelligent processing device of the financial document is characterized by comprising a financial document flattening component, a financial document storage component and an alignment pasting component;
the financial document leveling assembly comprises a financial document placing platform, a financial document adsorption adjusting part and a leveling roller assembly; the financial voucher placing platform is arranged in a lifting and overturning manner, transverse moving rollers and longitudinal moving rollers are uniformly embedded in the table top in a staggered manner, and a plurality of negative pressure adsorption ports are uniformly distributed among the moving rollers at intervals; the financial voucher adsorption adjusting component is arranged right above the financial voucher placing platform and at least comprises a rotating component, a telescopic component and an adsorption component, the steering end of the rotating component can rotate clockwise to one side of the leveling roller assembly and anticlockwise to one side of the financial voucher transfer guide rail around a horizontal axis, the fixed end of the telescopic component is fixedly connected with the steering end of the rotating component, and the adsorption component is fixedly arranged at the movable end of the telescopic component; the leveling roller assembly is arranged on one side of the financial document placing platform and comprises two roller groups which are arranged up and down symmetrically, and surface contact is formed between the two roller groups;
the financial document storage assembly comprises a folded financial document storage assembly and a flattened financial document storage assembly, and the folded financial document storage assembly comprises a financial document transfer guide rail, a financial document transfer seat and a financial document storage platform; the financial voucher transfer guide rail is vertically arranged on one side of the financial voucher placing platform, the financial voucher transfer seat is movably sleeved on the financial voucher transfer guide rail, and a financial voucher storing platform is arranged at the stroke end point of the financial voucher transfer guide rail; the flat financial document storage assembly comprises a lead-in part and a classification box, the lead-in part is arranged at an output port of the conveying roller assembly, and an input port of the classification box is arranged opposite to a lead-out port of the lead-in part;
the alignment pasting assembly comprises a regular box and a gluing part, the regular box and the financial document placing platform are arranged up and down oppositely, a three-dimensional moving guide rail is erected above the regular box, and the gluing part is arranged at the vertical telescopic free end of the three-dimensional moving guide rail.
2. The intelligent financial document processing apparatus according to claim 1, wherein all of the movable rollers partially protrude from the platform and have the same height.
3. The intelligent financial document processing apparatus according to claim 1, wherein the financial document adsorption adjustment member includes a first rotating member, a second rotating member, a third rotating member, a fourth rotating member, a first telescopic member, and a first adsorption member; the first rotating member is capable of self-axis rotation about a vertical axis; the second rotating component is provided with a plane base, the center of the plane base is vertically extended upwards to form a rotating hinged end part, and the rotating hinged end is hinged with the first rotating component and can rotate clockwise around a horizontal axis to one side of the leveling and rolling roller assembly and anticlockwise to one side of the financial voucher transfer guide rail; one end of the third rotating part rotates around a base axis which is perpendicular to the plane base, and the other end of the third rotating part is hinged with the fourth rotating part; the fourth rotating component comprises a first subsection and a second subsection which are arranged perpendicular to each other, the free end of the first subsection is hinged with the other end of the third rotating component and can rotate around the axis of the base, and the second subsection extends along the axis of the base and is provided with a first guide rail which is arranged in parallel with the axis of the base; the fifth telescopic component comprises a lifting rod which is sleeved on the first guide rail in a sliding mode through a sliding block, and the first adsorption component is fixedly arranged at the lower end of the lifting rod.
4. The financial document intelligent processing device according to claim 1, wherein the leveling roller assembly comprises two roller sets which are oppositely arranged up and down, each roller set at least comprises a set of rolling conveyor belt, a roller shaft of each rolling conveyor belt is arranged in parallel relative to a side edge of the leveling roller assembly corresponding to the financial document placing platform, and the conveying direction of each rolling conveyor belt is perpendicular to the length extending direction of the roller shaft.
5. The intelligent financial document processing device according to claim 4, wherein one of the two rolling groups comprises two sets of rolling conveyor belts arranged in parallel in the horizontal direction, a second adsorption part is arranged between the two rolling conveyor belts, and an adsorption port of the second adsorption part is arranged towards one side of the financial document placing platform.
6. The intelligent financial document processing device according to claim 1, wherein a horizontal guide groove is formed in a side of the financial document transfer seat opposite to the financial document placement platform, at least one third suction part is arranged in the horizontal guide groove, the third suction part has an independent sliding driving part capable of freely sliding along a rail, a plurality of suction ports and horizontal guide grooves are uniformly distributed on the financial document storage platform, and when the financial document transfer seat moves to a stroke end point of the financial document transfer guide rail, the horizontal guide groove on the financial document transfer seat is butted with the horizontal guide groove on the financial document storage platform.
7. The intelligent financial document processing device according to claim 6, wherein the horizontal guide groove of the financial document transfer seat and the horizontal guide groove of the financial document storage platform are provided with air pump slide rails arranged in parallel with each other inside, the third suction unit is movably sleeved on the air pump slide rails through a slider, and when the financial document transfer seat moves to the stroke end of the financial document transfer guide rails, the air pump slide rails on the financial document transfer seat are in butt joint with the air pump slide rails on the financial document storage platform.
8. The intelligent financial document processing device according to claim 1, wherein the flat financial document storage assembly further comprises an endless conveyor belt, the sorting boxes are fixedly arranged on the endless conveyor belt, and when the sorting boxes are driven by the endless conveyor belt to rotate to the output ports of the conveying rollers, the input ports of the sorting boxes are arranged opposite to the output ports of the guiding members.
9. An intelligent financial voucher processing system based on multi-wavelength optical wrinkle identification is characterized by comprising the intelligent financial voucher processing device and an image identification module, wherein the image identification module comprises a light emitting unit, a picture acquisition unit, a position identification unit, a gray level conversion unit and a gray level judgment unit, the light emitting unit comprises an ambient light source, and the ambient light source is an LED lamp array arranged on one side of a financial voucher placing platform; the image acquisition unit is arranged above the financial document placing platform and used for acquiring images of financial documents on the financial document placing platform, the position identification unit is used for identifying the position of the financial document according to a pre-stored shape and size and in combination with a three-dimensional coordinate system, the gray scale conversion unit is used for converting the acquired image into a gray scale image in a gray scale mode, the gray scale judgment unit is used for comparing the pixel gray scale value of the gray scale image according to a set gray scale threshold value, and whether the financial document has wrinkles or not is judged according to the judgment condition that the pixel gray scale value of the wrinkle position is higher than the set gray scale threshold value.
10. An intelligent processing system for financial instruments based on multi-wavelength optical wrinkle identification as claimed in claim 9, wherein said light emitting unit further comprises a background light source arranged in the direction of the light source, said background light source being arranged on a horizontal adjustment arm.
Technical Field
The invention relates to a material arranging technology, in particular to a financial voucher intelligent processing system and device based on multi-wavelength optical fold identification.
Background
Along with the development of economy, more and more enterprises and administrative units have more frequent financial circulation, so that office supplies are rapidly developed, wherein the arrangement work of materials can spend a large amount of time and energy of workers, particularly the financial voucher posting work in financial management, each company can relate to a large amount of financial voucher posting work every month, the financial voucher posting flow is relatively more complicated for standardizing the management of a financial posting system, the financial voucher posting process is more complicated, and the financial voucher automatic arrangement machine is correspondingly developed for overcoming the problems, so that the automatic integration and posting work of financial vouchers is realized, and the posting efficiency is improved; however, the existing financial document automatic collator has the following problems:
1) because the financial documents are made of paper materials, wrinkles are difficult to avoid in the storage process, if the wrinkled financial documents and the common financial documents are distributed together and placed in the financial document classifying box, the wrinkled financial documents and the common financial documents are easy to be secondarily bent and damaged in the financial document classifying box due to the extrusion of other financial documents, and meanwhile, the wrinkled financial documents are blocked in the financial document classifying box due to the accumulation of other financial documents, so that the problem of blockage of the financial document classifying box is caused;
2) because the financial documents are made of paper materials, wrinkles are difficult to avoid in the storage process, if the wrinkled financial documents and the common financial documents are distributed together and placed in the financial document classifying box, the wrinkled financial documents and the common financial documents are easy to be secondarily bent and damaged in the financial document classifying box due to the extrusion of other financial documents, and meanwhile, the wrinkled financial documents are blocked in the financial document classifying box due to the accumulation of other financial documents, so that the problem of blockage of the financial document classifying box is caused;
3) among the automatic collator of current financial document, financial document falls into in the regular box along the passageway free fall, then arranges financial document's position through the driving lever, because the driving lever is stirred every time and is inconsistent to the produced displacement of financial document, consequently adopts the driving lever to carry out the final financial document's of mode that fixes a position to financial document also to have the error, makes financial document paste irregular, and the driving lever can not produce great downward force again to make financial document also have and paste insecure problem.
Disclosure of Invention
The invention aims to overcome the technical defects and provide a financial document intelligent processing system and a device thereof based on multi-wavelength optical wrinkle identification, which can comprehensively solve the problems.
In order to achieve the technical purpose, the technical scheme of the invention provides an intelligent financial voucher processing device, which comprises a financial voucher leveling component, a financial voucher storage component and an alignment pasting component;
the financial document leveling assembly comprises a financial document placing platform, a financial document adsorption adjusting part and a leveling roller assembly; the financial voucher placing platform is arranged in a lifting and overturning manner, transverse moving rollers and longitudinal moving rollers are uniformly embedded in the table top in a staggered manner, and a plurality of negative pressure adsorption ports are uniformly distributed among the moving rollers at intervals; the financial voucher adsorption adjusting component is arranged right above the financial voucher placing platform and at least comprises a rotating component, a telescopic component and an adsorption component, the steering end of the rotating component can rotate clockwise to one side of the leveling roller assembly and anticlockwise to one side of the financial voucher transfer guide rail around a horizontal axis, the fixed end of the telescopic component is fixedly connected with the steering end of the rotating component, and the adsorption component is fixedly arranged at the movable end of the telescopic component; the leveling roller assembly is arranged on one side of the financial document placing platform and comprises two roller groups which are arranged up and down symmetrically, and surface contact is formed between the two roller groups;
the financial document storage assembly comprises a folded financial document storage assembly and a flattened financial document storage assembly, and the folded financial document storage assembly comprises a financial document transfer guide rail, a financial document transfer seat and a financial document storage platform; the financial voucher transfer guide rail is vertically arranged on one side of the financial voucher placing platform, the financial voucher transfer seat is movably sleeved on the financial voucher transfer guide rail, and a financial voucher storing platform is arranged at the stroke end point of the financial voucher transfer guide rail; the flat financial document storage assembly comprises a lead-in part and a classification box, the lead-in part is arranged at an output port of the conveying roller assembly, and an input port of the classification box is arranged opposite to a lead-out port of the lead-in part;
the alignment pasting assembly comprises a regular box and a gluing part, the regular box and the financial document placing platform are arranged up and down oppositely, a three-dimensional moving guide rail is erected above the regular box, and the gluing part is arranged at the vertical telescopic free end of the three-dimensional moving guide rail.
The technical scheme of the invention also provides a financial voucher intelligent processing system based on multi-wavelength optical wrinkle identification, which comprises the financial voucher intelligent processing device and an image identification module, wherein the image identification module comprises a light-emitting unit, a picture acquisition unit, a position identification unit, a gray level conversion unit and a gray level judgment unit, the light-emitting unit comprises an environmental light source, and the environmental light source is an LED lamp array arranged on one side of a financial voucher placing platform; the image acquisition unit is arranged above the financial document placing platform and used for acquiring images of financial documents on the financial document placing platform, the position identification unit is used for identifying the position of the financial document according to a pre-stored shape and size and in combination with a three-dimensional coordinate system, the gray scale conversion unit is used for converting the acquired image into a gray scale image in a gray scale mode, the gray scale judgment unit is used for comparing the pixel gray scale value of the gray scale image according to a set gray scale threshold value, and whether the financial document has wrinkles or not is judged according to the judgment condition that the pixel gray scale value of the wrinkle position is higher than the set gray scale threshold value.
Compared with the prior art, the single financial document placed in a stacked mode can be lifted and sent into the leveling roller assembly through the financial document adsorption adjusting component, so that the folded financial document in the stacked financial document can be rolled and leveled, other subsequent work on the financial document is facilitated, meanwhile, single-side light rays emitted by the LED lamp array arranged on one side of the financial document placing platform are used, the part on one side of the back light of the fold on the financial document can generate shadows under the single-side light rays provided by the LED lamp array, and after the gray level conversion is carried out on the picture collected by the picture collecting unit, the pixel gray level value of the fold position is higher than the gray level value of the plane position; and comparing the pixel gray value of the gray picture according to a set gray threshold, judging whether the financial document has wrinkles or not based on the judgment condition that the pixel gray value of the wrinkle position is higher than the set gray threshold, and flattening the wrinkles on the financial document through surface contact rolling formed by the flattening rolling roller assembly to obtain the flattened financial document.
The corrugated financial voucher is transferred to the financial voucher transfer seat through the matching of the financial voucher adsorption adjusting part and the adsorption part on the financial voucher transfer seat, and the corrugated financial voucher is transferred to the financial voucher storage platform along the financial voucher transfer guide rail by the financial voucher transfer seat, so that the corrugated financial voucher is stored independently, secondary bending cannot occur in the storage process, and the problem that the corrugated financial voucher is damaged or blocks a financial voucher classification box due to accumulation and storage is solved.
The financial document placing platform is further provided with a transverse moving roller and a longitudinal moving roller to realize the transverse and longitudinal adjustment of the financial document, so that the financial document moves to a set position, the financial document is positioned in a negative pressure adsorption mode, then the financial document is buckled and pressed in a regular box which is arranged up and down opposite to the financial document placing platform through turning and lifting actions, and meanwhile, the financial document except the first financial document is stuck on a glue coating part of the previous financial document under the buckling and pressing action force of the financial document placing platform to realize the positioning and sticking of the financial document.
Drawings
FIG. 1 is a schematic structural diagram of an intelligent processing apparatus for financial documents according to an embodiment of the present invention;
FIG. 2 is another schematic structural diagram of an intelligent processing apparatus for financial documents according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of another structure of an intelligent processing apparatus for financial documents according to an embodiment of the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 3;
FIG. 5 is a schematic structural diagram of a financial document positioning platform according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a financial document adsorption adjustment component according to an embodiment of the invention;
FIG. 7 is a schematic diagram of a folded financial document storage assembly according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a financial document positioning platform and an alignment and attachment assembly according to an embodiment of the present invention;
FIG. 9 is a schematic structural view of an alignment applicator assembly according to an embodiment of the present invention;
FIG. 10 is a block diagram of the elements of the image recognition module according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 10, an embodiment of the present invention provides an intelligent processing system for financial documents based on multi-wavelength optical wrinkle identification, which includes an intelligent processing apparatus for financial documents, which includes a financial document leveling component, a financial document storage component, and an alignment pasting component 8, and an image recognition module 4.
The financial document leveling assembly comprises a financial document placing
The table top of the financial document placing
In addition, a plurality of negative pressure adsorption ports 13 are uniformly distributed at intervals between the movable rollers and used for adsorbing and positioning the financial documents after the financial documents are moved to a target position, all the negative pressure adsorption ports 13 can be connected to the same vacuum pump through negative pressure adsorption channels in the platform, the negative pressure adsorption ports 13 on the negative pressure adsorption platform can be divided into units according to set unit areas, the negative pressure adsorption ports 13 in the same set unit areas can be connected to the same vacuum pump through negative pressure adsorption channels in the platform, namely, the negative pressure adsorption ports 13 in the unit areas are opened and closed simultaneously.
The financial document placing
The financial document adsorption and
As shown in fig. 4, the leveling roller assembly 3 includes two roller sets 31 and 32 which are arranged opposite to each other from top to bottom, each roller set includes at least one set of rolling conveyor belt, the roller shafts of the rolling conveyor belts are arranged in parallel with the side edges of the leveling roller assembly 3 corresponding to the financial document placing
The financial document storage assembly comprises a folded financial document storage assembly and a flattened financial document storage assembly.
The folded financial document storage assembly comprises a financial document
The financial
The flat financial
The subassembly 8 is pasted in alignment includes regular box 81 and rubber coating part 82, as shown in fig. 8 and fig. 9, regular box 81 with financial document place the
As shown in fig. 10, the image recognition module 4 includes a light emitting unit 41, a picture collecting unit 42, a position recognition unit 43, a gray conversion unit 44, and a gray determination unit 45; the light emitting unit 41 includes an ambient light source 411, as shown in fig. 4, the ambient light source 411 is an LED lamp array disposed on one side of the financial
In order to further determine the existence of wrinkles, the light emitting unit 41 further includes a background light source 412 disposed in the light source direction, the background light source 412 is disposed on a horizontal adjusting arm 413, the horizontal adjusting arm may be any existing mechanical arm capable of performing telescopic and/or transverse and/or longitudinal displacement adjustment on a horizontal plane, as shown in fig. 4, in an embodiment of the present invention, a link mechanical arm is employed, and includes a first link and a second link, one end of the first link is pivotally connected to a fixed point, the other end of the first link is pivotally connected to the second link, the first link is capable of rotating around the fixed point, and the second link is capable of rotating around the other end of the first link, so as to achieve position adjustment on the horizontal plane. The background light source 412 provides light from bottom to top for the financial document from the back side of the financial document, the light transmittance of the wrinkle part is low under the action of high-brightness background light, and whether the financial document has wrinkles or not is secondarily judged according to the difference between the wrinkle part and the plane part. The background light source 412 is automatically retracted to a hidden position set at one side when not in operation, and the horizontal height of the background light source 412 is lower than that of the highest stroke end point of the lifting rod. In addition, the background light source 412 adopts a multi-color LED lamp to provide multi-color background light for the financial document, and based on a multi-color compensation scanning method, different wavelength bands and wavelengths are provided by different color lights to scan information on the financial document, and gray scale identification and modeling are performed on the information obtained by each scanning, and the determined financial document information is obtained by matching with image data of standard characters.
When the financial document is placed on the financial document placing
If the financial document is preliminarily judged to have wrinkles, the financial document
Then, the background light source 412 extends out from the hidden position at one side through the horizontal adjusting arm 413, and moves to the position below the fold position to provide high-brightness background light for the fold position, and the light transmittance of the fold or the folded part is low under the action of the high-brightness background light, so that whether the financial document has folds or not is accurately judged through gray level identification by collecting the financial document image under the background light again. In order to avoid the problem that the precision of the hardware device affects the positioning precision, the background light source 412 may be moved around the positioning point within a small range by the cooperation of the transverse telescopic arm and the longitudinal rail after being positioned below the fold position.
When the financial document is determined to have wrinkles, the second rotating part 22 of the financial document adsorption and
After the financial document is leveled and returns to the financial document placing platform 1, the second rotating part 22 of the financial document adsorption and adjustment part 2 is controlled to rotate towards one side of the financial document transfer guide rail 5 with the folded financial document, the financial document is sent to a position close to the financial document transfer guide rail 5, one side of the financial document is lifted and close to one side of a financial document transfer seat 6 arranged on the financial document transfer guide rail 5, meanwhile, the third adsorption part 62 on the financial document transfer seat 6 is started, the first adsorption part 26 of the financial document adsorption and adjustment part 2 close to one side of the financial document transfer seat 6 is closed, one end of the financial document close to the financial document transfer seat 6 is adsorbed to the financial document transfer seat 6 under the action of negative pressure adsorption, then the first adsorption part 26 of the financial document adsorption and adjustment part 2 far away from one side of the financial document transfer seat 6 is closed, so that the other end of the financial voucher is vertically attached to the financial voucher transfer seat 6 under the action of the adsorption force, the gravity and the zigzag restoring force, and the financial voucher adsorption adjusting part 2 is restored to the initial state.
After the financial document is transferred to the financial
If the financial document is not wrinkled in the initial interpretation, the financial document adsorption and
When the financial voucher needs to be pasted, the financial voucher intelligent processing system based on multi-wavelength optical wrinkle recognition reversely operates according to the steps of storing the wrinkle financial voucher to transfer the wrinkle financial voucher to the financial
When a first financial document to be pasted is placed in the financial document positioning and sticking device, namely, falls on the financial
When the second financial document is placed in the financial
According to the invention, the financial voucher single piece which is placed in a stacking mode can be lifted and sent into the leveling and rolling roller assembly through the financial voucher adsorption and adjustment component, so that the folded financial vouchers in the stacked financial vouchers can be rolled and leveled, other subsequent work on the financial vouchers is facilitated, meanwhile, the part on the backlight side of the financial vouchers can generate shadows under the single-side light provided by the LED lamp array through the single-side light emitted by the LED lamp array arranged on one side of the financial voucher placing platform, and after the pictures collected by the picture collecting unit are subjected to gray level conversion, the pixel gray value of the fold position is higher than the gray value of the plane position; and comparing the pixel gray value of the gray picture according to a set gray threshold, judging whether the financial document has wrinkles or not based on the judgment condition that the pixel gray value of the wrinkle position is higher than the set gray threshold, and flattening the wrinkles on the financial document through surface contact rolling formed by the flattening rolling roller assembly to obtain the flattened financial document.
The corrugated financial voucher is transferred to the financial voucher transfer seat through the matching of the financial voucher adsorption adjusting part and the adsorption part on the financial voucher transfer seat, and the corrugated financial voucher is transferred to the financial voucher storage platform along the financial voucher transfer guide rail by the financial voucher transfer seat, so that the corrugated financial voucher is stored independently, secondary bending cannot occur in the storage process, and the problem that the corrugated financial voucher is damaged or blocks a financial voucher classification box due to accumulation and storage is solved.
The financial document placing platform is further provided with a transverse moving roller and a longitudinal moving roller to realize the transverse and longitudinal adjustment of the financial document, so that the financial document moves to a set position, the financial document is positioned in a negative pressure adsorption mode, then the financial document is buckled and pressed in a regular box which is arranged up and down opposite to the financial document placing platform through turning and lifting actions, and meanwhile, the financial document except the first financial document is stuck on a glue coating part of the previous financial document under the buckling and pressing action force of the financial document placing platform to realize the positioning and sticking of the financial document.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
- 上一篇:一种医用注射器针头装配设备
- 下一篇:多功能弹性夹