CN111666778B

CN111666778B - Ultrahigh frequency RFID (radio frequency identification) tag scanner

Info

Publication number: CN111666778B
Application number: CN202010538093.9A
Authority: CN
Inventors: 俞立群
Original assignee: Wuxi Henghua Software Technology Co ltd
Current assignee: Wuxi Henghua Software Technology Co ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2020-12-29
Anticipated expiration: 2040-06-12
Also published as: CN111666778A

Abstract

The invention relates to the technical field of radio frequency identification, in particular to an ultrahigh frequency RFID (radio frequency identification) label scanner, which comprises a horizontal conveying belt, a scanning unit, a first transmission unit and a second transmission unit, wherein the horizontal conveying belt is used for horizontally conveying the scanned unit within a set length range; the conveyor belt is turned over, blocks the scanned unit in free fall, and provides an inclined downward guide for the scanned unit. The invention enables the scanned unit to undergo the processes of horizontal conveying, collision and rolling falling in the process of movement; the scanning unit that obtains the upset trend after the collision is led to the direction of slope decurrent direction for thereby being rolled and make by the RFID label in the scanning unit obtain different show directions and be read by comprehensive under above-mentioned trend by the scanning unit, thereby above-mentioned automatic process is effectual to have reduced manual operation's the degree of difficulty and has improved the accuracy, but wide application in department store, supermarket and convenience store etc. can realize the purpose of automatic cash registering after being connected with payment system, still can be applied to the RFID label scanning of production line and logistics storage.

Description

Ultrahigh frequency RFID (radio frequency identification) tag scanner

Technical Field

The invention relates to the technical field of radio frequency identification, in particular to an ultrahigh frequency RFID (radio frequency identification) label scanner.

Background

Ultrahigh frequency RFID tag reading is frequently used in supply chain and circulation fields, and is generally applied to various types of department goods, and in production lines, material sorting and distribution lines and goods selling places of enterprises, it is common to buckle RFID tags on flexible bag-shaped packages, case-shaped packages with certain hardness, or goods of various shapes, and place hundreds of goods and RFID tags in scanned units (such as paper boxes and plastic bags), and scan and read information such as the number of RFID tags using a channel machine or other scanning equipment.

However, due to the reason of the RFID tags themselves, a large number of static RFID tags are not easy to be read completely and accurately in the scanned unit, and in order to solve the above problems, the scanned unit is turned over at the scanning position in a manual manner, so that the antenna completely reads the number of RFID tags in the scanned unit. In the process, different operators are difficult to ensure the same operation action, so that the final working effect is difficult to determine, and the working strength of the scanned unit is higher in the overturning process.

In view of the above, the inventor of the present invention has actively researched and innovated based on the practical experience and professional knowledge of the product engineering application for many years, and together with the application of the theory, so as to create an ultrahigh frequency RFID tag scanner, which is more practical.

Disclosure of Invention

The invention aims to provide an ultrahigh frequency RFID label scanner, thereby effectively solving the problems in the background technology.

In order to achieve the purpose, the invention adopts the technical scheme that:

an ultra high frequency RFID tag scanner comprising:

the horizontal conveying belt is used for horizontally conveying the scanned unit within a set length range, and when the scanned unit exceeds the set length range, the scanned unit freely falls;

and the turnover conveying belt is used for blocking the scanned unit in free fall and providing inclined downward guidance for the scanned unit within a set length range.

Furthermore, a protruding structure is arranged on the guide surface of the turnover conveying belt.

Further, the turnover conveying belt device further comprises a blocking structure which is arranged in a falling path of the scanned unit, collides with the scanned unit and provides guidance for the scanned unit to incline downwards and face the turnover conveying belt.

Further, the guide surface of the turnover conveyor belt is inclined by 20-70 degrees relative to the horizontal direction.

Further, the protruding structure is a strip-shaped structure and is arranged along the horizontal direction.

Further, the device also comprises a receiving part for collecting the scanned units from the turnover conveying belt.

Further, the blocking structure is a plate structure.

Further, the blocking structure comprises a mounting structure and a crash plate body;

the collision plate body is used for colliding with the scanned unit and is rotatably connected with the mounting structure, and a first buffer spring is arranged between the mounting structure and the collision plate body.

Furthermore, the mounting structure comprises a fixed plate body, a mounting plate body and two connecting structures for connecting the fixed plate body and the mounting plate body;

the fixing plate body is fixedly arranged, and the mounting plate body is attached to the fixing plate body and is rotationally connected with the collision plate body;

wherein, connection structure is including running through the guide post of fixed plate body and installation plate body, and set up in the baffle structure at guide post both ends, the peripheral cover of guide post is equipped with second buffer spring, second buffer spring set up in fixed plate body and one side between the baffle structure.

Further, a rubber layer is arranged between the fixing plate body and the mounting plate body.

Through the technical scheme of the invention, the following technical effects can be realized:

according to the invention, through the arrangement of the horizontal conveying belt and the turnover conveying belt, the scanned unit can be subjected to a horizontal conveying process, a collision process and a rolling falling process in the moving process; the downward direction of slope can lead to the scanned unit who obtains the upset trend after the collision for thereby by the scanned unit roll under above-mentioned trend and make the RFID label in the scanned unit obtain different show directions by comprehensive reading, thereby above-mentioned automatic process is effectual to have reduced manual operation's the degree of difficulty and has improved the accuracy, but wide application in department store, supermarket and convenience store etc. after being connected with payment system, can realize the automatic purpose of receiving cash, still can be applied to the RFID label scanning of production line and logistics storage.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a scanned unit of an UHF RFID tag scanner during horizontal transport;

FIG. 2 is a schematic diagram of a scanned cell in an UHF RFID tag scanner during a collision;

FIG. 3 is a schematic diagram of a scanned unit in a UHF RFID tag scanner during a roll-down process;

FIG. 4 is a schematic view of FIG. 1 after a barrier structure is provided;

FIG. 5 is a schematic diagram of an UHF RFID tag scanner employing a conveyor as the receiving section;

FIG. 6 is a schematic diagram of an optimization of the barrier structure;

FIG. 7 is a schematic diagram of a further optimization of the barrier structure of FIG. 6;

FIG. 8 is an isometric view of the plan view of FIG. 7;

FIG. 9 is a schematic view of a connection structure;

FIG. 10 is a cross-sectional view of FIG. 7;

reference numerals: the scanning device comprises a horizontal conveying belt 1, a scanned unit 2, an overturning conveying belt 3, a protruding structure 31, an antenna group 4, a reader-writer 5, a receiving part 6, an equipment shell 7, a blocking structure 8, a mounting structure 81, a fixing plate 81a, a mounting plate 81b, a guide column 81c, a baffle structure 81d, a second buffer spring 81e, a collision plate 82 and a first buffer spring 83.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. This embodiment is written in a progressive manner.

As shown in fig. 1 to 10, an ultrahigh frequency RFID tag scanner includes: the horizontal conveying belt 1 is used for horizontally conveying the scanned unit 2 within a set length range, and when the scanned unit 2 exceeds the set length range, the scanned unit 2 freely falls; the conveyor belt 3 is turned over, blocks the scanned unit 2 in free fall, and provides the scanned unit 2 with a guide inclined downward within a set length range.

The conveyer belts in the embodiment are all circular reciprocating conveyer belt structures in the prior art, both ends of the conveyer belts are supported by rollers, and at least one roller is used as a power end to drive the conveyer belt to move. According to the invention, through the arrangement of the horizontal conveying belt 1 and the turnover conveying belt 3, the scanned unit 2 undergoes the following three processes in the moving process:

the first process is as follows: process of horizontal conveyance

In the process, as shown in fig. 1, the horizontal conveyor belt 1 can be butted with other conveyor lines in the production line, and can also be directly used for placing the scanned unit 2, and the purpose of the use is to convey the scanned unit 2 to the position of the turnover conveyor belt 3;

and a second process: process of collision

As shown in fig. 2, this process is implemented by turning over the conveyor belt 3 to block the falling scanned unit 2, and the scanned unit 2 will get a tendency of turning over under the reaction force after collision;

the third process: process of rolling down

As shown in fig. 3, the scanned unit 2 that has acquired the tendency of flipping in the second process is guided by the guiding unit that is tilted downward, so that the scanned unit 2 rolls over in the above-mentioned tendency to make the RFID tags in the scanned unit 2 acquire different display directions, thereby being read comprehensively.

The ultrahigh frequency RFID label scanner can be used by matching with an antenna group 4 and a reader-writer 5 in the prior art, the number of ultrahigh frequency RFID labels in the scanned unit 2 is fully read by the antenna group 4, and the antennas of the antenna group 4 are respectively and electrically connected with the reader-writer 5. The setting position of the antenna group 4 can be selected according to the needs, the shape of the device shell 7 can be adaptively set, the invention does not limit the type, the installation mode and the like of the antenna group 4 and the reader-writer 5, and does not limit the structural shape of the device shell 7, and the above characteristics are all reasonably matched.

As a preference of the above embodiment, the guide surface of the turnover conveyor belt 3 is provided with a convex structure 31, which can obtain the tendency of rolling again by blocking the turnover conveyor belt during the rolling process of the scanned unit 2, thereby further improving the accuracy and comprehensiveness of the scanning. Wherein, protruding structure 31 can be belt-like structure, and sets up along the horizontal direction, through belt-like structure's setting, can improve the stability of upset conveyer belt 3 support plane on the one hand, on the other hand still can improve the probability with being collided by scanning unit 2.

As a preference of the above embodiment, as shown in fig. 4, the uhf RFID tag scanner further includes a blocking structure 8, and the blocking structure 8 is disposed in the path of the scanned unit 2 falling, collides with the scanned unit 2, and provides guidance to the scanned unit 2 obliquely downward and toward the flip conveyor 3. Through the setting of barrier structure 8 for by scanning unit 2 obtain the collision at the in-process of whereabouts, through the reasonable setting to barrier structure 8 position, can make barrier structure 8 obtain with by scanning unit 2 more reasonable collision position, thereby make it because the collision overturn with higher speed. Specifically, as shown in the figure, the collision preferably occurs at an edge position of the scanned unit 2, and the direction transition by the collision can realize a quick inversion.

Wherein, the inclination range of the guide surface of the turnover conveyer belt 3 is 20 to 70 degrees relative to the horizontal direction, and through the selection of the angle range, on one hand, the attachment of the scanned unit 2 to the guide surface due to the over-small angle can be avoided, on the other hand, the falling speed of the scanned unit 2 caused by the over-large angle can be avoided too fast, and the turnover frequency is insufficient under the two conditions, so that the effectiveness of comprehensive scanning is reduced.

As a preference of the above embodiment, a receiving portion 6 for collecting the scanned units 2 from the inverting conveyor belt 3 is further included. As shown in fig. 1 to 4, the receiving portion 6 in the preferred embodiment may be a goods collecting rack or a box for collecting the scanned units 2, which is suitable for selling places of department goods, and the purpose of automatic cash collection can be achieved by using a cash collecting system, and the goods fall to the goods collecting rack or the box for the buyers to pack by themselves; alternatively, as shown in fig. 5, the receiving portion 6 may be an additional conveyor, so as to directly transport the scanned unit 2 to other positions, which is more suitable for RFID tag scanning of production lines and logistics storage, sorting and/or counting of goods through scanning identification, and the like; of course, the above application modes are only a few possibilities provided in the embodiment, and various application modes can be replaced according to actual needs, and other feasible application modes are also within the protection scope of the present invention.

The blocking structure 8 is a plate structure, the plate structure is simple, and in the actual application process, the blocking structure can be connected with the equipment shell 7 through welding or connecting pieces and other connecting forms.

The plate structure in the above embodiment can effectively achieve the object of the present invention, but is hard, which is likely to cause local damage of the scanned unit 2, especially when the scanned unit 2 is heavy, which is particularly obvious, and in order to overcome the above problem, the present invention also provides an embodiment of the blocking structure 8:

as shown in fig. 6, the blocking structure 8 comprises a mounting structure 81 and a collision plate body 82; the collision plate 82 is used for colliding with the unit 2 to be scanned, and is rotatably connected to the mounting structure 81, and a first buffer spring 83 is provided between the mounting structure 81 and the collision plate 82. In the above-described structure in which the first buffer spring 83 collides with the collision plate 82 during the falling of the unit to be scanned 2 and compresses the first buffer spring 83, so that the collision plate 82 rotates relative to the mounting structure 81 for the purpose of buffering, the first buffer spring 83 also provides an elastic force to the unit to be scanned 2 to facilitate the overturning thereof during the elastic recovery.

In the above preferred embodiment, the buffering problem of the scanned unit 2 during falling is mainly focused to avoid damage, the number of the first buffer springs 3 can be selected according to actual needs, but due to frequent impacts of the scanned unit 2, the rotating connection between the mounting structure 81 and the collision plate 82 is easily damaged. To alleviate this, the mounting structure 81 is optimized in the following way:

the mounting structure 81 includes a fixing plate 81a, a mounting plate 81b, and two connecting structures for connecting the fixing plate and the mounting plate; the fixing plate 81a is fixedly arranged, and the mounting plate 81b is attached to the fixing plate 81a and rotatably connected to the collision plate 82; wherein, connection structure is including the guide post 81c that runs through fixed plate 81a and the installation plate 81b to and set up in the baffle structure 81d at guide post 81c both ends, and the peripheral cover of guide post 81c is equipped with second buffer spring 81e, and second buffer spring 81e sets up between fixed plate 81a and a side baffle structure 81 d.

In this embodiment, the collision plate 82, the mounting plate 81b and the first buffer spring 83 form a whole, and the whole and the fixing plate 81a form a buffer combination through a connection structure, so as to effectively reduce the stress at the rotation connection position of the collision plate 82 and the mounting plate 81b, and reduce the damage probability at the rotation connection position.

Specifically, the first buffer spring 83 independently receives the buffer of the pressing action of the scanning unit 2, and when the first buffer spring 83 is elastically restored, the fixing plate 81a and the mounting plate 81b can be relatively separated to reduce the stress at the rotating connection position of the collision plate 82 and the mounting plate 81b, and meanwhile, the separation condition can be buffered through the second buffer spring 81e, so that the whole working process of the blocking structure 8 is more flexible.

The fixing plate 81a may also be used independently, the whole body formed by the collision plate 82, the mounting plate 81b and the first buffer spring 83 may be pre-assembled in advance, and the guide posts 81c may be used to guide the second buffer spring 81e and to connect the fixing plate 81a and the mounting plate 81b, according to the weight and volume of the actual scanned unit 2.

As a preference of the above embodiment, a rubber layer is provided between the fixing plate 81a and the mounting plate 81b, thereby reducing the generation of noise, and of course, in the case of normal use and moderate weight of the scanned unit 2, there may be no separation between the fixing plate 81a and the mounting plate 81 b.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An ultra high frequency RFID tag scanner, comprising: the horizontal conveying belt (1) is used for horizontally conveying the scanned unit (2) within a set length range, and when the scanned unit (2) exceeds the set length range, the scanned unit falls freely; the overturning conveying belt (3) is used for blocking the scanned unit (2) in free fall and providing downward inclined guidance in a set length range for the scanned unit (2); the overturning device further comprises a blocking structure (8), wherein the blocking structure (8) is arranged in a falling path of the scanned unit (2), collides with the scanned unit (2), and provides guidance for the scanned unit (2) obliquely downwards and towards the overturning conveying belt (3).

2. The uhf RFID tag scanner of claim 1, wherein the guide surface of the flip conveyor (3) is provided with a raised structure (31).

3. The uhf RFID tag scanner according to any of claims 1-2, wherein the guide surface of the flip conveyor (3) is inclined with respect to the horizontal in the range of 20 ° -70 °.

4. The uhf RFID tag scanner of claim 2, wherein the raised structure (31) is a ribbon structure and is disposed in a horizontal orientation.

5. The UHF RFID tag scanner according to any of claims 1-2, further comprising a receiving section (6) for collecting the scanned units (2) from the inverted conveyor belt (3).

6. The uhf RFID tag scanner of claim 1, wherein the blocking structure (8) is a plate structure.

7. The uhf RFID tag scanner of claim 1, wherein the blocking structure (8) comprises a mounting structure (81) and a crash plate (82); the collision plate body (82) is used for colliding with the scanned unit (2), is rotatably connected with the mounting structure (81), and is provided with a first buffer spring (83) between the mounting structure (81) and the collision plate body (82).

8. The uhf RFID tag scanner of claim 7, wherein the mounting structure (81) comprises a fixed plate (81 a), a mounting plate (81 b), and two connecting structures connecting the two; the fixing plate body (81 a) is fixedly arranged, and the mounting plate body (81 b) is attached to the fixing plate body (81 a) and is rotatably connected with the collision plate body (82); wherein, connection structure is including running through guide post (81 c) of fixed plate body (81 a) and installation plate body (81 b), and set up in baffle structure (81 d) at guide post (81 c) both ends, the peripheral cover of guide post (81 c) is equipped with second buffer spring (81 e), second buffer spring (81 e) set up in fixed plate body (81 a) and one side between baffle structure (81 d).

9. The uhf RFID tag scanner of claim 8, wherein a rubber layer is disposed between the fixed plate (81 a) and the mounting plate (81 b).