CN106909862B - Bar code scanning device - Google Patents
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- CN106909862B CN106909862B CN201510965771.9A CN201510965771A CN106909862B CN 106909862 B CN106909862 B CN 106909862B CN 201510965771 A CN201510965771 A CN 201510965771A CN 106909862 B CN106909862 B CN 106909862B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10712—Fixed beam scanning
- G06K7/10762—Relative movement
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Abstract
The invention discloses a bar code scanning device, relating to the technical field of medical instruments; the device comprises a bottom plate, synchronous wheel mounting plates, a pipe frame, a transmission mechanism, a scanning mechanism and a position detection mechanism, wherein the two synchronous wheel mounting plates are fixedly mounted on the bottom plate in parallel; the transmission mechanism comprises a first power device, synchronous wheels and synchronous belts, the two synchronous wheel mounting plates are respectively provided with a synchronous wheel, the two synchronous wheels are driven by the first power device to rotate, and each synchronous wheel is respectively provided with a synchronous belt; the pipe frame is used for placing a plurality of containers, one end of the pipe frame is placed on one synchronous belt, and the other end of the pipe frame is placed on the other synchronous belt; the position detection mechanism comprises an indexing code disc detector and an indexing code disc, and the indexing code disc is fixed on the synchronizing wheel; the invention has the beneficial effects that: the degree of automation is high, and the pipe support can not appear jolting, and the transmission is steady to the condition of missing sweeping, mistake sweeping can not appear.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a bar code scanning device.
Background
Before reagent inspection, in order to correspond detection sample information with a detection result, bar code marking information pasted on a test tube filled with a reagent sample is scanned, identified and recorded, a manual hand-held bar code recorder is adopted to take the test tube out of a tube frame singly for scanning, identifying and recording, the labor intensity is high, the scanning speed is low, the working efficiency is low, the conditions of wrong scanning and missing scanning are easy to occur, in addition, an operator can possibly contact with the reagent sample, the sample is polluted, and potential safety threats are caused to the operator.
The prior art discloses a bar code scanning device, this bar code scanning device includes the bottom plate, the gib block, scanning rifle and pipe support, and a plurality of gib blocks set up side by side on the bottom plate, and the scanning rifle is installed on one side of bottom plate, and the pipe support bottom is provided with the recess with gib block looks adaptation, when carrying out the bar code scanning, through handheld pipe support, pushes the pipe support along the gib block, and the scanning rifle scans the bar code on the pipe support in proper order, and the information of bar code is then typeeed. If the pushing speed is too high in the scanning process, the bar code scanning device with the structure can generate scanning missing, the bar code scanning device needs to be manually pushed into the pipe frame for scanning, and the automation degree is low; in addition, the pipe frame is not stable enough in the scanning process due to the fact that the pipe frame needs to be held by hands, and jolts easily occur.
Therefore, a barcode scanning device with high automation degree and smooth transmission is needed.
Disclosure of Invention
The invention aims to provide a bar code scanning device, and aims to solve the problems that in the prior art, the bar code scanning device is low in automation degree and not stable enough in transmission.
In order to realize the purpose of the invention, the bar code scanning device comprises a bottom plate, synchronous wheel mounting plates, a pipe frame, a transmission mechanism, a scanning mechanism and a position detection mechanism, wherein the two synchronous wheel mounting plates are fixedly mounted on the bottom plate in parallel;
the transmission mechanism comprises a first power device, synchronous wheels and synchronous belts, wherein the two synchronous wheel mounting plates are respectively provided with one synchronous wheel, the two synchronous wheels are driven by the first power device to rotate, and each synchronous wheel is respectively provided with one synchronous belt;
the pipe frame is used for placing a plurality of containers, one end of the pipe frame is placed on one synchronous belt, and the other end of the pipe frame is placed on the other synchronous belt;
the position detection mechanism comprises an indexing code disc detector and an indexing code disc with a plurality of scales, the indexing code disc is fixed on the synchronizing wheel, and the indexing code disc detector is used for monitoring the rotation angle of the synchronizing wheel;
the scanning mechanism is arranged on the bottom plate and used for scanning the bar codes of the containers on the pipe frame.
The position detection mechanism further comprises a plurality of position sensors, and the position sensors are mounted on the synchronizing wheel mounting plate and used for sensing the position of the pipe frame.
Further, the position sensor is an infrared position sensor.
Furthermore, eight position sensors are fixedly arranged on at least one of the two synchronous wheel mounting plates.
The scale of the indexing code disc is a through hole arranged on the indexing code disc, the indexing code disc detector is provided with a signal transmitting end and a signal receiving end, and the signal transmitting end and the signal receiving end are respectively positioned on two sides of the indexing code disc.
The transmission mechanism further comprises a synchronous rotating shaft, a first rotating wheel and a transmission belt; the first power device is a first stepping motor, and the synchronous rotating shaft is connected with an output shaft of the first stepping motor; the first rotating wheel and the synchronizing wheel are fixed on the same rotating shaft and are respectively installed on two sides of the synchronizing wheel installation plate, and the transmission belt is arranged on the synchronizing rotating shaft and the first rotating wheel.
Further, drive mechanism still includes the second and rotates the wheel, the second rotates the wheel and fixes on synchronous rotating shaft, driving belt sets up in first rotation wheel and second and rotates the wheel.
Furthermore, the transmission mechanism further comprises a tension wheel, and the tension wheel is fixed on the synchronous wheel mounting plate and used for tensioning the transmission belt.
The synchronous belt is provided with a plurality of small bosses for positioning the pipe frame, and the distances between the adjacent small bosses on each synchronous belt are equal.
Furthermore, one end of the pipe support is placed between two adjacent small bosses on one synchronous belt, the other end of the pipe support is placed between two adjacent small bosses on the other synchronous belt, and the distances between the adjacent pipe supports are equal.
Furthermore, the eight-index code disc of the index code disc drives the pipe support to move by the distance between the adjacent pipe supports when the index code disc rotates by one index.
The scanning mechanism comprises a second stepping motor, a screw rod, a linear guide rail and a scanner, the second stepping motor is fixed on the bottom plate, the screw rod is connected with an output shaft of the second stepping motor, the scanner is arranged on the linear guide rail in a sliding mode, and the scanner slides on the linear guide rail through the driving of the screw rod.
Furthermore, the device also comprises a stepping motor driver, and the stepping motor driver is fixed on the bottom plate.
Compared with the prior art that the scanning is carried out by a handheld scanner or the scanning is carried out by manually pushing the pipe support, the automatic scanning device has high automation degree, the pipe support does not have interference caused by human factors in the scanning and moving processes, the pipe support does not bump, the transmission is stable, and the conditions of missing scanning and wrong scanning are avoided.
Drawings
Fig. 1 is a schematic structural diagram of a barcode scanning apparatus according to an example of the present invention.
Fig. 2 is a schematic view of the structure of a synchronizing wheel, a timing belt and a synchronizing wheel mounting plate in another example of the present invention.
Fig. 3 is a schematic structural diagram of a barcode scanning apparatus according to another example of the present invention.
Fig. 4 is a schematic structural diagram of a barcode scanning apparatus according to another example of the present invention.
Fig. 5 is a schematic view of the structure of a synchronizing wheel, a timing belt and a synchronizing wheel mounting plate in another example 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.
The invention provides a first embodiment, and the embodiment provides a barcode scanning device, as shown in fig. 1, which is a top view of the barcode scanning device, the barcode scanning device includes a bottom plate 10, a synchronizing wheel mounting plate 20, a pipe frame 30, a transmission mechanism, a scanning mechanism 40 and a position detection mechanism, wherein the two synchronizing wheel mounting plates 20 are fixedly mounted on the bottom plate 10 in parallel; the transmission mechanism comprises a first power device 501, synchronous wheels 502 and synchronous belts 503, the two synchronous wheel mounting plates 20 are respectively provided with the synchronous wheels 502, the two synchronous wheels 502 are driven by the first power device 501 to rotate, and each synchronous wheel 502 is respectively provided with the synchronous belt 503; the pipe frame 30 is used for placing a plurality of containers, one end of the pipe frame 30 is placed on a synchronous belt 503, and the other end of the pipe frame 30 is placed on another synchronous belt 503; the position detection mechanism comprises an index code disc detector 601 and an index code disc 602 with a plurality of scales, the index code disc 602 is fixed on the synchronizing wheel 502, and the index code disc detector 601 is used for monitoring the rotation angle of the synchronizing wheel 502; the scanning mechanism 40 is disposed on the bottom plate 10, and the scanning mechanism 40 is used for scanning the bar code of the container on the pipe frame 30.
The bar code scanning device is used for scanning the bar code on the container, and the container can be an anticoagulant tube or a test tube filled with a reagent; in the following examples of the present invention, a container is used as a test tube containing a reagent. In combination with the structure of the barcode scanning device, we describe the working process of the barcode scanning device, after a first tube rack 30 is placed at an initial position on the synchronous belt 503, the scanning mechanism 40 sequentially scans the barcodes of the test tubes on the tube rack 30, and after the barcodes of the test tubes on the tube rack 30 are completely scanned, the control system sends an instruction to control the first power device 501 to drive the two synchronous wheels 502 to rotate simultaneously, so as to drive the two synchronous belts 503 to rotate simultaneously, and further drive the tube rack 30 on the synchronous belts 503 to move; due to the effects of the indexing code disc 602 and the indexing code disc detector 601, the rotation of the synchronizing wheel 502 can be monitored in real time, after the synchronizing wheel 502 rotates for a set angle, the indexing code disc detector 601 detects a corresponding signal, the signal is sent to the control system, the control system controls the first power device 501 to stop running, the synchronous belt 503 drives the pipe racks 30 to move out of the distance between adjacent pipe racks 30, the initial position for placing the pipe racks 30 on the synchronous belt 503 is vacant at the moment, the second pipe rack 30 is placed, the steps are repeated, and a plurality of pipe racks 30 can be placed on the synchronous belt 503.
In this example, the rotation angle of the synchronizing wheel 502 can be accurately detected and controlled by the position detecting mechanism, so as to control the movement of the pipe frame 30 on the synchronizing wheel 502; through scanning mechanism 40, drive mechanism and position detection mechanism's cooperation, realized the scanning of test tube bar code on the multi-row pipe frame 30, scan or the manual mode that pushes away the pipe support and scan through handheld scanner among the prior art, its degree of automation is high, and the pipe support does not have the human factor at scanning, removal in-process and causes the interference to it, and jolt can not appear in the pipe support, and the transmission is steady to the condition of missing scanning, wrong scanning can not appear. Generally, a barcode scanning device needs to be matched with other mechanisms to realize corresponding required functions, and therefore, the barcode scanning device is designed as a part of a nucleic acid extraction device or a gene sequencing device, for example. In the prior art, the barcode scanning device generally needs to reserve the barcode scanning position and the placement position of the scanned pipe frame separately, so that the overall size of the barcode scanning device is large, the occupied space of the nucleic acid extraction device or the gene sequencing device is too large, and the overall size of the nucleic acid extraction device or the gene sequencing device is increased. In the barcode scanning device in this example, due to the design of the two synchronous belts 503, one end of the tube rack 30 is placed on one of the synchronous belts 503, the other end of the tube rack 30 is placed on the other synchronous belt 503, after the barcode of the test tube on the tube rack 30 is scanned, the barcode leaves the initial position where the tube rack 30 is placed through the rotation of the synchronous belts 503, however, the tube racks 30 are not removed from the timing belt 503, and after all the tube racks 30 are scanned, a plurality of tube racks 30 are arranged on the timing belt 503 side by side, the timing belt 503 has not only a function of moving the pipe frame 30 but also a function of placing the pipe frame 30, thereby combining the bar code scanning position and the placing position of the pipe frame 30, reducing the whole volume of the bar code scanning device, when the barcode scanning device is designed as a part of the nucleic acid extraction device or the gene sequencing device, the space inside the nucleic acid extraction device or the gene sequencing device is saved.
As shown in fig. 2, the present invention provides another example based on the example shown in fig. 1, and the structures of the base plate 10, the synchronizing wheel mounting plate 20, the pipe frame 30, the transmission mechanism and the scanning mechanism 40 are the same as those in the example shown in fig. 1, so that the above-mentioned structures are not described in detail in this example. In this example, the position detecting mechanism further includes a plurality of position sensors 603, the position sensors 603 being mounted on the synchronizing wheel mounting plate 20 for sensing the position of the pipe rack 30, the position sensors 603 preferably being infrared position sensors. As shown in fig. 2, which is a schematic structural diagram of the inner side surface of the synchronizing wheel mounting plate 20, the synchronizing wheel 502 and the driven wheel are rotatably mounted on the synchronizing wheel mounting plate 20, the synchronizing belt 503 is sleeved on the synchronizing wheel 502 and the driven wheel 504, and the plurality of position sensors 603 are sequentially fixed at positions above the synchronizing wheel mounting plate 20 for sensing the position of the pipe rack 30 placed on the synchronizing belt 503. In this example, eight position sensors 603 are fixed in an array on the synchronizing wheel mounting plate 20, but the number of the position sensors 603 may be adjusted as needed, for example, when ten pipe racks 30 need to be placed on the synchronizing belt 503, ten position sensors 603 may be fixed in an array at positions above the synchronizing wheel mounting plate. It should be noted that, because the bottom plate 10 is provided with the two parallel synchronizing wheel mounting plates 20, a plurality of position sensors 603 may be arranged and fixed at the upper position of one of the synchronizing wheel mounting plates 20, or a plurality of position sensors 603 may be fixed at the upper position of each synchronizing wheel mounting plate 20, and both of these two schemes may be used for sensing the position of the pipe rack 30; in this example, since the position detection mechanism further includes the index code 602 and the index code detector 601, in the process of determining whether the pipe rack 30 moves to the specified position, the detection by the index code detector 601 and the detection by the position sensor 603 are implemented in a matching manner, and the specific implementation process is as follows: the index code disc detector 601 is used for detecting the rotation angle of the synchronizing wheel 502, the moving distance of the pipe frame 30 can be controlled by controlling the rotation angle of the synchronizing wheel 502, and the position sensor 603 is used for detecting whether the corresponding pipe frame 30 exists at the corresponding position of the synchronizing belt 503; collecting the data of the rotation angle of the synchronizing wheel 502 and the data sensed by the position sensor 603 to the pipe frame 30, wherein when two kinds of data exist at the same time, the position of the pipe frame 30 is correct, and the scanning mechanism 40 and the first power device 501 can continue to operate; when only one of the data is available, the scanning mechanism 40 and the first power device 501 stop operating, wherein if the index code disc detector 601 detects that the rotation angle of the synchronizing wheel 502 is correct, but the position sensor 603 does not detect the pipe frame 30, it indicates that the pipe frame 30 does not move to the required position, and a deviation occurs, and this detection and judgment way avoids the situation that the pipe frame 30 does not move to the required position due to the slip of the synchronizing wheel 503. When the corresponding position sensors 603 are provided on the two timing wheel attachment plates 20, that is, when the corresponding position sensors 603 are provided on both ends of the pipe frame 30, it is possible to determine whether the pipe frame 30 is tilted on the two timing belts 503 by detecting the positions of both ends of the pipe frame 30. Through foretell judgement process, bar code scanning device's position detection mechanism in this example compares prior art, great improvement the driven precision of pipe support 30, avoided pipe support 30 deviation to appear in the transmission in-process position.
For the barcode scanning device, the invention also provides an example, the barcode scanning device includes a bottom plate 10, a synchronizing wheel mounting plate 20, a pipe frame 30, a scanning mechanism 40 and a position detection mechanism, in this example, the structures of the bottom plate 10, the synchronizing wheel mounting plate 20, the pipe frame 30, the scanning mechanism 40 and the position detection mechanism are the same as those in the above example, and therefore, the detailed description thereof is omitted in this example. In this example, the transmission mechanism includes a synchronous rotating shaft, the first power device 501 is a first stepping motor, the synchronous rotating shaft is connected with an output shaft of the first stepping motor, the synchronizing wheel 502 is fixed on the synchronous rotating shaft, and is driven by the first stepping motor to rotate, the synchronizing wheel 502 drives the synchronizing wheel 502 to rotate, and the synchronizing wheel 502 drives the synchronous belt 503 to rotate, so as to realize the movement of the pipe frame 30.
As for the barcode scanning device, as shown in fig. 3, the invention also provides an example, the barcode scanning device includes a bottom plate 10, a synchronizing wheel mounting plate 20, a pipe frame 30, a transmission mechanism, a scanning mechanism 40 and a position detection mechanism, wherein the two synchronizing wheel mounting plates 20 are fixedly mounted on the bottom plate 10 in parallel; the transmission mechanism comprises a first power device 501, synchronous wheels 502 and synchronous belts 503, the two synchronous wheel mounting plates 20 are respectively provided with the synchronous wheels 502, the two synchronous wheels 502 are driven by the first power device 501 to rotate, and each synchronous wheel 502 is respectively provided with the synchronous belt 503; the tube rack 30 is used for placing a plurality of test tubes, one end of the tube rack 30 is placed on a synchronous belt 503, and the other end of the tube rack 30 is placed on another synchronous belt 503; the scanning mechanism 40 is arranged on the bottom plate 10, and the scanning mechanism 40 is used for scanning the bar codes of the test tubes on the tube rack 30.
In this example, the transmission mechanism further includes a synchronous rotating shaft 505, a first rotating wheel 506, a second rotating wheel 507, and a transmission belt 508; the first power device 501 is a first stepping motor, and the synchronous rotating shaft 505 is connected with an output shaft of the first stepping motor; the first rotating wheel 506 and the synchronizing wheel 502 are fixed on the same rotating shaft and are respectively installed on two sides of the synchronizing wheel installation plate 20, the second rotating wheel 507 is fixed on the synchronizing rotating shaft 505, and the transmission belt 508 is arranged on the first rotating wheel 506 and the second rotating wheel 507. The first stepping motor drives the synchronous rotating shaft 505 to rotate, the synchronous wheel 502 is driven to rotate through the transmission action of the second rotating wheel 507, the transmission belt 508 and the first rotating wheel 506, and the synchronous wheel 502 drives the synchronous belt 503 to rotate, so that the pipe frame 30 moves. Because pipe support 30 passes through the drive of hold-in range 503 and removes, need not to realize the removal of pipe support 30 through pushing away structures such as frame, therefore pipe support 30 removes more steadily, prevents that the reagent in the test tube from appearing oscillating. In addition, in the present example, the position detection mechanism includes an index code wheel detector 601, an index code wheel 602, and a position sensor 603 in the example of fig. 2, wherein the specific form of the position sensor 603 is not described in detail in the present example; the index code wheel 602 is fixed on the first rotating wheel 506, the index code wheel detector 601 is arranged on one side of the index code wheel 602, and the synchronizing wheel 502 and the first rotating wheel 506 are fixed on the same rotating shaft, so that the rotating angle of the first rotating wheel 506 is the rotating angle of the synchronizing wheel 502. The index code wheel 602 has a plurality of scales, which are through holes provided on the index code wheel 602 in this example, the through holes may be circular through holes, square through holes, etc., and the scales are elongated through holes provided on the index code wheel 602 in this example. The indexing code wheel detector 601 is provided with a signal transmitting end and a signal receiving end, the signal transmitting end and the signal receiving end are respectively positioned on two sides of the indexing code wheel 602, after the indexing code wheel 602 rotates to a set angle, the long strip-shaped through hole is positioned between the signal transmitting end and the signal receiving end, and the signal receiving end receives a signal from the signal transmitting end. Furthermore, the transmission mechanism of the pipe frame 30 further comprises a tension wheel, and the tension wheel is fixed on the synchronous wheel mounting plate 20 and used for tensioning the transmission belt 508. In the scheme, the synchronous wheel 502 is driven to rotate by the rotation of the synchronous rotating shaft 505 and the transmission action of the second rotating wheel 507, the transmission belt 508 and the first rotating wheel 506, and the synchronous wheel 502 drives the synchronous belt 503 to rotate, so that the movement of the pipe frame 30 is realized; through scanning mechanism 40's cooperation, realized the scanning of test tube bar code on the multi-row pipe frame 30, scan or the manual mode that pushes away the pipe support and scan through handheld scanner among the prior art, its degree of automation is high, and the pipe support does not have the human factor at scanning, removal in-process and causes the interference to it, and the pipe support can not appear jolting, and the transmission is steady to the condition of missing sweeping, wrong sweeping can not appear. In this example, the moving speed of the pipe frame 30 can be controlled by designing the diameters of the first rotating wheel 506 and the second rotating wheel 507 so that the rotating speed of the synchronizing wheel 502 and the timing belt 503 becomes slower and the moving speed of the pipe frame 30 becomes slower when the diameter ratio of the first rotating wheel 506 to the second rotating wheel 507 becomes larger while the rotating speed of the first stepping motor is not changed.
On the basis of the example shown in fig. 3, as shown in fig. 4, the present invention further provides an example, in this example, the barcode scanning apparatus includes a bottom plate 10, a synchronizing wheel mounting plate 20, a pipe frame 30, a transmission mechanism, a scanning mechanism 40, and a position detection mechanism, where the structures of the bottom plate 10, the synchronizing wheel mounting plate 20, the pipe frame 30, the transmission mechanism, and the position detection mechanism are the same as those of the example shown in fig. 3, and therefore, no further description is given in this example. As shown in fig. 4, in this example, the scanning mechanism 40 includes a second stepping motor 401, a lead screw 402, a linear guide 403, and a scanner 404, the second stepping motor 401 is fixed on the base plate 10, the lead screw 402 is connected to an output shaft of the second stepping motor 401, the scanner 404 is slidably disposed on the linear guide 403, and the scanner 404 is slidably moved on the linear guide 403 by driving the lead screw 402. Through the structure, after the first pipe frame 30 is placed at the initial position of the synchronous belt 503, the second stepping motor 401 is started to drive the screw rod 402 to rotate, the scanner 404 is provided with a screw rod nut matched with the screw rod 402, the scanner 404 slides along the linear guide rail 403 under the drive of the screw rod 402, and the scanner 404 scans the bar codes of the test tubes on the pipe frame 30. After the scanner 404 finishes scanning the barcode of the test tube on the first tube rack 30, the scanner 404 returns to the original position, specifically, a contact switch may be disposed at the rightmost end of the linear guide rail 403, when the scanner 404 moves to the rightmost end, the contact switch is contacted, the contact switch sends a signal to the control system, the control system sends an instruction to control the second stepping motor 401 to rotate in the reverse direction, the lead screw 402 drives the scanner 404 to return to the original position, similarly, a contact switch may be disposed at the original position, the second stepping motor 401 stops rotating through the contact switch, and the scanner 404 stops at the original position. In addition, during the process of scanning the barcode of the test tube by the scanner 404, if the barcode on the test tube cannot be identified by the scanner 404, the scanner 404 may record the data and feed the data back to the external control system; in addition, outside display device and alarm device electric connection are on control system, control system can show unidentified test tube on display device, perhaps control system can control alarm device and send alarm signal. The bar code scanning device of this example, the removal of its pipe support 30, the removal of scanner 404 have all realized the automation, realized the automated scanning of bar code, compare with the mode that scans through handheld scanner 404 or manually push into pipe support 30 and scan among the prior art, its degree of automation is high, pipe support 30 is scanning, move the in-process and do not have the human factor and cause the interference to it, pipe support 30 can not appear jolting, the transmission is more steady to the condition of missing sweeping, wrong sweeping can not appear. On the basis of the above example, the barcode scanning apparatus further includes a stepping motor driver 70, the stepping motor driver 70 is fixed on the base plate 10, and the stepping motor driver 70 is connected to the first stepping motor and the second stepping motor 401 to control the rotation of the first stepping motor and the second stepping motor 401.
On the basis of any example, as shown in fig. 5, the invention provides an example for the synchronous belt 503, in this example, a plurality of small bosses 5031 for positioning the pipe rack 30 are arranged on the synchronous belt 503, the cross section of each small boss 5031 is square, and the distance between adjacent small bosses 5031 on each synchronous belt 503 is equal; one end of the pipe rack 30 is placed between two adjacent small bosses 5031 on one synchronous belt 503, the other end of the pipe rack 30 is placed between two adjacent small bosses 5031 on the other synchronous belt 503, and the distances between the adjacent pipe racks 30 are equal. In this example, the distance between the adjacent small bosses 5031 is equal to or slightly greater than the width of the pipe rack 30, and when the pipe rack 30 is placed, one end of the pipe rack 30 is just placed between the two small bosses 5031, so that the design of the structure is convenient for positioning the pipe rack 30 and increases the operability of discharging; in addition, the small boss 5031 can protect the gel holder 30 to prevent the liquid from flowing out due to inclination of the holder 30 during accidental collision. Further, in this example, the timing belt 503 is provided with a total of nine small bosses 5031, and a total of eight positions for placing the pipe racks 30 are provided, and corresponding to each pipe rack 30, a position sensor 603 is fixedly mounted on the timing wheel mounting plate 20 for sensing each pipe rack 30. Accordingly, in this example, the index code wheel 602 is an eight-index code wheel, so that when the index code wheel 602 rotates one index every time, the timing belt 503 drives the pipe rack 30 to move a distance between adjacent pipe racks 30, and when the index code wheel 602 rotates one circle, eight positions for placing the pipe rack 30 on the timing belt 503 are placed in the pipe rack 30. It should be noted that the number of the position sensors 603 is adjusted according to the number of the pipe racks 30, when eight pipe racks 30 are arranged on the timing belt 503, the eight position sensors 603 are arranged and fixed at the upper positions of the timing wheel mounting plate 20, and when ten or twelve pipe racks are arranged on the timing belt 503, the ten or twelve position sensors are arranged and fixed at the upper positions of the timing wheel mounting plate 20; in addition, the indexing of the indexing code wheel 602 can also be adjusted according to the number of the position sensors 603, when eight position sensors 603 are provided, the indexing code wheel 602 is an eight-indexing code wheel, and when ten or twelve position sensors are provided, the indexing code wheel is a ten-indexing or twelve-indexing code wheel. When the index code wheel 602 rotates one index, the synchronous belt 503 drives the pipe racks 30 to move a distance between adjacent pipe racks 30, and the position sensor detects the corresponding pipe rack 30, thereby greatly improving the transmission precision of the pipe rack 30.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A barcode scanning device is characterized in that: the device comprises a bottom plate, two synchronizing wheel mounting plates, a pipe frame, a transmission mechanism, a scanning mechanism and a position detection mechanism, wherein the two synchronizing wheel mounting plates are fixedly mounted on the bottom plate in parallel;
the transmission mechanism comprises a first power device, synchronous wheels and synchronous belts, the two synchronous wheel mounting plates are respectively provided with a synchronous wheel, the two synchronous wheels are driven by the first power device to rotate, and each synchronous wheel is respectively provided with a synchronous belt;
the pipe frame is used for placing a plurality of containers, one end of the pipe frame is placed on one synchronous belt, and the other end of the pipe frame is placed on the other synchronous belt;
the position detection mechanism comprises an indexing code disc detector and an indexing code disc with a plurality of scales, the indexing code disc is fixed on the synchronizing wheel, and the indexing code disc detector is used for monitoring the rotation angle of the synchronizing wheel;
the scanning mechanism is arranged on the bottom plate and used for scanning the bar codes of the containers on the pipe frame.
2. The barcode scanning device of claim 1, wherein: the position detection mechanism further comprises a plurality of position sensors, and the position sensors are mounted on the synchronizing wheel mounting plate and used for sensing the position of the pipe support.
3. The barcode scanning device of claim 1, wherein: the transmission mechanism further comprises a synchronous rotating shaft, a first rotating wheel and a transmission belt; the first power device is a first stepping motor, and the synchronous rotating shaft is connected with an output shaft of the first stepping motor; the first rotating wheel and the synchronizing wheel are fixed on the same rotating shaft and are respectively installed on two sides of the synchronizing wheel installation plate, and the transmission belt is arranged on the synchronizing rotating shaft and the first rotating wheel.
4. The barcode scanning device of claim 3, wherein: the transmission mechanism further comprises a second rotating wheel, the second rotating wheel is fixed on the synchronous rotating shaft, and the transmission belt is arranged on the first rotating wheel and the second rotating wheel.
5. The barcode scanning device of claim 3, wherein: the transmission mechanism further comprises a tension wheel, and the tension wheel is fixed on the synchronous wheel mounting plate and used for tensioning the transmission belt.
6. The barcode scanning device of claim 1, wherein: the synchronous belt is provided with a plurality of small bosses for positioning the pipe frame, and the distances between the adjacent small bosses on each synchronous belt are equal.
7. The barcode scanning device of claim 6, wherein: one end of the pipe support is placed between two adjacent small bosses on one synchronous belt, the other end of the pipe support is placed between two adjacent small bosses on the other synchronous belt, and the distances between the adjacent pipe supports are equal.
8. The barcode scanning device of claim 7, wherein: the scale division code disc is an eight-scale division code disc, and when the scale division code disc rotates by one scale division, the synchronous belt drives the pipe support to move by the distance between adjacent pipe supports.
9. The barcode scanning device of claim 1, wherein: the scanning mechanism comprises a second stepping motor, a screw rod, a linear guide rail and a scanner, the second stepping motor is fixed on the bottom plate, the screw rod is connected with an output shaft of the second stepping motor, the scanner is arranged on the linear guide rail in a sliding mode, and the scanner slides on the linear guide rail through the driving of the screw rod.
10. The barcode scanning device according to claim 2 or 9, wherein: the stepping motor driver is fixed on the bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510965771.9A CN106909862B (en) | 2015-12-22 | 2015-12-22 | Bar code scanning device |
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| CN201510965771.9A CN106909862B (en) | 2015-12-22 | 2015-12-22 | Bar code scanning device |
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| CN106909862A CN106909862A (en) | 2017-06-30 |
| CN106909862B true CN106909862B (en) | 2020-02-04 |
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