Tube pneumatic transfer device and tube pneumatic transfer method

Abstract

The application discloses a test tube pneumatic transfer device and a test tube pneumatic transfer method. The transfer device comprises a rack, a single-tube feeding mechanism, a blowing mechanism and a belt conveyor and a guide device connecting the single-tube feeding mechanism and the blowing mechanism. The blowing mechanism comprises a rotary driving mechanism and a rotating block driven to rotate by the rotary driving mechanism. The rotating block is provided with at least two sending channels extending along the axial direction of the rotating block. When any one of the sending channels is docked with the guide device, at least one of the other sending channels is docked with a pair of coaxial upper and lower tube joints. The application can send test tubes to another sending channel when one sending channel sends test tubes, thereby greatly improving the sending efficiency. Meanwhile, the single-tube feeding mechanism and the blowing mechanism are connected through the belt conveyor and the guide device, so that the start-stop frequency of the motor of the single-tube feeding structure is effectively reduced, the use efficiency of the motor is improved, and the motor is better protected.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical equipment, in particular to a test tube pneumatic transfer device and a test tube pneumatic transfer method. BACKGROUND

[0002] For example, the Chinese patent application with publication number CN111661677A discloses a structure capable of moving batches of test tubes one by one to a sending member for sending.

[0003] However, the sending rotating block in this structure has only one sending channel, and when a test tube is sent in the sending channel, the feeding of test tubes to the sending rotating block must be stopped, which greatly affects the sending efficiency.

[0004] At the same time, since the stroke between the feeding member and the sending rotating block is very short, the first motor of the feeding member needs to be frequently started and stopped to cooperate with the action of the sending rotating block, which affects the use efficiency of the feeding member and is not conducive to the protection of the first motor. SUMMARY

[0005] The present application aims to solve the above-mentioned problems in the prior art and provides a test tube pneumatic transfer device and a test tube pneumatic transfer method.

[0006] The purpose of the present application is achieved by the following technical solutions:

[0007] The test tube pneumatic transfer device comprises a rack, a single tube feeding mechanism and a blowing mechanism on the rack, characterized in that the single tube feeding mechanism and the blowing mechanism are connected through a belt conveyor and a material guide, the blowing mechanism comprises a base provided on the rack, the base is provided with a rotary drive mechanism and a rotating block driven to rotate by the rotary drive mechanism, the base is further provided with at least one pair of upper and lower tube joints coaxial and located on both sides of the rotating block in the axial direction, and the rotating block is provided with at least two sending channels extending in the axial direction, when the upper end of any sending channel is connected with the discharge end of the material guide, the other ends of at least one of the other sending channels are connected with the pair of coaxial upper and lower tube joints.

[0008] Preferably, the upper tube joint is provided with a connecting hole for connecting an auxiliary air source.

[0009] Preferably, the upper tube joint comprises a first connecting disc, a group of first bolts are vertically and movably arranged on the first connecting disc, the first bolts are vertically connected to the upper end plate of the base, and a first elastic member is arranged between the head of the first bolt and the first connecting disc to make the upper tube joint and the rotating block self-adaptively close.

[0010] Preferably, the lower pipe joint comprises a second connecting plate, a group of second bolts vertically arranged on the second connecting plate and movable relative to the second connecting plate, the second bolts are vertically connected to the lower end plate of the base, and a second elastic member is arranged between the heads of the second bolts and the second connecting plate to enable the lower pipe joint to be self-adaptively close to the rotating block.

[0011] Preferably, the transmission channels are at least three, and the upper pipe joints and the lower pipe joints are at least two pairs, and when any of the transmission channels is connected to the material guide, part or all of the other transmission channels are respectively connected to a pair of upper pipe joints and lower pipe joints.

[0012] Preferably, a strip-shaped opening is formed on the cover plate above the belt conveyor and faces the conveying surface of the belt conveyor, and the strip-shaped opening extends along the conveying direction of the belt conveyor.

[0013] Preferably, the belt conveyor comprises first pulleys, second pulleys and third pulleys which are equal in height and have parallel axes, two first belts are sleeved on the first pulleys and the second pulleys, the spacing between the two first belts is smaller than the outer diameter of the tube body of the test tube, two second belts are sleeved on the second pulleys and the third pulleys, the spacing between the two second belts is greater than the outer diameter of the tube body and smaller than the outer diameter of the cap of the test tube, a fourth pulley is further arranged below the second pulleys and the third pulleys and between the second pulleys and the third pulleys, two third belts are sleeved on the fourth pulley and the third pulley and located on the inner side of the second belts, the spacing between the two third belts is smaller than the outer diameter of the tube body, and one of the first pulleys, the second pulleys, the third pulleys and the fourth pulley is connected to a conveying motor which drives the rotation of the one of the first pulleys, the second pulleys, the third pulleys and the fourth pulley.

[0014] Preferably, the test tube pneumatic transfer device further comprises a rotating code scanning assembly, the rotating code scanning assembly is used to receive the test tube transferred thereon by the single-tube feeding mechanism, drive the test tube to rotate to read the bar code on the outer wall of the test tube through a code reader, and after the code reader reads the code, make the test tube fall onto the belt conveyor.

[0015] Preferably, the single-tube feeding mechanism comprises a cylindrical storage bin and a rotating feeding mechanism, the rotating feeding mechanism comprises a disc located in the storage bin and a feeding driving device which drives the rotation of the disc, the disc is formed with a group of first arc-shaped grooves and a group of second arc-shaped grooves, the first arc-shaped grooves are arranged around the outer periphery of the second arc-shaped grooves and correspond to the second arc-shaped grooves one by one, the arc length of the first arc-shaped grooves is smaller than the arc length of the second arc-shaped grooves, one end of the first arc-shaped grooves is flush with one end of the second arc-shaped grooves, and a first sensor corresponding to the first arc-shaped grooves and a second sensor corresponding to the second arc-shaped grooves are arranged at the end plate of the storage bin.

[0016] Preferably, the single-tube feeding mechanism comprises a cylindrical storage bin and a rotary feeding mechanism, the rotary feeding mechanism comprises a disc coaxially arranged in the storage bin and a feeding driving device for driving the disc to rotate, the edge of one axial side of the disc is provided with a set of arc-shaped pushers which are evenly distributed in the circumference and extend along the axial direction of the storage bin, a first arc-shaped groove and a second arc-shaped groove are arranged between adjacent arc-shaped pushers, a set of the first arc-shaped grooves are arranged around the outer periphery of the second arc-shaped grooves, and the circle surrounded by the first arc-shaped grooves and the circle surrounded by the second arc-shaped grooves are coaxial with the disc, the arc length of the first arc-shaped groove is smaller than the arc length of the second arc-shaped groove, the first arc-shaped groove and the second arc-shaped groove are flush at one end close to the arc-shaped pusher, a first sensor corresponding to the first arc-shaped groove and a second sensor corresponding to the second arc-shaped groove are arranged at the end plate of the storage bin, the first sensor is located above the second sensor, and the second sensor is used to determine whether there is a test tube on the rotary code scanning assembly.

[0017] The test tube pneumatic transfer method comprises the following steps:

[0018] S1, providing the test tube pneumatic transfer device as any one of the above, and connecting the feeding pipeline and the sending pipeline of the blowing mechanism of the test tube pneumatic transfer device;

[0019] S2, placing the test tube to be sent into the single-tube feeding mechanism of the test tube pneumatic transfer device;

[0020] S3, the single-tube feeding mechanism starts to transfer the test tubes one by one to the belt conveyor;

[0021] S4, the belt conveyor transports a test tube into the sending channel which is connected with the material guide;

[0022] S5, the rotary driving mechanism drives the rotating block to rotate by a predetermined angle, so that the sending channel with the test tube is connected with a pair of upper and lower tube connectors, and another sending channel is connected with the material guide;

[0023] S6, the feeding pipeline supplies air to the sending channel with the test tube, so that the test tube is transferred to the destination through the sending pipeline, and at the same time, the belt conveyor transports a new test tube into the sending channel which is currently connected with the material guide;

[0024] S7, repeating S5-S6.

[0025] The test tube pneumatic transfer method comprises the following steps:

[0026] S10, providing the test tube pneumatic transfer device as any one of the above, and connecting the feeding pipeline and the sending pipeline of the blowing mechanism of the test tube pneumatic transfer device;

[0027] S20, placing the test tube to be sent into the single-tube feeding mechanism of the test tube pneumatic transfer device;

[0028] S30, single tube feeding mechanism starts to move the test tube to the belt conveyor one by one;

[0029] S40, the belt conveyor transports a test tube to the sending channel which is connected with the material guide;

[0030] S50, the rotary drive mechanism drives the rotating block to rotate by a predetermined angle, so that the sending channel with the test tube is connected with a pair of upper and lower tube joints, and another sending channel is connected with the material guide;

[0031] S60, the gas supply pipeline supplies gas to the sending channel with the test tube, so that the test tube leaves the corresponding upper tube joint, and the belt conveyor transports a new test tube to the sending channel which is currently connected with the material guide;

[0032] S70, after determining that there is a new test tube in the sending channel which is currently connected with the material guide and the previous test tube leaves the corresponding upper tube joint, the auxiliary gas source connected with the upper tube joint supplies gas to the previous test tube, so that the previous test tube is transferred to the destination through the sending pipeline; at the same time, the rotary drive mechanism drives the rotating block to rotate, so that the sending channel with the test tube is connected with another pair of upper and lower tube joints, and the sending channel without the test tube is connected with the outlet end of the material guide;

[0033] S80, repeat S50-S70.

[0034] The advantages of the technical scheme of the present application mainly include:

[0035] The rotating block of the present application is provided with at least two sending channels, when one sending channel sends a test tube, a test tube can be transported to another sending channel, which can greatly improve the sending efficiency, and the belt conveyor and the material guide are used to connect the single tube feeding mechanism and the blowing mechanism, which can effectively increase the transportation distance of the test tube, thereby effectively reducing the start-stop frequency of the motor of the single tube feeding mechanism, effectively improving the use efficiency of the motor and providing better protection for the motor.

[0036] The upper tube joint of the present application has a connecting hole connected with the auxiliary gas source, when the auxiliary gas source is connected, the rotating block can rotate during the sending process of one sending channel, so that another sending channel with the test tube rotates towards the upper tube joint, thereby maximizing the sending efficiency and reducing the waiting time.

[0037] The single tube feeding mechanism of the present application adopts two arc-shaped grooves with different lengths, and cooperates with two sensors, when the sensor corresponding to the first arc-shaped groove is blocked, the motor is controlled to stop or reduce the speed, which can adjust the operation of the motor as late as possible, thereby minimizing the acceleration, deceleration or start-stop frequency of the motor.

[0038] The belt machine of the present application can effectively ensure that the test tube is conveyed to the material guide device in a state of the cap facing forward, and a pure mechanical structure is adopted to replace the prior art, that is, the direction of the test tube is recognized by a sensor and the rotation direction of the rotating block is controlled to realize the adjustment of the direction of the test tube, so that a complex control process is not required, the stability is better, and the application is more convenient.

[0039] The present application is provided with at least three sending channels and at least two upper tube joints, so that the rotation stroke of the rotating block can be reduced as much as possible, so as to better cooperate with the sending structure, the feeding structure and the belt machine to improve the sending efficiency, and at the same time, the structure of the plurality of upper tube joints and lower tube joints can connect different sending positions when needed, so that the distribution of the test tube can be realized.

[0040] The present application is provided with a strip-shaped port on the cover plate, which can be used to process the test tube that needs to be blown immediately in advance, so as to meet the needs of emergency.

[0041] The present application is provided with a rotating code scanning mechanism combined with two sending channels, which can determine the sending destination of the test tube through code scanning, so as to effectively realize the sending needs of different purposes, and can determine whether all the test tubes entering the test tube pneumatic transfer device are sent out through code scanning, so as to effectively find the loss of the test tube. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 is a sectional view of the test tube pneumatic transfer device of the present application;

[0043] Figure 2 is a perspective view of the test tube pneumatic transfer device of the present application;

[0044] Figure 3 is a sectional view of the blowing mechanism of the present application;

[0045] Figure 4 is a perspective view of the blowing mechanism of the present application;

[0046] Figure 5 is a perspective view of the belt machine and the rotating code scanning assembly of the present application;

[0047] Figure 6 is Figure 1 an enlarged view of the circular frame area in FIG. 8;

[0048] Figure 7 is Figure 3 an enlarged view of the circular frame area in FIG. 8;

[0049] Figure 8 is a perspective view of the rotating material falling mechanism of the present application;

[0050] Figure 9 is a schematic diagram of the invention's rotary material dropping mechanism with the rollers located at the two ends of the short axis of the annular elliptical groove;

[0051] Figure 10 is a schematic diagram of the invention's rotary material dropping mechanism with the rollers located at the two ends of the long axis of the annular elliptical groove;

[0052] Figure 11 is a perspective view of the invention's single-tube feeding mechanism, with one end of the vertical plate and the feeding driving device that drives the disc to rotate hidden. DETAILED DESCRIPTION

[0053] The purposes, advantages and features of the invention will be illustrated and explained by the following non-limiting description of preferred embodiments. These embodiments are only typical examples of the application of the technical solutions of the invention, and any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of the invention.

[0054] In the description of the schemes, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of description and simplification of the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the invention. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Also, in the description of the schemes, with reference to the operator, the direction close to the operator is the proximal end, and the direction away from the operator is the distal end.

[0055] Example 1

[0056] The test tube pneumatic transfer device disclosed by the invention is described below in conjunction with the drawings, such as the drawings Figure 1 -Appendix Figure 4As shown, it comprises a rack 100, on which a single-tube feeding mechanism 200 and a blowing mechanism 300 are arranged, the single-tube feeding mechanism 200 and the blowing mechanism 300 are connected through a belt conveyor 400 and a material guide 500, the blowing mechanism 300 comprises a base, on which a rotary driving mechanism 303 and a rotating block 301 driven to rotate by the rotary driving mechanism 303 are arranged, the rotating block 301 is located between an upper end plate 306 and a lower end plate 307 of the base, and the axis of the rotating block 301 is perpendicular to the upper end plate 306 and the lower end plate 307, the rotating block 301 is provided with at least two sending channels 302 extending along the axial direction thereof, when the upper end of any one of the sending channels 302 is connected with the discharging end of the material guide 500, at least one of the other sending channels 302 is connected with a pair of coaxial upper pipe joint 304 and lower pipe joint 305, the upper pipe joint 304 is arranged on the upper end plate 306, and the lower pipe joint 305 is arranged on the lower end plate 307 and its axis is parallel to the axis of the rotating block 301.

[0057] Wherein, the specific structure of the single-tube feeding mechanism 200 can adopt the structure of the prior art described in the background art, which will not be repeated here. Of course, the single-tube feeding mechanism 200 can also omit the buffer pawl and the second driving motor driving the buffer pawl in the feeding part of the existing equipment. Alternatively, the single-tube feeding mechanism 200 can also be other feasible structures known.

[0058] As shown in the accompanying drawings, Figure 2 The single-tube feeding mechanism 200 comprises a cylindrical storage bin 201 and a rotary feeding mechanism, the storage bin 201 is enclosed by two parallel vertical plates maintaining a gap and a circular ring plate with a notch arranged between the two vertical plates, the notch of the circular ring plate faces upward and is fixed on one vertical plate, and maintains a small gap with the other vertical plate. The axis of the storage bin 201 extends along the conveying direction of the belt conveyor 400.

[0059] As shown in the accompanying drawings, Figure 1 , and Figure 2As shown, the rotating feeding mechanism comprises a disc 202 coaxially arranged in the storage bin 201 and a feeding driving device 203 driving the disc 202 to rotate, the feeding driving device 203 is preferably a speed reducer motor, and a group of arc-shaped pushers 204 evenly distributed in the circumference and extending along the axial direction of the storage bin 201 are arranged at the edge position of the axial side of the disc 202. When the disc 202 rotates, the arc-shaped pushers 204 roll the test tubes 700 at the bottom of the storage bin 201 along the inner side wall of the storage bin 201, so as to gradually move to the upper part of the storage bin 201 and roll along the supporting block 205 to the belt conveyor 400. The storage bin 201 is provided with an inlet at the vertical plate 206 facing the sending mechanism, and the inlet is provided with a chute 600 on the rack, and the upper end of the chute 600 is connected with the feeding port 102 on the cover plate 101 above the belt conveyor 400.

[0060] As shown in the accompanying drawings, Figure 2 The cover plate 101 is provided with a strip-shaped port 103 opposite to the conveying surface of the belt conveyor 400, the strip-shaped port 103 extends along the conveying direction X of the belt conveyor 400, the width of the cover plate 101 is greater than the diameter of the cap 702 of the test tube 700, and the height difference between the cover plate 101 and the belt conveyor 400 is about 2 times the outer diameter of the tube body, so that the test tube 700 can be effectively dropped onto the belt conveyor 400, and when needed, the test tube 700 can be put into the belt conveyor 400 through the strip-shaped port for conveying.

[0061] The belt conveyor 400 can be a known feasible structure, and as in the prior art, the belt conveyor 400 can also not consider the orientation of the test tube 700 thereon when conveying the test tube 700.

[0062] As shown in the accompanying drawings, Figure 1 , and Figure 5As shown, in the embodiment, the belt machine 400 comprises two parallel vertical plates 401 and the first pulley 402, the second pulley 403 and the third pulley 404 which are arranged in parallel with the same height and axis between the two vertical plates 401. The first pulley 402 is located in the storage bin 201 and close to the end plate of the blowing mechanism 300. The second pulley 403 is located outside the storage bin 201. Two first belts 405 are sleeved on the first pulley 402 and the second pulley 403. The distance between the two first belts 405 is less than the outer diameter of the tube body 701 of the test tube 700. The distance between the second pulley 403 and the third pulley 404 is greater than the length of the test tube 700 and less than twice the length of the test tube 700. Two second belts 406 are sleeved on the second pulley 403 and the third pulley 404. The distance between the two second belts 406 is greater than the outer diameter of the tube body 701 and less than the outer diameter of the cap 702 of the test tube 700.

[0063] As shown in the accompanying drawings, Figure 5 As shown, the fourth pulley 407 is arranged between the second pulley 403 and the third pulley 404. Two third belts 408 are sleeved on the fourth pulley 407 and the third pulley 404 and located inside the second belts 406. The distance between the two third belts 408 is less than the outer diameter of the tube body 701. One of the first pulley 402, the second pulley 403, the third pulley 404 and the fourth pulley 407 is connected with the conveying motor 409 which drives the rotation of the pulley.

[0064] When the test tube 700 moved to the test block 205 by the rotating feeding mechanism falls on the two first belts 405 and is conveyed in a flat state. When the test tube 700 is completely moved to the two second belts 406, the tube body of the test tube 700 will fall below the second belts 406 under the action of gravity because the distance between the two second belts 406 is greater than the outer diameter of the tube body, so that the test tube 700 changes to a vertical state, as shown in the accompanying drawings, Figure 5 At this time, the cap 702 of the test tube 700 is supported on the two second belts 406 for conveying. When the tube body contacts the third belt 408, the area where the third belt 408 contacts the test tube 700 is in an upwardly inclined state. With the continuous forward movement of the test tube 700, the end of the test tube 700 gradually rises under the support of the third belt 408, so that the test tube 700 gradually changes from a vertical state to an inclined state and is output from the belt machine 400, as shown in the accompanying drawings, Figure 5 At this time, the cap 702 of the test tube 700 always maintains a forward state for output.

[0065] The structure of the material guide 500 can be designed as required, as shown in the accompanying drawings, Figure 6As shown, the material guide 500 includes a supporting plate 501, two side plates 502 and a baffle 503, which enclose a guiding channel, the upper end of the guiding channel is opposite to the output end of the belt conveyor 400, the supporting plate 501 is arc-shaped and its upper end is connected to the output end of the belt conveyor 400 and is slightly lower than the output end of the belt conveyor 400. The baffle 503 is opposite to the supporting plate 501 and includes a horizontal section 504, a corner section 505 and a vertical section 506 connected in sequence, the horizontal section 504 is longitudinally distant from the upper end of the supporting plate 501 by not less than 3 times of the outer diameter of the cap 702, the vertical section 506 is horizontally distant from the lower end of the supporting plate 501 by slightly more than the outer diameter of the cap 702 and the upper end of the vertical section 506 is at the same height as the upper end of the supporting plate 501. The two side plates 502 are parallel and are perpendicularly connected to the two sides of the supporting plate 501 and the baffle 503, the distance between the two side plates 502 is slightly greater than the outer diameter of the cap 702 of the test tube 700.

[0066] As shown in the accompanying drawings, Figure 6 The lower ends of the supporting plate 501, the two side plates 502 and the baffle 503 are connected to a connecting disc 507, the axis of the connecting disc 507 is parallel to the axis of the rotating block 301, the connecting disc 507 is formed with a central hole opposite to and communicating with the guiding channel, the central hole can be docked with different delivery channels 302 on the rotating block 301.

[0067] As shown in the accompanying drawings, Figure 3 , the accompanying drawings, Figure 4 , the accompanying drawings, Figure 6 The upper end plate 306 can be provided with a docking disc 308 matched with the connecting disc 507 of the material guide 500, the docking disc 308 has a docking hole and penetrates through the upper end plate, the docking hole can be docked with the upper end of the delivery channel, the upper end plate 306 is connected with the lower end plate 307 through the annular cylinder 319 surrounding the periphery of the rotating block. The lower end plate 307 is the top plate of the gantry 309 provided on the frame.

[0068] The rotating block 301 is located in the annular cylinder 309 and can be a cylinder or a prism, the axis of the rotating block 301 extends along the longitudinal direction Z, of course, in other embodiments, the axis of the rotating block 301 can also be at an acute angle with the horizontal plane, that is, the rotating block 301 is inclined. The rotation driving mechanism 303 driving the rotating block 301 to rotate is provided on the gantry 309 in a known structure, for example, it usually drives the rotating block 301 to rotate through a motor cooperating with a feasible transmission structure or directly through a rotary cylinder, the gantry 309, the upper end plate and the annular cylinder jointly constitute the base.

[0069] The number of sending channels 302 can be designed as needed. When there are two sending channels 302, the arc between the two sending channels 302 can be 45°, 60°, or 90°, etc., instead of 180°. That is, when the sending channel 302 that needs to dock with the feeder 500 is required, the rotating block 301 can rotate forward and backward by 45°, 60°, or 90°, etc.

[0070] When there are three sending channels 302, their axes are equidistant from the axis of the rotating block and they divide the circumference equally. Here, the arc between two adjacent sending channels 302 is 120°. Of course, in another embodiment, the arc between two adjacent sending channels 302 may not be 120°, for example, it may be 45° or 60°. When it is necessary to switch the sending channel 302 that is connected to the feeder 500, the rotating block 301 can also be rotated forward and backward by 45° or 60°.

[0071] The number of sending channels 302 is preferably 4-6. The distance from the axis of the multiple sending channels 302 to the axis of the rotating block is equal and they are evenly arranged in a circle. There are at least two upper pipe joints 304. The number of lower pipe joints 305 is the same as the number of upper pipe joints 304 and corresponds one-to-one. When any of the sending channels 302 is connected to the feeder 500, some or all of the other sending channels 302 are connected to the upper pipe joints 304 one by one.

[0072] As attached Figure 1 Appendix Figure 3 As shown, when there are four sending channels 302 and two upper pipe joints 304, when one sending channel 302 is connected to the feeder 500, the two sending channels 302 located on both sides of the sending channel 302 are connected to the two upper pipe joints 304 respectively, and the remaining sending channel 302 is neither connected to the feeder 500 nor to the upper or lower pipe joints 305.

[0073] As attached Figure 4 Appendix Figure 7As shown, to address the issue of test tubes 700 failing to continue being blown into the delivery pipeline (not shown) when the rotating block 301 rotates, each upper pipe connector 304 is provided with a connection hole 310 for connecting an auxiliary air source, and an auxiliary air source connector 311 is provided at the connection hole 310. When a test tube 700 is added to an empty delivery channel 302, and it is confirmed that the previous test tube 700 has left the rotating block 301 and entered the delivery pipeline (not shown), the rotating block 301 can be driven to rotate without waiting for the test tube 700 to be delivered to its destination. This is because the auxiliary air source connected to the auxiliary air source connector 311 can drive the test tubes 700 in the delivery pipeline to continue being delivered. A rigid or flexible pipe 318 is inserted into the upper end of each upper pipe connector 310.

[0074] Because there is continuous rotation between the rotating block 301 and the upper pipe joint 304 and the lower pipe joint 305, gaps will appear between them due to wear after long-term use, which will lead to air leakage during blowing and thus affect the stability of blowing.

[0075] As attached Figure 3 Appendix Figure 7 As shown, the upper pipe connector 304 passes through the upper end plate and includes a first connecting plate 312 located above the upper end plate. A set of first bolts 313 are vertically and movably disposed on the first connecting plate 312. The first bolts 313 are vertically connected to the upper end plate 306. A first elastic element 314 is disposed between the head of the first bolt 313 and the first connecting plate 312 to make the upper pipe connector 304 adaptively and tightly fit with the rotating block 301. The first elastic element 314 is a spring fitted on the first bolt 313.

[0076] As attached Figure 3 As shown, the sealing structure of the lower pipe joint 305 and the rotating block 302 is the same as the sealing connection structure of the upper pipe joint and the rotating block. That is, the lower pipe joint 305 passes through the lower end plate and includes a second connecting plate 315 located below the lower end plate. A set of second bolts 316 are vertically arranged on the second connecting plate 315 and can move relative to it. The second bolts 316 are vertically connected to the upper end plate 306. A second elastic element 317 is provided between the head of the second bolt 316 and the second connecting plate 315 to make the lower pipe joint 305 and the rotating block 301 adaptively fit tightly. The second elastic element 317 is a spring fitted on the second bolt 316.

[0077] When wear occurs, the first elastic element 314 and the second elastic element 317 can move the upper pipe joint 304 and the lower pipe joint 305 toward the rotating block 301, thereby ensuring that the upper and lower pipe joints 305 and the rotating block 301 remain sealed and preventing air leakage.

[0078] The test tube pneumatic transfer device also includes a control device. The control device can combine the signals from sensors installed at each designated location with the set control program to control the entire test tube pneumatic transfer device to work automatically. The corresponding control technology is known and will not be described in detail here.

[0079] Example 2

[0080] This embodiment is further improved based on Embodiment 1 above as follows:

[0081] As attached Figure 1 As shown, a rotary barcode scanning assembly 800 is also provided at the storage compartment 201. The rotary barcode scanning assembly 800 is used to receive the test tubes 700 transferred to it by the single tube feeding mechanism and drive the test tubes 700 to rotate so that the barcode on the outer wall of the test tubes 700 can be read by the barcode reader 801. After the barcode is read by the barcode reader 801, the test tubes 700 on it fall onto the belt conveyor 400.

[0082] As attached Figure 1 As shown, the rotating barcode scanning assembly 800 includes a rotating feeding mechanism 802 and a barcode reader 801. The rotating feeding mechanism 802 is used to receive the test tubes 700 transferred to it by the single tube feeding mechanism and drive the test tubes 700 to rotate so that the barcode reader 801 can read the barcode on the outer wall of the test tubes 700.

[0083] As attached Figure 1 As shown, the barcode reader is positioned above the storage compartment and aligned with the notch in the annular plate.

[0084] As attached Figure 8 As shown, the rotating feeding mechanism 802 includes two parallel rotating rollers 803 of equal height. The axes of the two rotating rollers 803 are parallel to the axis of the storage bin 201. The two rotating rollers 803 are located inside the storage bin 201 and directly above the two first belts 405. Each rotating roller 803 is rotatably mounted on a bracket 804. Each bracket 804 is also equipped with a motor 805. Each motor 805 is connected to the rotating roller 803 on the same bracket 804 via a transmission belt 806 and drives the rotating roller 803 to rotate.

[0085] As attached Figure 8 -Appendix Figure 10As shown, two said supports 804 are connected with a distance adjusting mechanism, the distance adjusting mechanism comprises rollers 807 arranged at the bottom of two said supports 804, the axis of said rollers 807 extends along the longitudinal direction Z, two said rollers 807 rollingly arrange in the annular elliptical groove 809 opened on the top surface of the driving disc 808, said driving disc 808 is arranged on the bottom plate 813 which is arranged on the vertical plate 206, at the same time, the bottom of said driving disc 808 is connected with the distance adjusting driving motor 810 which drives the self-rotation of said driving disc 808, at the same time, two shaft sleeves 811 are arranged on each support 804, the shaft sleeves 811 on two supports 804 are one-to-one corresponding, the guide shaft 812 is inserted into the coaxial two shaft sleeves 811. Said belt conveyor 400 is located above said driving disc 808 and between two said supports 804. When the motor drives the self-rotation of said driving disc 808, two said rollers 807 roll along said annular elliptical groove 809, in a state as shown in FIG. 8A, two said rollers 807 are located at the two ends of the minor axis of said annular elliptical groove 809, at this time, the distance between two said rollers 803 is the smallest and is smaller than the outer diameter of the tube body 102 of said test tube 700, so that the test tube 700 can be held between two said rollers 803. Figure 9 As shown in FIG. 8B, when said driving disc 808 rotates 90°, two said rollers 807 are located at the two ends of the major axis of said annular elliptical groove 809, at this time, the distance between two said rollers 803 is the largest and is larger than the outer diameter of the tube body 102 of said test tube 700, so that the test tube 700 can fall from between two said rollers 803. Figure 10

[0086] When working, said rotating loading mechanism 4 moves said test tube 700 one by one to two said rollers 803, then two said motors 805 drive the self-rotation of said rollers 803 to drive the rotation of said test tube 700, said code reader 801 reads the bar code on the outer wall of said test tube 700 to obtain the corresponding data of each test tube 700, after reading the code, the destination to which each test tube 700 is to be sent can be determined, so that in subsequent sending, the sending channel 302 into which said test tube 700 enters can be docked with the upper and lower tube joints 305 connected with different sending pipelines, so as to realize zoned sending. After completing the code scanning, said distance adjusting mechanism makes the distance between two said rollers larger than the outer diameter of the cap 702 of said test tube 700, so that said test tube 700 falls into said belt conveyor 400 located below said rollers.

[0087] As shown in FIG. 9A, when said belt conveyor 400 is in the state of FIG. 9A, the distance between two said rollers 803 is the smallest and is smaller than the outer diameter of the tube body 102 of said test tube 700, so that the test tube 700 can be held between two said rollers 803. Figure 11 ​As shown, a first arc-shaped groove 207 and a second arc-shaped groove 208 are arranged between adjacent arc-shaped plectrums 204, a group of the first arc-shaped grooves 207 are arranged around the outer periphery of the second arc-shaped groove 208, and the circle surrounded by the first arc-shaped grooves 207 and the circle surrounded by the second arc-shaped groove 208 are coaxial with the disc 202, the arc length of the first arc-shaped groove 207 is smaller than that of the second arc-shaped groove 208, the first arc-shaped groove 207 and the second arc-shaped groove 208 are flush with one end of the arc-shaped plectrum 204, a first sensor 209 corresponding to the first arc-shaped groove 207 and a second sensor 210 corresponding to the second arc-shaped groove 208 are arranged at the end plate of the storage bin 201, the first sensor 209 is located above the second sensor 210, the second sensor 210 is used to determine whether there is a test tube 700 on the rotating code scanning assembly 800, and the first sensor 209 and the second sensor 210 are preferably a pair of sensors.

[0088] When two test tubes 700 on the rotating code scanning assembly 800 are being read, the signal of the second sensor 210 is cut off, the second sensor 210 has no detection signal, and the first sensor 209 has a detection signal, when the disc 202 rotates to the first arc-shaped groove 207 corresponding to the first sensor 209 and the first arc-shaped groove 207 completely passes through the first sensor 209 (that is, the first sensor 209 is located on the right side of the first arc-shaped groove 207), at this time, if the test tubes 700 on the two rollers are still not successfully read, the first sensor 209 and the second sensor 210 have no signal, at this time, the motor needs to be adjusted to reduce the rotating speed of the disc 202 or stop the rotating of the disc 202, so that the test tubes 700 on the rollers have time to complete the code scanning. If the first sensor 209 changes from having a signal to having no signal, it is determined that the test tubes 700 on the rollers are successfully scanned and fall to the lower side of the rollers (the second sensor 210 has a signal), at this time, the motor does not need to be adjusted, so that the motor can be more accurately controlled, and the number of start-stop or acceleration-deceleration of the motor is reduced.

[0089] Embodiment 3

[0090] The embodiment discloses a test tube pneumatic transfer method, comprising the following steps:

[0091] S1, providing a test tube pneumatic transfer device as in the above embodiments, and connecting the gas supply pipeline and the sending pipeline of the test tube pneumatic transfer device, that is, connecting the rigid pipes or flexible pipes connected to the two upper pipe joints to the two sending pipelines respectively, and connecting the two lower pipe joints to the gas supply pipeline respectively.

[0092] S2, the test tube 700 to be sent into the chute 600, the test tube 700 from the chute 600 into the storage bin; in the test tube 700 into the chute 600, can be through artificial test tube 700 from the hopper import pour, can also make the test tube pneumatic transfer device chute 600 import and the loading belt conveyor 400 link, blood personnel can diameter test tube 700 placed on the loading belt conveyor 400, by the loading belt conveyor 400 test tube 700 is sent to the hopper.

[0093] S3, when determining that the storage bin 201 has test tube 700, the lifting motor of the rotary feeding mechanism 4 starts to drive the disc to rotate, so that the arc-shaped finger on the disc moves the test tube 700 from the lower part of the storage bin 201 to the upper part of the storage bin 201 and to the belt conveyor 400. When determining whether the storage bin has test tube 700, a sensor can be arranged in the storage bin to achieve this. The corresponding technology is known and will not be described here.

[0094] S4, the belt conveyor 400 starts to move the test tube 700 falling onto it towards the blowing mechanism 300 and makes a test tube 700 enter the sending channel 302 which is in butt joint with the material guide 500.

[0095] S5, after determining that a test tube enters the sending channel 302, the rotary driving mechanism 303 starts to drive the rotating block 301 to rotate by a predetermined angle, so that the sending channel 302 with the test tube 700 is in butt joint with a pair of upper and lower pipe joints 304, and another sending channel 302 is in butt joint with the material guide 500.

[0096] S6, the gas supply pipeline supplies gas to the sending channel 302 with the test tube 700, so that the test tube 700 is transferred to the destination through the sending pipeline connected with the sending channel, and at the same time, the belt conveyor 400 transports a new test tube 700 into the sending channel 302 which is currently in butt joint with the material guide 500.

[0097] S7, repeat S5-S6.

[0098] Further, when the transfer device has a rotating code scanning assembly 800, in S3, the rotary feeding mechanism 4 moves the test tube 700 onto two rotating rollers 803, the rotating rollers 803 rotate to drive the test tube 700 to rotate, and at the same time, the code scanner 801 scans the code. After the scanning is completed, the distance adjusting driving motor 810 starts to drive the disc to rotate by 90°. At this time, the two rotating rollers 803 move away from each other, and the distance between them increases, so that the test tube 700 falls onto the two first belts 405 below the rotating rollers 803 for transportation.

[0099] Embodiment 4

[0100] The embodiment discloses a test tube pneumatic transfer method, comprising the following steps:

[0101] S10, providing a test tube pneumatic transfer device as described above, and connecting the air supply pipeline and the sending pipeline of the blowing mechanism 300 of the test tube pneumatic transfer device.

[0102] S20, placing a test tube 700 to be sent into the single-pipe feeding mechanism 200 of the test tube pneumatic transfer device.

[0103] S30, the single-pipe feeding mechanism 200 starts to transfer the test tubes 700 one by one to the belt conveyor 400.

[0104] S40, the belt conveyor 400 transports the test tubes 700 to the blowing mechanism, and makes a test tube 700 enter the sending channel 302 that is in butt joint with the material guide.

[0105] S50, when it is determined that there is a test tube in the sending channel 302 that is in butt joint with the material guide, the rotary driving mechanism 303 starts to drive the rotating block 301 to rotate by a predetermined angle (when there are four sending channels, the rotating block rotates by 90° each time) so that the sending channel 302 with the test tube 700 is in butt joint with a pair of upper and lower pipe joints 304, 305, and another sending channel 302 is in butt joint with the material guide 500.

[0106] S60, the air supply pipeline supplies air to the sending channel 302 with the test tube 700 so that the test tube 700 leaves the corresponding upper pipe joint and is blown into the sending pipeline for transportation, and meanwhile, the belt conveyor 400 transports a new test tube 700 to the sending channel 302 that is currently in butt joint with the material guide 500.

[0107] S70, when it is determined that there is a new test tube in the sending channel 302 that is currently in butt joint with the material guide 500, and after the previous test tube leaves the corresponding upper pipe joint, the air supply pipeline connected to the lower pipe joint of the previous test tube stops supplying air, and the auxiliary air source connected to the upper pipe joint 304 of the previous test tube starts to supply air so that the previous test tube continues to be transported in the sending pipeline and reaches the destination; meanwhile, the rotary driving mechanism 303 starts to drive the rotating block 301 to rotate (both forward rotation and reverse rotation are possible) so that the sending channel 302 with the new test tube 700 is in butt joint with a pair of upper and lower pipe joints 304, 305, and another sending channel 302 without the test tube 700 is in butt joint with the material guide 500.

[0108] S80, repeating S50-S70.

[0109] When the transfer device has the rotary code scanning assembly, the rotating direction of the sending block can be controlled according to the information identified by the code scanning so that the test tube entering the sending channel is in butt joint with the synchronized sending pipeline.

[0110] The present application has various embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present application.

Claims

1. Apparatus for pneumatically transferring test tubes, comprising a frame having a single tube feed mechanism and a blow mechanism thereon, characterised in that: The single-tube feeding mechanism is connected with the blowing mechanism through a belt conveyor and a material guide, the blowing mechanism comprises a base arranged on a rack, a rotating driving mechanism and a rotating block driven to rotate by the rotating driving mechanism are arranged on the base, at least one pair of upper and lower tube joints coaxial and located on both sides of the rotating block in the axial direction are arranged on the base, at least two sending channels extending in the axial direction of the rotating block are arranged on the rotating block, when the upper end of any sending channel is connected with the discharge end of the material guide, the two ends of at least one of the other sending channels are connected with the coaxial upper and lower tube joints, a rotating code scanning assembly is further arranged, the rotating code scanning assembly is used for receiving the test tube moved to the rotating code scanning assembly by the single-tube feeding mechanism and driving the test tube to rotate to read the bar code on the outer wall of the test tube through a code reader, and after the code reader reads the code, the test tube on the rotating code scanning assembly falls on the belt conveyor, the single-tube feeding mechanism comprises a cylindrical storage bin and a rotating feeding mechanism, the rotating feeding mechanism comprises a disc coaxially arranged in the storage bin and a feeding driving device driving the disc to rotate, a group of arc-shaped flippers evenly distributed in the circumferential direction and extending in the axial direction of the storage bin are arranged at the edge position of one side of the disc in the axial direction, a first arc-shaped groove and a second arc-shaped groove are arranged between adjacent arc-shaped flippers, a group of the first arc-shaped grooves are arranged around the outer periphery of the second arc-shaped groove, and the circle surrounded by the first arc-shaped grooves and the circle surrounded by the second arc-shaped groove are coaxial with the disc, the arc length of the first arc-shaped groove is smaller than the arc length of the second arc-shaped groove, the first arc-shaped groove and the second arc-shaped groove are flush at one end close to the arc-shaped flippers, a first sensor corresponding to the first arc-shaped groove and a second sensor corresponding to the second arc-shaped groove are arranged at the end plate of the storage bin, the first sensor is located above the second sensor, and the second sensor is used for determining whether there is a test tube on the rotating code scanning assembly.

2. The test tube pneumatic transfer device of claim 1, wherein: The upper tube joint is provided with a connecting hole for connecting an auxiliary air source.

3. The test tube pneumatic transfer device of claim 1, wherein: The upper tube joint comprises a first connecting disc, a group of first bolts are vertically and movably arranged on the first connecting disc, the first bolts are vertically connected to the upper end plate of the base, and a first elastic member for adaptively tightly connecting the upper tube joint and the rotating block is arranged between the head of the first bolt and the first connecting disc.

4. The test tube pneumatic transfer device of claim 1, wherein: The lower tube joint comprises a second connecting disc, a group of second bolts are vertically and movably arranged on the second connecting disc, the second bolts are vertically connected to the lower end plate of the base, and a second elastic member for adaptively tightly connecting the lower tube joint and the rotating block is arranged between the head of the second bolt and the second connecting disc.

5. The test tube pneumatic transfer device of claim 1, wherein: The sending channels are at least three, and the upper and lower tube joints are at least two pairs, when any sending channel is connected with the material guide, part or all of the other sending channels are respectively connected with a pair of upper and lower tube joints.

6. The test tube pneumatic transfer device of claim 1, wherein: A strip-shaped opening opposite to the conveying surface of the belt conveyor is formed in the cover plate above the belt conveyor, and the strip-shaped opening extends along the conveying direction of the belt conveyor.

7. The test tube pneumatic transfer device of claim 1, wherein: The belt machine comprises first, second and third pulleys with equal height and parallel axes, two first belts are sleeved on the first and second pulleys, the interval between the two first belts is smaller than the outer diameter of the tube body of the test tube, two second belts are sleeved on the second and third pulleys, the interval between the two second belts is larger than the outer diameter of the tube body and smaller than the outer diameter of the cap of the test tube, a fourth pulley is further arranged below the second and third pulleys and between them, two third belts are sleeved on the fourth and third pulleys and located inside the second belts, the interval between the two third belts is smaller than the outer diameter of the tube body, and one of the first, second, third and fourth pulleys is connected with a conveying motor for driving the self-rotation thereof.

8. A method of pneumatic transfer of test tubes, characterized by: The method comprises the following steps: S1, providing the test tube pneumatic transfer device according to any one of claims 1-7, and connecting the air supply pipeline and the sending pipeline of the blowing mechanism of the test tube pneumatic transfer device; S2, placing the test tube to be sent into the single-tube feeding mechanism of the test tube pneumatic transfer device; S3, starting the single-tube feeding mechanism to transfer the test tubes one by one to the belt machine; S4, the belt machine conveying a test tube to the sending channel that is connected with the guide; S5, starting the rotary drive mechanism to drive the rotation block to rotate by a predetermined angle, so that the sending channel with the test tube is connected with a pair of upper and lower tube joints, and another sending channel is connected with the guide; S6, the air supply pipeline supplies air to the sending channel with the test tube, so that the test tube is transferred to the destination through the sending pipeline, and the belt machine conveys a new test tube to the sending channel that is currently connected with the guide; S7, repeating S5-S6.

9. A method of pneumatically transferring test tubes, characterized by: The method comprises the following steps: S10, providing the test tube pneumatic transfer device according to any one of claims 1-7, and connecting the air supply pipeline and the sending pipeline of the blowing mechanism of the test tube pneumatic transfer device; S20, placing the test tube to be sent into the single-tube feeding mechanism of the test tube pneumatic transfer device; S30, starting the single-tube feeding mechanism to transfer the test tubes one by one to the belt machine; S40, the belt machine conveying a test tube to the sending channel that is connected with the guide; S50, starting the rotary drive mechanism to drive the rotation block to rotate by a predetermined angle, so that the sending channel with the test tube is connected with a pair of upper and lower tube joints, and another sending channel is connected with the guide; S60, the air supply pipeline supplies air to the sending channel with the test tube, so that the test tube is transferred to the destination through the sending pipeline, and the belt machine conveys a new test tube to the sending channel that is currently connected with the guide; S70, after determining that there is a new test tube in the sending channel that is currently connected with the guide and the previous test tube is separated from the corresponding upper tube joint, the auxiliary air source connected with the upper tube joint of the previous test tube supplies air, so that the previous test tube is transferred to the destination through the sending pipeline; at the same time, the rotary drive mechanism drives the rotation block to rotate, so that the sending channel with the test tube is connected with another pair of upper and lower tube joints, and a sending channel without a test tube is connected with the outlet end of the guide; S80, repeating S50-S70.

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