Automatic rotating needle suction device

Abstract

The automatic rotating needle suction device of the present invention comprises: a needle suction mechanism, which is plate-shaped, and has arranged and distributed suction nozzles on the first plane of the needle suction mechanism, and the suction nozzles are used to suck the sample needle and position the sample needle; a rotating mechanism, which is connected to the needle suction mechanism and is used to drive the needle suction mechanism to flip up and down; a Z-direction motion mechanism, which is used to drive the needle suction mechanism to move up and down, and a Y-direction motion mechanism, which is used to drive the needle suction mechanism to move left and right. The automatic rotating needle suction device can grab and position the fallen sample needle by suction, and then flip it, release the suction, so that the sample needle falls accurately into the needle box. The device can reduce the error rate in the collection process and improve the collection efficiency.

Description

Technical Field

[0001] The invention relates to the field of collecting and packaging sample adding needles, and in particular to an automatic rotating needle aspirating device. Background Art

[0002] Disposable sample needles are commonly used consumables in clinical testing medical equipment. In the process of using automatic sample needle equipment for sample needle experiments, disposable sample needles are often used for liquid distribution and transfer. Disposable sample needles are usually made of plastic materials through mold injection. Existing disposable sample needles are mostly bagged and in a disordered state. In this way, the disposable sample needles are easily squeezed and deformed during transportation. At the same time, during the experiment, the instrument operator needs to manually load the bulk disposable sample needles into the needle box, which is labor-intensive, inefficient, and easy to cause pollution.

[0003] In view of the above situation, some disposable sample needle automatic collection devices have emerged, which directly drop the injection molded sample needles into the needle box through the needle drop plate and the catheter for collection. However, during the use of such devices, the sample needles still tilt when they fall and cannot fall accurately into the needle box. Therefore, there is still a need to improve the disposable sample needle automatic collection device. Summary of the invention

[0004] Based on this, it is necessary to provide an automatic rotating needle suction device, which can grab and position the fallen sampling needle through suction, and then flip it over and release the suction so that the sampling needle falls accurately into the needle box. This device can reduce the error rate in the collection process and improve the collection efficiency.

[0005] To achieve the above object, the present invention provides an automatic rotating needle suction device, which adopts the following technical solutions:

[0006] An automatic rotating needle suction device is characterized in that it includes: a needle suction mechanism, which is in the shape of a plate, and a first plane of the needle suction mechanism is provided with arranged and distributed suction nozzles, and the suction nozzles are used to suck up the sample needle and position the sample needle; a rotating mechanism, which is connected to the needle suction mechanism and is used to flip the needle suction mechanism up and down; a Z-direction motion mechanism, which is used to drive the needle suction mechanism to move up and down, and a Y-direction motion mechanism, which is used to drive the needle suction mechanism to move left and right.

[0007] Furthermore, a negative pressure adapter connected to the suction nozzle is provided on the second plane of the needle suction mechanism, and the negative pressure adapter is connected to the negative pressure device to provide suction force for the suction nozzle to suck the sample addition needle.

[0008] Furthermore, the rotating mechanism includes a swinging cylinder, a first rotating support shaft, a second rotating support shaft, a rotating bearing seat, a cylinder seat and a first mounting plate, the first mounting plate is vertically arranged on the rear side of the needle suction mechanism, the cylinder seat is mounted on one end of the first mounting plate, the rotating bearing seat is mounted on the other end of the first mounting plate, the swinging cylinder is fixedly mounted on the cylinder seat, one end of the first rotating support shaft is connected to the output end of the swinging cylinder, and the other end is connected to the needle suction mechanism, one end of the second rotating support shaft is connected to the needle suction mechanism, and the other end is connected to the rotating bearing seat through a bearing, when the swinging cylinder moves, the rotating mechanism can drive the needle suction mechanism to perform up and down flipping movements.

[0009] Furthermore, the rotating mechanism also includes a limiting device, which is composed of a limiting block and a limiting head arranged on the limiting block, and the limiting device includes an upper rotation limiting device and a lower rotation limiting device. The upper rotation limiting device is arranged above the upper surface of the needle suction mechanism when it is horizontal, and is used to limit the downward flipping of the needle suction mechanism. The lower rotation limiting device is arranged below the lower surface of the needle suction mechanism when it is horizontal, and is used to limit the upward flipping of the needle suction mechanism.

[0010] Furthermore, two of the upper rotation limit devices and the lower rotation limit devices are respectively provided on the left and right sides of the first mounting plate.

[0011] Furthermore, the spacing between the suction nozzles is an integer multiple of the center distance between adjacent needle holes in the needle box, and the suction nozzles are arranged in the left and right areas of the needle suction mechanism, and each area is provided with two rows and four columns, for a total of 8 suction nozzles.

[0012] Furthermore, the Z-axis motion mechanism includes a second mounting plate, a gear, a rack and a motor, the rack is vertically mounted on the back of the first mounting plate, the second mounting plate is provided with an opening for accommodating the gear, and Z guide rails are respectively provided on the left and right sides, and a Z-axis slider cooperating with the Z guide rail is provided on the back of the first mounting plate, the gear and the rack are meshed with each other, and the output shaft of the motor is axially connected with the gear. When the motor is driven, it drives the gear to rotate, the gear drives the rack to move up and down, and the rack drives the first mounting plate to move up and down along the Z guide rail.

[0013] Furthermore, the Y-axis motion mechanism includes a linear cylinder, a cylinder push block, a Y-guide rail and a third mounting plate. The Y-guide rail is horizontally mounted on the third mounting plate. A fixed block is slidably connected to the Y-guide rail. The fixed block is connected to the second mounting plate. The cylinder push block is fixedly mounted on the third mounting plate and connected to the output end of the linear cylinder. When the linear cylinder is driven, it drives the cylinder push block, and the cylinder push block drives the second mounting plate to move left and right along the Y-guide rail.

[0014] Furthermore, the Y-direction motion mechanism also includes a Y-direction limiting mechanism, which is fixedly mounted on the third mounting plate and located on both sides of the Y-direction moving range of the second mounting plate. Two Y-direction limiting mechanisms are provided on each side for limiting the second mounting plate in the Y-direction.

[0015] The present invention also provides a sample adding needle collecting device, characterized in that it comprises the above-mentioned automatic rotating needle aspirating device.

[0016] Compared with the prior art, the automatic rotating needle suction device of the present invention comprises: a needle suction mechanism, which is plate-shaped, and has arranged and distributed suction nozzles on the first plane of the needle suction mechanism, and the suction nozzles are used to suck the sample needle and position the sample needle; a rotating mechanism, which is connected to the needle suction mechanism and is used to drive the needle suction mechanism to flip up and down; a Z-direction motion mechanism, which is used to drive the needle suction mechanism to move up and down, and a Y-direction motion mechanism, which is used to drive the needle suction mechanism to move left and right. The automatic rotating needle suction device can grab and position the fallen sample needle by suction, and then flip it over, release the suction, and make the sample needle fall accurately into the needle box. The device can reduce the error rate in the collection process and improve the collection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a structural schematic diagram of an automatic rotating needle suction device according to an embodiment;

[0019] Figure 2 It is a schematic diagram of the exploded structure of an automatic rotating needle suction device according to one embodiment;

[0020] Figure 3 A schematic diagram of the back structure of an automatic rotating needle suction device according to an embodiment;

[0021] Figure 4 A schematic diagram of the working state structure of an automatic rotating needle suction device according to an embodiment;

[0022] Figure 5 It is a schematic structural diagram of a needle box according to an embodiment.

[0023] Among them, 100-automatic rotating needle suction device, 110-needle suction mechanism, 111-suction nozzle, 112-negative pressure adapter, 120-rotation mechanism, 121-swing cylinder, 122-first rotation support shaft, 123-second rotation support shaft, 124-rotation bearing seat, 125-bearing, 126-cylinder seat, 127-first mounting plate, 130-Z-direction motion mechanism, 131-second mounting plate, 132-gear, 133-rack, 134-motor, 135- Z-direction guide rail, 136-Z-direction slider, 137-Z-direction limit block, 140-Y-direction motion mechanism, 141-linear cylinder, 142-cylinder push block, 143-Y-direction guide rail, 144-third mounting plate, 145-fixed block, 146-Y-direction limit mechanism, 150-rotation limit device, 151-limit block, 152-limit head, 153-rotation upper limit device, 154-rotation lower limit device, 160-needle box, 161-needle hole position, 162-sample adding needle. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present invention clearer, the embodiments of the present invention will be further described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0026] like Figure 1 As shown, an automatic rotating needle suction device 100 includes: a needle suction mechanism 110, which is in the shape of a plate, and a first plane of the needle suction mechanism 110 is provided with arranged and distributed suction nozzles 111, and the suction nozzles 111 are used to suck up the sample needle 162 and position the sample needle 162; a rotating mechanism 120, and the rotating mechanism 120 is connected to the needle suction mechanism 110, and is used to drive the needle suction mechanism 110 to flip up and down; a Z-direction motion mechanism 130, which is used to drive the needle suction mechanism 110 to move up and down, and a Y-direction motion mechanism 140, which is used to drive the needle suction mechanism 110 to move left and right.

[0027] The automatic rotating needle suction device can be used in a sample needle collection device, solving the problems of high error rate and low collection efficiency in the sample needle collection process in the prior art. The automatic rotating needle suction device can grab and position the fallen sample needle by suction, then flip it over and release the suction, so that the sample needle falls accurately into the needle box. The device can reduce the error rate in the collection process and improve the collection efficiency.

[0028] Specifically, Figure 2 As shown, a negative pressure adapter 112 connected to the suction nozzle 111 is provided on the second plane of the needle suction mechanism 110, and the negative pressure adapter 112 is connected to the negative pressure device, and is used to provide the suction nozzle 111 with suction force to suck the sample needle 162. When the sample needle falls onto the first plane of the needle suction mechanism 110, the sample needle is just sheathed outside the suction nozzle 111, and the negative pressure device is turned on, and the suction force provided by the negative pressure device allows the sample needle to be firmly sucked by the suction nozzle 111, so that the sample needle can be grasped by the needle suction mechanism 110 and accurately positioned.

[0029] Specifically, Figure 2 As shown, the rotating mechanism 120 includes a swing cylinder 121, a first rotating support shaft 122, a second rotating support shaft 123, a rotating bearing seat 124, a cylinder seat 126 and a first mounting plate 127, wherein the first mounting plate 127 is vertically arranged on the rear side of the needle suction mechanism 110, the cylinder seat 126 is mounted on one end of the first mounting plate 127, the rotating bearing seat 124 is mounted on the other end of the first mounting plate 127, the swing cylinder 121 is fixedly mounted on the cylinder seat 126, one end of the first rotating support shaft 122 is connected to the output end of the swing cylinder 121, and the other end is connected to the needle suction mechanism 110, one end of the second rotating support shaft 123 is connected to the needle suction mechanism 110, and the other end is connected to the rotating bearing seat 124 through a bearing 125, when the swing cylinder 121 moves, the rotating mechanism 120 can drive the needle suction mechanism 110 to perform up and down flipping movements. It can be understood that the rotating mechanism 120 is located on the horizontal central axis of the needle suction mechanism 110, and the movement of the swing cylinder 121 drives the first rotating support shaft 122 and the second rotating support shaft 123, thereby driving the needle suction mechanism 110 to perform a 180° up and down flip movement.

[0030] Furthermore, if Figure 2As shown, the rotating mechanism 120 also includes a limiting device, which is composed of a limiting block 151 and a limiting head 152 arranged on the limiting block. The limiting device includes a rotation upper limit device 153 and a rotation lower limit device 154. The rotation upper limit device 153 is arranged above the upper surface of the needle suction mechanism 110 when it is horizontal, and is used to limit the downward flipping of the needle suction mechanism 110. The rotation lower limit device 154 is arranged below the lower surface of the needle suction mechanism 110 when it is horizontal, and is used to limit the upward flipping of the needle suction mechanism. It can be understood that when the needle-suction mechanism 110 flips over to the point where the first plane is facing downward, the limit head of the rotating upper limit device 153 contacts the second plane of the needle-suction mechanism to prevent the needle-suction mechanism 110 from over-rotating, allowing the needle-suction mechanism 110 to accurately flip over 180°; when the needle-suction mechanism 110 flips back to the point where the first plane is facing upward, the limit head of the rotating lower limit device 154 contacts the second plane of the needle-suction mechanism to prevent the needle-suction mechanism 110 from over-rotating, allowing the needle-suction mechanism 110 to accurately flip over 180°.

[0031] Furthermore, if Figure 2 As shown, two upper rotation limit devices 153 and lower rotation limit devices 154 are respectively provided on the left and right sides of the first mounting plate 127. The upper rotation limit devices 153 and the lower rotation limit devices 154 are arranged horizontally symmetrically to ensure that the needle suction mechanism 110 can achieve a 180° accurate flip, so that the position of the sample adding needle is accurate during the needle receiving and needle placing process, and the error rate is reduced.

[0032] Specifically, Figure 1 , Figure 4 and Figure 5As shown, the spacing of the suction nozzles 111 is an integer multiple of the center distance of adjacent pinhole positions 161 in the needle box 160, and the suction nozzles 111 are arranged in the left and right areas of the needle suction mechanism 110, and each area is respectively provided with two rows and four columns, with a total of 8 suction nozzles. It can be understood that the arrangement of the suction nozzles 111 on the needle suction mechanism 110 corresponds to the pinhole positions 161 of the needle box 160, so that the sample needle 162 can accurately fall into the pinhole position 161 after the needle suction mechanism 110 is turned over. Since the pinhole positions 161 of the needle box 160 are closely spaced, if the sample needles are closely spaced, the plastic sample needles are prone to mutual interference when they fall, which will increase the error rate. Therefore, the spacing of the suction nozzles 111 is an integer multiple of the center distance of adjacent pinhole positions 161 in the needle box 160, so that the distance between the sample needles can be expanded when they fall, avoiding mutual interference and reducing the error rate. For example, the spacing of the suction nozzles 111 is set to twice the center distance of adjacent pinhole positions 161, so that the sample needles can be placed in the needle box in an odd-numbered manner. That is, the sample needles are first placed in the odd-numbered columns 1, 3, 5, and 7 of rows A and B of the needle box, and the automatically rotating needle suction device 100 then moves in the Y direction. The sample needles are then aligned with the even-numbered columns 2, 4, 6, and 8 of rows A and B of the needle box to complete one movement. The needle box is then driven by a drive motor (not shown) to move in the X direction to the position of rows C and D, and enters the next position, and this cycle is repeated to fill the needle box.

[0033] like Figure 1-2 As shown, the Z-axis motion mechanism 130 includes a second mounting plate 131, a gear 132, a rack 133 and a motor 134. The rack 133 is vertically mounted on the back of the first mounting plate 127. The second mounting plate 131 is provided with an opening for accommodating the gear 132, and Z guide rails 135 are respectively arranged on the left and right sides. The back of the first mounting plate 127 is provided with a Z-axis slider 136 that cooperates with the Z guide rail 135. The gear 132 and the rack 133 are meshed with each other. The output shaft of the motor 134 is axially connected to the gear 132. When the motor 134 is driven, it drives the gear 132 to rotate, the gear 132 drives the rack 133 to move up and down, and the rack 133 drives the first mounting plate 127 to move up and down along the Z guide rail 135. The Z-axis motion mechanism 130 realizes the smooth up and down movement of the needle suction mechanism. When the needle suction mechanism needs to suck the sample needle, the motor 134 of the Z-axis motion mechanism 130 is reversed, and the rack 133 drives the needle suction mechanism 110 to move upward to the Z-axis limit block to stop, which is conducive to smooth needle connection; when the needle suction mechanism needs to release the sample needle, the motor 134 of the Z-axis motion mechanism 130 rotates forward, and the rack 133 drives the needle suction mechanism 110 to move downward to the set position, which is conducive to smoothly placing the sample needle into the needle box.

[0034] like Figure 1-2As shown, the Y-direction motion mechanism 140 includes a linear cylinder 141, a cylinder push block 142, a Y-direction guide rail 143 and a third mounting plate 144. The Y-direction guide rail 143 is horizontally mounted on the third mounting plate 144. A fixed block 145 is slidably connected to the Y-direction guide rail 143. The fixed block 145 is connected to the second mounting plate 131. The cylinder push block 142 is fixedly mounted on the third mounting plate 144 and connected to the output end of the linear cylinder 141. When the linear cylinder 141 is driven, the cylinder push block 142 is driven, and the cylinder push block 142 drives the second mounting plate 131 to move left and right along the Y-direction guide rail. The Y-direction motion mechanism drives the needle suction mechanism to move left and right, so that the sample needles fall into the needle box alternately at intervals to avoid interference between the sample needles.

[0035] Furthermore, if Figure 2 As shown, the Y-direction motion mechanism 140 also includes a Y-direction limiting mechanism 146, which is fixedly mounted on the third mounting plate 144 and located on both sides of the Y-direction moving range of the second mounting plate 131, and two Y-direction limiting mechanisms 146 are provided on each side for limiting the Y-direction position of the second mounting plate 131. By providing the Y-direction limiting mechanism, the Y-direction movement of the needle suction mechanism can be precisely controlled so that the suction nozzle is aligned with the needle hole position of the needle box.

[0036] In another embodiment, a sampling needle collection device includes the automatic rotating needle suction device of any of the above embodiments. The sampling needle collection device can provide an automated collection operation after the sampling needle is ejected from the mold, can reduce the error rate, and improve the collection efficiency, thereby improving the intelligence level of the sampling needle collection device.

[0037] The above-mentioned embodiments only express several embodiments of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. An automatic rotating needle suction device, characterized in that: include: A needle suction mechanism, the needle suction mechanism is plate-shaped, and a first plane of the needle suction mechanism is provided with arranged and distributed suction nozzles, the suction nozzles are used to suck the sample needle and position the sample needle; a rotating mechanism, the rotating mechanism is connected to the needle suction mechanism, and is used to drive the needle suction mechanism to flip up and down; a Z-direction motion mechanism is used to drive the needle suction mechanism to move up and down, and a Y-direction motion mechanism is used to drive the needle suction mechanism to move left and right; The rotating mechanism also includes a limiting device, which is composed of a limiting block and a limiting head arranged on the limiting block, and the limiting device includes a rotation upper limiting device and a rotation lower limiting device, the rotation upper limiting device is arranged above the upper surface of the needle-sucking mechanism when it is horizontal, and is used to limit the downward flipping of the needle-sucking mechanism, and the rotation lower limiting device is arranged below the lower surface of the needle-sucking mechanism when it is horizontal, and is used to limit the upward flipping of the needle-sucking mechanism; The spacing between the suction nozzles is an integral multiple of the center distance between adjacent needle holes in the needle box.

2. The automatic rotating needle suction device according to claim 1, characterized in that: A negative pressure adapter connected to the suction nozzle is provided on the second plane of the needle suction mechanism. The negative pressure adapter is connected to the negative pressure device and is used to provide suction force for the suction nozzle to suck the sample addition needle.

3. The automatic rotating needle suction device according to claim 1, characterized in that: The rotating mechanism includes a swinging cylinder, a first rotating support shaft, a second rotating support shaft, a rotating bearing seat, a cylinder seat and a first mounting plate, the first mounting plate being vertically arranged at the rear side of the needle suction mechanism, the cylinder seat being mounted on one end of the first mounting plate, the rotating bearing seat being mounted on the other end of the first mounting plate, the swinging cylinder being fixedly mounted on the cylinder seat, one end of the first rotating support shaft being connected to the output end of the swinging cylinder, and the other end being connected to the needle suction mechanism, one end of the second rotating support shaft being connected to the needle suction mechanism, and the other end being connected to the rotating bearing seat through a bearing, and when the swinging cylinder moves, the rotating mechanism can drive the needle suction mechanism to perform up and down flipping movements.

4. The automatic rotating needle suction device according to claim 3, characterized in that: The rotation upper limit device and the rotation lower limit device are respectively provided with two on the left and right sides of the first mounting plate.

5. The automatic rotating needle aspiration device according to claim 1, characterized in that: The suction nozzles are arranged in the left and right areas of the needle suction mechanism, and each area is respectively provided with two rows and four columns, with a total of 8 suction nozzles.

6. The automatic rotating needle aspiration device according to claim 3, characterized in that: The Z-direction motion mechanism includes a second mounting plate, a gear, a rack and a motor. The rack is vertically mounted on the back of the first mounting plate. The second mounting plate is provided with an opening for accommodating the gear, and Z guide rails are respectively arranged on the left and right sides. A Z-direction slider cooperating with the Z guide rail is provided on the back of the first mounting plate. The gear and the rack are meshed with each other. The output shaft of the motor is axially connected with the gear. When the motor is driven, it drives the gear to rotate, the gear drives the rack to move up and down, and the rack drives the first mounting plate to move up and down along the Z guide rail.

7. The automatic rotating needle aspiration device according to claim 6, characterized in that: The Y-axis motion mechanism includes a linear cylinder, a cylinder push block, a Y-axis guide rail and a third mounting plate. The Y-axis guide rail is horizontally mounted on the third mounting plate. A fixed block is slidably connected to the Y-axis guide rail. The fixed block is connected to the second mounting plate. The cylinder push block is fixedly mounted on the third mounting plate and connected to the output end of the linear cylinder. When the linear cylinder is driven, it drives the cylinder push block, and the cylinder push block drives the second mounting plate to move left and right along the Y-axis guide rail.

8. The automatic rotating needle aspiration device according to claim 7, characterized in that: The Y-direction motion mechanism also includes a Y-direction limiting mechanism, which is fixedly mounted on the third mounting plate and located on both sides of the Y-direction moving range of the second mounting plate. Two Y-direction limiting mechanisms are provided on each side for limiting the second mounting plate in the Y direction.

9. A sample collection device, characterized in that: An automatic rotating needle aspiration device comprising any one of claims 1 to 8.

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