Pipette head split charging device

Abstract

The utility model discloses a pipette head subpackaging device, which relates to the technical field of pipettes and comprises a feeding mechanism, a forward mechanism and a material inserting mechanism which are communicated in sequence, and the feeding mechanism can convey to-be-subpackaged pipette heads to the forward mechanism; the forward mechanism comprises a slide way, the slide way is obliquely arranged downwards from the feeding mechanism to the inserting mechanism, and a guide seam is formed in the slide way in the extending direction of the slide way, so that the gun heads conveyed by the feeding mechanism can be kept in a suspension state with the thin ends facing downwards in the guide seam and slide to the inserting mechanism along the guide seam; the material inserting mechanism comprises a support and a material taking part, an X-direction moving assembly is arranged on the lower portion of the support, and a gun head box can be placed on the X-direction moving assembly. A Y-direction moving assembly is arranged on the upper portion of the support, and a Z-direction moving assembly is arranged on the Y-direction moving assembly. The material taking part is arranged on the Z-direction moving assembly and can pick up or release the gun heads conveyed by the forward mechanism so that the gun heads can be inserted into corresponding gun head insertion holes in the gun head box.

Description

Technical Field

[0001] This utility model relates to the field of pipette technology, and in particular to a pipette tip dispensing device. Background Technology

[0002] Most pipette tips sold on the market are packaged in resealable bags. Operators need to manually remove the loose tips from the resealable bags, adjust their orientation (thicker at the top and thinner at the bottom), and then insert them vertically into the corresponding size holes in the tip box.

[0003] However, manual dispensing of pipette tips is not only tedious and time-consuming, but also easily causes operator fatigue due to prolonged repetitive operation. During the dispensing process, issues such as unstable handling and improper installation of the pipette tips may occur, leading to contamination of the pipette tips and thus affecting the accuracy of experimental results.

[0004] Currently, although large-scale factory production lines can mass-produce pre-installed gun tip boxes, the large size of the production equipment and the fixed specifications of consumables make it difficult to meet the research needs of laboratories for small-batch, multi-batch, and flexible replacement. Utility Model Content

[0005] The purpose of this invention is to provide a pipette tip dispensing device to solve the problems existing in the above-mentioned related technologies. It can automatically load pipette tips into the tip box with high dispensing accuracy and save manual labor.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model provides a pipette tip dispensing device, including a feeding mechanism, a forwarding mechanism and an inserting mechanism connected in sequence. The feeding mechanism can transport the pipette tip to be dispensed to the forwarding mechanism.

[0008] The forward mechanism includes a slide, which is inclined downward from the feeding mechanism to the inserting mechanism. A guide slit is provided in the slide along its extension direction. The width of the guide slit matches the diameter of the thick end of the gun head, so that the gun head conveyed by the feeding mechanism can maintain a suspended state with the thin end facing downward in the guide slit and slide along the guide slit to the inserting mechanism.

[0009] The inserting mechanism includes a support and a picking-up part. The lower part of the support is provided with an X-direction moving component. The X-direction moving component can hold the gun head box and can drive the gun head box to move along the X direction.

[0010] The upper part of the bracket is provided with a Y-axis moving component, and the Y-axis moving component is provided with a Z-axis moving component, which can drive the Z-axis moving component to move along the Y direction.

[0011] The material picking unit is disposed on the Z-direction moving component. The Z-direction moving component can drive the material picking unit to move along the Z direction, and the material picking unit can pick up or release the gun head conveyed by the forward mechanism so as to insert it into the corresponding gun head insertion hole in the gun head box.

[0012] Preferably, the feeding mechanism includes a connecting plate, a feeding plate, a push plate, a fixing plate, and a lifting assembly. Two connecting plates are vertically arranged, and the feeding plate, the push plate, and the fixing plate are sequentially arranged between the two connecting plates. The feeding plate is an inclined plate, and the push plate and the fixing plate are both vertical plates.

[0013] The nozzle inlet end of the slide is fixed to the upper part of the fixed plate, and the top edge of the fixed plate extends along the slide; the lifting assembly can drive the push plate to lift and lower, so that the push plate and the fixed plate form a stepped structure, thereby conveying the nozzle on the loading plate to the slide.

[0014] Preferably, the lifting assembly includes a cylinder, the output end of which is connected to the push plate and can drive the push plate to lift.

[0015] Preferably, the bracket includes a first support plate, a second support plate, and a rectangular frame. The first support plate and the second support plate are respectively vertically fixed to a set of side edges extending along the X direction of the rectangular frame. The nozzle outlet end of the slide is fixed to the upper part of the first support plate. The X-axis moving component is disposed within the rectangular frame, and the Y-axis moving component is disposed between the first support plate and the second support plate, and located above the X-axis moving component.

[0016] Preferably, the X-direction moving component includes a first lead screw, a first limiting rod, a first moving block, and a first motor. The first lead screw and the first limiting rod both extend along the X direction, and are arranged side by side along the Y direction between a set of sides of the rectangular frame extending along the Y direction. The first moving block has a first threaded hole and a first limiting hole extending along the X direction. The first moving block is threaded to the first lead screw through the first threaded hole and slidably connected to the first limiting rod through the first limiting hole.

[0017] The output end of the first motor is connected to the first lead screw, and the first motor can drive the first lead screw to rotate, so as to move the first moving block along the X direction; the first moving block is used to place the gun head box.

[0018] Preferably, the Y-axis moving component includes a second lead screw, a second limiting rod, a second moving block, and a second motor. The second lead screw and the second limiting rod both extend along the Y direction, and are arranged side by side along the Z direction between the first support plate and the second support plate. The second moving block has a second threaded hole and a second limiting hole extending along the Y direction. The second moving block is threaded to the second lead screw through the second threaded hole and slidably connected to the second limiting rod through the second limiting hole.

[0019] The output end of the second motor is connected to the second lead screw, and the second motor can drive the second lead screw to rotate, so as to move the second moving block along the Y direction; the Z-direction moving component is disposed on the second moving block.

[0020] Preferably, the Z-axis moving component includes a rack, a gear, and a third motor. A groove is provided on the second moving block along the Z-direction, and the rack is slidably connected in the groove. The gear is mounted on the second moving block and meshes with the rack. The output end of the third motor is connected to the gear, and the third motor can drive the gear to rotate, thereby moving the rack along the Z-direction. The material picking part is disposed on the second moving block.

[0021] Preferably, the inserting mechanism further includes an object detection sensor, which is disposed on the second moving block near the picking part, and is used to detect whether the picking part picks up the gun head.

[0022] Preferably, the forward mechanism further includes a vibrator disposed on the outer wall of the slide to cause the gun head in the slide to vibrate and slide down.

[0023] Preferably, the material picking unit includes a suction head, which is a tubular structure that can be inserted into the gun head, and the suction head is connected to an air pump to pick up the gun head.

[0024] This utility model achieves the following technical advantages compared to related technologies:

[0025] The pipette tip dispensing device provided by this utility model includes a feeding mechanism, a forwarding mechanism, and an inserting mechanism connected in sequence. The forwarding mechanism includes a slide, and the inserting mechanism includes a support and a picking part. In use, the pipette tip to be dispensed is transported to the forwarding mechanism by the feeding mechanism, so that the pipette tip falls into the guide slot of the slide. The guide slot keeps the pipette tip in a suspended state with the thin end facing down and slides to the inserting mechanism. Then, the pipette tip box is moved along the X direction to near the pipette tip by the X-axis moving component of the support. The picking part is moved along the Y and Z directions by the Y and Z-axis moving components of the support, respectively, so that the picking part is aligned with the pipette tip and picks up the pipette tip. The pipette tip is then inserted into the corresponding pipette tip insertion hole in the pipette tip box and released. This operation is repeated until the pipette tip box is completely filled with pipette tips, realizing automatic dispensing of pipette tips with high dispensing accuracy and saving manual labor. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the working state of the pipette tip dispensing device provided in this embodiment of the utility model;

[0028] Figure 2 A schematic diagram of the forward mechanism provided in an embodiment of this utility model;

[0029] Figure 3 A schematic diagram of the feeding mechanism provided in an embodiment of this utility model;

[0030] Figure 4 An enlarged view of the suction head provided in an embodiment of this utility model;

[0031] Figure 5 This is a schematic diagram of the inserting mechanism provided in an embodiment of the present utility model.

[0032] In the diagram: 01-gun head, 02-gun head box, 1-feeding mechanism, 101-connecting plate, 102-feeding plate, 103-push plate, 104-fixed plate, 2-forward mechanism, 201-slide rail, 202-guide slot, 203-vibrator, 3-insertion mechanism, 301-suction head, 302-first support plate, 303-second support plate, 304-rectangular frame, 305-first lead screw, 306-first limit rod, 307-first moving block, 308-first motor, 309-second lead screw, 310-second limit rod, 311-second moving block, 312-second motor, 313-rack, 314-gear, 315-object detection sensor. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] The purpose of this invention is to provide a pipette tip dispensing device to solve the problems existing in related technologies. It can automatically load pipette tips into the tip box with high dispensing accuracy and save manual labor.

[0035] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] like Figure 1 As shown, this embodiment provides a pipette tip dispensing device, including a feeding mechanism 1, a forward mechanism 2, and a inserting mechanism 3 connected in sequence.

[0037] In this embodiment, the feeding mechanism 1 can convey the gun head 01 to be packaged to the forwarding mechanism 2; such as Figure 2 As shown, the forward mechanism 2 includes a slide 201, which is inclined downward from the feeding mechanism 1 to the insertion mechanism 3. A guide slit 202 is provided in the slide 201 along its extension direction. The width of the guide slit 202 matches the diameter of the thick end of the gun head 01, so that the gun head 01 conveyed by the feeding mechanism 1 can maintain a suspended state with the thin end facing downward in the guide slit 202 and slide along the guide slit 202 to the insertion mechanism 3.

[0038] Furthermore, the forward mechanism 2 also includes a vibrator 203, which is disposed on the outer wall of the slide 201 to cause the gun head 01 in the slide 201 to vibrate and slide down.

[0039] In this embodiment, as Figure 3 As shown, the feeding mechanism 1 includes a connecting plate 101, a feeding plate 102, a push plate 103, a fixed plate 104, and a lifting assembly. Two connecting plates 101 are vertically arranged. The feeding plate 102, the push plate 103, and the fixed plate 104 are arranged sequentially between the two connecting plates 101. The feeding plate 102 is an inclined plate, while the push plate 103 and the fixed plate 104 are both vertical plates. The nozzle inlet end of the slide 201 is fixed to the upper part of the fixed plate 104, and the top edge of the fixed plate 104 extends along the slide 201. The lifting assembly can drive the push plate 103 to rise and fall, so that the push plate 103 and the fixed plate 104 form a stepped structure, thereby conveying the nozzle 01 on the feeding plate 102 to the slide 201.

[0040] Furthermore, the lifting assembly includes a cylinder, the output end of which is connected to the push plate 103 and can drive the push plate 103 to lift. For the lifting of the push plate 103, in addition to pneumatic drive, an electric drive method using a motor and a gear and rack transmission mechanism can also be used.

[0041] It should be noted that in this embodiment, there are two push plates 103 and two fixing plates 104, for a total of four plates. These four plates are named as plate 1, plate 2, plate 3, and plate 4 in the direction from the feeding plate 102 to the slide rail 201. In use, the gun head 01 is placed on the feeding plate 102. Because the feeding plate 102 is tilted towards plate 1, the gun head 01 on the feeding plate 102 rolls towards plate 1, causing plate 1 to move up and down. When plate 1 is at its lowest position, plate 1... The upper side of the plate is flush with the feeding plate 102. The gun head 01 on the feeding plate 102 rolls to the upper side of plate 1. When plate 1 is at its highest position, the upper side of plate 1 is flush with the upper side of plate 2. Since plate 1 is tilted towards plate 2, the gun head 01 on plate 1 can roll onto plate 2. Similarly, plate 3 moves up and down, pushing the gun head 01 on plate 2 onto plate 4. Since plate 4 is tilted towards slide 201, the gun head 01 on plate 4 can roll into slide 201.

[0042] In this embodiment, the insertion mechanism 3 includes a support and a picking-up part. The lower part of the support is provided with an X-axis moving component, on which the gun head box 02 can be placed and moved along the X direction. The upper part of the support is provided with a Y-axis moving component, on which a Z-axis moving component is provided and moved along the Y direction. The picking-up part is located on the Z-axis moving component, which moves along the Z direction and can pick up or release the gun head 01 conveyed by the forward mechanism 2, so that it is inserted into the corresponding gun head 01 insertion hole in the gun head box 02. Specifically, as shown... Figure 4As shown, the material handling unit includes a suction head 301, which is a tubular structure and can be inserted into the gun head 01. The suction head 301 is connected to an air pump to pick up the gun head 01.

[0043] Specifically, the X, Y, and Z directions are perpendicular to each other.

[0044] In this embodiment, as Figure 5 As shown, the bracket includes a first support plate 302, a second support plate 303, and a rectangular frame 304. The first support plate 302 and the second support plate 303 are respectively vertically fixed to a set of side edges extending along the X direction of the rectangular frame 304. The nozzle outlet end of the slide 201 is fixed to the upper part of the first support plate 302. The X-axis moving component is disposed inside the rectangular frame 304, and the Y-axis moving component is disposed between the first support plate 302 and the second support plate 303, and is located above the X-axis moving component.

[0045] In this embodiment, the X-direction moving component includes a first lead screw 305, a first limiting rod 306, a first moving block 307, and a first motor 308. The first lead screw 305 and the first limiting rod 306 both extend along the X direction, and are arranged side by side along the Y direction between a set of side edges of the rectangular frame 304 extending along the Y direction. The first moving block 307 has a first threaded hole and a first limiting hole passing through it along the X direction. The first moving block 307 is threadedly connected to the first lead screw 305 through the first threaded hole and slidably connected to the first limiting rod 306 through the first limiting hole. The output end of the first motor 308 is connected to the first lead screw 305, and the first motor 308 can drive the first lead screw 305 to rotate, thereby moving the first moving block 307 along the X direction. The first moving block 307 is used to place the gun head box 02.

[0046] In this embodiment, the Y-axis moving component includes a second lead screw 309, a second limiting rod 310, a second moving block 311, and a second motor 312. The second lead screw 309 and the second limiting rod 310 both extend along the Y direction, and are arranged side by side along the Z direction between the first support plate 302 and the second support plate 303. The second moving block 311 has a second threaded hole and a second limiting hole extending along the Y direction. The second moving block 311 is threaded to the second lead screw 309 through the second threaded hole and slidably connected to the second limiting rod 310 through the second limiting hole. The output end of the second motor 312 is connected to the second lead screw 309, and the second motor 312 can drive the second lead screw 309 to rotate, thereby moving the second moving block 311 along the Y direction. The Z-axis moving component is disposed on the second moving block 311.

[0047] In this embodiment, the Z-axis moving component includes a rack 313, a gear 314, and a third motor. A groove is provided on the second moving block 311 along the Z-direction, and the rack 313 is slidably connected in the groove. The gear 314 is mounted on the second moving block 311 and meshes with the rack 313. The output end of the third motor is connected to the gear 314, and the third motor can drive the gear 314 to rotate, thereby driving the rack 313 to move along the Z-direction. The material handling part is provided on the second moving block 311.

[0048] In this embodiment, the inserting mechanism 3 further includes an object detection sensor 315, which is disposed on the second moving block 311 near the picking part. The object detection sensor 315 is used to detect whether the picking part picks up the gun head 01. Specifically, the object detection sensor 315 in this embodiment is preferably a photoelectric sensor. If the picking part does not pick up the gun head 01, the inserting action is not performed.

[0049] The working principle of the pipette tip dispensing device provided in this embodiment is as follows:

[0050] Connect the power supply, pour the nozzle 01 onto the loading plate 102, and start the device; the two push plates 103 alternately rise and fall, pushing the nozzle 01 on the loading plate 102 into the slide rail 201, so that all the nozzles 01 are arranged downwards through the slide rail 201. At the same time, due to the inclined setting of the slide rail 201 and the vibration of the vibrator 203 installed on the slide rail 201, the nozzle 01 can slide downwards to the suction head 301 of the insertion mechanism 3; after the nozzle 01 slides down to the bottom of the suction head 301, it moves in the Z direction. The component moves the suction head 301 downwards, inserting it into the nozzle 01. Air is drawn in by the air pump, causing the suction head 301 to hold the nozzle 01. Then, the X-axis and Y-axis moving components move the suction head 301 above the first nozzle insertion hole in the nozzle box 02. The air pump stops drawing air, causing the suction head 301 to release the nozzle 01 and insert it into the first nozzle insertion hole. This process is repeated until the nozzle box 02 is completely filled with nozzles 01, at which point the device automatically stops operating.

[0051] It should be noted that this device uses a programmable controller (Arduino Nano V3.0) and precision sensors for collaborative control, combined with an innovative mechanical structure design, to achieve fully automatic pushing, sorting and precise insertion of the nozzle 01, saving labor costs and avoiding contamination of the nozzle 01.

[0052] It should be noted that although this device can only be used with one type of nozzle 01, its small size and low cost (less than 1,000 yuan) mean that multiple units can be purchased in the laboratory to accommodate different types of nozzles for packaging and operation.

[0053] The performance parameters of this device are shown in the table below:

[0054]

[0055] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A pipette tip dispensing device, characterized in that: It includes a feeding mechanism, a forwarding mechanism, and an inserting mechanism connected in sequence. The feeding mechanism can transport the gun heads to be packaged to the forwarding mechanism. The forward mechanism includes a slide, which is inclined downward from the feeding mechanism to the inserting mechanism. A guide slit is provided in the slide along its extension direction. The width of the guide slit matches the diameter of the thick end of the gun head, so that the gun head conveyed by the feeding mechanism can maintain a suspended state with the thin end facing downward in the guide slit and slide along the guide slit to the inserting mechanism. The inserting mechanism includes a support and a picking-up part. The lower part of the support is provided with an X-direction moving component. The X-direction moving component can hold the gun head box and can drive the gun head box to move along the X direction. The upper part of the bracket is provided with a Y-axis moving component, and the Y-axis moving component is provided with a Z-axis moving component, which can drive the Z-axis moving component to move along the Y direction. The material picking unit is disposed on the Z-direction moving component. The Z-direction moving component can drive the material picking unit to move along the Z direction, and the material picking unit can pick up or release the gun head conveyed by the forward mechanism so as to insert it into the corresponding gun head insertion hole in the gun head box.

2. The pipette tip dispensing device according to claim 1, characterized in that: The feeding mechanism includes a connecting plate, a feeding plate, a push plate, a fixing plate, and a lifting assembly. Two connecting plates are vertically arranged. The feeding plate, the push plate, and the fixing plate are sequentially arranged between the two connecting plates. The feeding plate is an inclined plate, and the push plate and the fixing plate are both vertical plates. The nozzle inlet end of the slide is fixed to the upper part of the fixed plate, and the top edge of the fixed plate extends along the slide; the lifting assembly can drive the push plate to lift and lower, so that the push plate and the fixed plate form a stepped structure, thereby conveying the nozzle on the loading plate to the slide.

3. The pipette tip dispensing device according to claim 2, characterized in that: The lifting assembly includes a cylinder, the output end of which is connected to the push plate and can drive the push plate to lift.

4. The pipette tip dispensing device according to claim 1, characterized in that: The bracket includes a first support plate, a second support plate, and a rectangular frame. The first support plate and the second support plate are respectively vertically fixed to a set of side edges extending along the X direction of the rectangular frame. The nozzle outlet end of the slide is fixed to the upper part of the first support plate. The X-axis moving component is disposed inside the rectangular frame, and the Y-axis moving component is disposed between the first support plate and the second support plate, and is located above the X-axis moving component.

5. The pipette tip dispensing device according to claim 4, characterized in that: The X-direction moving component includes a first lead screw, a first limiting rod, a first moving block, and a first motor. The first lead screw and the first limiting rod both extend along the X direction, and are arranged side by side along the Y direction between a set of sides of the rectangular frame extending along the Y direction. The first moving block has a first threaded hole and a first limiting hole extending along the X direction. The first moving block is threaded to the first lead screw through the first threaded hole and slidably connected to the first limiting rod through the first limiting hole. The output end of the first motor is connected to the first lead screw, and the first motor can drive the first lead screw to rotate, so as to drive the first moving block to move along the X direction; The first movable block is used to place the gun head box.

6. The pipette tip dispensing device according to claim 4, characterized in that: The Y-axis moving component includes a second lead screw, a second limiting rod, a second moving block, and a second motor. The second lead screw and the second limiting rod both extend along the Y direction and are arranged side by side along the Z direction between the first support plate and the second support plate. The second moving block has a second threaded hole and a second limiting hole extending along the Y direction. The second moving block is threaded to the second lead screw through the second threaded hole and slidably connected to the second limiting rod through the second limiting hole. The output end of the second motor is connected to the second lead screw, and the second motor can drive the second lead screw to rotate, so as to drive the second moving block to move along the Y direction; The Z-axis moving component is disposed on the second moving block.

7. The pipette tip dispensing device according to claim 6, characterized in that: The Z-axis moving component includes a rack, a gear, and a third motor. A groove is provided on the second moving block along the Z direction, and the rack is slidably connected in the groove. The gear is mounted on the second moving block and meshes with the rack. The output end of the third motor is connected to the gear, and the third motor can drive the gear to rotate, thereby moving the rack along the Z direction. The material picking part is provided on the second moving block.

8. The pipette tip dispensing device according to claim 7, characterized in that: The inserting mechanism also includes an object detection sensor, which is located on the second moving block near the picking part. The object detection sensor is used to detect whether the picking part picks up the gun head.

9. The pipette tip dispensing device according to claim 1, characterized in that: The forward mechanism also includes a vibrator, which is disposed on the outer wall of the slide to cause the gun head in the slide to vibrate and slide down.

10. The pipette tip dispensing device according to claim 1, characterized in that: The material handling unit includes a suction head, which is a tubular structure that can be inserted into the gun head. The suction head is connected to an air pump to pick up the gun head.

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