Device for assisting pipettor module to withdraw TIP head

Abstract

The device comprises a fixed seat, a connecting plate and a clamping plate, the fixed seat is used for being fixed to a barrel opening of a TIP head waste barrel, the connecting plate is vertically arranged and arranged in the front-back direction, the lower end of the connecting plate is arranged on the fixed seat, the clamping plate is horizontally arranged and arranged at the upper end of the connecting plate in the front-back direction, and the clamping plate is fixedly connected with the fixed seat. The right portion of the clamping plate protrudes out of the upper end of the connecting plate rightwards, clamping openings are vertically formed in the right side face of the clamping plate, the clamping openings are used for being located above a barrel opening and clamped outside a vertical casing pipe of a pipettor module retreating TIP head, and the multiple clamping openings are arranged at intervals front and back. When the pipettor module fails to retreat the TIP head, the device can assist the pipettor module to retreat the TIP head, and frequent error reporting caused by failure of retreating the TIP head of an automatic workstation is avoided, so that stable operation of the automatic workstation is ensured, and the complexity of cooperative operation of technicians is liberated.

Description

Technical Field

[0001] The present invention relates to the technical field of forensic biochemical testing, in particular to the technical field of forensic biochemical testing automated workstation, and specifically refers to a device for assisting a pipette module in removing a TIP head. Background Art

[0002] Forensic biochemical examination is to evaluate the physiological and pathological state of the human body by testing the chemical components in biological samples such as blood, urine, body fluids, such as enzymes, proteins, sugars, fats, electrolytes, etc. It is of great significance in forensic medicine and can help determine the cause of death, degree of injury, poisoning, etc.

[0003] At present, in the field of forensic biochemical testing, the application of automated workstations has become relatively common. Automated workstations have the characteristics of high efficiency and intelligence, allowing users to easily cope with various challenges.

[0004] Forensic biochemical testing automated workstations are usually equipped with pipette modules, which are used to load TIP heads for aspiration and pipetting. Loading the TIP head relies on the loading force of the downward movement of the Z axis of the pipette module, and unloading the TIP head relies on the downward thrust of the motor inside the pipette module. The thrust drives the vertical sleeve of the TIP head outside the gun head of the pipette module to move downward and push the TIP head to fall. However, the TIP head used with the pipette module has a thorny problem of failure to withdraw the TIP head. There are many influencing factors, such as:

[0005] ① Batch-to-batch differences of TIP heads. Most of the raw materials of TIP heads are PP particles. The consumables of each product batch are affected by the differences in the materials themselves and the process deviation of the TIP head mold;

[0006] ②The impact of storage temperature on the TIP head. For example, the temperature difference between the four seasons in the north is large, and the TIP head expands and contracts with heat and cold. For fixed-twist or fixed-position pipette modules, there will be a big difference after loading the TIP head. When the temperature is low, the pipette module is relatively tight after loading the TIP head, and the torque required to remove the TIP head is relatively large. At this time, it is easy to fail to remove the TIP head;

[0007] ③The influence of the torque of the pipette module loading the TIP head and the influence of the debugging difference of the pipette module. For the pipette module debugged by each engineer, there will be a certain deviation in positioning;

[0008] ④ The influence of rust and corrosion on the pipette module gun tip. If the pipette module gun tip is rusted and the surface is not smooth, the friction between the pipette module gun tip and the inner surface of the TIP head will increase after the TIP head is loaded, resulting in failure of the pipette module to retract the TIP head;

[0009] ⑤ Influence of torque decay when the pipette module ejects the TIP head for a long time. After the pipette module runs for a period of time, the torque of the motor for ejecting the TIP head of the pipette module will decay, and the torque required for ejecting the TIP head cannot be satisfied, resulting in the failure of ejecting the TIP head.

[0010] Therefore, it is desired to provide a device for assisting the pipette module to eject the TIP head. When the pipette module fails to eject the TIP head, it can assist the pipette module to eject the TIP head, avoid frequent error reporting of the automated workstation due to the failure of ejecting the TIP head, thus ensuring the stable operation of the automated workstation and liberating the technical personnel from the cumbersome cooperation operation. Summary of the Invention

[0011] In order to overcome the above-mentioned shortcomings in the prior art, an object of the present invention is to provide a device for assisting the pipette module to eject the TIP head. When the pipette module fails to eject the TIP head, it can assist the pipette module to eject the TIP head, avoid frequent error reporting of the automated workstation due to the failure of ejecting the TIP head, thus ensuring the stable operation of the automated workstation and liberating the technical personnel from the cumbersome cooperation operation, and being suitable for large-scale popularization and application.

[0012] Another object of the present invention is to provide a device for assisting the pipette module to eject the TIP head, which is ingeniously designed, has a simple structure, is easy to manufacture, has a low manufacturing cost, and is suitable for large-scale popularization and application.

[0013] To achieve the above object, the present invention provides a device for assisting the pipette module to eject the TIP head, which is characterized in that it includes a fixed seat, a connecting plate and a clamping plate, wherein:

[0014] The fixed seat is used to be fixed on the mouth of the TIP head waste bin. The connecting plate is vertically arranged and arranged in the front-back direction. The lower end of the connecting plate is arranged on the fixed seat. The clamping plate is horizontally arranged and arranged on the upper end of the connecting plate in the front-back direction. The right part of the clamping plate protrudes rightward from the upper end of the connecting plate. A clamping opening is vertically arranged on the right side surface of the clamping plate. The clamping opening is used to be located above the mouth of the bin and used to clamp outside the vertical sleeve for ejecting the TIP head of the pipette module. The number of the clamping openings is multiple, and multiple clamping openings are arranged at intervals in the front-back direction.

[0015] Preferably, the number of the clamping openings is 2.

[0016] Preferably, the cross-section of the clamping opening is semi-circular.

[0017] Preferably, the upper end of the connecting plate extends rightward to form an extension part, the clamping plate is also arranged on the extension part, and the right part of the clamping plate protrudes rightward from the extension part.

[0018] More preferably, the lower surface of the extension part extends upward and rightward in an arc from the top of the right side surface of the connecting plate to the bottom of the right side surface of the extension part.

[0019] Preferably, the fixing seat includes a front side plate, a rear side plate and a left side plate. The front side plate and the rear side plate are both vertically arranged and both arranged along the left-right direction and spaced apart from each other in the front-rear direction. The left side plate is vertically arranged and arranged along the front-rear direction. The left side plate is located between the left side of the front side plate and the left side of the rear side plate and respectively connects the left side of the front side plate and the left side of the rear side plate. The lower end of the connecting plate is arranged on the left side plate. The left side plate is used to be located on the left side of the left side wall of the bucket opening and abuts against the left side wall. The front side plate and the rear side plate are used to be located in front of the front side wall and behind the rear side wall of the bucket opening respectively and respectively connect the front side wall and the rear side wall. Wherein the TIP head waste bucket is vertically arranged and arranged along the front-rear direction.

[0020] More preferably, the fixing seat further includes a front fixing bolt and a front fixing nut. The front side plate is provided with a front fixing hole along the front-rear direction and is used to abut against the front side wall. The front fixing bolt is arranged along the front-rear direction. The front end of the front fixing bolt is located in front of the front side plate and abuts against the front side plate. The middle part of the front fixing bolt penetrates through the front fixing hole along the front-rear direction and is used to penetrate through the front side wall along the front-rear direction. The rear end of the front fixing bolt is used to be located behind the front side wall. The front fixing nut is sleeved on and threadedly engaged with the rear end of the front fixing bolt. The front fixing nut is used to be located behind the front side wall and abut against the front side wall.

[0021] Furthermore, the number of the front fixing holes is multiple, and the multiple front fixing holes are vertically spaced apart from each other.

[0022] More preferably, the fixing seat further includes a rear fixing bolt and a rear fixing nut. The rear side plate is provided with a rear fixing hole along the front-rear direction and is used to abut against the rear side wall. The rear fixing bolt is arranged along the front-rear direction. The rear end of the rear fixing bolt is located behind the rear side plate and abuts against the rear side plate. The middle part of the rear fixing bolt penetrates through the rear fixing hole along the front-rear direction and is used to penetrate through the rear side wall along the front-rear direction. The front end of the rear fixing bolt is used to be located in front of the rear side wall. The rear fixing nut is sleeved on and threadedly engaged with the front end of the rear fixing bolt. The rear fixing nut is used to be located in front of the rear side wall and abut against the rear side wall.

[0023] Furthermore, the number of the rear fixing holes is multiple, and the multiple rear fixing holes are vertically spaced apart from each other.

[0024] The beneficial effects of the present invention mainly lie in:

[0025] 1. The device for assisting the pipette module to remove the TIP head of the present invention includes a fixed seat, a connecting plate and a clamping plate. The fixed seat is used to be fixed on the mouth of the TIP head waste bin. The connecting plate is vertically arranged and extends in the front-rear direction. The lower end of the connecting plate is arranged on the fixed seat. The clamping plate is horizontally arranged and is arranged on the upper end of the connecting plate in the front-rear direction. The right part of the clamping plate protrudes rightward from the upper end of the connecting plate. A clamping notch is vertically arranged on the right side surface of the clamping plate. The clamping notch is used to be located above the mouth of the bin and is used to be sleeved outside the vertical sleeve for removing the TIP head of the pipette module. The number of the clamping notches is multiple, and the multiple clamping notches are spaced from each other in the front-rear direction. During use, the flange added at the lower end of the vertical sleeve for removing the TIP head is clamped by the clamping notch, and then the pipette module moves vertically upward. At this time, the vertical sleeve for removing the TIP head is clamped and does not move, resisting the TIP head and preventing the TIP head from moving upward with the pipette module, so as to remove the TIP head, thereby realizing fault-tolerant processing and automatically clamping the TIP head. Therefore, when the pipette module fails to remove the TIP head, it can assist the pipette module to remove the TIP head, avoid frequent error reporting of the automated workstation due to the failure of removing the TIP head, ensure the stable operation of the automated workstation, liberate the cumbersome cooperation operation of technicians, and is suitable for large-scale popularization and application.

[0026] 2. The device for assisting the pipette module to remove the TIP head of the present invention includes a fixed seat, a connecting plate and a clamping plate. The fixed seat is used to be fixed on the mouth of the TIP head waste bin. The connecting plate is vertically arranged and extends in the front-rear direction. The lower end of the connecting plate is arranged on the fixed seat. The clamping plate is horizontally arranged and is arranged on the upper end of the connecting plate in the front-rear direction. The right part of the clamping plate protrudes rightward from the upper end of the connecting plate. A clamping notch is vertically arranged on the right side surface of the clamping plate. The clamping notch is used to be located above the mouth of the bin and is used to be sleeved outside the vertical sleeve for removing the TIP head of the pipette module. The number of the clamping notches is multiple, and the multiple clamping notches are spaced from each other in the front-rear direction. During use, the flange added at the lower end of the vertical sleeve for removing the TIP head is clamped by the clamping notch, and then the pipette module moves vertically upward. At this time, the vertical sleeve for removing the TIP head is clamped and does not move, resisting the TIP head and preventing the TIP head from moving upward with the pipette module, so as to remove the TIP head, thereby realizing fault-tolerant processing and automatically clamping the TIP head. Therefore, it is ingeniously designed, has a simple structure, is easy to manufacture, has a low manufacturing cost, and is suitable for large-scale popularization and application.

[0027] These and other objects, features and advantages of the present invention are fully embodied by the following detailed description and the drawings, and can be realized by the means, devices and their combinations specifically pointed out in the description of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a three-dimensional schematic diagram of a specific embodiment of the device for assisting the pipette module to remove the TIP head of the present invention.

[0029] Figure 2 isFigure 1 A perspective partial view of the vertical sleeve for removing the TIP head of the pipette module used in conjunction with the specific embodiment shown.

[0030] Figures 3 to 8 is adopted Figure 1 A front partial view of different stages of the process of assisting the pipette module to remove the TIP head using the specific embodiment shown.

[0031] (Symbol description)

[0032] 1 Fixed seat; 2 Connecting plate; 3 Clamping plate; 4 Bayonet; 5 Extension part; 6 Front side plate; 7 Rear side plate; 8 Left side plate; 9 Front fixing bolt; 10 Front fixing hole; 11 Rear fixing hole; 12 TIP head waste bin; 13 Pipette module; 14 Vertical sleeve for removing TIP head; 15 Flange; 16 Nozzle; 17 TIP head. Detailed implementation manners

[0033] In order to more clearly understand the technical content of the present invention, the following embodiments are specifically described in detail.

[0034] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0035] Please refer to Figure 1 As shown, in a specific embodiment of the present invention, the device for assisting the pipette module to remove the TIP head of the present invention includes a fixed seat 1, a connecting plate 2 and a clamping plate 3, wherein:

[0036] The fixed seat 1 is used to be fixed on the mouth of the TIP head waste bin 12. The connecting plate 2 is vertically arranged and arranged in the front-rear direction. The lower end of the connecting plate 2 is arranged on the fixed seat 1. The clamping plate 3 is horizontally arranged and arranged on the upper end of the connecting plate 2 in the front-rear direction. The right part of the clamping plate 3 protrudes rightward from the upper end of the connecting plate 2. A bayonet 4 is vertically arranged on the right side surface of the clamping plate 3. The bayonet 4 is used to be located above the mouth of the bin and used to be clamped outside the vertical sleeve 14 for removing the TIP head of the pipette module 13 (see Figure 2 ). The number of the bayonets 4 is multiple, and the multiple bayonets 4 are arranged at intervals in the front-rear direction.

[0037] The number of the bayonets 4 can be determined according to needs. The above "multiple" means more than 2. Please refer to Figure 1As shown, in a specific embodiment of the present invention, the number of the bayonets 4 is two.

[0038] The cross-section of the bayonet 4 can have any suitable shape. Please refer to Figure 1 As shown, in a specific embodiment of the present invention, the cross-section of the bayonet 4 is semi-circular.

[0039] The upper end of the connecting plate 2 can have any suitable shape. Please refer to Figure 1 As shown, in a specific embodiment of the present invention, an extension portion 5 is formed by the upper end of the connecting plate 2 extending rightward. The clamping plate 3 is also arranged on the extension portion 5, and the right part of the clamping plate 3 protrudes rightward from the extension portion 5.

[0040] The lower surface of the extension portion 5 can have any suitable shape. Please refer to Figure 1 As shown, in a specific embodiment of the present invention, the lower surface of the extension portion 5 extends arcuately upward and rightward from the top of the right side surface of the connecting plate 2 to the bottom of the right side surface of the extension portion 5.

[0041] The fixed seat 1 can have any suitable constitution. Please refer to Figure 1 As shown, in a specific embodiment of the present invention, the fixed seat 1 includes a front side plate 6, a rear side plate 7 and a left side plate 8. The front side plate 6 and the rear side plate 7 are both vertically arranged and both arranged in the left-right direction and spaced apart from each other front and rear. The left side plate 8 is vertically arranged and arranged in the front-rear direction. The left side plate 8 is located between the left side of the front side plate 6 and the left side of the rear side plate 7 and is respectively connected to the left side of the front side plate 6 and the left side of the rear side plate 7. The lower end of the connecting plate 2 is arranged on the left side plate 8. The left side plate 8 is used to be located on the left of the left side wall of the barrel opening and abuts against the left side wall. The front side plate 6 and the rear side plate 7 are used to be located in front of the front side wall and behind the rear side wall of the barrel opening respectively and are respectively connected to the front side wall and the rear side wall. Wherein the TIP head waste bin 12 is vertically arranged and arranged in the front-rear direction.

[0042] The front side plate 6 is used to connect the front side wall and can adopt any suitable structure. Please refer to Figure 1 As shown, in a specific embodiment of the present invention, the fixed seat 1 further includes a front fixing bolt 9 (see Figure 3) and a front fixing nut (not shown in the figure). The front side plate 6 is provided with a front fixing hole 10 along the front-back direction and is used to abut against the front side wall. The front fixing bolt 9 is arranged along the front-back direction. The front end of the front fixing bolt 9 is located in front of the front side plate 6 and abuts against the front side plate 6. The middle part of the front fixing bolt 9 passes through the front fixing hole 10 along the front-back direction and is used to pass through the front side wall along the front-back direction. The rear end of the front fixing bolt 9 is used to be located behind the front side wall. The front fixing nut is sleeved on and threadedly engaged with the rear end of the front fixing bolt 9. The front fixing nut is used to be located behind the front side wall and abut against the front side wall.

[0043] The number of the front fixing holes 10 can be determined as needed. Further, the number of the front fixing holes 10 is multiple, and the multiple front fixing holes 10 are vertically spaced from each other. The above "multiple" means more than 2. Please refer to Figure 1 As shown, in a specific embodiment of the present invention, the number of the front fixing holes 10 is 2.

[0044] The rear side plate 7 is used to connect the rear side wall and can adopt any suitable structure. Please refer to Figure 1 As shown, in a specific embodiment of the present invention, the fixing seat 1 further includes a rear fixing bolt (not shown in the figure) and a rear fixing nut (not shown in the figure). The rear side plate 7 is provided with a rear fixing hole 11 along the front-back direction and is used to abut against the rear side wall. The rear fixing bolt is arranged along the front-back direction. The rear end of the rear fixing bolt is located behind the rear side plate 7 and abuts against the rear side plate 7. The middle part of the rear fixing bolt passes through the rear fixing hole 11 along the front-back direction and is used to pass through the rear side wall along the front-back direction. The front end of the rear fixing bolt is used to be located in front of the rear side wall. The rear fixing nut is sleeved on and threadedly engaged with the front end of the rear fixing bolt. The rear fixing nut is used to be located in front of the rear side wall and abut against the rear side wall.

[0045] The number of the rear fixing holes 11 can be determined as needed. Further, the number of the rear fixing holes 11 is multiple, and the multiple rear fixing holes 11 are vertically spaced from each other. Please refer to Figure 1 As shown, in a specific embodiment of the present invention, the number of the rear fixing holes 11 is 2.

[0046] With the above settings, when it is necessary to fix the fixed seat 1 on the mouth of the TIP head waste bin 12, the mouth of the TIP head waste bin 12 is clamped between the front side plate 6, the rear side plate 7 and the left side plate 8, so that the front side plate 6 is located in front of the front side wall and abuts against the front side wall, the rear side plate 7 is located behind the rear side wall and abuts against the rear side wall, and the left side plate 8 is located on the left side of the left side wall and abuts against the left side wall. The front fixing bolt 9 is sequentially passed through the front fixing hole 10 and the front side wall from front to back until the front end of the front fixing bolt 9 is located in front of the front side plate 6 and abuts against the front side plate 6 and the rear end of the front fixing bolt 9 is located behind the front side wall. The front fixing nut is sleeved and threadedly engaged with the rear end of the front fixing bolt 9 until the front fixing nut is located behind the front side wall and abuts against the front side wall. The rear fixing bolt is sequentially passed through the rear fixing hole 11 and the rear side wall from back to front until the rear end of the rear fixing bolt is located behind the rear side plate 7 and abuts against the rear side plate 7 and the front end of the rear fixing bolt is located in front of the rear side wall. The rear fixing nut is sleeved and threadedly engaged with the front end of the rear fixing bolt until the rear fixing nut is located in front of the rear side wall and abuts against the rear side wall.

[0047] In use, corresponding structural changes need to be made to the lower end of the TIP head retracting vertical sleeve 14 of the pipette module 13 equipped in the forensic biochemical test automation workstation: a flange 15 is horizontally extended outward at the lower end of the TIP head retracting vertical sleeve 14, as Figure 2 shown. The flange 15 can be manufactured together when manufacturing the TIP head retracting vertical sleeve 14, or can be added later. For example, the flange 15 can be sleeved outside the lower end of the TIP head retracting vertical sleeve 14, and welding, bonding or screw fixing can be used.

[0048] The TIP head waste bin 12 is usually detachably fixed in the forensic biochemical test automation workstation. The fixed seat 1 of the present invention is fixed on the mouth of the TIP head waste bin 12. When it is detected that the internal motor of the pipette module 13 fails to push the TIP head retracting vertical sleeve 14 downward to retract the TIP head 17, that is, the TIP head 17 is not normally retracted (see Figure 3 ), for example, after the operation of retracting the TIP head 17, it is detected by the photoelectric detector that the TIP head 17 still exists on the tip 16 of the pipette module 13. At this time, the automation workstation performs a fault tolerance process (that is, when it is detected that the retraction of the TIP head 17 fails, it does not report an error first, but directly performs corresponding remedial measures); the pipette module 13 is moved above the mouth of the TIP head waste bin 16 and moved downward so that the flange 15 at the lower end of the TIP head retracting vertical sleeve 14 is lower than the bayonet 4 (see Figure 4);Then move the pipette module 13 to the left so that the vertical sleeve 14 of the TIP head ejector snaps into the bayonet 4, and move the pipette module 13 upward. The vertical sleeve 14 of the TIP head ejector is caught by the bayonet 4 to hold the flange 15. At this time, the vertical sleeve 14 of the TIP head ejector is stuck and cannot move upward (see Figure 5 );Move the pipette module 13 further upward. Since the vertical sleeve 14 of the TIP head ejector is stuck and cannot move upward, the lower end of the vertical sleeve 14 of the TIP head ejector abuts against the TIP head 17 to snap off the TIP head 17 (see Figure 6 );Then move the pipette module 13 to the right so that the vertical sleeve 14 of the TIP head ejector moves to the right and exits the bayonet 4 (see Figure 7 );Then move the pipette module 13 upward (see Figure 8 ), completing the entire operation of snapping the TIP head 17.

[0049] Therefore, the present invention uses the bayonet to catch the flange at the lower end of the vertical sleeve of the TIP head ejector, and then moves the pipette module vertically upward. At this time, the vertical sleeve of the TIP head ejector is stuck and does not move, abutting against the TIP head to prevent the TIP head from moving upward with the pipette module, and the TIP head is ejected, thereby realizing the fault-tolerant processing of automatically snapping the TIP head.

[0050] Forensic DNA samples are extremely precious in criminal investigation and forensic identification due to their uniqueness and irreplaceability. Scene DNA samples usually have the characteristic of being "one-time", such as trace blood stains, contact biological traces, etc. Once contaminated or lost, they cannot be reproduced. The preciousness of the samples stems from their scientific value, legal effect and irreversible extraction process. Their effective utilization relies on advanced technology, professional quality and rigorous processes to ensure judicial fairness and investigation efficiency. After the pipette module of the forensic biochemical test automatic workstation fails to eject the TIP head and reports an error, manual intervention by the staff is required. Manual operation is prone to errors and is likely to cause sample contamination or cross-contamination, resulting in the failure of the extraction experiment.

[0051] Adopting the present invention in cooperation with the pipette module of the forensic biochemical test automatic workstation can realize the fault-tolerant processing of automatically snapping the TIP head, thereby eliminating the need for manual intervention by the staff, liberating the cumbersome operation that requires the staff to cooperate, avoiding the problem that manual intervention by the staff is required after an error is reported, which is likely to cause sample contamination or cross-contamination and lead to the failure of the extraction experiment, and ensuring the stable operation of the automatic workstation. The structure of the present invention is simple and the operation is convenient.

[0052] The present invention is not only applicable to the forensic biochemical test automatic workstation, but also used in other equipment equipped with a pipette module.

[0053] In summary, when the device for assisting the pipette module to remove the TIP head in the present invention fails to remove the TIP head, it can assist the pipette module to remove the TIP head, avoiding frequent error reports of the automated workstation due to the failure of removing the TIP head, thereby ensuring the stable operation of the automated workstation, liberating the tedious cooperation operation of technicians, with ingenious design, simple structure, easy manufacturing, low manufacturing cost, and being suitable for large-scale popularization and application.

[0054] Thus, the objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and described in the embodiments, and the implementation manners can be arbitrarily modified without departing from the principles. Therefore, the present invention includes all variant implementation manners based on the spirit and scope of the claims.

Claims

1. A device for assisting a pipette module in removing a TIP head, characterized in that: It includes a fixing seat, a connecting plate and a card plate, wherein: The fixing seat is used to be fixed on the barrel mouth of the TIP head waste barrel, the connecting plate is arranged vertically and along the front-to-back direction, the lower end of the connecting plate is arranged on the fixing seat, the clamping plate is arranged horizontally and along the front-to-back direction on the upper end of the connecting plate, the right part of the clamping plate protrudes to the right from the upper end of the connecting plate, and a bayonet is vertically arranged on the right side surface of the clamping plate, the bayonet is used to be located above the barrel mouth and to be clamped on the outside of the vertical sleeve of the withdrawn TIP head of the pipette module, the number of the bayonet is multiple, and the multiple bayonet are arranged with a front-to-back interval.

2. The device for assisting a pipette module in removing a TIP head as claimed in claim 1, characterized in that: The number of the bayonet ports is 2.

3. The device for assisting a pipette module in removing a TIP head as claimed in claim 1, characterized in that: The cross section of the bayonet is semicircular.

4. The device for assisting a pipette module in removing a TIP head as claimed in claim 1, characterized in that: The upper end of the connecting plate extends rightward to form an extension portion, the clamping plate is also arranged on the extension portion, and the right portion of the clamping plate protrudes rightward from the extension portion.

5. The device for assisting a pipette module in removing a TIP head as claimed in claim 4, characterized in that: The lower surface of the extension portion extends in an arc shape upward and rightward from the top of the right side surface of the connecting plate to the bottom of the right side surface of the extension portion.

6. The device for assisting a pipette module in removing a TIP head as claimed in claim 1, characterized in that: The fixing seat includes a front side plate, a rear side plate and a left side plate, the front side plate and the rear side plate are both arranged vertically and along the left-right direction and are spaced apart from each other front to back, the left side plate is arranged vertically and along the front-to-back direction, the left side plate is located between the left side of the front side plate and the left side of the rear side plate and respectively connects the left side of the front side plate and the left side of the rear side plate, the lower end of the connecting plate is arranged on the left side plate, the left side plate is used to be located on the left side of the left side wall of the barrel mouth and abut against the left side wall, the front side plate and the rear side plate are used to be located respectively in front of the front side wall and behind the rear side wall of the barrel mouth and respectively connect the front side wall and the rear side wall, wherein the TIP head waste barrel is arranged vertically and along the front-to-back direction.

7. The device for assisting a pipette module in removing a TIP head as claimed in claim 6, characterized in that: The fixing seat also includes a front fixing bolt and a front fixing nut, the front side plate is provided with a front fixing hole along the front-to-back direction and is used to abut against the front side wall, the front fixing bolt is provided along the front-to-back direction, the front end of the front fixing bolt is located in front of the front side plate and abuts against the front side plate, the middle part of the front fixing bolt is penetrated by the front fixing hole along the front-to-back direction and is used to penetrate the front side wall along the front-to-back direction, the rear end of the front fixing bolt is used to be located behind the front side wall, the front fixing nut is sleeved and threadedly engaged with the rear end of the front fixing bolt, and the front fixing nut is used to be located behind the front side wall and abut against the front side wall.

8. The device for assisting a pipette module in removing a TIP head as claimed in claim 7, characterized in that: There are multiple front fixing holes, and the multiple front fixing holes are vertically spaced apart from each other.

9. The device for assisting a pipette module in removing a TIP head as claimed in claim 6, characterized in that: The fixing seat also includes a rear fixing bolt and a rear fixing nut, the rear side plate is provided with a rear fixing hole along the front-to-back direction and is used to abut against the rear side wall, the rear fixing bolt is provided along the front-to-back direction, the rear end of the rear fixing bolt is located behind the rear side plate and abuts against the rear side plate, the middle part of the rear fixing bolt passes through the rear fixing hole along the front-to-back direction and is used to pass through the rear side wall along the front-to-back direction, the front end of the rear fixing bolt is used to be located in front of the rear side wall, the rear fixing nut is sleeved and threadedly engaged with the front end of the rear fixing bolt, and the rear fixing nut is used to be located in front of the rear side wall and abut against the rear side wall.

10. The device for assisting a pipette module in removing a TIP head according to claim 9, characterized in that: There are multiple rear fixing holes, and the multiple rear fixing holes are vertically spaced apart from each other.

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