CN112895171B

CN112895171B - Method for breaking microscopic tube and closed structure used under method

Info

Publication number: CN112895171B
Application number: CN202110061185.7A
Authority: CN
Inventors: 陈春晓; 陈蕾; 任潇宇
Original assignee: Shandong Meiyi Biotechnology Co ltd
Current assignee: Taipingyang Kangtai Scientific Apparatus Jinan Co ltd
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2022-07-22
Anticipated expiration: 2041-01-18
Also published as: CN112895171A

Abstract

The invention relates to a method for cutting off a microscopic tube and a closed structure used under the method. In the pipe breaking process, the cutting position of the display micro-pipe is placed into a closed cavity, a fan communicated with the closed cavity is started to form suction airflow in the closed cavity, and then a cutting machine is started to complete pipe breaking operation. And after the pipe breaking operation is finished, the fan is closed and the closed cavity arranged outside the microscope is removed. The method provided by the patent can better solve the problem of cleanness of the microtube caused by adhesion of the glass fine particles on the inner surface of the tube wall, and under the tube breaking method, the glass fine particles generated during cutting of the microtube can be timely taken away by air flow, so that the glass fine particles generated by cutting are prevented from being adhered to the inner wall of the microtube, and the inner wall of the microtube is enabled to have good cleanness.

Description

Tube breaking method for microscopic tube and closed structure used under method

Technical Field

The invention relates to a tube breaking method for finishing the tube breaking processing of a microscopic tube by adopting a cutting blade and a closed structure capable of being used in the method. The microtube (such as microtube and the like) is a glass tube which can be used in the fields of medical instruments, bioengineering, cell engineering and the like.

Background

The glass microtubes or glass microneedles, such as microtubes (or microtubes, ovum-peeling needles) are generally manufactured by the process steps of tube drawing, tube breaking, polishing and the like, and most of the used blanks are glass tubes with the inner diameter of 1.5 mm. The cutting method adopted in the current production process of the glass display micropipe mainly comprises cutting a piece of the micropipe (needle) or cutting the micropipe (needle) on a calcinator. Taking a microscopic tube as an example, the cutting mode of the segment tube mainly has the problem of poor tube length consistency of the finished microscopic tube. The problem that the tube (needle) of the calcinator is broken is that the cutting process consumes more time, the production efficiency is low, and only one tube can be broken at a time. The microtube cutting device that completes the needle breakage by means of the cutting blade (or the grinding wheel) cuts the microtube by applying thermal shock while forming scratches by bringing the cutting blade into contact with the outer circumferential surface of the microtube.

The prior art cutting and slicing pipe device has the following problems: since the cutting spacer is merely brought into contact with the wall of the glass microtube such as a microtube, fine glass particles generated at the time of cutting easily flow into the microtube from the opening at the cross section, and the fine glass particles adhere to the inner surface of the tube, thereby contaminating the cleanness of the inner wall of the microtube. The problem of adhesion of fine glass particles to the inner surface of the tube wall is very important for medical instruments, experimental instruments, surgical instruments and the like such as a microtube which pay particular attention to the cleanness of the interior of the tube. After the cutting treatment, the inner wall surface of the developing tube has to be cleaned in particular.

Disclosure of Invention

Aiming at the problem of poor consistency of pipe breakage in the pipe cutting and pipe breaking process, the invention provides a method for breaking a microtube, wherein cutting is carried out in a closed space in the pipe breaking process, and glass fine particles generated in the pipe breaking process are extracted from the closed space through air flow, so that the problem that the glass fine particles are easy to adhere to the inner wall of the microtube/microtube after the pipe is broken is solved, and the method is favorable for ensuring that the inner wall of the microtube/microtube obtained after the pipe is broken has good cleanness.

The technical scheme adopted by the invention for solving the technical problem is as follows: a method for cutting off a microscopic tube comprises a tube arranging process, a tube feeding process, a tube cutting process and a tube taking process.

The operation of clamping the display microtube on the workbench is completed in the tube arranging process.

And in the tube feeding process, the operation of moving the tube body of the microscopic tube to the cutting piece and enabling the needle-shaped end port of the microscopic tube to have a preset axial distance from the cutting piece at the moment is completed.

And in the tube breaking process, the operation of cutting the microtube into required length by the cutting piece by starting the cutting machine is completed. And in the pipe breaking operation, the cutting position of the display micro-pipe is firstly placed into a closed cavity, a fan communicated with the closed cavity is started to form suction airflow in the closed cavity, and then the cutting machine is started to complete the pipe breaking operation. And after the pipe breaking operation is finished, the fan is closed and the closed cavity arranged outside the microscope is removed.

And in the tube taking process, the operation of taking down the display microtube from the workbench or conveying the display microtube to the next procedure is completed.

Furthermore, the operation of clamping a plurality of microscopic tubes on the workbench and enabling the needle-shaped end ports of the microscopic tubes to be flush is completed in the tube arranging process. And in the tube conveying process, the operation that the tube bodies of the micro tubes are synchronously moved to the cutting piece, and the needle-shaped end ports of the micro tubes at the moment have preset axial intervals from the cutting piece is completed. In the tube breaking operation, the cutting positions of the respective display tubes are simultaneously placed into a closed cavity or are sequentially placed into a closed cavity.

And starting the cutting machine to complete the pipe cutting operation on the premise that the cutting position of the display micro-pipe is placed into the closed cavity and the suction air flow is formed in the closed cavity. And after all the microtubes are subjected to tube breakage operation, taking down the microtubes from the workbench or synchronously conveying the microtubes to the next procedure.

Furthermore, the tube breaking operation keeps the display tube in the state of inclining the axis line and inclining from the needle-shaped end to the other end from top to bottom.

Furthermore, a collecting cavity is arranged between the closed cavity and a communicating pipeline of the fan, and fluffy floccules such as cotton and absorbent cotton and similar artificial fibers such as polyester fibers are filled in the collecting cavity.

The closed structure suitable for the method for breaking the microscopic tube comprises an upper cavity and a lower cavity which are oppositely arranged up and down. The cutting machine can be arranged in the upper cavity, so that the lower cavity is connected with the ventilator.

The lower port of the upper cavity is opposite to the upper port of the lower cavity, and a circle of elastic cushion layer is respectively arranged outside the two ports. The elastic cushion layer on the upper cavity and the elastic cushion layer on the lower cavity can lift along with the cavity, so that the elastic cushion layer on the upper cavity and the elastic cushion layer on the lower cavity can be selectively close to and separated from each other.

The display micropipe passes through the port of the upper cavity and the port of the lower cavity and is clamped between the elastic cushion layers of the two cavities, and the elastic cushion layers are pressed together to enable the upper cavity and the lower cavity to be buckled to form a closed cavity.

The cavity of the lower cavity is communicated with the collecting cavity through a hose. The collection cavity is connected with a fan, the fan can suck air in a closed cavity formed by the collection cavity, the upper cavity and the lower cavity to continuously flow to form unidirectional flowing air flow, and the generated glass fine particles are taken away from the micro-tube by the air flow and are concentrated in the collection cavity. During the period, the suction effect of the fan can lead the cavity of the collecting cavity, the closed cavity formed by the upper cavity and the lower cavity to form negative pressure, and suction airflow is formed.

Furthermore, the periphery of the upper cavity is provided with a sliding sleeve, and the elastic cushion layer is arranged on the lower end face of the sliding sleeve. And a sealing ring is arranged between the sliding sleeve and the wall surface of the upper cavity. The top surface of the upper cavity is provided with a lifting motor a provided with a wire lever, and the wire lever at the position is matched with the sliding sleeve to enable the lifting motor a to drive the sliding sleeve to lift.

Furthermore, a workbench a and a workbench b for supporting the display micropipes are arranged on the left side and the right side of the lower cavity.

The lower cavity is arranged between the workbench a and the workbench b or on the workbench b through a connecting frame.

The lower part of the lower cavity is formed into a tubular part, the port of the tubular part is communicated with the collection cavity through a hose, and the exterior of the tubular part is matched with a connecting sleeve. The lower end of the connecting frame is provided with a lifting motor b provided with a wire lever, and the wire lever at the position is matched with the connecting sleeve to enable the lifting motor b to drive the lower cavity to lift.

Furthermore, the cavity of the lower cavity is a conical cavity, and the necking end of the cavity is downward.

Furthermore, the upper cavity and the lower cavity are both installed on the workbench b through a connecting frame.

The workbench a is matched with the base through the support sliding table, and the cylinder rod unit capable of driving the support sliding table to slide in a reciprocating manner along a straight line is mounted on the base, so that the workbench a can be selectively far away from and close to the workbench b.

The workbench b is matched with the base through the supporting table, the supporting table is close to one end of the supporting sliding table is matched with the hydraulic cylinder a, and the end of the supporting sliding table is matched with the hydraulic cylinder b. The hydraulic cylinders a and b can keep the table top of the support table in a horizontal state or a tilting state.

Further, the fan is mounted atop the collection chamber. The middle part of the collecting cavity is provided with a clapboard, and a cavernous body is filled in the cavity above the clapboard. And a connecting pipe with one end connected with the lower cavity and the other end extending to the lower part of the clapboard is arranged in the collecting cavity.

Further, the cavity below the partition board is filled with fluffy floccules, such as cotton, absorbent cotton, and similar artificial fibers, such as polyester fibers.

And the upper cavity is provided with a coding motor provided with a wire lever, and the axial direction of the wire lever is vertical to the axial direction of the display tube arranged on the sliding table. The lower part of a sliding block arranged on the screw lever is provided with a connecting seat, and the connecting seat is provided with a sliding seat and a first motor driving the sliding seat to reciprocate through a linear track in a matching way. The moving direction of the sliding seat is consistent with the axial direction of the display tube arranged on the sliding table. The sliding seat is connected with a bearing seat bearing the cutter, and a driving unit capable of driving the bearing seat to lift is arranged on the sliding seat.

The invention has the beneficial effects that: the method provided by the patent can better solve the problem of cleanness of the microtube caused by adhesion of the glass fine particles on the inner surface of the tube wall, and under the tube breaking method, the glass fine particles generated during cutting of the microtube can be timely taken away by air flow, so that the glass fine particles generated by cutting are prevented from being adhered to the inner wall of the microtube, and the inner wall of the microtube is enabled to have good cleanness.

Drawings

FIG. 1 is a schematic view of the overall structure of an embodiment of the present patent (top view state one).

Fig. 2 is a schematic view of the overall structure of an embodiment of the present patent (top view state two).

Fig. 3 is a schematic structural diagram of a driving unit for controlling the cutter to walk (in space) in the patent.

Fig. 4 is a schematic view a of the closed space formation structure and the negative pressure flow formation structure applied in the present patent solution.

Fig. 5 is a schematic view B of the closed space formation structure and the negative pressure flow formation structure applied in the present patent solution.

Fig. 6 is a schematic view of a part a of the enlarged structure in fig. 4.

In the figure: the device comprises a workbench a, 11 supporting sliding tables, a 12 cylinder rod unit, a workbench b, 21 protruding block a, 22 supporting tables, 23 hydraulic cylinder a, 24 hydraulic cylinder b, 3 sliding tables, 31 protruding block A, 4 pushing mechanisms, 5 pressing block mechanisms a, 6 negative pressure flow assemblies, 61 upper cavities, 611 sliding sleeves, 612 lifting motors a, 62 lower cavities, 621 conical cavities, 63 elastic cushions, 64 connecting sleeves, 65 lifting motors b, 66 connecting frames a, 67 connecting frames b, 7 coding motors, 71 wire levers, 72 sliding blocks, 73 guide rods, connecting seats 74, 75 sliding seats, 76 first motors, 77 second motors, 8 pressing block mechanisms b, 9 collecting cavities, 91 fans, 92 connecting pipes, 93 sponges, 10 bases and 100 display micro pipes.

Detailed Description

The structures, proportions, and dimensions shown in the drawings and described in the specification are for the understanding of those skilled in the art, and are not intended to limit the scope of the present invention, which is defined in the appended claims, so they are not essential to the technology, and any structural modifications, changes in proportions, or adjustments in size, which do not affect the efficacy and attainment of the same, are intended to fall within the scope of the invention. In addition, the terms "upper", "lower", "front", "rear" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the relative positions may be changed or adjusted without substantial technical changes.

A method for cutting off a microscopic tube comprises a tube arranging process, a tube feeding process, a tube cutting process and a tube taking process. The operation of clamping the display microtube on the workbench is completed in the tube arranging process. And in the tube feeding process, the operation of moving the tube body of the microscopic tube to the cutting piece and enabling the needle-shaped end port of the microscopic tube to have a preset axial distance from the cutting piece at the moment is completed. And in the pipe breaking process, the operation of cutting the microtube into required length by the cutting blade by starting the cutting machine is completed. And in the pipe breaking operation, the cutting position of the display micro-pipe is firstly placed into a closed cavity, a fan communicated with the closed cavity is started to form suction airflow in the closed cavity, and then the cutting machine is started to complete the pipe breaking operation. And after the pipe breaking operation is finished, the fan is closed and the closed cavity arranged outside the microscope is removed. And in the tube taking process, the operation of taking down the microscopic tube from the workbench or conveying the microscopic tube to the next procedure is completed.

In the above method, it is preferable that the operation of locking the plurality of microtubes on the table and aligning the needle-shaped end ports of the respective microtubes is completed during the tube alignment. And in the tube conveying process, the operation that the tube bodies of the micro tubes are synchronously moved to the cutting piece, and the needle-shaped end ports of the micro tubes at the moment have preset axial intervals from the cutting piece is completed. In the tube breaking operation, the cutting positions of the respective display tubes are simultaneously placed into a closed cavity or are sequentially placed into a closed cavity.

And starting the cutting machine to complete the pipe cutting operation on the premise that the cutting position of the display micro-pipe is placed into the closed cavity and the suction air flow is formed in the closed cavity. And after all the microtubes are subjected to tube breaking operation, taking down the microtubes from the workbench or synchronously conveying the microtubes to the next procedure.

The pipe cutting method can be implemented by adopting a pipe cutting device of the microscope as shown in figures 1 and 2.

The illustrated microtube cutting device comprises a workbench a1 and a workbench b2 which are mounted on a base 10, a sliding table 3 arranged on the workbench a1, a briquetting mechanism a5 arranged right above the sliding table 3, a briquetting mechanism b8 arranged right above the workbench b2, a pushing mechanism 4 and a cutting machine (not shown, and a well-known cutting machine is selected). The cutting machine is placed at the distance of the two tables 1, 2. When the tube is broken, the microtube 100 is placed on the table a1, and the pusher mechanism 4 pushes the tip end (needle end) of the microtube to move for a certain length on the table b2, and then the microtube 100 is cut by the cutter.

The pressing block of the pressing block mechanism a5 and the pressing block of the pressing block mechanism b8 can be lifted in the plumb direction, so that each pressing block can be selectively close to or far away from the table surface of the workbench a1 or the table surface of the workbench b 2. A layer of resin rubber pad or rubber pad is fixedly arranged on the lower end face of the pressing block mechanism a5 and/or the lower end face of the pressing block mechanism b8, so that the static friction resistance when the pressing block mechanisms 5 and 8 are in contact with the pipe wall of the microtube 100 is increased.

The upper end face of the sliding table 3 is provided with a plurality of protrusions a31 which are arranged at intervals, and the workbench b2 which is positioned below the briquetting mechanism b8 is provided with a plurality of protrusions a21 which are arranged at intervals.

The microtube 100 can be clamped in the gap formed between two adjacent bumps a31, and the pressing block mechanism a5 can apply downward pressure to the microtube 100. The pushing mechanism 4 can push the sliding table 3 carrying the display tube 100 to move towards the workbench b2, and the briquetting mechanism a5 can move synchronously with the sliding table 5. The pushing mechanism 4 is connected with the sliding table 3 and can drive the sliding table 3 to reciprocate relative to the workbench a1 along the left-right direction.

When the pushing mechanism 4 pushes the sliding table 3 to move the microscope 100 carried by the microscope tube to the side of the table b2, the tip end of the microscope tube 100 can gradually pass through the gap formed between two adjacent protrusions a21, and the middle part of the microscope tube 100 is clamped in the gap formed between two protrusions a21, and at this time, the pressing block mechanism b8 can apply downward pressure to the microscope tube 100. After the microtube 100 is clamped between the two adjacent projections A31 and between the two adjacent projections a21, the upper side of the tube wall is exposed outside the projections 21, 31.

It is required that the microscope tube 100 is placed between two adjacent projections A31, and the two projections A31 provide a limited (small) holding force to the microscope tube 100, because the holding force is too large, which may make it difficult to place the microscope tube 100 between two adjacent projections A31. Therefore, it is necessary to fix the microscope 100 relatively to the slide table 3 by means of the clamping structure formed by the adjacent protrusions a31, and to prevent the microscope 100 from moving axially relative to the slide table 3 by means of the pressing block in the pressing block mechanism a5 contacting the microscope and applying downward pressure to the microscope 100. When the microtube 100 is pushed through between two adjacent projections a21, the tube wall will gradually contact the side wall of the projection a 21. The requirement that the two tabs a21 provide a more limited grip on the microscope tube 100 (less than the tab a31 provides on the microscope tube 100) generally requires only contact to avoid axial play as the tabs a21 provide relatively excessive sliding resistance as the microscope tube 100 passes axially between the two tabs a 21. Finally, the pressing block in the pressing block mechanism b8 is contacted with the microtube 100 and applies downward pressure to the microtube 100, so that the aim of preventing the microtube 100 from axially shifting relative to the sliding table 3 is further fulfilled. Finally, the microscope 100 is reliably fixed between the two working tables 1 and 2, and the phenomenon that the microscope 100 has axial play and the phenomenon that the microscope 100 rotates around the axis are not easy to occur when the microscope is cut off, so that the cutting off process is ensured to be smoothly completed.

As shown in the figure, a plurality of (semi-finished) microtubes 100 are simultaneously arranged on the sliding table 3 side by side, so that the production efficiency of broken tubes can be greatly improved, the consistency of the processing length can be ensured, and the production cost can be reduced. Generally, 5 to 10 microtubes can be subjected to tube breakage sequentially at the same time. Whether one or a plurality of (semi-finished) microtubes 100 are placed on the sliding table 3, the length of the tip end of the microtube relative to the front feeding clamp is required to be set in the front feeding process, and the preset premise of good consistency of the microtubes obtained by subsequent cutting is provided. After the (semi-finished) microtube is fed onto the sliding table through the feeding mechanism in the pre-procedure, the axial distance between the tip port of the (semi-finished) microtube and the (left and right) side faces of the sliding table is consistent and is the length to be obtained, so that the needle-shaped end port of the microtube has a preset axial distance from the cutting sheet when the tube body of the microtube moves to the cutting sheet. As shown in fig. 1, after a plurality of microscope tubes 100 placed side by side on the slide table 3 are fixed on the slide table 3, the tip end ports of the microscope tubes 100 are aligned at O-O lines, and the axial distance from the O-O lines to the right side surface of the slide table is fixed. When the front feeding mechanism places the next group of display microtubes on the sliding table 3, the tip end port of each display microtube 100 is still aligned at the O-O line.

The preposed feeding mechanism can adopt a known feeding device. If the front feeding mechanism cannot ensure that the tip ports of the micro-tubes placed on the sliding table 3 are located on the same straight line extending back and forth (at this time, the axes of the micro-tubes are perpendicular to the straight line), a tube aligning mechanism is required to be configured in the patent scheme, and the tip ports of the micro-tubes placed on the sliding table 3 are aligned on the same straight line (such as the illustrated O-O line) by means of the tube aligning mechanism. After the pipe arrangement mechanism completes the pipe arrangement, the pipe arrangement mechanism a5 applies pressure to the microtube, so that the microtube is reliably fixed relative to the sliding table 3. In a word, the precondition that the scheme can ensure that the microtubes obtained by tube breakage have good consistency is that the tip ports of the microtubes arranged on the sliding table can be aligned in advance or aligned by an additionally arranged tube arranging mechanism. As long as the microtube with the tip port capable of keeping in a relative alignment state is placed on the sliding table, the consistency of the length of the microtube obtained after the tube breakage can be ensured by implementing the tube breakage process by means of the scheme.

And on the workbench b, a sliding table structure can be arranged by referring to the workbench a, and a pulling mechanism matched with the sliding table structure is configured to move the microtube to the other side (the side deviating from the workbench a) of the workbench b after the cutting is finished so as to be grabbed by the feeding structure of the next process. The protrusion block a is arranged on the table top of the sliding table structure. When the pulling mechanism pulls the sliding table structure to move, the pressing block mechanism b can move synchronously with the sliding table structure.

As shown in fig. 1 to 6, a closed chamber is provided between the table a1 and the table b2, and includes an upper chamber body 61 and a lower chamber body 62. The cutting machine is fixedly mounted in the upper cavity 61 (see fig. 1 and 3 for a connecting structure), and the lower cavity 62 is communicated with the collection cavity 9. In the scheme shown in the figure, the cutting blade of the cutting machine can be lifted (in the direction of a plumb) to be close to or far away from the display tube.

The lower port of the upper cavity 61 is opposite to the upper port of the lower cavity 62, and a circle of elastic cushion 63 is respectively arranged outside the two ports. The elastic cushion 63 on the upper cavity 61 and the elastic cushion 63 on the lower cavity 62 can be lifted synchronously along with the cavities, so that the elastic cushion 63 on the upper cavity 61 and the elastic cushion 63 on the lower cavity 62 can be selectively close to and separated from each other. The cavity of the lower cavity 62 is a tapered cavity 621 with a downward necking end. As illustrated, the entire lower cavity 62 is funnel-shaped.

As shown in fig. 4 to 6, a sliding sleeve 611 is disposed on the periphery of the upper cavity 61, and an elastic cushion 63 (disposed on the upper cavity 61) is disposed on a lower end surface of the sliding sleeve 611. And a sealing ring is arranged between the sliding sleeve 611 and the wall surface of the upper cavity 61. The top surface of the upper cavity 61 is provided with a lifting motor a612 equipped with a wire lever, and the wire lever is matched with the sliding sleeve 611, so that the lifting motor a612 can drive the sliding sleeve 611 to lift, and the elastic cushion 63 arranged on the upper cavity 61 is lifted. In fig. 4, the upper chamber 61 may be fixed to the base or the tables 1, 2. In fig. 5, the upper chamber 61 is connected to a table b2 by a connecting frame b67 and can move along with a table b 2.

As shown in fig. 4 and 6, the lower chamber 62 is mounted between the working table a1 and the working table b2 through a connection rack a 66. As shown in fig. 5, the lower chamber 62 is mounted on the table b2 by a connecting bracket b 67.

The lower part of said lower chamber 62 is formed as a tubular element, the port of which communicates with said collection chamber 9 via a hose and the exterior of which is fitted with a connecting sleeve 64. The lower ends of the connecting frames a66 and b67 are provided with a lifting motor b65 equipped with a wire lever, wherein the wire lever is matched with the connecting sleeve 64, so that the lifting motor b65 can drive the lower cavity 62 to lift.

The microtube 100 passes through the space between the port of the upper cavity 61 and the port of the lower cavity 62, the elastic cushion 63 on the upper cavity 61 and the elastic cushion 63 on the lower cavity 62 can clamp the microtube 100 therebetween, and the two elastic cushions 6 can be pressed together (generate compression deformation) to form closed cavities of the upper and

lower cavities

61, 62.

The cavity of the lower cavity 62 is communicated with the collection cavity 9 through a hose. A fan 91 is connected to the collection chamber 9, and the fan 91 can suck the air flow in the closed chamber formed by the collection chamber 9 and the upper and

lower chambers

61, 62 to form negative pressure (air) flow. Fine glass particles generated during the cutting are drawn into the collection chamber 9 along with the air flow.

The glass fine particles generated in the pipe breaking process are directly taken away by means of air flow, and when a gap is cut in the pipe wall of the microtube (the section of the microtube in the closed cavity), external air can flow into the needle-shaped end to sweep the inner wall, so that a small amount of glass fine particles falling on the inner wall of the microtube are swept away.

With the fan 91 operating, a continuous air flow can be generated in the chamber formed by the two opposing

chambers

61, 62 and in the collecting chamber 9. The fine glass particles generated when the microtubes are cut are sucked away in time by the airflow and collected in the collection cavity 9, so that the fine glass particles can be reliably prevented from adhering to the inner walls of the microtubes, and the cleanness of the inner walls of the microtubes can be reliably ensured. When a slit is cut in the tube wall of the microtube, the suction action of the fan 91 flows into the inner wall of the gas flow purging tube from the tip port of the microtube, so that the fine glass particles attached near the cut port of the tube are cleaned.

Further, in the method of this patent, it is required to keep the display tube in a state where the axis line is inclined in the tube cutting operation and inclined from the needle-like end to the other end from the top to the bottom. The above device can be implemented by the following modifications.

As shown in fig. 5, the upper chamber 61 and the lower chamber 62 are mounted on the table b2 by a connecting frame b 67. The workbench a1 is matched with the base 10 by means of the supporting sliding table 11, and the base 10 is provided with a cylinder rod unit 12 (a pneumatic cylinder group or a hydraulic cylinder group or other linear transmission mechanism capable of driving the supporting sliding table to move by means of a push rod) capable of driving the supporting sliding table 11 to slide back and forth along a straight line, so that the workbench a1 can be selectively far away from and close to the workbench b 2. The workbench b2 is matched with the base 10 through the support table 22, a hydraulic cylinder a23 is matched at one end, close to the support sliding table 11, of the support table 22, and a hydraulic cylinder b24 is matched at one end, away from the support sliding table 11. The hydraulic cylinder a23 and the hydraulic cylinder b24 can keep the table top of the support table 22 in a horizontal state or a tilted state by controlling the extension and contraction of a cylinder rod of the hydraulic cylinder.

In the embodiment described in the above paragraph, after the tube breaking operation is completed for all the microtubes 100 placed on the slide table 3, the support slide table 11 is driven by the cylinder rod unit 12 to move to the left, so as to gradually remove the microtubes from the

cavities

61 and 62 near the cutting cross section of the slide table 3 (the elastic cushion 63 has a certain thickness, the elastic cushion 63 can deform and give way when clamping the microtubes to envelope the outer walls of the microtubes therein, and after the microtubes are removed from the finger space of the elastic cushion 63, the elastic cushion 63 can restore to the original shape to block the gap formed by clamping the microtubes). The other end of the cross-section (formed by the broken tube) remains in the

cavity

61, 62. The cylinder rod of the hydraulic cylinder b24 is extended and the cylinder rod of the hydraulic cylinder a23 is contracted, so that the workbench b2 is inclined towards the left side, and the axis of the microscopic tube obtained after the tube breaking is finished is inclined towards the lower left side, which is helpful for ensuring that the adhered fine glass particles are better cleaned.

As shown in fig. 4 to 6, the fan 91 is mounted on top of the collection chamber 9. The middle part of the collection cavity 9 is provided with a clapboard, and a cavernous body 93 is filled in the cavity above the clapboard. A connecting pipe 92 with one end connected with the lower cavity 62 and the other end extending to the lower part of the clapboard is arranged in the collection cavity 9. This structure can prevent fine glass particles sucked into the collection chamber 9 from flowing into the fan 91. Further, fluffy floccules such as cotton and absorbent cotton are filled in the cavity below the partition plate, so that glass fine particles sucked into the collecting cavity 9 can be enveloped in the floccules, the collecting cavity is cleaned conveniently, and the glass fine particles can be further prevented from flowing into the fan 91.

As shown in fig. 1 and 3, the upper chamber 61 is provided with a coding motor 7 configured with a wire lever, and an axial direction of the wire lever 71 is perpendicular to an axial direction of a display tube 100 disposed on the slide table 3.

The lower part of the slide block 72 arranged on the wire lever 71 is provided with a connecting seat 74, and the connecting seat 74 is provided with a sliding seat 75 and a first motor 76 driving the sliding seat 75 to reciprocate through a linear track. The moving direction of the slide carriage 75 coincides with the axial direction of the microscope 100 mounted on the slide table 3.

The sliding base 75 is connected to a bearing base bearing the cutter, and a driving unit (a second motor 77 is shown in the figure, and a lead screw transmission structure is matched on the second motor 77 to form a lead screw slider transmission mechanism with the bearing base) capable of driving the bearing base to ascend and descend is arranged on the sliding base 75.

The coding motor 7 drives the cutting machine to move along the front and back direction through a lead screw transmission unit formed by a screw lever 71 and a slide block 72, so that the cutting machine corresponds to the upper parts of the microtubes respectively. The first motor 76 drives the slide carriage 75 to move in the left-right direction (along the axis of the microscope tube) relative to the connecting base 74, thereby controlling the length of the microscope tube required for tube breakage. The second motor 77 controls the lifting of the carriage with respect to said slide 75 so that the cutting blades of the cutting machine can act on the wall of the microscope tube and on the wall of the tube remote from the microscope tube. The slide 72 is also provided with a set of guide rods 73 parallel to the wire lever 71, by means of which guide rods 73 the direction of movement of the slide 72 (or the connecting socket, the cutting machine) is guided.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Many modifications may be made to the present invention without departing from the spirit or scope of the general inventive concept, and it will be apparent to those skilled in the art that changes and modifications may be made to the above-described embodiments without departing from the spirit or scope of the invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A closed structure of a microtube cutting device is characterized in that: comprises an upper cavity and a lower cavity which are arranged oppositely up and down;

the lower port of the upper cavity is opposite to the upper port of the lower cavity, and a circle of elastic cushion layer is respectively arranged outside the two ports; the elastic cushion layer on the upper cavity body can lift along with the upper cavity body, the elastic cushion layer on the lower cavity body can lift along with the lower cavity body, and the elastic cushion layer on the upper cavity body and the elastic cushion layer on the lower cavity body are selectively close to and separated from each other;

the display micropipe passes through the space between the port of the upper cavity and the port of the lower cavity, the tube body can be clamped between the elastic cushion layers of the upper cavity and the lower cavity, and the elastic cushion layers are pressed together to enable the upper cavity and the lower cavity to be buckled and pressed to form a closed cavity; the cavity of the lower cavity is connected with a fan through a hose;

a workbench a and a workbench b for supporting the display micropipes are arranged on the left side and the right side of the lower cavity;

the upper cavity and the lower cavity are both arranged on the workbench b through a connecting frame;

the lower part of the lower cavity is formed into a tubular part, the port of the tubular part is communicated with the fan through a hose, and a connecting sleeve is matched outside the tubular part; the lower end of the connecting frame is provided with a lifting motor b provided with a screw lever to drive the lower cavity to lift;

the workbench a is matched with the base through the support sliding table, and the base is provided with a cylinder rod unit capable of driving the support sliding table to slide in a reciprocating manner along a straight line, so that the workbench a can be selectively far away from or close to the workbench b;

the workbench b is matched with the base by means of a support table, a hydraulic cylinder a is matched at one end, close to the support sliding table, of the support table, and a hydraulic cylinder b is matched at one end, away from the support sliding table, of the support table; the hydraulic cylinders a and b can keep the table top of the support table in a horizontal state or an inclined state.

2. A closure structure for a microtube cutting device according to claim 1, wherein: a collecting cavity is arranged between the lower cavity and a communicating pipeline of the fan; the fan is mounted atop the collection chamber.

3. A closure structure for a microtube cutting device according to claim 2, wherein: a partition plate is arranged in the middle of the collection cavity, and a cavernous body is filled in the cavity above the partition plate; a connecting pipe is arranged in the collecting cavity, one end of the connecting pipe is connected with the lower cavity, and the other end of the connecting pipe extends to the lower part of the partition plate; fluffy floccules are filled in the cavity below the partition plate.

4. A closure structure for a microtube cutting device according to claim 1, wherein: a sliding sleeve is arranged on the periphery of the upper cavity, and the elastic cushion layer is arranged on the lower end face of the sliding sleeve; a sealing ring is arranged between the sliding sleeve and the wall surface of the upper cavity; and a lifting motor a provided with a screw lever is arranged on the top surface of the upper cavity to drive the sliding sleeve to lift.

5. A method for cutting off a microtube based on the closed structure of the microtube cutting-off device of claim 1, which comprises the following steps:

a pipe arrangement process, wherein the operation of clamping the display microtube between the workbench a and the workbench b is completed;

in the tube delivery process, the operation that the tube body of the microscopic tube moves to the cutting piece and the needle-shaped end port of the microscopic tube at the moment has a preset axial distance from the cutting piece is completed;

the pipe cutting process is completed, and the operation that the cutting machine is started to cut the microtube into required length by the cutting blade is completed in the process;

and a tube taking process, wherein the operation of taking down the microscope tube from the workbench a and the workbench b or conveying the microscope tube to the next procedure is completed in the tube taking process;

in the pipe breaking operation, the cutting position of the display micropipe is firstly placed in a closed cavity formed by buckling an upper cavity body and a lower cavity body, a fan communicated with the closed cavity is started to form outward suction airflow in the closed cavity, and then a cutting machine is started to finish the pipe breaking operation.

6. A method for cutting a microscopic tube according to claim 5, wherein: completing the operation of clamping a plurality of microtubes between a workbench a and a workbench b and enabling the needle-shaped end ports of the microtubes to be relatively flush in the tube arranging process; in the tube conveying process, the operation that the tube bodies of all the microtubes synchronously move to the cutting blade and the needle-shaped end ports of the microtubes at the moment have preset axial intervals from the cutting blade is completed; in the tube breaking operation, the cutting positions of the respective display tubes are simultaneously placed into a closed cavity or are sequentially placed into a closed cavity.

7. The method for cutting off the microtube according to claim 5 or 6, wherein: the tube breaking operation keeps the display tube in a state of inclining downwards and inclining from the needle-shaped end to the other end from top to bottom.

8. The method for cutting off the microtube according to claim 5 or 6, wherein: and a collecting cavity is arranged between the closed cavity and the communicating pipeline of the fan, and fluffy floccules are filled in the collecting cavity.