Pipe cutter for metal chromatographic pipe

Abstract

The utility model discloses a pipe cutter for metal chromatographic pipe, including base, cutting knife and bearing subassembly, the base is equipped with the groove cavity that runs through its opposite side surface, cutting knife is provided on the base and partially extends into the groove cavity, the bearing subassembly is provided on the base and can penetrate into the groove cavity in the mode of opposite to cutting knife, and the bearing subassembly is equipped with the groove cavity. Therefore, the bearing assembly and the cutting knife are in tangent abutting connection with a to-be-cut pipe inserted between the bearing assembly and the cutting knife. And at the time, the base or the to-be-cut pipe is rotated by applying external force, so that the to-be-cut pipe can be cut. The pipe cutter is simple in structure, small and exquisite in size, easy to control and carry, capable of effectively avoiding the phenomena of surface abrasion, pipe hole blockage and the like when the pipe is cut, capable of greatly improving the cutting quality of the pipe, and capable of being well applied to cutting operation of stainless steel chromatographic pipes and capillary pipes.

Description

Technical Field

[0001] This utility model relates to the technical field of pipe cutting tools, and in particular to a pipe cutter for metal chromatography tubes. Background Technology

[0002] Currently, when cutting stainless steel chromatography tubes and capillaries with a size of 1 / 16 inch, due to design limitations of existing tube cutters, problems such as friction damage to the tube wall and blockage of the tube hole often occur after cutting, resulting in a high tube loss rate and failing to meet the usage requirements.

[0003] In view of the above, this utility model is hereby proposed. Summary of the Invention

[0004] To overcome the above-mentioned defects, this utility model provides a tube cutter for metal chromatography tubes. It has a simple structure, small size, and is easy to operate and carry. It can effectively avoid surface wear and tube hole blockage during tube cutting, greatly improving the cutting quality of the tube. It can be well applied to the cutting of stainless steel chromatography tubes and capillaries.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a tube cutter for metal chromatography tubes, including a base, a cutting blade, and a bearing assembly. The base is provided with a groove extending through its opposite sides. The cutting blade is disposed on the base and partially extends into the groove. The bearing assembly is disposed on the base and can be inserted into the groove in a manner opposite to the cutting blade, so as to achieve tangential contact between the bearing assembly and the cutting blade and the tube to be cut inserted between them. At that time, by applying an external force to rotate the base or the tube to be cut, the tube to be cut can be cut.

[0006] As a further improvement of this utility model, a driving component is also provided, which can drive the bearing assembly to move toward the cutting blade.

[0007] As a further improvement of this utility model, the bearing assembly and the cutting blade are defined to be arranged opposite each other along a first direction;

[0008] The driving component includes an adjusting component and a transmission component. The adjusting component is disposed on the base with one end inserted into the base and the other end extending out of the base, and the other end of the adjusting component is used as an operating end. The transmission component is slidably disposed in the base along the first direction, and one end of the transmission component is connected to the bearing assembly, and the other end of the transmission component can abut against one end of the adjusting component, or the other end of the transmission component is connected to one end of the adjusting component.

[0009] As a further improvement of this utility model, a receiving cavity extending along the first direction is provided inside the base. The receiving cavity opens on the inner surface of the groove and the outer surface of the base on opposite sides along the first direction to form through holes A and through holes B respectively. The receiving cavity is further divided into cavity A near through hole A and cavity B near through hole B. The inner surface of cavity A is a smooth surface and the inner surface of cavity B is a threaded surface.

[0010] The transmission component has a main body that is slidably disposed in the cavity A and a pair of lugs arranged side by side on one end of the main body facing the cavity. The pair of lugs are used for mounting the bearing assembly, and the pair of lugs can freely pass through the through hole A and enter the cavity.

[0011] As a further improvement of this utility model, the adjusting member is provided with an adjusting screw and an adjusting handwheel. One end of the adjusting screw is inserted into the cavity B through the through-hole B, and the other end is placed outside the through-hole B. The adjusting screw is also threadedly connected to the cavity B. The adjusting handwheel is fixedly disposed on the other end of the adjusting screw and can drive the adjusting screw to move toward the transmission member so that one end of the adjusting screw abuts against the main body.

[0012] As a further improvement of this utility model, the adjusting component is provided with an adjusting screw and an adjusting handwheel. The adjusting handwheel is inserted into the cavity B through the through-hole B and is threadedly connected to the cavity B. The adjusting screw is movably inserted through the adjusting handwheel, and one end of the adjusting screw is threadedly connected to the main body, while the other end of the adjusting screw can form an abutting fit with the adjusting handwheel.

[0013] As a further improvement of this utility model, the bearing assembly is provided with two sets of bearing strings, each bearing string consisting of a connecting shaft extending along the second direction and at least two ball bearings coaxially sleeved on the connecting shaft, and the two sets of bearing strings are also arranged side by side along the third direction between a pair of lugs to lock and rotate the tube to be cut; wherein, the first direction, the second direction and the third direction are perpendicular to each other.

[0014] As a further improvement of this utility model, a limiting member is also provided, which can limit the movement of the bearing assembly toward the cutting blade.

[0015] As a further improvement of this utility model, the limiting member is positioned in the groove cavity and close to the through hole A, and the limiting member is provided with a through hole arranged concentrically with the through hole A and allowing a pair of lugs to pass freely through, and the limiting member can stop and restrict the main body.

[0016] As a further improvement of this utility model, the groove is a U-shaped cavity structure, and one side of the base is divided into a first bifurcation and a second bifurcation;

[0017] The cutting blade is a circular blade and is fixedly mounted on the first bifurcation via a threaded pin; the drive component and the bearing assembly are both mounted on the second bifurcation.

[0018] The beneficial effects of this utility model are as follows: This utility model innovatively provides a tube cutter for metal chromatography tubes, which not only effectively avoids surface wear during tube cutting, but also effectively prevents tube blockage caused by excessive rotation and compression of the tube by the cutting blade, thereby greatly improving the cutting quality of the tube. It can be well applied to the cutting of 1 / 16-inch stainless steel chromatography tubes and capillaries. In addition, the tube cutter described in this utility model also has the advantages of simple structure, small size, easy operation and portability, and is highly practical. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the tube cutter for metal chromatography tubes described in Embodiment 1 of this utility model;

[0020] Figure 2 for Figure 1 A top view of the pipe cutter shown in the diagram;

[0021] Figure 3 for Figure 1 A schematic cross-sectional view of the pipe cutter shown in the diagram;

[0022] Figure 4 for Figure 1 A schematic diagram of the base shown in the image from a first-view perspective;

[0023] Figure 5 for Figure 1 A schematic diagram of the base shown in the image from a second perspective;

[0024] Figure 6 for Figure 1 A schematic diagram of the cross-sectional structure of the base shown;

[0025] Figure 7 for Figure 3 The diagram shows the structure when the drive component and bearing assembly are assembled together.

[0026] Figure 8 This is a three-dimensional structural diagram of the tube cutter for metal chromatography tubes described in Embodiment 2 of this utility model;

[0027] Figure 9 for Figure 8 A schematic cross-sectional view of the pipe cutter shown in the diagram;

[0028] Figure 10 for Figure 8 A schematic diagram of the base shown in the image from a first-view perspective;

[0029] Figure 11 for Figure 8 A schematic diagram of the base shown in the image from a second perspective;

[0030] Figure 12 for Figure 8 A schematic diagram of the cross-sectional structure of the base shown;

[0031] Figure 13 for Figure 9 The diagram shows the structure when the drive component and bearing assembly are assembled together.

[0032] Referring to the accompanying drawings, the following explanations are provided:

[0033] 1. Base; 10. Groove; 100. Slot; 11. Receiving cavity; 110. Through-hole A; 111. Through-hole B; 112. Cavity A; 113. Cavity B; 12. First branch; 13. Second branch; 2. Cutting blade; 20. Threaded pin; 3. Bearing assembly; 30. Bearing string; 300. Ball bearing; 40. Adjusting screw; 400. Head end A; 401. Rod part A; 41. Transmission component; 410. Main body; 411. Lug; 412. Arc-shaped groove; 42. Adjusting handwheel; 420. Head end B; 421. Rod part B; 5. Limiting component. Detailed Implementation

[0034] The preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0035] Example 1:

[0036] Please see the appendix Figure 1 To be continued Figure 7 As shown, this embodiment 1 provides a tube cutter for cutting metal (stainless steel) chromatography tubes and capillaries. The tube cutter includes a base 1, a cutting blade 2, and a bearing assembly 3. The base 1 has a groove 10 extending through its opposite sides, which is used as the tube cutting area. The cutting blade 2 is disposed on the base 1 and partially extends into the groove 10. The bearing assembly 3 is disposed on the base 1 and can be inserted into the groove 10 in a manner opposite to the cutting blade 2, so that the bearing assembly 3 and the cutting blade 2 respectively tangentially abut against the tube to be cut inserted between them. At that time, by applying an external force to rotate the base 1 or the tube to be cut, the tube to be cut can be cut.

[0037] The following provides a detailed description of the specific structure and working principle of the metal chromatography tube cutter described in Example 1.

[0038] Please continue to refer to the appendix. Figure 1 To be continued Figure 6 As shown, in the pipe cutter structure described in Embodiment 1, the base 1 is an elliptical or circular disc-shaped structure with grooves, made of 316L stainless steel, and is relatively small in size. For example, the diameter of the circular disc-shaped structure is designed to be 40mm. This makes it easy for the user to hold the base 1 with one hand, and because the shape of the base 1 conforms to ergonomics, the user's comfort in holding and operating the base 1 is very high. In addition, to improve the wear resistance and oxidation resistance of the base 1, a protective film, such as nickel or chromium, is plated on the surface of the base 1. To facilitate the assembly of the pipe cutter, the grooves 10 on the base 1 are further preferably designed as U-shaped cavity structures, as shown in the attached figure. Figure 1 and attached Figure 4 As shown, through the U-shaped cavity 10, one side of the base 1 is divided into a first bifurcation 12 and a second bifurcation 13 arranged opposite to each other. The first bifurcation 12 has a bifurcation structure and communicates with the cavity 10. (See attached diagram.) Figure 2 and attached Figure 5 As shown, this facilitates the mounting of the cutting blade 2 onto the first forked portion 12 while also allowing a portion of the cutting blade 2 to extend into the groove cavity 10; the second forked portion 13 is a block structure used for mounting the bearing assembly 3 and other components, as shown in the attached diagram. Figure 3 and attached Figure 4 As shown.

[0039] Furthermore, in this embodiment 1, the specific implementation of mounting the cutting blade 2 on the first forked portion 12 is as follows: Please refer to the attached document. Figure 2 Appendix Figure 3 and attached Figure 5 As shown, the cutting blade 2 is a circular blade made of high-hardness alloy steel and is fixedly mounted on the first forked portion 12 by a threaded pin 20. A portion of the cutting blade 2 extends into the groove 10 so as to cut the pipe inserted into the groove 10.

[0040] The specific implementation method for mounting the bearing assembly 3 on the second bifurcation portion 13 and allowing it to penetrate the groove cavity 10 in a manner opposite to the cutting blade 2 is as follows: Please refer to the appendix. Figure 3 To be continued Figure 6As shown, in this embodiment 1, a receiving cavity 11 extending along a first direction is provided inside the second bifurcation portion 13 of the base 1. The receiving cavity 11 opens onto the inner surface of the groove 10 and the outer surface of the second bifurcation portion 13 on opposite sides along the first direction, respectively forming through-holes A110 and B111. It can be understood that through-hole A110 is formed on the inner surface of the groove 10, and through-hole B111 is formed on the outer surface of the second bifurcation portion 13. Simultaneously, the receiving cavity 11 is divided into a cavity A112 near through-hole A110 and a cavity B113 near through-hole B111. The inner surface of cavity A112 is a smooth surface, and the inner surface of cavity B113 is a threaded surface. Additionally, this embodiment 1 also includes a driving component; please refer to the appendix for further details. Figure 3 and attached Figure 7 As shown, the driving component includes an adjusting component and a transmission component 41. The adjusting component is provided with an adjusting screw 40 and an adjusting handwheel 42. One end of the adjusting screw 40 is inserted into the cavity B113 through the through-hole B111, and the other end of the adjusting screw 40 extends out of the through-hole B111. The adjusting screw 40 is also threadedly connected to the cavity B113 (that is, the adjusting screw 40 is threadedly connected to the cavity B113 with one end inserted into the cavity B113 and the other end extending out of the cavity B113, i.e., the adjusting screw 40 is screwed onto the second forked portion 13 / the base 1). The adjusting handwheel 42 is also fixedly provided on the other end of the adjusting screw 40 for user operation, i.e., the adjusting handwheel 42 is used as the operating end / or referred to as... Operating unit; the transmission member 41 is slidably disposed in the cavity A112 of the second bifurcation 13 along the first direction, and the end of the transmission member 41 facing the slot 10 is connected to the bearing assembly 3; when the user operates the adjusting handwheel 42 to rotate forward, it can drive the adjusting screw 40 to move toward the slot 10 (that is, toward the transmission member 41), and when one end of the adjusting screw 40 abuts against the other end of the transmission member 41 facing away from the slot 10, the adjusting screw 40 can drive the transmission member 41 and the bearing assembly 3 to move together toward the slot 10, so that the bearing assembly 3 can be inserted into the slot 10 and arranged opposite to the cutting blade 2, thereby realizing that the bearing assembly 3 and the cutting blade 2 respectively tangentially abut against the tube to be cut inserted between them. As can be understood, in this embodiment 1, after the second forked portion 13 of the base 1 is designed as described above, and by using the driving component described above, the bearing assembly 3 can be driven to move toward the cutting blade 2, thereby enabling the bearing assembly 3 and the cutting blade 2 to cooperate in tangential clamping of the pipe.

[0041] As can be seen from the above, ① the bearing assembly 3 and the cutting blade 2 are configured to be arranged opposite each other along the first direction.

[0042] ② Because there is no direct connection between the adjusting screw 40 and the transmission component 41, when the user operates the adjusting handwheel 42 to rotate in the opposite direction to drive the adjusting screw 40 to move away from the slot cavity 10, the adjusting screw 40 will not drive the transmission component 41 to move together. However, since the transmission component 41 is slidably disposed in the cavity A112, and according to the product assembly requirements, both the transmission component 41 and the cavity A112 are coated with grease, the sliding of the transmission component 41 in the cavity A112 is relatively easy. Of course, because the pipe cutter is small in size and light in weight, the transmission component 41 is also easily pushed by external force. Therefore, when the pipe is inserted between the bearing assembly 3 and the cutting blade 2, the pipe can easily push the bearing assembly 3 to move away from the cutting blade 2 to ensure that the pipe can be inserted between the two.

[0043] ③ Since there is no direct connection between the adjusting screw 40 and the transmission component 41, in order to prevent the transmission component 41 from falling out of the cavity A112 and to limit the displacement of the bearing assembly 3, this embodiment 1 also provides a limiting component 5 that can limit the movement of the bearing assembly 3 toward the cutting blade 2. For details, please refer to the appendix. Figure 1 and attached Figure 3 As shown, the limiting member 5 is a block structure positioned within the cavity 10 and close to the through-hole A110. Furthermore, the limiting member 5 has a through-hole (not shown in the figure, but this does not affect the understanding) concentrically arranged with the through-hole A110, allowing the bearing assembly 3 and one end of the transmission member 41 to pass freely. The limiting member 5 can also restrict other parts of the transmission member 41. It is understood that the limiting member 5 restricts the transmission member 41 and the bearing assembly 3 by allowing one end of the transmission member 41 to pass through, but not allowing other parts of the transmission member 41 to pass through.

[0044] Furthermore, the specific implementation method for positioning the limiting member 5 within the groove cavity 10 in this embodiment 1 is as follows: Please refer to the appendix. Figure 3 To be continued Figure 6 As shown, a slot 100 is provided in the cavity 10 and near the through opening A110. The limiting member 5 is inserted into the slot 100 and is simultaneously connected to the inner wall of the cavity 10 by a pin or other fixing method.

[0045] The specific implementation method for enabling the limiting member 5 to stop and restrict other parts of the transmission member 41 is as follows: Please refer to the appendix. Figure 7 As shown, the transmission component 41 has a cylindrical main body 410 that is slidably disposed in the cavity A112 and a pair of lugs 411 that are integrally formed and arranged side by side on one end of the main body 410 facing the groove 10. The pair of lugs 411 are used for mounting the bearing assembly 3, and the pair of lugs 411 can pass freely through the through hole A110 and the through hole in sequence and enter the groove 10. The outer diameter of the main body 410 is smaller than the inner diameter of the through hole A110 and larger than the inner diameter of the through hole, so that the limiting component 5 can stop and restrict the main body 410.

[0046] Please continue to refer to the appendix. Figure 2 Appendix Figure 3 and attached Figure 7 As shown, in the structure of the metal chromatography tube cutter described in Embodiment 1, the bearing assembly 3 adopts the following structure: the bearing assembly 3 is provided with two sets of bearing strings 30, each bearing string 30 consisting of a connecting shaft extending along the second direction and at least two ball bearings 300 (preferably miniature deep groove ball bearings) coaxially sleeved on the connecting shaft, and the two sets of bearing strings 30 are also arranged side by side along the third direction between a pair of lugs 411 to clamp and guide the tube to be cut; wherein, the first direction, the second direction and the third direction are perpendicular to each other.

[0047] Understandably, a locking space / or locking gap is formed between the two sets of bearing strings 30 to lock, straighten, and guide the rotation of the metal chromatographic tube, capillary tube, or other tubing. In addition, to facilitate the locking function of the bearing assembly 3, arc-shaped grooves 412 that mate with the aforementioned locking space are provided on a pair of lugs 411 of the transmission member 41.

[0048] Based on the above description of the specific structure of the tube cutter for metal chromatography tubes, the working principle / method of the tube cutter is as follows: First, the tube to be cut is clamped in the clamping space formed on the bearing assembly 3. Then, the driving component is operated to drive the bearing assembly 3 to move toward the cutting blade 2 until the tube to be cut is tightly tangentially abutted against the clamping space and the cutting blade 2. It can be understood that at this time, the tube to be cut only contacts the surface of the ball bearing 300 and the cutting blade 2, and has no contact with the base 1 and the limiting component 5, thereby effectively avoiding surface wear and other defects in the tube during subsequent cutting. Subsequently, by rotating the tube to be cut or the base 1, a cut of appropriate depth can be processed on the tube. At this time, the tube can be removed and divided into two sections.

[0049] As described above, by using the aforementioned metal chromatography tube cutter, not only can surface wear during tube cutting be effectively avoided, but also tube clogging caused by excessive rotation and compression of the cutting blade can be effectively prevented, thereby greatly improving the cutting quality of the tube. Therefore, the tube cutter provided in Embodiment 1 can be well applied to the cutting of 1 / 16-inch stainless steel chromatography tubes and capillaries. In addition, the tube cutter also has the advantages of simple structure, small size, easy operation and portability, and is highly practical.

[0050] Example 2:

[0051] Please see the appendix Figure 8 To be continued Figure 13 As shown, this embodiment 2 also provides a tube cutter for metal chromatography tubes. Compared with embodiment 1, the tube cutter provided in embodiment 2 differs in the following ways: ① The shape of the base 1 is different from that in embodiment 1. ② The specific implementation structure of the driving component is different from that in embodiment 1.

[0052] Regarding the above distinction ①, please refer to the appendix. Figure 8 To be continued Figure 12 As shown in this embodiment 2, the base 1 is a rectangular block structure with grooves made of 316L stainless steel and has a small volume. For example, the length of the rectangular block structure is designed to be 62mm and the width is designed to be 30mm. This makes it easy for the user to hold the base 1 with one hand and provides a very high level of comfort when holding and operating the base 1.

[0053] In addition, similar to Embodiment 1, in the base 1 structure described in Embodiment 2, the groove 10 is also designed as a U-shaped cavity structure, as shown in the attached drawing. Figure 10 To be continued Figure 12 As shown; one side of the base 1 is divided into a first bifurcation 12 and a second bifurcation 13 arranged opposite to each other, wherein the first bifurcation 12 has a bifurcation structure and communicates with the groove cavity 10, as shown in the attached drawing. Figure 10 and attached Figure 11 As shown, this facilitates the mounting of the cutting blade 2 onto the first forked portion 12 while also allowing a portion of the cutting blade 2 to extend into the groove cavity 10; the second forked portion 13 is a block structure used for mounting the bearing assembly 3 and the drive component, as shown in the attached diagram. Figure 9 and attached Figure 10As shown; and, a receiving cavity 11 extending along a first direction is provided inside the second bifurcation 13. The receiving cavity 11 opens onto the inner surface of the slot cavity 10 and the outer surface of the second bifurcation 13 on opposite sides along the first direction, respectively, to form a through-hole A110 and a through-hole B111. Simultaneously, the receiving cavity 11 is divided into a cavity A112 near the through-hole A110 and a cavity B113 near the through-hole B111. The inner surface of cavity A112 is a smooth surface, and the inner surface of cavity B113 is a threaded surface. (See attached drawing.) Figure 10 To be continued Figure 12 As shown.

[0054] Regarding point ② above, please refer to the appendix. Figure 9 and attached Figure 13 As shown, in this embodiment 2, the driving component includes an adjusting component and a transmission component 41. The adjusting component is provided with an adjusting screw 40 and an adjusting handwheel 42. The adjusting screw 40 has a head end A400 and a rod portion A401. The adjusting handwheel 42 is a hollow structure with a head end B420 and a rod portion B421. The adjusting handwheel 42 is inserted into the cavity B113 through the through-hole B111 and is threadedly connected to the cavity B113. Specifically, the rod portion B400... 21 is threadedly connected to the cavity B113; the adjusting screw 40 is movably inserted into the adjusting handwheel 42, specifically, the rod portion A401 is movably inserted into the rod portion B421, the head end A400 is movably placed in the head end B420, and the head end A400 can form an abutting fit with the head end B420; the transmission member 41 can be slidably disposed in the cavity A112 along the first direction, and the transmission member 41 faces the groove. One end of cavity 10 is connected to the bearing assembly 3, and the other end of the transmission member 41 facing away from the cavity 10 is threadedly connected to one end of the adjusting screw 40 (specifically, one end of the rod portion A401). When the user operates the adjusting handwheel 42 to rotate forward, the rod portion B421 of the adjusting handwheel 42 can push the transmission member 41 and the bearing assembly 3 together toward the cavity 10, so that the bearing assembly 3 can be inserted into the cavity 10 and arranged opposite to the cutting blade 2, that is, the bearing assembly 3 and the cutting blade 2 can respectively tangentially abut against the tube to be cut placed between them. When the user operates the adjusting handwheel 42 to rotate in the opposite direction, through the abutting relationship between the head end B420 and the head end A400, the adjusting handwheel 42 can drive the adjusting screw 40 to move away from the cavity 10 as a whole, thereby driving the transmission member 41 and the bearing assembly 3 to move away from the cavity 10 together.

[0055] In addition, regarding the transmission component 41 in this embodiment 2, its implementation structure can be as follows: the transmission component 41 is provided with a main body 410 (cylindrical shape) slidably disposed in the cavity A112 and a pair of lugs 411 integrally disposed side by side on one end of the main body 410 facing the groove 10. The main body 410 is threadedly connected to one end of the rod A401 of the adjusting screw 40. The pair of lugs 411 are used for the installation of the bearing assembly 3, and the pair of lugs 411 can freely pass through the through hole A110 and enter the groove 10.

[0056] Apart from the differences mentioned above, other structures in the pipe cutter described in Embodiment 2, such as the cutting blade 2, the bearing assembly 3, and the limiting member 5, can all adopt the same technical means as in Embodiment 1, and therefore will not be described in detail here.

[0057] Understandably, the metal chromatography tube cutter described in this embodiment 2 is also simple in structure, small in size, easy to operate and carry, and can effectively avoid surface wear and tube hole blockage during tube cutting, greatly improving the cutting quality of the tube. It can be well applied to the cutting of stainless steel chromatography tubes and capillaries with a size of 1 / 16in.

[0058] Finally, the prefixes "first," "second," etc. (e.g., first bifurcation, second bifurcation), and the suffixes "A," "B," etc. (e.g., through-hole A, through-hole B) in the component names of this utility model patent specification are only for the purpose of clarity of description and are not intended to limit the scope of implementation of this utility model patent.

[0059] Many specific details have been set forth in the above description to provide a full understanding of this utility model. However, the above description is only a preferred embodiment of this utility model, and this utility model can be implemented in many other ways different from those described herein. Therefore, this utility model is not limited to the specific embodiments disclosed above. Furthermore, any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model using the methods and techniques disclosed above, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, shall still fall within the protection scope of the technical solution of this utility model.

Claims

1. A tube cutter for metal chromatography tubes, characterized in that: The device includes a base (1), a cutting blade (2), and a bearing assembly (3). The base (1) has a groove (10) extending through its opposite sides. The cutting blade (2) is disposed on the base (1) and partially extends into the groove (10). The bearing assembly (3) is disposed on the base (1) and can be inserted into the groove (10) in a manner opposite to the cutting blade (2), so that the bearing assembly (3) and the cutting blade (2) respectively tangentially abut against the tube to be cut inserted between them. At that time, by applying an external force to rotate the base (1) or the tube to be cut, the tube to be cut can be cut.

2. The metal chromatography tube cutter of claim 1, wherein: It is also provided with a drive unit that can drive the bearing assembly (3) to move toward the cutting blade (2).

3. The metal chromatography tube cutter of claim 2, wherein: The bearing assembly (3) and the cutting blade (2) are defined to be arranged opposite each other along a first direction; The driving component includes an adjusting component and a transmission component (41). The adjusting component is disposed on the base (1) with one end inserted into the base (1) and the other end extending out of the base (1), and the other end of the adjusting component is used as an operating end. The transmission component (41) is slidably disposed in the base (1) along the first direction, and one end of the transmission component (41) is connected to the bearing assembly (3), and the other end of the transmission component (41) can abut against one end of the adjusting component, or the other end of the transmission component (41) is connected to one end of the adjusting component.

4. The metal chromatography tube cutter of claim 3, wherein: A receiving cavity (11) extending along the first direction is provided inside the base (1). The receiving cavity (11) opens on the inner surface of the slot cavity (10) and the outer surface of the base (1) on opposite sides along the first direction to form through holes A (110) and through holes B (111). The receiving cavity (11) is also divided into cavity A (112) close to through hole A (110) and cavity B (113) close to through hole B (111). The inner surface of cavity A (112) is a smooth surface, and the inner surface of cavity B (113) is a threaded surface. The transmission component (41) has a main body (410) slidably disposed in the cavity A (112) and a pair of lugs (411) arranged side by side on one end of the main body (410) facing the groove (10). The pair of lugs (411) are used for mounting the bearing assembly (3), and the pair of lugs (411) can freely pass through the through hole A (110) and enter the groove (10).

5. The metal chromatography tube cutter of claim 4, wherein: The adjusting component is provided with an adjusting screw (40) and an adjusting handwheel (42). One end of the adjusting screw (40) is inserted into the cavity B (113) through the through-hole B (111), and the other end is placed outside the through-hole B (111). The adjusting screw (40) is also threadedly connected to the cavity B (113). The adjusting handwheel (42) is fixedly disposed on the other end of the adjusting screw (40) and can drive the adjusting screw (40) to move toward the transmission component (41) so that one end of the adjusting screw (40) abuts against the main body (410).

6. The metal chromatography tube cutter of claim 4, wherein: The adjusting component is provided with an adjusting screw (40) and an adjusting handwheel (42). The adjusting handwheel (42) is inserted into the cavity B (113) through the through-hole B (111) and is threadedly connected to the cavity B (113). The adjusting screw (40) is movably inserted into the adjusting handwheel (42), and one end of the adjusting screw (40) is threadedly connected to the main body (410). The other end of the adjusting screw (40) can form an abutting fit with the adjusting handwheel (42).

7. The metal chromatography tube cutter of claim 4, wherein: The bearing assembly (3) is provided with two sets of bearing strings (30), each bearing string (30) consists of a connecting shaft extending along the second direction and at least two ball bearings (300) coaxially sleeved on the connecting shaft, and the two sets of bearing strings (30) are also arranged side by side along the third direction between a pair of lugs (411) to clamp and rotate the tube to be cut; wherein, the first direction, the second direction and the third direction are perpendicular to each other.

8. The metal chromatography tube cutter of claim 4, wherein: It is also provided with a limiting member (5) that can limit the movement of the bearing assembly (3) toward the cutting blade (2).

9. The metal chromatography tube cutter of claim 8, wherein: The limiting member (5) is positioned in the cavity (10) and close to the through hole A (110). The limiting member (5) is provided with a through hole arranged concentrically with the through hole A (110) and allowing a pair of lugs (411) to pass through freely. The limiting member (5) can stop and restrict the main body (410).

10. The metal chromatography tube cutter of claim 4, wherein: The groove (10) has a U-shaped cavity structure, and one side of the base (1) is divided into a first bifurcation (12) and a second bifurcation (13); The cutting blade (2) is a circular blade and is fixedly mounted on the first fork (12) by a threaded pin (20); the driving component and the bearing assembly (3) are both mounted on the second fork (13).

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