Pipe cutting tool

Abstract

The utility model relates to the technical field of pipe cutting, and discloses a pipe cutting tool which comprises a bottom plate, a first counter bore is formed in the bottom plate, a positioning block is fixed to the bottom plate through a bolt, the positioning block is provided with a positioning part, a second counter bore is formed in the positioning part, magnets are bonded in the first counter bore and the second counter bore, the positioning part abuts against a die, and a blind hole is formed in the die. And magnets are bonded in the blind holes. According to the pipe cutting tool, when a mold is installed on the bottom plate, the mold only needs to be placed in the positioning block and positioned through the positioning part, magnets in the first counter bore and the second counter bore attract magnets in the blind hole, the mold is fixed through magnetic attraction, installation of the mold is completed, and the magnetic attraction fixing mode replaces a traditional bolt fixing mode; and when the dies of different specifications are replaced, the operation is simpler, the replacement speed is higher, and the efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe cutting, in particular to a pipe cutting tool. Background Art

[0002] Medical catheters are essential consumables for various surgical operations and intubation operations. They are a type of tubing that can be inserted into or outside the human body for disease diagnosis or treatment. In the production process of medical devices, medical catheters are usually made of thin-walled tubes made of polymer materials. The thin-walled tubes need to be cut into different lengths. There are usually two ways of cutting: manual cutting and cutting with a cutting machine. During the manual cutting process, it is difficult for the cut end face to be perpendicular to the central axis of the thin-walled tube. Especially in the process of cutting thin-walled tubes, the tube is first flattened and then cut off, resulting in deformation of the cut end face and poor cutting accuracy, which affects the smoothness of subsequent assembly operations. In order to ensure excellent cutting effects, a cutting machine is generally used instead of manual cutting.

[0003] The cutting machine in the prior art needs to separately make molds with matching holes for pipes of different outer diameters. Usually, in order to meet the pipe cutting requirements, each cutting machine will match molds of multiple specifications (that is, the outer dimensions of the mold remain unchanged, the cutting groove positions are the same, but the inner diameters of the pipe holes are different), and the molds need to be fixed to the base plate with bolts. Each time the mold is replaced, it needs to be re-centered, and the positioning is difficult and time-consuming, resulting in the mold replacement operation being very cumbersome and time-consuming. Utility Model Content

[0004] The purpose of the utility model is to provide a pipe cutting tool to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pipe cutting tool, comprising: a base plate, the base plate having a first countersunk hole, the base plate being fixed with a positioning block by bolts, the positioning block being provided with a positioning portion, the positioning portion having a second countersunk hole, magnets being bonded in the first countersunk hole and the second countersunk hole, the positioning portion being abutted against a mold, the mold having a blind hole, and the magnet being bonded in the blind hole.

[0006] Preferably, the bottom plate is fixed with a cutter by bolts, and the cutter is provided with a blade.

[0007] Preferably, the positioning portion includes a first positioning portion on a long side and a second positioning portion on a short side.

[0008] Preferably, the mold is provided with a first contact surface adapted to the first positioning portion, and a second contact surface adapted to the second positioning portion.

[0009] Preferably, the first contact surface is the left side surface of the mold.

[0010] Preferably, the second contact surface is the rear side surface of the mold.

[0011] Preferably, the positioning block is L-shaped.

[0012] Preferably, a cutting groove is provided downwardly from the top of the mold.

[0013] Preferably, a tube hole is provided through one side of the mold.

[0014] Preferably, a thread groove is provided on the right side of the mold.

[0015] The pipe cutting tool has the following beneficial effects:

[0016] When installing the mold on the bottom plate of the pipe cutting tool, the mold only needs to be placed in the positioning block and positioned through the positioning part. The magnets in the first countersunk hole and the second countersunk hole and the magnet in the blind hole attract each other, and the mold is fixed by magnetic attraction to complete the installation of the mold. The magnetic attraction fixing method replaces the traditional bolt fixing method, making it easier to operate when replacing molds of different specifications, faster and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of a pipe cutting tool provided in an embodiment of the present application;

[0018] Figure 2 A right side view of the pipe cutting tool provided in an embodiment of the present application;

[0019] Figure 3 An exploded view of the pipe cutting tool provided in an embodiment of the present application;

[0020] Figure 4 for Figure 3 Schematic diagram of the midsole plate;

[0021] Figure 5 for Figure 3 Schematic diagram of the positioning block;

[0022] Figure 6 for Figure 3 Left side view of the middle mold;

[0023] Figure 7 for Figure 3 Right side view of the mold.

[0024] In the figure: 1, bottom plate; 11, first countersunk hole; 2, cutting machine; 21, blade; 3, positioning block; 31, first positioning part; 32, second positioning part; 33, second countersunk hole; 4, mold; 41, cutting groove; 42, pipe hole; 43, first contact surface; 44, second contact surface; 45, blind hole; 46, threaded groove; 5, first mounting hole; 6, second mounting hole. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1-Figure 4 As shown, the utility model provides an embodiment of a pipe cutting tool, comprising: a base plate 1, a first mounting hole 5 is formed in the base plate 1, a cutter 2 is fixed to the first mounting hole 5 of the base plate 1 by bolts, and the cutter 2 is provided with a blade 21.

[0027] Among them, Figure 4-Figure 5 As shown, the base plate 1 also has a first countersunk hole 11 and a second mounting hole 6, and a positioning block 3 is fixed to the base plate 1 at the second mounting hole 6 by bolts, and a second mounting hole 6 is provided at the bottom of the positioning block 3 to match the position of the second mounting hole 6 on the base plate 1.

[0028] Specifically, the positioning block 3 is L-shaped, and the positioning block 3 is provided with a positioning portion, the positioning portion includes a first positioning portion 31 on the long side and a second positioning portion 32 on the short side, the first positioning portion 31 and the second positioning portion 32 both have a second countersunk hole 33, and magnets (not shown in the figure) are bonded in the first countersunk hole 11 and the second countersunk hole 33, the magnets are button-shaped strong magnets, and the glue bonding the magnets does not exceed the outer surface of the base plate 1 and the outer surface of the positioning block 3 to avoid affecting the final positioning accuracy.

[0029] like Figure 1 , Figure 6-Figure 7 As shown, the positioning portion abuts against the mold 4, and the abutting surface on the positioning portion is the positioning surface, which is used to locate the position of the mold 4. A cutting groove 41 is downwardly provided on the top of the mold 4, and the cutting groove 41 and the blade 21 are located in the same vertical plane. A tube hole 42 is provided through one side of the mold 4, and the inner diameter of the tube hole 42 is designed according to the outer diameter of the thin-walled tube so that the thin-walled tube can pass through the tube hole 42. A threaded groove 46 is provided on the right side of the mold 4, and the threaded groove 46 can be connected to a handle (not shown in the figure), through which the mold 4 can be removed from the base plate 1.

[0030] Specifically, the mold 4 is provided with a first contact surface 43 adapted to the first positioning portion 31, and a second contact surface 44 adapted to the second positioning portion 32. The first contact surface 43 is the left side of the mold 4, and the second contact surface 44 is the rear side of the mold 4. The mold 4 can be positioned by contacting the two positioning portions of the positioning block 3 with the two contact surfaces of the mold 4. The mold 4 is also provided with a blind hole 45. The blind hole 45 is located on the left side, rear side and bottom surface of the mold 4, and the blind holes 45 on the left side and rear side of the mold 4 correspond to the second countersunk holes 33 at the two positioning portions of the positioning block 3, and the blind holes 45 on the bottom surface of the mold 4 correspond to the first countersunk holes 11 on the bottom plate 1. A magnet is bonded in the blind hole 45 (similarly, the glue bonding the magnet to the magnet does not exceed the outer surface of the mold 4). The mold 4, the positioning block 3 and the bottom plate 1 are fixed by the magnetic attraction between the magnet in the countersunk hole and the magnet in the blind hole 45, so that the bottom surface of the mold 4 is tightly fitted with the bottom plate 1, thereby ensuring the positioning accuracy of the mold 4.

[0031] In this embodiment, when installing the mold 4 on the base plate 1, it is only necessary to place the mold 4 in the positioning block 3 and position it through the positioning portion. The magnets in the first countersunk hole 11 and the second countersunk hole 33 and the magnet in the blind hole 45 attract each other, and the mold 4 is fixed by magnetic attraction to complete the installation of the mold 4. The magnetic fixing method replaces the traditional bolt fixing method, making it easier to operate when replacing molds 4 of different specifications, faster, and more efficient.

[0032] When replacing the mold 4, the operator presses the bottom plate 1 with one hand and holds the handle installed on the threaded groove 46 in the original mold 4 with the other hand, and pulls the handle to one side to detach the original mold 4, and then holds the handle of the new mold 4 to make the two contact surfaces of the new mold 4 close to the two positioning parts of the positioning block 3. When the distance is less than 5 mm, under the action of magnetic attraction, the new mold 4 will automatically fit onto the positioning block 3 to form a stable fit. Since the cutting grooves 41 on molds 4 of different specifications are in the same position, and the positions of the positioning block 3, the bottom plate 1 and the blade 21 are relatively fixed, even if molds 4 of different specifications are replaced, the blade 21 on the cutting machine 2 can still accurately enter the cutting groove 41 of the mold 4 during operation to cut the thin-walled tube passing through the tube hole 42.

[0033] In addition, in the prior art, the mold 4 is fixed to the base plate 1 using bolts, and metal debris is easily brought out when the bolts are removed and installed, which can easily contaminate the operating table and the rubber gloves worn by the operator. The present application uses a magnetic installation method to prevent debris generated by replacing the mold 4.

[0034] Working principle: When replacing the mold 4, the operator presses the bottom plate 1 with one hand and holds the handle installed on the threaded groove 46 in the original mold 4 with the other hand, and pulls the handle to one side to detach the original mold 4. Then, the operator holds the handle of the new mold 4 to make the two contact surfaces of the new mold 4 close to the two positioning parts of the positioning block 3. The positioning is performed through the positioning parts. When the distance between them is less than 5 mm, the magnets in the first countersunk hole 11 and the second countersunk hole 33 and the magnets in the blind hole 45 attract each other, and the new mold 4 is fixed by magnetic attraction, and the replacement of the mold 4 is completed.

[0035] In summary, although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipe cutting tool, characterized in that: include: A bottom plate (1), the bottom plate (1) being provided with a first countersunk hole (11), and the bottom plate (1) being fixed with a positioning block (3) by means of bolts; The positioning block (3) is provided with a positioning portion, the positioning portion is provided with a second countersunk hole (33), and magnets are bonded inside the first countersunk hole (11) and the second countersunk hole (33); The positioning portion is in contact with a mold (4), the mold (4) is provided with a blind hole (45), and the magnet is bonded in the blind hole (45).

2. A pipe cutting tool according to claim 1, characterized in that: The bottom plate (1) is fixed with a cutter (2) by means of bolts, and the cutter (2) is provided with a blade (21).

3. A pipe cutting tool according to claim 1, characterized in that: The positioning portion comprises a first positioning portion (31) on a long side and a second positioning portion (32) on a short side.

4. A pipe cutting tool according to claim 3, characterized in that: The mold (4) is provided with a first contact surface (43) adapted to the first positioning portion (31), and a second contact surface (44) adapted to the second positioning portion (32).

5. A pipe cutting tool according to claim 4, characterized in that: The first contact surface (43) is the left side surface of the mold (4).

6. A pipe cutting tool according to claim 4, characterized in that: The second contact surface (44) is the rear side surface of the mold (4).

7. The pipe cutting tool according to claim 1, characterized in that: The positioning block (3) is L-shaped.

8. The pipe cutting tool according to claim 1, characterized in that: A cutting groove (41) is provided downwardly at the top of the mold (4).

9. The pipe cutting tool according to claim 1, characterized in that: A tube hole (42) is formed through one side of the mold (4).

10. The pipe cutting tool according to claim 1, characterized in that: The right side of the mold (4) is provided with a thread groove (46).

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