Punching device for plastic conduit cutter

Abstract

The invention discloses a cutter through hole device for a plastic conduit, which comprises a punching die and is characterized in that the punching die is provided with a cutter through hole in the vertical direction, a cutter which vertically ascends and descends is arranged in the cutter through hole, the punching die is provided with a pipe penetrating hole in the horizontal direction, and the pipe penetrating hole is communicated with the cutter through hole. The side wall of the pipe penetrating hole and the cutter through hole are perpendicularly crossed and transitionally tangent, and the pipe penetrating hole is a special-shaped hole. The guide pipe punching die has the beneficial effects that the special-shaped pipe penetrating holes are formed, so that the die can adapt to guide pipes with different pipe diameters when punching the guide pipes, the current situation that the die is frequently replaced in the punching process is reduced, and therefore the guide pipe punching die has better adaptability, multiple types of dies do not need to be prepared, the production cost of enterprises is reduced, and the production efficiency is improved. And the working efficiency is also improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a cutter hole-through device for plastic catheters. Background Art

[0002] Catheters are one of the common types of medical devices. They are made of medical plastics and are elastic and soft. When making infusion tubes or other medical devices, there is often an opening on the side wall of the catheter. The catheter is inserted into the human blood vessel so that the liquid medicine flows from the catheter to the opening and enters the blood vessel. Therefore, if an opening is required in the catheter, a mold is needed to punch the catheter.

[0003] In the punching die of the prior art, since the through hole for passing the catheter is circular, its inner diameter is fixed. If the catheter diameter error is greater than the die hole diameter, the catheter cannot be inserted. If the catheter diameter error is too much less than the die hole diameter, the catheter cannot be cut out, resulting in waste and the punching die needs to be replaced. Therefore, in the process of punching the catheter, multiple types of punching dies need to be prepared, which will make the efficiency of catheter opening low and increase the production cost of the enterprise. Summary of the invention

[0004] The object of the present invention is to provide a cutter hole-through device for plastic conduits to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cutter hole device for plastic conduits, comprising a punching die, characterized in that: the punching die is provided with a cutter hole in a vertical direction, a cutter that can move vertically up and down is provided in the cutter hole, the punching die is provided with a pipe penetration hole in a horizontal direction, the side wall of the pipe penetration hole is tangent to the vertical intersection of the cutter hole, and the pipe penetration hole is a special-shaped hole.

[0006] Preferably, the special-shaped hole comprises a straight side, a bottom side, a bevel side and a top side, and the special-shaped hole comprises the straight side, the bottom side, the bevel side and the top side to form a right-angled trapezoidal structure.

[0007] Preferably, a virtual circular conduit channel is formed between the straight edge, the bottom edge and the oblique edge, and the edges of the conduit channel are tangent to the straight edge, the bottom edge and the oblique edge respectively.

[0008] Preferably, the top edge, the straight edge and the bevel edge form an overflow channel.

[0009] Preferably, the cutter through hole comprises a guide hole and a cutter hole, and the cutter holes are arranged on both sides of the guide hole.

[0010] Preferably, the cutter comprises a handle and a blade, wherein the blades are arranged on both sides of the handle, the handle is movably arranged in a guide hole, and the blades are movably arranged in a knife hole.

[0011] Preferably, the number of the special-shaped holes is four sizes.

[0012] Preferably, the punching die comprises an upper die and a lower die, a vertical die is provided between the upper die and the lower die, a blanking opening is provided between the upper die and the lower die, and the middle section of the knife hole is connected to the blanking opening.

[0013] Compared with the prior art, the beneficial effect of the present invention is that the present invention sets special-shaped tube-piercing holes so that the mold can adapt to tubes of different diameters when punching the tubes, thereby reducing the current situation of frequent mold replacement during the punching process. Therefore, the present application has better adaptability and does not need to prepare multiple types of molds. This reduces the scrap rate while also reducing the company's production costs and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the punching die structure of the present invention;

[0016] Figure 3 This is a schematic diagram of the pipe-through hole structure of the present invention;

[0017] Figure 4 It is a cross-sectional view of the pipe hole of the present invention.

[0018] In the figure: 1. punching die; 11. upper die; 12. lower die; 13. vertical die; 14. blanking port; 2. cutter through hole; 21. guide hole; 22. knife hole; 3. cutter; 31. knife handle; 32. knife blade; 4. pipe hole; 41. straight edge; 42. bottom edge; 43. bevel edge; 44. top edge; 5. conduit channel; 6. overflow channel. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figures 1 to 3The present invention provides a technical solution: a device for cutting and punching holes of plastic conduits, comprising a punching die 1, wherein the punching die 1 is provided with a cutter hole 2 in a vertical direction, wherein a cutter 3 which can move vertically up and down is provided in the cutter hole 2, and wherein the punching die 1 is provided with a pipe penetration hole 4 in a horizontal direction, wherein the side wall of the pipe penetration hole 4 is tangent to the vertical intersection of the cutter hole 2, and one end of the plastic conduit is penetrated through the pipe penetration hole 4, and a part of the tube body of the plastic conduit passes through the cutter hole 2, and the cutter 3 falls downward to cut a small hole in the tube wall of the plastic conduit, thereby completing the work of cutting and punching holes of the plastic conduit.

[0021] In a specific embodiment of the present invention, in order to make the present application applicable to plastic conduits of different diameters, the pipe-penetrating hole 4 is a special-shaped hole, which includes a straight edge 41, a bottom edge 42, a bevel edge 43 and a top edge 44, and the straight edge 41, the bottom edge 42, the bevel edge 43 and the top edge 44 form a right-angled trapezoidal structure. There are four pipe-penetrating holes 4, and the sizes of the four special-shaped holes 4 are different, that is, the perimeter of each special-shaped hole 4 is set from small to large, so that the pipe-penetrating holes 4 can adapt to the cutting work of plastic conduits of different diameters.

[0022] Furthermore, a virtual circular conduit channel 5 is formed between the straight edge 41 , the bottom edge 42 and the oblique edge 43 , and the sides of the conduit channel 5 are tangent to the straight edge 41 , the bottom edge 42 and the oblique edge 43 , respectively.

[0023] Furthermore, the top edge 44, the straight edge 41 and the oblique edge 43 form an overflow channel 6. When the diameter of the plastic conduit is larger than the diameter of the conduit channel 5, the plastic conduit will be squeezed and deformed and overflow upward into the overflow channel 6. Therefore, the setting of the special-shaped hole can punch and cut plastic conduits with larger diameters.

[0024] In a specific embodiment of the present invention, the cutter through hole 2 includes a guide hole 21 and a cutter hole 22 , and the cutter hole 22 is arranged on both sides of the guide hole 21 .

[0025] In a specific embodiment of the present invention, the cutter 3 includes a handle 31 and a blade 32, the blade 32 is arranged on both sides of the handle 31, the handle 31 is movably arranged in the guide hole 21, the guide hole 21 is a square long hole, and the handle 31 is set as a square long handle, so that the handle 31 will not rotate when moving up and down in the guide hole 21, so that the punching is more accurate. The blade 32 is movably arranged in the knife hole 22, and the blade 32 gradually becomes thinner from the side close to the handle 31 to the side away from the handle 31, so that the blade 32 is sharper.

[0026] In a specific embodiment of the present invention, there are four tube-piercing holes 4, which are respectively arranged at four positions on the punching die 1. The four tube-piercing holes 4 are arranged in four sizes, and can cut plastic tubes of different diameters. The four tube-piercing holes 4 are arranged at the upper and lower sides of the knife hole 22, and are respectively connected to the knife hole 22. The cutter 3 can punch four plastic tubes each time.

[0027] In a specific embodiment of the present invention, the punching die 1 includes an upper die 11 and a lower die 12, a vertical die 13 is provided between the upper die 11 and the lower die 12, a blanking opening 14 is provided between the upper die 11 and the lower die 12, and the middle section of the knife hole 22 is connected to the blanking opening 14. The lower scrap 300 after punching by the upper die 11 falls from the blanking opening 14 without affecting the punching of the lower die.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for cutting holes in plastic conduits, comprising a punching die, characterized in that: The punching die is provided with a vertical cutter hole, in which a cutter that can move vertically up and down is provided. The punching die is provided with a horizontal pipe hole, and the side wall of the pipe hole is tangent to the vertical intersection of the cutter hole. The pipe hole is an irregular hole.

2. A plastic conduit cutting and hole-piercing device according to claim 1, characterized in that: The special-shaped hole includes a straight side, a bottom side, a bevel side and a top side, and the special-shaped hole includes the straight side, the bottom side, the bevel side and the top side to form a right-angled trapezoidal structure.

3. A plastic conduit cutting and hole-piercing device according to claim 2, characterized in that: A virtual circular conduit channel is formed between the straight edge, the bottom edge and the oblique edge, and the sides of the conduit channel are tangent to the straight edge, the bottom edge and the oblique edge respectively.

4. A plastic conduit cutting and hole-piercing device according to claim 3, characterized in that: The top edge, the straight edge and the bevel edge form an overflow channel.

5. A plastic conduit cutting and hole-piercing device according to claim 4, characterized in that: The cutter through hole comprises a guide hole and a cutter hole, and the cutter holes are arranged on both sides of the guide hole.

6. A plastic conduit cutting and hole-piercing device according to claim 5, characterized in that: The cutter handle and the blade are arranged on both sides of the handle, the handle is movably arranged in the guide hole, and the blade is movably arranged in the knife hole.

7. A plastic conduit cutting and hole-piercing device according to claim 6, characterized in that: The number of the special-shaped holes is four sizes.

8. The device for cutting and punching holes in plastic conduits according to claim 7, characterized in that: The punching die comprises an upper die and a lower die, a vertical die is provided between the upper die and the lower die, a blanking opening is provided between the upper die and the lower die, and the middle section of the knife hole is connected to the blanking opening.

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