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CN-122008339-A - Cutting device for heat shrinkage protective tube

CN122008339ACN 122008339 ACN122008339 ACN 122008339ACN-122008339-A

Abstract

The invention discloses a cutting device for a heat shrinkage protective tube, which is characterized in that a mounting block with a shaft lever at the top is arranged below a connecting seat, the shaft lever is arranged in a containing groove and slides up and down along the vertical direction, an elastic piece is arranged between the top of the shaft lever and the top wall of the containing groove, an adjusting gap is arranged between the connecting seat and the mounting block, two bearings are arranged on the mounting block at intervals in a coaxial mode, a knife rest with an annular knife head is arranged on one side of the mounting block, a connecting rod is arranged on one side of the knife rest opposite to the mounting block, one end of the connecting rod, which is far away from the knife rest, penetrates through the two bearings and is matched with a fastener, a strip-shaped through hole is formed on the two side wall surfaces of the connecting seat and is communicated with the containing groove along the vertical direction, and the strip-shaped through hole is communicated with the containing groove through a strip-shaped through groove. The invention can prevent the annular tool bit from swinging on the basis of realizing the elastic contact between the annular tool bit and the workpiece, improves the position precision of the annular tool bit and improves the cutting effect.

Inventors

  • SHI XIAOQING
  • CHEN JUN
  • WANG WEI
  • BIAN YONGGANG

Assignees

  • 江苏科森医疗器械有限公司

Dates

Publication Date
20260512
Application Date
20241111

Claims (10)

  1. 1. The heat shrinkage protection tube cutting device comprises a supporting seat (3) and is characterized in that one side of the supporting seat (3) provided with a vertical driving mechanism (4) is provided with a top plate (2), the movable end of the vertical driving mechanism (4) is connected with the top plate (2), the lower surface of the top plate (2) is connected with at least two connecting seats (11), a containing groove (111) is vertically arranged in the connecting seat (11), the containing groove (111) is in through connection with the bottom end surface of the connecting seat (11), a mounting block (16) with a shaft lever (17) at the top is arranged below the connecting seat (11), the shaft lever (17) is positioned in the containing groove (111) and slides upwards and downwards along the vertical direction, an elastic piece (19) is arranged between the top of the shaft lever (17) and the top wall of the containing groove (111), and an adjusting gap is formed between the connecting seat (11) and the mounting block (16); Two bearings (14) are coaxially arranged on the mounting block (16) at intervals, a tool rest (1) with an annular tool bit (10) is arranged on one side of the mounting block (16), a connecting rod (12) is arranged on one side of the tool rest (1) opposite to the mounting block (16), and one end, far away from the tool rest (1), of the connecting rod (12) penetrates through the two bearings (14) and is matched with a fastening piece (13); Two lateral wall surfaces of connecting seat (11) and all offered a bar through-hole (21) along vertical direction, link up through a bar through-slot (22) between this bar through-hole (21) and holding groove (111), two about axostylus axostyle (17) symmetric distribution bar through-slot (22) all are on a parallel with the axis direction setting of annular tool bit (10), the inside of bar through-slot (22) is provided with dead lever (20) that one is connected with axostylus axostyle (17), works as dead lever (20) are located when the lower extreme of bar through-hole (21), elastic component (19) are in compression state.
  2. 2. The heat shrinkage protection pipe cutting device according to claim 1, wherein a first fixing seat (81) and a second fixing seat (82) are arranged on the lower surface of the top plate (2), a fixing sleeve (9) is arranged between the two first fixing seats (81) and the second fixing seat (82), and a plurality of connecting seats (1) are slidably arranged on the circumferential outer wall of the fixing sleeve (9) along the length direction.
  3. 3. The heat shrinkage protective pipe cutting device according to claim 2, wherein a second mounting hole (5) is formed in a direction perpendicular to the fixing sleeve (9) on one side surface of the connecting seat (11), and a stop screw (6) matched with the fixing sleeve (9) is arranged in the second mounting hole (5).
  4. 4. The thermal shrinkage protective pipe cutting device according to claim 2, wherein a rotating handle (7) with an adjusting screw (71) is arranged on the first fixing seat (81) and parallel to the fixing sleeve (9), and one end of the adjusting screw (71) far away from the rotating handle (7) can penetrate through the first fixing seat (81) and be connected with a connecting seat (11).
  5. 5. The heat shrink protective tube cutting device as set forth in claim 1, wherein a mounting hole (23) is formed between both side walls of the mounting block (16), and a stopper ring (25) is provided on an inner wall of the mounting hole (23), thereby dividing an inner space of the mounting hole (23) into a first mounting groove (241) and a second mounting groove (242), and the bearings (14) are mounted inside the first mounting groove (241) and the second mounting groove (242).
  6. 6. The heat shrink protective tube cutting device as claimed in claim 5, wherein the axis of the mounting hole (23) is arranged coaxially with the axis of the annular cutter head (10).
  7. 7. The heat shrinkage protection pipe cutting device according to claim 1, wherein a shaft sleeve (18) is provided between an inner wall of the accommodating groove (111) and a circumferential outer wall of the shaft lever (17), and the shaft lever (17) can slide up and down along the inner wall of the shaft sleeve (18).
  8. 8. The heat shrink protective tube cutting device as claimed in claim 1, wherein the length of the strip-shaped through hole (21) is longer than the adjustment gap length.
  9. 9. The heat shrink protective tube cutting device as set forth in claim 1, wherein the top of the shaft (17) is provided with a second guide rod (171), and the elastic member (19) is sleeved on the circumferential outer wall of the second guide rod (171).
  10. 10. The heat shrinkage protection pipe cutting device according to claim 1, wherein the diameter of the shaft (17) is 2 to 4 times the diameter of the second guide rod (171).

Description

Cutting device for heat shrinkage protective tube Technical Field The invention relates to a cutting device for a heat-shrinkable protective tube, and belongs to the technical field of heat-shrinkable sleeve cutting. Background The heat shrinkage protecting pipe, also called heat shrinkage sleeve, is one kind of special heat shrinkage sleeve of polyolefin material. The heat-shrinkable sleeve has the advantages of high-temperature shrinkage, softness, flame retardance, insulation corrosion resistance and the like, and is widely applied to the insulation protection of various wire harnesses, welding spots and inductors, the rust prevention and corrosion resistance of metal pipes and bars and the like. Common heat-shrinkable tubes are PVC heat-shrinkable tubes, PET heat-shrinkable tubes, glue-containing heat-shrinkable tubes and the like. And in order to protect the workpiece, a heat shrinkage tube is sleeved on the surface of a part of the workpiece, for example, a radio frequency ablation needle used in radio frequency treatment, the heat shrinkage tube is sleeved on the radio frequency ablation needle in advance, the length of a heat shrinkage sleeve of the part is generally larger than that of the ablation needle, and the redundant heat shrinkage sleeve on the workpiece is required to be cut off later. In the prior art, the annular cutter head on the cutting device is driven to rotate, then the heat-shrinkable sleeve on the surface of the needle body is cut off through the rotating annular cutter head, and the redundant heat-shrinkable sleeve is cut off, but the annular cutter head and a workpiece in the prior art are in hard contact, and the rotation center of the annular cutter head is difficult to ensure to be consistent with the center of the driving shaft in the installation process, so that the annular cutter head easily deflects in the rotation process, the cutting opening is offset or is too wide, and the cutting effect is poor. Disclosure of Invention The invention aims to provide a thermal contraction protective tube cutting device which can prevent the annular cutter head from swinging on the basis of realizing the elastic contact between the annular cutter head and a workpiece, and also improves the position precision of the annular cutter head and the cutting effect. The technical scheme adopted by the invention is that the thermal contraction protective tube cutting device comprises a supporting seat, a heat insulation layer and a heat insulation layer, wherein a top plate is arranged on one side of the supporting seat, provided with a vertical driving mechanism, and the movable end of the vertical driving mechanism is connected with the top plate; the lower surface of the top plate is connected with at least two connecting seats, an accommodating groove is formed in the connecting seats in a vertical mode, the accommodating groove is in through connection with the bottom end surface of the connecting seats, a mounting block with a shaft rod at the top is arranged below the connecting seats, the shaft rod is positioned in the accommodating groove and slides up and down along the vertical direction, an elastic piece is arranged between the top of the shaft rod and the top wall of the accommodating groove, and an adjusting gap is formed between the connecting seats and the mounting block; Two bearings are arranged on the mounting block at intervals in a coaxial mode, a tool rest with an annular tool bit is arranged on one side of the mounting block, a connecting rod is arranged on one side of the tool rest opposite to the mounting block, and one end of the connecting rod, far away from the tool rest, penetrates through the two bearings and is matched with a fastener; The two side wall surfaces of the connecting seat are provided with a strip-shaped through hole along the vertical direction, the strip-shaped through hole is in through connection with the accommodating groove through a strip-shaped through groove, the two strip-shaped through grooves which are symmetrically distributed about the shaft rod are all parallel to the axis direction of the annular tool bit, a fixing rod connected with the shaft rod is arranged in the strip-shaped through groove, and when the fixing rod is positioned at the lower end of the strip-shaped through hole, the elastic piece is in a compressed state. The further improved scheme in the technical scheme is as follows: 1. In the above scheme, be located the lower surface of roof is provided with a first fixing base, second fixing base, and is provided with a fixed sleeve between two first fixing bases, second fixing base, and on this fixed sleeve's the circumference outer wall and along length direction slidable mounting have a plurality of connecting seat. 2. In the above scheme, a second mounting hole is formed in a penetrating manner on one side surface of the connecting seat along a direction perpendicular to the fixing sleeve, and a stop screw matched with t