Tube drawing machine for manufacturing vascular intervention catheter

Abstract

The utility model discloses a tube drawing machine for manufacturing a vascular intervention catheter, which belongs to the technical field of manufacturing equipment of vascular intervention catheters and comprises a base, a cooling water tank, a winding device, a threaded rod and threaded sleeve assembly, a mounting box, a half-groove block, an electric heating plate, a spraying tube, a cooling water tank, a high-speed motor and a volute impeller assembly. The electric heating plates which are arranged up and down are used for heating the half-groove body blocks so that the plastic guide pipe clamped between the half-groove body blocks can be heated, one end of the plastic guide pipe is fixed to the winding device, and then the winding device rotates at a low speed to slowly pull out the guide pipe which is subjected to diameter changing through a cavity between the heated half-groove body blocks. The cooling water tank is matched with the high-speed motor, the volute impeller assembly and the spraying pipe to cool and shape the pulled-out guide pipe, the semi-groove blocks fixedly attached to each other are different in radius, the guide pipes of multiple sizes can be manufactured through heating and stretching at the same time, operation is easy, and practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of manufacturing equipment for vascular intervention catheters, in particular to a tube drawing machine for manufacturing vascular intervention catheters. Background Art

[0002] Cardiovascular interventional therapy is a new technology for diagnosing and treating cardiovascular diseases. It does not require thoracotomy. Under the guidance of imaging methods, the catheter is sent to the lesion site by puncturing the surface blood vessels with the help of certain instruments. It is a diagnostic and treatment method for diagnosing and treating cardiovascular diseases through specific catheter operation techniques. It is currently a more advanced method for diagnosing and treating cardiovascular diseases. Among them, vascular interventional catheters are necessary instruments for vascular interventional diagnosis and treatment. It can be seen from the article "Illustrated Processing Technology of Polymer Interventional Catheters" that they are stretched and heated to change diameter during the production process. Specifically, the molding mold is heated and a thrust is applied to the tube body with the assistance of a workbench and a clamp, and the inner diameter of the tip is guaranteed by a core shaft, so that the front end of the catheter is softened in the inner cavity of the mold and completely enters the inner cavity of the mold, and then the mold and the tip are cooled. The above process is usually performed on a single vascular interventional catheter, and when processing vascular interventional catheters of different diameters, the mold needs to be replaced, resulting in low production efficiency of vascular interventional catheters. Based on this, the utility model designs a vascular interventional catheter manufacturing tube drawing machine to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide a tube drawing machine for manufacturing vascular intervention catheters to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vascular intervention catheter manufacturing tube drawing machine, comprising a base, a cooling water tank and a winding device, an inverted L-shaped plate is vertically fixed to the rear of one side of the top of the base, both sides of the top of the inner wall of the inverted L-shaped plate are vertically rotated and penetrated to install threaded rod threaded sleeve assemblies, support columns are vertically fixed to the left and right sides of the top front of the base, and mounting boxes with ports opposite to each other are respectively fixed between the tops of the two support columns and between the bottom ends of the two threaded rod threaded sleeve assemblies, a plurality of half-trough blocks with different radii and fixedly fitted to each other are installed in the ports of the mounting box, an electric heating plate is installed in the cavity between the mounting box and the half-trough block, a first rotating shaft is vertically rotated to install the inner wall of the inverted L-shaped plate, and the two threaded rod threaded sleeve assemblies are vertically rotated to install the first rotating shaft. A worm gear assembly is horizontally installed between the outer wall of the threaded rod of the threaded rod threaded sleeve assembly and the top of the inner wall of the inverted L-shaped plate. The top of the first rotating shaft is connected to the worm end of the worm gear assembly through a bevel gear pair. The cooling water tank is fixed to the top of the base and is arranged colinearly with the two half-tank blocks. A spray pipe is installed directly above the cooling water tank through a bracket. The winding device is fixed to the top of the base and is located on the outside of the cooling water tank. A forward and reverse low-speed motor is installed between the bottom of the first rotating shaft and the top of the base through a spur gear set. A high-speed motor and a volute impeller assembly connected to each other are installed on the top of the base and on the rear side of the cooling water tank. The inlet and outlet liquid ports of the volute impeller assembly are respectively connected to the bottom of the outer wall of the cooling water tank and the liquid inlet end of the spray pipe through pipes.

[0005] Preferably, a liquid level alarm is installed below the outer wall of the cooling water tank.

[0006] Preferably, the cooling water tank comprises a rectangular outer shell with concave sides and an open top, a rectangular inner shell is fixed to the inner walls on both sides and the front inner wall in the front of the inner cavity of the rectangular outer shell, semiconductor refrigeration plates are embedded in both sides of the rectangular outer shell and the rectangular inner shell, air outlet holes are arranged at the rear of the concave sides of the rectangular outer shell and are inclined toward the surface of the semiconductor refrigeration plates, a second rotating shaft is rotatably installed through a mesh plate and a bearing in the center of the rear side of the rectangular outer shell, a suction fan blade is fixedly sleeved on the inner end of the second rotating shaft, a third rotating shaft parallel to the top of the base is installed on the outer end of the second rotating shaft through a bearing seat and a bevel gear pair, and the outer end of the third rotating shaft is connected to the outer wall of the motor shaft of the high-speed motor through a sprocket chain assembly.

[0007] Preferably, a tensioner cooperating with the sprocket chain assembly is also installed on the top of the base.

[0008] Preferably, the winding device includes a pair of fourth rotating shafts that are relatively spaced and connected to the top of the base through a bearing seat, wherein an ordinary low-speed motor is installed between the outer end of one of the fourth rotating shafts and the top of the base through a bevel gear pair, and circular plates are coaxially fixed to the inner ends of the two fourth rotating shafts, an arc-shaped support plate is fixed to the middle part of the inner side of the circular plate, and a winding roller is placed between the arc-shaped support plates on both sides, and the roller shafts at both ends of the winding roller are fixed by butterfly bolts using arc-shaped clamping blocks, and a plurality of circular partitions are evenly fixed on the outer wall of the winding roller, and an arc-shaped shear cut is evenly spaced and arranged on the inner side of the circular partition, and a T-shaped pressure block is embedded and fixed to the inner end of the arc-shaped shear cut by screws.

[0009] Preferably, the outer side of the circular partition and the outer side of the side plate on one side of the roller are both provided with snap-fits.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the utility model utilizes upper and lower electric heating plates to heat the half-tank blocks, so that the half-tank blocks heat the plastic conduit clamped therebetween, and one end of the plastic conduit is fixed on a winding device, and the winding device is then rotated at a low speed to slowly pull out the conduit that has been heated and reduced in diameter through the cavity between the half-tank blocks, and the cooling water tank cooperates with the high-speed motor, the volute impeller assembly and the spray pipe to cool and shape the pulled conduit, and the radii on the half-tank blocks that are fixed and fitted to each other are different, so that conduits of multiple sizes can be manufactured by heating and stretching at the same time, which is simple to operate and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 for Figure 1 Partial right view of the middle cooling water tank;

[0014] Figure 3 for Figure 1 Schematic diagram of the structure of the intermediate cooling water tank;

[0015] Figure 4 for Figure 1 Schematic diagram of the winding device structure.

[0016] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0017] 1-base, 2-inverted L-shaped plate, 3-threaded rod threaded sleeve assembly, 4-support column, 5-installation box, 6-half-trough block, 7-electric heating plate, 8-first rotating shaft, 9-spray pipe, 10-cooling water tank, 11-winding device, 12-worm gear assembly, 13-high-speed motor, 14-volute impeller assembly, 80-positive and negative low-speed motor, 100-rectangular outer shell, 101-rectangular liner, 102-semiconductor refrigeration plate, 103-air outlet, 104-second rotating shaft, 105-suction fan blade, 106-third rotating shaft, 110-fourth rotating shaft, 111-ordinary low-speed motor, 112-circular plate, 113-arc support plate, 114-roller, 115-arc block, 116-circular partition, 117-bayonet, 118-arc shear cut, 119-T-type pressing block. DETAILED DESCRIPTION

[0018] 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 of 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.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0020] See also Figure 1-2The utility model provides a technical solution: a vascular intervention catheter manufacturing tube drawing machine, including a base 1, a cooling water tank 10 and a winding device 11, an inverted L-shaped plate 2 is vertically fixed to the rear of one side of the top of the base 1, and threaded rod threaded sleeve assemblies 3 are installed on both sides of the top of the inner wall of the inverted L-shaped plate 2 through vertical rotation through bearings, and support columns 4 are vertically fixed to the left and right sides of the top front of the base 1, and the tops of the two support columns 4 and the bottoms of the two threaded rod threaded sleeve assemblies 3 are fixed with insulation ceramic blocks fixed by screws, and the installation boxes 5 with opposite ports are fixed respectively. A plurality of half-trough blocks 6 with different radii and fixedly fitted to each other are installed in the port of the mounting box 5. The radius sizes of the upper and lower corresponding half-trough blocks 6 are consistent, so that when they fit together, they can be extruded to form a cylindrical shape, and an electric heating plate 7 is installed in the cavity between the mounting box 5 and the half-trough block 6. Its connecting wire passes through the insulating porcelain tube to the outside of the mounting box 5 for electrical temperature control, which belongs to the prior art. At the same time, the inner side wall of the inverted L-shaped plate 2 is vertically rotatably installed with a first rotating shaft 8 through a bearing seat, and the upper part of the outer wall of the threaded rod of the two threaded rod threaded sleeve assemblies 3 is connected to the inverted L-shaped A worm gear assembly 12 is horizontally installed between the top of the inner wall of the plate 2 through a bearing seat, wherein the worm wheel is fixedly sleeved on the threaded rod, and the top of the first rotating shaft 8 is connected to the worm end of the worm gear assembly 12 through a bevel gear pair. The cooling water tank 10 is fixed on the top of the base 1 and is arranged in line with the two half-tank blocks 6. A liquid level alarm is installed under the outer wall of the cooling water tank 10, and cooling water can be added in time, which belongs to the existing monitoring technology. A spray pipe 9 is installed directly above the cooling water tank 10 through a bracket fixed to the inner wall of the inverted L-shaped plate 2, and the winding device 11 is fixed on the top of the base 1 and is located on the outside of the cooling water tank 10. A forward and reverse low-speed motor 80 is installed between the bottom of the first rotating shaft 8 and the top of the base 1 through a spur gear set. It can make the threaded rod threaded sleeve assembly 3 rise and fall a certain distance by serially connecting a timer and a forward and reverse switch, which is convenient for manual operation. A high-speed motor 13 and a volute impeller assembly 14 connected to each other are installed on the top of the base 1 and on the rear side of the cooling water tank 10. The inlet and outlet liquid ports of the volute impeller assembly 14 are respectively connected to the bottom of the outer wall of the cooling water tank 10 and the liquid inlet end of the spray pipe 9 through pipelines.

[0021] See also Figure 3The cooling water tank 10 comprises a rectangular outer shell 100 with concave sides and an open top. A rectangular inner liner 101 is fixed to the inner walls on both sides and the inner wall on the front of the inner cavity of the rectangular outer shell 100. Semiconductor cooling sheets 102 are embedded on both sides of the rectangular outer shell 100 and the rectangular inner liner 101. The semiconductor cooling sheets 102 are connected to a DC power supply through a wire to work. The concave sides of the rectangular outer shell 100 are inclined to the semiconductor cooling sheets 102. The surface of the rear side is provided with air outlet holes 103. A second rotating shaft 104 is rotatably installed through the mesh plate and the bearing in the center of the rear side of 00, and a suction fan blade 105 is fixedly sleeved on the inner end of the second rotating shaft 104. A third rotating shaft 106 parallel to the top of the base 1 is installed on the outer end of the second rotating shaft 104 through a bearing seat and a bevel gear pair. The outer end of the third rotating shaft 106 is connected to the outer wall of the motor shaft of the high-speed motor 13 through a sprocket chain assembly, and a tensioner matched with the sprocket chain assembly is also installed on the top of the base 1 to tighten the chain and improve the transmission efficiency.

[0022] See also Figure 4 The winding device 11 includes a pair of fourth rotating shafts 110 connected to the top of the base 1 through a bearing seat at a relative interval, wherein an ordinary low-speed motor 111 is installed between the outer end of one of the fourth rotating shafts 110 and the top of the base 1 through a bevel gear pair, and a circular plate 112 is coaxially fixed to the inner ends of the two fourth rotating shafts 110, and an arc-shaped support plate 113 is fixed to the middle part of the inner side of the circular plate 112, and a winding roller 114 is placed between the arc-shaped support plates 113 on both sides, and the roller shafts at both ends of the winding roller 114 are fixed by butterfly bolts using arc-shaped clamping blocks 115 for easy disassembly, and a plurality of circular partitions 116 are evenly fixed on the outer wall of the winding roller 114, and the outer wall of the winding roller 114 is evenly spaced and is provided with an arc-shaped shear cut 118 on the inner side of the circular partition 116, and the inner end of the arc-shaped shear cut 118 is fixed with a T-shaped pressing block 119 embedded by a screw, and by disassembling and fixing the T-shaped pressing block 119, one end of the catheter can be fixed to the outer wall of the winding roller 114, which is convenient for winding and stability.

[0023] Furthermore, the outer side of the circular partition 116 and the outer side of the side plate of the roller 114 are both provided with a snap-in 117, which is set to be relatively small in size, so that catheters of various sizes can be pressed into the inner cavity for fixation to prevent them from being scattered.

[0024] When using the present invention, a tube drawing machine for manufacturing vascular intervention catheters: first, the power supply of the upper and lower electric heating plates 7 is turned on to preheat them, and then one end of the catheter that needs to be reduced in diameter is fixed in the inner cavity of the arc-shaped shearing opening 118 and is squeezed and fixed by a T-shaped pressing block 119, wherein the grooves of different radii on the half-slot body block 6 correspond to the arc-shaped shearing opening 118 that is colinear with it, and the first rotating shaft 8 is driven to rotate forward and reversely by a forward and reverse low-speed motor 80, and the two threaded rod threaded sleeve assemblies 3 are extended and retracted by a bevel gear pair and a worm gear assembly 12, and the upper and lower half-slot body blocks 6 clamp the catheter, and then the catheter is slowly pulled by the winding device 11, and the catheter is made to enter the half-slot body block by heating and squeezing. The radius of the conduit in the trough block 6 changes, and the cooling water tank 10 cooperates with the high-speed motor 13, the volute impeller assembly 14 and the spray pipe 9 to cool and shape the pulled-out conduit. When the high-speed motor 13 is cooling and shaping, the third rotating shaft 106 can be rotated through the sprocket chain assembly, and then the second rotating shaft 104 drives the suction fan blades 105 to suck air into the cavity formed by the rectangular outer shell 100 and the rear side of the rectangular inner liner 101 through the bevel gear pair. The air is blown to the hot end of the semiconductor refrigeration plate 102 through the air outlet 103 to accelerate the heat dissipation, and the semiconductor refrigeration plate 102 conducts the heat of the water in the inner cavity of the rectangular inner liner 101 to the outside, thereby accelerating the cooling rate.

[0025] It is worth noting that the electric heating plate, high-speed motor, forward and reverse low-speed motor, semiconductor cooling plate and ordinary low-speed motor used in this solution are all commercially available products and belong to existing mature technologies. Their electrical connection relationships, specific control circuit structures, working principles and product models will not be elaborated here.

[0026] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0027] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A tube drawing machine for manufacturing vascular interventional catheters, comprising a base (1), a cooling water tank (10) and a winding device (11), characterized in that: An inverted L-shaped plate (2) is vertically fixed to the rear of one side of the top of the base (1); a threaded rod threaded sleeve assembly (3) is vertically rotatably installed on both sides of the top of the inner wall of the inverted L-shaped plate (2); support columns (4) are vertically fixed to the left and right sides of the top front of the base (1); a mounting box (5) with ports facing each other is respectively fixed between the tops of the two support columns (4) and between the bottoms of the two threaded rod threaded sleeve assemblies (3); a plurality of half-trough blocks (6) with different radii and fixedly fitted to each other are installed in the ports of the mounting box (5); an electric heating plate (7) is installed in the cavity between the mounting box (5) and the half-trough block (6); a first rotating shaft (8) is vertically rotatably installed on the inner side wall of the inverted L-shaped plate (2); a worm gear is horizontally installed between the upper side of the outer wall of the threaded rod of the two threaded rod threaded sleeve assemblies (3) and the top of the inner wall of the inverted L-shaped plate (2). The cooling water tank (10) is fixed on the top of the base (1) and is arranged in line with the two half-tank blocks (6). A spray pipe (9) is installed directly above the cooling water tank (10) through a bracket. The winding device (11) is fixed on the top of the base (1) and is located outside the cooling water tank (10). A forward and reverse low-speed motor (80) is installed between the bottom of the first rotating shaft (8) and the top of the base (1) through a spur gear set. A high-speed motor (13) and a volute impeller assembly (14) connected to each other are installed on the top of the base (1) and located on the rear side of the cooling water tank (10). The inlet and outlet liquid ports of the volute impeller assembly (14) are respectively connected to the bottom of the outer wall of the cooling water tank (10) and the liquid inlet end of the spray pipe (9) through pipelines.

2. A vascular intervention catheter manufacturing tube drawing machine according to claim 1, characterized in that: A liquid level alarm is installed below the outer wall of the cooling water tank (10).

3. The vascular intervention catheter manufacturing tube drawing machine according to claim 1, characterized in that: The cooling water tank (10) comprises a rectangular outer shell (100) with concave sides and an open top, a rectangular inner shell (101) is fixed to the inner walls on both sides and the inner wall on the front of the inner cavity of the rectangular outer shell (100), semiconductor cooling sheets (102) are embedded on both sides of the rectangular outer shell (100) and the rectangular inner shell (101), and air outlet holes (102) are arranged on the rear sides of the concave sides of the rectangular outer shell (100) and are inclined toward the surface of the semiconductor cooling sheets (102). 03), a second rotating shaft (104) is rotatably installed in the center of the rear side of the rectangular outer shell (100) through a mesh plate and a bearing, the inner end of the second rotating shaft (104) is fixedly sleeved with a suction fan blade (105), and the outer end of the second rotating shaft (104) is installed with a third rotating shaft (106) parallel to the top of the base (1) through a bearing seat and a bevel gear pair, and the outer end of the third rotating shaft (106) is connected to the outer wall of the motor shaft of the high-speed motor (13) through a sprocket chain assembly.

4. The tube drawing machine for manufacturing vascular intervention catheter according to claim 3, characterized in that: A tensioner cooperating with the sprocket chain assembly is also installed on the top of the base (1).

5. The tube drawing machine for manufacturing vascular intervention catheter according to claim 1, characterized in that: The winding device (11) comprises a pair of fourth rotating shafts (110) connected to the top of the base (1) via a bearing seat at a relative interval, wherein a common low-speed motor (111) is installed between the outer end of one of the fourth rotating shafts (110) and the top of the base (1) via a bevel gear pair, and a circular plate (112) is coaxially fixed to the inner ends of the two fourth rotating shafts (110), and an arc-shaped support plate (113) is fixed to the inner middle part of the circular plate (112), and the arc-shaped support plates (113) on both sides are fixed to the inner middle part of the circular plate (112). 113), a roller (114) is placed between the rollers (114), the roller shafts at both ends of the roller (114) are fixed by means of arc-shaped clamping blocks (115) through butterfly bolts, a plurality of circular partitions (116) are evenly fixed on the outer wall of the roller (114), the outer wall of the roller (114) is evenly spaced and is provided with arc-shaped shear cuts (118) located inside the circular partitions (116), and a T-shaped pressing block (119) is embedded and fixed at the inner end of the arc-shaped shear cut (118) by means of screws.

6. The tube drawing machine for manufacturing vascular intervention catheter according to claim 5, characterized in that: The outer side of the circular partition (116) and the outer side of a side plate of the roller (114) are both provided with a snap-on opening (117).

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