CN2217501Y

CN2217501Y - Tracting and cutting machine for plastic tube of desposable infusion device

Info

Publication number: CN2217501Y
Application number: CN94212204U
Authority: CN
Inventors: 杨梅芳
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-05-13
Filing date: 1994-05-13
Publication date: 1996-01-17
Anticipated expiration: 2004-05-13

Abstract

The utility model relates to a drawing and cutting machine for the plastic tube of the disposable infusion device, which utilizes a step-less speed-regulating motor as motive power, and the drawing and cutting machine for the plastic tube of the disposable infusion device is a plastic machine which is used for drawing and cutting in the process of drawing the plastic tube. The drawing and cutting machine for the plastic tube of the disposable infusion device is composed of a drawing feeding portion and a cutting portion which are organically connected, and the cutting has two modes: vertical cutting and rotary cutting. The diameter size and the wall thickness of the plastic tube are controlled by the step-less speed-regulating motor and a drawing wheel; the length of the required plastic tube is determined by the circumference of the drawing wheel and the rotary angle of the drawing wheel through the action that a transmission device drives a cutter to conduct the cutting, for example one cutting action can be conducted after the drawing wheel rotates 360 DEG, so the required length of the plastic tube is equal to the circumference of the drawing wheel.

Description

Disposable transfusion device plastic tube traction cutting machine

The utility model relates to a kind of plastics machinery that the disposable transfusion device plastic tube is used that draws, and it not only is used for traction in pulling process, can also cut automatically simultaneously.

At present the whole nation more than 200 production disposable transfusion device producers after the plastic tube of used all lengths specification draws out, all use artificial hand shears, and are both time-consuming, take material, do not guarantee length standard again.

The purpose of this utility model provides a kind of disposable transfusion device plastic tube traction cutting machine, and it not only plays draw in plastic tube draws, and can also cut automatically by Len req, removes loaded down with trivial details hand labour, and economical with materials guarantees full-length.

The utility model is achieved in that the hauling machine that is driven axis of traction, traction wheel rotation by stepless speed-regulating motor through reductor by chain, sprocket wheel, below traction wheel, set up a pinch roller tangent with it, respectively there is a groove to coincide into an ellipse garden shape eyelet mutually in the middle of the garden cylinder of traction wheel, pinch roller, sets up transmission device that drives by axis of traction and the cutting mechanism of forming by the cutting knife and the otch of transmission device drive cutting again.Traction is performed such with feeding, plastic tube encircles the traction wheel groove from top to bottom around half-turn, deliver to outside the otch from ellipse garden shape eyelet along continuous straight runs, establish several truckles between otch and the ellipse garden shape eyelet, in order to reduce friction, as draw cutting " disposable transfusion device flexible pipe ", the plastics pipe range that is cut, traction wheel is big, the distance that is transported to otch is longer, then should in outlet, set up again two tangent, reeded, with the trundle of spring friction plate driven rotary, help continuously plastic tube to be sent outside the otch.Because the used plastic tube of transfusion device has two kinds of different length specifications of " flexible pipe " and " dropper ", " flexible pipe " is long, " dropper " is short, the mode of then implementing cutting has two kinds: the one, and the perpendicular cuts mode that is used for cutting " flexible pipe ", the transmission levers that cutter sweep is driven by axis of traction, vertical cutting knife, the perpendicular cuts mechanism that otch is formed by the transmission levers drive.The every rotation of traction wheel is done a cutting action for 360 °, and it is long that the traction wheel girth should equal " flexible pipe ".Another kind is the rotation cutting mode that is used for cutting " dropper ", the travelling gear that cutter sweep is driven by axis of traction, the rotary cutter by the travelling gear drive, the rotary cutting body that otch is formed.The every rotation of traction wheel is done a cutting action for 360 °, and it is long that the traction wheel girth equals " dropper ".

Owing to adopt such scheme, the traction cutting machine not only can play draw, and can finish automatic cutting task simultaneously, saved artificial, stifled having cut off by different in size and waste that cause, this machine is simple in structure, also can be used for the traction and the cutting of other similar plastic tubes.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the schematic diagram of structural principle of the present utility model and first embodiment.

Fig. 2 is the cutting transmission device schematic diagram of second embodiment of the utility model.

Fig. 3 is the rotary cutter schematic diagram.

Fig. 4 is that the groove kiss platform of traction wheel among Fig. 1, pinch roller becomes ellipse garden shape eyelet schematic diagram.

Fig. 5 is the vertical cutting knife schematic diagram among Fig. 1.

Among the figure 1, traction wheel 2, axis of traction 3, sprocket wheel and chain 4, pinch roller 5, stepless speed-regulating motor 6, reductor 7, truckle 8, trundle 9, otch 10, vertical cutting knife 11, plastic tube 12, transmission levers 13, lever fulcrum 14, rotary arm 15, travelling gear 16, cutter shaft 17, rotary cutter 18, groove 19, ellipse garden shape eyelet 20, spring

In Fig. 1 and Fig. 4, traction wheel (1) pinch roller (4) trundle (8) is all made with nontoxic, pollution-free, resilient slightly material, as nylon, rubber, plastics etc., the girth of traction wheel (1) equals the length (can not get negative error) of the plastic tube that will cut into, the speed ratio that trundle (8) girth multiply by trundle (8) and traction wheel (1) should be slightly larger than the girth of traction wheel (1), the rotation of trundle (8) should be driven by the spring friction plate, can not be fixed on the axle, so that regulate the feeding error, trundle (8) has and the same groove of traction wheel (1).Ellipse garden shape eyelet (19) minor axis is slightly less than the diameter of plastic tube (11), and major axis is slightly larger than the diameter of plastic tube (11), and girth is slightly larger than the girth of plastic tube (11).The purpose that designs so ellipse garden shape eyelet (19) is in pulling process, particularly begins, and when size variation appears in plastic tube, also can successfully draw and feeding.Traction and feeding work are performed such: by stepless speed-regulating motor (5) rotation, slow down through reductor (6), drive axis of traction (2) and traction wheel (1) rotation with chain and sprocket wheel (3).Plastic tube (11) in traction wheel groove (18) from top to bottom around half-turn, send from the traction wheel (1) and the ellipse garden shape eyelet (19) of pinch roller (4) anastomosis, sent truckle (7), again by two tangent, each is reeded, help continuously plastic tube (11) to be sent outside the otch (9) with the trundle (8) of spring friction plate driven rotary, has then finished traction and feeding work.

In Fig. 1 and first embodiment shown in Figure 5, because the rotation of axis of traction (2), be fixed on rotary arm (14) on the axis of traction (2) also along with transmission levers (12) is stirred in rotation, driving the vertical cutting knife (10) that spring (20) is housed by transmission levers (12) cuts from top to bottom, the plastic tube (11) that will stretch out otch (9) cuts off, the every rotation of axis of traction is just done cutting action one time for 360 °, the plastic tube length under cutting equal traction wheel (1) girth.The contact-making surface of vertical cutting knife (10) and otch (9) outer wall requires smooth and is close to, and the edge of a knife of vertical cutting knife (10) will have certain gradient.The weighing arm of transmission levers (12) is greater than the arm of force more than three times, to guarantee certain cutting speed.

In Fig. 2 and another embodiment shown in Figure 3, because the rotation of axis of traction (2), by travelling gear (15), make cutter shaft (16) rotation perpendicular with axis of traction (2), the rotary cutter (17) that is installed in cutter shaft (16) top is also along with rotation, and the blade of rotary cutter (17) skims over otch (9) outer wall, the plastic tube of otch (9) is stretched out in cut-out, 360 ° of the every rotations of axis of traction (2), rotary cutter (17) is done cutting action one time, and the plastic tube of cutting-out just equals traction wheel (1) girth.For reaching certain cutting speed, the radius of gyration of rotary cutter (17) must not be less than 15cm, and the edge of a knife should have certain gradient.The driving wheel of travelling gear (15) and follower can be changed speed ratio and change the plastic tube Cutting Length, as reaching former plastic tube length

, promptly traction wheel is constant, changes the driving wheel of travelling gear (15) and the speed ratio of follower into 1: 2,360 ° of axis of traction (2) rotations, and rotary cutter (17) does the cutting twice action, and the plastic tube length of being downcut equals former plastic tube length

Claims

1, a kind of disposable transfusion device plastic tube traction cutting machine, comprise machine rack, stepless speed-regulating motor, reductor, chain and sprocket wheel, axis of traction and traction wheel, it is characterized in that: below traction wheel, set up a pinch roller tangent with traction wheel, each is fluted in the middle of the garden cylinder of traction wheel and pinch roller, coincide into an ellipse garden shape eyelet mutually, set up again by the transmission device of axis of traction drive, cutting knife, the cutting mechanism that otch is formed by the transmission device drive.

2, disposable transfusion device plastic tube traction cutting machine according to claim 1, it is characterized in that: the ellipse garden shape eyelet that traction wheel and pinch roller coincide, its minor axis is slightly less than the plastic tube diameter that will draw, major axis is slightly larger than the plastic tube diameter that will draw, and girth is slightly larger than the plastic tube girth that will draw.

3, disposable transfusion device plastic tube traction cutting machine according to claim 1 is characterized in that: the transmission levers that cutter sweep is driven by axis of traction, the vertical cutting knife by the transmission levers drive, the perpendicular cuts mechanism that otch is formed.

4, disposable transfusion device plastic tube traction cutting machine according to claim 1 is characterized in that: the travelling gear that cutter sweep is driven by axis of traction, the rotary cutter by the travelling gear drive, the rotary cutting body that otch is formed.

5, according to claim 1 and 4 described disposable transfusion device plastic tube traction cutting machines, it is characterized in that: the driving wheel of travelling gear and follower can be changed speed ratio and change the plastic tube Cutting Length.