CN201769230U

CN201769230U - Rotary cutting tool

Info

Publication number: CN201769230U
Application number: CN2010202719134U
Authority: CN
Inventors: 王晓东
Original assignee: SHANGHAI MEIHUA MEDICAL EQUIPMENT CO Ltd
Current assignee: Amsino Medical Equipment (Kunshan) Co., Ltd.
Priority date: 2010-07-27
Filing date: 2010-07-27
Publication date: 2011-03-23
Anticipated expiration: 2020-07-27

Abstract

The utility model discloses a rotary cutting tool comprising a rotary tool rest, a hilt, a blade, and a hilt resetting mechanism, wherein the rotary tool rest is provided with a hilt groove and an axial through hole used for holding a tubular product to be cut; the hilt is arranged in the hilt groove and pivotally connected with the rotary tool rest, and can rotate from an initial position to a cutting position when the rotary tool rest rotates; the blade is arranged on the hilt and when the hilt is at the initial position, a gap exists between the blade and the tubular product to be cut, and when the hilt is at the cutting position, the blade cuts through the wall of the tubular product to be cut; and the hilt resetting mechanism is used for resetting the hilt to the initial position. The rotary cutting tool can enable the hilt to rotate outwards by virtue of centrifugal force generated when the rotary tool rest rotates, and when the hilt rotates outwards, the blade installed on the hilt rotates inwards to cut through the wall of the tubular product. The rotary cutting tool can ensure cutting uniformity and the flatness of a cutting section when cutting tubular products made of elastic material.

Description

Rotary cutter

Technical field

The utility model relates to a kind of cutting tool, relates in particular to a kind of cutting tool that is used for cutting elastic material tubing.

Background technology

Macromolecule, rubber elastomeric material have been widely used in a plurality of fields, such as fields such as building, electronics, medical treatment and traffic.The cutting of elastomeric material tubing relatively is easy to generate following problem: the pressure that cutter is produced when cutting can make elastomeric material distortion, the out-of-flatness of tubing cutting section burr etc. often occur.

At present, usually adopt the mode of rotation cutting that elastomeric material tubing is cut, but traditional rotation cutting mode automaticity is low, and cutting angle and time are manually judged in main dependence, is difficult to guarantee the uniformity of elastomeric material tubing cutting and the flatness of cutting section like this.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of rotary cutter that can be rotated cutting to elastomeric material tubing, utilizes this rotary cutter can guarantee that the cutting section of the uniformity of cutting and tubing is smooth smooth.

The technical scheme that the utility model adopted is: a kind of rotary cutter comprises:

Swivelling tool-holder, this swivelling tool-holder are provided with the handle of a knife groove and are used for the axially extending bore of ccontaining tubing to be cut;

Handle of a knife is arranged in the handle of a knife groove, and this handle of a knife and swivelling tool-holder articulate, and can turn to a cutting position by an initial position when swivelling tool-holder rotates;

Blade is arranged on the handle of a knife, when handle of a knife is in initial position, has a gap between this blade and the tubing to be cut; When handle of a knife was in cutting position, this blade was cut the tube wall of wearing this tubing to be cut;

The handle of a knife resetting-mechanism is used for handle of a knife is reset to initial position.

When swivelling tool-holder of the present utility model at the uniform velocity rotated under external force drives at high speed, handle of a knife outwards rotated under action of centrifugal force, drives blade simultaneously and inwardly rotates, and the cutting angle of blade and extension elongation are adjusted to the cutting position an of the best.The centrifugal force that the swivelling tool-holder rotation is produced becomes the power of blade cuts, is enough to overcome resistance and the frictional force that blade is run in the incising pipes process, and the cutting angle and the extension elongation of blade remained on above-mentioned optimum Cutting position always.Very high and when keeping even, the centrifugal force of generation is uniformly when the rotating speed of swivelling tool-holder, thus the uniformity of cutting can be guaranteed, and guarantee that the cutting section of tubing is smooth smooth.

Description of drawings

Fig. 1 is the perspective view of rotary cutter of the present utility model;

Fig. 2 is that the master of rotary cutter of the present utility model looks schematic diagram;

Fig. 3 A shows the A-A cutaway view of Fig. 2, and wherein, handle of a knife is in initial position;

Fig. 3 B is the local enlarged diagram of the P part of Fig. 3 A;

Fig. 4 A shows the A-A cutaway view of Fig. 2, and wherein, handle of a knife is in cutting position;

Fig. 4 B is the local enlarged diagram of the R part of Fig. 4 A.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is made and to be further specified.

Referring to figs. 1 to Fig. 4 B, rotary cutter of the present utility model comprises swivelling tool-holder 1, handle of a knife 2, blade 3 and handle of a knife resetting-mechanism.

Swivelling tool-holder 1 is provided with the axially extending bore 11 that is used for ccontaining tubing to be cut 4, and this axially extending bore 11 has a feed end 11a and a discharge end 11b.Axially extending bore 11 preferably is arranged on the center of swivelling tool-holder 1.Swivelling tool-holder 1 is provided with the handle of a knife groove 12 that extends along circumferentially.This swivelling tool-holder 1 can be around rotating shaft rotation under the driving of a power source, and this rotating shaft for example can be the central axis of this axially extending bore, adopts motor as power source usually.Handle of a knife 2 is arranged in the handle of a knife groove 12, and a side of handle of a knife 2 and swivelling tool-holder 1 articulate mutually by a pin 5 that is arranged in simultaneously on swivelling tool-holder 1 and the handle of a knife 2.Handle of a knife 2 has an initial position and a cutting position, and can turn to cutting position by initial position when swivelling tool-holder 1 rotation.Blade 3 is arranged on the handle of a knife 2.The handle of a knife resetting-mechanism comprises at least one back-moving spring, and an end of this back-moving spring links to each other with swivelling tool-holder 1, and the other end links to each other with handle of a knife 2.This handle of a knife resetting-mechanism is used for handle of a knife 2 is reset to initial position.

In the embodiment shown in Fig. 1 to Fig. 4 B, swivelling tool-holder 1 comprises a body 1a and a feeder 1b, and handle of a knife 2 is arranged on this body 1a, and feeder 1b is positioned at the side of body 1a, and links to each other with body 1a.The external diameter of feeder 1b is less than the external diameter of body 1a.On the outer wall of body 1a, be provided with an endless-belt groove 13 that is used to place feed belt, on the outer wall of feeder 1b, be provided with a groove 14 that is connected with the axially extending bore 11 of swivelling tool-holder 1.When cutting operation, a pressure head can extend in the groove 14, and is pressed on the tubing to be cut 4, thereby keeps the glacing flatness of tubing 4.The cross section of handle of a knife 2 is that ring type is fan-shaped, is provided with an arc groove 121 on the bottom surface 120 of handle of a knife groove 12, this arc groove 121 when handle of a knife 2 is in initial position and the inner arc surface 21 of handle of a knife 2 common form one can ccontaining tubing 4 to be cut through hole.Blade 3 is installed on the handle of a knife 2 by four pins 32.The handle of a knife resetting-mechanism comprises a back-moving spring 61, the bottom surface 120 of handle of a knife groove 12 is provided with a spring groove 122, one end 2a of handle of a knife 2 is provided with a spring groove 22, one end of back-moving spring 61 is arranged in the spring groove 122 of handle of a knife groove bottom, and link to each other with swivelling tool-holder 1, the other end is arranged in the spring groove 22 of handle of a knife one end 2a, and links to each other with handle of a knife 2.

Shown in Fig. 3 A, Fig. 3 B, when handle of a knife 2 is in initial position, has a gap between this blade 3 and the tubing 4 to be cut, thereby can not influence the tubing charging.Leave a gap between the one end 2a of handle of a knife 2 close pins 5 and the bottom surface of handle of a knife groove 12, so that handle of a knife 2 can outwards rotate around pin 5, handle of a knife 2 is close to the bottom surface 120 of handle of a knife groove 12 away from the other end 2b of pin 5.

When carrying out cutting operation, the tubing 4 that is pushed into from the entrance point 11a of cutter can touch a limit switch after port of export 11b stretches out, control device starter motor immediately after receiving the enabling signal that this limit switch sends, motor is by dynamic conveyor belt driven rotary knife rest 1 at the uniform velocity running at a high speed.Because action of centrifugal force, handle of a knife 2 can overcome the screen resilience that the handle of a knife resetting-mechanism provides, and be that pivot outwards rotates with pin 5, arrives to the bottom surface 120 of handle of a knife groove 12 up to an end 2a of handle of a knife 2, and handle of a knife 2 is in cutting position at this moment.In handle of a knife 3 outside rotating process, blade 3 inwardly rotates, and the blade 31 of blade 3 is cut the tube wall of wearing this tubing to be cut along the direction of the central axis of through hole 11 perpendicular to axial direction, shown in Fig. 4 A, Fig. 4 B.

After finishing cutting operation, motor quits work, and swivelling tool-holder 1 slowly stops operating, and centrifugal force disappears, handle of a knife 2 and blade 3 fall back to initial position under the screen resilience effect of handle of a knife resetting means, the other end 2b of handle of a knife 2 is resisted against on the bottom surface 120 of handle of a knife groove 12.

Adopt the technical solution of the utility model, can realize uniform and stable ground cutting elastic material tubing, and guarantee the smooth smooth of tubing cutting section.

Though the utility model is described with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, do not breaking away from variation or the replacement that also can make various equivalences under the situation of the present utility model, therefore, as long as in connotation scope of the present utility model in the scope to the variation of the foregoing description, claims that modification all will drop on the application.

Claims

1. a rotary cutter is characterized in that, comprising:

Swivelling tool-holder, described swivelling tool-holder are provided with the handle of a knife groove and are used for the axially extending bore of ccontaining tubing to be cut;

Handle of a knife is arranged in the described handle of a knife groove, and this handle of a knife and described swivelling tool-holder articulate, and can turn to a cutting position by an initial position when swivelling tool-holder rotates;

Blade is arranged on the described handle of a knife, when described handle of a knife is in initial position, has a gap between this blade and the tubing to be cut; When described handle of a knife was in cutting position, this blade was cut the tube wall of wearing this tubing to be cut;

The handle of a knife resetting-mechanism is used for described handle of a knife is reset to initial position.

2. rotary cutter as claimed in claim 1 is characterized in that, described handle of a knife resetting-mechanism comprises at least one back-moving spring, and an end of this back-moving spring links to each other with described swivelling tool-holder, and the other end links to each other with described handle of a knife.

3. rotary cutter as claimed in claim 1 is characterized in that, the cross section of described handle of a knife is that ring type is fan-shaped, is provided with an arc groove on the bottom surface of described handle of a knife groove; This arc groove is when described handle of a knife is in initial position and the common through hole that forms a ccontaining tubing to be cut of the inner arc surface of described handle of a knife.

4. rotary cutter as claimed in claim 1 is characterized in that, a side of described handle of a knife articulates mutually by a pin that is arranged in simultaneously on described swivelling tool-holder and the described handle of a knife.

5. rotary cutter as claimed in claim 1 is characterized in that described axially extending bore is arranged on the center of described swivelling tool-holder.

6. rotary cutter as claimed in claim 1 is characterized in that, described swivelling tool-holder comprises a body and a feeder, and described handle of a knife is arranged on this body, and feeder is positioned at a side of body, and links to each other with body; The external diameter of feeder is less than the external diameter of body.

7. rotary cutter as claimed in claim 6 is characterized in that, the outer wall of described body is provided with an endless-belt groove that is used to place feed belt.

8. rotary cutter as claimed in claim 7 is characterized in that, the outer wall of described feeder is provided with a groove that is connected with the axially extending bore of swivelling tool-holder.