CN102233388A - Pipe expanding tool - Google Patents
Pipe expanding tool Download PDFInfo
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- CN102233388A CN102233388A CN2010105684663A CN201010568466A CN102233388A CN 102233388 A CN102233388 A CN 102233388A CN 2010105684663 A CN2010105684663 A CN 2010105684663A CN 201010568466 A CN201010568466 A CN 201010568466A CN 102233388 A CN102233388 A CN 102233388A
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Abstract
The invention provides a pipe expanding tool capable of performing rotation stopping and pipe expanding of a pipe expanded part via a tool. The pipe expanding tool (1) is provided with: a pipe expander frame (30) keeping a rolling piece (20) and inserted in a pipe (TU) (a pipe expanded part) in a mode of free rotation; a mandrel (40) inserted in the pipe expander frame (30) and provided with a conical part (41) with a small diameter at the front side; and a rotation stopping mechanism (50) of the pipe (TU), wherein, the rotation stopping mechanism (50) is provided with: a bushing part (51) for insertion of the pipe (TU); a pawl (52) configured in the bushing part (51) and going forward in linkage with the mandrel (40), the inner circumferential surface of the bushing part (51) is provided with a conical part (51b) with a small diameter at the front side, via making of the mandrel (40) move forward, the pawl (52) is pushed out toward the radial inner side from the conical part (51b) of the bushing part (51), furthermore, each rolling piece (20) is pushed out toward the radial outer side from the conical part (41) of the mandrel (40).
Description
Technical field
The present invention relates to be used for to carried out the expanding tool of hole enlargement internally by the expander parts.
Background technology
Usually, in the manufacturing process of heat exchangers such as boiler, condenser, radiator, as the expanding tool that is used for pipe (by the expander parts) is engaged in tube sheet, there is the expanding tool (for example with reference to patent documentation 1) that pipe is crimped on tube sheet by in the portion of the hole of tube sheet, internally pipe being carried out hole enlargement.
In this expanding tool, a plurality of rolling members are retained as on concentric circles and rotate freely, advance by making axle, and each rolling member is gone out by thruster outwardly.And then, roll while each rolling member pushes the inner peripheral surface of pipe, thereby pipe is by hole enlargement.
[patent documentation 1] TOHKEMY 2007-229766 communique
In above-mentioned expanding tool in the past, when each rolling member when the inner peripheral surface of pipe rolls, pipe might followed each rolling member and rotated together.Therefore, the operator of operation expanding tool and holding tube are in order to avoid the operator of pipe rotation need carry out operation, the problem that exists the expander operation to become numerous and diverse jointly.
Summary of the invention
Problem of the present invention is, addresses the above problem, and provides the enough instruments of a kind of energy to carry out by the expanding tool of the spline of expander parts and hole enlargement.
In order to solve above-mentioned problem, expanding tool of the present invention possesses: the tube expander framework of tubular, this tube expander framework remains on a plurality of rolling members on the concentric circles in rotation mode freely, and this tube expander framework is to be inserted in by in the expander parts in the rotation mode freely; Axle, this axle is inserted in the described tube expander framework freely and in the rotation mode freely with slip, and is formed with the little tapered portion of diameter of front side at outer peripheral face; And describedly be it is characterized in that by the rotation preventive mechanism of expander parts described rotation preventive mechanism possesses: the pipe box parts of tubular, described by expander parts interpolation in these pipe box parts; And pawl, this pawl is configured in the inner peripheral surface of described pipe box parts and described by between the outer peripheral face of expander parts, and advance in linkage with described axle, be formed with the little tapered portion of diameter of front side at the inner peripheral surface of described pipe box parts, described axle is advanced with respect to described pipe box parts and described tube expander framework, thus, described pawl is released towards the radially inner side of described pipe box parts by the tapered portion of described pipe box parts, described pawl contacts with described outer peripheral face by the expander parts, and described each rolling member is released towards the radial outside of described tube expander framework by the tapered portion of described axle.
In this structure, advance by making axle, pawl with contacted by the outer peripheral face of expander parts, thereby be fixed in the pipe box parts of fixed system by the expander parts, and each rolling member is pressed in by the inner peripheral surface of expander parts.Therefore, can utilize an instrument to carry out, need not to be equipped with to being kept in order to avoid therefore the operating personnel who is rotated by the expander parts can improve operation by the expander parts by the spline of expander parts and hole enlargement.
In described expanding tool, preferred described rotation preventive mechanism has: holding frame, this holding frame and described pawl butt; The stop part of tubular, this stop part remains rotation freely with the rear portion of described axle; First elastomeric element, this first elastomeric element are folded between described pipe box parts and the described holding frame; And second elastomeric element, this second elastomeric element is folded between described holding frame and the described stop part, and in this case, the elastic force of described second elastomeric element of the elasticity rate of described first elastomeric element is little.
In this structure, initial when axle and stop part are advanced, first elastic components contract, pawl advances with holding frame, is fixed by pawl by the expander parts.Then, second elastic components contract, axle is advanced further, and thus, each rolling member can be pressed on by the inner peripheral surface of expander parts.Like this, owing to carry out by the spline of expander parts earlier, therefore can prevent reliably by the rotation of expander parts.
In above-mentioned expanding tool, described first elastomeric element is folded between the rear portion of described pipe box parts and described holding frame, and described first elastomeric element disposes in the mode of the periphery of the front portion that surrounds described holding frame, in this case, the space in the instrument can be effectively utilized, instrument integral body can be formed compactly.
In expanding tool of the present invention, advance by making axle, be fixed in the pipe box parts of fixed system by the expander parts, and each rolling member is pressed in by the inner peripheral surface of expander parts, therefore, can utilize an instrument to carry out to be improved operation by the spline of expander parts and hole enlargement.
Description of drawings
Fig. 1 is the sectional view that the expanding tool of present embodiment is shown.
Fig. 2 is the figure that the expanding tool of present embodiment is shown, and (a) is the cutaway view along the A-A line of Fig. 1, (b) figure that describes for the feed angle (feed angle) to rolling member.
Fig. 3 be illustrated in present embodiment the rotation preventive mechanism median claw not with the figure of pipe state of contact, (a) be sectional view, (b) be axial cutaway view.
Fig. 4 is illustrated in the rotation preventive mechanism median claw of present embodiment and the figure of pipe state of contact, (a) is sectional view, (b) is axial cutaway view.
Label declaration
1: expanding tool; 20: rolling member; 21: the tapered portion of rolling member; 30: the tube expander framework; 40: axle; 41: the tapered portion of axle; 50: rotation preventive mechanism; 51: the pipe box parts; 51a: the inner peripheral surface of pipe box parts; 51b: the tapered portion of pipe box parts; 52: pawl; 52a: tooth portion; 52b: the tapered portion of pawl; 53: holding frame; 53a: minor diameter part; 53b: large-diameter portion; 53d: recess; 53e: jut; 54: stop part; 55: enclose behind the pipe box; 55d: locking nut; 56: the first elastomeric elements; 57: the second elastomeric elements; 60: cover; 70: spring shield; P: tube sheet; P1: hole portion; TU: pipe (by the expander parts); TU1: the inner peripheral surface of pipe; TU2: the outer peripheral face of pipe.
The specific embodiment
Suitably embodiments of the present invention are elaborated with reference to accompanying drawing.
The expanding tool 1 of present embodiment possesses: tube expander framework (expander frame) 30, and this tube expander framework 30 remains rotation freely with a plurality of rolling members 20; Axle 40, this axle 40 is inserted in the tube expander framework 30 freely and in the rotation mode freely with slip; And the rotation preventive mechanism 50 of pipe TU.
The inner peripheral surface TU1 that expanding tool 1 presses on each rolling member 20 pipe TU (" by the expander parts " in claims) on one side makes each rolling member 20 roll on one side, thus pipe TU is carried out hole enlargement internally.
In addition, in the present embodiment, the most advanced and sophisticated side (left side of Fig. 1) of establishing tube expander framework 30 describes for rear side for front side, the base end side (right side of Fig. 1) of establishing tube expander framework 30.
Tube expander framework 30 inserts in the parts cylindraceous of managing among the TU in being.Shown in Fig. 2 (a), be formed with three slot parts 31 that penetrate into inner peripheral surface from outer peripheral face in the front portion of tube expander framework 30.Each slot part 31 disposes with equal angles spacing (120 degree spacing) at the circumferencial direction of tube expander framework 30.In each slot part 31, taken in rolling member 20 described later.
And, be formed with the guide surface of taper at the leading section of tube expander framework 30, to be inserted in the peristome of pipe TU easily.
As shown in Figure 1, rolling member 20 is to be used for internally pipe TU being carried out roll extrusion and making the columned parts of managing the TU plastic deformation.At the outer peripheral face of rolling member 20, the little mode of rear side diameter is formed with tapered portion 21 so that the front side diameter of rolling member 20 is big.
Shown in Fig. 2 (a), rolling member 20 is incorporated in the slot part 31 of tube expander framework 30.Therefore, in the present embodiment, on the circumference of tube expander framework 30, on concentric circles, dispose three rolling members 20 with equal angles spacing (120 degree spacing).Rolling member 20 rotation that remains in the slot part 31 is haunted freely freely and from the outer peripheral face of tube expander framework 30.
In addition, the number of rolling member 20 and arrangement are not limited to above-mentioned embodiment, can suitably set according to conditions such as internal diameter of managing TU and intensity.
Shown in Fig. 2 (b), rolling member 20 has predetermined feed angle (feed angle) and is held in tube expander framework 30 (with reference to Fig. 1) with the mode of direction (radially) inclination of the rotating shaft direct cross of axle 40 described later with rotating shaft court.
As shown in Figure 1, axle 40 inserts in the columned parts in the tube expander framework 30 in being, this axle 40 with respect to tube expander framework 30 axially (fore-and-aft direction) slide freely and rotation mode freely in insert in the tube expander framework 30.
In the front portion of axle 40, so that the front side diameter of axle 40 is little and mode that the rear side diameter is big is formed with tapered portion 41.This tapered portion 41 forms the shape of coincideing with the shape of the tapered portion 21 of rolling member 20, and the tapered portion 21 that constitutes rolling member 20 contacts with the tapered portion 41 of axle 40.
And, being formed with box nut 42 at the leading section of axle 40, these box nut 42 performances prevent the function that axle 40 is deviate from towards the rear with respect to tube expander framework 30.
Be connected at the box nut 42 of axle 40 under the state (center roller 40 is not given the state towards the propulsive force in the place ahead) of the leading section of tube expander framework 30, rolling member 20 is incorporated in the tube expander framework 30.
And then shown in Fig. 2 (a), when making axle 40 be rotated in the forward (among Fig. 2 (a) to right rotation), the rotation of axle 40 is delivered to each rolling member 20, on one side each rolling member 20 rotations are on one side revolved round the sun.At this moment, because each rolling member 20 is set with feed angle with respect to the rotating shaft of axle 40, therefore, axle 40 is carried towards the place ahead by each rolling member 20 of rotation.
When axle 40 was advanced with respect to tube expander framework 30, rolling member 20 was released towards the radial outside of tube expander framework 30 by the tapered portion 41 of axle 40, and rolling member 20 is pressed in the inner peripheral surface TU1 of pipe TU.
In addition, when making axle 40 reverse rotations (among Fig. 2 (a) to anticlockwise), axle 40 is carried towards the rear by each rolling member 20.
Like this, the front portion of axle 40 is supported on tube expander framework 30 via each rolling member 20 in rotation mode freely.On the other hand, as shown in Figure 1, insert in the rear portion of axle 40 in the stop part 54 described later, and be retained as rotation freely.Further, the rearward end 43 of axle 40 is outstanding towards the rear from stop part 54, is the position that the efferent with drive unit (not shown) links.
As shown in Figure 1, rotation preventive mechanism 50 possesses: pipe box (collar) parts 51 insert in these pipe box parts 51 in the pipe TU; Pawl (jaw) 52, this pawl 52 is configured in the pipe box parts 51; Holding frame (clamp frame) 53, this holding frame 53 is used to keep pawl 52; And stop part 54, this stop part 54 remains rotation freely with the rear portion of axle 40.
Make pawl 52 contact and mesh, thereby 50 pairs of pipes of this rotation preventive mechanism TU fix and this pipe TU can not pivoted with outer peripheral face TU2 with the outer peripheral face TU2 of pipe TU.
And the internal diameter of pipe box parts 51 is set for: the inner peripheral surface 51a of pipe box parts 51 and in insert between the outer peripheral face TU2 of the pipe TU in the pipe box parts 51 and be formed with the gap.
And the front end face 51f of the anterior 51d of pipe box parts 51 is the position that is connected to the outer surface of tube sheet P (with reference to Fig. 3).In addition, the length of the area of front end face 51f and anterior 51d axial (fore-and-aft direction) is set from the outstanding overhang of tube sheet P according to arrangement pitches and the pipe TU of the P1 of hole portion of tube sheet P.
Between the outer peripheral face TU2 of the inner peripheral surface 51a at the rear portion of pipe box parts 51 and pipe TU, dispose a plurality of pawls 52.
In the present embodiment, shown in Fig. 3 (a), on the inner peripheral surface of pipe box parts 51, on concentric circles, dispose three pawls 52 with equal angles spacing (120 degree spacing).At the distance piece 52c that is folded with the interval between the pawl 52,52 that is used to keep adjacent between each pawl 52.
In addition, dispose three pawls 52 in the present embodiment, still, the number of pawl 52 and arrangement are not limited to above-mentioned embodiment, can suitably set according to conditions such as external diameter of managing TU and intensity.
Inner surface at pawl 52 is formed with the 52a of tooth portion that meshes with the outer peripheral face TU2 that manages TU.And, be formed with the little and big tapered portion 52b of thickness rear side of the thickness of front side at the outer surface of pawl 52.Shown in Fig. 3 (a), this tapered portion 52b forms the identical shape with the tapered portion 51b of pipe box parts 51, and the tapered portion 52b that constitutes pawl 52 contacts with the tapered portion 51b of pipe box parts 51.
Shown in Fig. 3 (a), when pawl 52 is positioned at the rearward end of pipe box parts 51, between the outer peripheral face TU2 of the 52a of tooth portion of pawl 52 and pipe TU, be formed with gap (with reference to Fig. 3 (b)).And then shown in Fig. 4 (a), when pawl 52 was advanced in pipe box parts 51, pawl 52 was released towards the radially inner side of pipe box parts 51 by the tapered portion 51b of pipe box parts 51, and the 52a of tooth portion of pawl 52 contacts with the outer peripheral face TU2 that manages TU and meshes (with reference to Fig. 4 (b)).
In addition, the area that contact of outer peripheral face TU2 of pawl 52 and pipe TU, be that the area (width and axial length) of the inner surface of pawl 52 is according to changes such as the length of pipe TU or thickness, in order to avoid to managing the TU effect excessive load is arranged when each pawl 52 holding tube TU.
As shown in Figure 1, holding frame 53 is the parts of tubular that are configured in the rear of pipe box parts 51, and tube expander framework 30 is to insert in this holding frame 53 in the rotation mode freely.Be formed with minor diameter part 53a in the front portion of holding frame 53, be formed with large-diameter portion 53b at the rear portion of holding frame 53.
And, being formed with jut 53e at the central portion of the front end face of holding frame 53 (minor diameter part 53a), this jut 53e is connected to the rear end face of pawl 52, and can insert in the pipe box parts 51.
Like this, contact with the leading section of holding frame 53 by making pawl 52, thus the moving towards the place ahead in linkage of pawl 52 and holding frame 53 towards moving of the place ahead.
Between the large-diameter portion 53b of rear end face 51c of pipe box parts 51 (with reference to Fig. 3 (a)) and holding frame 53, be folded with first elastomeric element 56.
First elastomeric element 56 is the helical springs of periphery that surround the minor diameter part 53a (front portion) of holding frame 53.This first elastomeric element 56 with respect to 53 pairs of pipe box parts 51 of holding frame towards the place ahead application of force.
Be provided with the cover 60 of tubular in the periphery of holding frame 53.Be embedded in the rear portion 51e of pipe box parts 51 outside the front portion of cover 60, and be anchored on the outer peripheral face of pipe box parts 51.
Be embedded in the large-diameter portion 53b of holding frame 53 outside the rear portion of cover 60.Holding frame 53 slides freely at fore-and-aft direction with respect to cover 60.
Open rearward end portion at cover 60 is formed with towards the protuberance 61 of the outstanding ring-type of radially inner side.And, at the outstanding flange 53c that is provided with of the outer peripheral face of the large-diameter portion 53b of holding frame 53.And then flange 53c is connected to the front surface of protuberance 61, thus, and being limited of holding frame 53 towards the mobile of rear.
In addition, when holding frame 53 was positioned at rear, the pawl 52 that is installed on holding frame 53 was configured in the rearward end of pipe box parts 51.
The anterior outer rear portion that is embedded in cover 60 of spring shield 70 cylindraceous.Spring shield 70 also extends towards the rear than tube expander framework 30, and open rearward end portion is positioned at the axial roughly pars intermedia of second elastomeric element 57 described later.
Above-mentioned pipe box parts 51, cover 60, holding frame 53 and spring shield 70 are not follow the rotation of axle 40 and the parts of the fixed system that rotates.
Central part at the rear end face of holding frame 53 is formed with recess 53d.The anterior 55a of circle 55 is to insert among this recess 53d in the rotation mode freely behind the pipe box.
Circle 55 is to be installed in the parts of the tubular in the recess 53d via ball retainer 55c in freely mode of rotation behind the pipe box, inserts in the rear portion of tube expander framework 30 behind this pipe box in the circle 55.
Circle 55 rear portion 55b is screwed together in the thread groove that the outer peripheral face at the rear portion of tube expander framework 30 forms behind the pipe box, and circle 55 rotates in linkage with the rotation of tube expander framework 30 behind this pipe box.
And, the rear of circle 55 behind pipe box, locking nut 55d is screwed together in the thread groove at the rear portion of tube expander framework 30.
And then, by making circle 55 rotations behind the pipe box, can with circle 55 behind the pipe box with respect to tube expander framework 30 towards the place ahead or the rear carry.
Like this, move with respect to tube expander framework 30 by making behind the pipe box circle 55, with pipe box parts 51 towards the place ahead or the rear carry, thereby can regulate from pipe box parts 51 outstanding overhangs (rolling member effective length) rolling member 20.
Stop part 54 is parts cylindraceous, inserts in the rear portion of axle 40 in this stop part 54, and is formed with the flange 54a of enlarged-diameter at the rear portion of this stop part 54.This stop part 54 remains rotation freely via being located at the rear portion of inner bearing with axle 40, and with the moving at fore-and-aft direction in linkage of axle 40 towards moving of fore-and-aft direction.
Between the flange 54a of the rear end face of holding frame 53 and stop part 54, be folded with second elastomeric element 57.Second elastomeric element 57 is the helical springs that are enclosed in the periphery of the axle of exposing between tube expander framework 30 and the stop part 54 40.
The elastic force (spring constant) of setting first elastomeric element 56 in the present embodiment for is littler than the elastic force (spring constant) of second elastomeric element 57, when the propulsive force of stop part 54 being given towards the place ahead, the amount of contraction of first elastomeric element 56 is bigger than the amount of contraction of second elastomeric element 57.
Secondly, the hole enlargement operation of using the pipe TU that above-mentioned expanding tool 1 carries out is described.
At first, make the locking nut 55d rotation of expanding tool shown in Figure 11, with circle 55 behind the pipe box with respect to tube expander framework 30 towards the place ahead or the rear carry, thus, rolling member 20 is regulated from pipe box parts 51 outstanding overhangs (rolling member effective length) according to the length at the position of hole enlargement.And the rearward end 43 of axle 40 links with the output shaft of electric tool (not shown).
Shown in Fig. 3 (a), insert the front portion of tube expander framework 30 among the pipe TU in being inserted in the P1 of hole portion of tube sheet P, and make the front end face 51f of pipe box parts 51 be connected to the outer surface of tube sheet P, should.Thus, rolling member 20 is configured in the P1 of hole portion.
If under this state, drive electric tool, and electric tool is moved towards the place ahead while axle shown in Figure 1 40 is rotated in the forward, center roller 40 and stop part 54 are given the propulsive force towards the place ahead thus, and then propulsive force is delivered to holding frame 53 via second elastomeric element 57.
At this moment, because the elastic force (spring constant) of first elastomeric element 56 is littler than the elastic force (spring constant) of second elastomeric element 57, therefore, the contraction of shrinkage ratio second elastomeric element 57 of first elastomeric element 56 is big, and holding frame 53 and pawl 52 advance.
Shown in Fig. 4 (a), when pawl 52 advances in pipe box parts 51, pawl 52 is released towards the radially inner side of pipe box parts 51 by the tapered portion 51b of pipe box parts 51, and the 52a of tooth portion of pawl 52 contacts with the outer peripheral face TU2 of pipe TU and meshes (with reference to Fig. 4 (b)) with this outer peripheral face TU2.Thus, pipe TU is fixed in fixed system (pipe box parts 51) via pawl 52, can prevent to manage the rotation of TU.
The front end face of the minor diameter part 53a of holding frame 53 is connected to the rear end face of pipe box parts 51, and thus, advancing of holding frame 53 is limited, and the contraction of first elastomeric element 56 finishes.Then, second elastomeric element 57 shown in Figure 1 shrinks, and axle 40 and stop part 54 are advanced further thus.
And then shown in Fig. 2 (a), rolling member 20 is released towards the radial outside of tube expander framework 30 by the tapered portion 41 of axle 40, and each rolling member 20 is pressed in the inner peripheral surface TU1 of pipe TU.At this moment, because the rotation of axle 40 is passed to each rolling member 20, therefore, on one side each rolling member 20 rotations are on one side revolved round the sun.Thus, tube expander framework 30 pivots.
Like this, on one side each rolling member 20 rolls by the inner peripheral surface TU1 of pressure pipe TU on one side, thus, pipe TU is by hole enlargement internally, and pipe TU is crimped on the P1 of hole portion of tube sheet P (with reference to Fig. 4 (a)).
And when making axle 40 from pipe TU disengaging after the operation, while make axle 40 reverse rotations that electric tool is moved towards the rear, holding frame 53 is pushed back towards the rear by the elastic force of first elastomeric element 56.Thus, pawl 52 can retreat in pipe box parts 51, and shown in Fig. 3 (a), pawl 52 moves towards the radial outside of pipe box parts 51, and the 52a of tooth portion leaves from the outer peripheral face of pipe TU.
In aforesaid expanding tool 1, shown in Fig. 4 (a), advance by making axle 40, pawl 52 contacts with the outer peripheral face TU2 of pipe TU, and pipe TU is fixed in the pipe box parts 51 of fixed system, and each rolling member 20 is pressed in the inner peripheral surface TU1 of pipe TU.Therefore, can utilize an instrument to manage spline and the hole enlargement of TU, need not to be equipped with and pipe TU kept in order to avoid manage the operating personnel of TU rotation, so can improve operation.
And when axle 40 was advanced, initial first elastomeric element 56 shrank, and holding frame 53 advances, and pipe TU is fixing by pawl 52.Then, second elastomeric element 57 shown in Figure 1 shrinks, and axle 40 is advanced further, and thus, each rolling member 20 can be pressed on the inner peripheral surface TU1 of pipe TU.Like this, because therefore the spline of advanced line pipe TU can prevent to manage the rotation of TU reliably.
And, dispose first elastomeric element 56 by mode, thereby can effectively utilize the space in the instrument with the periphery of the minor diameter part 53a (front portion) that surrounds holding frame 53, can form instrument integral body compactly.
More than embodiments of the present invention are illustrated, still, the present invention is not limited to above-mentioned embodiment, can suitably change in the scope that does not break away from purport of the present invention.
For example, in the present embodiment, shown in Fig. 4 (a), pawl 52 contact with the outer peripheral face TU2 of pipe TU and with its engagement, stationary pipes TU thus still, also can fix by the outer peripheral face TU2 that pawl 52 is crimped on pipe TU and manage TU.
And, utilize helical spring to constitute first elastomeric element 56 and second elastomeric element 57, still, also can use various elastomeric elements such as elastomeric material.
Claims (3)
1. expanding tool, described expanding tool possesses:
The tube expander framework of tubular, this tube expander framework remains on a plurality of rolling members on the concentric circles in rotation mode freely, and this tube expander framework is to be inserted in by in the expander parts in the rotation mode freely;
Axle, this axle is inserted in the described tube expander framework freely and in the rotation mode freely with slip, and is formed with the little tapered portion of diameter of front side at outer peripheral face; And
It is described by the rotation preventive mechanism of expander parts,
Described expanding tool is characterised in that,
Described rotation preventive mechanism possesses:
The pipe box parts of tubular, described by expander parts interpolation in these pipe box parts; And
Pawl, this pawl are configured in the inner peripheral surface of described pipe box parts and described by between the outer peripheral face of expander parts, and advance in linkage with described axle,
Be formed with the little tapered portion of diameter of front side at the inner peripheral surface of described pipe box parts,
Described axle is advanced with respect to described pipe box parts and described tube expander framework,
Thus, described pawl is released towards the radially inner side of described pipe box parts by the tapered portion of described pipe box parts, and described pawl contacts with described outer peripheral face by the expander parts, and,
Described each rolling member is released towards the radial outside of described tube expander framework by the tapered portion of described axle.
2. expanding tool according to claim 1 is characterized in that,
Described rotation preventive mechanism has:
Holding frame, this holding frame and described pawl butt;
The stop part of tubular, this stop part remains rotation freely with the rear portion of described axle;
First elastomeric element, this first elastomeric element are folded between described pipe box parts and the described holding frame; And
Second elastomeric element, this second elastomeric element are folded between described holding frame and the described stop part,
The elastic force of described second elastomeric element of the elasticity rate of described first elastomeric element is little.
3. expanding tool according to claim 1 and 2 is characterized in that,
Described first elastomeric element is folded between the rear portion of described pipe box parts and described holding frame, and surrounds the periphery of the front portion of described holding frame.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010107257A JP5113878B2 (en) | 2010-05-07 | 2010-05-07 | Tube expansion tool |
| JP2010-107257 | 2010-05-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102233388A true CN102233388A (en) | 2011-11-09 |
| CN102233388B CN102233388B (en) | 2013-09-25 |
Family
ID=44884787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010568466 Expired - Fee Related CN102233388B (en) | 2010-05-07 | 2010-12-01 | Pipe expanding tool |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5113878B2 (en) |
| KR (1) | KR101235827B1 (en) |
| CN (1) | CN102233388B (en) |
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| KR101423081B1 (en) | 2013-07-08 | 2014-07-24 | 주식회사 하이스텐 | pipe expanding zig |
| TWI572423B (en) * | 2014-05-08 | 2017-03-01 | Zhen-Ci Lin | The structure of the pipe expander |
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| CN100460103C (en) * | 2006-03-01 | 2009-02-11 | 速技能机械有限公司 | Tube expanding device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3854314A (en) * | 1973-07-25 | 1974-12-17 | Dresser Ind | Step controlled tube expander |
| JPS5046745U (en) | 1973-08-27 | 1975-05-09 |
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2010
- 2010-05-07 JP JP2010107257A patent/JP5113878B2/en not_active Expired - Fee Related
- 2010-10-29 KR KR1020100107004A patent/KR101235827B1/en not_active IP Right Cessation
- 2010-12-01 CN CN 201010568466 patent/CN102233388B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS50146745U (en) * | 1974-05-21 | 1975-12-05 | ||
| CN2353464Y (en) * | 1998-12-02 | 1999-12-15 | 叶岳瑞 | Ball-type tube expander for metal racket frame |
| JP2000218414A (en) * | 1999-02-02 | 2000-08-08 | Shisutekku Kk | Collet chuck joint device |
| CN1267575A (en) * | 1999-03-18 | 2000-09-27 | 武湘川 | Tube expanding machine and process |
| US20050005668A1 (en) * | 2002-07-11 | 2005-01-13 | Duggan Andrew Michael | Tubing expansion |
| CN1923400A (en) * | 2005-09-02 | 2007-03-07 | 速技能机械有限公司 | Tube-expanding tool |
| CN100460103C (en) * | 2006-03-01 | 2009-02-11 | 速技能机械有限公司 | Tube expanding device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110099733A (en) * | 2016-12-23 | 2019-08-06 | 吉多瑞工具制造有限责任及两合公司 | For the Method and kit for from pipeline disassembly filter element |
| CN108941342A (en) * | 2018-08-28 | 2018-12-07 | 航珍航空技术（上海）有限公司 | A kind of inward turning single lead screw ex truding briquetting machine |
| CN111618190A (en) * | 2019-02-27 | 2020-09-04 | 杉野机械股份有限公司 | Automatic pipe expanding equipment, automatic pipe expanding method and pipe expander replacing method |
| CN111618190B (en) * | 2019-02-27 | 2022-04-19 | 杉野机械股份有限公司 | Automatic pipe expanding equipment, automatic pipe expanding method and pipe expander replacing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011235298A (en) | 2011-11-24 |
| KR20110123647A (en) | 2011-11-15 |
| CN102233388B (en) | 2013-09-25 |
| JP5113878B2 (en) | 2013-01-09 |
| KR101235827B1 (en) | 2013-02-21 |
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